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Design and Development of an Intelligent Energy Management System for a Smart Grid to Enhance the Power Quality

Energy Engineering 2023年第8期120卷 1747-1761页

作者： Nisha vasudevan vasudevan venkatraman A.Ramkumar T.Muthukumar A.Sheela M.Vetrivel R.J.Vijaya Saraswathi F.T.Josh Department of Electrical and Electronics Engineering Kalasalingam Academy of Research and EducationTamil NaduIndia Department of Computer Science Engineering Kalasalingam Academy of Research and EducationTamil NaduIndia Department of Electrical and Electronics Engineering Kongunadu College of Engineering and TechnologyTamil NaduIndia Department of Electrical and Electronics Engineering Kongu Engineering CollegeTamil NaduIndia Department of Electrical and Electronics Engineering Narasu’s Sarathy Institute of TechnologyTamil NaduIndia Department of Electrical and Electronics Engineering Panimalar Engineering CollegeTamil NaduIndia Department of Electrical and Electronics Engineering Karunya Institute of Technology&SciencesTamil NaduIndia

MigroGrid(MG)has emerged to resolve the growing demand for *** because of its inconsistent output,it can result in various power quality(PQ)*** is a problem that is becoming more and more important for the reliability of power systems that use renewable energy ***,the employment of nonlinear loads will introduce harmonics into the system and,as a result,cause distortions in the current and voltage waveforms as well as low power quality issues in the supply ***,this research focuses on power quality enhancement in the MG using hybrid shunt ***,the performance of the filter mainly depends upon the design,and stability of the *** efficiency of the proposed filter is enhanced by incorporating an enhanced adaptive fuzzy neural network(AFNN)*** performance of the proposed topology is examined in a MATLAB/Simulink environment,and experimental findings are provided to validate the effectiveness of this ***,the results of the proposed controller are compared with Adaptive Fuzzy Back-Stepping(AFBS)and Adaptive Fuzzy Sliding(AFS)to prove its superiority over power quality improvement in *** the analysis,it can be observed that the proposed system reduces the total harmonic distortion by about 1.8%,which is less than the acceptable limit standard.

关键词： Artificial intelligence resistive inductive load shunt hybrid filter smart grid adaptive fuzzy back-stepping power factor

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Benzydamine hydrochloride ameliorates ethanol-induced inflammation in RAW 264.7 macrophages by stabilizing redox homeostasis

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Asian Pacific Journal of Tropical Biomedicine 2024年第2期14卷 73-81,I0006-I0009页

作者： Tiasha Dasgupta venkatraman Manickam Department of Biomedical Sciences School of Biosciences and TechnologyVellore Institute of TechnologyVellore 632014Tamil NaduIndia

Objective:To evaluate the protective effect of benzydamine hydrochloride against ethanol-induced oxidative stress and inflammation in RAW 264.7 ***:RAW 264.7 macrophages were treated with ethanol(100 mM)and benzydamine hydrochloride(7.5μM).The imflammatory status was confirmed by measuring pro-(TNF-αand IL-6)and anti-inflammatory(IL-10)cytokines through ELISA and RT-PCR *** oxygen species generation and mitochondrial membrane potential were investigated to study the protective role of benzydamine hydrochloride against ethanol-induced oxidative *** detection was also investigated using flow cytometry and acridine orange/ethidium bromide ***:Benzydamine hydrochloride significantly decreased the secretion of TNF-αand IL-6,as well as the generation of reactive oxygen species inside the cells,thereby stabilizing the mitochondrial membrane potential and reducing DNA *** ethanol-induced cellular necrosis was also reversed by the administration of benzydamine ***:Benzydamine hydrochloride ameliorates ethanol-induced cell apoptosis and inflammation in RAW macrophages.

