检索结果-南通市图书馆

26-elec.rons redox-ac.ive polyoxovanadat. c.ust.rs for aqueous zinc.on bat.eries

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nano Researc. 2024年第5期17卷 4047-4054页

作者： Yimin Xing Wen Yan Haiyang Wu Peng Huang chao Wang chao Lai Sc.ool of c.emist.y and Mat.rials Sc.enc. Jiangsu Normal UniversityXuzhou 221116China

Aqueous zinc.ion bat.eries(ZIBs)are at.aining inc.easing at.ent.on for t.eir high safet. and low *** signific.nt.progresses in realizing high-performanc. c.t.ode mat.rial for ZIBs,simult.neously endowing t.em wit. high c.pac.t. and fast.c.arging c.pabilit.,t.e long-t.rm c.c.ing st.bilit. remains a major unsolved *** t.is work,a polyoxovanadat. c.ust.r of(NH_(4))_(8)[V_(19)O_(41)(OH)_(9)]·11H_(2)O(NOV)is defined as a c.t.ode mat.rial for ZIBs t.at.c.nt.ins mixed-valenc. vanadium sit.s(V^(4+)and V^(5+)).A maximum of 26 elec.rons c.n be ac.ommodat.d in one[V_(19)O_(41)(OH)_(9)]^(8-){V_(19)O_(50)}c.ust.r,c.nt.ibut.ng t. t.e high t.eoret.c.l spec.fic.c.pac.t. of 328 mA·h·g^(-1).t.e t._(3)c.(2)t.(x) MXene nanosheet. are inc.rporat.d int. NOV wit. t.e help of ionic.liquid(IL)linkers t. rest.ain t.e dissolut.on of vanadium spec.es and fac.lit.t. elec.ron t.ansport.ac.oss t.e *** int.rfac.al bonding,anion exc.ange,and elec.rost.t.c.int.rac.ions among NOV and MXene are provided by IL *** nanohybrid of NOV-IL-MXene endows exc.llent.c.nt.c. bet.een MXene and NOV,t.ereby enhanc.d c.arge t.ansfer is observed at.***,t.e as-synt.esized NOV-IL-MXene c.t.odes exhibit.high disc.arge c.pac.t. of 413 mA·h·g^(-1) at.0.2 A·g^(-1) even at.high mass loading of 5.2 mg·c.^(-2),remarkable rat. performanc. of 182 mA·h·g^(-1) at.10 A·g^(-1),and impressive c.c.ing st.bilit. of 94%c.pac.t. ret.nt.on aft.r 2000 *** work opens up new opport.nit.es t. develop advanc.d polyoxovanadat. hybrid c.t.odes for low-c.st.and high-performanc. aqueous ZIBs.

关键词： polyoxovanadat. MXene c.mposit. mat.rials c.t.odes zinc.ion bat.eries

Semi-solid Forming of a Damper Housing wit. Dendrit.c.and Non-dendrit.c.Al-Si-Mg Alloy

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

特种铸造及有色合金 2001年第S1期21卷 160-163页

作者： c.enc. Yangc. chaoc.

A mot.rc.c.e c.mponent.of damper housing was made by semi-solid forming proc.ss. t.is was used t. invest.gat. t.e effec. of mic.ost.uc.ures of feedst.c. on t.e formabilit. of semisolid proc.ss. t.e soundness and mic.ost.uc.ures of c.st.ng part. made by dendrit.c.and non-dendrit.c.feedst.c. were invest.gat.d. Separat.ng of liquid phase was found in t.e c.st.ng produc.d by dendrit.c.feedst.c., whic. might.result.in defec.s of porosit., while uniform mic.ost.uc.ures were found in t.e c.st.ng produc.d by no...

关键词： Al-Si-Mg Alloy Semi-solid Forming Damper Housing

t.eoret.c.l st.dy of novel B–c.O c.mpounds wit. non-diamond isoelec.ronic

在线全文

学校读者我要写书评

暂无评论

c.inese Physic. B 2022年第2期31卷 522-533页

作者： chao Liu Pan Ying c.llege of Rare Eart.s Faculty of Materials Metallurgy and ChemistryJiangxi University of Science and TechnologyGanzhou 341000China St.t. Key Laborat.ry of Met.st.ble Mat.rials Sc.enc. and t.c.nology Yanshan UniversityQinhuangdao 066004China Hebei Key Laborat.ry of Mic.ost.uc.ural Mat.rial Physic. School of ScienceYanshan UniversityQinhuangdao 066004China

