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Asian pacific Journal of Reproduction 2020年第5期9卷 247-255页

作者： Pradeep Nag Ankur Sharma Elango Kamaraj arumugam kumaresan Tirtha Kumar Datta Ayyasamy Manimaran Nilendu Paul Sakthivel Jeyakumar Kerekoppa P.Ramesha Theriogenology Laboratory Veterinary Gynaecologyand ObstetricsSouthern Regional Station of ICAR-National Dairy Research InstituteBengaluru–560030 KarnatakaIndia Animal Genomics Laboratory ICAR-National Dairy Research InstituteKarnal–132001 HaryanaIndia Southern Regional Station of ICAR-National Dairy Research Institute Bengaluru–560030 KarnatakaIndia

Objective:To assess the stability of 10 candidate internal control genes(ICGs),namely GAPDH,ACTB,RPL23,RPS15A,ATPSF1,GLUT5,HMBS,ATP2B4,PPIA,and BRP to normalize the transcriptional data from testes samples of Zebu and crossbred ***:Total RNA was isolated from testicular tissue of Zebu and crossbred bulls(n=6 each)between 2-8 years of *** was synthesized,and the quantitative real-time polymerase chain reaction(PCR)was *** cycle threshold values were used for the analysis of the stability of *** different statistical algorithms:geNorm,Normfinder,BestKeeper,and RefFinder,were used to assess the stability of these ***:ATPSF1,HMBS,PPIA,and RPS15A were the most reliable and stable ICGs for Zebu testes,and ATPSF1,RPL23,and PPIA for crossbred ***:A panel of stable ICGs(ATPSF1,HMBS,PPIA,RPS15A for Zebu and ATPSF1,RPL23,and PPIA for crossbred)for normalization of gene expression data in testes samples can be helpful for researchers to conduct functional genomics studies at the testicular level in cattle bulls.

关键词： Cattle bulls Gene expression Internal control genes Normalization qPCR Testis

A novel manganese tungstate nanorod catalyst for the oxidation of styrene with tert-butyl hydroperoxide as oxidant

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Tungsten 2024年第4期6卷 845-858页

作者： Shanmugam Manimaran arumugam Pandurangan Gopalakrishnan Govindasamy Department of Chemistry Anna University Energy Cluster School of Engineering University of Petroleum and Energy Studies (UPES)

Catalyst,solvent and process parameters are the keys for the selective oxidation of styrene and other olefins to value added *** MnWO4was synthesized by the one-pot hydrothermal method using Pluronic F127 as a surfactant,characterized and evaluated for the oxidation of styrene and different olefins,using tert-butyl hydroperoxide（TBHP） as oxidant.X-ray diffractogram confirmed the phase purity of MnWO4which became further evident from the near surface equimolar proposition of Mn and W in+2 and+6 oxidation states,respectively,as inferred from X-ray photoelectron spectra.N2sorption followed type Ⅳa isotherm with H3 hysteresis loop,starting at the relative pressure（P/P_o） of 0.9,typically of mesoporous materials containing macropores as further confirmed by pore-size *** electron microscope images of MnWO4revealed its nanorod *** the absence of catalyst,styrene conversion was 35%with benzaldehyde as the sole product and addition of 75 g of MnWO4increased the styrene conversion to 97.3%,and the styrene oxide selectivity from 0% to 85% demonstrated its activity and *** the maximum conversion and styrene oxide selectivity optimum temperature,styrene:TBHP molar ratio,catalyst amount and solvent were found to be 70 ℃,1:2,75 mg,and acetonitrile,***4catalyst retained its activity and selectivity for five recycles,confirming its recoverability and *** the kinetic studies,pre-exponential factor and apparent activation energy were found to be 0.206 s-1and 31.5 kJ·mol-1,respectively,and a reaction mechanism was ***4catalyst was active for oxidation of alkenes,cycloolefins and alkenyl aromatics with high selectivity for epoxides.

