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Investigations on pool boiling critical heat flux, transient characteristics and bonding strength of heater wire with aqua based reduced graphene oxide nanofluids

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Chinese Journal of Chemical Engineering 2018年第3期26卷 445-454页

作者： R. Kamatchi G. kumaresan School of mechanical Engineering VIT University Vellore Institute of Technology 632014 Tamil Nadu India Department of mechanical Engineering Bannari Amman Institute of Technology Sathyamangalam 638401 Tamil Nadu India

In the present work, the pool boiling critical heat flux, transient heat transfer characteristics, and bonding strength of thin Ni-Cr wire with aqua based reduced graphene oxide(r GO) nanofluids are experimentally studied. Results indicate:(i) the critical heat flux(CHF) of 0.01, 0.05, 0.1, 0.2, and 0.3 g·L^(-1) concentrations of r GO-water nanofluids varies from 1.42 to 2.40 mW·m^(-2);(ii) the CHF remains same for the tested samples during transient heat transfer studies and(iii) a constant value of CHF upto 10 tests when the nanocoated Ni-Cr wire is tested with DI water and deterioration occurs beyond this which implies a chance of peel off of r GO layer below the critical coating thickness.

关键词： Reduced graphene oxide Pool boiling Nanoparticle deposition Transient characteristics

An improved delta-star switching scheme for reactive power saving in three-phase induction motors

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Frontiers in Energy 2014年第3期8卷 364-370页

作者： R RAJA, N. kumaresan m. SUBBIAH Department of Electrical and Electronics Engineering National Institute of Technology Tiruchirappalli Tamil Nadu 620015 India Department of Electrical and Electronics Engineering Rajalakshmi Engineering College Chennai 602105 India

It is proposed that a capacitor can be connected permanently across each phase winding of a three-phase induction motor along with the conventional delta-star switching, for further saving in VARh at reduced loads on the motor. The method of choosing a suitable value for the capacitor and the criteria to be adopted for calculating the power output at which the star to delta switching is to be made are also explained. The phase, 4-pole, 415 V, 50 Hz, 3 experimental results on a 3- 3 kW induction motor verify the advantages in adding the capacitor to the phase winding of the motor. Compared to using only a single delta connected stator winding or a delta-star switching, the advantages of the proposed addition of a capacitor, are also demonstrated through a case study conducted on a 400 V, 250 kW motor. Any further improvement in grid side power factor can be achieved by employing a static synchronous compensator （STATCOm） of reduced VAR rating.

关键词： delta-star switching induction motor powerfactor steady-state analysis

Laser irradiation effects and its possible mechanisms of action on spermatozoa functions in domestic animals

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Asian pacific Journal of Reproduction 2017年第3期6卷 97-103页

作者： Lone SA mohanty TK kumaresan A Bhakat m Artificial Breeding Research Centre ICAR-National Dairy Research InstituteKarnal132001HaryanaIndia Livestock Research Centre ICAR-National Dairy Research InstituteKarnal132001HaryanaIndia

This article presents a review pertains the laser irradiation effects and its possible mechanisms of action on spermatozoa functions in domestic animals. To improve artificial insemination, laser is sensitive and cost effective technique, when compared to other conventional methods. Laser may have both positive and negative effects on spermatozoa functions. Since the effects of light are mediated by reactive oxygen species, and the levels of these reactive oxygen species following irradiating spermatozoa with laser may be responsible for determining the effects of laser on sperm. Dose of laser may be regarded as of great significance and this dosage of laser may be responsible for determining its effects on spermatozoa. Optimum dosage of laser for improving seminal attributes may vary among various species and this need to be standardized in each of them. The beneficial effects include improving sperm livability, acrosomal integrity, hypo-osmotic swelling response, mitochondrial function and computer-aided sperm analysis parameters. The increase in cytochrome c oxidase activity, ATP levels and mitochondrial membrane potential, in laser irradiated cells may be responsible for enhanced sperm quality parameters. Improving fertility with laser irradiated spermatozoa has been reported in few species like boar and need to be elaborated in other species. In conclusion laser may be regarded as an easy, cheap and time saving technology for improving artificial insemination;in addition, laser may have various potential applications in the field of reproductive biotechnology as well as in livestock farms and veterinary polyclinics.

关键词： Laser Irradiation Spermatozoa Function mechanism

Studies on bioprospecting potential of a gastropod mollusc Cantharus tranquebaricus(Gmelin,1791)

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Asian Pacific Journal of Tropical Biomedicine 2012年第10期2卷 759-764页

作者： G Sarumathi m Arumugam S kumaresan T Balasubramanian Annamalai University Faculty of Marine SciencesCentre of Advanced Study in Marine Biology

Objective:To study the biological activities of the tissue extract of Cantharus tranquebaricus(***).methods:Crude extract of gastropod was tested for inhibition of bacterial *** assay was carried out by disc diffusion method and the activity was measured accordingly based on the inhibition zone around the disc impregnated with gastropod *** weight of the extract was determined by using *** coagulation,Fibrin plate assay and substrate SDS-PAGE were used to determine the effect of sample on plasma coagulation,fibrin(ogen)olytic and proteolytic;***:The maximum inhibition zone(10 mm)was observed against Vibrio cholera(***)and minimum inhibition zone(2 mm)was noticed against Proteus mirablis(***).The molecular weight was determined as *** tissue extract shows proteolytic activity above 48 ***-PAGE analysis of fibrinogen after incubation with the tissue extract showed fibrinogenolytic *** plasma coagulation assay *** tissue extract showed procoagulant property and it coagulated chicken plasma within 150 s,while control took 5 min to *** 9 HU hemolytic units were found against chicken blood and also exhibit high level of brine shrimp ***:This study suggests that *** could be used as potential source for isolating bioactive compounds,since it is explored first time and found with promising results.

