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Mahesh DN, Sreelatha B, Vinoth S, Nancy S. Clinical profile of children with influenza like illness during pre-monsoon at coastal Karaikal, Puducherry, India. Bioinformation 2024; 20:252-257. [PMID: 38712005 PMCID: PMC11069598 DOI: 10.6026/973206300200252] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 03/31/2024] [Accepted: 03/31/2024] [Indexed: 05/08/2024] Open
Abstract
Influenza infections in developing countries are under reported and WHO estimates that nearly 99% of influenza deaths worldwide occur in children under-five years of age in Asian and African countries. Consequently, this study aims to analyze the use of clinical profile and easily available laboratory parameters to aid identification of the possible viral etiology in the setting of pre-monsoon ILI. A cross-sectional study was carried out for three months among children with ILI attending fever clinic of a tertiary care hospital in Karaikal, South India. In the study population the prevalence of ILI was highest in the age group four to five years followed by school aged children. Adolescents were affected the least. Influenza B was most common virus causing ILI in this region, followed by covid-19 infection. Laboratory parameters depicted a significantly high ESR in COVID-19 infected ILI children. They also exhibited leucopenia and normal platelet counts. Clinical symptoms and laboratory parameters which are easily available and cheaper can be used in resource poor settings of healthcare to identify possible influenza and COVID-19 infected children amongst cases presenting with ILI.
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Affiliation(s)
- Dande Naga Mahesh
- Department of Paediatrics, Vinayaka Mission's Medical College and Hospital, Vinayaka Mission's Research Foundation - Deemed to be University (VMRF-DU), Karaikal, Puducherry, India
| | - B Sreelatha
- Department of Paediatrics, Vinayaka Mission's Medical College and Hospital, Vinayaka Mission's Research Foundation - Deemed to be University (VMRF-DU), Karaikal, Puducherry, India
| | - S Vinoth
- Department of Paediatrics, Vinayaka Mission's Medical College and Hospital, Vinayaka Mission's Research Foundation - Deemed to be University (VMRF-DU), Karaikal, Puducherry, India
| | - S Nancy
- Department of Community Medicine, Vinayaka Mission's Medical College and Hospital, Vinayaka Mission's Research Foundation - Deemed to be University (VMRF-DU), Karaikal, Puducherry, India
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2
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Vinoth S, Balasubramanian S, Perumal E, Santhakumar K. Angiogenesis Assay for Live and Fixed Zebrafish Embryos/Larvae. Methods Mol Biol 2024; 2753:377-384. [PMID: 38285352 DOI: 10.1007/978-1-0716-3625-1_21] [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] [Indexed: 01/30/2024]
Abstract
Angiogenesis is the process of new blood vessel formation from preexisting vasculature. It is an integral component in normal embryonic development and tissue repair. Dysregulation of angiogenesis might lead to tissue ischemia (resulting from reduced blood vessel formation) or major diseases such as cancer (abnormal vascular growth). This makes angiogenesis an excellent area of research for cancer therapeutics, and various animal models including zebrafish are used to study blood vessel development. As most of the techniques used to study angiogenesis are complex and cumbersome, in this chapter, we provide two simple assays to study angiogenesis with live and fixed zebrafish embryos/larvae.
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Affiliation(s)
- S Vinoth
- Zebrafish Genetics Laboratory, Department of Genetic Engineering, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu, Tamil Nadu, India
| | - Satheeswaran Balasubramanian
- Molecular Toxicology Laboratory, Department of Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Ekambaram Perumal
- Molecular Toxicology Laboratory, Department of Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu, India.
| | - Kirankumar Santhakumar
- Zebrafish Genetics Laboratory, Department of Genetic Engineering, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu, Tamil Nadu, India.
