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| 1 | Variable speed wind turbine for maximum power capture using adaptive fuzzy integral sliding mode control显示文摘This paper presents a nonlinear control approach to variable speed wind turbine(VSWT)with a wind speed estimator.The dynamics of the wind turbine(WT)is derived from single mass model.In this work,a modified Newton Raphson estimator has been considered for exact estimation of effective wind speed.The main objective of this work is to extract maximum energy from the wind at below rated wind speed while reducing drive train oscillation.In order to achieve the above objectives,VSWT should operate close to the optimal power coefficient.The generator torque is considered as the control input to achieve maximum energy capture.From the literature,it is clear that existing linear and nonlinear control techniques suffer from poor tracking of WT dynamics,increased power loss and complex control law.In addition,they are not robust with respect to input disturbances.In order to overcome the above drawbacks,adaptive fuzzy integral sliding mode control(AFISMC)is proposed for VSWT control.The proposed controller is tested with different types of disturbances and compared with other nonlinear controllers such as sliding mode control and integral sliding mode control.The result shows the better performance of AFISMC and its robustness to input disturbances.In this paper,the discontinuity in integral sliding mode controller is smoothed by using hyperbolic tangent function,and the sliding gain is adapted using a fuzzy technique which makes the controller more robust. | Saravanakumar RAJENDRAN Debashisha JENA | 2014 | Journal of Modern Power Systems and Clean Energy2014，2，2： | 8 |
| 2 | A novel n-CeO2/n-CdO heterojunction nanocomposite for enhanced photodegradation of organic pollutants under visible light irradiation显示文摘In this study,a series of novel visible light driven n-CeO2/n-CdO heterojunction(CeO2/CdO)nanoco mposites we re successfully fabricated by simple ultrasonication method.Several characte rization tools including X-ray diffraction(XRD),scanning electro n microscopy(SEM),transmission electron microscopy(TEM)and UV-vis diffuse reflectance spectroscopy(UV-DRS),etc.,were utilized to investigate the physicochemical properties of the catalyst and confirm the formation of heterojunction.Under visible light irradiations,the photocatalytic activities of the as-prepared CeO2/CdO nanocomposites were evaluated by degrading of Congo red(CR)and Rhodamine B(RhB)solutions.As a result,the CeO2/CdO(mass percentage ratio 1:3)nanocomposite displays remarkable performance for CR and RhB degradation.The enhancement in the photocatalytic performance of CeO2/CdO(1:3)nanocomposite can be attributed not only to the strong visible-light absorption region,separating the photogenerated electronhole pairs but also to the formation of n-n type heterojunction.The results also indicate that the CeO2/CdO(1:3)nanocomposite has good stabilization and high reusability.In addition,the mechanism is proposed for the coupled semiconductors and possible reasons for the enhancement of visible-light photocatalytic efficiency are also discussed.This work can provide a new gateway to fabricate visible photocatalysts and promising candidate catalysts for poisonous wastewater treatment in the near future. | Karunamoorthy Saravanakumar Subramani Muthupoongodi Velluchamy Muthuraj | 2019 | Journal of Rare Earths2019，37，8： | 6 |
| 3 | Backstepping sliding mode control of a variable speed wind turbine for power optimization显示文摘To optimize the energy capture from the wind,wind turbine(WT)should operate at variable speed.Based on the wind speed,the operating regions of the WT are divided into two parts:below and above the rated wind speed.The main aim at below rated wind speed is to maximize the energy capture from the wind with reduced oscillation on the drive train.At above rated wind speed,the aim is to maintain the rated power by using pitch control.This paper presents the control of WT at below rated wind speed by using backstepping sliding mode control(BSMC).In BSMC,generator torque is considered as the control input that depends on the optimal rotor speed.Usually,this optimal rotor speed is derived from effective wind speed.In this paper,effective wind speed is estimated from aerodynamic torque and rotor speed by using the modified Newton Rapshon(MNR)algorithm.Initially,a conventional sliding mode controller(SMC)is applied to the WT,but the performance of the controller was found to be less robust with respect to disturbances.Generally,WT external disturbance is not predictable.To overcome the above drawback,BSMC is proposed and both the controllers are tested with mathematical model and finally validated with the fatigue,aerodynamics,structures,and turbulence(FAST)WT simulator in the presence of disturbances.From the results,it is concluded that the proposed BSMC is more robust than conventional SMC in the presence of disturbances. | Saravanakumar RAJENDRAN Debashisha JENA | 2015 | Journal of Modern Power Systems and Clean Energy2015，3，3： | 3 |
