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s.s.em Identification of Heritage s.ructures.Through AVT and OMA:A Review

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s.ructural Durability & Health Monitoring 2019年第1期13卷 1-40页

作者： Vinay s.impi Madappa V.R.sivasubramanian s.B.s.ngh Department of Civil Engineering National Institute of Technology PuducherryKaraikal609609India Department of Civil Engineering Birla Institute of Technology and Science PilaniPilani333031India

In this.review article,the pas. inves.igations.carried out on heritage s.ructures.us.ng Ambient Vibration Tes.(AVT)and Operational Modal Analys.s.OMA)for s.s.em identification(determination of dynamic properties.like frequency,mode s.ape and damping ratios.and as.ociated applications.are s.mmarized.A total of 68 major res.arch s.udies.on heritage s.ructures.around the world that are available in literature are s.rveyed for this.*** firs.,field inves.igations.carried out on heritage s.ructures.prior to conducting AVT are explained in ***,s.ecifications.of accelerometers.location of accelerometers.and optimization of accelerometer networks.have been elaborated with res.ect to the geometry of the heritage *** addition to this.ambient vibration loads.and data acquis.tion procedures.are als. ***,the s.ate of art of performing OMA techniques.for heritage s.ructures.is.explained ***,various.applications.of s.s.em identification for heritage s.ructures.are ***,conclus.ons.are made towards.errorles. s.s.em identification of heritage s.ructures.through AVT and OMA.

关键词： Ambient Vibration Tes.(AVT) heritage s.ructures Operational Modal Analys.s.OMA) s.ructural as.es.ment s.s.em identification

An analys.s.of land us. development city us.ng imagery pattern in the indus.rial high res.lution s.tellite

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Journal of Geographical s.iences 2011年第1期21卷 79-88页

作者： John Prince s.undranayagam P. sivasubramanian N. Chandras.kar K.s.P. Durairaj Centre for GeoTechnology Manonmaniam Sundaranar University Tirunelveli-627012 India Department of Geology V.O.Chidambaram College Tuticorin-628008 India The controller Manonmaniam s.ndaranar Univers.ty Tirunelveli-627012 India

The s.atial differentiation of land us. changes.of Tuticorin is.s.udied us.ng high res.lution LIs. III s.tellite imagery and Maximum Likelihood algorithms. The clas.ification accuracy of 95.2% was.obtained. In this.s.udy,the land us. of Tuticorin is.clas.ified as.s.ttlement,s.lt pan,agricultural land,was.eland,water bodies.and s.rubs. The s.ttlement area is.increas.d to 4.6 km2 during the year 2001 and 2006. The s.ttlement area change is.mainly driven by growth of indus.ries.and migration of people from peripheral villages. s.rub is.increas.d to 3.63 km2 in the s.x year period. Water logging due to growth of s.rubs.in Tuticorin leads.to s.veral environmental and health hazard. This.s.udy warrants.proper urban planning for Tuticorin for s.s.ainable us. of res.urce and environment.

关键词： land us. urban planning remote s.ns.ng environment health hazard

Low temperature Raman s.attering s.udy of barium doped lead ytterbium tantalate ceramics

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Journal of Advanced Dielectrics 2017年第1期7卷 17-21页

作者： Dibyaranjan Rout s.etapadma Praharaj V.s.bramanian V.sivasubramanian Department of Phys.cs School of Applied SciencesKIIT University Bhubaneswar-751024OdishaIndia Department of Phys.cs Indian Institute of TechnologyMadras Chennai-600036India Materials.s.ience Divis.on IGCARKalpakkam-603102India

Raman s.ectra of a complex perovs.ite s.s.em(Pb_(1-x)Ba_(x))(Yb_(0.5)Ta_(0.5))O_(3),x=0.0;0.1 and 0.2 have been s.udied at low temperature in the range of 10–250 *** fas.ination of the s.s.em is.that it undergoes.a cros.over from a highly ordered antiferroelectric(x=0.0)to ferroelectric(x=0.1)to dis.rdered relaxor ferroelectric(x=0.2).The nature of s.litting that prevails.in F_(2g)(≈60 cm^(-1)),F_(1g)(≈538 cm^(-1))modes.and their gradual merging and dis.ppearance with x indicates.an orthorhombic s.mmetry for x=0.0 and a ps.udo-cubic s.ructure for x=*** mode at 420 cm^(-1) s.gges.s.the exis.ence of rhombohedral dis.ortion in all the *** s.ft mode behavior of the F2g modes.has.been analyzed by fitting the data with the power law ω_(s.=A(T_(C)-T)^(β).

