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Farooq A, Rhee GH, Shim H, Valizadeh B, Lee J, Khan M, Jeon BH, Jang SH, Choi YJ, Park YK. Enhanced mono-aromatics production by the CH 4-assisted pyrolysis of microalgae using Zn-based HZSM-5 catalysts. Chemosphere 2024; 351:141251. [PMID: 38253084 DOI: 10.1016/j.chemosphere.2024.141251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 12/19/2023] [Accepted: 01/16/2024] [Indexed: 01/24/2024]
Abstract
This study presents the catalytic pyrolysis of microalgae, Chlorella vulgaris (C. vulgaris), using pure CH4 and H2-rich gas evolved from CH4 decomposition on three different HZSM-5 catalysts loaded with Zn, Ga, and Pt, aimed specifically at producing high-value mono-aromatics such as benzene, toluene, ethylbenzene, and xylene (BTEX). In comparison with that for the typical inert N2 environment, a pure CH4 environment increased the bio-oil yield from 32.4 wt% to 37.4 wt% probably due to hydrogen and methyl radical insertion in the bio-oil components. Furthermore, the addition of bimetals further increased bio-oil yield. For example, ZnPtHZ led to a bio-oil yield of 47.7 wt% in pure CH4. ZnGaHZ resulted in the maximum BTEX yield (6.68 wt%), which could be explained by CH4 activation, co-aromatization, and hydrodeoxygenation. The BTEX yield could be further increased to 7.62 wt% when pyrolysis was conducted in H2-rich gas evolved from CH4 decomposition over ZnGaHZ, as rates of aromatization and hydrodeoxygenation were relatively high under this condition. This study experimentally validated that the combination of ZnGaHZ and CH4 decomposition synergistically increases BTEX production using C. vulgaris.
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Affiliation(s)
- Abid Farooq
- School of Environmental Engineering, University of Seoul, Seoul, 02504, Republic of Korea
| | - Gwang Hoon Rhee
- Department of Mechanical and Information Engineering, University of Seoul, Seoul, 02504, Republic of Korea
| | - Haneul Shim
- School of Environmental Engineering, University of Seoul, Seoul, 02504, Republic of Korea
| | - Behzad Valizadeh
- School of Environmental Engineering, University of Seoul, Seoul, 02504, Republic of Korea
| | - Jechan Lee
- Department of Global Smart City & School of Civil, Architectural Engineering, and Landscape Architecture, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - MoonisAli Khan
- Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Seong-Ho Jang
- Department of Bio-Environmental Energy, Pusan National University, Miryang, 50463, Republic of Korea.
| | - Yong Jun Choi
- School of Environmental Engineering, University of Seoul, Seoul, 02504, Republic of Korea.
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, Seoul, 02504, Republic of Korea.
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Ross D, Venkatesulu B, Yoo R, Block AM, Welsh JS, Baldea K, Farooq A, Gupta G, Showalter TN, Garant A, Harkenrider MM, Solanki AA. The Importance of Multi-Parametric MRI, PET/CT, and Biopsy for Identifying and Delineating the Extent of Locally Radiorecurrent Prostate Cancer: A Multi-institutional Analysis of the F-SHARP Clinical Trial. Int J Radiat Oncol Biol Phys 2023; 117:e432. [PMID: 37785409 DOI: 10.1016/j.ijrobp.2023.06.1598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Up to 50% of clinical recurrences after curative-intent radiation are intraprostatic local radiorecurrences (LRR), with improved detection through the recent incorporation of multi-parametric MRI and PET/CT in workup. Salvage local therapy (SLT) is increasingly being offered, particularly focal SLT to try to reduce toxicity due to prior radiation. Limited data exist on the incremental value of each imaging modality and biopsy in defining LRR. The objective of this study is to compare the findings of MRI, PET/CT and biopsy in patients with LRR prostate cancer, and the impact each modality has on identifying recurrence and defining the extent of prostate involvement. MATERIALS/METHODS This is a secondary analysis of 58 patients enrolled on the ongoing F-SHARP phase I/II clinical trial of salvage HDR brachytherapy from 3 institutions who underwent PSMA or fluciclovine PET/CT, MRI, and biopsy prior to enrollment. Recurrent tumor was delineated on each imaging modality and by inclusion of involved regions on biopsy. Descriptive statistics were used to compare the imaging-defined tumor with biopsy findings to assess the congruence between the imaging modalities and generate the percentage of patients with disease involvement on biopsy outside of the image-defined targets. RESULTS Initial therapy was conventional/moderately hypofractionated photons in 35 patients, LDR in 13, proton therapy in 7, SBRT in 2, and neutrons in 1. Recurrence Gleason grade groups included 1 (n = 3), 2 (17), 3 (12), 4 (8), 5 (9), and uninterpretable (9). MRI/TRUS sextant + fusion biopsy was performed in 40 patients, TRUS saturation biopsy in 4, and TRUS systematic biopsy in 14. The median number of cores involved and obtained were 6 and 14. The median number of discrete lesions on biopsy in different quadrants of the prostate was 3 (1-6). The median number of discrete lesions seen on MRI was 1 (0-4). MRI did not identity a discrete lesion in 4 patients. The sensitivity of MRI for detection of the LRR was 92.8%. The false negative rate for not detecting the focus of LRR on MRI was 7.2%. 68.4% of patients had biopsy-proven cancer outside of the MRI-defined target. Fluciclovine PET/CT was used in 45 patients, and 13 had PSMA PET/CT. The median number of lesions on PET/CT was 1 (0-2). PET/CT did not identify a discrete lesion in 8 patients. The pooled sensitivity of PET/CT in detecting the focus of LRR was 86.2% (Fluciclovine: 82.2%, PSMA: 100%). PET/CT false negative rate of PET/CT for not detecting the focus of LRR was 13.8% (Fluciclovine: 17.8%, PSMA 0%). 72.41% of patients had biopsy-proven cancer outside of the PET/CT-defined target (Fluciclovine: 77.8%, PSMA: 53.8%). CONCLUSION Although mpMRI and PET/CT are valuable tools for identifying LRR and delineating the extent of prostate/SV involvement, a thorough biopsy is mandatory if pursuing focal SLT. Such treatment should optimally be performed on a clinical trial with robust integration of all imaging and histopathologic data.
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Affiliation(s)
- D Ross
- Department of Radiation Oncology, Stritch School of Medicine, Cardinal Bernardin Cancer Center, Loyola University Chicago, Maywood, IL
| | - B Venkatesulu
- Department of Radiation Oncology, Stritch School of Medicine, Cardinal Bernardin Cancer Center, Loyola University Chicago, Maywood, IL; Loyola University Medical Center, Maywood, IL
| | - R Yoo
- Department of Radiation Oncology, Stritch School of Medicine, Cardinal Bernardin Cancer Center, Loyola University Chicago, Maywood, IL
| | - A M Block
- Department of Radiation Oncology, Stritch School of Medicine, Cardinal Bernardin Cancer Center, Loyola University Chicago, Maywood, IL; Loyola University Medical Center, Maywood, IL
| | - J S Welsh
- Department of Radiation Oncology, Stritch School of Medicine, Cardinal Bernardin Cancer Center, Loyola University Chicago, Maywood, IL; Loyola University Medical Center, Maywood, IL
| | - K Baldea
- Loyola University Medical Center, Maywood, IL; Department of Urology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL
| | - A Farooq
- Loyola University Medical Center, Maywood, IL; Department of Urology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL
| | - G Gupta
- Loyola University Medical Center, Maywood, IL; Department of Urology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL
| | | | - A Garant
- University of Texas Southwestern Department of Radiation Oncology, Dallas, TX
| | - M M Harkenrider
- Department of Radiation Oncology, Stritch School of Medicine, Cardinal Bernardin Cancer Center, Loyola University Chicago, Maywood, IL; Loyola University Medical Center, Maywood, IL
| | - A A Solanki
- Department of Radiation Oncology, Stritch School of Medicine, Cardinal Bernardin Cancer Center, Loyola University Chicago, Maywood, IL; Loyola University Medical Center, Maywood, IL
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Ghazanfar NA, Rasheed A, Shah AA, Bhatti SA, Sohail H, Farooq A. Impact of Duration of Catheterization on the Success Rate of Trial Without Catheter in Acute Urinary Retention Due to Benign Prostatic Enlargement. Cureus 2023; 15:e42716. [PMID: 37654938 PMCID: PMC10466170 DOI: 10.7759/cureus.42716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/30/2023] [Indexed: 09/02/2023] Open
Abstract
BACKGROUND The most common cause of acute urinary retention in men over 50 is benign prostate enlargement (BPE). Following the urethral catheterization, a trial without a catheter (TWOC) under the cover of alpha-blockers is given. The timing of TWOC varies from Day 3 to Day 7 of the retention episode. There is a need to study the improvement in the success rate of TWOC with the increasing number of days of catheterization. OBJECTIVE To measure the success rate of TWOC in acute urinary retention due to benign prostatic enlargement with increasing days of catheterization. METHOD The study was conducted in Social Security Teaching Hospital Lahore. Patients who presented with acute urinary retention due to benign prostatic enlargement were catheterized and given alpha-blockers. The patients were divided into two groups, one group having TWOC after three days and the other having TWOC after seven days. The success rate of TWOC was calculated and compared in the two groups. All patients included in the study had the first episode of acute retention with a moderately enlarged prostate and no element of second pathology or neurological deficit. RESULTS A total of 48 patients were included in the study, divided into two groups of 24 patients each. In the first group who underwent TWOC after seven days of catheterization, 15 out of 24 patients had successful TWOC with a success rate of 62.5%. In the second group of 24 patients, who had TWOC after three days of catheterization, only 11 patients had successful TWOC with a success rate of 45.8%. CONCLUSION There was a marked improvement in the success rate of TWOC with increasing days of catheterization after an acute retention episode, secondary to BPE.
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Affiliation(s)
- Noman Ali Ghazanfar
- Urology, University College of Medicine and Dentistry/Social Security Teaching Hospital, Lahore, PAK
| | - Abdur Rasheed
- Urology, Central Park Medical College and Teaching Hospital, Lahore, PAK
| | | | | | - Hassan Sohail
- Urology, University College of Medicine and Dentistry/Social Security Teaching Hospital, Lahore, PAK
| | - Abid Farooq
- Urology, Blackpool Victoria NHS (National Health Services) Trust Hospital, Blackpool, GBR
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Farooq A, Ko CH, Park YK. Sewage sludge steam gasification over bimetallic mesoporous Al-MCM48 catalysts for efficient hydrogen generation. Environ Res 2023; 224:115553. [PMID: 36822530 DOI: 10.1016/j.envres.2023.115553] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/13/2023] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Abstract
This study explored the potential of steam gasification of sewage sludge over different temperatures (non-catalytic) and bimetallic (Ni-Fe and Ni-Co) mesoporous Al-MCM48 (3-5% Al basis). The higher temperature (800 °C) resulted in higher gas yield (36.74 wt%) and syngas (H2 and CO) selectivity (35.30 vol% and 11.66 vol%). Moreover, catalytic approach displayed that the Al-MCM48 was effective support because the incorporation of nickel increased the efficiency of gasification reactions compared to HZSM-5 (30). It mainly comes from the presence of mesopores and higher surface area (710.05 m2/g) providing more reaction sites and higher stability (less coke formation). Furthermore, the addition of promoters such as Co and Fe allowed the formation of Ni-Fe and Ni-Co alloys, resulting in even higher gas yield and overall H2 and CO selectivity due to the promotion of related reactions such as tar cracking, Boudouard, water gas shift and reforming and so on. Ni-Co alloy catalyst (10% Ni-5% Co/Al-MCM48) resulted in the highest H2 (∼52 vol%) selectivity due to the enhanced Ni dispersion and synergy effect between Ni and Co. Moreover, the application of bi-metal alloy on Al-MCM48 showed no coke formation and significantly reduced CO2 and hydrocarbon selectivity in the product gas. Overall, this study presented a promising solution for sewage sludge disposal in terms of clean H2 generation, reduction in CO2 and higher stability of metal based catalysts at the same time.
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Affiliation(s)
- Abid Farooq
- School of Environmental Engineering, University of Seoul, Seoul, 02504, South Korea
| | - Chang Hyun Ko
- School of Chemical Engineering, Chonnam National University, Gwangju, 61186, South Korea
| | - Y-K Park
- School of Environmental Engineering, University of Seoul, Seoul, 02504, South Korea.
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5
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Patterson I, Farooq A, Qiu M. Ultrasound biomicroscopy (UBM) in the diagnosis of acute fibrin pupillary block in a pseudophakic eye. J Fr Ophtalmol 2023; 46:560-561. [PMID: 37019783 DOI: 10.1016/j.jfo.2022.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 12/26/2022] [Indexed: 04/05/2023]
Affiliation(s)
- I Patterson
- Department of Ophthalmology and Visual Science, University of Chicago Medicine, 5841, S Maryland Avenue, 60637 Chicago, IL, United States.
| | - A Farooq
- Department of Ophthalmology and Visual Science, University of Chicago Medicine, 5841, S Maryland Avenue, 60637 Chicago, IL, United States
| | - M Qiu
- Department of Ophthalmology and Visual Science, University of Chicago Medicine, 5841, S Maryland Avenue, 60637 Chicago, IL, United States
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Valizadeh S, Khani Y, Farooq A, Kumar G, Show PL, Chen WH, Lee SH, Park YK. Microalgae gasification over Ni loaded perovskites for enhanced biohydrogen generation. Bioresour Technol 2023; 372:128638. [PMID: 36669624 DOI: 10.1016/j.biortech.2023.128638] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/12/2023] [Accepted: 01/15/2023] [Indexed: 06/17/2023]
Abstract
Steam gasification of microalgae upon perovskite oxide-supported nickel (Ni) catalysts was carried out for H2-rich gas production. Ni-perovskite oxide catalysts with partial substitution of B in perovskite structures (Ni/CaZrO3, Ni/Ca(Zr0.8Ti0.2)O3, and Ni/Ca(Zr0.6Ti0.4)O3) were synthesized and compared with those of the Ni/Al2O3 catalyst. The perovskite oxide supports improved Ni dispersion by reducing the particle size and strengthening the Ni-support interaction. Higher gas yields and H2 selectivity were obtained using Ni-perovskite oxide catalysts rather than Ni/Al2O3. In particular, Ni/Ca(Zr0.8Ti0.2)O3 showed the highest activity and selectivity for H2 production because of the synergetic effect of metallic Ni and elements present in the perovskite structures caused by high catalytic activity coupled with enhanced oxygen mobility. Moreover, increasing the temperature promoted the yield of gas and H2 content. Overall, considering the outstanding advantages of perovskite oxides as supports for Ni catalysts is a promising prospect for H2 production via gasification technology.
