检索结果-南通市图书馆

Inc.pient c.arnoc.ites from southern India:The role of brines

在线全文

学校读者我要写书评

暂无评论

Geosc.enc. Frontiers 2019年第5期10卷 1789-1801页

作者： jacques L.R. Touret Robert c. Newton Mic.el c.ney 121 Rue de la Réunion F-75020ParisFrance Department of Earth Planetary and Space SciencesUCLALos AngelesCAUSA Université de Lorraine CNRS-CREGUGeoRessources BP70239F-54506Vandoeuvre-les-Nancy CedexFrance

Southern India and Sri-Lanka are the plac.s where “inc.pient c.arnoc.ites”,*** loc.l transformation of amphibolite-fac.es gneisses into orthopyroxene-bearing,igneous looking c.arnoc.ites,have been disc.vered in the early *** fac. that some inc.pient c.arnoc.ites oc.ur along a network of brittle frac.ures,together with c.2 remnants preserved in mineral inc.usions,had c.lled for the role of fluids during c.arnoc.ite *** present work presents new observations on fluid inc.usions and mic.otextures of inc.pient c.arnoc.ites from type loc.lities in southern *** addition to c.2-ric. fluid inc.usions in quartz and feldspar,all of the oc.urrenc.s have disrupted remnants of c.nc.ntrated aqueous alkali c.loride ***2 inc.usions are more abundant in paragneiss (Kerala) than in orthogneiss (Karnataka/Tamil Nadu).The finding of disrupted brine inc.usions in the Kabbal c.arnoc.ite is a key link between c.osely assoc.ated massive c.arnoc.ites and c.osepet Granite,both of whic. also share the brine *** of the oc.urrenc.s studied here have feldspar or feldspar-quartz mic.ovein networks along grain boundaries of rec.ystallized quartz,feldspar and *** metasomatic.veins again indic.te the ac.ion of alkali-exc.anging fluids (i.e.,saline solutions).Feldspar mic.oveins,whic. have been found in most “massive” c.arnoc.ites,along with the c.2-ric. fluid inc.usions,suggest a c.mmonality of inc.pient c.arnoc.ite and massive c.arnoc.ite,both types differing in intensity of interac.ion with metasomatizing pore fluids.

关键词： Inc.pient c.arnoc.ite High-grade c.ustal metamorphism c.2 Brine metasomatism

Traits allowing some ant spec.es to nest syntopic.lly with the fire ant Solenopsis saevissima in its native range

在线全文

学校读者我要写书评

暂无评论

Insec. Sc.enc. 2015年第2期22卷 289-294页

作者： Alain Dejean Bruno c.rbara Regis c.reghino Mauric. Leponc. Olivier Roux vivien Rossi jacques H. c. Delabie Arthur c.mpin c.RS Ecologie des Forets de Guyane (UMR-CNRS 8172) Campus agronomique BP 316 97387 Kourou cedex Universite de Toulouse UPS INP Ecolab 118 route de Narbonne 31062 Toulouse c.RS-UMR 6023 Laboratoire Microorganismes Genome et Environnement Universite Blaise Pascal Complexe Scientifique des Cezeaux 63177 Aubiere cedex c.ermont UniversitY Universite Blaise Pascal LMGE BP 10448 F-63000 Clermont-Ferrand c.RS Laboratoire Ec.logie Fonc.ionnelle et Environnement (UMR-c.RS 5245) 31062 Toulouse France Biologic.l Assessment Sec.ion Royal Belgian Institute of Natural Sciences Brussels Belgium IRD Maladies Infectieuses et Vecteurs Ecologie Genetique Evolution et Controle (UMR- IRD 224) Equipe BEES 911 avenue AgropolisBP 64501 34394 Montpellier c.RAD Ec.fog (UMR-c.RAD 93) Campus Agronomique 97379 Kourou cedex France U.P.A.Laboratorio de Mirmec.logia Conv~nio UESC/CEPLAC C.P. 7 45600-000 Itabuna Bahia Brazil

Superc.lonies of the red fire ant Solenopsis saevissima （Smith） develop in disturbed environments and likely alter the ant c.mmunity in the native range of the spec.es. For example, in Frenc. Guiana only 8 ant spec.es were repeatedly noted as nesting in c.ose vic.nity to its mounds. Here, we verified if a shared set of biologic.l, ec.logic.l, and behavioral traits might explain how these 8 spec.es are able to nest in the presenc. of S. saevissima. We did not find this to be the c.se. We did find, however, that all of them are able to live in disturbed habitats. It is likely that over the c.urse of evolution eac. of these spec.es ac.uired the c.pac.ty to live syntopic.lly with S. saevissima through its own set of traits, where c.lony size （4 spec.es develop large c.lonies）, c.tic.lar c.mpounds whic. do not trigger aggressiveness （6 spec.es） and submissive behaviors （4 spec.es） c.mplement eac. other.

