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Wang Q, Khosropanah P, van der Kuur J, de Lange G, Audley MD, Aminaei A, Ilyas S, Ridder ML, van der Linden AJ, Bruijn MP, van der Tak F, Gao JR. Frequency division multiplexing readout of a transition edge sensor bolometer array with microstrip-type electrical bias lines. Rev Sci Instrum 2022; 93:124901. [PMID: 36586892 DOI: 10.1063/5.0108786] [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] [Received: 07/10/2022] [Accepted: 11/26/2022] [Indexed: 06/17/2023]
Abstract
We demonstrate multiplexed readout of 43 transition edge sensor (TES) bolometers operating at 90 mK using a frequency division multiplexing (FDM) readout chain with bias frequencies ranging from 1 to 3.5 MHz and a typical frequency spacing of 32 kHz. We improve the previously reported performance of our FDM system by two important steps. First, we replace the coplanar wires with microstrip wires, which minimize the cross talk from mutual inductance. From the measured electrical cross talk (ECT) map, the ECT of all pixels is carrier leakage dominated. Only five pixels show an ECT level higher than 1%. Second, we reduce the thermal response speed of the TES detectors by a factor of 20 by increasing the heat capacity of the TES, which allows us to bias all TES detectors below 50% in transition without oscillations. We compare the current-voltage curves and noise spectra of the TESs measured in single-pixel mode and multiplexing mode. We also compare the noise equivalent power (NEP) and the saturation power of the bolometers in both modes, where 38 pixels show less than 10% difference in NEP and 5% difference in saturation power when measured in the two different modes. The measured noise spectrum is in good agreement with the simulated noise based on measured parameters from an impedance measurement, confirming that our TES is dominated by phonon noise.
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Affiliation(s)
- Q Wang
- SRON Netherlands Institute for Space Research, Landleven 12, 9747 AD Groningen and Niels Bohrweg 4, 2333 CA Leiden, The Netherlands
| | - P Khosropanah
- SRON Netherlands Institute for Space Research, Landleven 12, 9747 AD Groningen and Niels Bohrweg 4, 2333 CA Leiden, The Netherlands
| | - J van der Kuur
- SRON Netherlands Institute for Space Research, Landleven 12, 9747 AD Groningen and Niels Bohrweg 4, 2333 CA Leiden, The Netherlands
| | - G de Lange
- SRON Netherlands Institute for Space Research, Landleven 12, 9747 AD Groningen and Niels Bohrweg 4, 2333 CA Leiden, The Netherlands
| | - M D Audley
- SRON Netherlands Institute for Space Research, Landleven 12, 9747 AD Groningen and Niels Bohrweg 4, 2333 CA Leiden, The Netherlands
| | - A Aminaei
- SRON Netherlands Institute for Space Research, Landleven 12, 9747 AD Groningen and Niels Bohrweg 4, 2333 CA Leiden, The Netherlands
| | - S Ilyas
- SRON Netherlands Institute for Space Research, Landleven 12, 9747 AD Groningen and Niels Bohrweg 4, 2333 CA Leiden, The Netherlands
| | - M L Ridder
- SRON Netherlands Institute for Space Research, Landleven 12, 9747 AD Groningen and Niels Bohrweg 4, 2333 CA Leiden, The Netherlands
| | - A J van der Linden
- SRON Netherlands Institute for Space Research, Landleven 12, 9747 AD Groningen and Niels Bohrweg 4, 2333 CA Leiden, The Netherlands
| | - M P Bruijn
- SRON Netherlands Institute for Space Research, Landleven 12, 9747 AD Groningen and Niels Bohrweg 4, 2333 CA Leiden, The Netherlands
| | - F van der Tak
- SRON Netherlands Institute for Space Research, Landleven 12, 9747 AD Groningen and Niels Bohrweg 4, 2333 CA Leiden, The Netherlands
| | - J R Gao
- SRON Netherlands Institute for Space Research, Landleven 12, 9747 AD Groningen and Niels Bohrweg 4, 2333 CA Leiden, The Netherlands
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Prabudi MO, Siregar MFG, Nasution IPA, Ilyas S. The Effect of Ascorbic Acid on Interleukin-10 and Tumor Necrosis Factor-α Cytokines in Rattus norvegicus with Endometritis. Open Access Maced J Med Sci 2021. [DOI: 10.3889/oamjms.2021.6946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND: Endometritis is a gynecological disease characterized by inflammation of the endometrial glands and stroma. Inflammatory stimuli or tissue injury induce inflammatory pain through the release of cytokines. Ascorbic acid (AA) is a water-soluble Vitamin that plays a role in inhibiting the production of proinflammatory cytokines and increases the expression of anti-inflammatory cytokines.