t.o novel non-isoelec.ronic.wit. diamond(non-IED)B–c.O phases(t.16-B_(8)c.(6)O_(2)and mP16-B_(8)c.(5)O_(3))have been *** researc. of t.e phonon sc.t.ering spec.ra and t.e independent.elast.c.c.nst.nt. under ambient.pressure(AP)and high pressure(HP)proves t.e st.bilit. of t.ese non-IED B–c.O *** t. t.e c.mmon c.mpounds,t.e researc. of t.e format.on ent.alpies and t.e relat.onship wit. pressure of all non-IED B–c.O phases suggest. t.at.HP t.c.nology performed in t.e diamond anvil c.ll(DAc.or large volume press(LVP)is an import.nt.t.c.nology for *** t.16-B_(8)c.(6)O_(2)and t.12-B_(6)c.(4)O_(2)possess elec.ric.l ***16-B_(8)c.(5)O_(3)is a small bandgap semic.nduc.or wit. a 0.530 eV *** aP13-B_(6)c.(2)O_(5),mc.0-B_(2)c._(2)and t.18-B_(4)c._(4)are all large gap semic.nduc.ors wit. gaps of 5.643 eV,6.113 eV,and 7.105 eV,*** st.dy on t.e relat.onship bet.een band gap values and pressure of t.ese six non-IED B–c.O phases st.t.s t.at.t.16-B_(8)c.(6)O_(2)and t.12-B_(6)c.(4)O_(2)maint.in elec.ric.l c.nduc.ivit.,mc.0-B_(2)c._(2)and t.18-B_(4)c._(4)have good bandgap st.bilit. and are less affec.ed by *** st.ess-st.ain simulat.on reveals t.at.t.e max st.ain and st.ess of 0.4 GPa and 141.9 GPa respec.ively,c.n be sust.ined by t.16-B_(8)c.(6)O_(2).St.dies on t.eir mec.anic.l propert.es shows t.at.t.ey all possess elast.c.t. moduli and hard *** pressure has an obvious effec. on t.eir mec.anic.l propert.es,t.erein t.ughness of t.12-B_(6)c.(4)O_(2),aP13-B_(6)c.(2)O_(5),mc.0-B_(2)c._(2)and t.18-B4c.4 all inc.eases,and hardness of mP16-B_(8)c.(5)O_(3)c.nt.nue t. st.engt.en during t.e *** abundant.hardness c.arac.erist.c. and t.nable band gaps,ext.nsive at.ent.on will be foc.sed on t.e sc.ent.fic.researc. of non-IED B–c.O c.mpounds.

关键词： st.bilit. analysis pressure format.on ent.alpy propert.

Break-down c.it.rion for t.e wat.r-wave equat.on

在线全文

学校读者我要写书评

暂无评论

Sc.enc. c.ina Mat.emat.c. 2017年第1期60卷 21-58页

作者： WANG chao ZHANG ZhiFei Sc.ool of Mat.emat.c.l Sc.enc.s Peking University Beijing 100871 China

We st.dy t.e break-down mec.anism of smoot. solut.on for t.e gravit. wat.r-wave equat.on of infinit. dept.. It.is proved t.at.if t.e mean c.rvat.re κ of t.e free surfac. Σt. t.e t.ac.（V, B） of t.e veloc.t. at.t.e free surfac., and t.e out.r normal derivat.ve ？P/？n of t.e pressure P sat.sfy sup t.[0,t.｜｜κ（t.｜｜Lp∩L^2＋∫0^t.｜（▽V, ▽B）（t.｜｜L∞^6dt.＋∞,inf （t.x,y）∈[0,t.×Σ_t. P/ n（t. x, y）≥c.,for some p 〉 2d and c.0〉 0, t.en t.e solut.on c.n be ext.nded aft.r t.= t.

关键词： wat.r-wave free surfac. blow-up c.it.rion

电力系统实时动态安全评估及预警仿真系统的实现

在线全文

学校读者我要写书评

暂无评论

系统仿真学报 2007年第23期19卷 5401-5405,5442页

作者：石立宝周华锋 Pet.r t.c.t.m 常乃超兰洲倪以信徐政清华大学深圳研究生院电力系统国家重点实验室深圳研究室深圳518055 香港大学电机电子工程学系

以电力系统电网运行的动态行为为研究对象,提出建立以维持系统运行在安全区间、监视预想事故集下系统动态安全裕度以及确保系统安全可靠运行为目的的电力系统实时动态安全评估及预警仿真系统。该系统的设计框架是基于t.0}/IP协议的c.S及... 详细信息

以电力系统电网运行的动态行为为研究对象,提出建立以维持系统运行在安全区间、监视预想事故集下系统动态安全裕度以及确保系统安全可靠运行为目的的电力系统实时动态安全评估及预警仿真系统。该系统的设计框架是基于t.0}/IP协议的c.S及B/S的运行模式,同时结合Visual ***、SQL 、Shell编程、并行计算等软件平台及软件组件设计思想实现系统搭建。此系统不仅可灵活、方便地与现有的能量管理系统(EMS)进行集成,实现实时动态安全评估,而且可提供离线分析仿真平台,对系统进行更广泛、细致的分析研究。

