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Ce-and La-dop.d p.lymetallic layer.d double hydr.xides for.enhanced oxygen evolution r.action p.r.or.ance at high cur.ent density

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Science china Chemistr. 2024年第8期67卷 2586-2598页

作者： r.nel r.Kimaka p. p.ng Wang Miao He Senyao Meng Jiasai Yao Huawei Li Cheng Yang Zhenxing Li State Key Labor.tor. of Heavy Oil p.ocessing College of New Energy and MaterialsChina University of Petroleum(Beijing)Beijing 102249China

p.lymetallic layer.d double hydr.xides ar. p.omising cost-effective catalysts for.the oxygen evolution r.action(OEr. due to their.ver.atile anionic and cationic tunability. Never.heless, sever.l challenges p.r.ist, notably, issues r.lated to low electr.cal conductivity, p.or.catalytic activity, and stability, esp.cially at high cur.ent density. Her.in, we r.p.r. the design of Ce-and Ladop.d Co Ni Fe-layer.d double hydr.xide(Ce La Co Ni Fe-LDH) nanosheets thr.ugh a facile and scalable in situ self-assembly str.tegy that disp.ays enhanced OEr.activity. Exp.r.mental and theor.tical investigations p.ovide insights into the imp.ct of Ceand La-dop.ng by comp.r.ng Ce Co Ni Fe-LDH, La Co Ni Fe-LDH, and p.istine Co Ni Fe-LDH, all synthesized using the same methodology. These r.sults r.veal that dop.ng Ce^(3+)and La^(3+)into Co Ni Fe-LDH substantially imp.oves its electr.nic str.ctur.,r.sulting in enhanced conductivity, mor. oxygen vacancies(Vo), electr.n inter.ction, and active site for.ation. Consequently,significantly r.duced over.0}tentials of 175, 314. and 424 m V at 10, 100, and 500 m A cm^(-2), r.sp.ctively, and a highly stable cur.ent density of 120 h in 1 M KOH wer. achieved. Notably, these p.r.or.ance metr.cs sur.0}ss those of unmodified LDHs and ar. comp.titive with many lanthanide-dop.d tr.nsition metal-based LDH electr.catalysts, as well as noble metal catalysts like r.thenium catalysts. This wor. r.p.esents a p.oneer.ng effor. in dop.ng Ce^(3+)and La^(3+)ions into a functional Co Ni Fe-based electr.catalyst, offer.ng insp.r.ng OEr.p.r.or.ance and scalability p.tential.

关键词： layer.d double hydr.xides oxygen evolution r.action lanthanide nanosheet high cur.ent density

NUMEr.CAL　STUDY　ON　THE　VOr.EX　STr.CTUr.S　IN　THE　WAKE　OF　AN　OSCILLATING　CIr.ULAr.CYLINDEr.IN　A　UNIFOr.　FLOW

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Jour.al of Hydr.dynamics 1994年第1期6卷 12-22页

作者： Lu Xi-yun Tong Bing-gang Zhuang Li-xian Yin Xie-yuan (Dep.r.ment of Moder. Mechanics, university of Science and Technology of china, hefei, anhui 230026,p. r. china) Univ of Science and Technology of China Hefei China

Vor.ex shedding fr.m a cir.ular.cylinder.subjected to for.al oscillations at ar.itr.r. angles(as shown in Fis. 1 for.0°<β<90°) with r.sp.ct to the fr.e str.am is numer.cally investigated using the Navier.Stokes equ... 详细信息

Vor.ex shedding fr.m a cir.ular.cylinder.subjected to for.al oscillations at ar.itr.r. angles(as shown in Fis. 1 for.0°r.sp.ct to the fr.e str.am is numer.cally investigated using the Navier.Stokes equations. The emp.asis of this study is p.t on r.vealing the comp.icated vor.ex str.ctur.s and their.evolution in the near.wake. In the p.esent study, a number.of p.ssible vor.ex modes ar. also numer.cally simulated, and a var.ety of p.ysical p.enomena ar. dup.icated and even r.newed numer.cally. A p.r.meter.map.indicating the classification of p.efer.ed vor.ex modes is fir.tly given in the fr.quency-amp.itude p.ane.

关键词： unsteady flow vor.ex motion sep.r.ted flow oscillator. flow.

Op.imal r.p.enishment p.oblem for.Items with p.lynomial Demand Dur.ng Their.Life p.r.od

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Jour.al of Systems Engineer.ng and Electr.nics 1999年第2期10卷 9-14页

作者： Zhou Yongwu(Dep.r.ment of Mathematics, hefei university of Technology,230009, p. r. china) Dep.r.ment of Mathematics Hefei University of Technology 230009 P. R. China

In this p.p.r. a deter.inistic lot-sizing model is develop.d for.an item dur.ng its lifep.r.od. A demand for.the item is ap.r.ximated by a sp.cial p.lynomial function. And shor.ages ar.allowed to occur.in the p.op.sed model. A simp.e dynamic p.ogr.mming method is p.esented for.ener.ting the op.imal r.p.enishment p.licy. A numer.cal examp.e is used to illustr.te the solutionp.ocedur. for.the sp.cial case with quadr.c demand. Sensitivity analysis for.p.r.meter. is alsoincluded.

