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Babu A, Devi Rajeswari V, Ganesh V, Das S, Dhanasekaran S, Usha Rani G, Ramanathan G. Gut Microbiome and Polycystic Ovary Syndrome: Interplay of Associated Microbial-Metabolite Pathways and Therapeutic Strategies. Reprod Sci 2024; 31:1508-1520. [PMID: 38228976 DOI: 10.1007/s43032-023-01450-2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 12/28/2023] [Indexed: 01/18/2024]
Abstract
Polycystic ovary syndrome (PCOS) is a multifaceted disease with an intricate etiology affecting reproductive-aged women. Despite attempts to unravel the pathophysiology, the molecular mechanism of PCOS remains unknown. There are no effective or suitable therapeutic strategies available to ameliorate PCOS; however, the symptoms can be managed. In recent years, a strong association has been found between the gut microbiome and PCOS, leading to the formulation of novel ideas on the genesis and pathological processes of PCOS. Further, gut microbiome dysbiosis involving microbial metabolites may trigger PCOS symptoms via many mechanistic pathways including those associated with carbohydrates, short-chain fatty acids, lipopolysaccharides, bile acids, and gut-brain axis. We present the mechanistic pathways of PCOS-related microbial metabolites and therapeutic opportunities available to treat PCOS, such as prebiotics, probiotics, and fecal microbiota therapy. In addition, the current review highlights the emerging treatment strategies available to alleviate the symptoms of PCOS.
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Affiliation(s)
- Achsha Babu
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, 632014, India
| | - V Devi Rajeswari
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, 632014, India
| | - V Ganesh
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, 632014, India
| | - Soumik Das
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, 632014, India
| | - Sivaraman Dhanasekaran
- Pandit Deendayal Energy University, Knowledge Corridor, Raisan Village, PDPU Road, Gandhinagar, Gujarat, 382426, India
| | - G Usha Rani
- Department of Obstetrics And Gynecology, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
| | - Gnanasambandan Ramanathan
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, 632014, India.
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Rajkumar K, Walia BS, Viswambaran M, Ganesh V, Padmavati. Clinical and CT Scan Evaluation of Outcomes of Modified SARPE Using a Bone-Borne Hyrax Appliance in Unilateral Posterior Crossbite. J Maxillofac Oral Surg 2023; 22:900-907. [PMID: 38105837 PMCID: PMC10719231 DOI: 10.1007/s12663-022-01756-9] [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] [Received: 05/24/2021] [Accepted: 06/12/2022] [Indexed: 10/17/2022] Open
Abstract
Objective The objective of this study was to evaluate, using clinical and computed tomography, outcomes of unilateral SARPE with a bone-borne hyrax appliance in case of unilateral crossbite and to assess the correlations between hyrax appliance opening and post-SARPE skeletal changes. Materials and Methods Two patients of unilateral crossbite underwent Unilateral SARPE and post-surgical expansion of maxilla using a bone-borne hyrax appliance. Computed tomography was used to make comparative linear and angular measurements of the anterior, intermediate, and posterior portions of the maxilla. The correlation between maxillary expansion and appliance opening was also investigated. Results Significant overall expansion was observed with maximum expansion in the anterior and inferior portions of the maxilla. The degree of appliance opening was significantly greater than that of the skeletal expansion. Comparative CAD measurements showed maximum increase in interdental width at the second premolar level. Conclusion The transverse expansion of the maxilla obtained with a bone-borne hyrax is less than uniform. The lack of linear correlation between appliance opening and skeletal expansion is attributable to multiple factors, including those related to the device, the surgical technique, and the craniofacial deformity itself.
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Affiliation(s)
- K. Rajkumar
- Oral and Maxillofacial Surgery, Air Force Institute of Dental Sciences, Agram Post, Bangalore, 560007 India
| | - B. S. Walia
- Orthodontics & Dentofacial Orthopaedics, Air Force Institute of Dental Sciences, Agram Post, Bangalore, 560007 India
| | - M. Viswambaran
- Air Force Institute of Dental Sciences, Agram Post, Bangalore, 560007 India
| | - V. Ganesh
- Fracktal Works Pvt Ltd, Bangalore, India
| | - Padmavati
- Sree Balaji Dental College and Hospital, Chennai, India
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Ganesh V, Ravi Kumar B, AlAbdulaal TH, Yahia IS, Abdel-wahab MS, Ade R, Hussien MSA, Keshway M. Electrocatalytic Degradation of Rhodamine B Using Li-Doped ZnO Nanoparticles: Novel Approach. Materials (Basel) 2023; 16:1177. [PMID: 36770186 PMCID: PMC9920269 DOI: 10.3390/ma16031177] [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] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/08/2023] [Accepted: 01/11/2023] [Indexed: 06/18/2023]
Abstract
In this paper, we discuss the preparation of Li-doped ZnO nanostructures through combustion and report on their structural, morphological, optical, and electrocatalysis properties. X-ray diffraction analyses show that the samples have a structure crystallized into the usual hexagonal wurtzite ZnO structure according to the P63mc space group. The scanning electron microscope images conceal all samples' nanosphere bundles and aggregates. The reflectance spectra analysis showed that the direct bandgap values varied from 3.273 eV (for pure ZnO, i.e., ZnL1) to 3.256 eV (for high Li-doped ZnO). The measured capacitance concerning frequency has estimated the variation of dielectric constant, dielectric loss, and AC conductivity against AC electric field frequency. The dielectric constant variations and AC conductivity are analyzed and discussed by well-known models such as Koop's phenomenological theory and Jonscher's law. The Raman spectra have been recorded and examined for the prepared samples. Rhodamine B was electro-catalytically degraded in all prepared samples, with the fastest time for ZnL5 being 3 min.
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Affiliation(s)
- Vanga Ganesh
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 62529, Saudi Arabia
| | | | - Thekrayat. H. AlAbdulaal
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 62529, Saudi Arabia
| | - Ibrahim. S. Yahia
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 62529, Saudi Arabia
- Nanoscience Laboratory for Environmental and Bio-Medical Applications (NLEBA), Metallurgical Lab.1., Department of Physics, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
| | - Mohamed Sh. Abdel-wahab
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni–Suef University, Beni–Suef 62511, Egypt
| | - Ramesh Ade
- Department of Physics, Koneru Lakshmaiah Education Foundation, R V S Nagar, Aziz Nagar (P.O.), Moinabad Road, Hyderabad 500075, India
| | - Mai S. A. Hussien
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt
| | - Mohamed Keshway
- Egyptian Petroleum Research Institute, 1 Ahmed El-Zomor Street, Nasr City 11727, Egypt
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Kaloria N, Singh A, Soni SL, Ganesh V, Naik N, Rajnikant K. Arterial cannulation guided by direct waveform assessment: a novel technique. Anaesth Rep 2023; 11:e12207. [PMID: 36632351 PMCID: PMC9827103 DOI: 10.1002/anr3.12207] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/18/2022] [Indexed: 01/11/2023] Open
Affiliation(s)
- N. Kaloria
- Department of Anaesthesia and Intensive CarePostgraduate Institute of Medical Education and ResearchChandigarhIndia
| | - A. Singh
- Department of Anaesthesia and Intensive CarePostgraduate Institute of Medical Education and ResearchChandigarhIndia
| | - S. L. Soni
- Department of Anaesthesia and Intensive CarePostgraduate Institute of Medical Education and ResearchChandigarhIndia
| | - V. Ganesh
- Department of Anaesthesia and Intensive CarePostgraduate Institute of Medical Education and ResearchChandigarhIndia
| | - N. Naik
- Department of Anaesthesia and Intensive CarePostgraduate Institute of Medical Education and ResearchChandigarhIndia
| | - K. Rajnikant
- Department of Anaesthesia and Intensive CarePostgraduate Institute of Medical Education and ResearchChandigarhIndia
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Aswin P, Sreenavya A, Venkatesha NJ, Ganesh V, Balamurugan S, Sakthivel A. Hydrodeoxygenation of Anisole by Using a Ruthenium‐Containing Nickel‐Iron Hydrotalcite‐Based Catalyst. ChemistrySelect 2022. [DOI: 10.1002/slct.202202523] [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: 11/25/2022]
Affiliation(s)
- P. Aswin
- Department of Chemistry, Inorganic Materials & Heterogeneous Catalysis Laboratory Department of Chemistry School of Physical Sciences Central University of Kerala, Sabarmati Building Thejaswini Hills, Periye P.O. Kasaragod 671320 Kerala India
| | - A. Sreenavya
- Department of Chemistry, Inorganic Materials & Heterogeneous Catalysis Laboratory Department of Chemistry School of Physical Sciences Central University of Kerala, Sabarmati Building Thejaswini Hills, Periye P.O. Kasaragod 671320 Kerala India
| | - N. J. Venkatesha
- Post Graduate Department of Chemistry Visveswarapura College of Science Bangalore Institute of Technology K.R. Road, V.V.Pura Bengaluru 560004 India
| | - V. Ganesh
- Electrodics and Electrocatalysis (EEC) Division, CSIR – Central Electrochemical Research Institute (CSIR–CECRI) Karaikudi 630003 Tamilnadu India
| | - S. Balamurugan
- Advanced Nanomaterials Research Laboratory Department of Nanotechnology Noorul Islam Centre for Higher Education Thuckalay, Kumaracoil 629 180 India
| | - A. Sakthivel
- Department of Chemistry, Inorganic Materials & Heterogeneous Catalysis Laboratory Department of Chemistry School of Physical Sciences Central University of Kerala, Sabarmati Building Thejaswini Hills, Periye P.O. Kasaragod 671320 Kerala India
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Bhavisha M, Aswani S, Sreenavya A, Neethu PP, Archana IG, Balamurugan S, Ganesh V, Sakthivel A. Molybdenum Incorporated Strontium‐Iron and Strontium‐Cobalt (SrBMoO3‐δ; B = Fe & Co) Perovskites: Preparation and Their Application on Oxidation of Iso‐Eugenol into Vanillin. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200590] [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: 11/24/2022]
