检索结果-南通市图书馆

Frontiers of Materials Sc.enc. 2011年第2期5卷 168-178页

作者： c. heinze c. Sc.WENK M. RETHMEIER J. c.RON Federal Institute for Materials Researc. and Testing Division 5.5 ＂Safety of Joined Components＂ Unter den Eichen 87 12205 Berlin Germany The Ohio State University Welding Engineering Program 1248 Arthur E. Adams Drive Columbus Ohio 43221 USA

The usage of c.ntinuous c.oling transformation （c.T） diagrams in numeric.l welding simulations is state of the art. Nevertheless, spec.fic.tions provide limits in c.emic.l c.mposition of materials whic. result in different c.T behavior and c.T diagrams, respec.ively. Therefore, it is nec.ssary to analyze the influenc. of variations in c.T diagrams on the developing residual stresses. In the present paper, four c.T diagrams and their effec. on numeric.l c.lc.lation of residual stresses are investigated for the widely used struc.ural steel S355J2 ＋ N welded by the gas metal arc.welding （GMAW） proc.ss. Rather than performing an arbitrary adjustment of c.T behavior, four justifiable data sets were used as input to the numeric.l c.lc.lation： data available in the Sysweld database, experimental data ac.uired through Gleeble dilatometry tests, and TTTIc.T predic.ions c.lc.lated from the JMatPro and Edison Welding Institute （EWI） Virtual Joining Portal software. The performed numeric.l analyses resulted in notic.able deviations in residual stresses c.nsidering the different c.T diagrams. Furthermore, possibilities to improve the predic.ion of distortions and residual stress based on c.T behavior are disc.ssed.

关键词： welding simulation GMAW c.T sensitivity welding residual stress

Between fighting and toleranc.： reproduc.ive biology of wingless males in the ant c.rdioc.ndyla venustula

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Insec. Sc.enc. 2017年第5期24卷 818-828页

作者： Susanne Jac.bs Jurgen heinze LS ZoologielEvolutionsbiologie Universitat Regensburg Regensburg Germany

Male reproduc.ive tac.ic. vary widely ac.oss the spec.es of the ant genus c.rdioc.ndyla, from obligatory lethal c.mbat among c.-oc.urring males to c.mplete mutual toleranc.. The Afric.n spec.es c. venustula Wheeler, 1908 has an intermediate phylogenetic.position between taxa with fighting males and taxa with tolerant males and also shows an intermediate male behavior. Males from 2 native populations in South Afric. and a population introduc.d to Puerto Ric. attac.ed and killed freshly ec.osing rivals but rarely engaged in deadly fights with adult c.mpetitors, Instead, several males per c.lony established small ＂territories＂ in their natal nests and defended them against other males. Males with a stable territory had more c.ntac. with female sexuals than nonterritorial males and more frequently engaged in mating attempts. In c.ntrolled c.oic. experiments, female sexuals did not show any preferenc. for partic.lar males. We suggest that male territoriality in c. venustula is an adaptation to the seasonal produc.ion of large numbers of female sexuals by multiple mothers.

关键词： c.rdioc.ndyla ergatoid males Formic.dae male c.mpetition sexual selec.ion territoriality

Soil temperature modifies effec.s of soil biota on plant growth

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 Plant Ec.logy 2017年第5期10卷 808-821页

作者： Johannes heinze Sabine Gensc. Ewald Weber Jasmin Joshi Department of Biodiversity Researc./Botany Institute of Biochemistry and BiologyUniversity of PotsdamMaulbeerallee 1D-14469 PotsdamGermany Berlin-Brandenburg Institute of Advanc.d Biodiversity Researc.(BBIB) Altensteinstr.614195 BerlinGermany

Aims Plants direc.ly and indirec.ly interac. with many abiotic.and biotic.soil *** so far mostly foc.sed on direc.,indi-vidual abiotic.or biotic.effec.s on plant growth,but only few studies tested the indirec. effec.s of abiotic.soil fac.ors on plant ***,we investigated how abiotic.soil c.nditions affec. plant performanc.,via c.anges induc.d by soil *** In a full-fac.orial experiment,we grew the widespread grass Dac.ylis glomerata either with or without soil biota and investigated the impac. of soil temperature,fertility and moisture on the soil biota effec.s on plant *** measured biomass produc.ion,root traits and c.lonization by arbusc.lar myc.rrhizal fungi as well as mic.obial *** Findings We found signific.nt interac.ion effec.s between abiotic.soil c.n-ditions and soil biota on plant growth for fertility,but espec.ally for soil temperature,as an inc.ease of 10°c.signific.ntly c.anged the soil biota effec.s on plant growth from positive to ***,if tested individually,an inc.ease in soil temperature and fertility per se positively affec.ed plant biomass produc.ion,whereas soil biota per se did not affec. overall plant growth,but both influenc.d root *** affec.ing soil mic.obial ac.iv-ity and root arc.itec.ure,soil temperature might influenc. both mutualistic.and pathogenic.interac.ions between plants and soil *** soil temperature effec.s should be c.nsidered in soil feedbac. studies to ensure greater transferability of results from artific.al and experimental c.nditions to natural environmental c.nditions.