关键词： Antimicrobial Proteolytic Fibrinolytic Hemolytic Brine shrimp lethality Cantharus tranquebaricus Plasma coagulation

Sperm dosage and site of insemination in relation to fertility in bovines

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Asian pacific Journal of Reproduction 2018年第1期7卷 1-5页

作者： Tushar Kumar mohanty Shabir Ahmad Lone kumaresan A Bhakat m Kumar R Rubina K Baithalu Ranjana Sinha Adil Rasool Paray Hanuman P Yadav Sangram K Sahu Ashok K mohanty Artificial Breeding Research Centre ICAR-National Dairy Research InstituteKarnal132001HaryanaIndia Livestock Research Center ICAR-National Dairy Research InstituteKarnal132001HaryanaIndia Animal Biotechnology Center ICAR-National Dairy Research InstituteKarnal132001HaryanaIndia

Low sperm numbers in artificial insemination (AI)-doses are being used widely to make the best use of high genetic value bulls as well as sex-sorted semen. Sperm concentration needed for AI to obtain reasonable fertility, taking genetic value of bull and numerous others components into consideration is one of the essential constituents for successful AI breeding program. However, low sperm concentrations in AI-doses lead to reducing post-thaw viability. The reduction in viability of low sperm doses may be affected by fresh semen volume, sperm number and seminal plasma level at final dilution. Reduction in quality and fertility of low sperm doses is one of the limitations for their use in successful AI programme. Sperm number per AI required to achieve optimum fertility is one of the main crucial things to AI industry, and numerous efforts have been made in this regard. Due to great variability among bulls, sperm number per AI could be a limiting factor in achieving acceptable fertility values. Fertility of low sperm doses may vary among bulls, and non-return rates (NRRs) with low sperm doses may be determined by fertility level of bull. On the basis of individual bulls, sperm numbers in AI doses needed to be adjusted to reduce the variations in NRRs among bulls. Utilizing high fertile bulls for low sperm doses with acceptable non-return rates (NRRs) may be a way to cover a large number of bovines under AI in countries like India. Deposition site within the uterine horn may alter non return rates following inseminations with low sperm doses. Following deep-uterine inseminations, acceptable pregnancies may be achieved with low sperm doses and even if ovulation side is unknown.

关键词： Sperm number Deposition site Fertility

Diversity of Sodium Transporter HKT1;5 in Genus Oryza

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Rice science 2022年第1期29卷 31-46,I0002-I0017页

作者： Shalini PULIPATI Suji SOmASUNDARAm Nitika RANA Kavitha kumaresan mohamed SHAFI Peter CIVÁŇ Gothandapani SELLAmUTHU Deepa JAGANATHAN Prasanna Venkatesan RAmARAVI S.PUNITHA Kalaimani RAJU Shrikant S.mANTRI R.SOWDHAmINI Ajay PARIDA Gayatri VENKATARAmAN m.S.Swaminathan Research Foundation Chennai 600113India National Agri-Food Biotechnology Institute Punjab 140306India Krishi Vigyan Kendra Kanyakumari 629901India National Centre for Biological Sciences/Tata Institute of Fundamental Research Bangalore 560065India National Research Institute for Agriculture Food and Environment UniversityClermont-AuvergneClermont-Ferrand 63000France Forest molecular Entomology Laboratory Faculty of Forestry and Wood SciencesCzech University of Life SciencesPraguePraha 16500Czech Republic Tamil Nadu Agricultural University Coimbatore 641003India International Business machines India Chennai 600125India Institute of Life Sciences Bhubaneswar 751023India

Asian cultivated rice shows allelic variation in sodium transporter,OsHKT1;5,correlating with shoot sodium exclusion(salinity tolerance).These changes map to intra/extracellularly-oriented loops that occur between four transmembrane-P loop-transmembrane(mPm)motifs in OsHKT1;***1;5 sequences from more recently evolved Oryza species(***/*** complex species)contain two expansions that involve two intracellularly oriented loops/helical regions between mPm domains,potentially governing transport characteristics,while more ancestral HKT1;5 sequences have shorter intracellular *** compared homology models for homoeologous OcHKT 1;5-K and OcHKT1;5-L from halophytic *** to identify complementary amino acid residues in OcHKT1;5-L that potentially enhance affinity for Na+.Using haplotyping,we showed that Asian cultivated rice accessions only have a fraction of HKT1;5 diversity available in progenitor wild rice species(*** and ***).Progenitor HKT1;5 haplotypes can thus be used as novel potential donors for enhancing cultivated rice salinity *** Asian rice accessions,10 non-synonymous HKT1;5 haplotypic groups *** HKT1;5 haplotypic diversities occur in cultivated indica gene pool compared to *** Haplotypes 2 and 10 occur in mutually exclusive japonica and indica groups,corresponding to haplotypes in *** salt-sensitive and salt-tolerant landraces,*** distinct haplotype partitioning may have originated in separate ancestral gene pools of indica and japonica,or from different haplotypes selected during *** of specific HKT1;5 haplotypes within the 3000 rice dataset may relate to eco-physiological fitness in specific geo-climatic and/or edaphic contexts.

关键词： HKT1 5 diversity single nucleotide polymorphism haplotype bacterial artificial chromosome salinity tolerance sodium transporter Oryza species