AIM: The purpose of this study was to find out the association between administration of AA and inflammatory cytokines in experimental animals Rattus norvegicus with endometritis.
METHODS: The research was conducted using virgin female R. norvegicus laboratory mice weighing 250–300 g and aged 11–12 weeks with an estrus cycle of 5–6 days. Mice with regular oestrous cycles were randomly divided into three groups: group 1 was given 200 L of water orally without Escherichia coli inoculation and represented a negative control. Groups 2 and 3 were inoculated (50 L/rat) E. coli intravaginally, 106 colony-forming unit/mL, Group 2 was not given AA and the other side Group 3 was assigned AA. The interleukin (IL)-10 and tumor necrosis factor (TNF)-α _cytokines examination was carried out by histopathological examination through a biopsy of the endometrial tissue. Hypothesis testing on the data was analyzed by the Kruskal Wallis test using Statistical Package for Social Sciences.
RESULTS: Data from the current study revealed that the highest mean value of IL-10 was found in the negative control group (2.5) and the lowest value in the positive control group (1.3). Regarding TNF-α _the highest mean value (2.8) was found in the treatment group and the lowest mean value (2.1) was found in the treatment group. Using the Kruskal Wallis test, IL-10 and TNF-α _showed insignificant results (p = value 0.304 and 0.145 respectively).
CONCLUSIONS: The administration of AA did not affect the decrease in TNF-α _or the upregulation of IL-10 as anti-inflammatory cytokines.
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Gormley G, Ilyas S, Hiscock R, Simmons S. P.64 Assessing the compliance to an enhanced recovery after surgery for caesarean section program using protocol-determined factors. Int J Obstet Anesth 2021. [DOI: 10.1016/j.ijoa.2021.103062] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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4
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Gormley G, Ilyas S. P.98 Introduction of a ‘Pain Medication Tracker’ to aid post- discharge analgesia compliance as part of an enhanced recovery after surgery for caesarean section program. Int J Obstet Anesth 2021. [DOI: 10.1016/j.ijoa.2021.103096] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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5
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Wang Q, Khosropanah P, van der Kuur J, de Lange G, Audley MD, Aminaei A, Hijmering R, Ridder ML, Ilyas S, van der Linden AJ, Bruijn MP, van der Tak F, Gao JR. Electrical cross talk of a frequency division multiplexing readout for a transition edge sensor bolometer array. Rev Sci Instrum 2021; 92:014710. [PMID: 33514257 DOI: 10.1063/5.0032929] [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] [Received: 10/12/2020] [Accepted: 12/29/2020] [Indexed: 06/12/2023]
Abstract
We have characterized and mapped the electrical cross talk (ECT) of a frequency division multiplexing (FDM) system with a transition edge sensor (TES) bolometer array, which is intended for space applications. By adding a small modulation at 120 Hz to the AC bias voltage of one bolometer and measuring the cross talk response in the current noise spectra of the others simultaneously, we have for the first time mapped the ECT level of 61 pixels with a nominal frequency spacing of 32 kHz in a 61 × 61 matrix and a carrier frequency ranging from 1 MHz to 4 MHz. We find that about 94% of the pixels show an ECT level of less than 0.4%. Only the adjacent pixels reach this level, and the ECT for the rest of the pixels is less than 0.1%. We also observe higher ECT levels, up to 10%, between some of the pixels, which have bundled long, parallel coplanar wires connecting TES bolometers to inductor-capacitor filters. In this case, the high mutual inductances dominate. To mitigate this source of ECT, the coplanar wires should be replaced by microstrip wires in the array. Our study suggests that an FDM system can have a relatively low ECT level, e.g., around 0.4% if the frequency spacing is 30 kHz. Our results successfully demonstrate a low electrical cross talk for a space FDM technology.
