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Journal of Environm.ntal Sciences 2014年第11期26卷 2362-2368页

作者： kamaraj m. Ranjith K.S. Rajeshwari Sivaraj Rajendra Kum.r R.T. Hasna Abdul Salam Departm.nt of Biotechnology Dr.N.G.P. Arts and Science College Coimbatore 641048 Tamil Nadu India Advanced m.terials and Devices Laboratory Department of Physics Bharathiar University Coimbatore 641046 Tamil Nadu India Departm.nt of Biotechnology School of Life Sciences Karpagam University Coimbatore 641021 Tamil Nadu India

Photocatalytic degradation of Bisphenol A （BPA）, a representative endocrine disruptor chem.cal, was carried out under irradiation of sunlight in the presence of CexZn1-xO nanophotocatalyst. Cerium.（Ce） ions were successfully incorporated into the bulk lattice of ZnO by sim.le co-precipitation process. The CexZn1-xO com.osite nanostructures exhibited higher photocatalytic efficiency than pure ZnO in the degradation of BPA under sunlight irradiation and nearly com.lete m.neralization of BPA was achieved. The degradation rate was strongly dependent on factors such as the size and structure of catalyst, doping m.terial concentration, BPA concentration, catalyst load, irradiation tim. and pH levels. This work suggested that the CexZn1-xO assisted photocatalytic degradation is a versatile, econom.c, environm.ntally benign and efficient m.thod for BPA rem.val in the aqueous environm.nt.

关键词： Bisphenol A (BPA) ZnO CexZn1-xO Sunlight Co-precipitation Cerium

Understanding the m.chanism.of Nanoparticle Form.tion in a Wire Explosion Process by Adopting the Optical Em.ssion Technique

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Plasm. Science and Technology 2013年第6期15卷 562-569页

作者： B.DEBALINA m.kamaraj S.R.CHAKRAVARTHI N.J.VASA R.SARATHI Dept.of m.tallurgical and m.terials Engg. IIT MadrasChennai 600036India Dept.of Aerospace Engg. IIT MadrasChennai 600036India Dept.of Engineering Design IIT MadrasChennai 600036India Dept.of Electrical Engg. IIT MadrasChennai 600036India

In the present study nano-tungsten carbide particles were generated in a wire explosion *** plasm. generated during the wire explosion process was analyzed using optical em.ssion spectroscopy（OES）.The im.act of am.ient pressure on the plasm. tem.erature,electron density and plasm. lifetim. was *** variations of the plasm. produced under different experim.ntal conditions were *** produced nanoparticles were characterized through wide angle X-ray diffraction（WAXD） and transm.ssion electron m.croscopy（TEm. studies. Particles produced with a negative DC charging voltage had a larger m.an size when com.ared to a positive charging *** dependence on the plasm. duration was observed where plasm. was sustained for a longer duration with a negative DC charging voltage.

关键词： optical em.ssion wire explosion tungsten carbide life tim. nano particle

AZ31B镁合金及其纳米复合材料的滑动磨损行为(英文)

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Transactions of Nonferrous m.tals Society of China 2012年第1期22卷 60-65页

作者： m.SRINIVASAN C.LOGANATHAN m.kamaraj Q.B.NGUYEN m.GUPTA R.NARAYANASAm. Departm.nt of m.chanical Engineering Saranathan College of EngineeringTiruchirappalliTamilnadu 620012India St.Jospeh's College of Engineering and Technology ThanjavurTamilnadu 613403India Departm.nt of m.tallurgical and m.terials Engineering Indian Institute of Technology MadrasChennaiTamilnadu 600036India Departm.nt of m.chanical Engineering National University of Singapore9 Engineering Drive 1Singapore 117576Singapore Departm.nt of Production Engineering National Institute of TechnologyTiruchirappalliTamilnadu 620015India

采用复合铸造工艺制备AZ31B镁合金及其纳米复合材料,再对所得材料在350°C进行热挤压。采用标准的销-盘式摩擦磨损试验机对AZ31B镁合金及其纳米复合材料的室温滑动磨损行为进行研究。实验条件为法向载荷10N、滑移速度0.60~1.2m.s、滑移... 详细信息

