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Transforming nanoscale VO_(2)(b) into a scalable sodium-ion electrode

Nano Research 2024年第10期17卷 8809-8818页

作者： Yunkai Luo Swetha chandrasekaran bintao Hu Randy Chen Marcus Worsley bruce Dunn Department of Materials Science and Engineering University of CaliforniaLos AngelesCA 90095USA Lawrence Livermore National Laboratory CA 94550USA

The intermittent nature of renewable energies requires highly reliable grid-level energy storage approaches.A critical consideration in developing this technology is the areal capacity which determines battery performance and influences the cost of battery *** related importance is finding new ways of developing scalable *** recent years,threedimensional(3D)printing of conductive scaffolds has emerged as an alternative to overcome the scalability limitations of commercial tape cast *** research carried out in the current study demonstrates a successful scalability pathway for nanoscale VO_(2)(b),a desirable cathode for sodium-ion batteries which has a nano-flower morphology with a crystallite sizeb)onto a graphene aerogel scaffold,we were able to achieve mass loading of over 100 mg·cm^(-2) and still possess an areal capacity of 10 mAh·cm^(-2) at a current density of 5 mA·cm^(-2).Moreover,after 1000 cycles,these electrodes retained 75% to 80% of their initial *** at high loading levels,the electrodeposited VO_(2)(b)exhibits pseudocapacitive material signatures such as a box-like voltammetry response,linear galvanostatic response,and no phase change upon *** scalability of the VO_(2)(b)electrode is demonstrated in a series of experiments which show the areal capacity to scale upon increase in both mass loading and electrode thickness,with only small changes in specific *** study establishes that nanoscale materials can be scaled up to achieve thick electrodes without compromising their electrochemical properties.

关键词： nano VO_(2)(b) sodium-ion battery scalable electrodes three-dimensional(3D)printed scaffold additive manufacturing

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鞣制工段酶的使用研究：PartⅡ．植鞣吸收动力学

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北京皮革（中外鞋讯）（下） 2010年第9期 78-83页

作者： Swarna V.Kanth P.Ramesh Kannan N.Usharani G.C.Jayakumar S.Deepa b.chandrasekaran 胡杨（编译）吕绪庸（校）中央皮革研究所；科学与工业研究理事会金奈阿迪亚尔600020 四川大学制革清洁技术国家工程实验室 610065 成都培根皮革科研所 610041

研究了细菌胶原酶作为助剂在鞣制系统中的作用，细菌胶原酶的使用能够使单宁更好地向皮内渗透，提升坯革对单宁的吸收率。对不同浓度细菌胶原酶预处理过的坯革的鞣制动力学进行了研究，得到了鞣制过程中坯革对单宁的等温吸收曲线和不同... 详细信息

研究了细菌胶原酶作为助剂在鞣制系统中的作用，细菌胶原酶的使用能够使单宁更好地向皮内渗透，提升坯革对单宁的吸收率。对不同浓度细菌胶原酶预处理过的坯革的鞣制动力学进行了研究，得到了鞣制过程中坯革对单宁的等温吸收曲线和不同经验公式（Parabolic公式、Cegarra—Puente公式以及修正后的Cegarra—Puente公式）的拟合曲线。结果表明修正后的Cegarra—Puente公式与实验所得数据拟合程度最好，用该公式计算出的吸收速率常数表明，酶助鞣工艺比对照组有更高的速率常数以及更快的吸收动力学。和对照组相比，不同温度条件下的酶处理均会使单宁的吸收率和吸收速率常数明显提高，而且酶处理后坯革的表面活化能明显降低，由Arrhenius公式得出，酶助鞣工艺与对照组相比坯革表面活化能降低了60％。

关键词：吸收动力学胶原酶鞣制 Part Arrhenius公式经验公式植鞣工段

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Automating Transfer Credit Assessment-A Natural Language Processing-based Approach

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Computers, Materials & Continua 2022年第11期73卷 2257-2274页

