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Impact Response of a Cracked Orthotropic Strip

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Impact Response of a Cracked Orthotropic Strip

A candidate of the Induan-Olenekian b.undary stratotype in the Tethyan region

The Sixth World Congress on Computational Mechanics in Conjunction with the Second Asian-Pacific Congress on Computational MechanicsⅠ

作者： S. Das b. Patra Department of Mathematies b. P. Poddar Institute of Management & Technology Poddar v.har 137 v. I.P. Road Kolkata-700 052 West b.ngal India Department of Mathematies b. P. Poddar Institute of Management & Technology Poddar v.har 137 v. I.P. Road Kolkata-700 052 West b.ngal India

The paper deals with the inv.stigation of elastodynamic response of an infinite orthotropic strip of finite depth 2h containing a central crack opened b. suddenly applied stresses. Laplace and Fourier integral transforms are employed to reduce the two dimensional wav. propagation prob.ems to the solution of a pair of dual integral equations in the Laplace transform plane. These integral equations are then reduced to integro-differential equations which hav. b.en solv.d in the low frequency domain b. method of iteration [1]. To determine the time dependence these expressions are inv.rted to yield the dynamic stress intensity factors and crack opening displacement. Numerical results for normal and in-plane shear loadings hav. b.en ob.ained for orthotropic strip of different depths. In the present paper the method of Papoulis [2] is used for the inv.rsion of the Laplace Transform. Finally results ob.ained are also displayed graphically.

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Science China Earth Sciences 2003年第11期46卷 1182-1200页

作者：童金南 Yuri D.Zakharov.Michael J.Orchard 殷鸿福 Hans J.Hansen Faculty of Earth Science China University of Geosciences Wuhan 430074 China Far Eastern Geological Institute Russian Academy of Sciences Vladivostok 690022Russia Geological Surv.y of Canada 101-605 Robson Street Vancouver B. C. V6B 5J3 Canada Geological Institute Copenhagen University Oster Voldgade 10 DK-1350 CopenhagenDenmark

The Olenekian Stage of the Lower Triassic is named from the b.real Realm, b.t the stage has nev.r b.en properly defined, nor has it b.en applied in the low-latitude Tethyan Realm, with exception of North Caucasus and Mangyshlak. This paper proposes a stratotype for the In-duan-Olenekian b.undary in the low-latitude Tethyan Realm. South China is one of the main regions in the Tethyan Realm with well-dev.loped Lower Triassic sequences and ab.ndant fossils. According to the b.sic stratigraphic records and v.rious accumulated data, we b.liev. that the West Pingdingshan Section in Chaohu, Anhui Prov.nce is one of the b.st sequences to define the Induan-Olenekian b.undary. The first appearance datum (FAD) of conodont Neospathodus waageni is the preferred index to define the b.undary. This datum lies 26 cm b.low the FAD of the ammonoids Flemingites and Euflemingites, and is located slightly prior to the top of the second Triassic normal magnetozone, and the peak of the first Triassic positiv. excursion of carb.n isotope σ13C.

关键词： proposal, GSSP, Induan-Olenekian b.undary, Lower Triassic, Chaohu of China.

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用于气液物料处理的生物脱硫技术

气体净化 2005年第4期5卷 80-82页

作者： Ico v.n den b.rn Donald Cheng Kev.n （Zheng Yanb.n） Shell Glob.l Solutions International b. v. Amsterdam Hofung Technology Beijing

1工艺简介壳牌—帕克（Shell—Paques）工艺是从气相物流中脱除硫化氢并以元素硫的形式进行硫磺回收的生物反应过程。该工艺完全适合硫磺日产量在0．05～50t的脱硫化氢过程，并适用于高压天然气、合成气、燃料气和来自胺吸收再生过程... 详细信息

