简介：LetXbeaweaklyCauchynormedspaceinwhichtheparallelogramlawholds,CbeaboundedclosedconvexsubsetofXwithonecontractingpointandTbean{a,b,c}-generalized-nonexpansivemappingfromCintoC.Weprovethattheinfimumoftheset{||x-T(x)||}onCiszero,studysomefactsconcerningthe{a,b,c}-generalized-nonexpansivemappingandprovethattheasymptoticcenterofanyboundedsequencewithrespecttoCissingleton.Dependingonthefactthatthe{a,b,0}-generalized-nonexpansivemappingfromCintoChasfixedpoints,accordingly,anotherversionoftheBrowder’sstrongconvergencetheoremformappingsisgiven.

简介：Catalyticcombustionofpropane-airmixturewasinvestigated.Platinumcatalystsoveraflatstainlesssteelwithγ-aluminawashcoatwereemployed.Theemployedburnerhasthreecatalystssetparalleltothemixtureflow,spacedatanintervalof5,10and15mm.Bothexperimentandnumericalsimulationweremadeatinlettemperatureof553K,inletvelocityof3to7m/sandequivalenceratioof0.3to0.5.Inthenumericalsimulation,two-dimensional,steadystatemodelwasdevelopedtocalculatethetemperatureandspeciesconcentrationingas-phase.Inthismodel.chemicalreactiononthecatalystsurfaceandthatinthegasphasewereassumedtooccurinthree-steps.Thenumericalresultsshowgoodagreementwithexperimentalresults.Itwasfoundthatthepropertiesofthecatalyststronglyaffectthecatalystsurfacetemperature.Especially,thethermalconductivityofcatalysthasagreateffect,whiletheemissivityofcatalysthaslesseffect.

简介：在这个工作我们在场关于借助于在与形状保存有关的假设下面的一个线性操作符的一个函数的k-th衍生物的近似的结果性质。作为后果，我们关于Meyer-K推出新结果?nig和Zeller操作员。

简介：InthispaperwegiveaconvergencetheoremfornonC^0nonconformingfiniteelementtosolvetheellipticfourthordersingularperturbationproblem.Twosuchkindofelements,anineparametertriangularelementandatwelveparameterrectangularelementbothwithdoublesetparameters,arepresented.Theconvergenceandnumericalresultsofthetwoelementsaregiven.

简介：纸的目的是估计Wasserstein测量的密度功能或分发功能公制的，统计距离的一种典型类型，它通常在统计学习被要求。基于古典伯恩斯坦近似，一个计划被介绍。得到计划的错误估计，到为单调C1功能估计伯恩斯坦近似的L1标准的问题拐弯，它是很少在古典近似理论讨论了。最后，我们由统计距离得到概率估计。

简介：

简介：

简介：Electrostaticlayer-by-layerself-assemblymultilayerfilmsweresuccessfullyfabricatedfromC60-ethylenediamineadduct(C60-EDA)andDNA.Undervisiblelightirradiation,DNAisreadytobecleavedandthefilmsaredestroyed.

简介：

简介：二新C-21steroidalglycosides，mucronatosidesM(1)和N(2)，从白前科植物mucronata的茎被孤立，和一已知的复合stephanosideM(3)。根据化学证据和广泛的分光镜的方法，包括一个维、二维的NMR，二新混合物的结构作为12-O-tigloyl-20-O-N-methylanthraniloylsarcostin3-O--D-glucopyranosyl-(14)被识别-6-deoxy-3-O-methyl--D-allopyranosyl-(14)-(-D-cymaropyranosyl-(14)--D-cymaropyranoside(1)，和12-O-cinnamoyl-20-O-nicotinoyl(20S)-pregn-6-ene-3(,5(,8,12,14(,17,20-heptanol3-O--D-glucopyranosyl-(14)-6-deoxy-3-O-methyl--D-allopyranosyl-(14)--D-cymaropy

简介：在α次积分C半群和双连续n次积分C半群的基础上,探讨了双连续α次积分C半群的扰动性,得到了双连续α次积分C半群的扰动定理,并且在局部Lipschitz连续条件下证明双连续α次积分C半群的扰动理论仍然成立.

简介：

简介：ThispaperstudiestheasymptoticpropertiesoftherandomiterationsofboththeformGn=f1of2o……ofnandtheformFn=fnofn-1o…of1,where{fn}（包含于）H(Ω，Ω)andΩ（包含于）C^Nisahoundeddomain.Itisfoundthat,undersomeconditions.GnorFntendstoapointinΩasn→∞.Someexamplesarealsogiventoshowthattheconditionsthatwehavegivencannotbedroppedingeneral,Moreover,acompletedescriptionisgivenforFnorGntotendtoapointinΩundertheconditionfn→f.