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Gunasekaran N, Vadivel R, Zhai G, Vinoth S. Finite-time stability analysis and control of stochastic SIR epidemic model: A study of COVID-19. Biomed Signal Process Control 2023; 86:105123. [PMID: 37337551 PMCID: PMC10261717 DOI: 10.1016/j.bspc.2023.105123] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 05/20/2023] [Accepted: 06/08/2023] [Indexed: 06/21/2023]
Abstract
Finite-time stability analysis is a powerful tool for understanding the long-term behavior of epidemiological models and has been widely used to study the spread of infectious diseases such as COVID-19. In this paper, we present a finite-time stability analysis of a stochastic susceptible-infected-recovered (SIR) epidemic compartmental model with switching signals. The model includes a linear parameter variation (LPV) and switching system that represents the impact of external factors, such as changes in public health policies or seasonal variations, on the transmission rate of the disease. We use the Lyapunov stability theory to examine the long-term behavior of the model and determine conditions under which the disease is likely to die out or persist in the population. By taking advantage of the average dwell time method and Lyapunov functional (LF) method, and using novel inequality techniques the finite-time stability (FTS) criterion in linear matrix inequalities (LMIs) is developed. The finite-time stability of the resultant closed-loop system, with interval and linear parameter variation (LPV), is then guaranteed by state feedback controllers. By analyzing the modified SIR model with these interventions, we are able to examine the efficiency of different control measures and determine the most appropriate response to the COVID-19 pandemic and demonstrate the efficacy of the suggested strategy through simulation results.
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Affiliation(s)
- Nallappan Gunasekaran
- Eastern Michigan Joint College of Engineering, Beibu Gulf University, Qinzhou 535011, China
| | - R Vadivel
- Department of Mathematics, Faculty of Science and Technology, Phuket Rajabhat University, Phuket - 83000, Thailand
| | - Guisheng Zhai
- Department of Mathematical Sciences, Shibaura Institute of Technology, Saitama 337-8570, Japan
| | - S Vinoth
- Centre for Nonlinear Systems, Chennai Institute of Technology, Chennai - 600 069, Tamilnadu, India
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Vinoth S, Selvaraj V, Venkatasubramanian H, Santhakumar K. A Simple Blood Vessel Imaging Protocol for Live Zebrafish Larva. Zebrafish 2022; 19:177-180. [DOI: 10.1089/zeb.2022.0023] [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: 11/06/2022] Open
Affiliation(s)
- S. Vinoth
- Zebrafish Genetics Laboratory, Department of Genetic Engineering, SRM Institute of Science and Technology, Kattankulathur, India
| | - Velanganni Selvaraj
- Zebrafish Genetics Laboratory, Department of Genetic Engineering, SRM Institute of Science and Technology, Kattankulathur, India
| | - Hemagowri Venkatasubramanian
- Zebrafish Genetics Laboratory, Department of Genetic Engineering, SRM Institute of Science and Technology, Kattankulathur, India
| | - Kirankumar Santhakumar
- Zebrafish Genetics Laboratory, Department of Genetic Engineering, SRM Institute of Science and Technology, Kattankulathur, India
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Dogariu A, Cohen SA, Jandovitz P, Vinoth S, Evans ES, Swanson CPS. A diagnostic to measure neutral-atom density in fusion-research plasmas. Rev Sci Instrum 2022; 93:093519. [PMID: 36182459 DOI: 10.1063/5.0101683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 08/16/2022] [Indexed: 06/16/2023]
Abstract
A femtosecond two-photon-absorption laser-induced-fluorescence (TALIF) diagnostic was designed, installed, and operated on the Princeton-Field-Reversed Configuration-2 device to provide non-invasive measurements of the time and spatially resolved neutral-atom densities in its plasmas. Calibration of the Ho density was accomplished by comparison with Kr TALIF. Measurements on plasmas formed of either H2 or Kr fill gases allowed examination of nominally long and short ionization mean-free-path regimes. With multi-kW plasma heating and H2 fill gas, a spatially uniform Ho density of order 1017 m-3 was measured with better than ±2 mm and 10 µs resolution. Under similar plasma conditions but with Kr fill gas, a 3-fold decrease in the in-plasma Kr density was observed.