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Affiliation(s)
- Q Wang
- SRON Netherlands Institute for Space Research, 9700 AV Groningen, The Netherlands
| | - P Khosropanah
- SRON Netherlands Institute for Space Research, 3584 CA Utrecht, The Netherlands
| | - J van der Kuur
- SRON Netherlands Institute for Space Research, 9700 AV Groningen, The Netherlands
| | - G de Lange
- SRON Netherlands Institute for Space Research, 9700 AV Groningen, The Netherlands
| | - M D Audley
- SRON Netherlands Institute for Space Research, 9700 AV Groningen, The Netherlands
| | - A Aminaei
- SRON Netherlands Institute for Space Research, 3584 CA Utrecht, The Netherlands
| | - R Hijmering
- SRON Netherlands Institute for Space Research, 3584 CA Utrecht, The Netherlands
| | - M L Ridder
- SRON Netherlands Institute for Space Research, 3584 CA Utrecht, The Netherlands
| | - S Ilyas
- SRON Netherlands Institute for Space Research, 3584 CA Utrecht, The Netherlands
| | - A J van der Linden
- SRON Netherlands Institute for Space Research, 3584 CA Utrecht, The Netherlands
| | - M P Bruijn
- SRON Netherlands Institute for Space Research, 3584 CA Utrecht, The Netherlands
| | - F van der Tak
- SRON Netherlands Institute for Space Research, 9700 AV Groningen, The Netherlands
| | - J R Gao
- SRON Netherlands Institute for Space Research, 3584 CA Utrecht, The Netherlands
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Alyas S, Roohi N, Ahmed S, Ashraf S, Ilyas S, Ilyas A. Lower vitamin D and sex hormone binding globulin levels and higher progesterone, cortisol and t-PA levels in early second trimester are associated with higher risk of developing gestational diabetes mellitus. J BIOL REG HOMEOS AG 2020; 34:51. [PMID: 32103657 DOI: 10.23812/20-35-l] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- S Alyas
- Physiology/Endocrinology Laboratory, Department of Zoology, University of the Punjab, Lahore, Punjab, Pakistan
- Institute of Molecular Biology and Biotechnology (IMBB), University of Lahore, Punjab, Pakistan
| | - N Roohi
- Physiology/Endocrinology Laboratory, Department of Zoology, University of the Punjab, Lahore, Punjab, Pakistan
| | - S Ahmed
- King Edward Medical University, Neela Gumbad, Anarkali, Lahore, Punjab, Pakistan
| | - S Ashraf
- Physiology/Endocrinology Laboratory, Department of Zoology, University of the Punjab, Lahore, Punjab, Pakistan
| | - S Ilyas
- Department of Pediatrics, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - A Ilyas
- Bio-nanotechnology and Biomaterials (BNB) Lab
- Department of Electrical and Computer Engineering, New York Institute of Technology, Old Westbury, NY, United States
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Ashraf S, Roohi N, Alyas S, Ilyas S, Ashraf Y. LC-MS/MS analysis reveals placental differential expression of chorionic somatomammotropin hormone/human growth hormone in pregnancies with gestational diabetes mellitus. J BIOL REG HOMEOS AG 2019; 33:1823-1828. [PMID: 31842532 DOI: 10.23812/19-366-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- S Ashraf
- Physiology/Endocrinology Laboratory, Department of Zoology, University of the Punjab, Lahore, Punjab, Pakistan.,Department of Biological Sciences, Purdue University, West Lafayette, IN, USA
| | - N Roohi
- Physiology/Endocrinology Laboratory, Department of Zoology, University of the Punjab, Lahore, Punjab, Pakistan
| | - S Alyas
- Physiology/Endocrinology Laboratory, Department of Zoology, University of the Punjab, Lahore, Punjab, Pakistan.,Institute of Molecular Biology and Biotechnology (IMBB), The University of Lahore, Punjab, Pakistan
| | - S Ilyas
- Physiology/Endocrinology Laboratory, Department of Zoology, University of the Punjab, Lahore, Punjab, Pakistan
| | - Y Ashraf
- Physiology/Endocrinology Laboratory, Department of Zoology, University of the Punjab, Lahore, Punjab, Pakistan
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Dalili D, Ilyas S, Monzon L, Malhotra B, Butler D, Fedele F, Bosio F, Kelly P, Adam A, Gangi A. Challenges of Recruitment to Interventional MSK Oncology in Palliative Care – Focus on MRI Guided High Intensity Focused Ultrasound (MRg-HIFU) for Treating Skeletal Metastasis. Semin Musculoskelet Radiol 2019. [DOI: 10.1055/s-0039-1692582] [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] [Indexed: 10/26/2022]