关键词： Epoxidation Manganese tungstate nanorod Styrene oxidation

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

Annealing-induced long-range charge density wave order in magnetic kagome FeGe:Fluctuations and disordered structure

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Science China(Physics,Mechanics & Astronomy) 2024年第11期67卷 112-121页

作者： Chenfei Shi Yi Liu Bishal Baran Maity Qi Wang Surya Rohith Kotla Sitaram Ramakrishnan Claudio Eisele Harshit Agarwal Leila Noohinejad Qian Tao Baojuan Kang Zhefeng Lou Xiaohui Yang Yanpeng Qi Xiao Lin Zhu-An Xu arumugam Thamizhavel Guang-Han Cao Sander Van Smaalen Shixun Cao Jin-Ke Bao Department of Physics Materials Genome InstituteInstitute for Quantum Science and TechnologyShanghai UniversityShanghai 200444China Key Laboratory of Quantum Precision Measurement of Zhejiang Province School of PhysicsZhejiang University of TechnologyHangzhou 310023China School of Physics Zhejiang UniversityHangzhou 310027China Department of Condensed Matter Physics and Materials Science Tata Institute of Fundamental ResearchMumbai 400005India School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China ShanghaiTech Laboratory for Topological Physics ShanghaiTech UniversityShanghai 201210China Laboratory of Crystallography University of BayreuthBayreuth 95447Germany Department of Quantum Matter AdSEHiroshima UniversityHigashi-Hiroshima 739-8530Japan P24 PETRA IIIDeutsches Elektronen-Synchrotron DESYHamburg 22607Germany Key Laboratory for Quantum Materials of Zhejiang Province School of ScienceWestlake UniversityHangzhou 310024China Department of Physics China Jiliang UniversityHangzhou 310018China Shanghai Key Laboratory of High-resolution Electron Microscopy ShanghaiTech UniversityShanghai 201210China Collaborative Innovation Centre of Advanced Microstructures Nanjing UniversityNanjing 210093China Shanghai Key Laboratory of High Temperature Superconductors Shanghai UniversityShanghai 200444China School of Physics Hangzhou Normal UniversityHangzhou 311121China

Charge density wave(CDW) in kagome materials with the geometric frustration is able to carry unconventional ***, a CDW has been observed below the antiferromagnetic order in kagome FeGe, in which magnetism and CDW are intertwined to form an emergent quantum ground state. However, the CDW is only short-ranged and the structural modulation originating from it has yet to be determined experimentally. Here we realize a long-range CDW order by post-annealing process,and resolve the structure model through single crystal X-ray diffraction. Occupational disorder of Ge resulting from short-range CDW correlations above T_(CDW) is identified from structure refinements. The partial dimerization of Ge along the c axis is unveiled to be the dominant distortion for the CDW. Occupational disorder of Ge is also proved to exist in the CDW phase due to the random selection of partially dimerized Ge sites. Our work provides useful insights for understanding the unconventional nature of the CDW in FeGe.

关键词： charge density wave kagome disordered structure fluctuations

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2,5-Dimercapto-1,3,4-Thiadiazole(DMCT)-Based Polymers for Rechargeable Metal-Sulfur Batteries

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Energy & Environmental Materials 2023年第6期6卷 283-290页

作者： Amruth Bhargav arumugam Manthiram Materials Science and Engineering Program&Texas Materials Institute The University of Texas at AustinAustin Texas 78712USA