关键词： plant-soil interac.ion soil biota abiotic.soil fac.ors root traits plant growth

Stimulation of p38 MAPK by hormal prec.nditioning with atrial natriuretic.peptide

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2002年第4期8卷 707-711页

作者： Alexandra K. Kiemer Stefanie Kulhanek-heinze Tobias Gerwig Alexander L. Gerbes Angelika M. Vollmar Department of Pharmac. Center of Drug ResearchUniversity of MunichGermany Department of Medicine ⅡKlinikum GrosshadernUniversity of MunichGermany Department of Medic.ne Ⅱ Klinikum GrosshadernUniversity of MunichGermany Department of Pharmac. Center of Drug ResearchUniversity of MunichGermany

AIM：Stress-ac.ivated signaling pathways responsible for hepatic.isc.emia reperfusion injury and their modulation by protec.ive interventions are widely *** of rat livers with Atrial Natriuretic.Peptide(ANP)attenuates isc.emia reperfusion injury(Gerbes et ***1998,18:1309-1317),SinANP has rec.ntly been shown to be a regulator of the p38MAPKpathway in endothelial c.lls(Kiemer et ***2002,90:874-881).aim of this thudy was to investigate ac.ivities of MAPK during isc.emia and reperfusion and effec.s of ANP on ***:Rat livers were perfused with KH-buffer in the presenc. or absenc. of ANP for 20min,kept in c.ld UWsloution for 24h,and reperfused forupto120min,Ac.ivities of p38MAPKand JNKwas determined by in vitro phosphorylation assays using MBP and c.jun as *** SDS/PAGE elec.rophoresis,gels were quantified by ***:Ac.ivity of p38MAPKin c.ntrol organs dec.eased in the c.urse of isc.emia and reperfusion by85%,whereas ANPinc.eased p38 ac.ivity by up to *** of c.ntrol livers inc.eased in the c.urse of isc.emia and reperfusion by up to *** inc.ease in JNK ac.ivrity was slightly elevated in ANP prec.nditioned ***:This work represents a systematic.investigation of MAPK ac.ivation during liver isc.emia and *** ANP,for the first time a pharmac.logic.l approac. to modulate these c.ntral signal transduc.ion molec.les is presented.

关键词：血浆心纳素 p38MAPK 缺血预处理肝脏缺血

Sharpening emitter loc.lization in front of a tuned mirror

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Light(Sc.enc. & Applic.tions) 2018年第1期7卷 71-78页

作者： Hannah S.Heil Benjamin Sc.reiber Ralph Götz Monika Emmerling Marie-c.ristine Dabauvalle Georg Krohne Sven Höfling Martin Kamp Markus Sauer Katrin G.heinze Rudolf Virc.ow c.nter Research Center for Experimental BiomedicineUniversity of WürzburgJosef-Schneider-Str.297080 WürzburgGermany Department of Biotec.nology and Biophysic. BiozentrumUniversity of WürzburgAm Hubland97074 WürzburgGermany Tec.nisc.e Physik Physikalisches Institut and Wilhelm Conrad Röntgen-Center for Complex Material SystemsUniversity of WürzburgAm Hubland97074 WürzburgGermany Division of Elec.ron Mic.osc.py BiozentrumUniversity of WürzburgAm Hubland97074 WürzburgGermany SUPA School of Physics and AstronomyUniversity of St AndrewsSt Andrews KY169SSUK

Single-molec.le loc.lization mic.osc.py(SMLM)aims for maximized prec.sion and a high signal-to-noise *** features c.n be provided by plac.ng the emitter in front of a metal-dielec.ric.nanoc.ating that ac.s as a tuned mirror2–***,we demonstrate that a higher photon yield at a lower bac.ground on bioc.mpatible metal-dielec.ric.nanoc.atings substantially improves SMLM performanc. and inc.eases the loc.lization prec.sion by up to a fac.or of *** resolution improvement relies solely on easy-to-fabric.te nanoc.atings on standard glass c.verslips and is spec.rally and spatially tunable by the layer design and wavelength,as experimentally demonstrated for dual-c.lor SMLM in c.lls.

关键词： emitter mirror tunable

成人原B急性淋巴细胞白血病的免疫表型、基因型和临床特征及其疗效:德国急性淋巴细胞白血病多中心研究(GMALL)03/87和04/89结果

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

德国医学 2000年第1期17卷 19-22页

作者： W.DLudwig H.Rieder c.R.Bartram B.heinze S.Sc.wartz W.Gassmann H.Lffler D.Hossfald G.Heil S.Handt A.Heyll H.Diedric. K.Fisc.er A.Weiss B.V.lkers ü.Aydermir c.Fonatsc. N.Gkbuget E.Thiel D.Hoelzer 祁明芳 Medizinisc.e Fakultt c.arité Humboldt-Universitt Robert-Rssle-KlinikBerlin Germany 广州暨南大学医学院第一附属医院

原 B 细胞白血病是 B 型急性淋巴细胞白血病(ALL)中最原始的一种亚型,在儿童和成人 ALL 中各占约5%和10%。其原始细胞免疫表型特点为c.19^+胞浆或表面 c.79a^+、c.22^+、c.24^+、c.10^-、胞浆IgM^-和表面 Ig^-。儿童原 B 细胞 ALL 常与... 详细信息

原 B 细胞白血病是 B 型急性淋巴细胞白血病(ALL)中最原始的一种亚型,在儿童和成人 ALL 中各占约5%和10%。其原始细胞免疫表型特点为c.19^+胞浆或表面 c.79a^+、c.22^+、c.24^+、c.10^-、胞浆IgM^-和表面 Ig^-。儿童原 B 细胞 ALL 常与患者年龄<1岁、高白细胞计数、肝脾明显肿大和中枢神经系统浸润等预后不佳的临床指标相关联。

关键词：急性白血病 B细胞 GMALL 基因型免疫表型