Affiliation(s)
- M. Bhavisha
- Central University of Kerala Department of Chemistry INDIA
| | - S. Aswani
- Central University of Kerala Department of Chemistry INDIA
| | - A. Sreenavya
- Central University of Kerala Department of Chemistry INDIA
| | - P. P. Neethu
- Central University of Kerala Department of Chemistry INDIA
| | - I. G. Archana
- Central University of Kerala Department of Chemistry INDIA
| | - S. Balamurugan
- Noorul Islam College of Engineering: Noorul Islam Centre For Higher Education Department of Nanotechnology INDIA
| | - V. Ganesh
- CSIR-Central Electrochemical Research Institute: Central Electrochemical Research Institute CSIR Electrodics and Electrocatalysis (EEC) Division INDIA
| | - Ayyamperumal Sakthivel
- Central University of Kerala Department of Chemistry Riverside Transit CampusPadenekkad 617316 Kasaragod INDIA
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Ganesh V, AlAbdulaal TH, AlShadidi M, Hussien MSA, Bouzidi A, Algarni H, Zahran HY, Abdel-wahab MS, Mohammed MI, Yahia IS, Narapureddy BR. Enhancement in the Structural, Electrical, Optical, and Photocatalytic Properties of La 2O 3-Doped ZnO Nanostructures. Materials (Basel) 2022; 15:6866. [PMID: 36234207 PMCID: PMC9572095 DOI: 10.3390/ma15196866] [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] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 09/05/2022] [Accepted: 09/19/2022] [Indexed: 06/16/2023]
Abstract
A lanthanum oxide (La2O3)-ZnO nanostructured material was synthesized in the proposed study with different La2O3 concentrations, 0.001 g to 5 g (named So to S7), using the combustion method. X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transformation infrared spectroscopy (FT-IR) were utilized for investigating the structure, morphology, and spectral studies of the La2O3- ZnO nanomaterials, respectively. The results obtained from previous techniques support ZnO's growth from crystalline to nanoparticles' fine structure by changing the concentrations of lanthanum oxide (La2O3) dopants in the host matrix. The percentage of ZnO doped with La- influences the ZnO photocatalytic activity. SEM analysis confirmed the grain size ranged between 81 and 138 nm. Furthermore, UV-Vis diffuse reflectance spectroscopy was performed to verify the effects of La2O3 dopants on the linear optical properties of the nano-composite oxides. There was a variation in the energy bandgaps of La2O3-ZnO nanocomposites, increasing the weight concentrations of lanthanum dopants. The AC electrical conductivity, dielectric properties, and current-voltage properties support the enactment of the electrical characteristics of the ZnO nanoparticles by adding La2O3. All the samples under investigation were used for photodegradation with Rhodamine B (RhB) and Methylene Blue (MB). In less than 30 min of visible light irradiation, S4 (0.5 g) La2O3-ZnO reached 99% of RhB and MB degradation activity. This study showed the best photocatalytic effect for RhB and MB degradation of 0.13 and 0.11 min-1 by 0.5 g La2O3-ZnO. Recycling was performed five times for the nanocatalysts that displayed up to 98 percent catalytic efficiency for RhB and MB degradation in 30 min. The prepared La2O3-ZnO nanostructured composites are considered novel candidates for various applications in biomedical and photocatalytic studies.
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Affiliation(s)
- Vanga Ganesh
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
| | - Thekrayat H. AlAbdulaal
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
| | - Manal AlShadidi
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
| | - Mai S. A. Hussien
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt
- Nanoscience Laboratory for Environmental and Bio-Medical Applications (NLEBA), Semiconductor Lab., Metallurgical Lab.1, Department of Physics, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt
| | - Abdelfatteh Bouzidi
- Research Unit, Physics of Insulating and Semi-Insulating Materials, Faculty of Sciences, University of Sfax, P.O. Box 1171, Sfax 3000, Tunisia
- Preparatory Year Program, Shaqra University, Al-Quwayiyah Branch, Shaqra 19248, Saudi Arabia
| | - Hamed Algarni
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
| | - Heba Y. Zahran
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
- Nanoscience Laboratory for Environmental and Bio-Medical Applications (NLEBA), Semiconductor Lab., Metallurgical Lab.1, Department of Physics, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt
| | - Mohamed Sh. Abdel-wahab
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni Suef 62511, Egypt
| | - Mervat I. Mohammed
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt
| | - Ibrahim S. Yahia
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
- Nanoscience Laboratory for Environmental and Bio-Medical Applications (NLEBA), Semiconductor Lab., Metallurgical Lab.1, Department of Physics, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt
| | - Bayapa Reddy Narapureddy
- Department of Public Health, College of Applied Medical Sciences, King Khalid University, Asir Region, P.O. Box 61421, Abha 61413, Saudi Arabia
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Lee DJ, Mohan Kumar G, Ganesh V, Jeon HC, Kim DY, Kang TW, Ilanchezhiyan P. Novel Nanoarchitectured Cu 2Te as a Photocathodes for Photoelectrochemical Water Splitting Applications. Nanomaterials (Basel) 2022; 12:3192. [PMID: 36144977 PMCID: PMC9506189 DOI: 10.3390/nano12183192] [Citation(s) in RCA: 1] [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] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 09/08/2022] [Accepted: 09/08/2022] [Indexed: 06/16/2023]
Abstract
Designing photocathodes with nanostructures has been considered a promising way to improve the photoelectrochemical (PEC) water splitting activity. Cu2Te is one of the promising semiconducting materials for photoelectrochemical water splitting, the performance of Cu2Te photocathodes remains poor. In this work, we report the preparation of Cu2Te nanorods (NRs) and vertical nanosheets (NSs) assembled film on Cu foil through a vapor phase epitaxy (VPE) technique. The obtained nano architectures as photocathodes toward photoelectrochemical (PEC) performance was tested afterwards for the first time. Optimized Cu2Te NRs and NSs photocathodes showed significant photocurrent density up to 0.53 mA cm-2 and excellent stability under illumination. Electrochemical impedance spectroscopy and Mott-Schottky analysis were used to analyze in more detail the performance of Cu2Te NRs and NSs photocathodes. From these analyses, we propose that Cu2Te NRs and NSs photocathodes are potential candidate materials for use in solar water splitting.
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Affiliation(s)
- Dong Jin Lee
- Quantum-Functional Semiconductor Research Center (QSRC), Institute of Future Technology, Dongguk University, Seoul 04623, Korea
| | - G. Mohan Kumar
- Quantum-Functional Semiconductor Research Center (QSRC), Institute of Future Technology, Dongguk University, Seoul 04623, Korea
| | - V. Ganesh
- Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, India
| | - Hee Chang Jeon
- Quantum-Functional Semiconductor Research Center (QSRC), Institute of Future Technology, Dongguk University, Seoul 04623, Korea
| | - Deuk Young Kim
- Quantum-Functional Semiconductor Research Center (QSRC), Institute of Future Technology, Dongguk University, Seoul 04623, Korea
- Division of Physics and Semiconductor Science, Dongguk University, Seoul 04623, Korea
| | - Tae Won Kang
- Quantum-Functional Semiconductor Research Center (QSRC), Institute of Future Technology, Dongguk University, Seoul 04623, Korea
| | - P. Ilanchezhiyan
- Quantum-Functional Semiconductor Research Center (QSRC), Institute of Future Technology, Dongguk University, Seoul 04623, Korea
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Ganesh V, Yahia IS, Chidhambaram N. Facile Synthesis of ZnO:Sb/g-C3N4 Composite Materials for Photocatalysis Applications. J CLUST SCI 2022. [DOI: 10.1007/s10876-022-02336-0] [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]
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Arulanantham AMS, Gunavathy KV, Antony M, Sundaramurthy N, Stephy MM, Mohanraj P, Ganesh V. Tuning the magnetic properties of neodymium (Nd)-doped cobalt ferrite thin films through nebulizer spray technique. Chem Pap 2022. [DOI: 10.1007/s11696-022-02319-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ganesh V, Sahini K, Basuri PP, Nalini C. Review of analytical and bioanalytical techniques for the determination of first-line anticytomegalovirus drugs. Chinese Journal of Analytical Chemistry 2022. [DOI: 10.1016/j.cjac.2022.100123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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AlAbdulaal TH, Ganesh V, AlShadidi M, Hussien MSA, Bouzidi A, Algarni H, Zahran HY, Abdel-wahab MS, Yahia IS, Nasr S. The Auto-Combustion Method Synthesized Eu2O3-ZnO Nanostructured Composites for Electronic and Photocatalytic Applications. Materials 2022; 15:ma15093257. [PMID: 35591591 PMCID: PMC9101604 DOI: 10.3390/ma15093257] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 04/10/2022] [Accepted: 04/25/2022] [Indexed: 11/16/2022]
Abstract
An efficient and environmentally friendly combustion technique was employed to produce ZnO nanopowders with different Eu concentrations (from 0.001 g to 5 g). The structural morphology of the Eu2O3-ZnO nanocomposites was examined using XRD, SEM, and infrared spectroscopy (FT-IR). In addition, UV-Vis diffuse reflectance spectroscopy was also used to investigate the effects of europium (Eu) dopant on the optical behaviors and energy bandgaps of nano-complex oxides. The photocatalytic degradation efficiency of phenol and methylene blue was investigated using all the prepared Eu2O3-ZnO nanostructured samples. Photocatalytic effectiveness increased when europium (Eu) doping ratios increased. After adding moderate Eu, more hydroxyl radicals were generated over ZnO. The best photocatalyst for phenol degradation was 1 percent Eu2O3-ZnO, while it was 0.5 percent Eu2O3-ZnO for methylene blue solutions. The obtained Eu2O3-doped ZnO nanostructured materials are considered innovative, promising candidates for a wide range of nano-applications, including biomedical and photocatalytic degradation of organic dyes and phenol.