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Jaber N, Hafiz MAA, Kazmi SNR, Hasan MH, Alsaleem F, Ilyas S, Younis MI. Efficient Excitation of Micro/Nano Resonators and Their Higher Order Modes. Sci Rep 2019; 9:319. [PMID: 30670731 PMCID: PMC6342917 DOI: 10.1038/s41598-018-36482-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Accepted: 11/23/2018] [Indexed: 11/22/2022] Open
Abstract
We demonstrate a simple and flexible technique to efficiently activate micro/nano-electromechanical systems (MEMS/NEMS) resonators at their fundamental and higher order vibration modes. The method is based on the utilization of the amplified voltage across an inductor, L, of an LC tank resonant circuit to actuate the MEMS/NEMS resonator. By matching the electrical and mechanical resonances, significant amplitude amplification is reported across the resonators terminals. We show experimentally amplitude amplification up to twelve times, which is demonstrated to efficiently excite several vibration modes of a microplate MEMS resonator and the fundamental mode of a NEMS resonator.
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Affiliation(s)
- N Jaber
- Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - M A A Hafiz
- Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - S N R Kazmi
- Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - M H Hasan
- Durham School of Architectural Engineering and Construction, University of Nebraska Lincoln, Lincoln, Nebraska, 68182-0816, USA
| | - F Alsaleem
- Durham School of Architectural Engineering and Construction, University of Nebraska Lincoln, Lincoln, Nebraska, 68182-0816, USA
| | - S Ilyas
- Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - M I Younis
- Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
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10
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Withey S, Gariani J, Reddy K, Prezzi D, Kelly-Morland C, Ilyas S, Adam A, Goh V. Corrigendum to “Is there a role for perfusion imaging in assessing treatment response following ablative therapy of small renal masses—A systematic review” [Eur. J. Radiol. Open 5 (2018) 102–107]. Eur J Radiol Open 2019; 6:e1. [PMID: 31886320 PMCID: PMC6921305 DOI: 10.1016/j.ejro.2019.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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11
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Rosen SA, Olson TJP, Peter SD, Ilyas S, Tripathi S. Robotic-assisted subtotal colectomy for synchronous colon cancers in a patient with indeterminate colitis - a video vignette. Colorectal Dis 2018; 20:1153-1154. [PMID: 30238595 DOI: 10.1111/codi.14426] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 09/10/2018] [Indexed: 02/08/2023]
Affiliation(s)
- S A Rosen
- Department of Surgery, Emory University School of Medicine, Atlanta, Georgia, USA
| | - T J P Olson
- Department of Surgery, Emory University School of Medicine, Atlanta, Georgia, USA
| | - S D Peter
- Department of Radiology, Emory University School of Medicine, Atlanta, Georgia, USA
| | - S Ilyas
- Department of Pathology, Emory University School of Medicine, Atlanta, Georgia, USA
| | - S Tripathi
- Department of Surgery, Emory University School of Medicine, Atlanta, Georgia, USA
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12
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Withey SJ, Gariani J, Reddy K, Prezzi D, Kelly-Morland C, Ilyas S, Adam A, Goh V. Is there a role for perfusion imaging in assessing treatment response following ablative therapy of small renal masses-A systematic review. Eur J Radiol Open 2018; 5:102-107. [PMID: 30094296 PMCID: PMC6077124 DOI: 10.1016/j.ejro.2018.07.002] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Accepted: 07/02/2018] [Indexed: 12/01/2022] Open
Abstract