简介：在这，为解决复杂线性矩阵方程AXB=C的切开的纸，修改Hermitian和skew-Hermitian(MHSS)重复方法被介绍了。作为理论分析表演，MHSS重复方法将在某些条件下面收敛。在这个方法的每次重复与真实对称的积极明确的系数矩阵要求四个线性矩阵方程的答案，尽管原来的系数矩阵是建筑群和non-Hermitian。另外，新重复方法的最佳的参数被建议。数字结果证明那个MHSS重复方法有效、柔韧。[从作者抽象]

简介：由于C^3I系统所具有的分布特点，其功能需求描述必须考虑信息处理和通信两方面，本文从C^3I系统功能分析入手，讨论了一种Petri网建立C^3I系统功能需求的可执行描述模型的方法。

简介：用直接法合成了以锰为中心原子的过渡元素和钨的三元杂多配合物,经ICP和TG曲线确定其化学式为K5,6[MnM(OH2)W11O39]*xH2O(M＝Mn2+,Fe3+,Co2+,Ni2+,Cu2+,Zn2+和Cd2+),采用IR,UV,XRD和XPS等手段对配合物结构进行了表征,用循环伏安测定了其系列配合物的氧化还原性质,得出系列配合物的氧化性顺序,同时讨论配合物的热稳定性.

简介：Twooxo-vanadium(IV)complexes,[VO(C2O4)(2,2′-bipy)(H2O)]·C2H5OH(1)andVO(C2O4)(phen)(H2O)(2),where2,2′-bipy=2,2′-bipyridyl,phen=1,10-phenanthroline,weresynthesizedaspotentialfunctionalmodelsofvanadiumhaloperoxidases(VHPOs)inmixedsolventofethanolandwateratroomtemperature.Thecomplexeswerecharacterizedbyelementalanalysis,infrared(IR),UV-VisandX-raycrystallography.Structuralanalysesshowedthatvanadiumatomwascoordinatedbyaterminaloxygen,oneoxygenatomfromcoordinatedwater,twooxygenatomsfromthecarboxylategroupofoxalicacid,andtwonitrogenatoms(N1andN2)from2,2′-bipy/phen.Centralvanadiumatomsincomplexes1and2werebothinadistorted-octahedralenvironment,andsomeintermolecularhydrogenbondinglinkageswerealsoobservedineachcomplex.BrominationreactionactivityofthetwocomplexeswasevaluatedwithphenolredasorganicsubstrateinthepresenceofH2O2,Br-andphosphatebuffer,indicatingthattheycanbeconsideredasapotentialfunctionalmodelofVHPO.Inaddition,thermalanalysiswasalsoperformedanddiscussedindetail.

简介：合成了2种不同的钒取代Keggin型多金属氧酸盐（Na4PMo11VO40和（HGly）4PMo11VO40,以下分别简写为PMo11V和Gly-PMo11V）,并用紫外光谱和红外光谱对其进行结构表征.以这2种化合物为效应物,采用酶动力学方法研究其对酪氨酸酶二酚酶的抑制效果、抑制机理和抑制类型.结果表明：PMo11V和Gly-PMo11V对酪氨酸酶均有明显的抑制效果,其IC50分别为0.522和0.447mmol/L.其中,PMo11V对酪氨酸酶的抑制过程属可逆的竞争型抑制,抑制常数KI为2.629mmol/L,而Gly-PMo11V对酪氨酸酶的抑制属不可逆的抑制.综合比较,Gly-PMo11V对蘑菇酪氨酸酶的抑制效果优于PMo11V.

简介：利用同源模建和分子动力学模拟方法搭建了鼠源雌激素硫酸转移酶的三维结构，并用Profile-3D和Prostat评估了模型的可靠性．鼠源雌激素硫酸转移酶的三维结构的提出对硫酸转移酶家族催化机理的深入研究提供了重要的参考信息．

简介：FiveC3/C3fluoroquinolonedimerstetheredwithafusedheterocyclicringofs-triazolo[2,1-b][1,3,4]thiadiazolederivedfromantibacterialquinolonesweresynthesizedandcharacterized,andtheirinvitroantitumoractivityagainstL1210,CHOcelllineswasevaluatedviatherespectiveIC50values.