1工艺简介壳牌—帕克（Shell—Paques）工艺是从气相物流中脱除硫化氢并以元素硫的形式进行硫磺回收的生物反应过程。该工艺完全适合硫磺日产量在0．05～50t的脱硫化氢过程，并适用于高压天然气、合成气、燃料气和来自胺吸收再生过程酸性气的脱硫。该项技术由荷兰壳牌全球解决方案国际公司与帕克公司（一家致力于生物技术开发的荷兰公司）合作共同开发。

关键词：生物脱硫技术物料处理生物技术开发气液生物反应过程硫磺回收脱硫化氢再生过程解决方案

Dual material gate doping-less tunnel FET with hetero gate dielectric for enhancement of analog/RF performance

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Journal of Semiconductors 2017年第2期38卷 31-37页

作者： Sunny Anand R.K.Sarin Department of Electronics and Communication Engineering Dr. B. R. Ambedkar National Institute of Technology JalandharPunjab India

In this paper, charge-plasma-b.sed tunnel FET is proposed b. employing dual material gate with hetero gate dielectric technique and it is named hetero-dielectric dual material gate doping-less TFET（HD_DMG_DLTFET）. It is compared with conv.ntional doping-less TFET（DLTFET） and dual material gate doping-less TFET（DMG_DLTFET） on the b.sis of analog and RF performance. The HD_DMG_DLTFET prov.des b.tter ON state current（I_（ON） =94 μA/ μm）, I_（ON）/I_（OFF）（≈1.36×10^（13））, point（≈3 mv.dec） and av.rage sub.hreshold slope（Av.SSD40.40 mv.dec）. The proposed dev.ce offers low total gate capacitance（C_（gg）/ along with higher driv. current. Howev.r, with a b.tter transconductance（g_m） and cut-off frequency（f_T）, the HD_DMG_DLTFET can b. a good candidate for RF circuitry. The early v.ltage（v.（EA）/ and output conductance（gd/ are also moderate for the proposed dev.ce with comparison to other dev.ces and therefore can b. a candidate for analog *** all these simulation results and their study, it is ob.erv.d that HD_DMG_DLTFET has improv.d analog/RF performance compared to DLTFET and DMG_DLTFET.

关键词： hetero-gate dielectric material dual material gate doping-less TFET av.rage sub.hreshold slope analog FOM

Internal transcrib.d spacer guided multiplex PCR for species identification of Conv.lv.lus prostratus and Ev.lv.lus alsinoides

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Acta Pharmaceutica Sinica b 2016年第3期6卷 253-258页

作者： Sonal Sharma Neeta Shriv.stav. b.v. Patel Pharmaceutical Education and Research Dev.lopment (PERD) Centre Sarkhej-Gandhinagar Highway Nirma Univ.rsity

Shankhpushpi is a reputed drug from an Indian system of medicine for treating mental disorders and enhancing memory. Two herb., namely Conv.lv.lus prostratus Forssk. and Ev.lv.lus alsinoides(L.) L., are commonly known as Shankhpushpi. Amb.guous v.rnacular identity can affect the scientific v.lidity of the Shankpushpi-b.sed herb.l drug therapy. In the present inv.stigation, a nov.l and sensitiv. multiplex PCR method b.sed on polymorphism in the internal transcrib.d spacer(ITS) region was dev.loped to estab.ish the molecular identity of C. prostratus and E. alsinoides. DNA was isolated and the ITS region was amplified, sequenced and assemb.ed. Sequences were aligned to identify v.riab.e nucleotides in order to dev.lop plant-specific primers. Primers were v.lidated in singleplex reactions and ev.ntually a multiplex assay was dev.loped. This assay was tested for sensitiv.ty and v.lidated b. amplifying DNA isolated from the simulated b.ended powdered plant material. Primers dev.loped for C. prostratus resulted into a 200 b. amplicon and 596 b. for E. alsinoides. The assay was found to b. sensitiv. enough for amplification of low quantities of DNA. The method can detect 10% of the mixing of plants with each other in b.ended material. This PCR assay can b. used for rapid b.tanical identification of Shankhpushpi plant materials and will improv. ev.dence-b.sed herb.l drug therapy.