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Affiliation(s)
- Thekrayat H. AlAbdulaal
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; (T.H.A.); (M.A.); (H.A.); (H.Y.Z.)
| | - Vanga Ganesh
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; (T.H.A.); (M.A.); (H.A.); (H.Y.Z.)
- Correspondence: (V.G.); (I.S.Y.)
| | - Manal AlShadidi
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; (T.H.A.); (M.A.); (H.A.); (H.Y.Z.)
| | - Mai S. A. Hussien
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt;
- Nanoscience Laboratory for Environmental and Bio-Medical Applications (NLEBA), Semiconductor Laboratory, Metallurgical Lab, Department of Physics, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt
| | - Abdelfatteh Bouzidi
- Research Unit, Physics of Insulating and Semi-insulating Materials, Faculty of Sciences, University of Sfax, B.P. 1171, Sfax 3000, Tunisia;
- Preparatory Year Program, Shaqra University, Al-Quwayiyah Branch, Sahqra 19248, Saudi Arabia
| | - Hamed Algarni
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; (T.H.A.); (M.A.); (H.A.); (H.Y.Z.)
| | - Heba Y. Zahran
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; (T.H.A.); (M.A.); (H.A.); (H.Y.Z.)
- Nanoscience Laboratory for Environmental and Bio-Medical Applications (NLEBA), Semiconductor Laboratory, Metallurgical Lab, Department of Physics, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt
| | - Mohamed Sh. Abdel-wahab
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef 62511, Egypt;
| | - Ibrahim S. Yahia
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; (T.H.A.); (M.A.); (H.A.); (H.Y.Z.)
- Nanoscience Laboratory for Environmental and Bio-Medical Applications (NLEBA), Semiconductor Laboratory, Metallurgical Lab, Department of Physics, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
- Correspondence: (V.G.); (I.S.Y.)
| | - Samia Nasr
- Department of Chemistry, Faculty of Sciences and Arts Touhama, King Khaled University, Muhayil Asir 63311, Saudi Arabia;
- Electrochemistry, Materials, and Environment, Preparatory Institute for Engineering Studies, Kairouan 3100, Tunisia
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Aswathi M, Ganesh V, Berchmans S. MOF based electrode platforms in the assembly of Biofuel cells and Self‐powered sensors. ChemElectroChem 2022. [DOI: 10.1002/celc.202200276] [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: 11/08/2022]
Affiliation(s)
- M Aswathi
- CSIR-CECRI: Central Electrochemical Research Institute CSIR EEC division INDIA
| | - V. Ganesh
- CSIR-CECRI: Central Electrochemical Research Institute CSIR EEC division INDIA
| | - Sheela Berchmans
- CSIR-Central Electrochemical Research Institute: Central Electrochemical Research Institute CSIR Electrodics and electrocatalysis Division CECRI 630006 Karaikudi INDIA
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El-Sayed F, Hussien MSA, Mohammed MI, Ganesh V, AlAbdulaal TH, Zahran HY, Yahia IS, Hegazy HH, Abdel-wahab MS, Shkir M, Valarasu S, Ibrahim MA. The Photocatalytic Performance of Nd 2O 3 Doped CuO Nanoparticles with Enhanced Methylene Blue Degradation: Synthesis, Characterization and Comparative Study. Nanomaterials (Basel) 2022; 12:1060. [PMID: 35407178 PMCID: PMC9000884 DOI: 10.3390/nano12071060] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 03/09/2022] [Accepted: 03/10/2022] [Indexed: 02/01/2023]
Abstract
The growth of the textile industry results in a massive accumulation of dyes on water. This enormous rise in pigments is the primary source of water pollution, affecting the aquatic lives and our ecosystem balance. This study aims to notify the fabrication of neodymium incorporated copper oxide (Nd2O3 doped CuO) nanoparticles by combustion method for effective degradation of dye, methylene blue (MB). X-ray diffraction (XRD), Field emission Scanning electron microscopy (FESEM), Zeta potential have been applied for characterization. Photocatalyst validity has been evaluated for methylene blue degradation (MB). Test conditions such as time of contact, H2O2, pH, and photo-Fenton have been modified to identify optimal degradation conditions. Noticeably, 7.5% Nd2O3 doped CuO nanoparticle demonstrated the highest photocatalytic efficiency, up to 90.8% in 80 min, with a 0.0227 min-1 degradation rate. However, the photocatalytic efficiency at pH 10 becomes 99% with a rate constant of 0.082 min-1. Cyclic experiments showed the Nd2O3 doped CuO nanoparticle's stability over repeated use. Scavenge hydroxyl radical species responsible for degradation using 7.5% Nd2O3 doped CuO nanoparticles have been investigated under visible irradiation.
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Affiliation(s)
- Fatma El-Sayed
- Nanoscience Laboratory for Environmental and Bio-Medical Applications (NLEBA), Metallurgical Lab.1, Department of Physics, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt; (F.E.-S.); (M.S.A.H.); (M.I.M.)
| | - Mai S. A. Hussien
- Nanoscience Laboratory for Environmental and Bio-Medical Applications (NLEBA), Metallurgical Lab.1, Department of Physics, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt; (F.E.-S.); (M.S.A.H.); (M.I.M.)
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt
| | - Mervat I. Mohammed
- Nanoscience Laboratory for Environmental and Bio-Medical Applications (NLEBA), Metallurgical Lab.1, Department of Physics, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt; (F.E.-S.); (M.S.A.H.); (M.I.M.)
| | - Vanga Ganesh
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; (T.H.A.); (H.Y.Z.); (I.S.Y.); (H.H.H.); (M.S.)
| | - Thekrayat H. AlAbdulaal
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; (T.H.A.); (H.Y.Z.); (I.S.Y.); (H.H.H.); (M.S.)
| | - Heba Y. Zahran
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; (T.H.A.); (H.Y.Z.); (I.S.Y.); (H.H.H.); (M.S.)
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
- Semiconductor Laboratory, Department of Physics, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt
| | - Ibrahim S. Yahia
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; (T.H.A.); (H.Y.Z.); (I.S.Y.); (H.H.H.); (M.S.)
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
- Semiconductor Laboratory, Department of Physics, Faculty of Education, Ain Shams University, Roxy, Cairo 11757, Egypt
| | - Hosam H. Hegazy
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; (T.H.A.); (H.Y.Z.); (I.S.Y.); (H.H.H.); (M.S.)
- Department of Physics, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt
| | - Mohamed Sh. Abdel-wahab
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni–Suef University, Beni–Suef 62511, Egypt;
| | - Mohd. Shkir
- Laboratory of Nano-Smart Materials for Science and Technology (LNSMST), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; (T.H.A.); (H.Y.Z.); (I.S.Y.); (H.H.H.); (M.S.)
| | - Santiyagu Valarasu
- PG and Research Department of Physics, Arul Anandar College, Madurai 625514, India;
| | - Medhat A. Ibrahim
- Nanotechnology Research Centre (NTRC), The British University in Egypt (BUE), Suez Desert Road, El-Sherouk City, Cairo 11837, Egypt;
- Molecular Spectroscopy and Modeling Unit, Spectroscopy Department, National Research Centre, 33 El-Bohouth Street, Giza 12622, Egypt
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AlAbdulaal T, AlShadidi M, Hussien M, Ganesh V, Bouzidi AF, Rafique S, Algarni H, Zahran H, Abdel-Wahab M, Yahia I. Multifunctional and smart Er 2O 3-ZnO nanocomposites for electronic ceramic varistors and visible light degradation of wastewater treatment. Environ Sci Pollut Res Int 2022; 29:19109-19131. [PMID: 34713401 DOI: 10.1007/s11356-021-16754-6] [Citation(s) in RCA: 1] [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: 04/16/2021] [Accepted: 09/22/2021] [Indexed: 06/13/2023]
Abstract
In this proposed study, erbium (Er3+)-doped ZnO nanocomposites were prepared through the effective, basic, and green combustion method. The significant effects of Er dopants on the structural, morphological features, dielectric, and optical behaviors of the pure ZnO matrix as well as Er2O3-ZnO nanostructured materials were investigated applying X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transformation infrared (FT-IR) spectroscopy, and UV-Vis spectrophotometer techniques. These results showed that the synthesized Er2O3-ZnO nanocomposites are well polycrystalline. The Er2O3-ZnO nanocomposites are almost uniformly distributed on the surface morphologies. Furthermore, UV-Vis diffuse reflectance spectroscopy, AC electrical conductivity, and dielectric properties' current-voltage characteristics were utilized to examine the influence of erbium doping on the optical properties, energy bandgaps of the proposed Er2O3-ZnO nanostructured powder. The tested nano-samples were applied for the visible light photodegradation of p-chlorophenol(4-CP) and p-nitrophenol (4-NP). The Er-doped ZnO ratio affects the photocatalytic activity of the ZnO matrix. This current research substantiated that more than 99.5% of 4-CP and 4-NP were photodegraded through 30 min of irradiation. Four times, the Er:ZnO nanocatalysts were used and still displayed an efficiency of more than 96.5% for 4-CP and 4-NP degradations in the specified period of 30 min. The as-prepared Er2O3-ZnO nanostructures are considered novel potential candidates in broad nano-applications from visible photocatalytic degradation of waste pollutants to the electronic varistor devices.