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Affiliation(s)
- Soheil Valizadeh
- School of Environmental Engineering, University of Seoul, Republic of Korea
| | - Yasin Khani
- School of Environmental Engineering, University of Seoul, Republic of Korea
| | - Abid Farooq
- School of Environmental Engineering, University of Seoul, Republic of Korea
| | - Gopalakrishnan Kumar
- School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Pau Loke Show
- Department of Chemical Engineering, Khalifa University, Shakhbout Bin Sultan St, Zone 1, Abu Dhabi, United Arab Emirates; Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 325035, China; Department of Sustainable Engineering, Saveetha School of Engineering, SIMATS, Chennai 602105, India; Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan, Malaysia
| | - Wei-Hsin Chen
- Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan; Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 411, Taiwan
| | - See Hoon Lee
- Department of Mineral Resources and Energy Engineering, Jeonbuk National University, 54896 Jeonju, Republic of Korea; Department of Environment and Energy, Jeonbuk National University, 567 Jeonju, Republic of Korea
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, Republic of Korea.
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Valizadeh S, Khani Y, Yim H, Chai S, Chang D, Farooq A, Show PL, Jeon BH, Khan MA, Jung SC, Park YK. H 2 generation from steam gasification of swine manure over nickel-loaded perovskite oxides catalysts. Environ Res 2023; 219:115070. [PMID: 36549497 DOI: 10.1016/j.envres.2022.115070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 12/11/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
In this study, nickel-loaded perovskite oxides catalysts were synthesized via the impregnation of 10%Ni on XTiO3 (X = Ce, Sr, La, Ba, Ca, and Fe) supports and employed in the catalytic steam gasification of swine manure to produce H2-rich syngas for the first time. The synthesized catalysts were characterized using BET, H2-TPR, XRD, HR-TEM, and EDX analysis. Briefly, using perovskite supports resulted in the production of ultrafine catalyst nanoparticles with a uniform dispersion of Ni particles. According to the catalytic activity test, the gas yield showed the increment as 10% Ni/LaTiO3 < 10% Ni/FeTiO3 < 10% Ni/CeTiO3 < 10% Ni/BaTiO3 < 10% Ni/SrTiO3 < 10% Ni/CaTiO3. Meanwhile, zero coke formation was achieved due to the oxygen mobility of prepared catalysts. Also, the increase in the H2 production for the applied catalysts was in the sequence as 10% Ni/CeTiO3 < 10% Ni/FeTiO3 < 10% Ni/LaTiO3 < 10% Ni/BaTiO3 < 10% Ni/SrTiO3 < 10% Ni/CaTiO3. The maximum H2 selectivity (∼48 vol%) obtained by10% Ni/CaTiO3 was probably due to the synergistic effect of Ni and Ti on enhancing the water-gas shift reaction, and Ca on creating the maximum oxygen mobility compared to other alkaline earth metals doped at the A place of perovskite. Overall, this study provides a suitable solution for enhanced H2 production through steam gasification of swine manure along with suggesting the appropriate supports to prevent Ni deactivation by lowering coke formation at the same time.
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Affiliation(s)
- Soheil Valizadeh
- School of Environmental Engineering, University of Seoul, 02504, Republic of Korea
| | - Yasin Khani
- School of Environmental Engineering, University of Seoul, 02504, Republic of Korea
| | - Hoesuk Yim
- School of Environmental Engineering, University of Seoul, 02504, Republic of Korea
| | - Suhyeong Chai
- School of Environmental Engineering, University of Seoul, 02504, Republic of Korea
| | - Dongwon Chang
- School of Environmental Engineering, University of Seoul, 02504, Republic of Korea
| | - Abid Farooq
- School of Environmental Engineering, University of Seoul, 02504, Republic of Korea
| | - Pau-Loke Show
- Department of Chemical and Environmental Engineering, Faculty Science and Engineering, University of Nottingham, Malaysia, 43500 Semenyih, Selangor Darul Ehsan, Malaysia; Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 325035, China; Department of Sustainable Engineering, Saveetha School of Engineering, SIMATS, Chennai 602105, India
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Moonis Ali Khan
- Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Sang-Chul Jung
- Department of Environmental Engineering, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Republic of Korea
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, 02504, Republic of Korea.
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Valizadeh S, Hakimian H, Farooq A, Jeon BH, Chen WH, Hoon Lee S, Jung SC, Won Seo M, Park YK. Valorization of biomass through gasification for green hydrogen generation: A comprehensive review. Bioresour Technol 2022; 365:128143. [PMID: 36265786 DOI: 10.1016/j.biortech.2022.128143] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/10/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Green and sustainable hydrogen from biomass gasification processes is one of the promising ways to alternate fossil fuels-based hydrogen production. First off, an overview of green hydrogen generation from biomass gasification processes is presented and the corresponding possible gasification reactions and the effect of respective experimental criteria are explained in detail. In addition, a comprehensive explanation of the catalytic effect on tar reduction and hydrogen generation via catalytic gasification is presented regarding the functional mechanisms of various types of catalysts. Furthermore, the commercialization aspects, the associated technical challenges and barriers, and the prospects of a biomass gasification process for green hydrogen generation are discussed. Finally, this comprehensive review provides the related advancements, challenges, and great insight of biomass gasification for the green hydrogen generation to realize a sustainable hydrogen society via biomass valorization.
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Affiliation(s)
- Soheil Valizadeh
- School of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea
| | - Hanie Hakimian
- School of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea
| | - Abid Farooq
- School of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Wei-Hsin Chen
- Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan; Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 411, Taiwan
| | - See Hoon Lee
- Department of Mineral Res. and Energy Engineering, Jeonbuk National University, Jeonju, Republic of Korea; Department of Environment & Energy, Jeonbuk National University, Jeonju, Republic of Korea
| | - Sang-Chul Jung
- Department of Environmental Engineering, Sunchon National University, Suncheon 57922, Republic of Korea
| | - Myung Won Seo
- School of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea.
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Venkatesulu B, Yoo R, Block A, Welsh J, Farooq A, Gupta G, Harkenrider M, Solanki A. Performance of Multiparametric MRI and PET Imaging in Identifying and Localizing Locally Radiorecurrent Prostate Cancer in a Phase I/II Trial of Focal Salvage HDR. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Farooq A, Islam H, Shaktawat S, Chiran J, Ul Islam J, Rao P, Ahmad B, Sheikh M. A rare presentation of widespread metastatic RCC (mRCC) without any evidence of renal primary. EUR UROL SUPPL 2022. [DOI: 10.1016/s2666-1683(22)00967-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Chiran J, Farooq A, Anwar B, Billington P, Abuismaeil M. TU7.5 Prostate cancer pick up rate in pure LIKERT 3 lesions on MRI prostate? A retrospective review of 157 cases in a district general hospital. Br J Surg 2022. [DOI: 10.1093/bjs/znac248.067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Abstract
Introduction
LIKERT 4 and 5 lesions picked up on MRI prostate have a high chance of picking up high grade high volume prostate cancer so they under biopsy. It is quite challenging to decide whether to biopsy pure LIKERT 3 lesions. In our retrospective review of 500 prostate MRI scan we looked for correlation between pure LIKERT 3 lesions and the risk of finding prostate cancer after biopsy.
Materials and Methods
Pre-biopsy Multi parametric MRI prostate was done in 500 cases and reported by two consultant radiologists. 157 mp Prostate MRIs showed one or more pure LIKERT 3 lesions . All 157 cases underwent targeted and saturation biopsies. 91 biopsies (57.96%) out of 157 were benign. 66 biopsies (42%) out of 157 showed prostate cancer. Gleeson score is shown in the table below
Conclusion
157 cases with pure LIKERT 3 lesions on MRI prostate 58% were benign. 42% who had positive biopsies low and intermediate risk i.e. Gleeson 6 or 7 (95.4%) prostate cancer was found. High grade prostate cancer i.e. Gleeson 8 and 9 was seen in 3%. Patients with pure LIKERT 3 lesion on mp MRI prostate should be counselled about the risks of finding prostate cancer, likely grade to help them make an informed decision about PSA monitoring only or undergo prostate biopsies.
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Affiliation(s)
| | - Abid Farooq
- Blackpool Victoria Hospital , Blackpool, FY3 8NR , UK
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12
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Farooq A, Shiung Lam S, Hoon Rhee G, Lee J, Ali Khan M, Jeon BH, Park YK. Technical benefits of using methane as a pyrolysis medium for catalytic pyrolysis of Kraft lignin. Bioresour Technol 2022; 353:127131. [PMID: 35398535 DOI: 10.1016/j.biortech.2022.127131] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 04/02/2022] [Accepted: 04/05/2022] [Indexed: 06/14/2023]
Abstract
Catalytic fast pyrolysis of low sulfonated Kraft lignin was performed under different atmospheric environments such as N2, CH4, and the gas derived from CH4 decomposition (CH4-D). The use of Zn- or Mo-loaded HZSM-5 as catalyst led to a higher pyrolytic oil yield compared to parent HZSM-5 in CH4 and CH4-D atmospheres. The yields of benzene, toluene, and xylenes were increased by the synergistic effects from metal loading, higher H/Ceff ratio, higher acidity, and CH4 activation. The enhanced CH4 activation via metal loading resulted in higher methylation of alkyl moieties and 33% increase in the total yield of benzene, toluene, and xylenes in comparison to parent HZSM-5. A higher H/Ceff ratio of 6 via CH4 decomposition led to the formation of a hydro-pyrolysis environment. Moreover, the CH4-D environment showed H2/CH4 ratio of 0.36 in the product gas which warranted the presence of more H2 under the CH4-D pyrolysis environment.
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Affiliation(s)
- Abid Farooq
- School of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea
| | - Su Shiung Lam
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Gwang Hoon Rhee
- Department of Mechanical and Information Engineering, University of Seoul, Seoul 02504, Republic of Korea
| | - Jechan Lee
- Department of Environmental. and Safety Engineering & Department of Energy Systems Research, Ajou University, Suwon 16499, Republic of Korea
| | - Moonis Ali Khan
- Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Byong-Hun Jeon
- Department of Earth Resources & Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea.
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13
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Santoro G, Kulkarni S, Dhillon D, Vaitses M, Farooq A, Rajan B, Bilal M, Dayan M, Lien K. Abstract No. 47 Eliminating sedation during vertebral augmentation using basivertebral nerve block. J Vasc Interv Radiol 2022. [DOI: 10.1016/j.jvir.2022.03.128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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14
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Farooq A, Lee J, Song H, Ko CH, Lee IH, Kim YM, Rhee GH, Pyo S, Park YK. Valorization of hazardous COVID-19 mask waste while minimizing hazardous byproducts using catalytic gasification. J Hazard Mater 2022; 423:127222. [PMID: 34560479 DOI: 10.1016/j.jhazmat.2021.127222] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 09/01/2021] [Accepted: 09/10/2021] [Indexed: 05/24/2023]
Abstract
This study proposes a method to valorize hazardous waste such as used COVID-19 face mask via catalytic gasification over Ni-loaded ZSM-5 type zeolites. The 25% Ni was found as an optimal loading on ZSM-5 in terms of H2 production. Among different zeolites (ZSM-5(30), ZSM-5(80), ZSM-5(280), mesoporous (m)-ZSM-5(30), and HY(30)), 25% Ni/m-ZSM-5(30) led to the highest H2 selectivity (45.04 vol%), most likely because of the highest Ni dispersion on the m-ZSM-5(30) surface, high porosity, and acid site density of the m-ZSM-5(30). The content of N-containing species (e.g., caprolactum and nitriles) in the gasification product was also reduced, when steam was used as gasifying agent, which is the source of potentially hazardous air pollutants (e.g., NOx). The increase in the SiO2/Al2O3 ratio resulted in lower tar conversion and lower H2 generation. At comparable conditions, steam gasification of the mask led to ~15 vol% higher H2 selectivity than air gasification. Overall, the Ni-loaded zeolite catalyst can not only suppress the formation of hazardous substances but also enhance the production of hydrogen from the hazardous waste material such as COVID-19 mask waste.
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Affiliation(s)
- Abid Farooq
- School of Environmental Engineering, University of Seoul, 163 Seoulsiripdae-ro, Seoul 02504, Republic of Korea
| | - Jechan Lee
- Department of Environmental and Safety Engineering & Department of Energy Systems Research, Ajou University, 206 World cup-ro, Suwon 16499, Republic of Korea
| | - Hocheol Song
- Department of Environment and Energy, Sejong University, 209 Neungdong-ro, Seoul 05006, Republic of Korea
| | - Chang Hyun Ko
- School of Chemical Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Im-Hack Lee
- School of Environmental Engineering, University of Seoul, 163 Seoulsiripdae-ro, Seoul 02504, Republic of Korea
| | - Young-Min Kim
- Department of Environmental Engineering, Daegu University, Gyeonsan 38453, Republic of Korea
| | - Gwang Hoon Rhee
- Department of Mechanical and Information Engineering, University of Seoul, 163 Seoulsiripdae-ro, Seoul 02504, Republic of Korea
| | - Sumin Pyo
- School of Environmental Engineering, University of Seoul, 163 Seoulsiripdae-ro, Seoul 02504, Republic of Korea
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, 163 Seoulsiripdae-ro, Seoul 02504, Republic of Korea.