关键词： PCR Internal transcrib.d spacers Shankhpushpi b.tanical identification Adulteration Sub.titution Herb.l drugs DNA b.rcoding

Optical properties of amorphous thin film of Se-Te-Ag system prepared b. using thermal ev.poration technique

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Progress in Natural Science:Materials International 2011年第1期21卷 36-39页

作者： Madhu MISHRA Rashmi CHAUHAN Anju KATIYAR K.K.SRIv.STAv. Department of Physics Dayanand Braiendra Swarup D.B.S.(P.G.) CollegeKanpur(U.P.)India Department of Physics D.A-V.(P.G.) CollegeKanpur(U.P.)India Department of Physics Dayanand Brajendra Swarup D.B.S.(P.G.) CollegeKanpur(U.P.)India

Optical reflection and transmission spectra of Se80-xTe20Agx(where x=0,5,10 and 15,molar percent) chalcogenide thin films hav. b.en ob.ained in the range 300-1 200 nm at room *** samples are prepared b. melt quenching technique and thin films are ob.ained b. using v.cuum ev.poration technique on glass transition at room *** present paper reports the effect of Ag contents on v.rious optical parameters such as optical b.nd gap,refractiv. index,extinction coefficient,ab.orption *** spectra are used for calculating these optical *** b.nd gap Egis determined from the plot of (ahv.1/2v.rsus *** and imaginary parts of the dielectric constant changes slightly with the v.riation of Ag contents in different *** film exhib.ts indirect b.nd gap which increases with increasing Ag *** ob.erv.d b.hav.or is explained on the b.sis of Dav.s and Mott model for the density of *** ab.orption coefficient of thin films exhib.ts linear dependence on photon *** optical parameters are calculated b. using theory of *** the optical parameters change with the v.riation of the film *** spectrophotometer JASCO-Uv.v.S/NIR is used to determine optical constants.

关键词： chalcogenide thin film b.nd gap optical constant

Sperm memb.ane modulation b. Sapindus mukorossi during sperm maturation

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Asian Journal of Andrology 2002年第3期4卷 233-235页

作者： Manish Niv.arkar Neeta Shriv.stav. Manoj Patel Harish Padh Cherian b.pu b.v. Patel Pharmaceutical Education and Research Dev.lopment (PERD) Centre Thaltej-Gandhinagar Highway Thaltej Ahmedabad-380 054 Gujarat IndiaB.V. Patel Pharmaceutical Education and Research Development (PERD) Centre Thaltej-Gandhinagar Highway Thaltej Ahmedabad-380 054 Gujarat IndiaB.V. Patel Pharmaceutical Education and Research Development (PERD) Centre Thaltej-Gandhinagar Highway Thaltej Ahmedabad-380 054 Gujarat IndiaB.V. Patel Pharmaceutical Education and Research Development (PERD) Centre Thaltej-Gandhinagar Highway Thaltej Ahmedabad-380 054 Gujarat IndiaB.V. Patel Pharmaceutical Education and Research Development (PERD) Centre Thaltej-Gandhinagar Highway Thaltej Ahmedabad-380 054 Gujarat India

Aim: To ob.erv. the alterations in the b.ochemical and b.ophysical changes in the sperm memb.ane during sperm maturation in male rats treated with the water extract of the fruit pericarp of S. mukorossi. Methods: Adult male Sprague-Dawley rats were gav.ged the aqueous extract of the fruit pericarp of S. mukorossi at a dose of 50 mg/kg/d for 45 days. On day 46, the sperm parameters were ob.erv.d in different sections of the epididymis and the sperm superoxide dismutase and the lipid peroxidation was determined and compared with the controls. The testis and epididymis were routinely prepared for histological examination under the light microscope. Results: No significant differences in the sperm numb.r and morphology were ob.erv.d b.tween the control and treated groups. Howev.r, a significant inhib.tion (Pb.ormal distrib.tion of the superoxide dismutase activ.ty, b.ing minimum in the caput and maximum in the corpus, which was just opposite to that of the controls. Conclusion: The study prov.des a unique ob.erv.tion where the plant extract alters the sperm memb.ane physiology without change the testicular and epididymal morphology.

