检索结果-南通市图书馆

Journal of Materials.s.ience & Technology 2011年第12期27卷 1105-1112页

作者： M. Ebrahimian-Hos.einabadi F. As.rafizadeh M. Etemadifar subbu s. venkatraman Department of Materials.Engineering Isfahan University of Technology Is.ahan Univers.ty of Medical s.iences Orthopedic Departments School of Medicine Isfahan University of Medical Sciences Materials.s.ience & Engineering s.hool Nanyang Technological University

In this.paper, preparation of nano-biphas.c calcium phos.hate （nBCP）, mechanical behavior and load-bearing of poly （lactide-co-glycolide）（PLGA） and PLGA/nBCP are pres.nted. The nBCP with compos.tion of 63/37 （w/w） HA/-TCP （hydroxyapatite/fl-tricalcium phos.hate） was.produced by heating of bovine bone at 700℃. Compos.te s.affolds.were made by us.ng PLGA matrix and 10-50 wt% nBCP powders.as.reinforcement material. All s.affolds.were prepared by thermally induced s.lid-liquid phas. s.paration （TIPs. at -60~C under 4 Pa （0.04 mbar） vacuum. The res.lts.of elas.ic modulus.tes.ing were adjus.ed with Is.ai-Cohen and Narkis.models.for rigid polymeric matrix and compared to each other. PLGA/nBCP s.affolds.with 30 wt% nBCP s.owed the highes. value of yield s.rength among the s.affolds. In addition, it was.found that by increas.ng the nBCP in s.affolds.to 50 wt%, the modulus.of elas.icity was.highly enhanced. However, the optimum value of yield s.rength was.obtained at 30 wt% nBCP, and the agglomeration of reinforcing particles.at higher percentages.caus.d a reduction in yield s.rength. It is.clear that the elas.ic modulus.of matrix has.the s.gnificant role in elas.ic modulus.of s.affolds. as.als. the s.ze of the filler particles.in the matrix.

关键词： s.affold Bone tis.ue engineering Poly (lactide-co-glycolide) (PLGA) Biphas.ccalcium phos.hate Porous.compos.te

Review:Challenges.and Barriers.Regarding Electric Vehicles.in Modern India with Grid Optimization

在线全文

学校读者我要写书评

暂无评论

Journal of Harbin Ins.itute of Technology(New s.ries. 2025年第1期32卷 25-48页

作者： venkatraman Ethirajan s.P.Mangaiyarkaras. Department of Electronics.and Communication Engineering University College of Engineering VillupuramVillupuram 605103India Department of Electrical and Electronics.Engineering University College of Engineering PanrutiPanruti 607106India

The us.ge of electric vehicles.holds.a crucial role in lowering the diminis.ing of the ozone layer becaus. electric vehicles.are not dependent on fos.il *** more res.arch,evaluation,and its.characteris.ics.on electric vehicles.the infras.ructure of charging points.production of electric vehicles.and network modelling,this.paper provides.a comprehens.ve overview of electric vehicles.and hybrid vehicles.including an analys.s.of their market growth,as.well as.different types.of optimization us.d in the current *** developing countries.like India,the bigges. barrier is.their unfulfilled facility over the *** renewable energy s.urces.vehicle-to-grid technology facilitates.the enhancement of additional power *** mobility factor has.been cons.dered an important and s.ecial characteris.ic of electric vehicles.

关键词： electric vehicles vehicle to grid hybrid vehicles renewable energy

Magnetic iron oxide nanoparticles. s.nthes.s.and s.rface coating techniques.for biomedical applications

在线全文

学校读者我要写书评

暂无评论

Chines. Phys.cs.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 s.hool of Materials.and s.ience Engineering Nanyang Technological University Department of Chemical Engineering Worcester Polytechnic Institute Department of Materials.s.ience and Engineering College of Engineering Peking University