Aims Ablation therapies are an innovative nephron-sparing alternative to radical nephrectomy for early stage renal cancers, although determination of treatment success is challenging. We aimed to undertake a systematic review of the literature to determine whether assessment of tumour perfusion may improve response assessment or alter clinical management when compared to standard imaging. Material and Methods Two radiologists performed independent primary literature searches for perfusion imaging in response assessment following ablative therapies (radiofrequency ablation and cryotherapy) focused on renal tumours. Results 5 of 795 articles were eligible, totaling 110 patients. The study designs were heterogeneous with different imaging techniques, perfusion calculations, reference standard and follow-up periods. All studies found lower perfusion following treatment, with a return of ‘high grade’ perfusion in the 7/110 patients with residual or recurrent tumour. One study found perfusion curves were different between successfully ablated regions and residual tumour. Conclusions Studies were limited by small sample size and heterogeneous methodology. No studies have investigated the impact of perfusion imaging on management. This review highlights the current lack of evidence for perfusion imaging in response assessment following renal ablation, however it suggests that there may be a future role. Further prospective research is required to address this.
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Affiliation(s)
- S J Withey
- Department of Radiology, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom.,Cancer Imaging, Division of Imaging Sciences and Biomedical Engineering, King's College London, United Kingdom
| | - J Gariani
- Cancer Imaging, Division of Imaging Sciences and Biomedical Engineering, King's College London, United Kingdom
| | - K Reddy
- Department of Radiology, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
| | - D Prezzi
- Department of Radiology, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom.,Cancer Imaging, Division of Imaging Sciences and Biomedical Engineering, King's College London, United Kingdom
| | - C Kelly-Morland
- Department of Radiology, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom.,Cancer Imaging, Division of Imaging Sciences and Biomedical Engineering, King's College London, United Kingdom
| | - S Ilyas
- Department of Radiology, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
| | - A Adam
- Department of Radiology, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom.,Cancer Imaging, Division of Imaging Sciences and Biomedical Engineering, King's College London, United Kingdom
| | - V Goh
- Department of Radiology, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom.,Cancer Imaging, Division of Imaging Sciences and Biomedical Engineering, King's College London, United Kingdom
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Twigg M, Ilyas S, Kearns T, Zaki D, Grimes L. The provision of patient-centred care: A qualitative analysis of community pharmacists’ views after consultation skills training. Res Social Adm Pharm 2018. [DOI: 10.1016/j.sapharm.2018.05.027] [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]
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14
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PARTHIPUN A, Ilyas S, Thulasidasan N, Sabharwal T. Prostate artery embolisation: initial experience and outcome for the treatment of benign prostate hyperplasia at a single institution. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.153] [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: 11/29/2022] Open
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15
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Ilyas S, Thulasidasan N, PARTHIPUN A, Sabharwal T. Prostate artery embolization (PAE): the tricks to success. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.543] [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: 10/22/2022] Open
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16
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Ng I, Segal R, Lee KL, Ilyas S, Story D. A prospective audit of difficult airway equipment at University of Melbourne-affiliated hospitals. Anaesth Intensive Care 2015; 43:528. [PMID: 26099768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