Organosulfur materials are a sustainable alternative to the present-day layered oxide cathodes in lithium-based *** such organosulfur material that was intensely explored from the 1990s to early 2010s is 2,5-dimercapto-1,3,4-thiadiazole(DMCT).However,research interest declined as the electrode reactions with DMCT were assumed to be too sluggish to be *** with the advances in metal-sulfur batteries,we revisit DMCT-based materials in the form of poly[tetrathio-2,5-(1,3,4-thiadiazole)],referred to as *** an appropriate choice of electrode design and electrolyte,pDMCT-S cathode paired with a Li-metal anode shows a capacity of 715 mA h g^(-1)and a Coulombic efficiency of 97.7%at a C/10 rate,thus quelling the concerns of sluggish ***,pDMCT-S shows significantly improved long-term cyclability compared to a sulfur *** into the origin of the stability reveals that the discharge product Li-DMCT in its mesomeric form can strongly bind to polysulfides,preventing their dissolution into the electrolyte and *** unique mechanism solves a critical problem faced by sulfur ***,this mechanism results in a stable performance of pDMCT-S with Na-metal cells as *** study opens the potential for exploring other organic materials that have inherent polysulfide sequestering capabilities,enabling long-life metal-sulfur batteries.

关键词： 2,5-dimercapto-1,3,4-thiadiazole electrochemistry metal-sulfur batteries organopolysulfide organosulfur batteries

Growth response of Pterocarpus santalinus seedlings to native microbial symbionts(arbuscular mycorrhizal fungi and Rhizobium aegyptiacum)under nursery conditions

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Journal of Forestry Research 2021年第1期32卷 225-231页

作者： arumugam Karthikeyan Thangavel Arunprasad Institute of Forest Genetics and Tree Breeding Coimbatore 641002India

The objective of this research was to improve the growth and biomass of Pterocarpus santalinus L.f.(an endangered leguminous tree)using native microbial symbionts such as arbuscular mycorrhizal fungi and Rhizobium associated with native populations of *** native arbuscular mycorrhizal fungi isolated from *** soils were identifi ed as(1)Glomus fasciculatum;(2)Glomus geosporum;and Glomus aggregatum.A nitrogenfi xing microbial symbiont was isolated from the root nodules of *** and identifi ed as Rhizobium aegyptiacum by 16s rRNA gene *** microbial symbionts were inoculated individually and in combination into *** seedling *** 90 days,growth and biomass had improved compared with uninoculated *** and root lengths,number of leaves,stem circumference,number of root nodules,biomass,nutrient uptake and seedling quality index were signifi cantly increased by a combined inoculation of arbuscular mycorrhizal fungi+Rhizobium *** was concluded that native microbial symbionts positively infl uenced *** seedling growth which will be helpful for successful fi eld establishment.

关键词： Arbuscular mycorrhizal fungi Microbial symbionts Pterocarpus santalinus Red sanders Rhizobium aegyptiacum

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Scalable Membraneless Direct Liquid Fuel Cells Based on a Catalyst-Selective Strategy

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Energy & Environmental Materials 2018年第1期1卷 13-19页

作者： Xingwen Yu arumugam Manthiram Materials Science&Engineering Program and Texas Materials Institute The University of Texas at AustinAustinTX 78712USA

This perspective presents a membraneless direct liquid fuel cell(DLFC)concept based on a catalyst-selective *** membraneless DLFCs are operated at low temperatures by employing a non-precious cathode catalyst with a high catalytic *** uniqueness is that the inexpensive cathode catalyst only catalyzes the oxygen reduction reaction but does not catalyze the oxidation reaction of a specific ***,during the operation of DLFCs,the liquid fuel can enter the cathode freely without any concern of fuel *** catalyst-selective approach tactfully avoids the use of high-cost or technically unviable ion-exchange polymer membranes in *** catalyst-selective operating principle also overcomes the scalability issue of the traditional laminar-flow membraneless *** a proper management of the anode and cathode catalysts in the cell,a variety of inexpensive,renewable alcohols,and small-molecule organics can be employed as anode *** innovative approach of membraneless alkaline DLFCs offers a great opportunity for the development of inexpensive energy-generation systems for both mobile and stationary *** addition to summarizing the principle and the research progress of the unique membraneless DLFC platform,the challenges and future research directions are presented.