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Affiliation(s)
- Thekrayat AlAbdulaal
- Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia.
| | - Manal AlShadidi
- Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia
| | - Mai Hussien
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo, 11757, Egypt
- Nanoscience Laboratory for Environmental and Bio-medical Applications (NLEBA), Semiconductor Lab., Metallurgical Lab.1. Department of Physics, Faculty of Education, Ain Shams University, Roxy, Cairo, 11757, Egypt
| | - Vanga Ganesh
- Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia
| | - Abdel-Fatah Bouzidi
- Research Unit, Physics of Insulating and Semi-insulating Materials, Faculty of Sciences, University of Sfax, B.P.1171, 3000, Sfax, Tunisia
| | - Saqib Rafique
- Multidisciplinary Nanotechnology Centre, College of Engineering, Swansea University, Swansea, SA1 8EN, United Kingdom
| | - Hamed Algarni
- Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia
| | - Heba Zahran
- Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia
- Nanoscience Laboratory for Environmental and Bio-medical Applications (NLEBA), Semiconductor Lab., Metallurgical Lab.1. Department of Physics, Faculty of Education, Ain Shams University, Roxy, Cairo, 11757, Egypt
| | - Mohamed Abdel-Wahab
- Center of Nanotechnology, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Ibrahim Yahia
- Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia
- Nanoscience Laboratory for Environmental and Bio-medical Applications (NLEBA), Semiconductor Lab., Metallurgical Lab.1. Department of Physics, Faculty of Education, Ain Shams University, Roxy, Cairo, 11757, Egypt
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia
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Thangavel B, Berchmans S, Ganesh V. Hollow spheres of iron oxide as an “enzyme-mimic”: preparation, characterization and application as biosensors. NEW J CHEM 2022. [DOI: 10.1039/d1nj05460k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Nanostructured hollow spheres of iron oxide are demonstrated as “nanozymes” for the dual mode (spectrophotometric and electrochemical) detection of hydrogen peroxide & cholesterol biomarkers and a novel electrochemical sensing mechanism is proposed.
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Affiliation(s)
- Balamurugan Thangavel
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Electrodics and Electrocatalysis (EEC) Division, CSIR–Central Electrochemical Research Institute (CSIR–CECRI), Karaikudi, 630003, Tamil Nadu, India
| | - Sheela Berchmans
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Electrodics and Electrocatalysis (EEC) Division, CSIR–Central Electrochemical Research Institute (CSIR–CECRI), Karaikudi, 630003, Tamil Nadu, India
| | - V. Ganesh
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Electrodics and Electrocatalysis (EEC) Division, CSIR–Central Electrochemical Research Institute (CSIR–CECRI), Karaikudi, 630003, Tamil Nadu, India
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17
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Ray A, Soni SL, Singh A, Naik BN, Ghimire A, Ganesh V, Gorla D. Apparent missing tooth due to traumatic dental intrusion during airway management. Anaesth Rep 2022; 10:e12168. [PMID: 35669717 DOI: 10.1002/anr3.12168] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/15/2022] [Indexed: 11/09/2022] Open
Affiliation(s)
- A Ray
- Department of Anaesthesia and Intensive Care Nehru Hospital Chandigarh India
| | - S L Soni
- Department of Anaesthesia and Intensive Care Nehru Hospital Chandigarh India
| | - A Singh
- Department of Anaesthesia and Intensive Care Nehru Hospital Chandigarh India
| | - B N Naik
- Department of Anaesthesia and Intensive Care Nehru Hospital Chandigarh India
| | - A Ghimire
- Department of Anaesthesia and Intensive Care Nehru Hospital Chandigarh India
| | - V Ganesh
- Department of Anaesthesia and Intensive Care Nehru Hospital Chandigarh India
| | - D Gorla
- Department of Anaesthesia and Intensive Care Nehru Hospital Chandigarh India
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Iammarino M, Alfano L, James M, Mozaffar T, Mathews K, Weihl C, Leung D, Statland J, Kang P, Wicklund M, Lowes L, Vissing J, Manera JD, Ganesh V, Holmberg B, DeSpain E, Bates K, Sproule D, Johnson N, GRASP Consortium. LGMD. Neuromuscul Disord 2021. [DOI: 10.1016/j.nmd.2021.07.218] [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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19
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Sreenavya A, Ahammed S, Ramachandran A, Ganesh V, Sakthivel A. Nickel–Ruthenium Bimetallic Species on Hydrotalcite Support: A Potential Hydrogenation Catalyst. Catal Letters 2021. [DOI: 10.1007/s10562-021-03673-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Shafi PM, Joseph N, Karthik R, Shim JJ, Bose AC, Ganesh V. Lemon juice-assisted synthesis of LaMnO3 perovskite nanoparticles for electrochemical detection of dopamine. Microchem J 2021. [DOI: 10.1016/j.microc.2021.105945] [Citation(s) in RCA: 9] [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] [Indexed: 11/30/2022]
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21
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Muthurasu A, Ganesh V. Tuning optical properties of nitrogen-doped carbon dots through fluorescence resonance energy transfer using Rhodamine B for the ratiometric sensing of mercury ions. Anal Methods 2021; 13:1857-1865. [PMID: 33885634 DOI: 10.1039/d1ay00068c] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Carbon dots (CDs) that exhibit fluorescence properties are generally derived from carbonaceous materials, and possess ultrasmall sizes with various exciting physical, chemical and photo-properties, which have been used in many different fields in recent time. Here, we have focused on the preparation of nitrogen-doped CDs (N-CDs) that emit a bright blue fluorescence upon exposure to UV excitation. Furthermore, by employing Rhodamine B (RhB) as a donor molecule, the emission color of N-CDs is altered from blue to red. Interestingly, the optical tuning based upon emission from one particular color to various other colors has been achieved by varying the doping ratio of the donor molecule, RhB. The reason is mainly attributed to the non-radiative energy transfer of the exciton energy from an excited donor to an acceptor through fluorescence resonance energy transfer (FRET). Furthermore, this emission behavior is explored for the ratiometric sensing of mercury ion (Hg2+) in aqueous medium. Among different color emissions, we chose one particular emission color, namely violet, for the detection of the Hg2+ ion. The photoluminescence properties of N-CDs are effectively and systematically quenched with the addition of different mercury ion concentrations, leading to efficient energy transformation arising from the synergetic effect of the electrostatic interaction and metal - ligand coordination between the surface functional groups of N-CDs and Hg2+ ion. On the other hand, RhB has no interaction with Hg2+ ions. These findings provide a way for developing a cheap, selective and suitable sensing matrix for the detection of toxic metal ions, such as mercury (Hg2+) at a low concentration level.
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Affiliation(s)
- A Muthurasu
- Electrodics and Electrocatalysis (EEC) Division, CSIR - Central Electrochemical Research Institute (CSIR - CECRI), Karaikudi - 630003, Tamil Nadu, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
| | - V Ganesh
- Electrodics and Electrocatalysis (EEC) Division, CSIR - Central Electrochemical Research Institute (CSIR - CECRI), Karaikudi - 630003, Tamil Nadu, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
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Krishnaveni P, Ganesh V. Electron transfer studies of a conventional redox probe in human sweat and saliva bio-mimicking conditions. Sci Rep 2021; 11:7663. [PMID: 33828136 PMCID: PMC8027883 DOI: 10.1038/s41598-021-86866-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 12/24/2020] [Accepted: 03/22/2021] [Indexed: 01/19/2023] Open
Abstract
Modern day hospital treatments aim at developing electrochemical biosensors for early diagnosis of diseases using unconventional human bio-fluids like sweat and saliva by monitoring the electron transfer reactions of target analytes. Such kinds of health care diagnostics primarily avoid the usage of human blood and urine samples. In this context, here we have investigated the electron transfer reaction of a well-known and commonly used redox probe namely, potassium ferro/ferri cyanide by employing artificially simulated bio-mimics of human sweat and saliva as unconventional electrolytes. Typically, electron transfer characteristics of the redox couple, [Fe(CN)6]3−/4− are investigated using electrochemical techniques like cyclic voltammetry and electrochemical impedance spectroscopy. Many different kinetic parameters are determined and compared with the conventional system. In addition, such electron transfer reactions have also been studied using a lyotropic liquid crystalline phase comprising of Triton X-100 and water in which the aqueous phase is replaced with either human sweat or saliva bio-mimics. From these studies, we find out the electron transfer reaction of [Fe(CN)6]3−/4− redox couple is completely diffusion controlled on both Au and Pt disc shaped electrodes in presence of sweat and saliva bio-mimic solutions. Moreover, the reaction is partially blocked by the presence of lyotropic liquid crystalline phase consisting of sweat and saliva bio-mimics indicating the predominant charge transfer controlled process for the redox probe. However, the rate constant values associated with the electron transfer reaction are drastically reduced in presence of liquid crystalline phase. These studies are essentially carried out to assess the effect of sweat and saliva on the electrochemistry of Fe2+/3+ redox couple.