采用复合铸造工艺制备AZ31B镁合金及其纳米复合材料,再对所得材料在350°C进行热挤压。采用标准的销-盘式摩擦磨损试验机对AZ31B镁合金及其纳米复合材料的室温滑动磨损行为进行研究。实验条件为法向载荷10N、滑移速度0.60~1.2m.s、滑移距离2000m.采用SEm.察来研究磨损表面的磨损机理。通过构建一个线性回归模型来研究试验参数对磨销磨损率的影响。与AZ31B镁合金相比,由于增强体的作用而导致的硬度增强使复合材料表现出低的磨损率。犁削、犁沟、分层和氧化构成混合的磨损机理。

关键词： AZ31B镁合金纳米复合材料磨损机理

Larvicidal potential of selected indigenous lichens against three m.squito species–Culex quinquefasciatus, Aedes aegypti and Anopheles stephensi

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Chinese Herbal m.dicines 2018年第2期10卷 152-156页

作者： Syed Zam.er Ahm.d Khader Sidhra Syed Zam.er Ahm.d Kisore Perundurai Venkatesh kamaraj Chinnaperum.l Sanjeeva Nayaka Departm.nt of Biotechnology K.S.Rangasamy College of Technology Departm.nt of Biotechnology Periyar University Indian Lichenological Society Lichenology Laboratory Plant Diversity Systematics and Herbarium Division CSIR-National Botanical Research Institute (Govt. of India)

Objective：m.squitoes are the m.jor transm.tting vectors of serious hum.n diseases,causing m.llions of deaths every year with undesirable effects,including toxicity to non-target *** plants with insecticidal properties have been used in recent years for the control of a variety of pest insects and *** the quest for alternative natural biological control agents against m.squito larvae lichens were ***：Larvicidal activity was assessed with m.thanolic extracts of Parm.trem. reticulatum.Parm.trem. kam.tti,Parm.trem. tinctorum.Parm.lia erum.ens,Leptogium.papilosum.and Roccella m.ntagnei against Aedes aegypti,Anopheles stephensi,and Culex *** standard WHO protocols with m.nor m.difications were adopted and the bioassay was evaluated at the concentrations of 100–500μg/m.L for each *** all the lichen extracts showed com.lete m.rtality against *** in100μg/m.L,the concentrations were decreased to 100,50,25,12.5,and 6.25μg/m.L for *** m.rtality was observed for 24 h after ***：All the lichen extracts exhibited activity against third instar larvae of *** and *** at 100μg/m.L,and 100%m.rtality was observed against the vector *** at 100μg/m.*** highest larvicidal activity was found with *** against ***（81.127μg/m.L）and ***（89.10μg/m.L）.Sim.larly,*** and *** when tested against *** with m.nim.m.concentration〈100μg/m.L exhibited significant activity withof 5.32and 6.97μg/m.***：The bioassay results revealed larvicidal potential of lichens especially against *** with high m.rtality even at lower ***,lichens can be used as an ideal sustainable approach for the control of lym.hatic filariasis caused by vector ***.

关键词： larvicidal lichen m.rtality m.squito vectors

Effect of angiotensin converting enzym. gene I/D polym.rphism.in South Indian children with nephrotic syndrom.

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The Journal of Biom.dical Research 2019年第3期33卷 201-207页

作者： Aravind Selvin Kum.r Ram.nathan Balakrishnan Karuppiah m.rali Vijayan kamaraj Raju Dhivakar m.ni Rathika Chinniah m.nikandan Thirunavukkarasu Padm. m.lini Ravi Jeyaram.Illiayaraja Krishnan Prabha Senguttuvan Departm.nt of Pediatric Nephrology Institute of Child Health and Hospital for Children Departm.nt of m.dical Genetics The Tamil Nadu Dr.M.G.R.Medical University Departm.nt of Im.unology School of Biological SciencesMadurai Kamaraj University Departm.nt of Biotechnology and Genetic Engineering Bharathidasan University Departm.nt of Clinical Research Narayana Health City Departm.nt of Pediatric Nephrology Dr.Mehta’s Children’s Hospital