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Affiliation(s)
- A Dogariu
- Mechanical and Aerospace Engineering Department, Princeton University, Princeton, New Jersey 08540, USA
| | - S A Cohen
- Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, New Jersey 08543, USA
| | - P Jandovitz
- Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, New Jersey 08543, USA
| | - S Vinoth
- Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, New Jersey 08543, USA
| | - E S Evans
- Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, New Jersey 08543, USA
| | - C P S Swanson
- Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, New Jersey 08543, USA
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Vinoth S, Ong WJ, Pandikumar A. Defect engineering of BiOX (X = Cl, Br, I) based photocatalysts for energy and environmental applications: Current progress and future perspectives. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214541] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [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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Chahal S, Prabhudessai AG, Shekhawat R, Vinoth S, Ramesh K. Structure-property relationships in critically connected (GeTe 4) 100-x(As 2Se 3) x glasses. Dalton Trans 2022; 51:12100-12113. [PMID: 35903976 DOI: 10.1039/d2dt01969h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thermal, optical, mechanical and structural studies were carried out on glasses in the pseudo-binary joint GeTe4-As2Se3 prepared by a melt quenching method. (GeTe4)100-x(As2Se3)x glasses in the entire composition range of 0 ≤ x ≤ 100 have an average coordination number (Zav) = 2.4, where the glass forming ability is found to be maximum. In general, for Zav ≤ 2.4, the glass transition is found to be dominated by the network connectivity and the chemical composition effects are minimal. Although Zav of Ge20Te80 (GeTe4) and As2Se3 (As40Se60) is 2.4, GeTe4 is a poor glass former and As2Se3 is an excellent glass former. The glass-forming ability is expected to increase with the addition of As2Se3. Surprisingly, the glass forming ability is found to decrease with the initial addition of As2Se3 and then shows an increasing trend. Glass transition (Tg) shows a large variation from 175 °C for x = 0 to 108 °C for x = 30. Based on the variation in the properties, the tie-line can be divided into three regions: region I (0 ≤ x ≤ 20) where Tg shows a decreasing trend, region II (25 ≤ x ≤ 55) where Tg remains almost constant and region III (60 ≤ x ≤ 100) where Tg shows an increasing trend. Hardness measurement also shows a similar trend in the three regions. Thermal stability shows a continuous increase with the increase of As2Se3. The fragility index varies between 15 and 30 for all these glasses except for x = 0 (GeTe4) indicating the strong nature of the melts containing As2Se3. Raman studies indicate that the glassy network is dominated mainly by GeTe(4/2) in region I and in region III the network is dominated by AsSe(3/2) based structures. Glasses in region II are found to be dominated by AsTe3/2 based structures. This study brings out the dominance of chemical composition effects over the network connectivity in a critically coordinated network. These glasses are also found to transmit IR light up to 18 μm and offer a wide composition range to prepare bulk glasses to be useful for infrared applications.
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Affiliation(s)
- Shweta Chahal
- Department of Physics, Indian Institute of Science, Bangalore 560012, India.
| | | | - Roopali Shekhawat
- Department of Physics, Indian Institute of Science, Bangalore 560012, India.
| | - S Vinoth
- Department of Physics, Indian Institute of Science, Bangalore 560012, India.
| | - K Ramesh
- Department of Physics, Indian Institute of Science, Bangalore 560012, India.
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Kumar S, Kumara HN, Velankar AD, Mishra PS, Pal A, Sundararaj P, Singh M, Vinoth S. Prevalence of gastrointestinal parasites in the Nicobar long-tailed macaque (Macaca fascicularis umbrosus) on the Nicobar Group of Islands, India. CURR SCI INDIA 2022. [DOI: 10.18520/cs/v122/i10/1199-1208] [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: 11/15/2022]
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Magudeeswaran S, Vinoth S, Sathiyanathan K, Sivabalan M. Impact of fear on delayed three species food-web model with Holling type-II functional response. INT J BIOMATH 2021. [DOI: 10.1142/s1793524522500140] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
This paper deals with the investigation of the three species food-web model. This model includes two logistically growing interaction species, namely [Formula: see text] and [Formula: see text], and the third species [Formula: see text] behaves as the predator and also host for [Formula: see text]. The species [Formula: see text] predating on the species [Formula: see text] with the Holling type-II functional response, while the first species [Formula: see text] is benefited from the third species [Formula: see text]. Further, the effect of fear is incorporated in the growth rate of species [Formula: see text] due to the predator [Formula: see text] and time lag in [Formula: see text] due to the gestation process. We explore all the biologically possible equilibrium points, and their local stability is analyzed based on the sample parameters. Next, we investigate the occurrence of Hopf-bifurcation around the interior equilibrium point by taking the value of the fear parameter as a bifurcation parameter for the non-delayed system. Moreover, we verify the local stability and existence of Hopf-bifurcation for the corresponding delayed system. Also, the direction and stability of the bifurcating periodic solutions are determined using the normal form theory and the center manifold theorem. Finally, we perform extensive numerical simulations to support the evidence of our analytical findings.