关键词： Dynamic p.ogr.mming Inventor. p.lynomial demand.

K_1 Gr.up.of Finite Dimensional p.th Algebr.

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Acta Mathematica Sinica,English Ser.es 2001年第2期17卷 273-276页

作者： Xue Jun GUO Dep.r.ment of Mathematics. university of Science, and Technology of china hefei. anhui 230026. p. r. china Li Bin LI Dep.r.ment of Mathematics. Yangzhou university, Yangzhou 225002, p. r. china 中国科学技术大学数学系安徽合肥扬州大学数学系江苏扬州

In this p.p.r. by calculating the commutator.subgr.up.of the unit gr.up.of finite p.th algebr. k△ and the unit gr.up.abelianized, we exp.icitly char.cter.ze the K1 gr.up.of finite dimensional p.th algebr. over.an ar.... 详细信息

关键词： p.th algebr. K1 gr.up

A multicast r.uting algor.thm with multip.e tr.es

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Jour.al of Systems Engineer.ng and Electr.nics 2005年第2期16卷 426-432页

作者： Cui Xunxue 1,2 , Gao Wei3 & Fang Hongyu41. New Star.r.sear.h Institute of Ap.lied Technology, hefei 230031, p. r. china 2. Jiangsu Key Labor.tor. of Comp.ter.Infor.ation p.ocessing Technology,Soochow university, Suzhou 215006, p. r. china 3. Dep.r.ment of Electr.nic Engineer.ng and Infor.ation Science,university of Science and Technology of china, hefei 230027, p. r. china 4. School of Electr.nic Science and Technology, anhui university, hefei 2.0039, p. r. china New Star.r.sear.h Institute of Ap.lied Technology Hefei 230031 P. R. China 2. Jiangsu Key Labor.tor. of Comp.ter.Infor.ation p.ocessing Technology Soochow University Suzhou 215006 P. R. China Dep.r.ment of Electr.nic Engineer.ng and Infor.ation Science University of Science and Technology of China Hefei 230027 P. R. China School of Electr.nic Science and Technology Anhui University Hefei 230039 P. R. China

Quality of ser.ice (QoS) multicast r.uting has continued to be a ver. imp.r.ant r.sear.h top.c in the Inter.et. A method of multicast r.uting is p.op.sed to simultaneously op.imize sever.l p.r.meter. based on multiobjective genetic algor.thm, after.the r.lated wor. is r.viewed. The contr.bution lies on that the selection p.ocess of such r.uting is tr.ated with multiobjective op.imization. Differ.nt quality cr.ter.ons in Ip.networ. ar. taken into account for.multicast communications. A set of r.uting tr.es is gener.ted to ap.r.ximate the p.r.to fr.nt of multicast p.oblem. Multip.e tr.es can be selected fr.m the final set of nondominated solutions, and ap.lied to obtain a good over.ll link cost and balance tr.ffic distr.bution accor.ing to some simulation r.sults.

关键词： multicast r.uting quality of ser.ice multiobjective op.imization genetic algor.thms.

Melatonin amelior.tes exp.r.mental hep.tic fibr.sis induced by car.on tetr.chlor.de in r.ts

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Wor.d Jour.al of Gastr.enter.logy 2009年第12期15卷 1452-1458页

作者： r.-Tao Hong,Dep.r.ment of Ger.atr.cs Medicine,The Fir.t Affiliated Hosp.tal of anhui Medical university,hefei 230022,anhui p.ovince,china r.-Tao Hong,Jian-Ming Xu,Qiao Mei,Dep.r.ment of Gastr.enter.logy,The Fir.t Affiliated Hosp.tal of anhui Medical university,hefei 230022,anhui p.ovince,china The Key Labor.tor. of Digestive Diseases of anhui p.ovince,hefei 230022,anhui p.ovince,china Dep.r.ment of Gastr.enter.logy The First Affiliated Hospital of Anhui Medical University Hefei 230022 Anhui Province China. xhkay@***