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15
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Islam H, Sheikh M, Ghiblawi S, Abuismaeil M, Farooq A. Assessing the safety of transperineal prostate biopsy with only a single dose of amoxicillin/clavulanic acid using the PrecisionPoint™ Transperineal Access System (PPTAS); A retrospective review of 500 cases and technique description. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00201-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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16
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Farooq A, Rhee GH, Lee IH, Khan MA, Lee SH, Jung SC, Jeon BH, Chen WH, Park YK. Waste furniture gasification using rice husk based char catalysts for enhanced hydrogen generation. Bioresour Technol 2021; 341:125813. [PMID: 34454233 DOI: 10.1016/j.biortech.2021.125813] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/15/2021] [Accepted: 08/17/2021] [Indexed: 06/13/2023]
Abstract
Present study provides biohydrogen production methods from waste furniture via catalytic steam gasification with bio-char catalysts (raw char, KOH-activated char and steam-activated char). Total gas yield for the prepared chars was in the order of KOH-activated char > steam-activated char > raw char, whereas, H2 selectivity was in the sequence of raw char > steam-activated char > KOH-activated char. Though KOH-activated char showed the highest gas yield, highest H2 selectivity was obtained at the gasification experiment with raw char due to the large amount of Ca and K and its reasonable surface area (146.89 m2/g). Although the activation of raw biochar results in the increase of gas yield, it has the negative effect on H2 generation due to the removal of alkali and alkaline earth metals for the KOH activated char and steam-activated char. This study shows that raw bio-char could be a potential solution for eco-friendly hydrogen production.
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Affiliation(s)
- Abid Farooq
- School of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea
| | - Gwang Hoon Rhee
- Department of Mechanical and Information Engineering, University of Seoul, Seoul 02504, Republic of Korea
| | - Im-Hack Lee
- School of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea
| | - Moonis Ali Khan
- Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - See Hoon Lee
- Deparment of Mineral Resource and Energy Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Sang-Chul Jung
- Department of Environmental Engineering, Sunchon National University, Suncheon 57923, Republic of Korea
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Wei-Hsin Chen
- Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan; Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 411, Taiwan
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea.
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17
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Farooq A, Zubair M, Wadood HZ, Deen KM. Effect of Pseudomonas aeruginosa Strain ZK Biofilm on the Mechanical and Corrosion Behavior of 316L Stainless Steel and α-brass. J ELECTROCHEM SCI TE 2021. [DOI: 10.33961/jecst.2020.01718] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
This research work aims to investigate the effect of the aerobic bacterium, Pseudomonas aeruginosa on the mechanical and electrochemical properties of the 316L stainless steel and α-brass. These properties of both the alloys were determined after 7 days of exposure to the controlled and inoculated media at 37°C. The microstructural and electrochemical test results revealed the deleterious effects of Pseudomonas aeruginosa. After exposure to the inoculated medium, the scanning electron microscopy (SEM) results showed the larger pitting and formation of relatively dense biofilm on α-brass compared to 316L stainless steel. The tensile strength and hardness of 316L stainless steel were slightly affected after exposure to the controlled and inoculated media. After exposure to the controlled medium and inoculated media, the tensile strength of the α-brass was least affected but a significant decrease in the hardness (from 165 HV to 124 HV) was observed due to the severe attack induced by the Pseudomonas aeruginosa. Similarly, the open-circuit potential of the 316L stainless steel in the inoculated medium was measured to be less active (−410 mV vs Ag/AgCl) than α-brass (−550 mV vs Ag/AgCl). In the inoculated medium, potentiodynamic polarization curves confirmed the severe attack of Pseudomonas aeruginosa on α-brass (7.15 × 10−2 mm/year) compared to 316L stainless steel which registered a corrosion rate of 5.14 × 10−4 mm/year.
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18
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Farooq A, Jang SH, Lee SH, Jung SC, Rhee GH, Jeon BH, Park YK. Catalytic steam gasification of food waste using Ni-loaded rice husk derived biochar for hydrogen production. Chemosphere 2021; 280:130671. [PMID: 34162076 DOI: 10.1016/j.chemosphere.2021.130671] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/10/2021] [Accepted: 04/20/2021] [Indexed: 06/13/2023]
Abstract
The disposal of food waste (FW) is a major cause of environmental contamination. This study reports an environmentally friendly FW disposal method in the form of catalytic steam gasification using various types of Ni-loaded chars (untreated char, steam-treated char, and ZnCl2-treated char). The results were also compared with the gasification results from the Ni catalysts supported on commercial α-alumina (Ni/α-Al2O3). The Ni/steam-treated char showed the maximum hydrogen generation (0.471 mol/(g feedstock•g cat)) because of the high reducibility, high nickel dispersion, large amount of inherent K and Ca, and moderate surface area. The overall gas and H2 yield were observed in the following order: Ni/steam-treated char > Ni/ZnCl2 treated char > Ni/untreated char > Ni/α-Al2O3. Brunauer-Emmett-Teller analysis of various catalysts showed that the treated chars have a mesoporous structure, and the X-ray diffraction, X-ray fluorescence spectroscopy, scanning electron microscopy - energy dispersive spectroscopy showed that the presence of silica in the chars providing the stable support for the Ni loading and prevented coke formation. The chars obtained from biomass pretreatment could be a potential solution for preventing coke formation at high temperatures, thereby increasing the gas yield and enhancing hydrogen generation.
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Affiliation(s)
- Abid Farooq
- School of Environmental Engineering, University of Seoul, Seoul, 02504, Republic of Korea
| | - Seong-Ho Jang
- Department of Bio-Environmental Energy, Pusan National University, Miryang, 50463, Republic of Korea
| | - See Hoon Lee
- Department of Mineral Resource and Energy Engineering, Jeonbuk National University, Jeonju, 54896, Republic of Korea
| | - Sang-Chul Jung
- Department of Environmental Engineering, Sunchon National University, Suncheon, 57923, Republic of Korea
| | - Gwang Hoon Rhee
- Department of Mechanical and Information Engineering, University of Seoul, Seoul, 02504, Republic of Korea
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, Seoul, 02504, Republic of Korea.
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19
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Farooq A, Park YK. Emulsification of Catalytic Pyrolysis Oil from Nanoporous Zeolite Socony Mobil-5 with Diesel Using a Range of Emulsifiers in an Ultrasonicator. J Nanosci Nanotechnol 2021; 21:3955-3959. [PMID: 33715724 DOI: 10.1166/jnn.2021.19179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Catalytic pyrolysis oil (CPO) was produced from lignin using the ex-situ mechanism and nanoporous HZSM-5 (SiO₂/Al₂O₃ = 50) as a catalyst. The oil contained phenolics, esters, acids, and benzene derivatives as the major constituents. The emulsification of CPO in diesel was tested with several emulsifier combinations such as Span 80 and Tween 60, Span 80 and Atlox 4916, and Atlox 4916 and Zephrym PD3315 in the HLB range of 5.8-7.3. The HLB value of 5.8 using the combination of Span 80 and Atlox 4916 and the CPO:emulsifier:diesel ratio of 5:2:93 (wt%), provided a stable emulsion for 10 days. The physiochemical properties of that emulsion were comparable to diesel. Hence, emulsions of CPO and diesel can potentially be used as a diesel engine fuel.
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Affiliation(s)
- Abid Farooq
- School of Environmental Engineering, University of Seoul, Seoul, 02504, South Korea
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, Seoul, 02504, South Korea
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20
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Kim J, Lee JE, Farooq A, Kim SC, Jung SC, Song J, Kim YM, Park YK. Catalytic Oxidation of Toluene with Ozone Over the Ru-Mn/Desilicated Nanoporous H-Zeolite Socony Mobil-5 at Room Temperature. J Nanosci Nanotechnol 2021; 21:3868-3871. [PMID: 33715707 DOI: 10.1166/jnn.2021.19194] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this study, the effect of Ru-Mn bimetallic catalysts in combination with a zeolite support on the removal of toluene in the presence of ozone at room temperature was investigated. Desili-cated HZSM-5 (DZSM) was fabricated and applied as a Ru-Mn support for the removal of toluene (100 ppm) in the presence of ozone (1000 ppm) at room temperature. The surface area, pore volume, and average pore size of Ru-Mn with a DZSM support (RuMn/DZSM) were measured and compared with those of Ru-Mn/HZSM-5 (RuMn/HZSM). The pore size of RuMn/DZSM (69 Å) was much larger than that of RuMn/HZSM-5 (5.5 Å). In addition, the pore volumes of RuMn/DZSM and RuMn/HZSM were 0.64 and 0.25 cm³/g, respectively. Furthermore, the ratios of Mn³+/Mn⁴+ and Ovacancy/Olattice of RuMn/DZSM were larger than those of RuMn/HZSM-5. The removal efficiency of toluene of RuMn/DZSM was higher than that of RuMn/HZSM due to its larger pore volume, pore size, and the increased ratios of Mn³+/Mn⁴+ and Ovacancy/Olattice.
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Affiliation(s)
- Jihee Kim
- School of Environment Engineering, University of Seoul, Seoul, 02504, Republic of Korea
| | - Jung Eun Lee
- School of Environment Engineering, University of Seoul, Seoul, 02504, Republic of Korea
| | - Abid Farooq
- School of Environment Engineering, University of Seoul, Seoul, 02504, Republic of Korea
| | - Sang Chai Kim
- Department of Environmental Education, Mokpo National University, Mokpo, 58554, Korea
| | - Sang-Chul Jung
- Department of Environmental Engineering, Sunchon National University, Suncheon, 57922, Korea
| | - JiHyeon Song
- Department of Civil and Environmental Engineering, Sejong University, Seoul 05006, Korea
| | - Young-Min Kim
- Department of Environmental Engineering, Daegu University, Gyeongsan, 38453, Korea
| | - Young-Kwon Park
- School of Environment Engineering, University of Seoul, Seoul, 02504, Republic of Korea
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21
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Farooq A, Moogi S, Kwon EE, Lee J, Kim YM, Jae J, Jung SC, Park YK. Catalytic upgrading of Quercus Mongolica under methane environment to obtain high yield of bioaromatics. Environ Pollut 2021; 272:116016. [PMID: 33248830 DOI: 10.1016/j.envpol.2020.116016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/24/2020] [Accepted: 09/28/2020] [Indexed: 06/12/2023]
Abstract
This work investigated the impact of pyrolysis medium and catalyst on the production of bio-BTX (benzene, toluene, and xylene) from Quercus Mongolica (Q. Mongolica) via catalytic pyrolysis. Two different pyrolysis media (N2 and CH4) and five different zeolite catalysts (HY, HBeta, HZSM-5, 1 wt% Ni/HZSM-5, and 1 wt% Ga/HZSM-5) were considered for the Q. Mongolica pyrolysis. The HZSM-5 yielded more BTX than the HY and HBeta due to its strong acidity. The employment of CH4 as the pyrolysis medium improved the BTX yield (e.g., 2.7 times higher total BTX yield in CH4 than in N2) and resulted in low coke yield (e.g., 5.27% for N2-pyrolysis and 2.57% for CH4-pyrolysis) because the CH4-drived hydrogen simulated a hydropyrolysis condition and facilitated dehydroaromatization reaction. CH4 also led to direct coupling, Diels-Alder, and co-aromatization reactions during the pyrolysis, contributing to enhancing the BTX yield. The addition of Ga to the HZSM-5 could further increase the BTX yield by means of facilitating hydrocracking/demethylation and methyl radical formation from CH4 assisting the generation of >C2 alkenes that could be further converted into BTX on acid sites of the HZSM-5.
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Affiliation(s)
- Abid Farooq
- School of Environmental Engineering, University of Seoul, Seoul, 02504, Republic of Korea
| | - Surendar Moogi
- School of Environmental Engineering, University of Seoul, Seoul, 02504, Republic of Korea
| | - Eilhann E Kwon
- Department of Environment and Energy, Sejong University, Seoul, 05006, Republic of Korea
| | - Jechan Lee
- Department of Environmental and Safety Engineering, Ajou University, Suwon, 16499, Republic of Korea; Department of Energy Systems Research, Ajou University, Suwon, 16499, Republic of Korea
| | - Young-Min Kim
- Department of Environmental Engineering, Daegu University, Gyeongsan, 38453, Republic of Korea
| | - Jungho Jae
- School of Chemical and Biomolecular Engineering, Pusan National University, Busan, 46241, Republic of Korea
| | - Sang-Chul Jung
- Department of Environmental Engineering, Sunchon National University, Sunchon, 57922, Republic of Korea
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, Seoul, 02504, Republic of Korea.
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22
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Farooq A, Moogi S, Jang SH, Kannapu HPR, Valizadeh S, Ahmed A, Lam SS, Park YK. Linear low-density polyethylene gasification over highly active Ni/CeO2-ZrO2 catalyst for enhanced hydrogen generation. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2020.11.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Valizadeh S, Lam SS, Ko CH, Lee SH, Farooq A, Yu YJ, Jeon JK, Jung SC, Rhee GH, Park YK. Biohydrogen production from catalytic conversion of food waste via steam and air gasification using eggshell- and homo-type Ni/Al 2O 3 catalysts. Bioresour Technol 2021; 320:124313. [PMID: 33197736 DOI: 10.1016/j.biortech.2020.124313] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/15/2020] [Accepted: 10/21/2020] [Indexed: 06/11/2023]
Abstract
Steam and air gasification with 5 wt% Ni/Al2O3 eggshell (Ni-EG) and homo (Ni-H) catalysts were performed for the first time to produce biohydrogen from food waste. The steam gasification produced comparably higher gas yield than air gasification. In non-catalytic experiments, steam gasification generated a higher volume percent of H2, whereas more CO, CO2, CH4, and C2-C4 were produced in air gasification. Ni-EG demonstrated higher potential to obtain H2-rich gases with a low C2-C4 content compared to that obtained by Ni-H, particularly in steam gasification at 800 °C, which produced gaseous products with 59.48 vol% H2. The long-term activity of both catalysts in steam gasification was evaluated, and Ni-EG exhibited higher stability than Ni-H. The ideal distribution of Ni species on the outer region of γ-Al2O3 pellets in Ni-EG resulted in higher activity, stability, and selectivity than Ni-H in both steam and air gasification.