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17
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Ilyas S, Shaida N, Thakor A, Winterbottom A, Cousins C. Endovascular aneurysm repair (EVAR) follow-up imaging: the assessment and treatment of common postoperative complications. Clin Radiol 2015; 70:183-96. [DOI: 10.1016/j.crad.2014.09.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2014] [Revised: 09/04/2014] [Accepted: 09/12/2014] [Indexed: 10/24/2022]
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18
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Ilyas S, Salim S. A rare association of acute bacterial endocarditis with Henoch-Schönlein purpura (HSP) in an adult patient. S D Med 2014; 67:493-497. [PMID: 25571618] [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] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Henoch-Schönlein purpura (HSP) is a systemic, small vessel vasculitic disorder that mainly affects joint, skin, gastrointestinal tract and kidneys. It is primarily a disease of children that is typically self-limited, but 10 percent of cases occur in adults where features and outcomes may vary. The underlying pathogenesis of HSP remains unknown. We report a case of HSP that occurred with the onset of acute bacterial endocarditis (ABE) in an otherwise healthy 37-year-old Native American male. The patient presented with fevers, fatigue, abdominal pain and renal failure and was found to have acute left-sided staphylococcal endocarditis. He subsequently developed small bowel perforation and purpuric rash. Initially he was treated with broad spectrum antibiotics and small bowel resection. However, resolution of HSP and the associated signs and symptoms was only achieved after treatment with oral steroids and plasmapheresis.
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Affiliation(s)
- Shahid Ilyas
- Department of Internal Medicine, Sanford USD Medical Center, Sioux Falls, USA
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19
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Ilyas S. Re: Junior Radiologists' Forum (JRF): national trainee survey. A reply. Clin Radiol 2014; 69:1313-4. [PMID: 25300559 DOI: 10.1016/j.crad.2014.09.006] [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: 09/04/2014] [Accepted: 09/05/2014] [Indexed: 11/29/2022]
Affiliation(s)
- S Ilyas
- Addenbrooke's Hospital, Cambridge, UK.
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Ilyas S, Beattie A, Pettet G, Kharay A, Hedayati V, Hameed S, McCleery M, Papadakos N, Chari B. Junior Radiologists' Forum (JRF): National trainee survey. Clin Radiol 2014; 69:952-8. [DOI: 10.1016/j.crad.2014.04.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 04/03/2014] [Accepted: 04/25/2014] [Indexed: 11/25/2022]
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Raccis R, Wortmann L, Ilyas S, Schläfer J, Mettenbörger A, Mathur S. Dipole-induced conductivity enhancement by n-type inclusion in a p-type system: α-Fe₂O₃-PEDOT:PSS nanocomposites. Phys Chem Chem Phys 2014; 16:15597-607. [PMID: 24955728 DOI: 10.1039/c4cp01093k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hematite (α-Fe2O3) nanoparticles of two different shapes but of same size (ca. 40 nm) were dispersed in PEDOT:PSS matrices in various concentration ranges (0-7 wt%) to study the consequent changes in conductivity in the dark and under solar illumination conditions. Within a distinct range of concentration, a distinct increase in the conductivity was observed for both spherical and cubical particle population. We ascribed this effect to the generalized Poole-Frenkel theory of conduction in conjunction with the basic depletion width properties of heterojunctions and electrostatic dipole moments, and verified our assumptions through data fitting. A difference in conductivity between sphere- and cube-based α-Fe2O3-PEDOT:PSS nanocomposites was also observed and ascribed to the electrostatic edge effect on the nanoparticles. The dispersion of α-Fe2O3 nanocrystals was confirmed by high-resolution electron microscopy, whereas the electrical properties and modulations thereof were followed by recording current-voltage characteristics.