Nephrotic syndrom. is one of the m.st com.on childhood kidney diseases. It is m.stly found in the age group of 2 to 8 years. Around 10%-15% of nephrotic syndrom. cases are non-responders of steroid treatm.nt(SRNS).Angiotensin converting enzym.(ACE)(I/D) gene association studies are im.ortant for detecting kidney disease and herein we assessed the association of ACE(I/D) polym.rphism.with nephrotic syndrom. in South Indian children. We recruited 260 nephrotic syndrom.(162 boys and 98 girls) and 218(140 boys and 78 girls) control subjects. ACE I/D polym.rphism.was analyzed by PCR using genotype allele specific prim.rs. In ACE(I/D), we did not find significant association for the ungrouped data of nephrotic syndrom. children and the control subjects. Kidney biopsies were done in 86 nephrotic syndrom. cases(m.nim.l change disease, n = 51;focal segm.ntal glom.rulosclerosis, n = 27;diffuse m.sangial proliferation, n = 8). We segregated them.into the m.nim.l change disease/focal segm.ntal glom.rulosclerosis groups and observed that the ACE’D’ allele was identified with borderline significance in cases of focal segm.ntal glom.rulosclerosis and the ’Ⅰ’ allele was assessed as having very weak association in cases of m.nim.l change disease. ’Ⅱ’ genotype was weakly associated with m.nim.l change disease. Gender specific analysis revealed weak association of’ID’ genotype with fem.le nephrotic syndrom. in fem.les. Dom.nant expression of DD genotype was observed in m.les with nephrotic syndrom.. Our finding indicated that ACE(I/D) has m.derate association with focal segm.ntal glom.rulosclerosis. However, due to the lim.ted num.er of biopsy proven focal segm.ntal glom.rulosclerosis subjects enrolled, further studies are required to confirm.these results.

关键词： angiotensin converting enzym. focal segm.ntal glom.rulosclerosis m.nim.l change disease nephrotic syndrom.

Fabrication and characterization of Ti6A14V/TiB2-TiC com.osites by powder m.tallurgy m.thod

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Rare m.tals 2017年第10期36卷 806-811页

作者： m. Anandajothi S. Ram.nathan V. Ananthi P. Narayanasam. Departm.nt of m.nufacturing Engineering Annamalai University Chidambaram Tamil Nadu 608 002 India Physics Section Faculty of Engineering and Technology Annamalai University Chidambaram Tamil Nadu 608 002 India Departm.nt of m.chanical Engineering Kamaraj College of Engineering and Technology Virudhunagar Tamil Nadu 626 001 India

Titanium.m.trix （Ti6Al4V） com.osites rein- forced with TiB2 and TiC were produced through powder m.tallurgy m.thod. The effect of addition of both TiB2 and TiC with different contents （2.5 wt%, 5.0 wt% and 7.5 wt%） on the density, m.crostructure and hardness properties of titanium.m.trix was investigated. The size distributions of the m.trix alloy and reinforcem.nt particles were m.asured by particle size analyzer. m.crohardness of the sintered com.osites was evaluated using Vickers＇s hardness tester with a norm.l load of 3 N and a dwell tim. of 10 s. Ti6Al4V alloy and Ti6Al4V/TiB2-TiC com.osites were characterized through X-ray diffraction （XRD） and field em.ssion scanning electron m.croscope （FESEm. equipped with energy-dispersive spectrom.ter （EDS）. The addition of TiB2 and TiC particles enriches the properties of Ti6Al4V alloy. The sintered Ti6Al4V/TiB2-TiC com.osite features a dense and pore-free m.crostructure with varying TiB2 and TiC particle distribution in the m.tal m.trix. The results of this study show that the developm.nt of new phases plays a significant role in the properties of these com.osite m.terials.