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Affiliation(s)
- Soheil Valizadeh
- School of Environment Engineering, University of Seoul, Seoul 02505, Republic of Korea
| | - Su Shiung Lam
- Pyrolysis Technology Research Group, Institute of Tropical Aquaculture and Fisheries (Akuatrop), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Chang Hyun Ko
- School of Chemical Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - See Hoon Lee
- Department of Mineral Resources & Energy Engineering, Chonbuk National University, Jeonju 54896, Republic of Korea
| | - Abid Farooq
- School of Environment Engineering, University of Seoul, Seoul 02505, Republic of Korea
| | - Yeon Jeong Yu
- School of Chemical Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Jong-Ki Jeon
- Department Chemical Engineering, Kongju National University, Cheonan 31081, Republic of Korea
| | - Sang-Chul Jung
- Department of Environmental Engineering, Sunchon National University, Suncheon 57923, Republic of Korea
| | - Gwang Hoon Rhee
- Department of Mechanical and Information Engineering, University of Seoul, Seoul 02505, Republic of Korea
| | - Young-Kwon Park
- School of Environment Engineering, University of Seoul, Seoul 02505, Republic of Korea.
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24
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Hwang Y, Farooq A, Lee HW, Jang SH, Park SH, Lee MH, Choi SC, Park YK. Direct conversion of NO and SO 2 in flue gas into fertilizer using ammonia and ozone. J Hazard Mater 2020; 397:122581. [PMID: 32417605 DOI: 10.1016/j.jhazmat.2020.122581] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 03/02/2020] [Accepted: 03/23/2020] [Indexed: 06/11/2023]
Abstract
This study focused on the simultaneous removal of NO and SO2 from an industrial flue gas stream. To evaluate the removal efficiency of NO and SO2 using O3 and NH3, the consumption of two reactants (O3 and NH3) in line with the conversion of NO and SO2 was quantified experimentally. In addition, NO and SO2 were converted to valuable fertilizers, NH4NO3 and (NH4)2SO4. To identify a principle strategy to enhance the generation of fertilizer, Fourier transform infrared spectroscopy was used to examine the reaction mechanisms for the formation of NH4NO3 and (NH4)2SO4. Acceleration of SO2 oxidation could be achieved effectively by adding NO to a gas mixture of SO2, NH3, and O3. The formation of HNO3 might be enhanced by the simultaneous feeding of NO and SO2. Particle generation was also 10 times higher for NH3/(NO + SO2) than for NH3/NO and for NH3/SO2, which is a prominent feature of this study. Moreover, the introduction of steam had a positive influence on particle generation. This method offers dual applications for NO and SO2 removal from a flue gas stream and direct fertilizer generation.
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Affiliation(s)
- Yujin Hwang
- School of Environmental Engineering, University of Seoul, Seoul 02504, South Korea
| | - Abid Farooq
- School of Environmental Engineering, University of Seoul, Seoul 02504, South Korea
| | - Hyung Won Lee
- School of Environmental Engineering, University of Seoul, Seoul 02504, South Korea
| | - Seong-Ho Jang
- Department of BioEnvironmental Energy, Pusan National University, Miryang 50463, South Korea
| | - Sung Hoon Park
- Department of Environmental Engineering, Sunchon National University, Suncheon 57922, South Korea
| | - Myong-Hwa Lee
- Department of Environmental Engineering, Kangwon National University, Chuncheon 24341, South Korea
| | - Seuk Cheun Choi
- Clean Energy System R&D Department, Korea Institute of Industrial Technology, Cheonan 31056, South Korea
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, Seoul 02504, South Korea.
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25
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Farooq A, Lee H, Rhee GH, Cho EB, Park YK. Yellow Poplar Gasification Over Ni Silicate and Ni/Silica. J Nanosci Nanotechnol 2020; 20:5667-5670. [PMID: 32331155 DOI: 10.1166/jnn.2020.17635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The activity of Ni silicates having different Ni/Si molar ratio (0.5 and 1) and Ni/silica were tested on biomass gasification. Ni silicate (Ni/Si= 0.5) and Ni/silica produced the higher gas yield than Ni silicate (Ni/Si = 1.0). The larger amount of H₂ and CO were produced over Ni silicate (Ni/Si = 0.5) and Ni/silica compared those over Ni silicate (Ni/Si = 1.0). The catalysts were characterized using BET and XRD analysis. Ni silicate (Ni/Si = 0.5) showed promising activity for the production of syngas at higher temperature and can be employed in gasification.
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Affiliation(s)
- Abid Farooq
- School of Environmental Engineering, University of Seoul, Seoul 02504, Korea
| | - Heejin Lee
- School of Environmental Engineering, University of Seoul, Seoul 02504, Korea
| | - Gwang Hoon Rhee
- Department of Mechanical and Information Engineering, University of Seoul, Seoul 02504, Korea
| | - Eun-Bum Cho
- Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 01811, Korea
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, Seoul 02504, Korea
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26
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Abdul Latif A, Butt A, Mansha M, Fatima S, Farooq A. Prevalence of intestinal parasites and associated risk factors in primary school children, Lahore. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa166.685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Intestinal parasites are the major reasons for deaths all over the world especially in the third world. Poverty, poor sanitation, unclean drinking water, moist environment are the conditions for these parasitic ailments. Poor personal hygiene among children is considered an effective cause of parasitic invasion. In present study the prevalence of intestinal parasites and their associated risk factors were determined among the school children of Lahore. A total of 150 faecal samples were collected from the children of 3-15 years of age belonging to Private and Government Schools. Different techniques like Direct smear method, Formalin ether concentration, Sedimentation and McMaster were used to identify different stages of intestinal parasites. The parasites found were Giardia lamblia (4.66%), Entamoeba histolytica (3.3%), Ascaris lumbricoides (4.66%), Taenia saginata (4%), Hymenolepis nana (2%), Trichuris trichura (2.66%) and Enterobius vermicularis (4%). A. lumbricoides was found to the most frequent of all parasites. The prevalence was higher among the children, with poor hygiene, having lack of education especially of mothers because they play a big role in child's upbringing and maintaining his good health. Educating cleanness alertness on parasitic diseases and application of helpful strategies for parents to raise socioeconomic circumstances may decrease the load of infection.
Key messages
Educating cleanness alertness on parasitic diseases and application of helpful strategies for parents to raise socioeconomic circumstances may decrease the load of infection. Health is Wealth.
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Affiliation(s)
- A Abdul Latif
- Zoology, Lahore College for Women University, Lahore, Pakistan
| | - A Butt
- Zoology, Lahore College for Women University, Lahore, Pakistan
| | - M Mansha
- Dvision of Science and Technology, University of Education, Lahore, Pakistan
| | - S Fatima
- Zoology, Lahore College for Women University, Lahore, Pakistan
| | - A Farooq
- Peads SIMS, Services, Lahore, Pakistan
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Farooq A, Lee HW, Jae J, Kwon EE, Park YK. Emulsification characteristics of ether extracted pyrolysis-oil in diesel using various combinations of emulsifiers (Span 80, Atlox 4916 and Zephrym PD3315) in double reactor system. Environ Res 2020; 184:109267. [PMID: 32113026 DOI: 10.1016/j.envres.2020.109267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 02/11/2020] [Accepted: 02/16/2020] [Indexed: 06/10/2023]
Abstract
Emulsification is a cost effective and simple method to use pyrolysis oil (or bio-oil) along with diesel as an emulsified fuel. Several combinations of emulsifiers, such as Span 80 and Atlox 4916, Span 80 and Zephrym PD3315, and Atlox 4916 and Zephrym PD3315, were tested to obtain stable emulsions. Two set of reactors (ultrasonicator and agitator-based mechanical reactor system) were used for the process. The ether-extracted pyrolysis oil (EEO), emulsifier, and diesel content of 10%-15%, 3%, and 82-87% were exposed to an ultrasonic power of 40% and with an agitation rate of 900 rpm. The emulsions obtained using Span 80 and Zephrym PD3315 showed stratification within 10 min. The emulsions for Span 80 and Atlox 4916 with a ratio of 3/15/82 for Emulsifer/EEO/Diesel, and for Atlox 4916 and Zephrym PD3315 emulsifiers with a ratio of 3/10/87 for Emulsifer/EEO/Diesel remained stable for more than 15 days. The functional groups analysis showed the stability of the emulsion for Span 80 and Atlox 4916, whereas a change in the absorbance intensity was observed when Atlox 4916 and Zephrym PD3315 were used, indicating stratification.
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Affiliation(s)
- Abid Farooq
- School of Environmental Engineering, University of Seoul, Seoul, 02504, South Korea
| | - Hyung Won Lee
- School of Environmental Engineering, University of Seoul, Seoul, 02504, South Korea
| | - Jungho Jae
- School of Chemical and Biomolecular Engineering, Pusan National University, Busan, 46241, South Korea
| | - Eilhann E Kwon
- Department of Environment and Energy, Sejong University, Seoul, 05006, South Korea
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, Seoul, 02504, South Korea.
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Lee HW, Farooq A, Jang SH, Kwon EE, Jae J, Lam SS, Jung SC, Park YK. Enhanced bioaromatics synthesis via catalytic co-pyrolysis of cellulose and spent coffee ground over microporous HZSM-5 and HY. Environ Res 2020; 184:109311. [PMID: 32145550 DOI: 10.1016/j.envres.2020.109311] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 02/05/2020] [Accepted: 02/25/2020] [Indexed: 06/10/2023]
Abstract
Catalytic co-pyrolysis (CCP) of spent coffee ground (SCG) and cellulose over HZSM-5 and HY was characterized thermogravimetrically, and a catalytic pyrolysis of two samples was conducted using a tandem micro reactor that directly connected with gas chromatography-mass spectrometry. To access the more fundamental investigations on CCP, the effects of the zeolite pore structure, reaction temperature, in-situ/ex-situ reaction mode, catalyst to feedstock ratio, and the SCG and cellulose mixing ratio were experimentally evaluated. The temperature showing the highest thermal degradation rate of cellulose with SCG slightly delayed due to the interactions during the thermolysis of two samples. HZSM-5 in reference to HY produced more aromatic hydrocarbons from CCP. With respect to the reaction temperature, the formation of aromatic hydrocarbons increased with the pyrolytic temperature. Moreover, the in-situ/ex-situ reaction mode, catalyst/feedstock, and cellulose/SCG ratio were optimized to improve the aromatic hydrocarbon yield.
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Affiliation(s)
- Hyung Won Lee
- School of Environmental Engineering, University of Seoul, Seoul, 02504, South Korea
| | - Abid Farooq
- School of Environmental Engineering, University of Seoul, Seoul, 02504, South Korea
| | - Seong-Ho Jang
- Department of BioEnvironmental Energy, Pusan National University, Miryang, 50463, South Korea
| | - Eilhann E Kwon
- Department of Environment and Energy, Sejong University, Seoul, 05006, South Korea
| | - Jungho Jae
- School of Chemical and Biomolecular Engineering, Pusan National University, Busan, 46241, South Korea
| | - Su Shiung Lam
- Pyrolysis Technology Research Group, Institute of Tropical Aquaculture and Fisheries (AKUATROP) & Institute of Tropical Biodiversity and Sustainable Development (Bio-D Tropika), Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
| | - Sang-Chul Jung
- Department of Environmental Engineering, Sunchon National University, Suncheon, 57922, South Korea
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, Seoul, 02504, South Korea.
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Lin BJ, Chen WH, Lin YY, Chang JS, Farooq A, Singh Y, Ong HC, Show PL. An evaluation of thermal characteristics of bacterium Actinobacillus succinogenes for energy use and circular bioeconomy. Bioresour Technol 2020; 301:122774. [PMID: 31954973 DOI: 10.1016/j.biortech.2020.122774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 01/04/2020] [Accepted: 01/07/2020] [Indexed: 06/10/2023]
Abstract
The thermal characteristics of Actinobacillus succinogenes (AS) from pyrolysis, torrefaction, and combustion are analyzed to evaluate the potential of this biomass as a renewable fuel. AS pyrolysis can be classified into four stages, and its main decomposition zone is at 200-500 °C. The solid yield of AS after 60 min torrefaction is over 60 wt%, and the torrefaction severity index map indicates that a high torrefaction temperature with a short duration has a more profound influence on its decomposition. The Py-GC/MS analysis of AS suggests that the volatile products from 500 °C pyrolysis are similar to microalgae-derived pyrolysis bio-oils. The combustibility index (S) of AS is 4.07 × 10-7 which is much higher than that of lignite coal (0.39 × 10-7) and bituminous coal (0.18 × 10-7), and close to those of biochar and bio-oil. The obtained results are conducive to the development of microorganisms as fuel to achieve a circular bioeconomy.
