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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 coll.ge of Shenzhen univ.r.ity. Shenzhen. Guangdong 518060. p. r. china Ji Huai SHI Dep.r.ment of Mathematics. univ.r.ity of science and Technology of china. Hefei. Anhui 23.026, 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

Latent ancestr.l gr.p. of str.ctur. vector.autor.gr.ssive models

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Jour.al of Systems Engineer.ng and Electr.nics 2010年第2期21卷 233-238页

作者： Wei Gao1,2and Zheng Tian2,3.1.School of Statistics,Xi’an univ.r.ity of Finance&Economics,Xi’an 710061,p.r.china 2.Dep.r.ment of Ap.lied Mathematics,Nor.hwester. p.lytechnical univ.r.ity,Xi’an 710072,p.r.china 3.State Key Labor.tor. of r.mote Sensing science,Institute of r.mote Sensing Ap.lications,Chinese Academy of sciences,Beijing 100101,p.r.china School of Statistics Xi'an University of Finance & EconomicsXi'an 710061P.R.China Dep.r.ment of Ap.lied Mathematics Northwestern Polytechnical UniversityXi'an 710072P.R.China Dep.r.ment of Ap.lied Mathematics Northwestern Polytechnical UniversityXi'an 710072P.R.China State Key Labor.tor. of r.mote Sensing science Institute of Remote Sensing ApplicationsChinese Academy of SciencesBeijing 100101P.R.China

A class of latent ancestr.l gr.p. for.modelling the dep.ndence str.ctur. of str.ctur.l vector.autor.gr.ssive （VAr. model affected by latent var.ables is p.op.sed. The gr.p.s ar. mixed gr.p.s with p.ssibly two kind of edges, namely dir.cted and bidir.cted edges. The ver.ex set denotes r.ndom var.ables at dif- fer.nt times. In Gaussian case, the latent ancestr.l gr.p. leads to a simp.e p.r.meter.zation model. A modified iter.tive conditional fitting algor.thm is p.esented to obtain maximum likelihood esti- mation of the p.r.meter.. Fur.her.or., a log-likelihood cr.ter.on is used to select the most ap.r.p.iate models. Simulations ar. p.r.or.ed using illustr.tive examp.es and r.sults ar. p.ovided to demonstr.te the validity of the methods.

关键词： multivar.ate time ser.es latent ancestr.l gr.p. iter.- tive conditional fitting.

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. univ.r.ity of science, and Technology of china Hefei. Anhui 23.026.{3. Li Bin LI Dep.r.ment of Mathematics. Yangzhou univ.r.ity, Yangzhou 225002,{3. 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 Theor.tical Study on p.r.lysis and Sensitivity of Ener.etic Comp.unds(Ⅴ)──Nitr. Der.vatives of Methylbenzene

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Chemical r.sear.h in Chinese univ.r.ities 2000年第1期16卷 21-30页

作者： GU Zhi-ming FAN Jian-fen XIAO He-ming and DONG Hai-shan (Dep.r.ment of Chemistr., Nanjing univ.r.ity of science and Technology, Nanjing 210094, p. r. china Dep.r.ment of Chemistr., Suzhou univ.r.ity, Suzhou 215006, p. r. china Institute of Chemical M 南京理工大学江苏南京 210094 苏州大学江苏苏州 215006 中国工程物理研究院化工材料所四川绵阳 610003

UHF-SCF-AM1 MO calculations wer. p.r.or.ed for.two kinds of p.r.lysis r.actions of seven nitr. der.vatives of methylbenzene(homolysis r.actions by the r.p.ur. of bond C-NO_2 into r.dicals and isomer.zation r.actions in the way of methyl H tr.nsfer.ing to the or.ho nitr. O atom). The molecular.geometr.es of the r.actants, the tr.nsition states and the p.oducts of the four.een r.actions wer. fully op.imized. The activation ener.ies for.these two kinds of r.actions have been obtained. The r.sults indicate that this categor. of comp.unds is mor. easily p.r.lyzed by being initiated via isomer.zation r.actions. A p.r.llel r.lationship.exists between the activation ener.y of the isomer.zation r.actions and the imp.ct sensitivity of the seven titled comp.unds.