作者： Dhivya chandrasekaran Vijay Mago Lakehead University Thunder BayOntarioP7B 5E1Canada

Student mobility or academic mobility involves students moving between institutions during their post-secondary education,and one of the challenging tasks in this process is to assess the transfer credits to be offered to the incoming *** general,this process involves domain experts comparing the learning outcomes of the courses,to decide on offering transfer credits to the incoming *** manual implementation is not only labor-intensive but also influenced by undue bias and administrative *** proposed research article focuses on identifying a model that exploits the advancements in the field of Natural Language Processing(NLP)to effectively automate this *** the unique structure,domain specificity,and complexity of learning outcomes(LOs),a need for designing a tailor-made model *** proposed model uses a clustering-inspired methodology based on knowledge-based semantic similarity measures to assess the taxonomic similarity of LOs and a transformer-based semantic similarity model to assess the semantic similarity of the *** similarity between LOs is further aggregated to form course to course *** to the lack of quality benchmark datasets,a new benchmark dataset containing seven course-to-course similarity measures is *** the inherent need for flexibility in the decision-making process the aggregation part of the model offers tunable parameters to accommodate different levels of *** providing an efficient model to assess the similarity between courses with existing resources,this research work also steers future research attempts to apply NLP in the field of articulation in an ideal direction by highlighting the persisting research gaps.

关键词： Articulation agreements higher education natural language processing semantic similarity

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Silver nanoparticles tolerant bacteria from sewage environment

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Journal of Environmental Sciences 2011年第2期23卷 346-352页

作者： Sudheer Khan Amitava Mukherjee Natarajan chandrasekaran Nanobio-Medicine Laboratory School of Bio-Sciences and TechnologyVIT University

Silver nanoparticle （SNP） is a threat to soil, water and human health. Protection of environment from silver nanoparticles is a major concern. A sewage isolate, bacillus pumilus treated with SNPs showed similar growth kinetics to that without nanoparticles. A reduction in the amount of exopolysaccharides was observed after SNPs - b. pumilus culture supernatant interaction. The Fourier transform infrared spectroscopy （FT-IR） peaks for the exopolysaccharides extracted from the bacterial culture supernatant and＇the interacted SNPs were almost similar. The exopolysaccharide capping of the SNPs was confirmed by UV-Visible, FT-IR and X-ray diffraction analysis. The study of bacterial exopolysaccharides capped SNPs with E. coli, S. aureus and M. luteus showed less toxicity compared to uncoated SNPs. Our studies suggested that the capping of nanopartieles by bacterially produced exopolysaccharides serve as the probable mechanism of tolerance.

关键词： bacillus pumilus silver nanoparticles exopolysaccharides encapsulation bacterial tolerance toxicity reduction

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Measurement of natural radionuclides in bricks and brick-making clays from Cuddalore district,Tamilnadu,India

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Nuclear Science and Techniques 2010年第4期21卷 218-220页

作者： G.Viruthagiri R.Ravisankar b.Rajamannan K.Thillaivelavan A.chandrasekaran V.Meenkshisundram Deptartment of physics Annamalai University Post Graduate and Research Department of Physics Govt.Arts College Department of Physics Govt.Arts College Department of Physics Sacred Heart College Radiological Safety Division Indira Gandhi Centre for Atomic Research(IGCAR)

In India,bricks as building materials are mainly prepared by clay using the deposited sediments of rivers,and the radionuclide contents in bricks and brick-making clays should vary with origin and geological *** this paper,the radionuclide contents of these materials from river bank areas of Cuddalore district,Tamilnadu India are measured by gamma ray spectrometer using NaI(Tl) detector,and compared with those of other *** radiation hazard indices,which are evaluated by radium-equivalent(Raeq) activity,are lower than that of NEA-OECD.