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Affiliation(s)
- P Krishnaveni
- Electrodics and Electrocatalysis (EEC) Division, CSIR - Central Electrochemical Research Institute (CSIR - CECRI), Karaikudi, 630003, Tamil Nadu, India
| | - V Ganesh
- Electrodics and Electrocatalysis (EEC) Division, CSIR - Central Electrochemical Research Institute (CSIR - CECRI), Karaikudi, 630003, Tamil Nadu, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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Sundar S, Ganesh V. Bio-assisted preparation of efficiently architectured nanostructures of γ-Fe 2O 3 as a molecular recognition platform for simultaneous detection of biomarkers. Sci Rep 2020; 10:15071. [PMID: 32934306 PMCID: PMC7493908 DOI: 10.1038/s41598-020-71934-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 08/24/2020] [Indexed: 11/08/2022] Open
Abstract
Magnetic nanoparticles of iron oxide (γ-Fe2O3) have been prepared using bio-assisted method and their application in the field of biosensors is demonstrated. Particularly in this work, different nanostructures of γ-Fe2O3 namely nanospheres (NS), nanograsses (NG) and nanowires (NW) are prepared using a bio-surfactant namely Furostanol Saponin (FS) present in Fenugreek seeds extract through co-precipitation method by following "green" route. Three distinct morphologies of iron oxide nanostructures possessing the same crystal structure, magnetic properties, and varied size distribution are prepared and characterized. The resultant materials are analyzed using field emission scanning electron microscopy, transmission electron microscopy, powder X-ray diffraction, X-ray photoelectron spectroscopy, vibrating sample magnetometer and Fourier transform infrared spectroscopy. Moreover, the effect of reaction time and concentration of FS on the resultant morphologies of γ-Fe2O3 nanostructures are systematically investigated. Among different shapes, NWs and NSs of γ-Fe2O3 are found to exhibit better sensing behaviour for both the individual and simultaneous electrochemical detection of most popular biomarkers namely dopamine (DA) and uric acid (UA). Electrochemical studies reveal that γ-Fe2O3 NWs showed better sensing characteristics than γ-Fe2O3 NSs and NGs in terms of distinguishable voltammetric signals for DA and UA with enhanced oxidation current values. Differential pulse voltammetric studies exhibit linear dependence on DA and UA concentrations in the range of 0.15-75 µM and 5 μM - 0.15 mM respectively. The detection limit values for DA and UA are determined to be 150 nM and 5 µM. In addition γ-Fe2O3 NWs modified electrode showed higher sensitivity, reduced overpotential along with good selectivity towards the determination of DA and UA even in the presence of other common interferents. Thus the proposed biosensor electrode is very easy to fabricate, eco-friendly, cheaper and possesses higher surface area suggesting the unique structural patterns of γ-Fe2O3 nanostructures to be a promising candidate for electrochemical bio-sensing and biomedical applications.
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Affiliation(s)
- Sasikala Sundar
- Electrodics and Electrocatalysis (EEC) Division, CSIR - Central Electrochemical Research Institute (CSIR - CECRI), Karaikudi, Tamilnadu, 630003, India
| | - V Ganesh
- Electrodics and Electrocatalysis (EEC) Division, CSIR - Central Electrochemical Research Institute (CSIR - CECRI), Karaikudi, Tamilnadu, 630003, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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Sharma D, Sakthivel A, Michelraj S, Muthurasu A, Ganesh V. Surfactant Intercalated Mono‐metallic Cobalt Hydrotalcite: Preparation, Characterization, and its Bi‐functional Electrocatalytic Application. ChemistrySelect 2020. [DOI: 10.1002/slct.202002030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Dhanjay Sharma
- Department of ChemistryInorganic Materials & Catalysis LaboratoryUniversity of Delhi (North Campus) Delhi 110007 India
| | - A. Sakthivel
- Department of ChemistrySchool of Physical SciencesCentral University of Kerala, Tejaswini Hills Periye P.O. Kasaragod 671320 Kerala India
| | - S. Michelraj
- Electrodics and Electrocatalysis (EEC) DivisionCSIR – CentralElectrochemical Research Institute (CSIR–CECRI) Karaikudi 630003 Tamilnadu India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - A. Muthurasu
- Electrodics and Electrocatalysis (EEC) DivisionCSIR – CentralElectrochemical Research Institute (CSIR–CECRI) Karaikudi 630003 Tamilnadu India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - V. Ganesh
- Electrodics and Electrocatalysis (EEC) DivisionCSIR – CentralElectrochemical Research Institute (CSIR–CECRI) Karaikudi 630003 Tamilnadu India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
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25
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Dwivedi AND, Ganesh V, Shukla RC, Jain M, Kumar I. Colour Doppler evaluation of uterine and ovarian blood flow in patients of polycystic ovarian disease and post-treatment changes. Clin Radiol 2020; 75:772-779. [PMID: 32660710 DOI: 10.1016/j.crad.2020.05.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 05/18/2020] [Indexed: 02/05/2023]
Abstract
AIM To assess the morphology and colour Doppler parameters in patients with polycystic ovarian syndrome (PCOS) and also to assess the changes in Doppler parameters in follow-up patients, who underwent treatment. MATERIALS AND METHODS The study was conducted on 50 women of reproductive age who had clinical and biochemical findings suggestive of PCOS. Clinico-hormonal parameters were recorded. Ultrasound and colour Doppler flow measurements of bilateral ovaries were performed in the early proliferative phase of the menstrual cycle. After assessment of the bilateral ovaries, colour Doppler ultrasound was used to evaluate the main uterine artery at the cervico-uterine junction. Follow-up imaging after 3 months was undertaken in patients who underwent treatment (metformin) and changes in the imaging and hormonal parameters were correlated. RESULTS The mean value of luteinising hormone (LH) and the ratio of LH: follicle-stimulating hormone (FSH) was significantly higher in PCOS patients. Ultrasound parameters were significantly higher in PCOS patients. Ovarian stromal vessels in PCOS patients had a significantly higher peak systolic velocity (PSV), low resistance index (RI), and pulsatility index (PI). The PSV of uterine arteries were significantly decreased and the RI and PI were significantly increased. On follow-up patients revealed changes in hormonal parameters. CONCLUSION PCOS is a heterogeneous disorder and is a convergence of multisystem endocrine derangements. Ultrasound is good diagnostic tool for PCOS and the use of Doppler aids in the evaluation of haemodynamic changes in small vessels of utero-ovarian circulation and in response assessment.
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Affiliation(s)
- A N D Dwivedi
- Department of Radiodiagnosis and Imaging, Institute of Medical Sciences, Banaras Hindu University, India.
| | - V Ganesh
- Department of Radiodiagnosis and Imaging, Institute of Medical Sciences, Banaras Hindu University, India
| | - R C Shukla
- Department of Radiodiagnosis and Imaging, Institute of Medical Sciences, Banaras Hindu University, India
| | - M Jain
- Department of Obstetrics and Gynaecology, Institute of Medical Sciences, Banaras Hindu University, India
| | - I Kumar
- Department of Radiodiagnosis and Imaging, Institute of Medical Sciences, Banaras Hindu University, India
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26
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Trikha V, Veeresh V, Mittal S, Ganesh V, Bansal H. A new method in sacral fracture fixation. Injury 2020; 51:580. [PMID: 31879173 DOI: 10.1016/j.injury.2019.12.026] [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: 11/14/2019] [Accepted: 12/16/2019] [Indexed: 02/02/2023]
Affiliation(s)
- Vivek Trikha
- Department of Orthopaedics, JPN Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Vivek Veeresh
- Department of Orthopaedics, JPN Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi 110029, India.
| | - Samarth Mittal
- Department of Orthopaedics, JPN Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi 110029, India
| | - V Ganesh
- Department of Orthopaedics, JPN Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Hemant Bansal
- Department of Orthopaedics, JPN Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi 110029, India
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Wu Y, Lin G, Zhou X, Chen J, Zhuang J, Chen Q, Luo Y, Lu D, Ganesh V, Zeng R. Exploring structural stability mechanism of TiO2 encapsulated in 3D flower-like SnS2 anode for lithium ion batteries. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2019.113740] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Saravanakumar B, Ramachandran SP, Ravi G, Ganesh V, Guduru RK, Sakunthala A, Yuvakkumar R. MnFe₂O₄ Nanoparticles as an Efficient Electrode for Energy Storage Applications. J Nanosci Nanotechnol 2020; 20:96-105. [PMID: 31383143 DOI: 10.1166/jnn.2020.17187] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this study, solvothermal method was used for the synthesis of MnFe₂O₄ nanoparticles at different processing period of 7, 14, and 21 h. X-ray diffraction (XRD) pattern study confirms that MnFe₂O₄ nanoparticles correspond to the face-centered cubic spinel structure and belong to the Fd3m [227] space group. From Raman spectra analysis, two major peaks were observed at 476 and 616 cm-1, which correspond to the vibration modes of MnFe₂O₄ nanoparticles; especially, the broad peak at 620 cm-1 (A1g) corresponds to the symmetric stretching vibration of oxygen atoms at tetrahedral site. Infrared spectra (FTIR) analysis at 490 and 572 cm-1 can be attributed to the stretching vibration of tetrahedral groups of FeO₄, and the vibration of octahedral groups of FeO6 belongs to the intrinsic vibrations of manganese ferrites. The uniformly distributed MnFe₂O₄ nanospheres (RT2) can be affirmed by field emission scanning electron microscopy images and confirmed by the high-resolution transmission electron microscopic studies. The electrochemical properties of synthesized MnFe₂O₄ nanoparticles investigated by cyclic voltammetry, impedance spectroscopy and galvanstatic charging and discharging (GCD) studies clearly predict the reversible faradaic reactions of MnFe₂O₄ nanospheres. Further, the MnFe₂O₄ nanospheres (RT2) exhibit high specific capacitance of 697 F g-1 at 0.5 A g-1 current density in galvanostatic charging and discharging profile and after 1000 cycles exhibits 79% retain ability of initial specific capacitance and hence can be considered as the efficient electrode for supercapacitor applications.