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Affiliation(s)
- R Raccis
- Institute for Inorganic Chemistry, University of Cologne, Greinstrasse 6, 50939 Cologne, Germany.
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Ilyas S, Symons J, Bradley WPL, Segal R, Taylor H, Lee K, Balkin M, Bain C, Ng I. A prospective randomised controlled trial comparing tracheal intubation plus manual in-line stabilisation of the cervical spine using the Macintosh laryngoscope vs the McGrath®Series 5 videolaryngoscope. Anaesthesia 2014; 69:1345-50. [DOI: 10.1111/anae.12804] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/13/2014] [Indexed: 12/23/2022]
Affiliation(s)
- S. Ilyas
- Department of Anaesthesia and Pain Management; Royal Melbourne Hospital and University of Melbourne; Melbourne Victoria Australia
| | - J. Symons
- Department of Anaesthesia and Perioperative Medicine; The Alfred and Monash University; Melbourne Victoria Australia
| | - W. P. L. Bradley
- Department of Anaesthesia and Perioperative Medicine; The Alfred and Monash University; Melbourne Victoria Australia
| | - R. Segal
- Department of Anaesthesia and Pain Management; Royal Melbourne Hospital and University of Melbourne; Melbourne Victoria Australia
| | - H. Taylor
- Department of Anaesthesia and Pain Management; Royal Melbourne Hospital and University of Melbourne; Melbourne Victoria Australia
| | - K. Lee
- Department of Anaesthesia and Pain Management; Royal Melbourne Hospital and University of Melbourne; Melbourne Victoria Australia
| | - M. Balkin
- Department of Anaesthesia and Perioperative Medicine; The Alfred and Monash University; Melbourne Victoria Australia
| | - C. Bain
- Department of Anaesthesia and Perioperative Medicine; The Alfred and Monash University; Melbourne Victoria Australia
| | - I. Ng
- Department of Anaesthesia and Pain Management; Royal Melbourne Hospital and University of Melbourne; Melbourne Victoria Australia
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Anwar A, van der Zouwen PS, Ilyas S, van der Wolf JM. Bacterial Canker (Clavibacter michiganensis subsp. michiganensis) of Tomato in Commercial Seed Produced in Indonesia. Plant Dis 2004; 88:680. [PMID: 30812593 DOI: 10.1094/pdis.2004.88.6.680a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In 2002, Clavibacter michiganensis subsp. michiganensis (Smith) Davis, the causal organism of bacterial canker of tomato (Lycopersicon esculentum), was isolated from two of six commercial asymptomatic tomato seed lots produced on Java in Indonesia. C. michiganensis subsp. michiganensis has not been reported in Indonesia previously. Methods based on the protocol of the International Seed Health Initiative were used to extract and identify the presence of C. michiganensis subsp. michiganensis in tomato seed. C. michiganensis subsp. michiganensis was isolated with dilution plating on the semiselective media D2ANX and mSCM. The identity of the colonies was confirmed by immunofluorescence microscopy, polymerase chain reaction (2), fatty methyl ester analysis, enzyme-linked immunosorbent assay based on monoclonal antibody 103 (1), and a pathogenicity test in which three replicate tomato plants were stem inoculated with 108 cells ml-1. Within 2 weeks, stripes on stems developed that split and exposed reddish brown cavities (stem cankers). The presence of C. michiganensis subsp. michiganensis poses a direct threat on tomato production, which is one of five economically most important vegetable crops in Indonesia. References: (1) A. Alvarez et al. Phytopathology 83:1405, 1993. (2) M. S. Santos et al. Seed Sci. Technol. 25:581, 1997.