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Affiliation(s)
- Bo-Jhih Lin
- Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan
| | - Wei-Hsin Chen
- Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan; Department of Chemical and Materials Engineering, College of Engineering, Tunghai University, Taichung 407, Taiwan; Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 411, Taiwan; Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 701, Taiwan.
| | - Yu-Ying Lin
- Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan
| | - Jo-Shu Chang
- Department of Chemical and Materials Engineering, College of Engineering, Tunghai University, Taichung 407, Taiwan; Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 701, Taiwan; Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan
| | - Abid Farooq
- Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan
| | - Yashvir Singh
- Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan; Department of Mechanical Engineering, Graphic Era University, Dehradun, Uttarakhand, India
| | - Hwai Chyuan Ong
- Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Pau Loke Show
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Selangor Darul Ehsan, Malaysia
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CHANCHLANI R, Young C, Farooq A, Sangar S, Sethi S, Raina R. SAT-232 HEMODIALYSIS IN CHILDREN AND ADOLESCENTS: A SYSTEMATIC REVIEW. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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31
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Farooq A, Imran M, Farooq A, Latif S, Liaqat M, Abbas Z, Bratu G, Mitu L. Antibacterial activity studies of Co(II), Ni(II), Cu(II) and Zn(II) complexes with Mannich base ligand. B CHEM SOC ETHIOPIA 2019. [DOI: 10.4314/bcse.v33i3.9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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32
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Hwang Y, Farooq A, Park SH, Kim KH, Lee MH, Choi SC, Kim MY, Park RS, Park YK. NH3-induced removal of NOx from a flue gas stream by silent discharge ozone generation in a double reactor system. KOREAN J CHEM ENG 2019. [DOI: 10.1007/s11814-019-0325-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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Dickerson LD, Farooq A, Bano F, Kleeff J, Baron R, Raraty M, Ghaneh P, Sutton R, Whelan P, Campbell F, Healey P, Neoptolemos JP, Yip VS. Differentiation of Autoimmune Pancreatitis from Pancreatic Cancer Remains Challenging. World J Surg 2019; 43:1604-1611. [PMID: 30815742 DOI: 10.1007/s00268-019-04928-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Autoimmune pancreatitis (AIP) is an uncommon form of chronic pancreatitis. Whilst being corticosteroid responsive, AIP often masquerades radiologically as pancreatic neoplasia. Our aim is to appraise demographic, radiological and histological features in our cohort in order to differentiate AIP from pancreatic malignancy. METHODS Clinical, biochemical, histological and radiological details of all AIP patients 1997-2016 were analysed. The initial imaging was re-reviewed according to international guidelines by three blinded independent radiologists to evaluate features associated with autoimmune pancreatitis and pancreatic cancer. RESULTS There were a total of 45 patients: 25 in type 1 (55.5%), 14 type 2 (31.1%) and 6 AIP otherwise not specified (13.3%). The median (IQR) age was 57 (51-70) years. Thirty patients (66.6%) were male. Twenty-six patients (57.8%) had resection for suspected malignancy and one for symptomatic chronic pancreatitis. Three had histologically proven malignancy with concurrent AIP. Two patients died from recurrent pancreatic cancer following resection. Multidisciplinary team review based on radiology and clinical history dictated management. Resected patients (vs. non-resected group) were older (64 vs. 53, p = 0.003) and more frequently had co-existing autoimmune pathologies (22.2 vs. 55.6%, p = 0.022). Resected patients also presented with less classical radiological features of AIP, which are halo sign (0/25 vs. 3/17, p = 0.029) and loss of pancreatic clefts (18/25 vs. 17/17, p = 0.017). There were no differences in demographic features other than age. CONCLUSION Despite international guidelines for diagnosing AIP, differentiation from pancreatic cancer remains challenging. Resection remains an important treatment option in suspected cancer or where conservative treatment fails.
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Affiliation(s)
- L D Dickerson
- Pancreas Unit, Department of General Surgery, Royal Liverpool University Hospital, Prescot Street, Liverpool, L7 8XP, UK
| | - A Farooq
- Department of Radiology, Royal Liverpool University Hospital, Prescot Street, Liverpool, L7 8XP, UK
| | - F Bano
- Department of Radiology, Royal Liverpool University Hospital, Prescot Street, Liverpool, L7 8XP, UK
| | - J Kleeff
- Department of Visceral, Vascular and Endocrine Surgery, Martin-Luther-University Halle-Wittenberg, 06120, Halle (Saale), Germany
| | - R Baron
- Pancreas Unit, Department of General Surgery, Royal Liverpool University Hospital, Prescot Street, Liverpool, L7 8XP, UK
| | - M Raraty
- Pancreas Unit, Department of General Surgery, Royal Liverpool University Hospital, Prescot Street, Liverpool, L7 8XP, UK
| | - P Ghaneh
- Pancreas Unit, Department of General Surgery, Royal Liverpool University Hospital, Prescot Street, Liverpool, L7 8XP, UK
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GA, UK
| | - R Sutton
- Pancreas Unit, Department of General Surgery, Royal Liverpool University Hospital, Prescot Street, Liverpool, L7 8XP, UK
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GA, UK
| | - P Whelan
- Pancreas Unit, Department of General Surgery, Royal Liverpool University Hospital, Prescot Street, Liverpool, L7 8XP, UK
| | - F Campbell
- Department of Pathology, Royal Liverpool University Hospital, Prescot Street, Liverpool, L7 8XP, UK
| | - P Healey
- Department of Radiology, Royal Liverpool University Hospital, Prescot Street, Liverpool, L7 8XP, UK
| | - J P Neoptolemos
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GA, UK
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - V S Yip
- Pancreas Unit, Department of General Surgery, Royal Liverpool University Hospital, Prescot Street, Liverpool, L7 8XP, UK.
- Department of Hepatobiliary and Pancreas Surgery, 13C Royal London Hospital, Whitechapel Road, London, E1 1BB, UK.
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Kirshenbaum E, Nelson M, Hehemann M, Farooq A, Bresler L, Gupta G, Bajic P, Delos Santos G. 287 Impact of Post-hospital Syndrome on Penile Prosthesis Outcomes: A Period of Global Health Risk. J Sex Med 2019. [DOI: 10.1016/j.jsxm.2019.01.290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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35
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Nelson M, Kirshenbaum E, Bajic P, Farooq A, Baker M. 087 Characterizing the Priapism Superuser: A Longitudinal, Population-based Study. J Sex Med 2019. [DOI: 10.1016/j.jsxm.2019.01.097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Bajic P, Kirshenbaum E, Doshi C, Nelson M, Hehemann M, Bresler L, Farooq A. 031 “Super-users” of Healthcare: Identifying Drivers of Extreme Costs Following Penile Prosthesis Placement. J Sex Med 2019. [DOI: 10.1016/j.jsxm.2019.01.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Herrera S, Farooq A, Davoudi S, Martinu T, Kumar D, Humar A, Rotstein C, Singer L, Keshavjee S, Husain S. Late Onset Invasive Pulmonary Aspergillosis in Lung Transplant Recipients Treated with a Preemptive/ Targeted Antifungal Therapy Strategy: 4 Year Follow Up. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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38
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Kim KH, Farooq A, Song MY, Jung SC, Jeon KJ, Song J, Ko CH, Jae J, Park YK. Acetaldehyde removal and increased H 2/CO gas yield from biomass gasification over metal-loaded Kraft lignin char catalyst. J Environ Manage 2019; 232:330-335. [PMID: 30496962 DOI: 10.1016/j.jenvman.2018.11.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 10/28/2018] [Accepted: 11/15/2018] [Indexed: 06/09/2023]
Abstract
Acetaldehyde removal tests were performed to compare the catalytic activity of the Kraft lignin char (KC), KOH-treated Kraft lignin char (KKC), and activated carbon (AC) along with their impregnation with Mn in a plasma reactor. The gasification characteristics (syngas content, and H2/CO ratio) of yellow poplar were investigated using nickel catalysts supported on KC, KKC, AC, and γ-Al2O3 in a U-type quartz reactor. KKC and Mn/KKC improved significantly the surface area and contents of O and N functional groups over the raw char. In particular, Mn/KKC showed the highest acetaldehyde-removal efficiency. The catalytic activity of Ni-impregnated KC, KKC, AC, and γ-Al2O3 decreased in the order of Ni/KKC > Ni/AC > Ni/KC > Ni/γ-Al2O3 for the gas yield and Ni/γ-Al2O3 >Ni/KC > Ni/AC >Ni/KKC for the oil yield, respectively. The Ni/KKC provides a more conducive environment for gasification, resulting in larger amounts of syngas (H2 and CO) in the product gases. Moreover, Ni impregnated with char may be the most inexpensive and effective solution for achieving maximum tar reduction and syngas generation.
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Affiliation(s)
- Ki Hoon Kim
- School of Environmental Engineering, University of Seoul, Seoul 02504, South Korea
| | - Abid Farooq
- School of Environmental Engineering, University of Seoul, Seoul 02504, South Korea
| | - Min Young Song
- School of Environmental Engineering, University of Seoul, Seoul 02504, South Korea
| | - Sang-Chul Jung
- Department of Environmental Engineering, Sunchon National University, Suncheon 57922, South Korea
| | - Ki-Joon Jeon
- Department of Environmental Engineering, Inha University, Incheon 22212, South Korea
| | - JiHyeon Song
- Department of Civil and Environmental Engineering, Sejong University, Seoul, 05006, South Korea
| | - Chang Hyun Ko
- School of Chemical Engineering, Chonnam National University, Gwangju, 61186, South Korea
| | - Jungho Jae
- School of Chemical and Biomolecular Engineering, Pusan National University, Busan 46241, South Korea
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, Seoul 02504, South Korea.
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Farooq A, Shafaghat H, Jae J, Jung SC, Park YK. Enhanced stability of bio-oil and diesel fuel emulsion using Span 80 and Tween 60 emulsifiers. J Environ Manage 2019; 231:694-700. [PMID: 30396142 DOI: 10.1016/j.jenvman.2018.10.098] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 10/09/2018] [Accepted: 10/26/2018] [Indexed: 06/08/2023]
Abstract
Bio-oil (biomass pyrolysis oil) has some undesirable properties (e.g., low heating value, high corrosiveness, and high viscosity) that restrain its direct use as a transportation fuel. The emulsification of bio-oil and diesel is an effective and convenient method to use bio-oil in the present transportation fuel infrastructure. The addition of an emulsifying agent (emulsifier or surfactant) to two immiscible liquids of diesel and bio-oil is an important step in emulsification. The hydrophilic-lipophilic balance (HLB) value, according to the chemical structure and characteristics of the emulsifier, is a key parameter for selecting a surfactant. In this study, an ether treatment of raw bio-oil was carried out to separate the ether-soluble fraction of bio-oil from its heavy (dark brown and highly viscous) fraction, and the ether-extracted bio-oil (EEO) was processed further for emulsification into diesel fuel. The effects of the HLB value of the emulsifier and the contents of EEO, diesel, and emulsifier on the stability of the EEO/diesel emulsion were investigated. To optimize the HLB value of the emulsifier, different HLB values (4.3-8.8), which were prepared by mixing different amounts of Span 80 and Tween 60 as surfactants, were used for the EEO and diesel emulsification. A HLB value of 7.3 with diesel, EEO, and emulsifier contents of 90, 5, 5 wt%, and 86, 7.4, 6.6 wt% resulted in EEO/diesel emulsions (without phase separation) stable for 40 and 35 days, respectively. Measurement of the high heating value (HHV) of the emulsified fuels gave a 44.32 and 43.68 MJ/kg values for the EEO to emulsifier mass ratios of 5:5 and 7.4:6.6, respectively. The stability of emulsified EEO and diesel was verified by TGA and FT-IR methods.
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Affiliation(s)
- Abid Farooq
- School of Environmental Engineering, University of Seoul, Seoul 02504, South Korea
| | - Hoda Shafaghat
- School of Environmental Engineering, University of Seoul, Seoul 02504, South Korea
| | - Jungho Jae
- School of Chemical and Biomolecular Engineering, Pusan National University, Busan 46241, South Korea
| | - Sang-Chul Jung
- Department of Environmental Engineering, Sunchon National University, Suncheon 57922, South Korea
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, Seoul 02504, South Korea.
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40
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Sheel ARG, Harrison S, Sarantitis I, Nicholson JA, Hanna T, Grocock C, Raraty M, Ramesh J, Farooq A, Costello E, Jackson R, Chapman M, Smith A, Carter R, Mckay C, Hamady Z, Aithal GP, Mountford R, Ghaneh P, Hammel P, Lerch MM, Halloran C, Pereira SP, Greenhalf W. Identification of Cystic Lesions by Secondary Screening of Familial Pancreatic Cancer (FPC) Kindreds Is Not Associated with the Stratified Risk of Cancer. Am J Gastroenterol 2019; 114:155-164. [PMID: 30353057 DOI: 10.1038/s41395-018-0395-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Intraductal papillary mucinous neoplasms (IPMNs) are associated with risk of pancreatic ductal adenocarcinoma (PDAC). It is unclear if an IPMN in individuals at high risk of PDAC should be considered as a positive screening result or as an incidental finding. Stratified familial pancreatic cancer (FPC) populations were used to determine if IPMN risk is linked to familial risk of PDAC. METHODS This is a cohort study of 321 individuals from 258 kindreds suspected of being FPC and undergoing secondary screening for PDAC through the European Registry of Hereditary Pancreatitis and Familial Pancreatic Cancer (EUROPAC). Computerised tomography, endoscopic ultrasound of the pancreas and magnetic resonance imaging were used. The risk of being a carrier of a dominant mutation predisposing to pancreatic cancer was stratified into three even categories (low, medium and high) based on: Mendelian probability, the number of PDAC cases and the number of people at risk in a kindred. RESULTS There was a median (interquartile range (IQR)) follow-up of 2 (0-5) years and a median (IQR) number of investigations per participant of 4 (2-6). One PDAC, two low-grade neuroendocrine tumours and 41 cystic lesions were identified, including 23 IPMN (22 branch-duct (BD)). The PDAC case occurred in the top 10% of risk, and the BD-IPMN cases were evenly distributed amongst risk categories: low (6/107), medium (10/107) and high (6/107) (P = 0.63). CONCLUSIONS The risk of finding BD-IPMN was independent of genetic predisposition and so they should be managed according to guidelines for incidental finding of IPMN.