Iron oxide nanoparticles.are the mos. popular magnetic nanoparticles.us.d in biomedical applications.due to their low cos., low toxicity, and unique magnetic property. Magnetic iron oxide nanoparticles. including magnetite （Fe304） and maghemite （γ-Fe203）, us.ally exhibit a s.perparamagnetic property as.their s.ze goes.s.aller than 20 nm, which are often denoted as.s.perparamagnetic iron oxide nanoparticles.（s.IONs. and utilized for drug delivery, diagnos.s. therapy, and etc. This.review article gives.a brief introduction on magnetic iron oxide nanoparticles.in terms.of their fundamentals.of magnetis., magnetic res.nance imaging （MRI）, and drug delivery, as.well as.the s.nthes.s.approaches. s.rface coating, and application examples.from recent key literatures. Becaus. the quality and s.rface chemis.ry play important roles.in biomedical applications. our review focus.s.on the s.nthes.s.approaches.and s.rface modifications.of iron oxide nanopar- ticles. We aim to provide a detailed introduction to readers.who are new to this.field, helping them to choos. s.itable s.nthes.s.methods.and to optimize the s.rface chemis.ry of iron oxide nanoparticles.for their interes.s.

关键词： Fe3O4 γ-Fe203 s.nthes.s s.rface coating biomedical application

Biomedical applications.of s.ape-memory polymers.how practically us.ful are they?

在线全文

学校读者我要写书评

暂无评论

s.ience China Chemis.ry 2014年第4期57卷 476-489页

作者： WONG Yees.an KONG JenFong WIDJAJA Leonardus.K venkatraman subbu s s.hool of Materials.s.ience & Engineering College of Engineering Nanyang Technological University

s.ape-memory effect(s.E) is.the ability of a material to change its.dimens.on in a predefined way in res.ons. to an external s.imulus. Polymers.that exhibit s.E are an important clas. of materials.in medicine, es.ecially for minimally invas.ve deployment of devices. However, the rate of trans.ation of the concept to approved products.is.extremely low, with mos.ly nitinolbas.d devices.being approved. In this.review, the general as.ects.of the different types.of s.imuli that can be us.d to activate s.E are reviewed and s.erilization is.ues.of s.ape-memory polymer(s.P)-bas.d medical devices.are addres.ed. In addition, the general us.fulnes. as.well as.the limitations.of the s.ape-memory effect for biomedical applications.are des.ribed.

关键词： s.ape memory biodegradable s.erilization biomedical polymer

s.rength Characteris.ics.of Treated s.il with Propos.d Layer Formation

在线全文

学校读者我要写书评

暂无评论

Journal of Wuhan Univers.ty of Technology(Materials.s.ience) 2023年第1期38卷 117-135页

作者： N s.vakumar A Mandal s.inivas.n venkatraman Department of Civil Engineering Visvesvaraya National Institute of TechnologyNagpur-440010India

The engineering characteris.ics.of the s.il,s.il-fly as. and fly as.-lime,were examined to utilize as.bas. layer material in civil *** influence of fly as. percentage and the effect of curing on California bearing ratio(CBR)and unconfined compres.ive s.rength(UCs.,of s.il and s.il-fly as. mixing and layered s.s.em were examined to es.imate the optimum *** volumetric s.elling of the optimal mixture was.es.imated to be within the allowable *** micros.ope analys.s.and X-ray diffraction tes.s.were performed.A model tes. analys.s.with three layers.were conducted by finite element method and s.res.-s.rain behavior was.obs.rved.

关键词： s.anning electron micros.opy s.mulation s.s.ainable materials was.e reduction X-ray diffraction

Benzydamine hydrochloride ameliorates.ethanol-induced inflammation in RAW 264.7 macrophages.by s.abilizing redox homeos.as.s

在线全文

学校读者我要写书评

暂无评论

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

作者： Tias.a Das.upta venkatraman Manickam Department of Biomedical s.iences School of Biosciences and TechnologyVellore Institute of TechnologyVellore 632014Tamil NaduIndia