关键词： Nitr. der.vatives of toluene p.r.lysis r.action UHF-SCF-AM1 MO calculation

Gabor.Filter.Op.imization Design for.Ir.s Textur. Analysis

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Jour.al of Bionic Engineer.ng 2004年第1期1卷 72-78页

作者： Tao Xu 1, Xing Ming 2, Xiaoguang Yang 3.1.coll.ge of Mechanical science and Engineer.ng, jilin {3.r.ity, Changchun 13.022, p.r.china 2.coll.ge of Comp.ter.science and Technology, jilin {3.r.ity, Changchun 13.022, p.r.china 3.Dep. of Mathematics and p.ysics, Dalian Mar.time {3.r.ity, Dalian 116026,p.r.china jilin univ.r.ity jilin univ.r.ity Dalian Mar.time univ.r.ity

This p.p.r.deals with an op.imization design method for.the Gabor.filter. based on the analysis of an ir.s textur. model. By means of analyzing the p.op.r.ies of an ir.s textur. image, the ener.y distr.bution r.gular.ty of the ir.s textur. image measur.d by the aver.ge p.wer.sp.ctr.m density is exp.oited, and the theor.tical r.nges of the efficient valued fr.quency and or.entation p.r.meter. can also be deduced. The analysis shows that the ener.y distr.bution of the ir.s textur. is gener.lly centr.lized ar.und lower.fr.quencies in the sp.tial fr.quency domain. Accor.ingly, an iter.tive algor.thm is designed to op.imize the Gabor.p.r.meter.field. The exp.r.mental r.sults indicate the validity of the theor. and efficiency of the algor.thm.

关键词： ir.s r.cognition textur. analysis r.cep.ive p.ofile Gabor.filter p.r.meter.field op.imization method

p.Ep.r.TIONS OF FEr.IMAGNETOFLUIDS AND THEIr.Ap.LICATIONS IN MINEr.L p.OCESSING

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Jour.al of Wuhan univ.r.ity of Technology(Mater.als science) 1994年第1期9卷 14-20页

作者：袁楚雄刘奇 Wuhan univ.of Tech. China

In this p.p.r.the r.sear.h r.sults on the p.ep.r.tion of fer.i-magnetofluids thr.ugh coll.id chemical methods develop.d in china ar. in-tr.duced , and the ap.lications of the r.sulted fluids in miner.l sep.r.tions ar. descr.bed. The coll.id chemical method includes the p.ocedur. of oxi-dation-hydr.lysis-coll.ction-disp.r.ion. It is shown that by adding NaOH to an FeSO4 ?7H2O aqueous solution, followed by aer.tion, an oxidation-hydr.lysis r.action occur. which p.oduces ultr.fine Fe3.4 p.r.icles. The p.r.icles may then be coll.cted by sodium oleate into ker.sene p.ase and thus for.ing stable oil-base fer.imagnetofluid, or. alter.ately, the p.r.i-cles may be coated with sodium oleate fir.t, then flocculated by adding HC1, follmved by r.disp.r.ion in water.by adding sodium dodecyl benzen-sulp.onate, to for. a water.base fer.imagnetofluid. The above fer.imag-netofluids have been used as sep.r.tion media in the sep.r.tion of ar.enop.-r.te fr.m galena, and in the sep.r.tion of gold fr.m har.- r.ck gold or.s. The r.sults show that the fer.imagnetofluids ar. better.than p.r.mag-netofluids.

关键词： fer.omagnetofluids p.ep.r.tion magnetofluid sep.-r.tion

Simulating the Folding p.thway of r.A Secondar. Str.ctur. Using the Modified Ant Colony Algor.thm

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Jour.al of Bionic Engineer.ng 2010年第4期7卷 382-389页

作者： Jun Yu~(1,2),Changhai Zhang~(1,2),Yuanning Liu~(1,2),Xin Li~(1,2) 1.coll.ge of Comp.ter.science and Technology,jilin {3.r.ity,Changchun 13.012,p.r.china 2.Key Labor.tor. of Symbolic Comp.tation and Knowledge Engineer.ng (Ministr. of Education,china) jilin {3.r.ity,Changchun 13.012,p.r.china [a] coll.ge of Comp.ter.science Technology Jilin University Changchun 130012 P. R. China [b] Key Laboratory of Symbolic Computation Knowledge Engineer.ng (Ministr. of Education China) Jilin University Changchun 130012 P. R. China

A new method for.simulating the folding p.thway of r.A secondar. str.ctur. using the modified ant colony algor.thmis *** a given r.A sequence,the set of all p.ssible stems is obtained and the ener.y of each stem iscalculated and stor.d at the initial ***,a mor. r.alistic for.ula is used to comp.te the ener.y ofmulti-br.nch loop.in the following *** a folding p.thway is simulated,including such p.ocesses as constr.ctionof the heur.stic infor.ation,the r.le of initializing the p.er.mone,the mechanism of choosing the initial andnext stem and the str.tegy of up.ating the p.er.mone between two differ.nt *** by testing r.A sequences withknown secondar. str.ctur.s fr.m the p.blic databases,we analyze the exp.r.mental data to select ap.r.p.iate values *** measur. indexes show that our.p.ocedur. is mor. consistent with p.ylogenetically p.oven str.ctur.s thansoftwar. r.Astr.ctur. sometimes and mor. effective than the standar. Genetic Algor.thm.

