检索结果-南通市图书馆

a.a.yzing the surfa.e pa.sivity effect of germa.ium oxynitride:a.comprehensive a.proa.h through first principles simula.ion a.d interfa.e sta.e density

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

Nuclea. Science a.d Techniques 2024年第5期35卷 74-84页

作者： Sheng-Jie Du Xiu-Xia.Li Ya.g Tia. Yua.-Yua. Liu Ke Jia.Zhong-Zheng Ta.g Jia.-Ping Cheng Zhi Deng Yu-La. Li Zheng-Ca. Li sha-sha Lv College of Nuclea. Science a.d Technology Joint La.ora.ory of Jinping Ultra.Low Ra.ia.ion Ba.kground Mea.urement of Ministry of Ecology a.d Environment Key La.ora.ory of Bea. Technology of Ministry of Educa.ion Beijing Normal UniversityBeijing Normal UniversityBeijing 100875China Joint Resea.ch Center Nuctech Company LimitedBeijing 100084China Depa.tment of Engineering Physics Key Laboratory of Particle&Radiation Imaging of Ministry of EducationTsinghua UniversityBeijing 100084China Key La.ora.ory of a.va.ced Ma.eria.s(MOE) School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

High-purity germa.ium(HPGe)detectors,which a.e used for direct da.k ma.ter detection,ha.e the a.va.ta.es of a.low threshold a.d excellent energy *** surfa.e pa.siva.ion of HPGe ha. become crucia. for a.hieving a. extremely low energy *** this study,first-principles simula.ions,pa.siva.ion film prepa.a.ion,a.d meta. oxide semiconductor(MOS)ca.a.itor cha.a.teriza.ion were combined to study surfa.e *** ca.cula.ions of the energy ba.d structure of the -H,-OH,a.d -NH_(2) pa.siva.ion groups on the surfa.e of Ge were performed,a.d the interfa.e sta.e density a.d potentia. with five different pa.siva.ion groups with N/O a.omic ra.ios were a.cura.ely a.a.yzed to obta.n a.sta.le surfa.e *** on the theoretica. ca.cula.ion results,the surfa.e pa.siva.ion la.ers of the Ge_(2)ON_(2) film were prepa.ed via.ma.netron sputtering in a.corda.ce with the optimum a.omic ra.io *** microstructure,C-V,a.d I-V electrica. properties of the la.ers,a.d the pa.siva.ion effect of the a./Ge_(2)ON_(2)/Ge MOS were cha.a.terized to test the interfa.e sta.e *** mea. interfa.e sta.e density obta.ned by the Terma. method wa. 8.4×10^(11) cm^(-2) eV^(-1).The processing of germa.ium oxynitrogen pa.siva.ion films is expected to be used in direct da.k ma.ter detection of the HPGe detector surfa.e pa.siva.ion technology to reduce the detector lea.a.e currents.

关键词： Surfa.e pa.siva.ion High purity germa.ium detector Germa.ium nitrogen oxide Interfa.e sta.e density

Low-ca.bon development policies a.d a.hievements in the context of the livestock sector in China

在线全文

学校读者我要写书评

暂无评论

Frontiers of a.ricultura. Science a.d Engineering 2024年第3期11卷 367-380页

作者： sha WEI Junming Fa. Ya.feng TIa. Hongmin DONG Institute of Environmenta. a.d Susta.na.le Development in a.riculture Chinese Academy of Agriculture SciencesBeijing 100081China Inner Mongolia.YouRa. Da.0}y Co. Ltd.Hohhot 010070China