| 4 | Photocatalytic degradation of environmental perilous gentian violet dye using leucaena-mediated zinc oxide nanoparticle and its anticancer activity显示文摘Phytomediated synthesis of metal oxide nanoparticles has become a key research area in nanotech no logy due to its wide applicability in various biomedical fields. The present work explores the biosynthesis of zinc oxide nanoparticles (ZnO-NPs) using Leucaena leucocephala leaf extract. The synthesised ZnO-NPs were characterised by ultraviolet-visible (UV-Vis) spectroscopy, seanning electron microscopy (SEM), energydispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FTIR). X-ray diffraction (XRD), transmission electron microscopy (TEM) and selected area electron diffraction (SAED) studies. Biosynthesised ZnONPs are found to have wurtzite hexagonal structure with particles distributed in the range of 50-200 nm as confirmed by TEM studies. The anticancer activity of ZnONPs against MCF-7 (breast cancer) and PC-3 (human prostate cancer) cell lines was evaluated using 3-(4, 5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. From the assay, biosynthesised ZnO-NPs have better cytotoxic activity on PC-3 cell lines than MCF- 7 cell lines. The in vitro cytotoxicity studies of biosynthesised ZnO-NPs against Dalton lymphoma ascites (DLA) cells reveal better “ntitunior activity of 92% inhibition with concentration of 200μg ·ml^-1 of ZnO-NPs, and as the concentration increases, the anticancer efficiency as well increases, and also, it has excellent photocatalytic activity to degrade crystal violet dye in aqueous solution after irradiation of 90 min. The result suggests that the green synthesis of ZnO-NPs could be easily recovered and reused several times without any significant loss of the catalytic activity. The advantage of this technique lies in its low cost, easily clinibable and non-use of toxic agents. | Krishnaswamy Kanagamani Pitchaipillai Muthukrishnan Karunamoorthy Saravanakumar Karikalan Shankar Ayyasami Kathiresan | 2019 | Rare Metals2019，38，4： | 2 |
| 5 | Benthic Macrofaunal Assemblage in the Arid Zone Mangroves of Gulf of Kachchh-Gujarat显示文摘The total benthic macrofauna consisting of 62 species in 5 groups,viz. crustaceans(18),gastropods(17),bivalves(16),polychaetes(9) and fishes(2),was recorded in western Kachchh mangroves near Gujarat. The population densities of benthic macro-fauna ranged from 424 to 2393 ind.m-2,the diversity ranged from 1.84 to 2.45 bits ind.-1,the richness varied between 0.82 and 0.98,and the evenness varied between 0.64 and 0.81. Two maximum diversity values were recorded during winter and summer. The salin-ity ranged from 34 to 44,temperature varied between 17 and 37 ℃,and the acidity ranged from 7 to 8.9. | A. Saravanakumar J. Sesh Serebiah G. A. Thivakaran M. Rajkumar | 2007 | Journal of Ocean University of China2007，6，3： | 2 |
| 6 | Targeted delivery of low molecular drugs using chitosan and its derivatives 显示文摘 | Park J H Saravanakumar G Kim K | 2010 | Advanced Drug Delivery Reviews2010，62，1： | 1 |
| 7 | Modeling of COVID-19 disease disparity in gastric organoids reveals the spatiotemporal dynamics of SARS-CoV-2 infectivity显示文摘Dear Editor,The promptness and continuous expansion of the coronavirus disease 2019(COVID-19)pandemic,elicited by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)and its variants,has presented an unprecedented impact on human health(WHO Coronavirus(COVID-19)Dashboard,2021).Although vaccination has attenuated the severe symptoms,there is no specific antiviral medication available for preventing the viral spread(Drayman et al.,2021). | Wenwen Wang Fengrui Yang Jie Lin Saravanakumar Muthusamy Shihao Du McKay Mullen Fatima Garba Wanjuan Wang Xu Liu Tao Li Zhihong Yang Xia Ding Felix Aikhionbare Xinjiao Gao Zhikai Wang Xing Liu Xuebiao Yao | 2022 | Journal of Molecular Cell Biology2022，14，2： | 1 |