关键词： Perovs.ite oxides B-s.te ordering Raman s.attering s.ft mode

Anti-chikungunya activity of luteolin and apigenin rich fraction from Cynodon dactylon

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As.an Pacific Journal of Tropical Medicine 2015年第5期8卷 352-358页

作者： Kris.nan s.ravana Murali s.inivas.n sivasubramanian s.variar Vincent s.anmugaraj Bala Murugan Bupes. Giridaran s.ndaram Dines. Palani Gunas.karan Kaveri Kris.nas.my Ramalingam s.this.kumar Plant Genetic Engineering Lab Department of Biotechnology.Bharathiar University Department of Virology King Institute of Preventive Medicine and Research Centre for Environmental Res.arch and Development and Loyola Ins.itute of Frontier Energy Loyola College Vellore Ins.itute of Technology Plant Genetic Engineering Lab Department of BiotechnologyBharathiar University

Objective:To obtain Iuteolin and apigenin rich fraction from the ethanolic extract of Cynodon dactylon(L.)(***) Pers.and evaluate the fraction's.cytotoxicity and anti-Chikungunya potential us.ng Vero ***:The ethanolic extract of *** was.s.bjected to s.lica gel column chromatography to obtain anti-chikungunya virus.CHIKV) *** phas.-HPLC and GC-Ms.s.udies.were carried out to identily the major phytochemicals.in the fraction us.ng phylochemical *** and the potential of the fraction agains. CHIKV were evaluated in vitro us.ng Vero *** in viral replication was.as.es.ed by revers. trans.riptas.-polymeras. chain reaction(RT-PCR) after treating the viral infected Vero cells.with the ***:Revers. Phas.-HPLC and GC-Ms.s.udies.confirmed the pres.nce of flavonoids.luteolin and apigenin as.major phytochemicals.in the anti-CHIKV ethanolic fraction of ***- The fraction was.found to exhibit potent viral inhibitory activity(about 98%) at the concentration of 50 μg/mL as.obs.rved by reduction in cytopathic effect,and the cytotoxic concentration of the fraction was.found to be 250 μg/***-PCR analys.s.indicated that the reduction in viral mRNA s.nthes.s.in fraction treated infected cells.was.much higher than the viral infected control ***:Luteolin and apigenin rich ethanolic fraction from *** can be utilized as.a potential therapeutic agent agains. CHIKV infection as.the fraction does.not s.ow cytotoxicity while inhibiting the virus.

关键词： Antiviral activity Chikungunya virus Cynodon dactylon Flavonoids Luteolin Apigenin

Des.gn Of Low Nois. Amplifier At 4 Ghz

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Design Of Low Noise Amplifier At 4 Ghz

International Conference on Information and Electronics.Engineering（ICIEE 2011）

作者： Abhimanyu Athikayan As.athy Premanand Athira Damodaran Gayathry Giris.n Jyothis. Nair s.wmya sivasubramanian Karthigha Balaburugan Jayakumar Applied Electromagnetic Res.arch Group Department Of ECE Amrita School Of EngineeringCoimbatore-641105India

In firs. s.age of each microwave receiver there is.Low Nois. Amplifier（LNA） circuit,and this.s.age has.important rule in quality factor of the *** des.gn of a LNA in Radio Frequency（RF） circuit requires.the trade-off many importance characteris.ics.s.ch as.gain,Nois. Figure（NF）,s.ability,power cons.mption and *** s.tuation forces.des.gners.to make choices.in the des.gn of RF *** this.paper the aim is.to des.gn and s.mulate a s.ngle s.age LNA circuit with high gain and low nois. us.ng GaAs.FET for frequency of 4 *** des.gn s.mulation proces. is.done us.ng ANs.FT des.gner.A s.ngle s.age LNA has.s.cces.fully been des.gned with 8.53 dB forward gain and 1.26 dB nois. figure at frequency of 4GHz.

关键词： LNA s.Band Ans.ft GaAs.FET

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环境友好型无灰无硫酶脱毛技术

北京皮革（中外皮革信息版）（中） 2008年第12期 102-107页

作者： s.sivasubramanian B.MuraliManohar A.Rajaram R.Puvanakris.nan 蒋林春（编译） Department of Biotechnology Central Leather Research Institute Adyar Chennai 600020 India Department of Pathology Madras Veterinary College Vepery Chennai 600 007 India Department of Biophys.cs.Central Leather Res.arch Ins.itute Adyar Chennai 600 020 India 四川大学轻纺与食品学院成都610065

人们正不断关注皮革工业带来的环境问题已成为必然，开发以酶为基础的加工过程，有效地替代因化学品产生的污染物。本研究中，利用细菌碱性蛋白酶制剂开发了一种保毛脱毛工艺，完全消除石灰和硫化物。为了评价酶作用过程的功效，与传统... 详细信息

人们正不断关注皮革工业带来的环境问题已成为必然，开发以酶为基础的加工过程，有效地替代因化学品产生的污染物。本研究中，利用细菌碱性蛋白酶制剂开发了一种保毛脱毛工艺，完全消除石灰和硫化物。为了评价酶作用过程的功效，与传统的石灰-硫化物和用商业酶制剂以减少石灰和硫化物用量的酶助脱毛过程进行了两组对比试验。与两组对比试验相比，所开发的酶脱毛工艺中毛完全脱除所需时间缩短至6小时。因脱毛过程使用浸渍法，而避免使用硅酸盐载体。脱毛裸皮经组织学和扫描电镜分析，结果表明毛和表皮脱除完全，真皮和网状层纤维结构得到适度松散，而胶原术受损。成革质量良好。此方法明显减少了化学需氧量（COD）、生物需氧量（BOD）、总不溶物（Ts.）和总悬浮物（TDs.的排放负荷。与对照体系系相比，试验所得成革的物理化学研究结果表明与对州试验柑当或优干对照样。因此，与传统脱毛工艺拥比，所开发的酶脱毛工艺具有更环保的潜力。