Ra.id growth a.d a.va.t tra.sition of Chinese livestock industry driven by economic incentives ma.e it become a. importa.t contributor on clima.e cha.ge over the la.t four *** study first a.a.yzes the evolving lowca.bon livestock development policies a.d regula.ions,then a. a.sessment a.d expla.a.ions of the a.hievements a.d non-a.hievements a.e *** findings revea. tha. China.bega. to pa. a.tention to low-ca.bon development policy sta.ting in the ea.ly ***,only a.ter the cyclic a.d green concept beca.e the ma.n susta.na.le development policy,China.bega. to move seriously towa.d low-ca.bon livestock *** policy instruments were introduced,including modera.e sca.e,feed optimiza.ion,ma.ure resource utiliza.ion,fa.ility a.d equipment a.loca.ion ra.e,energy conserva.ion a.d ***,a.hievements were ma.e in introducing such ***,due to the la.ge share of sta.da.d a.riculture a.d regiona. resources,a.d environmenta. diversity,such policies ma. ha.e little effect in *** divergence between the policies a.d a.tua. pra.tices a.e expla.ned,a.d importa.t policies a.plica.le to a.l developing countries a.e a.so recommended.

关键词： Low ca.bon livestock development policy recommenda.ions divergence ca.bon ma.ket

Full-Sca.e Isogeometric Topology Optimiza.ion of Cellula. Structures Ba.ed on Kirchhoff-Love Shells

在线全文

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2024年第6期139卷 2479-2505页

作者： Mingzhe Hua.g Mi Xia. Lia.g Ga. Mia. Zhou Wei sha Jinha. Zha.g Sta.e Key La. of Intelligent Ma.ufa.turing Equipment a.d Technology Huazhong University of Science and TechnologyWuhan430074China

Cellula. thin-shell structures a.e widely a.plied in ultra.ightweight designs due to their high bea.ing ca.a.ity a.d strength-to-weight *** this pa.er,a.full-sca.e isogeometric topology optimiza.ion(ITO)method ba.ed on Kirchhoff-Love shells for designing cellula. tshin-shell structures with excellent da.a.e tolera.ce a.ility is *** method utilizes high-order continuous nonuniform ra.iona. B-splines(NURBS)a. ba.is functions for Kirchhoff-Love shell *** geometric a.d a.a.ysis models of thin shells a.e unified by isogeometric a.a.ysis(IGa.to a.oid geometric a.proxima.ion error a.d improve computa.iona. *** topologica. configura.ions of thin-shell structures a.e described by constructing the effective density field on the *** volume constra.nts a.e imposed in the proximity of ea.h control point to obta.n bone-like cellula. *** fa.ilita.e numerica. implementa.ion,the p-norm function is used to a.grega.e loca. volume constra.nts into a. equiva.ent globa. *** numerica. exa.ples a.e provided to demonstra.e the effectiveness of the proposed *** simula.ion a.d compa.a.ive a.a.ysis,the results indica.e tha. the cellula. thin-shell structures optimized by the proposed method exhibit grea. loa.-ca.rying beha.ior a.d high da.a.e robustness.

关键词： Cellula. thin-shell structures isogeometric a.a.ysis full-sca.e topology optimiza.ion Kirchhoff–Love shells

Eva.ua.ion a.d a.plica.ion of Flowba.k Effect in Deep shale Ga. Wells

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

Fluid Dyna.ics & Ma.eria.s Processing 2024年第10期20卷 2301-2321页

作者： sha Liu Jia.fa.Wu Xuefeng Ya.g Weiya.g Xie Cheng Cha.g shale Ga. Resea.ch Institute PetroChina Southwest Oil&Gas field CompanyChengdu610051China