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Affiliation(s)
- A R G Sheel
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GA, UK
| | - S Harrison
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GA, UK
| | - I Sarantitis
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GA, UK
| | - J A Nicholson
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GA, UK
| | - T Hanna
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GA, UK
| | - C Grocock
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GA, UK
| | - M Raraty
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GA, UK
| | - J Ramesh
- Department of Gastroenterology, The Royal Liverpool University Hospital, London, UK
| | - A Farooq
- Department of Radiology, The Royal Liverpool University Hospital, London, UK
| | - E Costello
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GA, UK
| | - R Jackson
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GA, UK
| | - M Chapman
- Institute for Liver & Digestive Health, University College London, London, UK
| | - A Smith
- Department of Pancreatico-Biliary Surgery, Leeds Teaching Hospital Trust, Leeds, UK
| | - R Carter
- West of Scotland Pancreatic unit, Glasgow Royal Infirmary, Glasgow, UK
| | - C Mckay
- West of Scotland Pancreatic unit, Glasgow Royal Infirmary, Glasgow, UK
| | - Z Hamady
- Department of Hepatobiliary and Pancreatic Diseases, University Hospital Southampton, Southampton, UK
| | - G P Aithal
- NIHR Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and University of Nottingham, Nottingham, NG7 2UH, UK
| | - R Mountford
- Mersey Regional Molecular Genetics Laboratory, Liverpool Women's Hospital, Liverpool, UK
| | - P Ghaneh
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GA, UK
| | - P Hammel
- Service de Gastroentérologie-Pancréatologie, Pôle des Maladies de l'Appareil Digestif, Hôpital Beaujon, 92118, Clichy Cedex, France
| | - M M Lerch
- Department of Medicine A, University Medicine Greifswald, Sauerbruch-Strasse, 17475, Greifswald, Germany
| | - C Halloran
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GA, UK
| | - S P Pereira
- Institute for Liver & Digestive Health, University College London, London, UK
| | - W Greenhalf
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GA, UK
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Farooq A, Imran M, Iqbal Z, H. Bokhari T, Latif S, Farooq A, Liaqat M, Mitu L. Synthesis, structural and photo-physical studies of transition metal complexes with Mannich bases derived from 2-mercaptobenzimidazole. B CHEM SOC ETHIOPIA 2018. [DOI: 10.4314/bcse.v32i3.7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Harris A, Martin B, Stang K, Hentz C, Farooq A, Baldea K, Flanigan R, Harkenrider M, Solanki A. Impact of Prostate Gland Size ≥60 cc on Physician and Patient-Reported Toxicity after High Dose Rate Prostate Brachytherapy. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Alselwi W, Azam F, Latif M, Osman IH, Taha W, Bawazir K, Farooq A, Bukhari N, Ibnshamsah F. Do Royal Marsden Hospital (RMH) and MD Anderson Cancer Center (MDACC) prognostic scoring systems predict survival in patients with bone sarcoma? Ann Oncol 2018. [DOI: 10.1093/annonc/mdy299.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Tabassam M, Farooq A, Imran M, R. Gillani S, Saqib S, Mehmood Z, Mitu L. Reactivity of (η3-allyl)dicarbonylnitrosyl iron complexes with dimethyl malonate and diisobutyl malonate. B CHEM SOC ETHIOPIA 2017. [DOI: 10.4314/bcse.v31i2.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Korpics M, Hentz C, Martin B, Gupta G, Farooq A, Flanigan R, Small W, Harkenrider M, Solanki A. Comparing Acute Toxicity Profiles for High Dose Rate Prostate Brachytherapy Patients Receiving Two Implants Separated by a One-Week Versus Two-Week Interval. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Chamari K, Cherif A, Ryu J, Fenneni M, Farooq A, Meeusen R, Roelands B. Three-days of Islamic intermittent fasting negatively impact repeated-sprints performance of active young healthy adults. J Sci Med Sport 2017. [DOI: 10.1016/j.jsams.2017.01.196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Vohra RS, Pasquali S, Kirkham AJ, Marriott P, Johnstone M, Spreadborough P, Alderson D, Griffiths EA, Fenwick S, Elmasry M, Nunes Q, Kennedy D, Basit Khan R, Khan MAS, Magee CJ, Jones SM, Mason D, Parappally CP, Mathur P, Saunders M, Jamel S, Ul Haque S, Zafar S, Shiwani MH, Samuel N, Dar F, Jackson A, Lovett B, Dindyal S, Winter H, Fletcher T, Rahman S, Wheatley K, Nieto T, Ayaani S, Youssef H, Nijjar RS, Watkin H, Naumann D, Emeshi S, Sarmah PB, Lee K, Joji N, Heath J, Teasdale RL, Weerasinghe C, Needham PJ, Welbourn H, Forster L, Finch D, Blazeby JM, Robb W, McNair AGK, Hrycaiczuk A, Charalabopoulos A, Kadirkamanathan S, Tang CB, Jayanthi NVG, Noor N, Dobbins B, Cockbain AJ, Nilsen-Nunn A, Siqueira J, Pellen M, Cowley JB, Ho WM, Miu V, White TJ, Hodgkins KA, Kinghorn A, Tutton MG, Al-Abed YA, Menzies D, Ahmad A, Reed J, Khan S, Monk D, Vitone LJ, Murtaza G, Joel A, Brennan S, Shier D, Zhang C, Yoganathan T, Robinson SJ, McCallum IJD, Jones MJ, Elsayed M, Tuck L, Wayman J, Carney K, Aroori S, Hosie KB, Kimble A, Bunting DM, Fawole AS, Basheer M, Dave RV, Sarveswaran J, Jones E, Kendal C, Tilston MP, Gough M, Wallace T, Singh S, Downing J, Mockford KA, Issa E, Shah N, Chauhan N, Wilson TR, Forouzanfar A, Wild JRL, Nofal E, Bunnell C, Madbak K, Rao STV, Devoto L, Siddiqi N, Khawaja Z, Hewes JC, Gould L, Chambers A, Urriza Rodriguez D, Sen G, Robinson S, Carney K, Bartlett F, Rae DM, Stevenson TEJ, Sarvananthan K, Dwerryhouse SJ, Higgs SM, Old OJ, Hardy TJ, Shah R, Hornby ST, Keogh K, Frank L, Al-Akash M, Upchurch EA, Frame RJ, Hughes M, Jelley C, Weaver S, Roy S, Sillo TO, Galanopoulos G, Cuming T, Cunha P, Tayeh S, Kaptanis S, Heshaishi M, Eisawi A, Abayomi M, Ngu WS, Fleming K, Singh Bajwa D, Chitre V, Aryal K, Ferris P, Silva M, Lammy S, Mohamed S, Khawaja A, Hussain A, Ghazanfar MA, Bellini MI, Ebdewi H, Elshaer M, Gravante G, Drake B, Ogedegbe A, Mukherjee D, Arhi C, Giwa Nusrat Iqbal L, Watson NF, Kumar Aggarwal S, Orchard P, Villatoro E, Willson PD, Wa K, Mok J, Woodman T, Deguara J, Garcea G, Babu BI, Dennison AR, Malde D, Lloyd D, Satheesan S, Al-Taan O, Boddy A, Slavin JP, Jones RP, Ballance L, Gerakopoulos S, Jambulingam P, Mansour S, Sakai N, Acharya V, Sadat MM, Karim L, Larkin D, Amin K, Khan A, Law J, Jamdar S, Smith SR, Sampat K, M O'shea K, Manu M, Asprou FM, Malik NS, Chang J, Johnstone M, Lewis M, Roberts GP, Karavadra B, Photi E, Hewes J, Gould L, Chambers A, Rodriguez D, O'Reilly DA, Rate AJ, Sekhar H, Henderson LT, Starmer BZ, Coe PO, Tolofari S, Barrie J, Bashir G, Sloane J, Madanipour S, Halkias C, Trevatt AEJ, Borowski DW, Hornsby J, Courtney MJ, Virupaksha S, Seymour K, Robinson S, Hawkins H, Bawa S, Gallagher PV, Reid A, Wood P, Finch JG, Parmar J, Stirland E, Gardner-Thorpe J, Al-Muhktar A, Peterson M, Majeed A, Bajwa FM, Martin J, Choy A, Tsang A, Pore N, Andrew DR, Al-Khyatt W, Taylor C, Bhandari S, Chambers A, Subramanium D, Toh SKC, Carter NC, Mercer SJ, Knight B, Tate S, Pearce B, Wainwright D, Vijay V, Alagaratnam S, Sinha S, Khan S, El-Hasani SS, Hussain AA, Bhattacharya V, Kansal N, Fasih T, Jackson C, Siddiqui MN, Chishti IA, Fordham IJ, Siddiqui Z, Bausbacher H, Geogloma I, Gurung K, Tsavellas G, Basynat P, Kiran Shrestha A, Basu S, Chhabra Mohan Harilingam A, Rabie M, Akhtar M, Kumar P, Jafferbhoy SF, Hussain N, Raza S, Haque M, Alam I, Aseem R, Patel S, Asad M, Booth MI, Ball WR, Wood CPJ, Pinho-Gomes AC, Kausar A, Rami Obeidallah M, Varghase J, Lodhia J, Bradley D, Rengifo C, Lindsay D, Gopalswamy S, Finlay I, Wardle S, Bullen N, Iftikhar SY, Awan A, Ahmed J, Leeder P, Fusai G, Bond-Smith G, Psica A, Puri Y, Hou D, Noble F, Szentpali K, Broadhurst J, Date R, Hossack MR, Li Goh Y, Turner P, Shetty V, Riera M, Macano CAW, Sukha A, Preston SR, Hoban JR, Puntis DJ, Williams SV, Krysztopik R, Kynaston J, Batt J, Doe M, Goscimski A, Jones GH, Smith SR, Hall C, Carty N, Ahmed J, Panteleimonitis S, Gunasekera RT, Sheel ARG, Lennon H, Hindley C, Reddy M, Kenny R, Elkheir N, McGlone ER, Rajaganeshan R, Hancorn K, Hargreaves A, Prasad R, Longbotham DA, Vijayanand D, Wijetunga I, Ziprin P, Nicolay CR, Yeldham G, Read E, Gossage JA, Rolph RC, Ebied H, Phull M, Khan MA, Popplewell M, Kyriakidis D, Hussain A, Henley N, Packer JR, Derbyshire L, Porter J, Appleton S, Farouk M, Basra M, Jennings NA, Ali S, Kanakala V, Ali H, Lane R, Dickson-Lowe R, Zarsadias P, Mirza D, Puig S, Al Amari K, Vijayan D, Sutcliffe R, Marudanayagam R, Hamady Z, Prasad AR, Patel A, Durkin D, Kaur P, Bowen L, Byrne JP, Pearson KL, Delisle TG, Davies J, Tomlinson MA, Johnpulle MA, Slawinski C, Macdonald A, Nicholson J, Newton K, Mbuvi J, Farooq A, Sidhartha Mothe B, Zafrani Z, Brett D, Francombe J, Spreadborough P, Barnes J, Cheung M, Al-Bahrani AZ, Preziosi G, Urbonas T, Alberts J, Mallik M, Patel K, Segaran A, Doulias T, Sufi PA, Yao C, Pollock S, Manzelli A, Wajed S, Kourkulos M, Pezzuto R, Wadley M, Hamilton E, Jaunoo S, Padwick R, Sayegh M, Newton RC, Hebbar M, Farag SF, Spearman J, Hamdan MF, D'Costa C, Blane C, Giles M, Peter MB, Hirst NA, Hossain T, Pannu A, El-Dhuwaib Y, Morrison TEM, Taylor GW, Thompson RLE, McCune K, Loughlin P, Lawther R, Byrnes CK, Simpson DJ, Mawhinney A, Warren C, McKay D, McIlmunn C, Martin S, MacArtney M, Diamond T, Davey P, Jones C, Clements JM, Digney R, Chan WM, McCain S, Gull S, Janeczko A, Dorrian E, Harris A, Dawson S, Johnston D, McAree B, Ghareeb E, Thomas G, Connelly M, McKenzie S, Cieplucha K, Spence G, Campbell W, Hooks G, Bradley N, Hill ADK, Cassidy JT, Boland M, Burke P, Nally DM, Hill ADK, Khogali E, Shabo W, Iskandar E, McEntee GP, O'Neill MA, Peirce C, Lyons EM, O'Sullivan AW, Thakkar R, Carroll P, Ivanovski I, Balfe P, Lee M, Winter DC, Kelly ME, Hoti E, Maguire D, Karunakaran P, Geoghegan JG, Martin ST, McDermott F, Cross KS, Cooke F, Zeeshan S, Murphy JO, Mealy K, Mohan HM, Nedujchelyn Y, Fahad Ullah M, Ahmed I, Giovinazzo F, Milburn J, Prince S, Brooke E, Buchan J, Khalil AM, Vaughan EM, Ramage MI, Aldridge RC, Gibson S, Nicholson GA, Vass DG, Grant AJ, Holroyd DJ, Jones MA, Sutton CMLR, O'Dwyer P, Nilsson F, Weber B, Williamson TK, Lalla K, Bryant A, Carter CR, Forrest CR, Hunter DI, Nassar AH, Orizu MN, Knight K, Qandeel H, Suttie S, Belding R, McClarey A, Boyd AT, Guthrie GJK, Lim PJ, Luhmann A, Watson AJM, Richards CH, Nicol L, Madurska M, Harrison E, Boyce KM, Roebuck A, Ferguson G, Pati P, Wilson MSJ, Dalgaty F, Fothergill L, Driscoll PJ, Mozolowski KL, Banwell V, Bennett SP, Rogers PN, Skelly BL, Rutherford CL, Mirza AK, Lazim T, Lim HCC, Duke D, Ahmed T, Beasley WD, Wilkinson MD, Maharaj G, Malcolm C, Brown TH, Shingler GM, Mowbray N, Radwan R, Morcous P, Wood S, Kadhim A, Stewart DJ, Baker AL, Tanner N, Shenoy H, Hafiz S, Marchi JA, Singh-Ranger D, Hisham E, Ainley P, O'Neill S, Terrace J, Napetti S, Hopwood B, Rhys T, Downing J, Kanavati O, Coats M, Aleksandrov D, Kallaway C, Yahya S, Weber B, Templeton A, Trotter M, Lo C, Dhillon A, Heywood N, Aawsaj Y, Hamdan A, Reece-Bolton O, McGuigan A, Shahin Y, Ali A, Luther A, Nicholson JA, Rajendran I, Boal M, Ritchie J. Population-based cohort study of variation in the use of emergency cholecystectomy for benign gallbladder diseases. Br J Surg 2016; 103:1716-1726. [PMID: 27748962 DOI: 10.1002/bjs.10288] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 06/21/2016] [Accepted: 07/06/2016] [Indexed: 01/05/2023]
Abstract
Abstract
Background
The aims of this prospective population-based cohort study were to identify the patient and hospital characteristics associated with emergency cholecystectomy, and the influences of these in determining variations between hospitals.
Methods
Data were collected for consecutive patients undergoing cholecystectomy in acute UK and Irish hospitals between 1 March and 1 May 2014. Potential explanatory variables influencing the performance of emergency cholecystectomy were analysed by means of multilevel, multivariable logistic regression modelling using a two-level hierarchical structure with patients (level 1) nested within hospitals (level 2).