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Affiliation(s)
- B Saravanakumar
- Nanomaterials Laboratory, Department of Physics, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - S P Ramachandran
- Nanomaterials Laboratory, Department of Physics, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - G Ravi
- Nanomaterials Laboratory, Department of Physics, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - V Ganesh
- Electrodics and Electrocatalysis (EEC) Division, CSIR-Central Electrochemical Research Institute (CSIR-CECRI), Karaikudi 630003, Tamil Nadu, India
| | - Ramesh K Guduru
- Department of Mechanical Engineering, Lamar University, Beaumont, TX 77710, USA
| | - A Sakunthala
- Department of Physics, School of Science and Humanities, Karunya University, Karunya Nagar, Coimbatore 641114, Tamil Nadu, India
| | - R Yuvakkumar
- Nanomaterials Laboratory, Department of Physics, Alagappa University, Karaikudi 630003, Tamil Nadu, India
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Shkir M, Ganesh V, AlFaify S, Yahia I, Maurya K. Remarkable effect of l-Ascorbic acid on crystal morphology, structural, crystalline perfection, optical, photoluminescence and dielectric properties of Zinc(tris) thiourea sulphate (ZTS) single crystals. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2017.12.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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Gannavarapu KP, Ganesh V, Dandamudi RB. Zirconia nanocomposites with carbon and iron(iii) oxide for voltammetric detection of sub-nanomolar levels of methyl parathion. Nanoscale Adv 2019; 1:4947-4954. [PMID: 36133142 PMCID: PMC9419288 DOI: 10.1039/c9na00589g] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 10/28/2019] [Indexed: 06/16/2023]
Abstract
This study reports the synthesis of zirconia nanoparticles loaded on various carbon substrates, namely, reduced graphene oxide (Zr-r-GO), carbon nanotubes (Zr-CNT), and activated carbon (Zr-AC). In addition, a composite of zirconia-iron mixed oxide loaded on activated carbon (FeZr-AC) was also synthesized. The materials were characterized using SEM-EDX, HRTEM, FTIR, Raman spectroscopy, TGA and XRD. The FeZr-AC sample was found to have a nanorod like morphology. The samples were evaluated for their sensing potential towards methyl parathion (MP) using differential pulse voltammetry in a range of 0.0 V to -0.9 V (vs. Ag/AgCl) by drop casting on a glassy carbon electrode (GCE). All the modified GCEs best operated at a working potential of 0.4-0.9 V vs. Ag/AgCl/Cl-. FeZr-AC was found have the best limit of detection followed by Zr-AC, Zr-CNT and Zr-r-GO with their detection limits being 1.7 × 10-9 M, 17.2 ×10-9 M, 243.3 × 10-9 M and 534.0 × 10-9 M respectively. These materials were then used to detect MP in spiked sewage samples and showed good recoveries.
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Affiliation(s)
- Krishna Prasad Gannavarapu
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning Prasanthinilayam Campus, Puttaparthi Anantapur Dist. Andhra Pradesh 515134 India +08555286919 +919441587413
| | - V Ganesh
- Electrodics and Electrocatalysis Division, CSIR-Central Electrochemical Research Institute Karaikudi Tamil Nadu 630001 India
| | - Rajesh Babu Dandamudi
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning Prasanthinilayam Campus, Puttaparthi Anantapur Dist. Andhra Pradesh 515134 India +08555286919 +919441587413
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Gannavarapu KP, Ganesh V, Thakkar M, Mitra S, Dandamudi RB. Nanostructured Diatom-ZrO 2 composite as a selective and highly sensitive enzyme free electrochemical sensor for detection of methyl parathion. Sens Actuators B Chem 2019; 288:611-617. [PMID: 31772421 PMCID: PMC6879064 DOI: 10.1016/j.snb.2019.03.036] [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] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
In the current work we report a simple and scalable technique for synthesis of ordered nanoporous Si-ZrO2 composite derived from the diatom Phaeodactylum tricornutum. The composite was well characterized using SEM, TEM-EDX, FTIR, TGA, BET and DLS. The diatom-ZrO2 was found to have a specific surface area of 140 m2/g, Si:Zr ratio of 1:4 and a particle size of 80 ± 2 nm. This composite was evaluated as an enzyme free electrochemical sensor towards the detection of methyl parathion (MP) and showed excellent sensing ability at extremely low detection limits of 54.3 pM and a linear concentration range of 3.4 nM to 64 μM. The diatom-ZrO2 composite was also found to be highly selective towards MP as shown by its response even in the presence of high concentrations of other interfering molecules and ions.
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Affiliation(s)
- Krishna Prasad Gannavarapu
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthinilayam Campus, Puttaparthi, Anantapur Dist, Andhra Pradesh, India
| | - V. Ganesh
- Electrodics and Electrocatalysis Division, CSIR-Central Electrochemical Research Institute, Karaikudi, Tamil Nadu, India
| | - Megha Thakkar
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, 151 Tiernan Hall, Newark, NJ, 07102, United States
| | - Somenath Mitra
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, 151 Tiernan Hall, Newark, NJ, 07102, United States
| | - Rajesh Babu Dandamudi
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthinilayam Campus, Puttaparthi, Anantapur Dist, Andhra Pradesh, India
- Corresponding author at: Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prashanthi Nilayam, 515134, India. (R.B. Dandamudi)
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Saravanakumar B, Ravi G, Ganesh V, Ravichandran S, Sakunthala A, Yuvakkumar R. Low Surface Energy and pH Effect on SnO₂ Nanoparticles Formation for Supercapacitor Applications. J Nanosci Nanotechnol 2019; 19:3429-3436. [PMID: 30744770 DOI: 10.1166/jnn.2019.16098] [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: 06/09/2023]
Abstract
The SnO₂ nanoparticles formation by hydrothermal method at different experimental conditions such as temperature, pH, reaction time, and capping agent (cetyltrimethylammonium bromide), was studied. X-ray diffraction results confirmed regular rutile crystal structure of SnO₂. The characteristic Raman peak observed at 635 cm-1 corresponded to A1g modes of Sn-O vibrations. The study of optical property using photoluminescence confirmed the emissive spectra of SnO₂. The infrared peak observed at 618 cm-1 corresponded to Eu modes of Sn-O vibrations of TO phonon because of E⊥ to c-axis. Scanning electron microscope images clearly revealed the formation of complete SnO₂ nanoparticles. The unique SnO₂ nanoparticles stacked together to form microspheres at pH-5 showed high specific capacitance of 274.8 F/g at a current density of 0.5 A/g. The observed results confirmed the feasibility of SnO₂ nanoparticles being used as appropriate positive electrode candidate for supercapacitor applications.
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Affiliation(s)
- B Saravanakumar
- Nanomaterials Laboratory, Department of Physics, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - G Ravi
- Nanomaterials Laboratory, Department of Physics, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - V Ganesh
- Electrodics and Electrocatalysis (EEC) Division, CSIR-Central Electrochemical Research Institute (CSIR-CECRI), Karaikudi 630003, Tamil Nadu, India
| | - S Ravichandran
- Electro Inorganic Division, CSIR-Central Electrochemical Research Institute (CSIR-CECRI), Karaikudi 630003, Tamil Nadu, India
| | - A Sakunthala
- Department of Physics, School of Science and Humanities, Karunya Institute of Technology and Sciences, Karunya Nagar, Coimbatore 641114, Tamil Nadu, India
| | - R Yuvakkumar
- Nanomaterials Laboratory, Department of Physics, Alagappa University, Karaikudi 630003, Tamil Nadu, India
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Mohan Kumar G, Cho H, Ilanchezhiyan P, Siva C, Ganesh V, Yuldashev S, Madhan Kumar A, Kang T. Evidencing enhanced charge-transfer with superior photocatalytic degradation and photoelectrochemical water splitting in Mg modified few-layered SnS2. J Colloid Interface Sci 2019; 540:476-485. [DOI: 10.1016/j.jcis.2019.01.039] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 01/08/2019] [Accepted: 01/11/2019] [Indexed: 11/25/2022]
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Nayak M, Yadav R, Ganesh V, Digge V. An unusual case of femoral head perforation following fixation with proximal femoral nail antirotation (PFNA-II) for an unstable intertrochanteric fracture: Case report and literature review. Trauma Case Rep 2019; 20:100178. [PMID: 30805427 PMCID: PMC6374611 DOI: 10.1016/j.tcr.2019.100178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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] [Accepted: 02/04/2019] [Indexed: 11/24/2022] Open
Abstract
The proximal femoral nail antirotation (PFNA-II) is designed for fixation of unstable proximal femoral fractures in Asian patients due to its superior biomechanical properties. The helical blade achieves purchase through bone compaction and requires less removal of bone than a screw. Medial migration of the helical blade with perforation into the hip joint without loss of reduction is a rare problem noted with PFNA. Past literature reporting the migration of the helical blade medially, perforating the femoral head has been addressed as a characteristic complication of the PFNA. A review of literature suggests various reasons for the same such as fresh trauma, fracture settlement and failure of lateralization of the blade. We report a case of postoperative medial migration of the helical blade perforating the femoral head due to loosening of the locking bolt of the helical blade without any signs of rotational or varus displacement of the fracture.
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Affiliation(s)
- Mayur Nayak
- Jay Prakash Narayan Apex Trauma Center, All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | - Rahul Yadav
- Jay Prakash Narayan Apex Trauma Center, All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | - V Ganesh
- Jay Prakash Narayan Apex Trauma Center, All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | - Vijay Digge
- Department of Orthopaedics, All India Institute of Medical Sciences (AIIMS), New Delhi, India
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Mahalingam K, Chelliah R, Rangasamy R, Ramani S, Sriram S, Ganesh V. Awareness about diabetic retinopathy among doctors not specialized in ophthalmology. TNOA J Ophthalmic Sci Res 2019. [DOI: 10.4103/tjosr.tjosr_56_19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Mangaiyarkarasi R, Selvam S, Ganesh V, Umadevi S. A cholesterol based imidazolium ionic liquid crystal: synthesis, characterisation and its dual application as an electrolyte and electrode material. NEW J CHEM 2019. [DOI: 10.1039/c8nj04988b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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
Dual application of a new cholesterol containing imidazolium ionic liquid crystal as an electrolyte for hybrid flexible supercapacitor and an electrode material in combination with carbon paste.