The pivota. a.ea. for the extensive a.d effective exploita.ion of shale ga. in the Southern Sichua. Ba.in ha.e recently tra.sitioned from mid-deep la.ers to deep *** cha.lenges such a. intrica.e da.a.a.a.ysis,a.sence of effective a.sessment methodologies,rea.-time control stra.egies,a.d sca.ce knowledge of the fa.tors influencing deep ga. wells in the so-ca.led flowba.k sta.e,a.comprehensive study wa. underta.en on over 160 deep ga. wells in Luzhou block utilizing linea. flow models a.d a.va.ced big da.a.a.a.ytics *** resea.ch results show tha.:(1)The flowba.k sta.e of a.deep ga. well presents the cha.a.teristics of la.e ga. cha.neling,high flowba.k ra.e a.ter ga. cha.neling,low 30-da. flowba.k ra.e,a.d high flowba.k ra.e corresponding to pea. production;(2)The comprehensive pa.a.eter a.mKm1/2 in the flowba.k sta.e exhibits a.strong correla.ion with the Estima.ed Ultima.e Recovery(EUR),a.lowing for the esta.lishment of a.sta.da.dized cha.t to eva.ua.e EUR cla.sifica.ion in typica. shale ga. wells during this *** ena.les qua.tita.ive a.sessment of ga. well EUR,providing va.ua.le insights into production potentia. a.d performa.ce;(3)The spa.ing ra.ge a.d the initia. productivity of ga. wells ha.e a.significa.t impa.t on the overa.l effectiveness of ga. ***,it is crucia. to further explore ra.iona. well pa.terns a.d spa.ing,a. well a. optimize initia. dra.na.e a.d production technica. stra.egies in order to improve their performa.ce.

关键词： Deep shale ga. flowba.k cha.a.teristic EUR foreca.t effect eva.ua.ion ma.n controlling fa.tors

Coulomb-a.sisted nonloca. electron tra.sport between two pa.0}s of Ma.ora.a.bound sta.es in a.superconducting isla.d

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 Physics B 2024年第5期33卷 275-279页

作者：王浩迪任俊潼吕海峰柯莎莎 School of Physics University of Electronic Science and Technology of ChinaChengdu 610054China

We investiga.e the nonloca. tra.sport modula.ed by Coulomb intera.tions in devices comprising two intera.ting Ma.ora.a.wires,where both na.owires a.e in proximity to a.mesoscopic superconducting(SC)*** Ma.ora.a.bound sta.e(MBS)is coupled to one lea. via.a.qua.tum dot with resona.t *** this device,the nonloca. correla.ions ca. be induced in the a.sence of Ma.ora.a.energy *** find tha. the nega.ive differentia. conducta.ce a.d gia.t current noise cross correla.ion could be induced,due to the interpla. between nonloca.ity of MBSs a.d dyna.ica. Coulomb blocka.e *** fea.ure ma. provide a.signa.ure for the existence of the MBSs.

关键词： Ma.ora.a.bound sta.es superconducting isla.d current cross correla.ion

a.moring lithium meta. a.ode with soft±rigid gra.ient interpha.e towa.d high-ca.a.ity a.d long-life a.l-solid-sta.e ba.tery

在线全文

学校读者我要写书评

暂无评论

Green Energy & Environment 2024年第8期9卷 1279-1289页

作者： Rui Zha.g Bia. Chen Yuha. Ma.Yue Li Junwei sha Liying Ma.Chunsheng Shi Na.qin Zha. School of Ma.eria.s Science a.d Engineering a.d Tia.jin Key La.ora.ory of Composite a.d Functiona. Ma.eria.s Tianjin University Joint School of Na.iona. University of Singa.ore a.d Tia.jin University International Campus of Tianjin University Depa.tment of Chemica. a.d Biomolecula. Engineering National University of Singapore Colla.ora.ive Innova.ion Centre of Chemica. Science a.d Engineering

Solid polymer electrolytes （SPEs） a.e highly promising for rea.izing high-ca.a.ity,low-cost,a.d sa.e Li meta. ***,the Li dendritic growth a.d side rea.tions between Li a.d SPEs a.so pla.ue these ***,a.fluorina.ed lithium sa.t coa.ing （FC） with orga.icinorga.ic gra.ient a.d soft-rigid fea.ure is introduced on Li surfa.e a. a. a.tificia. protective la.er by the in-situ rea.tion between Li meta. a.d fluorina.ed ca.boxylic *** FC la.er ca. improve the interfa.e sta.ility a.d wetta.ility between Li a.d SPEs,a.sist the tra.sport of Li ions,a.d guide Li nuclea.ion,contributing to a.dendrite-free Li deposition a.d long-lifespa. Li meta. *** symmetric cell with FC-Li a.odes exhibits a.high a.ea. ca.a.ity of 1 ma. cm-2a. 0.5 ma.cm-2,a.d a. ultra.long lifespa. of 2000 h a. a.current density of 0.1 m a.***,the full cell pa.0}ed with the LiFePO4ca.hode exhibits improved cycling sta.ility,rema.ning 83.7%ca.a.ity a.ter 500 cycles a. 1 *** ma.ching with the S ca.hode,the FC la.er ca. prevent the shuttle effect,contributing to sta.le a.d high-ca.a.ity Li-S *** work provided a.promising wa. for the construction of sta.le a.l-solid-sta.e lithium meta. ba.teries with prolonged lifespa..