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Affiliation(s)
- S. Magudeeswaran
- Department of Mathematics, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Bharathiar University, Coimbatore 641020, India
| | - S. Vinoth
- Department of Mathematics, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Bharathiar University, Coimbatore 641020, India
| | - K. Sathiyanathan
- Department of Mathematics, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Bharathiar University, Coimbatore 641020, India
| | - M. Sivabalan
- Department of Mathematics, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Bharathiar University, Coimbatore 641020, India
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10
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Sylvia SC, Vinoth S. A Study of D-Dimer Levels in Acute Febrile Non Covid Conditions in a Tertiary Care Hospital. JPRI 2021. [DOI: 10.9734/jpri/2021/v33i48a33230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Introduction: Acute undifferentiated febrile illness (AUFI) is caused by a multitude of diverse pathogens, with significant morbidity and mortality in the developing world. This study aims to highlight the gaps in our understanding of the various differential diagnosis of acute febrile illness and their prognostic outcomes. In this study, We used d-dimer levels to arrive at a differential diagnosis in acute febrile illness and also used it as a biomarker of disease severity and prognostic outcome.
Materials and Methods: A prospective study was conducted at medicine department, Saveetha medical college and hospital, Thandalam, India for a period of 3 months from January 2020 - March 2020. Patients who presented to the medicine outpatient department with symptoms of acute febrile illness with non specific symptoms were registered after getting written consent in the study. The plasma concentration of D -dimer levels ,prothrombin time , APTT from which INR were measured. The duration of hospital stay of patients in study was recorded. The data collected was entered into an excel sheet and analysed using SPCC software.
Results: A total of 50 patients with acute febrile illness were enrolled in the study. Out of which 37 patients (74./. of patients) were found to have elevated D dimer levels.
These 37 patients with elevated D – dimer levels required longer duration of hospital stay, reflecting the need for more days for recovery.
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11
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Vinoth S, Shalini Devi K, Pandikumar A. A comprehensive review on graphitic carbon nitride based electrochemical and biosensors for environmental and healthcare applications. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116274] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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12
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Das HT, Vinoth S, Thirumoorthi M, Alshahrani T, Hegazy HH, Somaily HH, Shkir M., AIFaify S. Tuning the Optical, Electrical, and Optoelectronic Properties of CuO Thin Films Fabricated by Facile SILAR Dip‐Coating Technique for Photosensing Applications. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-021-01928-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Vinoth S, Ong WJ, Pandikumar A. Sulfur-doped graphitic carbon nitride incorporated bismuth oxychloride/Cobalt based type-II heterojunction as a highly stable material for photoelectrochemical water splitting. J Colloid Interface Sci 2021; 591:85-95. [PMID: 33592528 DOI: 10.1016/j.jcis.2021.01.104] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [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: 10/20/2020] [Revised: 01/28/2021] [Accepted: 01/31/2021] [Indexed: 12/27/2022]
Abstract
Cobalt incorporated sulfur-doped graphitic carbon nitride with bismuth oxychloride (Co/S-gC3N4/BiOCl) heterojunction is prepared by an ultrasonically assisted hydrothermal treatment. The heterojunction materials have employed in photoelectrochemical (PEC) water splitting. The PEC activity and stability of the materials are promoted by constructing an interface between the visible light active semiconductor photocatalyst and cocatalysts. The photocurrent density of Co-9% S-gC3N4/BiOCl has attained 393.0 μA cm-2 at 1.23 V vs. RHE, which is 7-fold larger than BiOCl and ~3-fold higher than 9% S-gC3N4/BiOCl. The enhanced PEC activity can be attributed to the improved electron-hole charge separation and the boosted charge transfer is confirmed by photoluminescence (PL) and electrochemical impedance spectroscopy (EIS) analysis. The fabricated Co/S-gC3N4/BiOCl nanohybrid material has exhibited high stability of up to 10,800 s (3 h) at 1.23 V vs. RHE during PEC water splitting reaction and the obtained photo-conversion efficiency is 3.7-fold greater than S-gC3N4/BiOCl and 17-fold higher than BiOCl. The FESEM and HRTEM images have revealed the formation of heterojunction interface between S-gC3N4 and BiOCl and the elemental mapping has confirmed the presence of cobalt over S-gC3N4/BiOCl. The heterojunction interface has facilitated the photo-excited charge separation and transport across the electrode/electrolyte interface and also the flat-band potential, which is confirmed by Mott-Schottky analysis.