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Affiliation(s)
- R. Mangaiyarkarasi
- Department of Industrial Chemistry
- School of Chemical Sciences
- Alagappa University
- Karaikudi – 630003
- India
| | - S. Selvam
- Department of Chemical and Biochemical Engineering
- Dongguk University
- Seoul – 100715
- South Korea
| | - V. Ganesh
- Electrodics and Electrocatalysis Division (EEC)
- CSIR – Central Electrochemical Research Institute (CSIR-CECRI)
- Karaikudi – 630003
- India
| | - S. Umadevi
- Department of Industrial Chemistry
- School of Chemical Sciences
- Alagappa University
- Karaikudi – 630003
- India
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Shkir M, Arif M, Ganesh V, Manthrammel M, Singh A, Yahia I, Maidur SR, Patil PS, AlFaify S. Investigation on structural, linear, nonlinear and optical limiting properties of sol-gel derived nanocrystalline Mg doped ZnO thin films for optoelectronic applications. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.06.105] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [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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Wan BA, Ganesh V, Zhang L, Sousa P, Drost L, Lorentz J, Vesprini D, Lee J, Rakovitch E, Lu FI, Eisen A, Yee C, Lam H, Chow E. Response to: The Survival Time of 8376 Male Breast Cancer Patients. Clin Oncol (R Coll Radiol) 2018; 30:818-819. [PMID: 30213703 DOI: 10.1016/j.clon.2018.08.011] [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: 05/27/2018] [Revised: 07/20/2018] [Accepted: 08/21/2018] [Indexed: 11/15/2022]
Affiliation(s)
- B A Wan
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - V Ganesh
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - L Zhang
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - P Sousa
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - L Drost
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - J Lorentz
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - D Vesprini
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - J Lee
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - E Rakovitch
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - F-I Lu
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - A Eisen
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - C Yee
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - H Lam
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - E Chow
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
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Paterson T, Maini N, Ganesh V, Newman L. Pneumoparotid: An unusual case of intermittent unilateral cheek swelling. Int J Surg 2018. [DOI: 10.1016/j.ijsu.2018.05.105] [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]
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Rani BJ, Saravanakumar B, Ravi G, Ganesh V, Sakunthala A, Yuvakkumar R. Structural, Optical and Magnetic Properties of NiO Nanopowders. J Nanosci Nanotechnol 2018; 18:4658-4666. [PMID: 29442643 DOI: 10.1166/jnn.2018.15301] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nickel oxide (NiO) nanopowders were synthesized without using surfactant by chemical reduction technique. NaBH4 influence on structural, optical and magnetic properties of NiO product was investigated. XRD results revealed the formation of dominant single phase, cubic face centered nickel oxide. Raman peaks depicts the characteristic first-order transverse optical (TO) phonon, two phonon excitation (TO + LO), excitation (2LO) Raman mode vibrations of face centered cubic NiO. PL studies revealed the presence of strong emission band which is in good agreement with the intrinsic NiO product. FTIR studies explored metal oxygen vibrations of the obtained product. TEM results revealed the nanoscale product with spherical shape structures. VSM studies explored weak ferromagnetic behavior of the obtained product. High concentration of NaBH4 increases magnetization value and exhibits the typical weak ferromagnetic curve. Reducing agent played a vital role in the structural, optical and magnetic properties of the obtained NiO product.
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Affiliation(s)
- B Jansi Rani
- Nanomaterials Laboratory, Department of Physics, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - B Saravanakumar
- Department of Organic Materials and Fiber Engineering, Chonbuk National University, Jeonju-561 756, South Korea
| | - G Ravi
- Nanomaterials Laboratory, Department of Physics, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - V Ganesh
- Electrodics and Electrocatalysis (EEC) Division, CSIR-Central Electrochemical Research Institute (CSIR-CECRI), Karaikudi 630003, Tamil Nadu, India
| | - A Sakunthala
- Department of Physics, School of Science and Humanities, Karunya University, Karunya Nagar, Coimbatore 641114, Tamil Nadu, India
| | - R Yuvakkumar
- Nanomaterials Laboratory, Department of Physics, Alagappa University, Karaikudi 630003, Tamil Nadu, India
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Patil PS, Maidur SR, Shkir M, AlFaify S, Ganesh V, Krishnakanth KN, Rao SV. Crystal growth and characterization of second- and third-order nonlinear optical chalcone derivative: (2E)-3-(5-bromo-2-thienyl)-1-(4-nitrophenyl)prop-2-en-1-one. J Appl Crystallogr 2018. [DOI: 10.1107/s1600576718006386] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Experimental and computational studies of linear and nonlinear optical (NLO) properties of (2E)-3-(5-bromo-2-thienyl)-1-(4-nitrophenyl)prop-2-en-1-one (5B2SNC) single crystals are reported. Good-quality and large-sized single crystals of 5B2SNC were successfully grown and characterized by powder X-ray diffraction and high-resolution X-ray diffractometry techniques. 5B2SNC was found to crystallize in the monoclinic noncentrosymmetric space group Cc and possesses moderately good crystalline perfection. The linear optical properties were investigated using the absorption spectrum, which reveals a direct optical band gap of 3.1 eV. The thermal stability was studied with thermogravimetric analysis/differential thermal analysis. The powder second harmonic generation efficiency was evaluated by the Kurtz and Perry method, and 5B2SNC was found to be 26 times more efficient than urea standard. Third-order NLO properties were studied by the z-scan technique with a femtosecond laser. The second hyperpolarizability was obtained to be ∼1.45 × 10−31 e.s.u. The molecule reveals a strong reverse saturation absorption and negative nonlinear refraction. The molecule exhibited good optical limiting properties, and its limiting threshold was measured to be ∼3.2 mJ cm−2. In addition, static electric dipole moments, linear polarizabilities, and first- and second-order hyperpolarizabilities were calculated by density functional theory (DFT). Highest occupied molecular orbital/lowest unoccupied molecular orbital band gaps were also evaluated by DFT calculations. The experimental and theoretical results showed that 5B2SNC exhibits excellent second- and third-order nonlinear optical properties.
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Sivaranjini B, Mangaiyarkarasi R, Ganesh V, Umadevi S. Vertical Alignment of Liquid Crystals Over a Functionalized Flexible Substrate. Sci Rep 2018; 8:8891. [PMID: 29891908 PMCID: PMC5995910 DOI: 10.1038/s41598-018-27039-3] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [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: 02/19/2018] [Accepted: 05/14/2018] [Indexed: 12/03/2022] Open
Abstract
A simple and effective approach for vertical alignment of liquid crystals (LCs) over a functionalized transparent flexible substrate is described. Surface characterization of this commercially available plastic substrate through X-ray photoelectron spectroscopy (XPS) and attenuated total reflection infrared spectroscopy (ATR-IR) indicated that cellulose acetate is main component of the transparent substrate. This substrate was chemically functionalized with a suitable LC compound. A trimethoxysilane terminated new rod-shaped mesogen is synthesized and covalently attached to the pre-treated film through silane condensation reaction. LC functionalization of the polymer film is confirmed through contact angle (CA), atomic force microscopy (AFM), XPS and ATR-IR spectroscopy studies. Versatility of the LC modified flexible substrates for the alignment of bulk LC sample at substrate-LC interface was assessed for nematic (N) and smectic A (SmA) phases. Remarkably, LC functionalized cellulose acetate films were found to be highly efficient in assisting a perfect homeotropic alignment of LCs (for both, a room temperature N and a high temperature SmA phase) over the entire area of the LC sample under observation indicating their superior aligning ability in comparison to their unmodified and octadecyltrimethoxysilane (OTS) modified counterparts. The demonstrated method of surface modification of flexible polymer film is easy, surface modified substrates are stable for several months, retained their aligning ability intact and more importantly they are reusable with maximum delivery.
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Affiliation(s)
- B Sivaranjini
- Department of Industrial Chemistry, Alagappa University, Karaikudi, 630003, India
| | - R Mangaiyarkarasi
- Department of Industrial Chemistry, Alagappa University, Karaikudi, 630003, India
| | - V Ganesh
- Electrodics and Electrocatalysis Division (EEC), CSIR - Central Electrochemical Research Institute (CSIR-CECRI), Karaikudi, 630003, India
| | - S Umadevi
- Department of Industrial Chemistry, Alagappa University, Karaikudi, 630003, India.