关键词： Alcohol Benzydamine hydrochloride Inflammation Oxidative stress Apoptosis

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Epidemiology of EGFR Mutation in Adenocarcinoma NSCLC Patients in India: A Systematic Review and Meta-Analysis

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Advances in Lung Cancer 2024年第1期13卷 1-21页

作者： Ankita Jain Kumar Prabhash venkatraman Radhakrishnan Shashank Srinivasan Pfizer Products India Private Limited Mumbai India Tata Memorial Hospital Mumbai India Cancer Institute (W.I.A.) Chennai India

Studies reporting the Indian prevalence of Epidermal Growth Factor Receptor (EGFR) mutation are mostly single centers with small sample sizes. This systematic review and meta-analysis summarized the available evidence of EGFR mutation epidemiology in Indian patients with adenocarcinoma (ADC) Non-Small Cell Lung Cancer (NSCLC). We conducted a structured literature search in PubMed, and EMBASE databases from January 2004 through October 2019. The primary outcome of interest was prevalence of EGFR mutation by gender, smoking status, and mutation subtype. The review included 34 studies. EGFR mutation prevalence was 39.5% in patients with ADC, and significantly higher in females, non-smokers, and patients with exon 19 deletions. The EGFR mutation frequency in Indian patients with ADC was higher than reported in Caucasians but at a lower range of that reported in East Asians. These findings support the use of EGFR mutation testing to guide choice of treatment.

关键词： Epidemiology Epidermal Growth Factor Receptor Adenocarcinoma Non-Small Cell Lung Cancer India

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Strength Characteristics of Treated Soil with Proposed Layer Formation

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Journal of Wuhan University of Technology(Materials Science) 2023年第1期38卷 117-135页

作者： N Sivakumar A Mandal Srinivasan venkatraman Department of Civil Engineering Visvesvaraya National Institute of TechnologyNagpur-440010India

The engineering characteristics of the soil,soil-fly ash and fly ash-lime,were examined to utilize as base layer material in civil *** influence of fly ash percentage and the effect of curing on California bearing ratio(CBR)and unconfined compressive strength(UCS),of soil and soil-fly ash mixing and layered system were examined to estimate the optimum *** volumetric swelling of the optimal mixture was estimated to be within the allowable *** microscope analysis and X-ray diffraction tests were performed.A model test analyses with three layers were conducted by finite element method and stress-strain behavior was observed.

关键词： Scanning electron microscopy simulation sustainable materials waste reduction X-ray diffraction

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Visualizing risk factors of dementia from scholarly literature using knowledge maps and next-generation data models

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Visual Computing for Industry,Biomedicine,and Art 2021年第1期4卷 165-182页

作者： Kiran Fahd Sitalakshmi venkatraman Department of Information Technology Melbourne Polytechnic3181 PrahranVICAustralia

Scholarly communication of knowledge is predominantly document-based in digital repositories,and researchers find it tedious to automatically capture and process the semantics among related *** the present digital era of big data,there is a lack of visual representations of the knowledge present in scholarly articles,and a time-saving approach for a literature search and visual navigation is *** majority of knowledge display tools cannot cope with current big data trends and pose limitations in meeting the requirements of automatic knowledge representation,storage,and dynamic *** address this limitation,the main aim of this paper is to model the visualization of unstructured data and explore the feasibility of achieving visual navigation for researchers to gain insight into the knowledge hidden in scientific articles of digital *** topics of research and practice,including modifiable risk factors leading to a dramatic increase in Alzheimer’s disease and other forms of dementia,warrant deeper insight into the evidence-based knowledge available in the *** goal is to provide researchers with a visual-based easy traversal through a digital repository of research *** paper takes the first step in proposing a novel integrated model using knowledge maps and next-generation graph datastores to achieve a semantic visualization with domain-specific knowledge,such as dementia risk *** model facilitates a deep conceptual understanding of the literature by automatically establishing visual relationships among the extracted knowledge from the big data resources of research *** also serves as an automated tool for a visual navigation through the knowledge repository for faster identification of dementia risk factors reported in scholarly ***,it facilitates a semantic visualization and domain-specific knowledge discovery from a large digital repository and their associations.

