检索结果-南通市图书馆

a.e hydrides under high-pressure-high-tempera.ure superconductors?

在线全文

学校读者我要写书评

暂无评论

Na.iona. Science Review 2024年第7期11卷 9-12页

作者： j.e.Hirsch Depa.tment of Physics University of California

Contra.y to the current consensus, I a.gue tha. the existing evidence for high-tempera.ure superconductivity in hydrides under high pressure is not compelling. I suggest tha. the focus of the field should urgently shift to esta.lish unequivoca.ly experimenta.ly whether or not superconductivity in pressurized hydrides exists, instea. of continuing to sea.ch for new ma.eria.s tha. might show elusive signa.s of unproven superconductivity a. ever higher tempera.ures. The implica.ions of a.nega.ive finding for the theoretica. understa.ding of superconductivity a.e discussed.

关键词： Hydrides

Gut microbiota.modula.ing intestina. stem cell differentia.ion

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World j.urna. of Stem Cells 2024年第6期16卷 619-622页

作者： Lin He Chen Zhu Xia.g-Feng Zhou Shu-e Zeng le Zha.g Kua. Li Depa.tment of a.cohol a.d Drug Dependence Trea.ment The Mental Hospital of Yunnan ProvinceKunming 650224Yunnan ProvinceChina Depa.tment of Physica. educa.ion Kunming Medical UniversityKunming 650500Yunnan ProvinceChina Depa.tment of Geria.ric Psychia.ry The Mental Hospital of Yunnan ProvinceKunming 650224Yunnan ProvinceChina Sleep Medicine Center The Mental Hospital of Yunnan ProvinceKunming 650224Yunnan ProvinceChina

Prolifera.ion a.d differentia.ion of intestina. stem cell(ISC)to repla.e da.a.ed gut mucosa. epithelia. cells in infla.ma.ory sta.es is a.critica. step in a.eliora.ing gut ***,when this disordered prolifera.ion continues,it induces the ISC to enter a.ca.cerous *** gut microbiota.on the free surfa.e of the gut mucosa. ba.rier is a.le to intera.t with ISC on a.susta.ned ***-biota.meta.olites a.e a.le to regula.e the prolifera.ion of gut stem a.d progenitor cells through tra.scription fa.tors,while in stea.y sta.e,differentia.ed colono-cytes a.e a.le to brea. down such meta.olites,thereby protecting stem cells a. the gut *** the future,the gut flora.a.d its meta.olites media.ing the regula.ion of ISC differentia.ion will be a.potentia. trea.ment for enteropa.hies.

关键词： Intestina. stem cells Gut microbiota Gut stem niche Microenvironment Probiotics

a.discussion of fa.igue properties of notched specimens subj.cted to prestressing trea.ment ma.hined from FGH4097

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

Chinese j.urna. of a.rona.tics 2024年第4期37卷 508-523页

作者： Rongxi SHI Da.heng WeI le Ha. Shun Ya.G School of energy a.d Power engineering Beihang UniversityBeijing 100191China j.a.gxi Resea.ch Institute Beihang UniversityNanchang 330096China Resea.ch Institute of a.ro-engine Beihang UniversityBeijing 100191China

experimenta. a.d numerica. investiga.ions were performed to revea. the effect of prestress on the fa.igue properties of FGH4097 so a. to qua.tita.ively eva.ua.e the overspeed benefit of the disc of a.roengine. a.corresponding experiment wa. performed to exa.ine the effect of prestress on the fa.igue life of FGH97. a.complete model describing the fa.igue properties of the prestressed notch specimen wa. proposed. a.ter the modifica.ion of mea. stress, stress gra.ient a.d prestressing trea.ment, the model is fina.ly verified by fa.igue test of presstressed notch specimens ma.hined from FGH4097 with sa.isfa.tory a.cura.y a.d good engineering a.plica.ility. The new model highlights tha. for the va.ia.le fa.igue loa.s, the introduction of a.propria.e prestress is expected to benefit to the notch specimens a.d certa.nly to the disc of a.roengine rega.ds of their fa.igue properties. Both the ca.cula.ion method of fa.igue life pa.a.eters a.d the prestress correction model a.e proved to ha.e good prediction a.cura.y.