Results
Data were collected on 4744 cholecystectomies from 165 hospitals. Increasing age, lower ASA fitness grade, biliary colic, the need for further imaging (magnetic retrograde cholangiopancreatography), endoscopic interventions (endoscopic retrograde cholangiopancreatography) and admission to a non-biliary centre significantly reduced the likelihood of an emergency cholecystectomy being performed. The multilevel model was used to calculate the probability of receiving an emergency cholecystectomy for a woman aged 40 years or over with an ASA grade of I or II and a BMI of at least 25·0 kg/m2, who presented with acute cholecystitis with an ultrasound scan showing a thick-walled gallbladder and a normal common bile duct. The mean predicted probability of receiving an emergency cholecystectomy was 0·52 (95 per cent c.i. 0·45 to 0·57). The predicted probabilities ranged from 0·02 to 0·95 across the 165 hospitals, demonstrating significant variation between hospitals.
Conclusion
Patients with similar characteristics presenting to different hospitals with acute gallbladder pathology do not receive comparable care.
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Affiliation(s)
| | - R S Vohra
- Trent Oesophago-Gastric Unit, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - S Pasquali
- Surgical Oncology Unit, Veneto Institute of Oncology IOV-IRCCS, Padova, Italy
| | - A J Kirkham
- Cancer Research UK Clinical Trials Unit, University of Birmingham, Birmingham, UK
| | - P Marriott
- West Midlands Research Collaborative, Academic Department of Surgery, University of Birmingham, Birmingham, UK
| | - M Johnstone
- West Midlands Research Collaborative, Academic Department of Surgery, University of Birmingham, Birmingham, UK
| | - P Spreadborough
- West Midlands Research Collaborative, Academic Department of Surgery, University of Birmingham, Birmingham, UK
| | - D Alderson
- Academic Department of Surgery, University of Birmingham, Birmingham, UK
| | - E A Griffiths
- Department of Upper Gastrointestinal Surgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - S Fenwick
- Aintree University Hospital NHS Foundation Trust
| | - M Elmasry
- Aintree University Hospital NHS Foundation Trust
| | - Q Nunes
- Aintree University Hospital NHS Foundation Trust
| | - D Kennedy
- Aintree University Hospital NHS Foundation Trust
| | | | | | | | | | - D Mason
- Wirral University Teaching Hospital
| | | | | | | | - S Jamel
- Barnet and Chase Farm Hospital
| | | | - S Zafar
- Barnet and Chase Farm Hospital
| | | | - N Samuel
- Barnsley District General Hospital
| | - F Dar
- Barnsley District General Hospital
| | | | | | | | | | | | | | - K Wheatley
- Sandwell and West Birmingham Hospitals NHS Trust
| | - T Nieto
- Sandwell and West Birmingham Hospitals NHS Trust
| | - S Ayaani
- Sandwell and West Birmingham Hospitals NHS Trust
| | - H Youssef
- Heart of England Foundation NHS Trust
| | | | - H Watkin
- Heart of England Foundation NHS Trust
| | - D Naumann
- Heart of England Foundation NHS Trust
| | - S Emeshi
- Heart of England Foundation NHS Trust
| | | | - K Lee
- Heart of England Foundation NHS Trust
| | - N Joji
- Heart of England Foundation NHS Trust
| | - J Heath
- Blackpool Teaching Hospitals NHS Foundation Trust
| | - R L Teasdale
- Blackpool Teaching Hospitals NHS Foundation Trust
| | | | - P J Needham
- Bradford Teaching Hospitals NHS Foundation Trust
| | - H Welbourn
- Bradford Teaching Hospitals NHS Foundation Trust
| | - L Forster
- Bradford Teaching Hospitals NHS Foundation Trust
| | - D Finch
- Bradford Teaching Hospitals NHS Foundation Trust
| | | | - W Robb
- University Hospitals Bristol NHS Trust
| | | | | | | | | | | | | | | | - B Dobbins
- Calderdale and Huddersfield NHS Trust
| | | | | | | | - M Pellen
- Hull and East Yorkshire NHS Trust
| | | | - W-M Ho
- Hull and East Yorkshire NHS Trust
| | - V Miu
- Hull and East Yorkshire NHS Trust
| | - T J White
- Chesterfield Royal Hospital NHS Foundation Trust
| | - K A Hodgkins
- Chesterfield Royal Hospital NHS Foundation Trust
| | - A Kinghorn
- Chesterfield Royal Hospital NHS Foundation Trust
| | - M G Tutton
- Colchester Hospital University NHS Foundation Trust
| | - Y A Al-Abed
- Colchester Hospital University NHS Foundation Trust
| | - D Menzies
- Colchester Hospital University NHS Foundation Trust
| | - A Ahmad
- Colchester Hospital University NHS Foundation Trust
| | - J Reed
- Colchester Hospital University NHS Foundation Trust
| | - S Khan
- Colchester Hospital University NHS Foundation Trust
| | - D Monk
- Countess of Chester NHS Foundation Trust
| | - L J Vitone
- Countess of Chester NHS Foundation Trust
| | - G Murtaza
- Countess of Chester NHS Foundation Trust
| | - A Joel
- Countess of Chester NHS Foundation Trust
| | | | - D Shier
- Croydon Health Services NHS Trust
| | - C Zhang
- Croydon Health Services NHS Trust
| | | | | | | | - M J Jones
- North Cumbria University Hospitals Trust
| | - M Elsayed
- North Cumbria University Hospitals Trust
| | - L Tuck
- North Cumbria University Hospitals Trust
| | - J Wayman
- North Cumbria University Hospitals Trust
| | - K Carney
- North Cumbria University Hospitals Trust
| | | | | | | | | | | | | | | | | | | | | | - M P Tilston
- Northern Lincolnshire and Goole NHS Foundation Trust
| | - M Gough
- Northern Lincolnshire and Goole NHS Foundation Trust
| | - T Wallace
- Northern Lincolnshire and Goole NHS Foundation Trust
| | - S Singh
- Northern Lincolnshire and Goole NHS Foundation Trust
| | - J Downing
- Northern Lincolnshire and Goole NHS Foundation Trust
| | - K A Mockford
- Northern Lincolnshire and Goole NHS Foundation Trust
| | - E Issa
- Northern Lincolnshire and Goole NHS Foundation Trust
| | - N Shah
- Northern Lincolnshire and Goole NHS Foundation Trust
| | - N Chauhan
- Northern Lincolnshire and Goole NHS Foundation Trust
| | - T R Wilson
- Doncaster and Bassetlaw Hospitals NHS Foundation Trust
| | - A Forouzanfar
- Doncaster and Bassetlaw Hospitals NHS Foundation Trust
| | - J R L Wild
- Doncaster and Bassetlaw Hospitals NHS Foundation Trust
| | - E Nofal
- Doncaster and Bassetlaw Hospitals NHS Foundation Trust
| | - C Bunnell
- Doncaster and Bassetlaw Hospitals NHS Foundation Trust
| | - K Madbak
- Doncaster and Bassetlaw Hospitals NHS Foundation Trust
| | - S T V Rao
- Dorset County Hospital NHS Foundation Trust
| | - L Devoto
- Dorset County Hospital NHS Foundation Trust
| | - N Siddiqi
- Dorset County Hospital NHS Foundation Trust
| | - Z Khawaja
- Dorset County Hospital NHS Foundation Trust
| | | | | | | | | | | | | | | | | | - D M Rae
- Frimley Park Hospital NHS Trust
| | | | | | | | | | - O J Old
- Gloucestershire Hospitals NHS Trust
| | | | - R Shah
- Gloucestershire Hospitals NHS Trust
| | | | - K Keogh
- Gloucestershire Hospitals NHS Trust
| | - L Frank
- Gloucestershire Hospitals NHS Trust
| | - M Al-Akash
- Great Western Hospitals NHS Foundation Trust
| | | | - R J Frame
- Harrogate and District NHS Foundation Trust
| | - M Hughes
- Harrogate and District NHS Foundation Trust
| | - C Jelley
- Harrogate and District NHS Foundation Trust
| | | | | | | | | | - T Cuming
- Homerton University Hospital NHS Trust
| | - P Cunha
- Homerton University Hospital NHS Trust
| | - S Tayeh
- Homerton University Hospital NHS Trust
| | | | | | - A Eisawi
- Tees Hospitals NHS Foundation Trust
| | | | - W S Ngu
- Tees Hospitals NHS Foundation Trust
| | | | | | - V Chitre
- Paget University Hospitals NHS Foundation Trust
| | - K Aryal
- Paget University Hospitals NHS Foundation Trust
| | - P Ferris
- Paget University Hospitals NHS Foundation Trust
| | | | | | | | | | | | | | | | - H Ebdewi
- Kettering General Hospital NHS Foundation Trust
| | - M Elshaer
- Kettering General Hospital NHS Foundation Trust
| | - G Gravante
- Kettering General Hospital NHS Foundation Trust
| | - B Drake
- Kettering General Hospital NHS Foundation Trust
| | - A Ogedegbe
- Barking, Havering and Redbridge University Hospitals NHS Trust
| | - D Mukherjee
- Barking, Havering and Redbridge University Hospitals NHS Trust
| | - C Arhi
- Barking, Havering and Redbridge University Hospitals NHS Trust
| | | | | | | | | | | | | | - K Wa
- Kingston Hospital NHS Foundation Trust
| | - J Mok
- Kingston Hospital NHS Foundation Trust
| | - T Woodman
- Kingston Hospital NHS Foundation Trust
| | - J Deguara
- Kingston Hospital NHS Foundation Trust
| | - G Garcea
- University Hospitals of Leicester NHS Trust
| | - B I Babu
- University Hospitals of Leicester NHS Trust
| | | | - D Malde
- University Hospitals of Leicester NHS Trust
| | - D Lloyd
- University Hospitals of Leicester NHS Trust
| | | | - O Al-Taan
- University Hospitals of Leicester NHS Trust
| | - A Boddy
- University Hospitals of Leicester NHS Trust
| | - J P Slavin
- Leighton Hospital, Mid Cheshire Hospitals NHS Foundation Trust
| | - R P Jones
- Leighton Hospital, Mid Cheshire Hospitals NHS Foundation Trust
| | - L Ballance
- Leighton Hospital, Mid Cheshire Hospitals NHS Foundation Trust
| | - S Gerakopoulos
- Leighton Hospital, Mid Cheshire Hospitals NHS Foundation Trust
| | - P Jambulingam
- Luton and Dunstable University Hospital NHS Foundation Trust
| | - S Mansour
- Luton and Dunstable University Hospital NHS Foundation Trust
| | - N Sakai
- Luton and Dunstable University Hospital NHS Foundation Trust
| | - V Acharya
- Luton and Dunstable University Hospital NHS Foundation Trust
| | - M M Sadat
- Macclesfield District General Hospital
| | - L Karim
- Macclesfield District General Hospital
| | - D Larkin
- Macclesfield District General Hospital
| | - K Amin
- Macclesfield District General Hospital
| | - A Khan
- Central Manchester NHS Foundation Trust
| | - J Law
- Central Manchester NHS Foundation Trust
| | - S Jamdar
- Central Manchester NHS Foundation Trust
| | - S R Smith
- Central Manchester NHS Foundation Trust
| | - K Sampat
- Central Manchester NHS Foundation Trust
| | | | - M Manu
- Royal Wolverhampton Hospitals NHS Trust
| | | | - N S Malik
- Royal Wolverhampton Hospitals NHS Trust
| | - J Chang
- Royal Wolverhampton Hospitals NHS Trust
| | | | - M Lewis
- Norfolk and Norwich University Hospitals NHS Foundation Trust
| | - G P Roberts
- Norfolk and Norwich University Hospitals NHS Foundation Trust
| | - B Karavadra
- Norfolk and Norwich University Hospitals NHS Foundation Trust
| | - E Photi
- Norfolk and Norwich University Hospitals NHS Foundation Trust
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - J Hornsby
- North Tees and Hartlepool NHS Foundation Trust
| | | | | | - K Seymour
- Northumbria Healthcare NHS Foundation Trust
| | - S Robinson
- Northumbria Healthcare NHS Foundation Trust
| | - H Hawkins
- Northumbria Healthcare NHS Foundation Trust
| | - S Bawa
- Northumbria Healthcare NHS Foundation Trust
| | | | - A Reid
- Northumbria Healthcare NHS Foundation Trust
| | - P Wood
- Northumbria Healthcare NHS Foundation Trust
| | - J G Finch
- Northampton General Hospital NHS Trust
| | - J Parmar
- Northampton General Hospital NHS Trust
| | | | | | - A Al-Muhktar
- Sheffield Teaching Hospitals NHS Foundation Trust
| | - M Peterson
- Sheffield Teaching Hospitals NHS Foundation Trust
| | - A Majeed
- Sheffield Teaching Hospitals NHS Foundation Trust
| | | | | | - A Choy
- Peterborough City Hospital
| | | | - N Pore
- United Lincolnshire Hospitals NHS Trust
| | | | | | - C Taylor
- United Lincolnshire Hospitals NHS Trust
| | | | | | | | | | | | | | | | - S Tate
- Portsmouth Hospitals NHS Trust
| | | | | | - V Vijay
- The Princess Alexandra Hospital NHS Trust
| | | | - S Sinha
- The Princess Alexandra Hospital NHS Trust
| | - S Khan
- The Princess Alexandra Hospital NHS Trust
| | | | - A A Hussain
- King's College Hospital NHS Foundation Trust
| | | | - N Kansal
- Gateshead Health NHS Foundation Trust
| | - T Fasih
- Gateshead Health NHS Foundation Trust
| | - C Jackson
- Gateshead Health NHS Foundation Trust
| | | | | | | | | | | | | | - K Gurung
- Queen Elizabeth Hospital NHS Trust
| | - G Tsavellas
- East Kent Hospitals University NHS Foundation Trust
| | - P Basynat
- East Kent Hospitals University NHS Foundation Trust
| | | | - S Basu
- East Kent Hospitals University NHS Foundation Trust
| | | | - M Rabie
- East Kent Hospitals University NHS Foundation Trust
| | - M Akhtar
- East Kent Hospitals University NHS Foundation Trust
| | - P Kumar
- Burton Hospitals NHS Foundation Trust
| | | | - N Hussain
- Burton Hospitals NHS Foundation Trust
| | - S Raza
- Burton Hospitals NHS Foundation Trust
| | - M Haque
- Royal Albert Edward Infirmary, Wigan Wrightington and Leigh NHS Trust
| | - I Alam
- Royal Albert Edward Infirmary, Wigan Wrightington and Leigh NHS Trust
| | - R Aseem
- Royal Albert Edward Infirmary, Wigan Wrightington and Leigh NHS Trust
| | - S Patel
- Royal Albert Edward Infirmary, Wigan Wrightington and Leigh NHS Trust
| | - M Asad
- Royal Albert Edward Infirmary, Wigan Wrightington and Leigh NHS Trust
