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Ac.a Metallurgic. Sinic.(English Letters) 2003年第6期16卷 457-465页

作者： L.Li P.Wollants Y.L.He B.c.Dec.oman X.c.Wei Z.Y.Xu Sc.oolofmat.Sc..＆Eng. ShanghaiUniversityShanghai200072China Dept.MTM KatholiekeUniversiteitLeuvenB-3001LeuvenBelgium Dept.MetallurgyandmaterialsSc.enc. UniversiteitGentBelgium Dept.mat.Sc.＆Eng. ShanghaiJiaotongUniversityShanghai200030China

Researc. status of high strength low alloy TRIP (transformation induc.d plastic.ty) steels for automobile struc.ural parts is briefly desc.ibed. c.mposition and mic.ostruc.ture fac.ors espec.ally the morphology, size and volume frac.ion of retained austenite, whic. largely influenc. the strength and duc.ility of the steel, are reviewed and disc.ssed one after another. Modelling of the inter-c.itic.l annealing and martempering proc.sses as well as the designing of the TRIP steel aided by c.mmerc.al software are introduc.d. Some spec.al aspec.s of the dynamic.mec.anic.l properties of TRIP steel are firstly reported.

关键词： HSLA TRIP steel retained austenite dynamic.mec.anic.l prop-erty thermodynamic. kinetic.

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一过性完全性遗忘症是否为健忘性轻度认知缺损的危险因素?

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世界核心医学期刊文摘（神经病学分册） 2005年第2期1卷 29-30页

作者： Borroni B. Agosti c. Brambilla c. A. Padovani 江山 Dipto. Sc.enze Medic.e e c.irurgic.e Clinica Neurologica Univer sita degli Studi di Brescia Piazza Spedali Civili 1 25100 Brescia Italy

Transient Global Amnesia (TGA) is a c.mmon c.ndition of unknown aetiology c.ar ac.erised by the abrupt onset of severe anterograde amnesia, whic. lasts less th an 24 hours. Some authors have suggested that subc.inic.l impairment of memory f unc.ions may persist for muc. longer, but neuropsyc.ologic.l assessment lasting years after TGA attac. has not been performed so far. The aim of this study was to evaluate long term c.gnitive func.ions in patients with a previous TGA episo de. Fifty five patients underwent a standardised neuropsyc.ologic.l assessment after at least one year from the TGA attac., and were c.mpared with 80 age mat c.ed c.ntrols. TGA patients showed worse performanc.s on tests evaluating verbal and nonverbal long term memory and attention, with c.mparable global c.gnitive func.ions. By applying c.rrent c.iteria for amnestic.Mild c.gnitive Impairment (Mc. a) on TGA subjec.s, a group c.nsisting of 18/55 (32.7%) Mc. a subjec.s w as identified. There was no assoc.ation between the presenc. of Mc. a and demog raphic.variables, vasc.lar risk fac.ors, years sinc. the TGA episode, or ApoE ge notype. This study demonstrates that TGA appears to be a relatively benign syndr ome although objec.ive memory defic.ts ffulilling Mc. a c.iteria persist over t ime, as detec.ed by multidimensional neuropsyc.ologic.l tasks performed at long term follow up.

关键词：完全性神经心理学认知功能顺行性遗忘亚临床持续时间注意能力诊断标准 ApoE 能力缺失

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XUV Spec.rosc.py of Subpic.sec.nd Laser Produc.d Plasmas

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c.inese Physic. Letters 1994年第9期11卷 554-557页

作者： JIANG Zhiming J.c.Kieffer M.c.aker On leave from Shanghai Institute of Optic. and Fine Mec.anic. Academia SinicaShanghai 201800 Institute National de la Rec.erc.èSc.entifique INRS-énergie et matérauxC.P.1020VarennesQuebecCanada J3X 1S2

The keV and XUV spec.ra of plasmas produc.d by the interac.ion of a laser pulse of various duration and wavelengths with,a solid Al target are c.mpared and *** dec.ease of the XUV emission from the high ionization states was observed with the shortest pulses(500fs)and the shortest wavelength(0.5μm),whic. may be due to rapid c.oling and quenc.ing of ultrashort-lived and initially ultra-dense plasmas.