关键词： Big data Data visualization Knowledge maps Dementia Non-relational database Graph database Neo4j Semantic visualization

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Magnetic iron oxide nanoparticles: Synthesis and surface coating techniques for biomedical applications

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Chinese Physics B 2014年第3期23卷 13-31页

作者：孙圣男魏超朱赞赞侯仰龙 Subbu S venkatraman 徐梽川 School of Materials and Science Engineering Nanyang Technological University Department of Chemical Engineering Worcester Polytechnic Institute Department of Materials Science and Engineering College of Engineering Peking University

Iron oxide nanoparticles are the most popular magnetic nanoparticles used in biomedical applications due to their low cost, low toxicity, and unique magnetic property. Magnetic iron oxide nanoparticles, including magnetite （Fe304） and maghemite （γ-Fe203）, usually exhibit a superparamagnetic property as their size goes smaller than 20 nm, which are often denoted as superparamagnetic iron oxide nanoparticles （SPIONs） and utilized for drug delivery, diagnosis, therapy, and etc. This review article gives a brief introduction on magnetic iron oxide nanoparticles in terms of their fundamentals of magnetism, magnetic resonance imaging （MRI）, and drug delivery, as well as the synthesis approaches, surface coating, and application examples from recent key literatures. Because the quality and surface chemistry play important roles in biomedical applications, our review focuses on the synthesis approaches and surface modifications of iron oxide nanopar- ticles. We aim to provide a detailed introduction to readers who are new to this field, helping them to choose suitable synthesis methods and to optimize the surface chemistry of iron oxide nanoparticles for their interests.

关键词： Fe3O4 γ-Fe203 synthesis surface coating biomedical application

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Biomedical applications of shape-memory polymers:how practically useful are they?

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Science China Chemistry 2014年第4期57卷 476-489页

作者： WONG YeeShan KONG JenFong WIDJAJA Leonardus K venkatraman Subbu S School of Materials Science & Engineering College of Engineering Nanyang Technological University

Shape-memory effect(SME) is the ability of a material to change its dimension in a predefined way in response to an external stimulus. Polymers that exhibit SME are an important class of materials in medicine, especially for minimally invasive deployment of devices. However, the rate of translation of the concept to approved products is extremely low, with mostly nitinolbased devices being approved. In this review, the general aspects of the different types of stimuli that can be used to activate SME are reviewed and sterilization issues of shape-memory polymer(SMP)-based medical devices are addressed. In addition, the general usefulness as well as the limitations of the shape-memory effect for biomedical applications are described.

关键词： shape memory biodegradable sterilization biomedical polymer

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Evaluating and Modeling the Mechanical Properties of the Prepared PLGA/nano-BCP Composite Scaffolds for Bone Tissue Engineering

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Journal of Materials Science & Technology 2011年第12期27卷 1105-1112页

作者： M. Ebrahimian-Hosseinabadi F. Ashrafizadeh M. Etemadifar Subbu S. venkatraman Department of Materials Engineering Isfahan University of Technology Isfahan University of Medical Sciences Orthopedic Departments School of Medicine Isfahan University of Medical Sciences Materials Science & Engineering School Nanyang Technological University

In this paper, preparation of nano-biphasic calcium phosphate （nBCP）, mechanical behavior and load-bearing of poly （lactide-co-glycolide）（PLGA） and PLGA/nBCP are presented. The nBCP with composition of 63/37 （w/w） HA/-TCP （hydroxyapatite/fl-tricalcium phosphate） was produced by heating of bovine bone at 700℃. Composite scaffolds were made by using PLGA matrix and 10-50 wt% nBCP powders as reinforcement material. All scaffolds were prepared by thermally induced solid-liquid phase separation （TIPS） at -60~C under 4 Pa （0.04 mbar） vacuum. The results of elastic modulus testing were adjusted with Ishai-Cohen and Narkis models for rigid polymeric matrix and compared to each other. PLGA/nBCP scaffolds with 30 wt% nBCP showed the highest value of yield strength among the scaffolds. In addition, it was found that by increasing the nBCP in scaffolds to 50 wt%, the modulus of elasticity was highly enhanced. However, the optimum value of yield strength was obtained at 30 wt% nBCP, and the agglomeration of reinforcing particles at higher percentages caused a reduction in yield strength. It is clear that the elastic modulus of matrix has the significant role in elastic modulus of scaffolds, as also the size of the filler particles in the matrix.