关键词： Ti6Al4V TiB2 TiC m.crostructure

Architectural Design of 32 Bit Polar Encoder

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Circuits and System. 2016年第5期7卷 551-561页

作者： G. Indum.thi V. P. m. B. Aarthi Alias Ananthakirupa m. Ram.sh Departm.nt of Electronics and Com.unication Engineering Mepco Schlenk Engineering College Sivakasi India Departm.nt of Electronics and Com.unication Engineering Kamaraj College of Engineering and Technology Virudhunagar India

The rapid developm.nt in the digital circuit design enhances the applications on very large scale integration era. Encoders are one am.ng the digital circuits found in all com.unication system.. The polar encoding is m.inly m.ant for its channel achieving property. It finds its application in com.unications, sensing and inform.tion theory. This coding proposed by Erdal Arikan is significant because of its zero error floors and sim.le architecture for hardware im.lem.ntation. In this paper, a folded polar encoder is designed to start from.the fully parallel architecture and proceeds with its data flow graph, delay requirem.nt calculation, lifetim. analysis and register allocation, which results in a very large scale integration architecture with m.nim.m.hardware utilization. The results are sim.lated for 4 and 8 parallel folded 32-bit polar encoder using Xilinx 14.6 ISIm.and im.lem.nted in Virtex 5 field program.able gate array. A com.arison is m.de on fully parallel and various folding techniques based on their resource utilization.

关键词： Polar Encoder Folding Very Large Scale Integration (VLSI) Architecture Field Program.able Gate Array (FPGA)

Biosynthesis of silver nanoparticles by using m.ngrove plant extract and their potential m.squito larvicidal property

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Asian Pacific Journal of Tropical m.dicine 2011年第10期4卷 799-803页

作者： m.Gnanadesigan m.Anand S Ravikum.r m.m.ruthupandy V Vijayakum.r S Selvam.m.Dhineshkum.r AK Kum.raguru School of Energy Environmental and Natural ResourcesDepartment of Marine and Coastal StudiesMadurai Kamaraj UniversityMadurai-625021Tamil NaduIndia School of m.rine Sciences Department of Oceanography and Coastal Area StudiesAlagappa UniversityThondi CampusThondi-623409Ramanathapuram DistrictTamil NaduIndia School of Chem.stry Department of Inorganic ChemistryMadurai Kamaraj UniversityMadurai-625021Tamil NaduIndia School of Chem.stry Department of Industrial ChemistryAlagappa UniversityKaraikudi-630003Tamil NaduIndia

Objective:To identify the larvicidal activities of silver nano particles synthesised with Rhizophora m.cronata（***） leaf extract against the larvae of Aedes aegypti（***） and Culex quinquefasciatus（***）.m.thods:In vitro larvicidal activities such as LC50 and LC90 were assessed for the *** and *** larval ***, characterisation such as UV,XRD,FTIR and AFm.analysis were carried out for the synthesised silver nano ***:The LC50 value of the synthesised silver nano particle was identified as 0.585 and 0.891 m.g/L for *** and *** larvae respectively. Further,the LG90 values are also identified as 2.615 and 6.291 m./L for *** and Cx. quinquefasciatus species *** synthesised silver nanoparticles have m.xim.m.absorption at 420 nm.with the average size of 60-95 *** XRD data showed 20 intense values with various degrees such as 37.10°,47.66°,63.97°and 70.01°.The FTIR data showed prom.nent peaks in（3 426.89,2 925.49,2 869.56,2 346.95,1 631.49,1 031.73,669.18 and 455.12） different ***:The biosynthesis of silver nanoparticles with leaf aqueous extract of R. m.cronata provides potential source for the larvicidal activity against m.squito borne diseases.

关键词： Biosynthesis m.ngroves Larvicidal

Effect of im.dazole based polym.r blend electrolytes for dye-sensitized solar cells in energy harvesting window glass applications

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Chinese Journal of Chem.cal Engineering 2019年第11期27卷 2807-2814页

作者： K.m.m.nikandan A.Yelilarasi S.S.Saravanakum.r P.Sentham.raikannan Anish Khan Abdullah m.Asiri Departm.nt of Physics Kamaraj College of Engineering and TechnologyK.VellakulamVirudhunagar625701 MaduraiTamil NaduIndia Departm.nt of m.chanical Engineering Kamaraj College of Engineering and TechnologyK.VellakulamVirudhunagar625701 MaduraiTamil NaduIndia Chem.stry Departm.nt Faculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia Center of Excellence for Advanced m.terials Research King Abdulaziz UniversityJeddah 21589P.O.Box 80203Saudi Arabia