关键词： catalyst uniqueness overcome

Transient Behavior of a Single-Server Markovian Queue with Balking and Working Vacation Interruptions

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Journal of the Operations Research Society of China 2021年第2期9卷 321-341页

作者： arumugam Azhagappan Thirunavukkarasu Deepa Department of Mathematics St.Anne’s College of Engineering and TechnologyAnna UniversityPanrutiTamilnadu 607110India Department of Mathematics Idhaya College of Arts and Science for WomenPondicherry UniversityPakkamudayanpetPuducherry 605008India

This paper studies the time-dependent analysis of an M/M/1 queueing model with single,multiple working vacation,balking and vacation *** the system becomes empty,the server commences working *** the working vacation period,if the queue length reaches a positive threshold value‘k’,the working vacation of the server is interrupted and it immediately starts the service in an exhaustive *** working vacations,the customers become discouraged due to the slow service and possess balking *** transient system size probabilities of the proposed model are derived explicitly using the method of generating function and continued *** performance indices such as average and variance of system size are also ***,numerical simulations are presented to analyze the impact of system parameters.

关键词： The M/M/1 queue Single and multiple working vacation Balking Vacation interruption Continued fractions Transient probabilities

Towards the low temperature growth of uniform diameter multi walled carbon nanotubes by catalytic chemical vapour deposition technique

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Nano-Micro Letters 2010年第3期2卷 204-212页

作者： Thirunavukkarasu Somanathan arumugam Pandurangan Department of Chemistry Anna University Chennai Department of Chemical Engineering University of Massachusetts

Mesoporous MCM-41 molecular sieves containing f-block transition elements（gadolinium） with various Si/Gd ratios（50,75 and 100） were synthesised by a hydrothermal *** mesoporous structure was confirmed by X-ray diffraction,nitrogen sorption studies,thermogravimetric analysis,scanning and transmission electron *** local environment of Gd in the material was studied by electron paramagnetic *** compatibility of the catalyst for the synthesis of uniform diameter CNTs by varying the temperature from 400 to 650°C with fixed flow rates of N2 and C2H2（140 ml/min and 40 ml/min,respectively）.The product is mostly metal containing thin MWCNTs with diameter of 1020 *** shows that a combination of Gd-MCM-41（100） catalyst gives a high yield of high quality MWCNTs under optimum growth conditions.

关键词： MWCNTs Gd carbon nanotubes Contrasting agents Magnetic resonance imaging

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Secured Vehicle Life Cycle Tracking Using Blockchain and Smart Contract

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Computer Systems Science & Engineering 2022年第4期41卷 1-18页

作者： Srinivasan Ananthanarayanan Bragadeesh arumugam Umamakeswari School of Computing SASTRA Deemed UniversityThanjavur613401India

Life Cycle Tracking(LCT)involves continuous monitoring and analy-sis of various activities associated with a *** crucial factor in the LCT is to ensure the validity of gathered data as numerous supply chain phases are involved and the data is assessed by multiple *** and swindling activities can be prevented if the history of the vehicles is made available to the interested *** provides a way of enforcing trustworthiness to the supply chain participants and the data associated with the various actions *** learning techniques when combined decentralized nature of blockchains can be used to develop a robust Vehicle LCT *** the proposed work,Harmonic Optimized Gradient Descent andŁukasiewicz Fuzzy(HOGD-LF)Vehicle Life Cycle Tracking in Cloud Environment is proposed and it involves three ***,the Progressive Harmonic Optimized User Registra-tion and Authentication model is designed for computationally efﬁcient registra-tion and ***,for the authentic user,the Gradient Descent Blockchain-based SVM Data Encryption model is designed with minimum CPU ***,Łukasiewicz Fuzzy Smart Contract Veriﬁcation is per-formed with encrypted data to ensure accurate and precise fraudulent activity *** experimental analysis shows that the proposed method achieves signiﬁcant performance in terms of life cycle’s prediction time,overhead,and accuracy for a different number of users.

关键词： Vehicle life cycle tracking progressive harmonic optimization blockchain gradient descent Łukasiewicz fuzzy smart contract