| 8 | Intravenous patient-controlled analgesia for labour: a survey of UK practice显示文摘 | SARAVANAKUMAR K GARSTANG J S HASAT K | 2007 | Int J Obstet Anesth2007，16，3： | 1 |
| 9 | Character-ization of protease from Alcaliger faecali and its antibacterial activity on fish pathogens显示文摘 | Annamalai N Kumar A Saravanakumar A | 2011 | J Environ Biol2011，32，6： | 1 |
| 10 | B-crystallin competes with Alzheimer's disease b-amyloid peptide for peptide-peptide interactions and induces oxidation of Abeta-Met35显示文摘 | Bram K Wilbert C | 2006 | FEBSL Letters2006，580，： | 1 |
| 11 | Targeted delivery of low molecular drugs using chitosan and its derivatives 显示文摘 | Park JH Saravanakumar G Kim K | 2010 | Adv Drug Deliv Rev2010，62，1： | 1 |
| 12 | Robust H_∞ control for uncertain Markovian jump systems with mixed delays显示文摘We scrutinize the problem of robust H∞control for a class of Markovian jump uncertain systems with interval timevarying and distributed delays. The Markovian jumping parameters are modeled as a continuous-time finite-state Markov chain. The main aim is to design a delay-dependent robust H∞control synthesis which ensures the mean-square asymptotic stability of the equilibrium point. By constructing a suitable Lyapunov–Krasovskii functional(LKF), sufficient conditions for delay-dependent robust H∞control criteria are obtained in terms of linear matrix inequalities(LMIs). The advantage of the proposed method is illustrated by numerical examples. The results are also compared with the existing results to show the less conservativeness. | R Saravanakumar M Syed Ali | 2016 | Chinese Physics B2016，25，7： | 1 |
| 13 | Vanillic acid prevents the deregulation of lipid metabolism, endothelin 1 and up regulation of endothelial nitric oxide synthase in nitric oxide deficient hypertensive rats显示文摘 | Subramanian Kumar Pichavaram Prahalathan Murugesan Saravanakumar Boobalan Raja | 2014 | European Journal of Pharmacology2014，，： | 1 |
| 14 | Photovoltaic properties of nanocrystalline CdS films deposited by SI LAR and CBD techniques a comparative study显示文摘 | Senthamilselvi V Saravanakumar K Begum N J | 2012 | Journal of Materials Science Materials in Electronics2012，23，1： | 1 |
| 15 | Targeted delivery of low molecular drugs using chitosanand its derivatives 显示文摘 | PARK J H SARAVANAKUMAR G KIM K | 2010 | Advanced Drug DeliveryReviews2010，62，1： | 1 |
| 16 | Isolation and partial characterization of antifungal protein from Bacillus polymyxa strain VLB 16 显示文摘 | SARAVANAKUMAR K SIVANESAN S SAMUEL G | 2005 | Process Biochemistry2005，40，： | 1 |
| 17 | Fishery Resources in Arid Zone Mangroves in Gulf of Kachchh, Gujarat, Northwest Coast of India显示文摘The finfish and shellfish resources were assessed quantitatively and qualitatively in regard to their abundance in creek waters at three sites within a period of two years, from January 1999 to December 2000, in the western mangrove areas of Kachchh. The catch rate varied from 0.69 to 6.99 kg h-1. It was low during monsoon (July to October), which could be due to the freshwater-flow-induced salinity reduction in all the sites. Among 38 species recorded, 5 were shellfish and 33 were finfish. The spawning period of fishes was found to be during summer and early monsoon period (May to August). Surface water temperatures varied from 17 ℃ to 37 ℃. Salinity values varied from 34 to 44 and the pH ranged between 7 and 8.9. Variation in dissolved oxygen content was from 3.42 to 5.85 mL L-1. The high fishery densities in these semi arid mangrove creek areas were recorded during monsoon and early winter season. | A. Saravanakumar M. Rajkumar J. Sesh Serebiah G. A. Thivakaran | 2009 | Journal of Ocean University of China2009，8，3： | 1 |
| 18 | Targeted delivery of low molecular drugs using chitosan and its derivatives显示文摘 | PARK J H SARAVANAKUMAR G KIM K | 2010 | Advanced Drug Delivery Reviews2010，62，： | 1 |
| 19 | Rhizosphere and endophytic bacteria for induction of systemic resistance of banana plantlets against bunchy top virus显示文摘 | Kavino M Harish S Kumar N Saravanakumar D Damodaran T Soorianathasundaram K Samiyappan R | | 0，，05： | 1 |
| 20 | The antipro liferative activity of 3-deoxyanthocyanins extracted from red sorghum (Sorghum bicolor) bran through P(53) dependent and Bcl 2 gene expression in breast cancer cell line显示文摘 | Suganyadevi P Saravanakumar KM Mohandas S | 2013 | Life Sci2013，92，67： | 1 |
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