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Affiliation(s)
- S Vinoth
- Electro Organic and Materials Electrochemistry Division, CSIR-Central Electrochemical Research Institute, Karaikudi 630 003, Tamil Nadu, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Wee-Jun Ong
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sansuria, 43900 Sepang, Selangor Darul Ehsan, Malaysia; College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - A Pandikumar
- Electro Organic and Materials Electrochemistry Division, CSIR-Central Electrochemical Research Institute, Karaikudi 630 003, Tamil Nadu, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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Vinoth S, Subramani K, Ong WJ, Sathish M, Pandikumar A. CoS2 engulfed ultra-thin S-doped g-C3N4 and its enhanced electrochemical performance in hybrid asymmetric supercapacitor. J Colloid Interface Sci 2021; 584:204-215. [DOI: 10.1016/j.jcis.2020.09.071] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/04/2020] [Accepted: 09/18/2020] [Indexed: 12/17/2022]
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15
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Gowthaman S, Lakshmi B, Elamaran E, Vinoth S, Ramanathan M. Postoperative outcomes of microphlebectomy and Trendelenburg operation with stripping for saphenofemoral junction incompetence. Formos J Surg 2021. [DOI: 10.4103/fjs.fjs_94_20] [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: 11/04/2022] Open
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Arunpandiyan S, Raja A, Vinoth S, Pandikumar A, Arivarasan A. Hierarchical porous CeO 2 micro rice-supported Ni foam binder-free electrode and its enhanced pseudocapacitor performance by a redox additive electrolyte. NEW J CHEM 2021. [DOI: 10.1039/d1nj01877a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A hierarchical porous CeO2 micro rice/NF binder free electrode was fabricated via a facile hydrothermal method and the electrochemical performances were enhanced by the addition of 0.2 M K4[Fe(CN)6] redox additive in a 3 M KOH electrolyte.
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Affiliation(s)
- S. Arunpandiyan
- Multifunctional Materials Laboratory
- Department of Physics
- International Research Centre
- Kalasalingam Academy of Research and Education
- Krishnankoil-626126
| | - A. Raja
- Department of Chemistry
- College of Natural Sciences
- Yeungnam University
- Gyeongsan
- Gyeongbuk 38541
| | - S. Vinoth
- Electro Organic and Materials Electrochemistry Division
- CSIR-Central Electrochemical Research Institute
- Karaikudi
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - A. Pandikumar
- Electro Organic and Materials Electrochemistry Division
- CSIR-Central Electrochemical Research Institute
- Karaikudi
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - A. Arivarasan
- Multifunctional Materials Laboratory
- Department of Physics
- International Research Centre
- Kalasalingam Academy of Research and Education
- Krishnankoil-626126
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17
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Vinoth S, Rajaitha PM, Pandikumar A. Modulating photoelectrochemical water splitting performance by constructing a type-II heterojunction between g-C3N4 and BiOI. NEW J CHEM 2021. [DOI: 10.1039/d0nj05384h] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
g-C3N4/BiOI type-II heterojunction prepared by ultrasonically aided hydrothermal method exhibits high stability during PEC water splitting for up to 6000 s at 1.23 V vs. RHE.