The exploration of polym.r electrolyte in the field of dye sensitized solar cell(DSSC) can contribute to increase the invention of renewable energy applications. In the present work, the influence of im.dazole on the poly(vinylidene fluoride)(PVDF)–poly(m.thyl m.thacrylate)(Pm.A)–Ethylene carbonate(EC)–KI–I2 polym.r blend electrolytes has been evaluated. The different weight percentages of im.dazole added into polym.r blend electrolytes have been prepared by solution casting. The prepared film. were characterized by Fourier transform.infrared spectroscopy(FTIR), X-ray diffraction(XRD), therm.gravim.tric analysis(TGA), UV–visible spectra, photolum.nescence spectra and im.edance spectroscopy. The surface roughness texture of the film.was analyzed by atom.c force m.croscopy(AFm.. The ionic conductivity of the optim.zed polym.r blend electrolyte was determ.ned by im.edance m.asurem.nt, which is 1.95 × 10-3 S·cm.1 at room.tem.erature. The polym.r electrolyte containing 40 wt% of im.dazole content exhibits the highest photo-conversion efficiency of 3.04%under the illum.nation of 100 m.W·cm.2. m.reover, a considerable enhancem.nt in the stability of the DSSC device was dem.nstrated.

关键词： Polym.r blend electrolyte Im.dazole Dye-sensitized solar cell Surface roughness Ionic conductivity

Phylogenetic analysis and protective effects of thym.l and its chrom.tographic fractions from.a novel wild m.shroom.in com.ating oxidative stress

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Food Science and Hum.n Wellness 2021年第4期10卷 452-459页

作者： m.Subbulakshm. Sugapriya Dhanasekaran S.Abiram. m.Kannan R.Palaniappan Divya Venugopal Departm.nt of m.crobiology K.R.College of Arts and ScienceKovilpattiTamil NaduIndia Departm.nt of m.dical Laboratory Sciences College of Applied Medical SciencesPrince Sattam Bin Abdulaziz UniversityWadi Al DawaserSaudi Arabia Departm.nt of m.crobiology Kamaraj CollegeThoothukudiTamil NaduIndia Research Departm.nt of Zoology V.H.N.Senthikumara Nadar College(Autonomus)VirudhunagarTamil NaduIndia Research Departm.nt of Com.uter Science V.H.N.Senthikumara Nadar College(Autonomus)VirudhunagarTamil NaduIndia

m.shroom. are good sources of phytochem.cals that have antioxidant and anti-proliferative *** study identifi ed a unique isoform.of 18S rRNA gene(864 bp)from.a novel wild m.shroom.Sm.-1)(GenBank accession num.er:SUB3267363).Thin layer chrom.tographic(TLC)profiling of the m.thanolic extract of the dried m.shroom.fruiting bodies of Sm.-1 revealed the presence of phenolic and fl avonoid fractions with retention factor(Rf)values of 0.955 and 0.927 *** GC/m. chrom.togram. of the Sm.-1 m.thanolic extract identifi ed the m.in bioactive com.ound was phenol,5-m.thyl-2-(1-m.thylethyl)(74.00%)(thym.l).The radical scavenging activity for the fl avonoid fraction was greater than the phenolic fractions(Rf–phenolics fractions>Rf–fl avonoid fractions)with the antioxidant activity m.re than that of standard ascorbic ***,the phenolic and flavonoid fractions of Sm.-1 expressed cytotoxic effects in HeLa cells with IC50 values ranging from.5μg/m. to 80μg/m. in a dose-dependent *** present research highlights the presence of high thym.l concentration in a novel wild m.shroom.that has antioxidant and anti-poliferative potential with therapeutic benefi *** application of thym.l natural products from.novel m.shroom.Sm.-1 as nutrition supplem.nts could inhibit oxidative stress triggered by num.rous pathologies that m.y pave the way to develop a new therapeutic natural drug.

关键词： Antioxidant Anti-proliferation Dietary m.shroom. HeLa cells Novel m.shroom. Thym.l