关键词：射线测量天然放射性核素制砖粘土印度放射性核素含量河流沉积物建筑材料

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New Development in the Performance Improvement Synchronous Motor

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Circuits and Systems 2016年第10期7卷 2865-2874页

作者： V. chandrasekaran D. Nagarajan b. Nagaraj Department of Electrical and Electronics Engineering Sri Eshwar College of Engineering Coimbatore India Department of Electrical and Electronics Engineering Karpagam College of Engineering Coimbatore India Department of Electronics and Communication Engineering Karpagam College of Engineering Coimbatore India

Synchronous machines are dedicated to the specific application. They are generally employed in rolling mills, pumps, fans, and compressors like reprobating and centrifugal drives, pulp and paper processing, water treatment, mining, and in cement industries. As a synchronous motor, the performance is reduced for the given excitation while the load increases. When operated as synchronous generators, both power loads and lighting loads depend on the output from the armature winding. This paper presents an alternative choice in which by providing an additional winding in the stationary armature, when operated as a Double Winding Synchronous Motor (DWSyM), it becomes possible to operate in maximum power factor by adjusting the loads on both the stator windings. When operated as conventional motor, for the load current of 3.5 A, the efficiency is 55% and power factor is 0.55, for the same excitation when second winding is connected to a load current of 1 A, the efficiency is improved to 77.6% and power factor is improved to 0.66. The main focus of this machine is to improve the performance of the machine for the reduced excitation and minimum load. For the reduced excitation, the performance can be improved by loading both the windings. While operated as Double Winding Synchronous Generator (DWSyG), two stator outputs are available which help to separate the power and lighting circuits. Hence, interruption in the lighting circuit can be limited, this machine can be considered as Twin generator.

关键词： Double Winding Synchronous Motor (DWSyM) Double Winding Synchronous Generator (DWSyG) Performance Improvement Energy Conservation Twin Generator

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Comparative Analysis of EST Mining Reveals High Degree of Conservation among Eight Leguminosae Species

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Journal of Agricultural Science and Technology(b) 2013年第6期3卷 447-458页

作者： Jyotika bhati Hariharan chandrasekaran Suresh Chand School of bioSciences and biotechnology Banasthali Vidyapeeth Rajasthan 304022 India Agricultural Knowledge Management Unit Indian Agricultural Research Institute New Delhi 110012 India School of Life Sciences Devi Ahilya University Khandwa Road Indore 452001 India

Fabaceae is the third largest family of flowering plants and is unique among crops in their ability of fixing atmospheric nitrogen. Fabaceae is one of the few plant families with extensive genomic data available in multiple species. The unprecedented complexity and impending completeness of these data create opportunities for discovering new approaches. The Legume and Medicago share much-conserved colinearity between their genomes which can be exploited for the genomic research in Leguminosae crops. In this study, 1,952,191 ESTs of 8 Leguminosae species were clustered into unigenes contigs and compared with Medicago truncatula gene indices. Almost all the unigenes of Leguminosae species showed high similarity with Medicago genes, except for those of Lens culinaris, where 95% of unigenes were found similar. A total of 10,874 SSRs were identified in the unigenes. Functional annotation of unigenes showed that the majority of the genes are present in metabolism and energy functional classes. It is expected that comparative genomic analysis between Medicago and related crop species will expedite research in other Legume species. This would be helpful for genomics as well as evolutionary studies, and the DNA markers developed can be used for mapping, tagging and cloning of specific important genes in Leguminosae.

关键词： Leguminosae ESTs GC content SSR functional annotation

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一种环保型山羊鞋面革的加工方法

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中国皮革 2006年第7期35卷 6-8页

作者： S Saravanabhavan R Aravindhan P Thanikaivelan b.chandrasekaran J Raghava rao b Unni nair 刘鹏杰(译) 中央皮革研究院皮革服装和配件发展中心印度城奈600020 不详

介绍了一种三步铬鞣山羊面革的加工方法,即:酶脱毛,NaOH打开皮纤维和无浸酸、无提碱铬鞣。试验结果显示:革中结合的铬含量较常规鞣制方法提高了21%,制革废液中的COD和总固含量分别降低了43%和70%。