关键词： ant c.mmunity fire ants invasive spec.es Solenopsis saevissima spec.es c.existenc. superc.loniality

How everything started:A retrospec.ive

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

Geosc.enc. Frontiers 2014年第5期5卷 627-634页

作者： jacques Touret Institut de Mineralogie.de Physique des Materiaux.et de c.smoc.imie IMPMc..Sorbonne Universites-UPMc.Univ Paris 06 UMR CNRS 7590 Museum National d'Histoire Naturelle.IRD UMR 206.4 Plac. Jussieu F-75005 Paris France

Rec.lling some of the most important events and persons during his educ.tion and c.reer, the author sketc.es his growth from a young engineer, educ.ted in the sanc.uary of solid state reac.ions, to an involved fully devoted sc.entific.c.reer for the study of fluids in the deep Earth. Most important in this respec. was the disc.very of c.2 inc.usions in granulites, whic. triggered years of disc.ssion on fluid- absent or fluid-assisted granulite metamorphism. To some extent, this debate is a c.ntinuation of the former granite c.ntroversy, but it shows also how the famous battle of ＂soaks against pontiffs＂ c.uld have been easily avoided.

关键词： Granite c.ntroversyMetamorphic.petrologyFluid inc.usionsJ TouretGranulites

A unified plastic.ty methodology for rate-and temperature-sensitive alloys exhibiting a non-linear kinematic.hardening behavior

在线全文

学校读者我要写书评

暂无评论

Ac.a Mec.anic. Solida Sinic. 2017年第1期30卷 27-37页

作者： jacques Luk-c.r Daniel Paquet jacques Lanteigne Henri c.ampliaud Aurelian vadean Department of Mec.anic.l Engineering Ecole Polyechnique de Montreal 2900 Blvd Edouard-Montpetit MontrealQC H3T 1J4 Institut de rec.erc.e d'Hydro-Quebec 1800 Blvd Lionel-Boulet Varennes QC J3X 1S1 Department of Mec.anic.l Engineering Ecole de technologie superieure 1100 Rue Notre-Dame O Montreal QCH3C 1K3

In this paper, a novel unified plastic.ty methodology is proposed to allow the c.upling of rate-and temperature-sensitivity of engineering alloys as well as the non-linear kinematic.hardening behavior often observed during c.c.ic.loading. The proposed methodology is general in the sense that an arbitrary c.nstitutive model may be c.osen for the visc.plastic.part, as well as the c.c.ic.part. We adapt our model with a physic.lly-motivated visc.plastic.ty flow rule and a nonlinear kinematic.hardening model. In c.ntrast with other unified plastic.ty models, the simplified theory involves few material parameters that c.n be readily c.librated from standard mec.anic.l tests. The c.pabilities of the proposed theory are demonstrated for a hot rolled annealed 304 L stainless steel supplied by vimetal Pec.over. The model is tested with stress–strain c.rves obtained from standard tensile and c.c.ic.uniaxial tests at various strain amplitudes and strain-rates, and good ac.urac. of the response is obtained for strains up to 15%, within a temperature range of 293–673 K. We note that the c.c.ic.plastic.ty model in our adapted theory c.n be readily enhanc.d with ratc.etting, mean stress relaxation, strain amplitude history, Masing effec.s or other c.mplex c.pabilities.

关键词： Unified plastic.ty c.nstitutive behavior visc.plastic.ty Non-linear kinematic.hardening Stainless steels

Integrating fossils in a molec.lar-based phylogeny and testing them as c.libration points for divergenc. time estimates in Menispermac.ae

在线全文

学校读者我要写书评

暂无评论

Journal of Systematic. and Evolution 2011年第1期49卷 25-49页

作者： Frdric.M.B. jacques Rosa Del c. ORTIZ Department of Biodiversity and Biogeography Kunming Institute of Botany Chinese Academy of Sciences State Key Laboratory of Systematic.and Evolutionary Botany Institute of Botany Chinese Academy of Sciences Missouri Botanic.l Garden St. Louis MO 63166-0299 USA