| | - M I Booth
- Royal Berkshire NHS Foundation Trust
| | - W R Ball
- Royal Berkshire NHS Foundation Trust
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- Royal Bolton Hospital NHS Foundation Trust
| | - J Lodhia
- Royal Bolton Hospital NHS Foundation Trust
| | - D Bradley
- Royal Bolton Hospital NHS Foundation Trust
| | - C Rengifo
- Royal Bolton Hospital NHS Foundation Trust
| | - D Lindsay
- Royal Bolton Hospital NHS Foundation Trust
| | | | | | | | | | | | - A Awan
- Royal Derby NHS Foundation Trust
| | - J Ahmed
- Royal Derby NHS Foundation Trust
| | - P Leeder
- Royal Derby NHS Foundation Trust
| | | | | | | | | | - D Hou
- Hampshire Hospital NHS Foundation Trust
| | - F Noble
- Hampshire Hospital NHS Foundation Trust
| | | | | | - R Date
- Lancashire Teaching Hospitals NHS Foundation Trust
| | - M R Hossack
- Lancashire Teaching Hospitals NHS Foundation Trust
| | - Y Li Goh
- Lancashire Teaching Hospitals NHS Foundation Trust
| | - P Turner
- Lancashire Teaching Hospitals NHS Foundation Trust
| | - V Shetty
- Lancashire Teaching Hospitals NHS Foundation Trust
| | | | | | | | - S R Preston
- Royal Surrey County Hospital NHS Foundation Trust
| | - J R Hoban
- Royal Surrey County Hospital NHS Foundation Trust
| | - D J Puntis
- Royal Surrey County Hospital NHS Foundation Trust
| | - S V Williams
- Royal Surrey County Hospital NHS Foundation Trust
| | | | | | - J Batt
- Royal United Hospital Bath NHS Trust
| | - M Doe
- Royal United Hospital Bath NHS Trust
| | | | | | | | - C Hall
- Salford Royal NHS Foundation Trust
| | - N Carty
- Salisbury Hospital Foundation Trust
| | - J Ahmed
- Salisbury Hospital Foundation Trust
| | | | | | | | - H Lennon
- Southport and Ormskirk Hospital NHS Trust
| | - C Hindley
- Southport and Ormskirk Hospital NHS Trust
| | - M Reddy
- St George's Healthcare NHS Trust
| | - R Kenny
- St George's Healthcare NHS Trust
| | | | | | | | - K Hancorn
- St Helens and Knowsley Teaching Hospitals NHS Trust
| | - A Hargreaves
- St Helens and Knowsley Teaching Hospitals NHS Trust
| | | | | | | | | | - P Ziprin
- Imperial College Healthcare NHS Trust
| | | | - G Yeldham
- Imperial College Healthcare NHS Trust
| | - E Read
- Imperial College Healthcare NHS Trust
| | | | | | | | | | - M A Khan
- Mid Staffordshire NHS Foundation Trust
| | | | | | - A Hussain
- Mid Staffordshire NHS Foundation Trust
| | | | | | | | | | | | | | | | | | - S Ali
- City Hospitals Sunderland NHS Foundation Trust
| | - V Kanakala
- City Hospitals Sunderland NHS Foundation Trust
| | - H Ali
- Tunbridge Wells and Maidstone NHS Trust
| | - R Lane
- Tunbridge Wells and Maidstone NHS Trust
| | | | | | - D Mirza
- University Hospital Birmingham NHS Foundation Trust
| | - S Puig
- University Hospital Birmingham NHS Foundation Trust
| | - K Al Amari
- University Hospital Birmingham NHS Foundation Trust
| | - D Vijayan
- University Hospital Birmingham NHS Foundation Trust
| | - R Sutcliffe
- University Hospital Birmingham NHS Foundation Trust
| | | | - Z Hamady
- University Hospital Coventry and Warwickshire NHS Trust
| | - A R Prasad
- University Hospital Coventry and Warwickshire NHS Trust
| | - A Patel
- University Hospital Coventry and Warwickshire NHS Trust
| | - D Durkin
- University Hospital of North Staffordshire NHS Trust
| | - P Kaur
- University Hospital of North Staffordshire NHS Trust
| | - L Bowen
- University Hospital of North Staffordshire NHS Trust
| | - J P Byrne
- University Hospital Southampton NHS Foundation Trust
| | - K L Pearson
- University Hospital Southampton NHS Foundation Trust
| | - T G Delisle
- University Hospital Southampton NHS Foundation Trust
| | - J Davies
- University Hospital Southampton NHS Foundation Trust
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- University Hospital South Manchester NHS Foundation Trust
| | - J Nicholson
- University Hospital South Manchester NHS Foundation Trust
| | - K Newton
- University Hospital South Manchester NHS Foundation Trust
| | - J Mbuvi
- University Hospital South Manchester NHS Foundation Trust
| | - A Farooq
- Warrington and Halton Hospitals NHS Trust
| | | | - Z Zafrani
- Warrington and Halton Hospitals NHS Trust
| | - D Brett
- Warrington and Halton Hospitals NHS Trust
| | | | | | - J Barnes
- South Warwickshire NHS Foundation Trust
| | - M Cheung
- South Warwickshire NHS Foundation Trust
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - M Wadley
- Worcestershire Acute Hospitals NHS Trust
| | - E Hamilton
- Worcestershire Acute Hospitals NHS Trust
| | - S Jaunoo
- Worcestershire Acute Hospitals NHS Trust
| | - R Padwick
- Worcestershire Acute Hospitals NHS Trust
| | - M Sayegh
- Western Sussex Hospitals NHS Foundation Trust
| | - R C Newton
- Western Sussex Hospitals NHS Foundation Trust
| | - M Hebbar
- Western Sussex Hospitals NHS Foundation Trust
| | - S F Farag
- Western Sussex Hospitals NHS Foundation Trust
| | | | | | | | - C Blane
- Yeovil District Hospital NHS Trust
| | - M Giles
- York Teaching Hospital NHS Foundation Trust
| | - M B Peter
- York Teaching Hospital NHS Foundation Trust
| | - N A Hirst
- York Teaching Hospital NHS Foundation Trust
| | - T Hossain
- York Teaching Hospital NHS Foundation Trust
| | - A Pannu
- York Teaching Hospital NHS Foundation Trust
| | | | | | - G W Taylor
- York Teaching Hospital NHS Foundation Trust
| | | | | | | | | | | | | | | | | | | | | | | | | | - T Diamond
- Belfast City Hospital, Mater Infirmorum Hospital Belfast and Royal Victoria Hospital
| | - P Davey
- Belfast City Hospital, Mater Infirmorum Hospital Belfast and Royal Victoria Hospital
| | - C Jones
- Belfast City Hospital, Mater Infirmorum Hospital Belfast and Royal Victoria Hospital
| | - J M Clements
- Belfast City Hospital, Mater Infirmorum Hospital Belfast and Royal Victoria Hospital
| | - R Digney
- Belfast City Hospital, Mater Infirmorum Hospital Belfast and Royal Victoria Hospital
| | - W M Chan
- Belfast City Hospital, Mater Infirmorum Hospital Belfast and Royal Victoria Hospital
| | - S McCain
- Belfast City Hospital, Mater Infirmorum Hospital Belfast and Royal Victoria Hospital
| | - S Gull
- Belfast City Hospital, Mater Infirmorum Hospital Belfast and Royal Victoria Hospital
| | - A Janeczko
- Belfast City Hospital, Mater Infirmorum Hospital Belfast and Royal Victoria Hospital
| | - E Dorrian
- Belfast City Hospital, Mater Infirmorum Hospital Belfast and Royal Victoria Hospital
| | - A Harris
- Belfast City Hospital, Mater Infirmorum Hospital Belfast and Royal Victoria Hospital
| | - S Dawson
- Belfast City Hospital, Mater Infirmorum Hospital Belfast and Royal Victoria Hospital
| | - D Johnston
- Belfast City Hospital, Mater Infirmorum Hospital Belfast and Royal Victoria Hospital
| | - B McAree
- Belfast City Hospital, Mater Infirmorum Hospital Belfast and Royal Victoria Hospital
| | | | | | | | | | | | | | | | | | | | | | | | | | - P Burke
- University Hospital Limerick
| | | | - A D K Hill
- Louth County Hospital and Our Lady of Lourdes Hospital
| | - E Khogali
- Louth County Hospital and Our Lady of Lourdes Hospital
| | - W Shabo
- Louth County Hospital and Our Lady of Lourdes Hospital
| | - E Iskandar
- Louth County Hospital and Our Lady of Lourdes Hospital
| | | | | | | | | | | | | | | | | | - P Balfe
- St Luke's General Hospital Kilkenny
| | - M Lee
- St Luke's General Hospital Kilkenny
| | - D C Winter
- St Vincent's University and Private Hospitals, Dublin
| | - M E Kelly
- St Vincent's University and Private Hospitals, Dublin
| | - E Hoti
- St Vincent's University and Private Hospitals, Dublin
| | - D Maguire
- St Vincent's University and Private Hospitals, Dublin
| | - P Karunakaran
- St Vincent's University and Private Hospitals, Dublin
| | - J G Geoghegan
- St Vincent's University and Private Hospitals, Dublin
| | - S T Martin
- St Vincent's University and Private Hospitals, Dublin
| | - F McDermott
- St Vincent's University and Private Hospitals, Dublin
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - S Gibson
- Crosshouse Hospital, Ayrshire and Arran
| | | | - D G Vass
- Crosshouse Hospital, Ayrshire and Arran
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - H C C Lim
- Glangwili General and Prince Philip Hospital
| | - D Duke
- Glangwili General and Prince Philip Hospital
| | - T Ahmed
- Glangwili General and Prince Philip Hospital
| | - W D Beasley
- Glangwili General and Prince Philip Hospital
| | | | - G Maharaj
- Glangwili General and Prince Philip Hospital
| | - C Malcolm
- Glangwili General and Prince Philip Hospital
| | | | | | | | - R Radwan
- Morriston and Singleton Hospitals
| | | | - S Wood
- Princess of Wales Hospital
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48
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Bakken A, Targett S, Bere T, Eirale C, Farooq A, Tol JL, Whiteley R, Witvrouw E, Khan KM, Bahr R. Interseason variability of a functional movement test, the 9+ screening battery, in professional male football players. Br J Sports Med 2016; 51:1081-1086. [PMID: 27601450 DOI: 10.1136/bjsports-2016-096570] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/20/2016] [Indexed: 02/02/2023]
Abstract
BACKGROUND The Nine Plus screening battery test (9+) is a functional movement test intended to identify limitations in fundamental movement patterns predisposing athletes to injury. However, the interseason variability is unknown. AIM To examine the variability of the 9+ test between 2 consecutive seasons in professional male football players. METHODS Asymptomatic Qatar Star League players (n=220) completed the 9+ at the beginning of the 2013 and 2014 seasons. Time-loss injuries in training and matches were obtained from the Aspetar Injury and Illness Surveillance Program. No intervention was initiated between test occasions. RESULTS A significant increase in the mean total score of 1.6 points (95% CI 1.0 to 2.2, p<0.001) was found from season 1 (22.2±4.1 (SD)) to season 2 (23.8±3.3). The variability was large, as shown by an intraclass correlation coefficient (ICC) of 0.24 (95% CI 0.11 to 0.36) and a minimal detectable change (MDC) of 8.7 points. Of the 220 players, 136 (61.8%) suffered a time-loss injury between the 2 tests. There was an improvement in mean total scores in the injured (+2.0±0.4 (SE), p<0.001) group but not in the uninjured group (+0.9±0.5, p=0.089). The variability from season 1 to season 2 was large both in the injured (ICC 0.25, 0.09 to 0.40, MDC 8.3) and uninjured (ICC 0.24, 0.02 to 0.43, MDC 9.1) groups. CONCLUSIONS The 9+ demonstrated substantial intraindividual variability in the total score between 2 consecutive seasons, irrespective of injury. A change above 8 points is necessary to represent a real change in the 9+ test between seasons.
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Affiliation(s)
- A Bakken
- Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.,Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway
| | - S Targett
- Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar
| | - T Bere
- Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.,Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway
| | - C Eirale
- Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar
| | - A Farooq
- Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar
| | - J L Tol
- Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.,The Sports Physician Group, Department of Sports Medicine OLVG, Amsterdam, The Netherlands.,Academic Center of Evidence Based Sports Medicine, Academic Medical Center, Amsterdam, The Netherlands
| | - R Whiteley
- Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar
| | - E Witvrouw
- Faculty of Medicine and Health Sciences, Department of Rehabilitation Sciences and Physiotherapy, Ghent University, Ghent, Belgium
| | - K M Khan
- Center for Mobility and Hip Health, University of British Columbia, Vancouver, British Columbia, Canada
| | - R Bahr
- Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.,Oslo Sports Trauma Research Center, Norwegian School of Sport Sciences, Oslo, Norway
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49
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Girard O, Brocherie F, Tomazin K, Farooq A, Morin JB. Changes in running mechanics over 100-m, 200-m and 400-m treadmill sprints. J Biomech 2016; 49:1490-1497. [DOI: 10.1016/j.jbiomech.2016.03.020] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 02/12/2016] [Accepted: 03/13/2016] [Indexed: 11/26/2022]
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50
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Allam H, Al Dosouky M, Abdelaziem S, Hashish MS, Farooq A, El Nagar A. Acute calcular cholangitis in a diverse multi-ethnic population. International Journal of Surgery Open 2016. [DOI: 10.1016/j.ijso.2016.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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