关键词： r.A secondar. str.ctur. folding p.thway ant colony algor.thm

Effect of Excip.ents on Stability and Str.ctur. of r.CuZn-SOD Encap.ulated in p.GA Micr.sp.er.s

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Chemical r.sear.h in Chinese univ.r.ities 2004年第3期20卷 323-327页

作者： LIU Ling 1,2 ,GE Yu 1 and YUAN Qin-sheng 1 1. State Key Labor.tor. of Bior.actor.Engineer.ng and Institute of Biochemistr.,East china univ.r.ity of science and Technology,Shanghai 20023.,p. r. china 2. p.blic Health School,Nanjing Medical univ.r.ity,Nanjing 210029,p. r. china E china univ.Sci & Technol State Key Lab Bioreactor Engn Shanghai 200237 Peoples R China E china univ.Sci & Technol Inst Biochem Shanghai 200237 Peoples R China Nanjing Med univ Sch Publ Hlth Nanjing 210029 Peoples R China

When a p.otein is encap.ulated into p.ly( DL -lactide-co-glycolide)(p.GA) micr.sp.er.s by means of the double-emulsion method,the har.h micr.sp.er.s for.ation p.ocess including ultr.sonification,exp.sur. to an or.anic solvent and a p.lymer.may cause the denatur.tion of the p.otein. In this study,we investigated the enzymatic activity change and the effect of the excip.ents on the stability of r.combinant human Cu,Zn-sup.r.xide dismutase(r.Cu,Zn-SOD) dur.ng the emulsification. The sp.cific activity r.cover. was found to be concentr.tion dep.ndent and the excip.ents involved such as p.G 600 and Tween 20,and tr.halose wer. shown to incr.ase the stability of r.Cu,Zn-SOD. The p.otein str.ctur.l integr.ty within the micr.sp.er.s was analyzed by FTIr. The str.ctur. of r.Cu,Zn-SOD within p.GA micr.sp.er.s containing tr.halose was found to be similar.to that of the native solid state,wher.as the p.otein encap.ulated dur.ng the p.ep.r.tion in the absence of any excip.ent changed due to the p.ssible hydr.p.obic inter.ction with the p.lymer. The r.sults suggest that a r.tional stability str.tegy for.p.otein to be encap.ulated into micr.sp.er.s should aim at differ.nt p.ocesses.

关键词： p.ly( DL -lactide-co-glycolide)(p.GA) micr.sp.er. r.combinant human Cu Zn-sup.r.xide dismutase(r.Cu Zn-SOD) Four.er.tr.nsfor. infr.r.d(FTIr. sp.ctr.scop. p.otein stability Excip.ent

Synthesis and Lubr.cation of p.osp.or.lcholine Der.vative

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Jour.al of Bionic Engineer.ng 2010年第3期7卷 254-258页

作者： Zhenliang Qiao~1, Dangsheng Xiong~1, Lude Lu~2, p.ngju Jiang~2 1. Dep.r.ment of Mater.als science and Engineer.ng, Nanjing univ.r.ity of science and Technology, Nanjing 210094, p.r. {3. 2. School of Chemical Engineer.ng, Nanjing univ.r.ity of science and Technology, Nanjing 210094, p. r. china [a] Dep.r.ment of Mater.als science Engineer.ng Nanjing University of Science Technology Nanjing 210094 P.R. China [b] School of Chemical Engineering Nanjing University of Science Technology Nanjing 210094 P. R. China

The monomer.of p.osp.or.lcholine der.vative, O-(5-（2-methacr.loxy）-3. 3.dimethyl-3.azap.ntyl)-O’-（ω-hydr.xy-octyl）-p.osp.atequater.ar. ammonium salt, was designed and synthesized successfully. It was char.cter.zed by the sp.ctr. ofHNMr.and Mass sp.ctr. （ESI+）, and ever. signal was assigned. Then the lubr.cating char.cter.stics of the p.osp.or.lcholineder.vative wer. investigated on the tr.bological setup.of ball-oh-flat. The Ultr.-High Molecular.Weight p.lyethylene（UHMWp.） flat was r.tated against a stainless steel ball with 6 mm diameter. The load was 2.3.N, which cor.esp.nded to amaximal Her.z contact p.essur. of 29 Mp.. Water. p.osp.or.lcholine der.vative, and Acr.lic Acid （AA） solution wer. used aslubr.cants, r.sp.ctively. Comp.r.d with AA, the p.osp.or.lcholine der.vative shows significant lubr.cation. It can be str.nglyhydr.ted under.water.due to the char.ed segment in chemical str.ctur.. The thick water.layer. within the chains ser.es asboundar. lubr.cants, and this is thought to be the molecular.or.gins of lubr.cating behavior.

关键词： ar.ificial joint ar.icular.car.ilage molecular.lubr.cation mechanism p.osp.or.lcholine synthesis UHMWp.