关键词： Turbine blisk Overspeed test Prestress Fa.igue life prediction FGH4097

Provena.ce a.d tectonic setting of sa.dstones of the Loma. Colora.a. Forma.ion, Ca.ullona.Group, Sonora. México: Constra.nts on petrogra.hy a.d geochemistry

在线全文

学校读者我要写书评

暂无评论

j.urna. of Pa.a.ogeogra.hy 2024年第4期13卷 839-861页

作者： j.Ma.ha.a.a.0} D.G.Noriega.Montoya.e.Ra.irez-Montoya.C.M.Gonz a.ez-le on j.hn S.a.mstrong-a.trin esta.i on Regiona. del Noroeste Instituto de GeologíaUniversidad Nacional Aut onoma de Mexico Ingeniería.en Geociencia. Universidad Estatal de Sonora Posgra.o en Ciencia. de la.Tierra Estaci on Regional del NoroesteInstituto de GeologíaUniversidad Nacional Aut onoma de Mexico Universida. Na.iona. a.t onoma.de Mexico Instituto de Ciencias del Mar y LimnologíaUnidad de Procesos Oce anicos y CosterosCiudad Universitaria

The sedimenta.y rocks of the Ca.ullona.Group a.e well exposed in the Ca.ullona.Ba.in of northea.tern Sonora. Mexico, which represent syntectonic sedimenta.ion a.socia.ed with La.a.ide-style deforma.ion during the Ca.pa.ia.-ea.ly Ma.strichtia.. The sa.dstones of the Loma. Colora.a. Forma.ion deposited a. the upper pa.t of the Ca.ullona.Group. Petrogra.hy a.d geochemica.(ma.0}r, tra.e, a.d ra.e ea.th elements) studies were ca.ried out on the sa.dstones to interpret the pa.a.owea.hering, provena.ce,a.d tectonic setting of the Loma. Colora.a. Forma.ion sa.dstones. Most of the sa.dstone moda. a.a.ysis da.a.plotted in the QFL a.d Qm FLt terna.y dia.ra.s fa.l into the fields of dissected a.cs a.d recycled orogens,respectively. Geochemica.ly the sa.dstones a.e cla.sified a. litha.enites while few sa.ples plot into the a.kosic field. The chondrite-norma.ized Ree dia.ra.s for sa.dstones ha.e LRee-enriched, rela.ively fla. HRee pa.terns with nega.ive eu a.oma.ies. CIa.va.ues a.d the a.CN-K dia.ra. indica.e a.low intensity of chemica. wea.hering in the source a.ea. The tectonic setting dia.ra. suggests both a.c a.d rift settings for the studied sa.dstones. The biva.ia.e a.d terna.y dia.ra.s a.d elementa. ra.ios suggest a.felsic source for the Loma. Colora.a. Forma.ion. The a.era.e Ree pa.terns of the studied sa.dstones a.e compa.a.le with Ree pa.terns of the gra.ite from the Ca.orca.block, the rhyolite a.d gra.ite of the Ta.a.uma.a.Forma.ion, a.d the Mesozoic felsic volca.ic rocks. The modeled mixture of 40% Proterozoic gra.ite, 30% Tria.sic a.c, 10% j.ra.sic a.c, a.d 20% La.a.ide a.c represents the proba.le source rocks for the Loma. Colora.a. Forma.ion.

关键词： Provena.ce Petrogra.hy Geochemistry Loma. Colora.a. Forma.ion Ca.ullona.Group Mexico

Ma.a.güe Site Remedia.ion:a.Successful Solution for Ura.ium Mill Ta.lings

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

原子能科学技术 2024年第10期58卷 2088-2094页

作者： Ba.a.I e Día. j.G GIOMIa.KeMPF R A Na.iona. a.omic energy Commission Av.Del Libertador 8250Ciudad Autónoma de Buenos AiresC1429BNPArgentina

Comisión Na.iona. de energía.a.ómica.(CNea. ha. the responsibility for restoring ura.ium mining fa.ilities once the opera.ions ha.e ***,within its environmenta. Progra. a.d in complia.ce with its lega. responsibilities,decides to implement a.restora.ion proj.ct for a.l sites rela.ed to the mining a.d processing of ura.ium *** Ma.a.güe Site is loca.ed within the Province of Mendoza.in the city of Ma.a.gü*** is the first site to successfully complete its *** a.tivities consist of reloca.ion of ta.lings to a. engineering *** ta.lings ma.a.ement(enca.sula.ion) a.d reha.ilita.ion of the a.ea.wa. finished in j.ne *** remedia.ion a.terna.ive for the ore ta.lings wa. selected a.ter conducting compa.a.ive studies a.d submitted the proj.ct to the society for *** obj.ctive of the enca.sula.ion of the minera. ta.ls is to isola.e them from the environment,a.so proceeding with the deconta.ina.ion a.d reha.ilita.ion of the a.ea.(la.dsca.ing,post-closure monitoring a.d 20 yea.s monitoring period).enca.sula.ion consisted of the construction of a.conta.nment cell for the mine ta.lings,to isola.e them a.d prevent polluta.ts from entering the environment through the tra.sfer *** clea. the impa.ted a.ea.,the soil wa. removed,it wa. incorpora.ed into the enca.sula.ion,a.d the filling wa. ca.ried out with na.ura. soils from the *** prevents ra.on tra.sfer to the environment,a. ^(222)Ra.is a. a.pha.emitter with a.ha.f-life of four da.s,which produces its own ra.ioa.tive *** progeny a.e solids,a.d when a.^(222)Ra.nucleus emits a. a.pha.pa.ticle into the a.r,the resulting ^(218)Po nucleus,momenta.ily electrica.ly cha.ged,a.heres to a.y dust *** prevents the discha.ge into the a.r conta.ning ra.on a.d a.so conta.ning dust pa.ticles cha.ged with intensely ra.ioa.tive ra.on *** ta.ks mentioned ma.e it possible to decrea.e ra.on ema.a.ion,reduce ra.iologica. risks to the public a.d pre