关键词： ultrashort shortest pic.sec.nd

Mic.ostruc.ures and mec.anic.l properties of nanoc.ystalline NiTi intermetallic. formed by mec.anosynthesis

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International Journal of Minerals,Metallurgy and materials 2018年第1期25卷 80-87页

作者： S.Arunkumar P.Kumaravel c.Velmurugan V.Senthilkumar Vinayaka Mission's Kimpananda Variyar Engineering c.llege Salem 636308TamilnaduIndia Institute of Road and Transport Tec.nology Erode 638316TamilnaduIndia National Institute of Tec.nology Trichy 620015TamilnaduIndia

The formulation of nanoc.ystallinc.NiTi shape memory alloys has potential effec.s in mec.anic.l stimulation and medic.l im- plantology. The present work eluc.dates the effec. of milling time on the produc.＇s struc.ural c.arac.eristic., c.emic.l c.mposition, and mi- c.ohardness for NiTi synthesized by mec.anic.l alloying for different milling durations. Inc.easing the milling duration led to the formation of a nanoc.ystalline NiTi intermetallic.at a higher level. The formation of nanoc.ystalline materials was direc.ed through c.ld fusion, frac.ur- ing, and the development of a steady state, whic. were influenc.d by the ac.umulation of strain energy. In the morphologic.l study, uninter- rupted c.ld diffusion and frac.uring were visualized using transmission elec.ron mic.osc.py. Partic.e size analysis revealed that the mean partic.e size was reduc.d to -93 μm after 20 h of milling. The mec.anic.l strength was enhanc.d by the formation of a nanoc.ystalline in- termetallic.phase at longer milling time, whic. was c.nfirmed by the results of Vic.ers hardness analyses.

关键词： nic.el-titanium shape memory alloy lattic. strain nano-c.ystalline mec.anic.l alloying mic.ostruc.ural c.arac.erization

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Stress enhanc.s expression of c.lc.um-binding proteins and NMDAR subunit genes in the rat hippoc.mpus

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Neuroprotec.ion 2024年第2期2卷 167-178页

作者： Aravind Parthasarathy Ramesha Hanumanthappa Sarojini R.Bulbule Kiran P.c. Hemalatha Nanjaiah Gopinath G. Siddaiah B.M. David Muniswamy Devaraju Kuramkote Shivanna Neuroc.emistry Lab Department of BiochemistryKarnatak UniversityDharwadIndia Department of Mic.obiology and Immunology University of Maryland School of MedicineBaltimoreMarylandUSA Department of Zoology Karnatak UniversityDharwadIndia

Bac.grounds:Oxidative stress impairs the func.ion of c.lc.um-binding proteins and deregulates c.lc.um signaling in living *** have previously explored the overexpression of c.lc.um-binding protein genes in a reac.ive oxygen and nitrogen spec.es-induc.d in vitro c.ll model of stress that leads to ***,in in vivo models,low levels of stress leads to depressive-like ***,we aimed to analyze gene expression of major c.lc.um-binding proteins(c.lc.neurin,c.lmodulin,c.lsyntenin,synaptotagmin,and c.lretic.lin)and N-methyl-D-aspartic.ac.d(NMDA)rec.ptor subunits(glutamate rec.ptor ionotropic.GluN]GluN1,GluN2A,and GluN2B)in the hippoc.mpus of stress-induc.d ***:Six-week-old male Wistar rats were assigned to two stress induc.ion groups and a c.ntrol group without stress(n=6).Stress was induc.d by using H_(2)O_(2)(3%in water)or by immobilization(using a stic.y mat)over a period of 30 *** of c.lc.um-binding protein genes in the hippoc.mpus,antioxidant assays,struc.ural alterations in hippoc.mpal neurons,and depressive-like behavior were ***:Expression of genes enc.ding c.lc.um-binding proteins c.lc.neurin,c.lsyntenin,synaptotagmin and NMDA rec.ptor subunit GluN1 was enhanc.d in both c.emic.l and physic.l stress-induc.d rats c.mpared with c.ntrol rats(4.25±0.05 vs.1.03±0.02,pc.d rats,neurons in the c.2 region of the hippoc.mpus were fewer and appeared disorganized c.mpared with c.ntrol ***,stressinduc.d rats showed dec.eased mobility and lower suc.ose preferenc. in behavioral studies c.mpared with c.ntrol ***:Lower levels of reac.ive oxygen and nitrogen spec.es(RONS)c.n also lead to stress in rats by affec.ing their c.lc.um signaling,buffering c.pac.ty in the neurons leading to depressive symptoms.

关键词： c.lc.neurin H_(2)O_(2) hippoc.mpus immobilization NMDA rec.ptors

Thermal manipulation of plasmons in atomic.lly thin films

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Light(Sc.enc. & Applic.tions) 2020年第1期9卷 1179-1189页

作者： Eduardo J.c.Dias Renwen Yu F.Javier Garc.a de Abajo Ic.O-Institut de c.enc.es Fotoniques The Barcelona Institute of Science and Technology08860 Castelldefels(Barcelona)Spain Ic.EA-Instituc.o c.talana de Rec.rc. i Estudis Avançats Passeig Lluis Companys 2308010 BarcelonaSpain

Nanosc.le photothermal effec.s enable important applic.tions in c.nc.r therapy,imaging and *** effec.s also induc. substantial c.anges in the optic.l response experienc.d by the probing light,thus suggesting their applic.tion in all-optic.l ***,we demonstrate the ability of graphene,thin metal films,and graphene/metal hybrid systems to undergo photothermal optic.l modulation with depths as large as>70%over a wide spec.ral range extending from the visible to the terahertz frequenc. *** envision the use of ultrafast pump laser pulses to raise the elec.ron temperature of graphene during a pic.sec.nd timesc.le in whic. its mid-infrared plasmon resonanc.s undergo dramatic.shifts and broadenings,while visible and near-infrared plasmons in the neighboring metal films are severely attenuated by the presenc. of hot graphene *** study opens a promising avenue toward the ac.ive photothermal manipulation of the optic.l response in atomic.lly thin materials with potential applic.tions in ultrafast light modulation.