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Mallikarjuna VJ, Mathew V, Ayyar V, Bantwal G, Ganesh V, George B, Hemanth GN, Vinotha P. Five-year Retrospective Study on Primary Hyperparathyroidism in South India: Emerging Roles of Minimally Invasive Parathyroidectomy and Preoperative Localization with Methionine Positron Emission Tomography-Computed Tomography Scan. Indian J Endocrinol Metab 2018; 22:355-361. [PMID: 30090727 PMCID: PMC6063170 DOI: 10.4103/ijem.ijem_445_16] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Primary hyperparathyroidism (PHPT) is a common endocrine disease with a variable clinical presentation. PHPT is usually symptomatic at presentation in majority of the patients, especially in developing countries. As the accessibility to investigations, advanced imaging methods and surgical procedures are improving, the clinical profile of the patients with PHPT has undergone a palpable change compared to the earlier description. Hence we decided to look for a change in clinical, imaging and surgical outcomes of PHPT patients from South India. METHODS We collected the data on clinical presentation, biochemistry, radiological features and operative findings of patients with PHPT treated in our hospital from 2011-2015. Cases of PHPT were identified from the laboratory values using the biochemical criteria, after the exclusion of secondary and tertiary hyperparathyroidism cases. RESULTS Our study identified 54 patients (19 males and 35 females) with age ranging from 16 to 71 years. A Significant proportion(38.9%) of the patients were asymptomatic. Musculoskeletal symptoms (40.7%), renal manifestations (27.7%) and gastrointestinal system involvement (27.7%) constituted the other common modes of presentation. CNS involvement was seen in 3 patients. A palpable nodule in the neck was detected in 4 patients. Interestingly 4 patients were managed for parathyroid crisis at presentation. Biochemical features included hypercalcaemia (100%) and hypophosphatemia (59%) with a mean intact PTH level of 602.0±721.3 pg/ml. Sensitivity of Ultrasonography and Tc99M Sestamibi was 72% and 70.6% respectively for detecting a parathyroid adenoma. Sensitivity of C11 methionine PET-CT was 71.4% in those patients who were negative for other imaging modalities. Forty three patients (79.6%) underwent minimally invasive parathyroidectomy. CONCLUSION In South India we have a notable change in the clinical presentation of PHPT from a symptomatic to an asymptomatic state. C11 Methionine PET - CT is an emerging modality for preoperative localisation especially when other imaging modalities are negative and when a minimally invasive parathyroidectomy is desired.
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Affiliation(s)
- V. J. Mallikarjuna
- Department of Endocrinology, St. Johns Hospital and Medical College, Bengaluru, Karnataka, India
| | - Vivek Mathew
- Department of Endocrinology, St. Johns Hospital and Medical College, Bengaluru, Karnataka, India
| | - Vageesh Ayyar
- Department of Endocrinology, St. Johns Hospital and Medical College, Bengaluru, Karnataka, India
| | - Ganapathy Bantwal
- Department of Endocrinology, St. Johns Hospital and Medical College, Bengaluru, Karnataka, India
| | - V Ganesh
- Department of Endocrinologyst, Johns Hospital and Medical College, Bengaluru, Karnataka, India
| | - Belinda George
- Department of Endocrinology, St. Johns Hospital and Medical College, Bengaluru, Karnataka, India
| | - G. N. Hemanth
- Department of Surgical Oncology, St. Johns Hospital and Medical College, Bengaluru, Karnataka, India
| | - P. Vinotha
- Division of Epidemiology and Biostatistics, St John's Research Institute, Bengaluru, Karnataka, India
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Ravikumar M, Ganesh V, Shkir M, Chandramohan R, Arun Kumar KD, Valanarasu S, Kathalingam A, AlFaify S. Fabrication of Eu doped CdO [Al/Eu-nCdO/p-Si/Al] photodiodes by perfume atomizer based spray technique for opto-electronic applications. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.01.095] [Citation(s) in RCA: 19] [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: 10/18/2022]
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Rani BJ, Ravina M, Saravanakumar B, Ravi G, Ganesh V, Ravichandran S, Yuvakkumar R. Ferrimagnetism in cobalt ferrite (CoFe 2 O 4 ) nanoparticles. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.nanoso.2018.01.012] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Wan BA, Ganesh V, Zhang L, Sousa P, Drost L, Lorentz J, Vesprini D, Lee J, Rakovitch E, Lu FI, Eisen A, Yee C, Lam H, Chow E. Treatment Outcomes in Male Breast Cancer: A Retrospective Analysis of 161 Patients. Clin Oncol (R Coll Radiol) 2018; 30:354-365. [PMID: 29496323 DOI: 10.1016/j.clon.2018.02.026] [Citation(s) in RCA: 9] [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] [Received: 10/10/2017] [Revised: 12/28/2017] [Accepted: 01/11/2018] [Indexed: 12/31/2022]
Abstract
AIMS Male breast cancer is a rare disease with limited evidence-based guidelines for treatment. This study aimed to identify demographic, pathological and clinical factors associated with its prognosis. MATERIALS AND METHODS A retrospective review of 161 male breast cancer patients diagnosed at a single institution from 1987 to June 2017 was conducted. Patient demographics, disease characteristics, treatment and outcome were extracted and included in competing-risk analysis and the univariate Cox proportional hazard model for univariate analysis. Factors with P < 0.10 were included in multivariable analysis. RESULTS The mean age at diagnosis was 67 years (standard deviation = 11.2) and the median follow-up duration was 5.3 years (range 0-25 years). There were 48 deaths, including 23 cancer-specific deaths. The actuarial median survival was 19.9 years. In multivariable analysis, factors associated with overall survival were size of tumours (hazard ratio 2.0; 95% confidence interval 1.4-2.7, P < 0.0001) and diagnosis of metastatic disease (hazard ratio 8.7; 95% confidence interval 1.9-40.6; P = 0.006). Of 138 patients without metastases at diagnoses, 11 had local-regional recurrence and 26 had distant metastases. In the multivariable model for local-regional recurrence, a more recent year of diagnosis was associated with reduced risk (hazard ratio 0.9, 95% confidence interval 0.8-1.0, P = 0.008), whereas more positive lymph nodes was associated with higher risk (hazard ratio 2.2, 95% confidence interval 1.2-4.0, P = 0.01). A higher risk of metastases was associated with more positive lymph nodes (hazard ratio 1.9; 95% confidence interval 1.1-3.3; P = 0.03) and tumour size (hazard ratio 1.8; 95% confidence interval 1.1-2.9; P = 0.01). A higher risk of any recurrence or metastases was associated with the number of positive nodes (hazard ratio 1.9; 95% confidence interval 1.2-3.0; P = 0.005) and tumour size (hazard ratio 1.6; 95% confidence interval 1.1-2.2; P = 0.01). CONCLUSION In general, tumour size and more positive lymph nodes were associated with worse prognosis. Larger powered studies are needed to identify prognostic factors with smaller effect sizes.
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Affiliation(s)
- B A Wan
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - V Ganesh
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - L Zhang
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - P Sousa
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - L Drost
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - J Lorentz
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - D Vesprini
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - J Lee
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - E Rakovitch
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - F-I Lu
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - A Eisen
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - C Yee
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - H Lam
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - E Chow
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada.
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Shkir M, Irfan A, AlFaify S, Ganesh V, Arora M, Muhammad S, Al-Sehemi AG, Yahia I. Key optoelectronic properties of Diiodo-bis(carbamide)-zinc(II): An experimental and computational investigation. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.11.074] [Citation(s) in RCA: 4] [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] [Indexed: 10/18/2022]
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David Prabu R, Valanarasu S, Ganesh V, Shkir M, AlFaify S, Kathalingam A. Investigation of molar concentration effect on structural, optical, electrical, and photovoltaic properties of spray-coated Cu2
O thin films. SURF INTERFACE ANAL 2018. [DOI: 10.1002/sia.6374] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- R. David Prabu
- PG and Research Department of Physics; Arul Anandar College; Karumathur Madurai India
| | - S. Valanarasu
- PG and Research Department of Physics; Arul Anandar College; Karumathur Madurai India
| | - V. Ganesh
- Advanced Functional Materials and Optoelectronic Laboratory (AFMOL), Department of Physics, Faculty of Science; King Khalid University; PO Box 9004 Abha Saudi Arabia
| | - Mohd Shkir
- Advanced Functional Materials and Optoelectronic Laboratory (AFMOL), Department of Physics, Faculty of Science; King Khalid University; PO Box 9004 Abha Saudi Arabia
| | - S. AlFaify
- Advanced Functional Materials and Optoelectronic Laboratory (AFMOL), Department of Physics, Faculty of Science; King Khalid University; PO Box 9004 Abha Saudi Arabia
| | - A. Kathalingam
- Millimeter-Wave Innovation Technology Research Centre (MINT); Dongguk University; Seoul 04620 South Korea
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Arulanantham A, Valanarasu S, Jeyadheepan K, Ganesh V, Shkir M. Development of SnS (FTO/CdS/SnS) thin films by nebulizer spray pyrolysis (NSP) for solar cell applications. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.09.077] [Citation(s) in RCA: 18] [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] [Indexed: 01/15/2023]
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Shkir M, Ganesh V, AlFaify S, Maurya KK, Vijayan N. Effect of phenol red dye on monocrystal growth, crystalline perfection, and optical and dielectric properties of zinc (tris) thiourea sulfate. J Appl Crystallogr 2017. [DOI: 10.1107/s1600576717014339] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
In this work, the growth of large size (∼25 × 29 × 5 mm and ∼25 × 24 × 6 mm) colorful single crystals of zinc (tris) thiourea sulfate (ZTS) in the presence of 0.05–2 wt% phenol red (PR) dye was achieved using a simple and low-cost technique. Powder X-ray diffraction patterns confirm the presence of PR dye, which is indicated by an enhancement of the Raman peak intensities, a shift in their position and the appearance of a few extra peaks. The quality of the grown crystals was assessed by high-resolution X-ray diffraction, which shows that the crystalline perfection of 1 wt% PR-dyed ZTS crystals is better than that of 2 wt% PR-dyed crystals. The measured UV–vis absorbance spectra show two additional, strong absorption bands at ∼430 and 558 nm in the dyed crystals, due to the presence of PR dye, along with a band at ∼276 nm which is present for all crystals but is slightly shifted for the dyed crystals. Photoluminescence spectra were recorded at two excitation wavelengths (λexc= 310 and 385 nm). The luminescence intensity is found to be enriched in dyed crystals, with some extra emission bands. An enhancement in the value of the dielectric constant and a.c. electrical conductivity was also observed in the dyed ZTS crystals.
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