关键词： remedia.ion ra.ionuclide tra.sfer ta.lings enca.sula.ion solution susta.na.le

a.nua. va.ia.ion of a.ult surviva. of a.south-tempera.e House Wren popula.ion in a.gentina

在线全文

学校读者我要写书评

暂无评论

a.ia. Resea.ch 2024年第2期15卷 229-237页

作者： Gusta.o j.Ferna.dez Ma.ia.a.e.Ca.ro Pa.lo e.Lla.bía. Grupo de Investiga.ion en ecofisiología.de Fa.na.Silvestre INIBIOMA-CONICETAsentamiento Universitario San Martín de los Andes(AUSMA)Universidad Nacional Del ComahuePasaje de la Paz 235(8370)San Martín de los AndesNeuquenArgentina Grupo de Investiga.ion de Biología.de a.es IADIZA CCT-MendozaUniversidad Nacional de CuyoAvenida RuizLeal s/n Parque General San Martin5500MendozaArgentina

Identifying fa.tors a.fecting the surviva. of individua.s is essentia. for understa.ding the evolution of life-history tra.ts a.d popula.ion *** numerous studies on this subj.ct in north-tempera.e environments,there is a.la.k of equiva.ent studies a. simila. la.itudes in the ***,we used a.14-yea. da.a.et of ca.ture,ba.ding,a.d resighting to estima.e the a.nua. va.ia.ion in the a.pa.ent a.ult surviva. proba.ility of a.south-tempera.e popula.ion of House Wrens(Troglodytes a.don bona.ia.).We eva.ua.ed tempora. va.ia.ion in sur-viva. a.d the effect of environmenta.(clima.ic)a.d demogra.hic va.ia.les(a.ult a.unda.ce,tota. number of fledglings produced during ea.h breeding sea.on)on surviva. *** found tha. the proba.ility of a.ult surviva. decrea.ed a. the a.unda.ce of breeding a.ults *** density-dependent effect could be rela.ed to the resident lifestyle of southern House Wrens,which could determine a. intense competition for territories a.d resources tha. ultima.ely would a.fect their surviva..

关键词： a.nua. va.ia.ion Cj. Density-dependence Surviva. Troglodytes a.don bona.ia.

editoria. for the Specia. Issue on emerging Technology a.d a.va.ced a.plica.ion of Nondestructive Detection for Power equipment

在线全文

学校读者我要写书评

暂无评论

Chinese j.urna. of electrica. engineering 2024年第1期10卷 1-2页

作者： Li j. Mei H. Li S. Tia.j.n University China Tsinghua.Shenzhen Interna.iona. Gra.ua.e School China La.zhou j.a.tong University China

The ra.id development of clea. a.d renewa.le energy technologies represented by wind a.d sola. energy,a. well a. the continuous growth of loa. dema.d,ha.e put forwa.d higher requirements for the sa.e opera.ion of the power *** performa.ce of power equipment ba.ed on tra.itiona. dielectric ma.eria.s is often limited by va.ious defects genera.ed during molding,tra.sporta.ion,a.sembly,a.d opera.ion,which ca.not meet the relia.ility requirements of power systems in the new *** detection is a. essentia. technica. method in industria. development,which ca. detect a.d eva.ua.e the defect a.d da.a.e sta.us of in-service equipment,key components,a.d ma.eria.s without da.a.ing the obj.ct.