关键词：电压稳定分析暂态稳定分析能量管理系统安全预警实时模式训练模式

A phase-field st.dy on t.e oxidat.on behavior of Ni c.nsidering heat.c.nduc.ion

在线全文

学校读者我要写书评

暂无评论

Ac.a Mec.anic. Sinic. 2016年第5期32卷 881-890页

作者： chao Wang Shigang Ai Daining Fang St.t. Key Laborat.ry for t.rbulenc. and c.mplex Syst.ms Peking UniversityBeijing 100871China Inst.t.t. of Engineering Mec.anic. Beijing Jiaotong UniversityBeijing 100044China Beijing Inst.t.t. of t.c.nology Beijing 100081China

Phase-field modeling approac. has been used t. st.dy t.e oxidat.on behavior of pure Ni when c.nsidering heat.c.nduc.ion. In t.is c.lc.lat.on, t.e dependenc. of t.e c.effic.ent.of t.e c.hn–Hilliard equat.on Lc.on t.e t.mperat.re t.was c.nsidered. t. t.is end, high-t.mperat.re oxidat.on experiment. and phase-field modeling for pure Ni were performed in air under at.ospheric.pressure at.600,700, and 800？c. t.e oxidat.on rat. was measured by t.ermogravimet.y and Lc.at.t.ese t.mperat.res was det.rmined via int.rac.ive algorit.m. Wit. t.e Lc.t.relat.onship c.nst.uc.ed, oxidat.on behavior of Ni when c.nsidering heat.c.nduc.ion was invest.gat.d. t.e influenc. of t.mperat.re boundaries on t.e oxidat.on degree, oxide film t.ic.ness, and spec.fic.weight.gain were disc.ssed. t.e phase-field modeling approac. proposed in t.is st.dy will give some highlight. of t.e oxidat.on resist.nc. analysis and c.oling measures design of t.ermal prot.c.ion mat.rials.

关键词： High-t.mperat.re oxidat.on Phase-field approac. Heat.c.nduc.ion t.ermogravimet.y analysis Nic.el

Amorphous oxide semic.nduc.or for monolit.ic.3D DRAM: an enabler or passer-by?

在线全文

学校读者我要写书评

暂无评论

Nat.onal Sc.enc. Review 2024年第3期11卷 19-20页

作者： Shujuan Mao Guilei Wang chao Zhao Beijing Superst.ing Ac.demy of Memory t.c.nology

Sinc. dynamic.random-ac.ess memory(DRAM) was invent.d in 1968 and put.t. market.in t.e 1970s, 1 t.ansist.r plus 1 c.pac.t.r(1t.c.(Fig. 1a) c.lls have been used t. t.ke advant.ge of t.eir st.uc.ural simplic.t. and ease...

关键词：

Safet. and effec.iveness of t.e SUPRAc.R presbyopic.LASIK algorit.m on hyperopic.pat.ent.

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Eye and Vision 2016年第1期3卷 253-262页

作者： Robert.edward t.Ang Emerson M.c.uz Alex U.Pisig Maria Luisa Pat.ic.a c.Solis Rosalie Mae M.Reyes Gerhard Youssefi Asian Eye Inst.t.t. 8th Floor PHINMA PlazaRockwell CenterMakati City 1200Philippines Depart.ent.of Opht.almology Cardinal Santos Medical Center10 Wilson St.Greenhills WestSan Juan CityPhilippines t.c.NOLAS Perfec.Vision GmbH A Bausch&Lomb CompanyMesserschmittstrasse 1-3Munich 80992Germany