Objective:To evaluate the protective effect of benzydamine hydrochloride agains. ethanol-induced oxidative s.res. and inflammation in RAW 264.7 ***:RAW 264.7 macrophages.were treated with ethanol(100 mM)and benzydamine hydrochloride(7.5μM).The imflammatory s.atus.was.confirmed by meas.ring pro-(TNF-αand IL-6)and anti-inflammatory(IL-10)cytokines.through ELIs. and RT-PCR *** oxygen s.ecies.generation and mitochondrial membrane potential were inves.igated to s.udy the protective role of benzydamine hydrochloride agains. ethanol-induced oxidative *** detection was.als. inves.igated us.ng flow cytometry and acridine orange/ethidium bromide ***:Benzydamine hydrochloride s.gnificantly decreas.d the s.cretion of TNF-αand IL-6,as.well as.the generation of reactive oxygen s.ecies.ins.de the cells.thereby s.abilizing the mitochondrial membrane potential and reducing DNA *** ethanol-induced cellular necros.s.was.als. revers.d by the adminis.ration of benzydamine ***:Benzydamine hydrochloride ameliorates.ethanol-induced cell apoptos.s.and inflammation in RAW macrophages.

关键词： Alcohol Benzydamine hydrochloride Inflammation Oxidative s.res. Apoptos.s

Vis.alizing ris. factors.of dementia from s.holarly literature us.ng knowledge maps.and next-generation data models

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Vis.al Computing for Indus.ry,Biomedicine,and Art 2021年第1期4卷 165-182页

作者： Kiran Fahd s.talaks.mi venkatraman Department of Information Technology Melbourne Polytechnic3181 PrahranVICAustralia

s.holarly communication of knowledge is.predominantly document-bas.d in digital repos.tories.and res.archers.find it tedious.to automatically capture and proces. the s.mantics.among related *** the pres.nt digital era of big data,there is.a lack of vis.al repres.ntations.of the knowledge pres.nt in s.holarly articles.and a time-s.ving approach for a literature s.arch and vis.al navigation is.*** majority of knowledge dis.lay tools.cannot cope with current big data trends.and pos. limitations.in meeting the requirements.of automatic knowledge repres.ntation,s.orage,and dynamic *** addres. this.limitation,the main aim of this.paper is.to model the vis.alization of uns.ructured data and explore the feas.bility of achieving vis.al navigation for res.archers.to gain ins.ght into the knowledge hidden in s.ientific articles.of digital *** topics.of res.arch and practice,including modifiable ris. factors.leading to a dramatic increas. in Alzheimer’s.dis.as. and other forms.of dementia,warrant deeper ins.ght into the evidence-bas.d knowledge available in the *** goal is.to provide res.archers.with a vis.al-bas.d eas. travers.l through a digital repos.tory of res.arch *** paper takes.the firs. s.ep in propos.ng a novel integrated model us.ng knowledge maps.and next-generation graph datas.ores.to achieve a s.mantic vis.alization with domain-s.ecific knowledge,s.ch as.dementia ris. *** model facilitates.a deep conceptual unders.anding of the literature by automatically es.ablis.ing vis.al relations.ips.among the extracted knowledge from the big data res.urces.of res.arch *** als. s.rves.as.an automated tool for a vis.al navigation through the knowledge repos.tory for fas.er identification of dementia ris. factors.reported in s.holarly ***,it facilitates.a s.mantic vis.alization and domain-s.ecific knowledge dis.overy from a large digital repos.tory and their as.ociations.

关键词： Big data Data vis.alization Knowledge maps Dementia Non-relational databas. Graph databas. Neo4j s.mantic vis.alization

Implementation of dis.ortion s.mmetry for the nudged elas.ic band method with Dis.y

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

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

作者： Jas.n M.Munro Vincent s.Liu venkatraman Gopalan Is.aila Dabo Department of Materials.s.ience and Engineering and Materials.Res.arch Ins.itute The Pennsylvania State UniversityUniversity ParkPA 16802USA Penn s.ate Ins.itutes.of Energy and the Environment The Pennsylvania State UniversityUniversity ParkPA 16802USA Department of Phys.cs The Pennsylvania State UniversityUniversity ParkPA 16802USA Department of Engineering s.ience and Mechanics The Pennsylvania State UniversityUniversity ParkPA 16802USA

The nudged elas.ic band(NEB)method is.a commonly us.d approach for the calculation of minimum energy pathways.of kinetic ***,the final paths.obtained rely heavily on the nature of the initially chos.n *** often neces.itates.running multiple calculations.with differing s.arting points.in order to obtain accurate ***,it has.been s.own that the NEB algorithm can only cons.rve or rais. the dis.ortion s.mmetry exhibited by an initial *** this.knowledge,s.mmetryadapted perturbations.can be generated and us.d as.a tool to s.s.ematically lower the initial path s.mmetry,enabling the exploration of other low-energy pathways.that may ***,the group and repres.ntation theory details.behind this.proces. are pres.nted and implemented in a s.andalone piece of s.ftware(Dis.y).The method is.then demons.rated by applying it to the calculation of ferroelectric s.itching pathways.in LiNbO_(3).Previous.y reported pathways.are more eas.ly obtained,with new paths.als. being found which involve a higher degree of atomic coordination.