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Affiliation(s)
- S. Vinoth
- Electro Organic and Materials Electrochemistry Division, CSIR-Central Electrochemical Research Institute
- Karaikudi – 630003
- India
- Academy of Scientific and Innovative Research (AcSIR)
- Ghaziabad – 201002
| | - P. Mary Rajaitha
- Electro Organic and Materials Electrochemistry Division, CSIR-Central Electrochemical Research Institute
- Karaikudi – 630003
- India
| | - A. Pandikumar
- Electro Organic and Materials Electrochemistry Division, CSIR-Central Electrochemical Research Institute
- Karaikudi – 630003
- India
- Academy of Scientific and Innovative Research (AcSIR)
- Ghaziabad – 201002
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18
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Vinoth S, Rajaitha PM, Venkadesh A, Shalini Devi KS, Radhakrishnan S, Pandikumar A. Nickel sulfide-incorporated sulfur-doped graphitic carbon nitride nanohybrid interface for non-enzymatic electrochemical sensing of glucose. Nanoscale Adv 2020; 2:4242-4250. [PMID: 36132783 PMCID: PMC9418721 DOI: 10.1039/d0na00172d] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Accepted: 07/30/2020] [Indexed: 05/05/2023]
Abstract
A nickel sulfide-incorporated sulfur-doped graphitic carbon nitride (NiS/S-g-C3N4) nanohybrid was utilized as an interface material for the non-enzymatic sensing of glucose in an alkaline medium (0.1 M NaOH). The precursors used in the preparation of NiS/S-g-C3N4 hybrid were thiourea and nickel nitrate hexahydrate as the sulfur and nickel sources, respectively. The HRTEM results reveal that NiS nanoparticles incorporated on the S-g-C3N4 nanosheet surface could enhance the electrocatalytic activity and electrical conductivity. The prepared NiS/S-g-C3N4 crystalline nature, surface functionalities, graphitic nature, thermal stability and surface composition were investigated using XRD, FT-IR, Raman spectroscopy, TGA and XPS analyses. The NiS/S-g-C3N4 modified electrode was used for the non-enzymatic sensing of glucose at an applied potential of 0.55 V vs. Ag/AgCl with a detection limit of 1.5 μM (S/N = 3), sensitivity of 80 μA mM-1 cm-2 and the response time of the fabricated sensor was close to 5 s. Different inorganic ions and organic substances did not interfere during glucose sensing. The NiS/S-g-C3N4 nanohybrid material could be extended for a real sample analysis and open the way for diverse opportunities in the electrochemical sensing of glucose.
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Affiliation(s)
- S Vinoth
- Electro Organic and Materials Electrochemistry Division, CSIR-Central Electrochemical Research Institute Karaikudi-630 003 Tamil Nadu India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
| | - P Mary Rajaitha
- Electro Organic and Materials Electrochemistry Division, CSIR-Central Electrochemical Research Institute Karaikudi-630 003 Tamil Nadu India
| | - A Venkadesh
- Electrodics and Electrocatalysis Division, CSIR-Central Electrochemical Research Institute Karaikudi-630 003 Tamil Nadu India
| | - K S Shalini Devi
- Electro Organic and Materials Electrochemistry Division, CSIR-Central Electrochemical Research Institute Karaikudi-630 003 Tamil Nadu India
| | - S Radhakrishnan
- Electrodics and Electrocatalysis Division, CSIR-Central Electrochemical Research Institute Karaikudi-630 003 Tamil Nadu India
| | - A Pandikumar
- Electro Organic and Materials Electrochemistry Division, CSIR-Central Electrochemical Research Institute Karaikudi-630 003 Tamil Nadu India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
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Vinoth S, Sampathkumar P, Giribabu K, Pandikumar A. Ultrasonically assisted synthesis of barium stannate incorporated graphitic carbon nitride nanocomposite and its analytical performance in electrochemical sensing of 4-nitrophenol. Ultrason Sonochem 2020; 62:104855. [PMID: 31806549 DOI: 10.1016/j.ultsonch.2019.104855] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 10/30/2019] [Accepted: 11/01/2019] [Indexed: 05/24/2023]
Abstract
We describe the ultrasonic assisted preparation of barium stannate-graphitic carbon nitride nanocomposite (BSO-gCN) by a simple method and its application in electrochemical detection of 4-nitrophenol via electro-oxidation. A bath type ultrasonic cleaner with ultrasonic power and ultrasonic frequency of 100 W and 50 Hz, respectively, was used for the synthesis of BSO-gCN nanocomposite material. The prepared BSO-gCN nanocomposite was characterized by employing several spectroscopic and microscopic techniques such as X-ray diffraction, X-ray photoelectron spectroscopy, fourier transform infra-red, field emission scanning electron microscopy, and high resolution transmission electron microscopy, to unravel the structural and electronic features of the prepared