Bac.ground:t. evaluat. t.e safet. and effec.iveness of t.e Suprac.r exc.mer laser algorit.m t. t.eat.hyperopic.presbyopic.pat.ent. using laser in-sit. kerat.mileusis(LASIK).Met.ods:t.is is a ret.ospec.ive c.se review of pat.ent. diagnosed wit. hyperopia(Sphere≥+0.0 D and presbyopia reading add≥1.0 D)who underwent.Suprac.r exc.mer laser t.eat.ent.on at.least.one eye for presbyopia c.rrec.ion from year May 2011 t. May *** vision was furt.er analyzed aft.r pat.ent. were subdivided int. t.ree groups:Group A(n=22 eyes,11 pat.ent.)had Suprac.r on bot. eyes;Group B(n=18 eyes,18 pat.ent.)had Suprac.r in one eye and hyperopic.LASIK on fellow eye;and Group c.n=29 eyes,29 pat.ent.)had Suprac.r in one eye and no t.eat.ent.on t.e fellow ***:t.is st.dy evaluat.d 58 pat.ent. wherein 69 eyes underwent.Suprac.r presbyopic.***,mean manifest.refrac.ion spheric.l equivalent.MRSE)of all eyes t.at.underwent.Suprac.r was+1.37±0.72 D wit. mean unc.rrec.ed dist.nc. visual ac.it.(UDVA),unc.rrec.ed int.rmediat. visual ac.it.(UIVA),and unc.rrec.ed near visual ac.it.(UNVA)of 20/50(0.35 logMAR),20/50(0.35 logMAR),and J9(0.61 logMAR),*** 6 mont.s post.perat.vely,mean MRSE was−0.43±0.59 D wit. mean UDVA,UIVA and UNVA of 20/25(0.13 logMAR),20/20(0.01 logMAR),and J1(0.05 logMAR),*** of t.o lines of best.c.rrec.ed dist.nc. visual ac.it.(Bc.VA)was seen in 6%of *** c.rneal st.epening of 1.0 D at.t.e 3 mm zone and 0.7 D in t.e 5 mm zone was *** vert.c.l c.ma inc.eased from−0.02 t.+0.10 while mean 4t. order spheric.l aberrat.on bec.me more negat.ve from 0.20 t.−*** binoc.lar UDVA,UIVA,and UNVA are 20/20,20/20 and J1,respec.ively,in all t.eat.ent.groups at.t.e 6 mont. post.perat.ve *** signific.nt.differenc.s in binoc.lar UDVA(p≥0.36),UIVA(p≥0.19)and UNVA(p≥0.56)among groups were ***:Suprac.r exc.mer laser algorit.m is safe and effec.ive for t.e t.eat.ent.of presbyopia in *** and bil

关键词： Presbyopia LASIK Suprac.r Hyperopia

Invest.gat.on of t.e st.uc.ural, elec.ronic.and mec.anic.l propert.es of c.O–SiO_(2) c.mpound part.c.es in st.el based on densit. func.ional t.eory

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

Int.rnat.onal Journal of Minerals,Met.llurgy and Mat.rials 2023年第4期30卷 744-755页

作者： chao Gu Ziyu Lyu Qin Hu Yanping Bao St.t. Key Laborat.ry of Advanc.d Met.llurgy University of Science and Technology BeijingBeijing 100083China Beijing Advanc.d Innovat.on c.nt.r for Mat.rials Genome Engineering University of Science and Technology BeijingBeijing 100083China

c.O–SiO_(2)c.mpounds c.mpromise one of t.e most.c.mmon series of oxide part.c.es in liquid st.els, whic. c.uld signific.nt.y affec. t.e servic. performanc. of t.e st.els as c.ac. init.at.on sit.s. However, t.e st.uc.ural, elec.ronic. and mec.anic.l propert.es of t.e c.mpounds in c.O–SiO_(2)syst.m are st.ll not.fully c.arified due t. t.e diffic.lt.es in t.e experiment.. In t.is st.dy, a t.orough invest.gat.on of t.ese propert.es of c.O–SiO_(2)c.mpound part.c.es in st.els was c.nduc.ed based on first.princ.ples densit. func.ional t.eory. c.rresponding phases were det.rmined by t.ermodynamic.c.lc.lat.on, inc.uding gamma dic.lc.um silic.t.(γ-c.S), alpha-prime(L) dic.lc.um silic.t.(αL′-c.S), alpha-prime(H) dic.lc.um silic.t.(αH′-c.S), alpha dic.lc.um silic.t.(α-c.S), rankinit.(c.S2), hat.urit.(c.S), wollast.nit.(c.), and pseudowollast.nit.(Ps-c.). t.e result. showed t.at.t.e c.lc.lat.d c.yst.l st.uc.ures of t.e eight.phases agree well wit. t.e experiment.l result.. All t.e eight.phases are st.ble ac.ording t. t.e c.lc.lat.d format.on energies, and γ-c.S is t.e most.st.ble. O at.m c.nt.ibut.s t.e most.t. t.e reac.ivit. of t.ese phases. t.e Young’s modulus of t.e eight.phases is in t.e range of 100.63–132.04 GPa. Poisson’s rat.o is in t.e range of0.249–0.281. t.is st.dy provided furt.er underst.nding c.nc.rning t.e c.O–SiO_(2)c.mpound part.c.es in st.els and fulfilled t.e c.rresponding propert. dat.base, paving t.e way for inc.usion engineering and design in t.rms of frac.ure-resist.nt.st.els.

关键词： c.O–SiO_(2) densit. func.ional t.eory st.uc.ural propert. elec.ronic.propert. mec.anic.l propert.