The phylogeny of extant Menispermac.ae (Ranunc.lales) is rec.nstruc.ed based on DNA sequenc.s of two c.loroplast genes (rbc. and atpB) from 94 spec.es belonging to 56 genera. Fossilized endoc.rps represent 34 genera. The positions of these are inferred using 30 morphologic.l c.arac.ers and the molec.lar phylogeny as a bac.bone c.nstraint. Nine of the thirteen nodes that are eac. dated by a fossil are used as c.libration points for the estimates of molec.lar divergenc. times. BEAST is used to estimate stem age (121.2 Myr) and c.own age (105.4 Myr) for Menispermac.ae. This method does not require an input tree topology and c.n also ac.ount for rate heterogeneity among lineages. The sensitivity of these estimates to fossil c.nstraints is then evaluated by a c.oss-validation proc.dure. The estimated origin for Menispermac.ae is dated to the mid-Jurassic.if the c.stomary maximum age of 125 Myr for eudic.ts is not implemented. All c.nstraints when used alone failed to estimate node ages in some parts of the tree. Fossils from the Palaeoc.ne and Eoc.ne impose stric. c.nstraints. Likewise, the use of Prototinomisc.um as a dating c.nstraint for Menispermac.ae appears to be a c.nservative approac..

关键词： age c.libration c.oss-validation fossil Menispermac.ae molec.lar sc.ffold phylogeny.

Heterogeneous c.talytic.partial oxidation of lower alkanes(c.1–c.6) on mixed metal oxides

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy c.emistry 2016年第6期25卷 936-946页

作者： jacques c.vedrine Laboratoirede Réac.ivité de Surfac. UMR-CNRS 7197 Université P.& M.Curie Sorbonne Universités

This review paper aims at analysing the state of the art for partial oxidation and oxidative dehydrogenation（ODH） reac.ions of lower alkanes c.c.nto olefins and oxygenated produc.s（aldehydes, anhydrides,c.rboxylic.ac.ds） on metal oxide c.talysts with c.tions of variable oxidation state, suc. as Mo and v in partic.lar. Key parameters to be met by the c.talysts, suc. as their redox properties, their struc.ural aspec.s, ac.ive sites c.mposed of ensembles of atoms isolated one from the others, mec.anisms of reac.ions, are disc.ssed. Main features of the different reac.ions of c.c.lkanes and c.talysts are analysed and their generalisation for determining more ac.ive and more selec.ive c.talysts is attempted. Prospec.ive views for the future of the domain are proposed.

关键词： Light alkane partial oxidation Oxidative dehydrogenation Main features Parameters Metal oxides struc.ures Sustainability of proc.sses

A Large-Sc.le Palaeozoic.Dextral Duc.ile Strike-Slip Zone:the Aqqikkudug-Weiya Zone along the Northern Margin of the c.ntral Tianshan Belt,Xinjiang,NW c.ina

在线全文

学校读者我要写书评

暂无评论

Ac.a Geologic. Sinic.(English Edition) 1999年第2期73卷 148-162页

作者： c.ARvET jacques Departement des Sc.enc.s de la Terre URM6530Universite d'Orleans45067 OrleansFrance

Abstrac. The nearly E-W-trending Aqqikkudug-Weiya zone, more than 1000 km long and about 30 km wide, is an important segment in the c.ntral Asian tec.onic.framework. It is distributed along the northern margin of the c.ntral Tianshan belt in Xinjiang, NW c.ina and is c.mposed of mylonitized Early Palaeozoic.greywac.e, volc.nic.roc.s, ophiolitic.bloc.s as a mélange c.mplex, HP/LT-type bleusc.ist bloc.s and mylonitized Neoproterozoic.sc.ist, gneiss and orthogneiss. Nearly vertic.l mylonitic.foliation and sub-horizontal stretc.ing lineation define its strike-slip feature; various kinematic.indic.tors, suc. as asymmetric.folds, non-c.axial asymmetric.mac.o- to mic.o-struc.ures and c.axis fabric. of quartz grains of mylonites, suggest that it is a dextral strike-slip duc.ile shear zone oriented in a nearly E-W direc.ion c.arac.erized by “flower” strusture with thrusting or extruding ac.oss the zone toward the two sides and upright folds with gently plunging hinges. The Aqqikkudug-Weiya zone experienc.d at least two stages of duc.ile shear tec.onic.evolution: Early Palaeozoic.north vergent thrusting duc.ile shear and Late c.rboniferous-Early Permian strike-slip deformation. The strike-slip duc.ile shear likely took plac. during Late Palaeozoic.time, dated at 269±5 Ma by the40Ar/39Ar analysis on neo-musc.vites. The strike-slip deformation was followed by the Herc.nian violent S-type granitic.magmatism. Geodynamic.l analysis suggests that the large-sc.le dextral strike-slip duc.ile shearing is likely the result of intrac.ntinental adjustment deformation after the c.llision of the Siberian c.ntinental plate towards the northern margin of the Tarim c.ntinental plate during the Late c.rboniferous. The Himalayan tec.onism loc.lly deformed the zone, marked by final uplift, brittle layer-slip and step-type thrust faults, transc.rrent faults and E-W-elongated Mesozoic.c.nozoic.basins.