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Affiliation(s)
- A Anwar
- Institut Pertanian Bogor, Jl, Raya Pajajaran, Bogor, Indonesia
| | - P S van der Zouwen
- Plant Research International, P.O. Box 16, 6700 AA Wageningen, the Netherlands
| | - S Ilyas
- Institut Pertanian Bogor, Jl, Raya Pajajaran, Bogor, Indonesia
| | - J M van der Wolf
- Plant Research International, P.O. Box 16, 6700 AA Wageningen, the Netherlands
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24
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Abstract
A small group of patients with complex head and neck cancer present with problems of wound healing following radiotherapy and reconstructive surgery. Provision of skin cover to the neck in these cases is often required and presents a challenge to the reconstructive surgeon. We present the use of a pedicled scalp flap based on the occipital artery for such defects. This flap is an axial patterned scalp flap incorporating hair-bearing skin. It may be up to 15 cm wide and can reach beyond the midline of the chin. The anatomy of the flap is described and its use illustrated in three cases. This flap is a useful addition to the options for reconstruction of neck defects in patients with head and neck cancer.
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Affiliation(s)
- D C Floyd
- Department of Plastic and Reconstructive Surgery, Royal Free Hospital, Pond Street, NW3 2QG, London, UK
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25
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Khan AA, Ilyas S, Ptasznik W. Integrating low water potential seed hydration with other treatments to improve cold tolerance. Ann Bot 1995; 75:13-9. [PMID: 21247908 PMCID: PMC3023659 DOI: 10.1016/s0305-7364(05)80004-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/1993] [Accepted: 07/28/1994] [Indexed: 05/23/2023]
Abstract
Matriconditioning improved the performance of pepper, tomato, sweet corn, snap bean, table beet, sugar beet and watermelon seeds in early field plantings at suboptimal temperatures (averaged over 10 d after planting) ranging from 12 to 18 °C. Reduction in the time to 50% (T(50)) emergence in conditioned seeds ranged from 0·6 d in watermelon to 3·3 d in pepper and improvement in emergence from 10% in sugar beet to 30% in table beet. Further improvement in emergence occurred by inclusion of pesticides and/or gibberellin during conditioning. A 4 d conditioning of pepper at 25 °C was superior to 7 d conditioning at 15 °C in seeds germinated at 15 °C on filter paper, but 15 °C conditioning was superior in improving percentage emergence in early field plantings. Tomato seeds conditioned at 15 or 25 °C performed equally well in the field. A 2 d conditioning was superior to 1 d conditioning in improving the performance of supersweet sweet corn cultivars grown in a growth chamber at 10/20 °C. The water uptake rate in the presence of Micro-Cel E during matriconditioning of sweet corn seeds was slower than when the seeds were exposed to the same amount of water in absence of the carrier. Electrolyte leakage was greater in supersweet 'Challenger' sweet corn seeds carrying the sh(2) gene compared to the sugary type sweet corn 'More', and in both cases matriconditioning reduced the leakage. Lettuce seeds matriconditioned for 24 h had higher 1-aminocyclopropane-l-carboxylic acid (ACC) content, developed greater ACC oxidase activity and performed better at 10 °C (germinated earlier and had higher percentage germination) than the untreated seeds. Matriconditioning appears to bring about beneficial physical, physiological and biochemical changes that seemingly improve embryo growth potential and tolerance to low temperatures.
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Affiliation(s)
- A A Khan
- Department of Horticultural Sciences, New York State Agricultural Experiment Station, Cornell University, Geneva, NY 14456, USA
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Abstract
This paper reports our experience of the use of polythene sheet as a temporary dressing for excised wounds. A prospective randomised double-blind trial was conducted to see whether or not polythene dressing was less painful to remove than our traditional dressing of Jelonet. Polythene was found to be less painful (p less than 0.01). Other advantages of the use of polythene are presented.
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Affiliation(s)
- V Lees
- Department of Plastic Surgery, Frenchay Hospital, Bristol
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