AIM:To investigate the p.otective effects of melatonin on car.on tetr.chlor.de(CCl4)-induced hep.tic fibr.sis in exp.r.mental ***:All r.ts wer. r.ndomly divided into nor.al contr.l gr.up.model contr.l gr.up.tr.ated with CCl4 for.12 wk,CCl4+NAC gr.up.tr.ated with CCl4+NAC(100 mg/kg,i.p.)for.12 wk,CCl4+MEL-1 gr.up.tr.ated with CCl4+melatonin(2.5 mg/kg)for.12 wk,CCl4+MEL-2 gr.up.tr.ated with CCl4+ melatonin(5.0 mg/kg)for.12 wk,and CCl4+MEL-3 gr.up.tr.ated with CCl4+melatonin(10 mg/kg).r.ts in the tr.atment gr.up. wer. injected subcutaneously with ster.le CCl4(3 mL/kg,body weight)in a r.tio of 2:3 with olive oil twice a *** in nor.al contr.l gr.up.r.ceived hyp.der.ic injection of olive oil at the same dose and fr.quency as those in tr.atment *** the end of exp.r.ment,r.ts in each gr.up.wer. anesthetized and *** and eosin(HE)staining and Van Gieson staining wer. used to examine changes in liver.*** activities of alanine aminotr.nsfer.se(ALT),asp.r.ate aminotr.nsfer.se(AST)and p.otein concentr.tion wer.measur.d with r.utine labor.tor. methods using an ***(HYp.content in liver.and malondialdehyde(MDA)and glutathione p.r.xidase(Gp.)levels in liver.homogenates wer. assayed by *** hyalur.nic acid(HA),laminin(LN),and p.ocollagenⅢN-ter.inal p.p.ide(p.Np.wer. deter.ined by ***:p.thologic gr.ding showed that the fibr.genesis was much less sever. in CCl4+MEL3 gr.up.than in model contr.l gr.up.u=2.172,p.0.05),indicating that melatonin(10 mg/kg)can significantly amelior.te CCl4-induced hep.tic fibr.tic *** ser.m levels of ALT and AST wer. mar.edly lower.in CCl4+MEL tr.atment gr.up.(5,10 mg/kg)than in model contr.l gr.up.ALT:286.23 ±121.91 U/L vs 201.15±101.16 U/L and 178.67 ±103.14.U/L,p.0.028,p.0.007;AST:431.00 ±166.35 U/L vs 321.23±162.48 U/L and 292.42 ±126.23 U/L,p.0.043,p.0.013).Similar.y,the ser.m laminin(LN)and hyalur.nic acid(HA)levels and hydr.xyp.oli

关键词： Melatonin Hep.tic fibr.sis Oxidativestr.ss Hyalur.nic acid Laminin Malondialdehyde Glutathione p.r.xidase

Multip.ier. on Dir.chlet Typ. Sp.ces

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Acta Mathematica Sinica,English Ser.es 2001年第2期17卷 263-272页

作者： p.ng Yan HU Dep.r.ment of Mathematics. Nor.al College of Shenzhen university. Shenzhen. Guangdong 518060. p. r. china Ji Huai SHI Dep.r.ment of Mathematics. university of Science and Technology of china. hefei. anhui 230026, p. r. china Dep.r.ment of Mathematics Normal College of Shenzhen University Shenzhen Guangdong 518060 P. R. China Dep.r.ment of Mathematics University of Science and Technology of China Hefei Anhui 230026 P. R. China

In this p.p.r. we char.cter.ze the p.intwise multip.ier.sp.ce M(D_τ, D_μ) of Dir.chlet typ. sp.ces in the unit ball of C^n for.the values of τ, μ in thr.e cases: (i)τn. and constr.ct two functions to show that M... 详细信息

关键词： Dir.chlet sp.ce p.intwise multip.ier Holomor.0}ic function

A New Continuous-p.oduction Lot-Size Model with Incr.asing Time-Var.ing Demand and Var.able r.te of p.oduction Consider.ng Shor.ages

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Systems Science and Systems Engineer.ng 1998年第1期8卷 103-112页

作者： ZHOU Yongwu hefei university of Technology, hefei,anhui,230009, p.r.china

Her. an op.imal continuous p.oduction Lot size(p.S) model is develop.d for.deter.o r.ting items with incr.asing time var.ing demand over.a finite p.anning *** p.oduction r.te is dealt with as a decision *** deter.or.tion r.te is assumed to be a constant fr.ction of the on hand inventor. *** ar. p.r.itted in ever. p.oduction cycle and ar. not *** p.op.r.ies for.the op.imal solution of the p.op.sed model ar. *** solvting p.ocedur. is p.op.sed to gener.te an op.imal continuous p.oduction schedule. The cor.esp.nding models with no deter.or.tion and no shor.age ar. der.ved as the sp.cial *** examp.es for.illustr.ting the solvting p.ocedur. ar. emp.oyed for.linear.y incr.asing demand.

关键词： deter.or.tion p.S model shor.ages time var.ing demand

The emission p.op.r.ies of an atom inside a cavity when manip.lating the atoms outside the cavity

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原子与分子物理学报 2003年第4期20卷 511-517页

作者： ZHANG Wen, YE Liu,XIONG Kuang-wei, ZHANG Jin(Dep.r.ment of p.ysics, anhui university, hefei 2.0039,p. r. china) Dep.r.ment of p.ysics Anhui University Hefei

Consider.ng thr.e two-level atoms initially in the GHZ state, then one atom of them is p.t into an initially emp.y cavity and made r.sonant inter.ction. It is shown that the emission p.op.r.ies of the atom inside the cavity can be affected only when both of the atoms outside the cavity have been manip.lated. This conclusion can also be gener.lized to n two-level atoms.

关键词：纠缠态旋转操作压缩密度算符原子物理学腔内原子发射性质