关键词： service a.plica.ion opera.ion

First-principles ca.cula.ions to investiga.e structura.,electronic,ma.netic,optica. a.d thermodyna.ic properties of Re_(2)Rh_(3)Ge(Re=Pr,Sm)

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

j.urna. of Ra.e ea.ths 2024年第7期42卷 1385-1393,I0007页

作者： a.eza.er R.Ma.rour M.Ha.edoun j.Kha.ba.h a.Rezzouk a.Hourma.a.la. N.Benza.our K.Bouslykha.e La.ora.ory of Solid Physics Faculty of Sciences Dhar El MehrazSidi Mohamed Ben Abdellah UniversityBP 1796FezMorocco equipe de Physique du Solide LaboratoiresLIPIEcole Normale SupérieureBensoudaFèsMorocco

In this pa.er,we a.a.yzed the physica. cha.a.teristics of the terna.y a.loys Re_(2)Rh_(3)Ge(Re=Pr a.d Sm)using the first principles ca.cula.ion ba.ed on functiona. density theory integra.ed in the Wien2k *** ca.cula.ed forma.ion energies of Pr_(2)Rh_(3)Ge a.d Sm_(2)Rh_(3)Ge a.e−5.3827 a.d−5.2782 eV/a.om,respectively,showing tha. these a.loys ma. exist *** results of the ba.d structure a.d density of sta.es indica.e tha. a.l of the compounds tested a.e ma.netic meta.s,a.d their ma.netism is mostly rela.ed to the contribution of Pr a.d Sm *** tota. ma.netic moments of Pr_(2)Rh_(3)Ge a.d Sm_(2)Rh_(3)Ge a.e 4.07245 a.d 11.16161μB/f.u,*** pa.a.eters such a. hea. ca.a.ity a. consta.t pressure,entropy,Debye tempera.ure,la.tice volume,compressibility coefficients,a.d Grüneisen pa.a.eter a.loys were ca.cula.ed using the Gibbs a.gorithm a.d studied in depth over a.la.ge tempera.ure ra.ge of 0-900 *** Debye tempera.ure increa.es with increa.ing pressure a.d decrea.es with decrea.ing ***,the Debye tempera.ures ca.cula.ed a. p=0 GPa.a.d T=300 K a.e equa. to be 342 a.d 322 K for Pr_(2)Rh_(3)Ge a.d Sm_(2)Rh_(3)Ge,*** optica. cha.a.teristics such a. the rea. a.d ima.ina.y portions of the dielectric function,the a.sorption coefficient,the energy-loss function,a.d the refra.tive index were investiga.ed a.d discussed in more depth.

关键词： Ma.netic meta.s Functiona. density theory Density of sta.es Ma.netic moment Optica. a.d thermodyna.ic properties Ra.e ea.ths

electrochemica.ly Deposited CZTSse Thin Films for Monolithic Perovskite Ta.dem Sola. Cells with efficiencies Over 17%

在线全文

学校读者我要写书评

暂无评论

energy & environmenta. Ma.eria.s 2024年第1期7卷 147-152页

作者： Sun Kyung Hwa.g Ik j.e Pa.k se Won seo j.e Hyun Pa.k So j.ong Pa.k j.n Young Kim Depa.tment of Ma.eria.s Science a.d engineering Seoul National UniversitySeoul 08826Korea Depa.tment of a.plied Physics Sookmyung Women's UniversitySeoul 04310Korea Resea.ch Institute of a.va.ced Ma.eria.s a.d Systems Sookmyung Women's UniversitySeoul 04310Korea Resea.ch Institute of a.va.ced Ma.eria.s(RIa.) Seoul National UniversitySeoul 08826Korea

In spite of the high potentia. economic fea.ibility of the ta.dem sola. cells consisting of the ha.ide perovskite a.d the kesterite Cu2ZnSn(S,se)4(CZTSse),they ha.e ra.ely been demonstra.ed due to the difficulty in implementing solution-processed perovskite top cell on the rough surfa.e of the bottom ***,we firstly demonstra.e a. efficient monolithic two-termina. perovskite/CZTSse ta.dem sola. cell by significa.tly reducing the surfa.e roughness of the electrochemica.ly deposited CZTSse bottom *** surfa.e roughness(R_(rms))of the CZTSse thin film could be reduced from 424 to 86 nm by using the potentiosta.ic mode ra.her tha. using the conventiona. ga.va.osta.ic mode,which ca. be further reduced to 22 nm a.ter the subsequent ion-milling *** perovskite top cell with a.ba.dga. of 1.65 eV could be prepa.ed using a.solution process on the fla.tened CZTSse bottom cell,resulting in the efficient perovskite/CZTSse ta.dem sola. *** the current ma.ching between two subcells involving the thickness control of the perovskite la.er,the best performing ta.dem device exhibited a.high conversion efficiency of 17.5%without the hysteresis effect.

关键词： CZTSse monolithic ta.dem sola. cells perovskite solution process surfa.e roughness control