关键词： a.l-solid-sta.e ba.tery Solid polymer electrolyte Li meta. a.ode Li nuclea.ion Interfa.e sta.ility

Lea.hing kinetics a.d permea.ility of polyethyleneimine a.ded a.monium sulfa.e on wea.hered crust elution-deposited ra.e ea.th ores

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journa. of Ra.e Ea.ths 2024年第8期42卷 1610-1619,I0008页

作者： Huifa.g Ya.g a.ya.g sha Zhengya. He Chenjie Wu Yua.la. Xu Jingjing Hu Zhiga. Xu Ru'a. Chi Key La.ora.ory for Green Chemica. Process of Ministry of Educa.ion School of Resources&Safety EngineeringWuhan Institute of TechnologyWuhan 430073China Key La.ora.ory of Resources Conversion a.d Pollution Control of the Sta.e Ethnic a.fa.0}s Commission College of Resources and Environmental ScienceSouth-Central MinzuUniversityWuhan430074China

a. present,in-situ lea.hing of wea.hered crust elution-deposited ra.e ea.th ores(WCE-DREOs) encounter with problems such a. long lea.hing cycles,slow infiltra.ion ra.e a.d low product *** order to solve the a.ove problems,the conventiona. lea.hing a.ent a.monium sulfa.e((NH_(4))_(2)SO_(4)) wa. compounded with polymeric surfa.ta.t polyethyleneimine(PEI) to form a.composite lea.hing *** effects of lea.hing tempera.ure,PEI *** ra.e a.d pH on lea.hing kinetics a.d permea.ility of ra.e ea.ths(RE) a.d a.uminum(a.) in orebody were *** is found tha. with tempera.ure increa.ing,the time required to rea.h lea.hing equilibrium for both RE a.d a. is shortened,the a.pa.ent a.tiva.ion energies of RE a.d a. a.e 14.79 a.d 13.45 kJ/mol,respectively,a.d the lea.hing processes a.e in a.corda.ce with the outer diffusion control,When the concentra.ions of(NH_(4))_(2)SO_(4) a.d PEI in the composite lea.hing a.ent a.e 2.0 wt% a.d 0.4 wt%;the time required to rea.h lea.hing equilibrium for RE a.d a. is a.out 50% shorter tha. tha. using(NH_(4))_(2)SO_(4) a.one,a.d the lea.hing efficiencies of RE a.e slightly higher tha. tha. of *** increa.ing the tempera.ure a.d flow ra.e of the composite lea.hing a.ent ca. improve the lea.hing efficiencies of RE a.d a.,but pH ha. neglected effects on the lea.hing efficiencies of *** PEI concentra.ions below 0,4 wt%, the a.dition of PEI promotes the lea.hing of RE a.d *** column lea.hing studies of the WCE-DREO,the a.dition of 0.4 wt% PEI to the tra.itiona. lea.hing a.ent(NH_(4))_(2)SO_(4) ha. no impa.t on the lea.hing efficiencies of ***,it ca. significa.tly increa.e the infiltra.ion ra.e of WCE-DREO,shortening the lea.hing time per 10 mL effluent from a.out 30 min for(NH_(4))_(2)SO_(4) lea.hing system to 20 min for the composite lea.hing *** lea.hing time is shortened by one-third,a.d the lea.hing cost is reduced,which ca. provide theoretica. guida.ce for the development a.d commercia. implementa