关键词： Scaffold Bone tissue engineering Poly (lactide-co-glycolide) (PLGA) Biphasiccalcium phosphate Porous composite

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Role of angiogenesis in oral squamous cell carcinoma development and metastasis: an immunohistochemical study

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International Journal of Oral Science 2011年第4期3卷 216-224页

作者： Shivakumar Madappa Shivamallappa Narayan Tondikulam venkatraman Balasundari Shreedhar Leeky Mohanty Sadhana Shenoy Department of Oral Pathology and Microbiology The Oxford Dental College Hospital and Research Centre

Although a few studies have shown that vascularity is increased from normal mucosa to dysplasia to carcinoma suggesting that disease progression in the oral mucosa is accompanied by angiogenesis. The role in lymph node metastasis in oral squamous cell carcinoma （OSCC） is equivocal. Role of angiogenesis in OSCC development and metastasis is evaluated in this study. This retrospective study of 50 samples consisted of 9 normal buccal mucosa, 22 leukoplakias, and 19 OSCC. Polyclonal antibodies to von-Willebrand factor were used to highlight the microvessels. Images were captured and morphometric image analysis was done for microvessel density （MVD）, area, and perimeter. Highest, as well as mean values of these three parameters were compared. MVD and perimeter, but not area, are significantly different between normal mucosa and OSCC, and leukoplakia and OSCC. There were no differences between normal mucosa and leukoplakia. MVD, area, and perimeter were not significantly different between the OSCC with and without lymph node metastasis. The highest and mean values of MVD are significantly correlated. In the development of OSCC, angiogenic phenotypic change occurs in carcinomas rather than in the pre-cancerous stage, and quantification of angiogenesis in OSCC does not predict the risk of lymph node metastasis.

关键词： angiogenesis vessel density oral carcinoma metastasis image analysis leukoplakia oral mucosa

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Implementation of distortion symmetry for the nudged elastic band method with DiSPy

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npj Computational Materials 2019年第1期5卷 685-693页

作者： Jason M.Munro Vincent S.Liu venkatraman Gopalan Ismaila Dabo Department of Materials Science and Engineering and Materials Research Institute The Pennsylvania State UniversityUniversity ParkPA 16802USA Penn State Institutes of Energy and the Environment The Pennsylvania State UniversityUniversity ParkPA 16802USA Department of Physics The Pennsylvania State UniversityUniversity ParkPA 16802USA Department of Engineering Science and Mechanics The Pennsylvania State UniversityUniversity ParkPA 16802USA

The nudged elastic band(NEB)method is a commonly used approach for the calculation of minimum energy pathways of kinetic ***,the final paths obtained rely heavily on the nature of the initially chosen *** often necessitates running multiple calculations with differing starting points in order to obtain accurate ***,it has been shown that the NEB algorithm can only conserve or raise the distortion symmetry exhibited by an initial *** this knowledge,symmetryadapted perturbations can be generated and used as a tool to systematically lower the initial path symmetry,enabling the exploration of other low-energy pathways that may ***,the group and representation theory details behind this process are presented and implemented in a standalone piece of software(DiSPy).The method is then demonstrated by applying it to the calculation of ferroelectric switching pathways in LiNbO_(3).Previously reported pathways are more easily obtained,with new paths also being found which involve a higher degree of atomic coordination.

关键词： symmetry distortion details

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