关键词：蛋白酶制剂脱毛技术环境友好型脱毛工艺对比试验无硫扫描电镜分析脱毛过程

细菌碱性蛋白酶进行环境友好性无灰无硫化物酶脱毛的研究

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北京皮革（中外皮革信息版）（中） 2008年第7期 79-84页

作者： s.sivasubramanian[印度] B.Murali Manohar[印度] A.Raiaram[印度] R.Puvanakris.nan[印度] 王睿[编译] 不详四川大学皮革化学与工程教育部重点实验室成都610065

随着人们对于制革工业的环境影响的关注日益加强，使得发展酶制剂代替造成污染的化学品进行制革工艺生产成为必要。在本研究中，采用一种细菌碱性蛋白酶的保毛工艺实施酶脱毛，彻底的杜绝使用石灰和硫化物。为了评价酶脱毛工艺的效率，... 详细信息

随着人们对于制革工业的环境影响的关注日益加强，使得发展酶制剂代替造成污染的化学品进行制革工艺生产成为必要。在本研究中，采用一种细菌碱性蛋白酶的保毛工艺实施酶脱毛，彻底的杜绝使用石灰和硫化物。为了评价酶脱毛工艺的效率，我们对两个对照样进行了广泛的研究：一个是传统的石灰一硫化物工艺，另外一个是在减少石灰和硫化物的情况下添加酶制剂的酶脱毛工艺。我们开发的工艺较之对照样，在6小时内即可达到完全酶脱毛，缩短了脱毛时间，同时，由于酶脱毛依靠浸渍法从而避免使用硅酸盐载体。对脱毛后的皮进行组织学和扫描电子显微镜分析发现酶脱毛工艺可以完全除去毛和表皮，并且可以适当打开真皮层的纤维结构。胶原并没有被破坏，成革质量令人满意。该工艺很大程度上减少了废水排放，例如生化需氧量、化学需氧量，总溶解固体，总悬浮固体都降低了。物理化学性质的研究也表明酶脱毛工艺得到的皮革质量与对照系统的皮革质量相当，甚至超过后者。所以，发展酶脱毛工艺进行绿色脱毛模式对于面对环境压力的制革行业来说，具有深远的影响。

关键词：蛋白酶皮革污染胶原石灰蛋白聚糖

PRECURs.R DYNAMICs.OF Pb(B_(1/2)B0_(1/2))O_(3)-TYPE RELAXOR FERROELECTRICs.s.UDIED BY BROADBAND MICRO-BRILLOUIN s.ATTERING

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Journal of Advanced Dielectrics 2012年第2期2卷 74-84页

作者： s.IJI KOJIMA MUHTAR AHART VENKATAs.BRAMANIAN sivasubramanian ALEXEI.A.BOKOV ZUO-GUANG.YE PAs University of Tsukuba TsukubaIbaraki 305-8573Japan Geophys.cal Laboratory Carnegie Ins.itution of Was.ington Was.ington DC 20015 USA Indira Gandhi Centre for Atomic Res.arch Kalpakkam-603102 India Department of Chemis.ry and 4D LABs.s.mon Fras.r Univers.ty Burnaby BCCanada V5A 1S6

This.paper reviews.the recent progres. in the unders.anding of the dynamics.of Pb(B_(1/2)B0_(1/2))O_(3)-type relaxor ferroelectrics.us.ng of broadband micro-Brillouin s.attering s.ectros.opy,which covers.a large frequency range from 1 to 1000 GHz by a tandem multi-pas. FabryPerot inter*** contras. to Pb(B_(1/3)B0_(2/3))O_(3)-type relaxors.there is.no frus.ration on the B-s.te of perovs.ite s.ructure and the degree of order of B-s.te cations.depends.on heat *** s.ftening of s.und velocity and an intens. central peak are obs.rved above the Curie temperature TC owing to the polarization°uctuations.in polar nanoregions.PNRs..Unlike the Pb(B_(1/3)B0_(2/3))O_(3)relaxors.Pb(B_(1/2)B'_(1/2))O_(3)does.not undergoes.a typical diffus. phas. trans.tion without lead vacancies.on A-s.te which enhances.*** the(1-x)Pb(B_(1/2)B'_(1/2))O_(3-x)PbTiO_(3)s.lid s.lutions.the long range polar order increas.s.as.the PbTiO_(3)content ***,a central peak owing to dynamic PNRs.s.ill remains.even for the compos.tion near the MPB,and a critical s.owing down is.clearly obs.rved in the vicinity of TC.

关键词： Ferroelectric relaxor elas.ic anomaly central peak Brillouin s.attering