关键词：山羊面革环保铬鞣

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Fasting C-Peptide Response, and Its Clinical Impact in Type I Diabetics to a Novel Metaphysical Energy Healing Therapy—Preliminary Experience and Observations

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Journal of Diabetes Mellitus 2016年第1期6卷 90-99页

作者： C. V. Krishnaswami Ramesh chandrasekaran Deepa Krishnaswami A. Ganesan b. Sampoornam Saroja Srinivasan A. Srivasta Shobana Anojan V. Rajan Iyer TAG-VHS Diabetes Research Centre (A Unit of Voluntary Health Services Diabetes Department) Chennai India

Type 1 diabetes is classically the true form of insulinopaenic diabetes usually occurring in young children below the age of 15 years and occasionally up to 20 years and characterised by very low/ negligible fasting C-peptide in their blood due to extensive irreversible beta cell damage. T1DM probably accounts for 5% to 10% of all diagnosed diabetes. The worldwide prevalence of T1DM is 0.1% to 0.3%, with 78,000 new cases every year, especially among young individuals (15. Type I diabetes is very much lower (20 times) in countries like Japan and India, than the western countries. The European Nicotinamide Diabetes Intervention Trial (ENDIT) is focused on the use of nicotinamide in the prevention of diabetes. In high doses (nicotinamide), it may cause a degree of sedation, a feeling of depression, and in very large dosages, liver toxicity. because the vitamin cannot be marketed as a drug, the study is not getting a great deal of support from pharmaceutical companies. GAD antibodies (GADA) are a major diagnostic marker for Type 1 diabetes. Phase II clinical trials of a vaccine containing alum and recombinant GAD65, an auto antigen involved in type 1 diabetes, were promising, as of 2014 Phase III trial had failed. In our quest for improving the clinical condition & quality of life of type I DM & also to reduce the economic burden on them, we have embarked on a novel metaphysical energy therapy which we have been trying for the past 3 years at our research Centre. We have so far treated some 15 cases with this DAMM therapy. Among the 15 cases, 6 cases have shown significant improvement in fasting C-peptide levels. With the advent of this new modality of treatment (DAMM Therapy) the cost of treatment will be greatly reduced. This DAMM Therapy apparently has no side effects. This mode of treatment will open a new light in the world of Type I diabetes.

关键词： J.I.I.D.M. T1DM IDDM ENDIT GAD65 GADA DAMM Therapy

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Review Article: Herbal Approach for Obesity Management

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American Journal of Plant Sciences 2012年第7期3卷 1003-1014页

作者： C. V. chandrasekaran M. A. Vijayalakshmi K. Prakash V. S. bansal J. Meenakshi A. Amit Center for bioseparation Technology VIT University Vellore Tamil Nadu India R&D centre 5B Veerasandra Industrial Area Natural Remedies Pvt Ltd Bangalore Karnataka India

Obesity, a complex interplay between environmental and genetic factors and is associated with significant morbidity and mortality. Usage of herbs for the management of obesity in the recent times is attracting attention. A web and manual based literature survey was conducted to assess the amount of information available on the herbal products for weight management. Traditional literature, PubMed, Scopus, Google scholar databases were screened up to February 2012. The search words were “obesity', 'herbal medicine/products/extracts”, 'medicinal plants', 'traditional medicine', 'Ayurvedic medicine' without narrowing/limiting searching words or elements. Publications only with abstracts/full articles and books were reviewed in the search. based on the available literature, for many of the herbal and weight loss products, there is little published information and there have been no clinical trials or the level of evidence is limited. Our literature survey also indicated that these herbal products fall under an acceptable level of evidence or with no scientific background at all, or they have a scientific rational but not to an acceptance level. Attempts were made in the review to define the features of possible herbal weight loss product. An ideal herbal anti obesity product should reduce the weight by 10% over placebo of treatment by showing an evidence of improvement of bio markers like blood pressure, lipids and glycemia without any side effects.

关键词： Morbidity Ayurveda Obesity Literature Survey Medicinal Plants Herbal Products Weight Management

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