nanocomposite. The BSO-gCN was drop-casted on a pre-treated glassy carbon electrode (GCE), and their sensor electrode was utilized for electrochemical sensing of 4-nitrophenol (4-NP). The BSO-gCN modified GCE exhibited better electrochemical sensing behavior than the bare GCE and other investigated electrodes. The electroanalytical parameters such as charge transfer coefficient (α = 0.5), the rate constant for electron transfer (ks = 1.16 s-1) and number of electron transferred were calculated. Linear sweep voltammetry (LSV) exhibited increase in peak current linearly with 4-NP concentration in the range between 1.6 and 50 μM. The lowest detection limit (LoD) was calculated to be 1 μM and sensitivity of 0.81 μA μM-1 cm-2. A 100-fold excess of various ions, such as Ca2+, Na+, K+, Cl-, I-, CO32-, NO3, NH4+ and SO42- did not able to interfere with the determination of 4-NP and high sensitivity for detecting 4-NP in real samples was achieved. This newly developed BSO-gCN could be a potential candidate for electrochemical sensor applications.
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Affiliation(s)
- S Vinoth
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; Functional Materials Division, CSIR-Central Electrochemical Research Institute, Karaikudi 630 003, Tamil Nadu, India
| | - P Sampathkumar
- Functional Materials Division, CSIR-Central Electrochemical Research Institute, Karaikudi 630 003, Tamil Nadu, India
| | - K Giribabu
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; Electrodics and Electrocatalysis Division, CSIR-Central Electrochemical Research Institute, Karaikudi 630 003, Tamil Nadu, India
| | - A Pandikumar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; Functional Materials Division, CSIR-Central Electrochemical Research Institute, Karaikudi 630 003, Tamil Nadu, India.
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Vinoth S, Shankar SG, Gurusaravanan P, Janani B, Devi JK. Anti-larvicidal Activity of Silver Nanoparticles Synthesized from Sargassum polycystum Against Mosquito Vectors. J CLUST SCI 2018. [DOI: 10.1007/s10876-018-1473-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Kumar S, Sundararaj P, Kumara HN, Pal A, Santhosh K, Vinoth S. Prevalence of gastrointestinal parasites in bonnet macaque and possible consequences of their unmanaged relocations. PLoS One 2018; 13:e0207495. [PMID: 30440026 PMCID: PMC6237399 DOI: 10.1371/journal.pone.0207495] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Accepted: 10/31/2018] [Indexed: 11/18/2022] Open
Abstract
Relocation is one of the mitigating measures taken by either local people or related officers to reduce the human-bonnet macaque Macaca radiata conflict in India. The review on relocations of primates in India indicates that monkeys are unscreened for diseases or gastrointestinal parasites (henceforth endoparasites) before relocation. We collected 161 spatial samples from 20 groups of bonnet macaque across their distribution range in south India and 205 temporal samples from a group in Chiksuli in the central Western Ghats. The isolation of endoparasite eggs/cysts from the fecal samples was by the centrifugation flotation and sedimentation method. All the sampled groups, except one, had an infection of at least one endoparasite taxa, and a total of 21 endoparasite taxon were recorded. The number of helminth taxon (16) were more than protozoan (5), further, among helminths, nematodes (11) were more common than cestodes (5). Although the prevalence of Ascaris sp. (26.0%), Strongyloides sp. (13.0%), and Coccidia sp. (13.0%) were greater, the load of Entamoeba coli, Giardia sp., Dipylidium caninum and Diphyllobothrium sp. were very high. Distant groups had more similarity in composition of endoparasites taxon than closely located groups. Among all the variables, the degree of provisioning was the topmost determinant factor for the endoparasite taxon richness and their load. Temporal sampling indicates that the endoparasite infection remains continuous throughout the year. Monthly rainfall and average maximum temperature in the month did not influence the endoparasite richness. A total of 17 taxon of helminths and four-taxon of protozoan were recorded. The prevalence of Oesophagostomum sp., and Strongyloides sp., and mean egg load of Spirurids and Trichuris sp. was higher than other endoparasite taxon. The overall endoparasite load and helminth load was higher in immatures than adults, where, adult females had the highest protozoan load in the monsoon. The findings indicate that relocation of commensal bonnet macaque to wild habitat can possible to lead transmission of novel endoparasites that can affect their population. Thus, we suggest avoidance of such relocations, however, if inevitable the captured animals need to be screened and treated for diseases and endoparasites before relocations.