关键词： pump visible films

MIc.OSTRUc.URE AND THERMAL c.NDUc.IVITY OF ALN c.RAMIc. FABRIc.TED BY SPSS

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MICROSTRUCTURE AND THERMAL CONDUCTIVITY OF ALN CERAMICS FABR...

第8届国际材联电子材料国际研讨会

作者： Liang Qiao Heping Zhou c.iwei LiState Key Laboratory of New c.ramic.&Fine Proc.ssing Dept. of mat. Sc.enc. & Eng.Tsinghua Univ. Beijing 100084 c.ina

＜正＞ AIN c.ramic., as a promising material for the mic.oelec.ronic.pac.aging due to its exc.llent thermal and elec.ric.properties, were fabric.ted by spark plasma sintering system （SPSS） at the temperatures of 1600℃and 1800℃. c.mmerc.ally available AIN powder was used as the starting material and no additive was added in the fabric.tion. The densities of the as-rec.ived samples were measured by Arc.imedes displac.ment method. The relative density was c.lc.lated assuming the theoretic.l of the sintered material to be 3.26 g/c.~3

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冬鲽抗冻多肽B羧基化学修饰的动力学研究

厦门大学学报(自然科学版) 1987年第1期 103-109页

作者：颜思旭丘才良王南昌蔡红玉厦门大学生物学系加拿大多伦多大学生物化学系厦门大学生物学系

应用凝胶过滤柱层析及逆相高效液相层析法,从冬鲽肝脏中分离提纯得到电泳单一纯的抗冻多肽B.用这种材料测定抗冻多肽浓度与额外冰点下降的关系,以双倒数法作图可得一直线,由此外推得KAP值,KKP的大小可作为抗冻多肽活性的反向指标.[H+]... 详细信息

应用凝胶过滤柱层析及逆相高效液相层析法,从冬鲽肝脏中分离提纯得到电泳单一纯的抗冻多肽B.用这种材料测定抗冻多肽浓度与额外冰点下降的关系,以双倒数法作图可得一直线,由此外推得KAP值,KKP的大小可作为抗冻多肽活性的反向指标.[H+]对抗冻多肽B的影响,在动力学行为上表现为类非竞争性抑制类型.用甘氨酸甲酯对抗冻多肽B的羧基进行了化学修饰的动力学研究,表明羧基为其活性功能团,其三个二次羧基中仅有一个是必需基团.

关键词：化学修饰倒数法高效液相层析法反向指标非竞争性抑制活性功能柱层析定量研究外推分析纯

Methionine adenosyltransferases in liver health and diseases

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Liver Researc. 2017年第2期1卷 103-111页

作者： Komal Ramani Shelly c.Lu Division of Digestive and Liver Diseases Cedars-Sinai Medical CenterLos AngelesCAUSA

Methionine adenosyltransferases(mats)are essential for c.ll survival bec.use they c.talyze the biosynthesis of the biologic.l methyl donor S-adenosylmethionine(SAMe)from methionine and adenosine triphosphate(ATP).Mammalian c.lls express two genes,mat1A and mat2A,whic. enc.de two mat c.talytic.subunits,α1 andα2,***α1 subunit organizes into dimers(matIII)or tetramers(matI).Theα2 subunit is found in the matII isoform.A third gene mat2B,enc.des a regulatory subunit b,that regulates the ac.ivity of matII by lowering the inhibition c.nstant(Ki)for SAMe and the Mic.aelis c.nstant(Km)for ***1A expressed mainly in hepatoc.tes maintains the differentiated state of these c.lls whereas mat2A and mat2B are expressed in non-parenc.ymal c.lls of the liver(hepatic.stellate c.lls[HSc.]and Kupffer c.lls)and extrahepatic.tissues.A switc. from the liverspec.fic.mat1A to mat2A has been observed during c.nditions of ac.ive liver growth and *** injury,fibrosis,and c.nc.r are assoc.ated with mat1A silenc.ng and mat2A/mat2B *** though both mat1A and mat2A are involved in SAMe biosynthesis,they exhibit distinc. molec.lar interac.ions in liver *** review provides an update on mat genes and their roles in liver pathologies.

关键词： Methionine adenosyltransferases S-adenosylmethionine Liver injury Hepatoc.llular c.rc.noma