关键词： Polyethyleneimine Kinetics Ra.e ea.ths Permea.ility a.tiva.ion energy

Nitrogen-doping boosts *CO utiliza.ion a.d H2O a.tiva.ion on copper for improving CO2 reduction to C2+ products

在线全文

学校读者我要写书评

暂无评论

Green Energy & Environment 2024年第9期9卷 1459-1465页

作者： Yisen Ya.g Zhongha. Ta. Jia.ling Zha.g Jie Ya.g Renjie Zha.g sha Wa.g Yi Song Zhuizhui Su Beijing Na.iona. La.ora.ory for Molecula. Sciences CAS Laboratory of Colloid and Interface and Thermodynamics CAS Research/Education Center for Excellence in Molecular Sciences Center for Carbon Neutral Chemistry Institute of Chemistry Chinese Academy of Sciences School of Chemica. Sciences University of Chinese Academy of Sciences Key La.ora.ory of Photochemistry CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences

To improve the electroca.a.ytic tra.sforma.ion of ca.bon dioxide （CO2） to multi-ca.bon (C2+) products is of grea. *** we developed a.nitrogen-doped Cu ca.a.yst,by which the ma.imum C2+Fa.a.a.c efficiency ca. rea.h 72.7%in flow-cell system,with the pa.tia. current density rea.hing 0.62 a.*** in situ Ra.a. spectra.demonstra.e tha. the *CO a.sorption ca. be strengthened on such a.N-doped Cu ca.a.yst,thus promoting the*CO utiliza.ion in the subsequent C–C coupling ***,the wa.er a.tiva.ion ca. be well enha.ced by N doping on Cu *** to the synergistic effects,the selectivity a.d a.tivity for C2+products over the N-deoped Cu ca.a.yst a.e much improved.

关键词： Electroca.a.ytic CO 2 reduction rea.tion Copper ca.a.yst Doping Multi-ca.bon products In situ Ra.a. mea.urement

Efficient electroreduction of nitra.e via.enriched a.tive pha.es on copper-coba.t 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

Chinese Chemica. Letters 2024年第4期35卷 204-209页

作者： Ling Fa.g sha Wa.g Shun Lu Fengjun Yin Yujie Da. Lin Cha.g Hong Liu Chongqing Institute of Green a.d Intelligent Technology Chinese Academy of SciencesChongqing 400714China University of Chinese a.a.emy of Sciences Beijing 100049China

Electrochemica. conversion of nitra.e(NO_(3)~-) to a.monia.NH_(3)) ca. ta.get two birds with one stone well, in NO_(3)^(-)-conta.ning sewa.e remedia.ion a.d susta.na.le NH_(3) production. However, single meta.ba.ed ca.a.ysts a.e difficult to drive high-efficient NO_(3)~- remova. due to the multi-electron tra.sfer ***, we present a.ta.dem ca.a.yst with simple structure, Cu-Co bina.y meta. oxides(Cu-Co-O), by engineering intermedia.e pha.es a. ca.a.ytic a.tive species for NO_(3)~- conversion. Electrochemica. eva.ua.ion,X-ra. photoelectron spectroscopy, a.d in situ Ra.a. spectra.together suggest tha. the newly-genera.ed Cu-ba.ed pha.es wa. prone to NO_(3)~- to NO_(2)~- conversion, then NO_(2)~- wa. reduced to NH_(3) on Co-ba.ed species. a. a. a.plied potentia. of -1.1 V vs. sa.ura.ed ca.omel electrode, the Cu-Co-O ca.a.yst a.hieved NO_(3)~- -N remova. of 90% a.d NH_(3) fa.a.a.c efficiency of 81% for 120 min in 100 m L of 50 mg/L NO_(3)~- -N,consuming only 0.69 k Wh/mol in a.two-electrode system. This study provides a.fa.ile a.d efficient engineering stra.egy for developing high-performa.ce ca.a.ysts for electroca.a.ytic nitra.e conversion.

关键词： NO_(3)^(-)-conta.ning sewa.e remedia.ion Electroca.a.ytic reduction Copper-coba.t oxides Ta.dem rea.tivity Enriched a.tive pha.es