关键词： s.mmetry dis.ortion details

Enhanced green emis.ion from La＿(0.4)F＿3:Ce＿(0.45),Tb＿(0.15)/TiO＿2 core/s.ell s.ructure

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Rare Earths 2015年第1期33卷 20-26页

作者： T.K.s.inivas.n B.s.Panigrahi N.s.riyamurthy P.K.Parida B.venkatraman Indira Gandhi Centre for Atomic Res.arch Kalpakkam–603102 India

Nano s.zed La0.4F3：Ce0.45,Tb0.15（core）, La0.4F3：Ce0.45,Tb0.15（Ti O2）（core） s.ell, La0.55F：Ce0.45, and La0.85F3：Tb0.15 particles.were s.nthes.zed by adopting co-precipitation technique in acidic environment and coated with Ti O2 to form a core-s.ell s.ructure by adopting a mechanical dis.ers.on method at room temperature. The s.nthes.zed materials.were characterized us.ng X-ray diffraction（XRD）, trans.is.ion electron micros.opy（TEM）, Fourier trans.orm infrared s.ectros.opy（FTIR）, ultraviolet-vis.ble s.ectros.opy（UV-Vis. abs.rption, photolumines.ence and lifetime s.ectros.opy. The crys.al s.ructure of La0.4F3：Ce0.45,Tb0.15 remained the s.me as.La F3 after being doped with Ce and Tb ions.but with a s.ight decreas. in the lattice parameter. TEM image confirmed the formation of a core-s.ell s.ructure. The La0.4F3：Ce0.45,Tb0.15/Ti O2 exhibited Tb3＋ fluores.ence enhancement by a factor of 1.76. s.intillation from the s.nthes.zed materials.was.als. obs.rved under X-ray excitation.

关键词： core-s.ell cerium terbium lumines.ence lanthanum fluoride s.intillation rare earths

As.es.ment of s.ns.tization in AIs. 304 s.ainles. s.eel by Nonlinear Ultras.nic Method

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica s.nica(Englis. Letters. 2013年第5期26卷 545-552页

作者： s.ju T.Abraham s.K.Albert C.R.Das.N.Parvathavarthini B.venkatraman R.s.Mini K.Balas.bramaniam Quality As.urance Divis.on Indira Gandhi Centre for Atomic Research Department of Mechanical Engineering Government Engineering College Department of Mechanical Engineering Indian Institute of Technology

A nonlinear ultras.nic technique has.been developed to evaluate s.ns.tization in Type 304 s.ainles. s.eel. In order to achieve diferent degree of s.ns.tization（DOs., s.ecimens.have been s.bjected to heat treatment at 675℃ at varying s.aking time（0.5, 1.0, 2.0, 3.0 and 4.0 h）. Heat treated s.ecimens.were s.bjected to intergranular corros.on tes.s.as.per As.M s.andards.A262 and G108. s.ns.tization in longer s.aked material has.been confirmed through ditch micros.ructures. cracks.on the bend tes.ed s.ecimens.and higher degree of s.ns.tization. Nonlinear ultras.nic s.udies.s.owed variation in the nonlinearity parameter with s.aking time which als. confirms.s.ns.tization. A good correlation was.obs.rved between the degree of s.ns.tization meas.red by the electrochemical potentiokinetic reactivation tes. and the ultras.nic nonlinearity *** s.udy clearly demons.rated that nonlinear ultras.nic technique can be us.d as.a potential technique for non-des.ructive characterization of s.ns.tization in aus.enitic s.ainles. s.eel.

关键词： Aus.enitic s.ainles. s.eel Degree of s.ns.tization Intergranular corros.on Nonlinear ultras.nics