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Affiliation(s)
- Shanthala Kumar
- Unit of Nematology-Department of Zoology, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Palanisamy Sundararaj
- Unit of Nematology-Department of Zoology, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Honnavalli N. Kumara
- Department of Conservation Biology, Sálim Ali Centre for Ornithology and Natural History, Coimbatore, Tamil Nadu, India
| | - Arijit Pal
- Department of Conservation Biology, Sálim Ali Centre for Ornithology and Natural History, Coimbatore, Tamil Nadu, India
| | - K. Santhosh
- Department of Conservation Biology, Sálim Ali Centre for Ornithology and Natural History, Coimbatore, Tamil Nadu, India
| | - S. Vinoth
- Department of Conservation Biology, Sálim Ali Centre for Ornithology and Natural History, Coimbatore, Tamil Nadu, India
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Johny A, Rajkumar BK, Nagalakshmi S, Kumar RR, Vinoth S, Dayanithi D. Effect of malocclusion severity on oral health-related quality of life and food intake ability in orthodontic patients. Int J Orthod Rehabil 2018. [DOI: 10.4103/ijor.ijor_45_17] [Citation(s) in RCA: 2] [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: 11/04/2022]
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Siva G, Sivakumar S, Prem Kumar G, Vigneswaran M, Vinoth S, Muthamil Selvan A, Parveez Ahamed A, Manivannan K, Rajesh Kumar R, Thajuddin N, Senthil Kumar T, Jayabalan N. Optimization of elicitation condition with Jasmonic Acid, characterization and antimicrobial activity of Psoralen from direct regenerated plants of Psoralea corylifolia L. Biocatalysis and Agricultural Biotechnology 2015. [DOI: 10.1016/j.bcab.2015.10.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Gurusaravanan P, Vinoth S, Satheesh Kumar M, Thajuddin N, Jayabalan N. Effect of cyanobacterial extracellular products on high-frequency in vitro induction and elongation of Gossypium hirsutum L organs through shoot apex explants. Journal of Genetic Engineering and Biotechnology 2013. [DOI: 10.1016/j.jgeb.2013.04.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Vinoth S, Kanna PR, Gurusarava P, Jayabalan N. Evaluation of Phytochemical, Antimicrobial and GC-MS analysis of extracts of Indigofera trita L.F. SPP. subulata (vahl ex poir). ACTA ACUST UNITED AC 2011. [DOI: 10.3923/ijar.2011.358.367] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [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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Prabhakaran A, Lal S, Biswas S, Vinoth S, Asraf AS, Mittal V. Serological study of rickettsial diseases in human and rodent population in Chittoor dist. (A.P.). J Commun Dis 2010; 42:209-213. [PMID: 22471185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In India the presence of Rickettsial disease in human is documented in many states however, the data on presence of Rickettsial infection in Andhra Pradesh is very scare. Therefore, a study was undertaken in Chittoor district (A.P.) to see the prevalence of Rickettsial infection in human and rodent population. 3-5 ml of human blood samples were collected from the patients attending the nearest hospitals of Tirumala, Tirupathi, Palmner and Chittoor areas. Live rodents were trapped and blood samples were collected from them during January and February 2008. Sera was separated and tested by Weil Felix test. Two hundred human sera samples were tested. Of these 39 samples were found reactive with Weil Felix antigen. Of the 39 reactive, 31 were male and 8 female. All the human samples were showing reactivity at 1:20 dilution. Out of the 343 rodents samples tested, only 24 samples were showing reactivity. These were reactive at 1:20, 1:40 and 1:80 dilutions with different types of Weil Felix antigens. Eight rodent sera samples were having titer 1:80 with Proteus OXK which is suggestive of presence of Scrub typhus in this region.
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