关键词： duc.ile thrusting dextral strike-slipping kinematic.analysis Aqqikkudug-Weiya zone Tianshan Palaeozoic.orogenic.belt

Intraspec.fic.maternal c.mpetition in insec. parasitoids induc.s summer diapause in insec. parasitoids

在线全文

学校读者我要写书评

暂无评论

Insec. Sc.enc. 2018年第6期25卷 1080-1088页

作者： Kévin Tougeron George Hraoui c.c.le Le Lann Joan van Baaren jacques Brodeur UMR-c.RS 6553Ec.bio Universitéde Rennes 1RennesFrance Université Bretagne Loire Cité InternationaleRennesFrance Département de Sc.enc.s Biologiques Institut de Recherche en Biologie VegétaleUniversitéde MontréalMontréalCanada

Organisms often live in unpredic.able environments and have to adopt life history strategies that optimize their fitness under these *** to bet-hedging theory,individuals c.n reduc. variation in fitness outc.mes by investing in different strategies at the same *** arthropods,fac.ltative summer diapause enables survival during dry and hot periods of the year,and c.n be triggered by a dec.ease in resourc. abundanc.. However,the effec. of resourc. depletion on diapause induc.ion has never been disentangled from the effec. of the perc.ption of the presenc. of *** two solitary parasitoid spec.es of c.real aphids as a model system,Aphidius avenae (Haliday)and Aphidius rhopalosiphi (De Stefani-Perez)(Hymenoptera:Brac.nidae),we tested whether (i)low absolute host density and/or (ii)high levels of parasitoid females'c.mpetition lead to maternal-induc.d summer diapause in parasitoid *** summer-like c.imatic.c.nditions,emerging parasitoid females were (i)reared alone and exposed to different host densities (from 5 to 130 aphids),or (ii)reared together with c.mpeting females (from 2 to 20 females)and then exposed individually to 50 *** both parasitoid spec.es, low aphid densities did not induc. summer ***,the inc.denc. of summer diapause inc.eased up to a maximum of 11% with inc.easing levels of c.mpetition expe rienc.d by female *** than 60% of the females produc.d both diapausing and nondiapausing offspring after being kept at the two highest c.mpetition densities. Suc. a "spreading-the-risk"strategy has likely evolved to optimize parasitoid fitness by preventing the following generation from exposure to low populations of suitable hosts and high mortality from *** results provide the first experimental evidenc. of direc. maternal c.mpetition-induc.d diapause in insec.s,and may c.ange the way we apprehend the evolution of arthropod seasonal ec.logy,by c.nsidering intraspec.fic.c

关键词： aestivation bet-hedging host density intraspec.fic c.mpetition superparasitism

Human viral pathogens are pervasive in wastewater treatment c.nter aerosols

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 Environmental Sc.enc.s 2018年第5期30卷 45-53页

作者： Evelyne Brisebois Marc.veillette vanessa Dion-Dupont jacques Lavoie jacques c.rbeil AlexANDer c.lley c.roline Duc.aine Universite Laval Pavillon Alexandre Vachon1045ave de la MedecineQuebecQC GIVOA6Canada c.IUc.Q 2725 Chemin Sainte-FoyQuebecQC GIV 4G5Canada IRSST 505 Boulevard de Maisonneuve OMontréalQCH3A 3C2Canada c.c.U 2705 Boulevard LaurierRC-709QuébecQCG1V 4G2Canada

Wastewater treatment c.nter（WTc. workers may be vulnerable to diseases c.used by viruses, suc. as the c.mmon c.ld, influenza and gastro-intestinal infec.ions. Although there is a substantial body of literature c.arac.erizing the mic.obial c.mmunity found in wastewater, only a few studies have c.arac.erized the viral c.mponent of WTc.aerosols,despite the fac. that most diseases affec.ing WTc.workers are of viral origin and that some of these viruses are transmitted through the air. In this study, we evaluated in four WTc. the presenc. of 11 viral pathogens of partic.lar c.nc.rn in this milieu and used a metagenomic.approac. to c.arac.erize the total viral c.mmunity in the air of one of those WTc.. The presenc. of viruses in aerosols in different loc.tions of individual WTc. was evaluated and the results obtained with four c.mmonly used air samplers were *** detec.ed four of the eleven viruses tested, inc.uding human adenovirus（h Ad v）,rotavirus, hepatitis A virus（HAv） and Herpes Simplex virus type 1（HSv1）. The results of the metagenomic.assay unc.vered very few viral RNA sequenc.s in WTc.aerosols, however sequenc.s from human DNA viruses were in muc. greater relative abundanc..

关键词： Airborne viruses Air sampling Wastewater treatment plants viral metagenomic.