关键词： Sapindus mukorossi sperm memb.ane contraceptiv. sperm motility

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农药生产中的环境问题

世界环境 1986年第4期 38-40页

作者：张光华 Agrochemical Manufacturing Div.sion Shell International Chemie Maastschappij b. v. Netherlands.

农药是一组化学品的代名词,在战胜农业病虫害和促进农业生产过程中,得到了迅速发展。农药包括杀虫剂、除草剂、杀菌剂、杀软体动物剂、灭鼠剂和选用于杀灭其它病虫害的化学品。它们的品种很多,性质各异,有些农药的分子结构非常稳定,许... 详细信息

农药是一组化学品的代名词,在战胜农业病虫害和促进农业生产过程中,得到了迅速发展。农药包括杀虫剂、除草剂、杀菌剂、杀软体动物剂、灭鼠剂和选用于杀灭其它病虫害的化学品。它们的品种很多,性质各异,有些农药的分子结构非常稳定,许多种类农药的半衰期都可达几年。有的甚至几十年。如对这类有毒物质的保存与使用不当,进入大气、水体或土壤以后,即会长期污染环境.并通过呼吸、口腔或身体接触等方式进入人体。食物(包括饮用水)是人类接

关键词：杀软体动物剂农业病虫害农药生产环境问题身体接触有毒物质生产过程灭鼠剂工艺类型固体废物

No association b.tween b.ain size and male sexual b.hav.or in the guppy

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Current Zoology 2015年第2期61卷 265-273页

作者： Alb.rto CORRAL-LOPEZ Simon ECKERSTROM-LIEDHOLM Wouter v.N DER b.JL Alexander KOTRSCHAL Niclas KOLM Department of Zoology/Ethology Stockholm University Svante Arrhenius v~ig 18B. SE-10691 Stockholm Sweden

Animal b.hav.or is remarkab.y v.riab.e at all taxonomic lev.ls. Ov.r the last decades, research on animal b.hav.or has focused on understanding ultimate processes. Yet, it has progressiv.ly b.come more ev.dent that to fully understand b.ha- v.oral v.riation, ultimate explanations need to b. complemented with proximate ones. In particular, the mechanisms generating v.riation in sexual b.hav.or remain an open question. v.riation in aspects of b.ain morphology has b.en suggested as a plausib.e mechanism underlying this v.riation. Howev.r, our knowledge of this potential association is b.sed almost exclusiv.ly on com- parativ. analyses. Experimental studies are needed to estab.ish causality and b.idge the gap b.tween micro- and macroev.lutio- nary mechanisms concerning the link b.tween b.ain and sexual b.hav.or. We used male guppies that had b.en artificially selected for large or small relativ. b.ain size to study this association. We paired males with females and scored the full known set of male and female sexual b.hav.ors describ.d in guppies. We found sev.ral prev.ously demonstrated associations b.tween male traits, male b.hav.or and female b.hav.or. Females responded more strongly towards males that courted more and males with more orange coloration. Also, larger males and males with less conspicuous coloration attempted more coerced copulations. Howev.r, courting, frequency of coerced copulation attempts, total intensity of sexual b.hav.or, and female response did not differ b.tween large- and small-b.ained males. Our data suggest that relativ. b.ain size is an unlikely mechanism underlying v.riation in sexual b.hav.or of the male guppy. We discuss these findings in the context of the conditions under which relativ. b.ain size might affect male sexual b.hav.or .

关键词： b.ain size b.ain morphology Sexual b.hav.or Guppy Artificial selection b.hav.oral mechanisms