简介：利用角分辨紫外光电子谱对乙烯和乙炔气体在Ru(1010)表面的吸附及与K的共吸附的研究结果表明：当衬底温度超过200K，乙烯即发生脱氢反应，σCH和σCC能级均向高结合能方向移动。在室温下，σCH和σCC能级位置与乙炔在Ru(1010）表面的吸附时的分子能级完全一致。乙烯发生脱氢反应后的主要产物为乙炔。衬底温度从120K到室温，Ru(1010）表面上乙炔的σCH和σCC能级均未发现变化。室温下乙炔仍然可以在Ru(1010）表面以分子状态稳定吸附。在有K的Ru(1010）表面上，室温时σCC谱峰几乎。碱金属K的存在促进了乙炔的分解。
简介：Theroleofpulseparametersonnanoparticlepropertyisinvestigatedself-consistentlybasedonacoupleoffluidmodelandaerosoldynamicsmodelinacapacitivelycoupledparallel-plateacetylene(C2H2)discharge.Inthismodel,themasscontinuityequation,momentumbalanceequation,andenergybalanceequationforneutralgasaretakenintoaccount.Thus,thethermophoreticforceariseswhenagastemperaturegradientexists.Thetypicalresultsofthismodelarepositiveandnegativeiondensities,electronimpactcollisionsrates,nanoparticledensity,andchargedistributions.Thesimulationisperformedfordutyratio0.4/0.7/1.0,aswellaspulsemodulationfrequencyfrom40kHzto2.7MHzforpureC2H2dischargesatapressureof500mTorr.Wefindthatthepulseparameters,especiallythedutyratio,haveagreataffectonthedissociativeattachmentcoefficientandthenegativedensity.Moreimportantly,bydecreasingthedutyratio,nanoparticlesstarttodiffusetothewall.Undertheactionofgasflow,nanoparticledensitypeakiscreatedinfrontofthepulseelectrode,wherethegastemperatureissmaller.
简介：在染色体为特定的DNA目标设计锌手指蛋白质主题在染色体工程的领域里是批评的。我们为为绑在特定的目标DNA地点的C2H2锌手指预言识别helices开发了一个计算方法。这预言用锌手指蛋白质和他们的目标DNA三位字节的彻底的数据集基于人工的神经网络。用户们能为也要预言在的二或三根锌手指选择选择一模块化或为输入DNA顺序的synergistic时尚。这个方法将为对为几个生物、生物医学的应用程序设计特定的锌手指抄写因素和锌手指核酸酶感兴趣的研究人员是珍贵的。网工具ZiF预言在http://web.iitd.ac.in/sundar/zifpredict/在网上是可得到的。
简介：本文报道了Ｃ６Ｈ１２Ｏ６（ＮＨ４）２ＳＯ４Ｃ２Ｈ５ＯＨＨ２Ｏ（Ｃ２Ｈ５ＯＨ／Ｈ２Ｏ＝０．９０）体系在３５℃时体系溶解度和饱和溶液的折光指数，并绘出了体系相应的溶度图和饱和溶液的折光指数曲线图。结果表明：所研究的体系为四元体系Ｃ６Ｈ１２Ｏ６（ＮＨ４）２ＳＯ４Ｃ２Ｈ５ＯＨＨ２Ｏ中的一部分。当溶液中肌醇饱和时，溶度曲线落在约５０％的等醇水比面上。当（ＮＨ４）２ＳＯ４在溶液中达到饱和时，出现共饱点。其组成为（ＮＨ４）２ＳＯ４：２１０％，Ｃ６Ｈ１２Ｏ６：２．０８％，Ｃ２Ｈ５ＯＨ：４４７５％。同时出现分层，在富醇相随着乙醇浓度的增加，出现肌醇与硫酸铵共饱线。在富水相硫酸铵饱和溶度曲线落在约５％乙醇的等醇水比面上，折光指数曲线由三支组成，其中两条分别与Ｃ６Ｈ１２Ｏ６·Ｈ２Ｏ和（ＮＨ４）２ＳＯ４相对应，另外一条线与（ＮＨ４）２ＳＯ４和Ｃ６Ｈ１２Ｏ６·Ｈ２Ｏ的共饱线相对应
简介：BackgroundTaxifolin(Tax)isanessentialnaturalantioxidant.MultiplestudieshaveshownthatTaxcanprotectcardiomyocytesfromischemia-reperfusioninjury.However,theunderlyingmechanismisstillunclear.MethodsH9C2cellswererandomlydividedintocontrol,H_2O_2group,Taxpretreatmentgroup(Tax+H_2O_2);Taxeffectgroup.CellactivitywasdetectedbyCCK-8andtheintracellularstructurewasobservedbytransmissionelectronmicroscopy.AutophagywasdeterminebyWesternblottinganalysisofBeclin-1,Bcl-2andPKC.ResultsTaxpretreatmentsignificantlyincreasedanti-apoptoticproteinBcl-2andautophagyproteinBeclin-1.ExpressionofPKCwasinhibitedbyTax.ConclusionsTaxpretreatmentcouldprotectH9C2cellsagainstH_2O_2-induceddamagethroughtheBcl-2andautophagypathways.
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：Thispaperreportstwolanthanidecomplexesofformula（C9H7）Ln（C8H8）·（THF）2whereLnisProrNd,C9H7isindenyl,andC8H8iscyclooctatetraene（COT）.ThecomplexeswerepreparedbythereactionofLnCl3withK（C9H7）andK2（C8H8）inTHF.（C9H7）Pr（C8H8）·（THF）2crystallizesinTHFat-15℃inthemonoclinicspacegroupP21:withunitcelldimensionsa=8.446（0）,b=10.083（2）,c=13.407（3）,β=105.48（1）°,V=1100.43（35）3,Dc=1.52g/cm3andZ=2.ThefinalRvalueis0.033,Rwvalueis0.030,respectively.In（C9H7）Pr（C8H8）·（THF）2afive-memberedringcentroidofC9H7,theC8H8ringcentroidandthetwooxygenatomsfromthetwoTHFmoleculesformadistortedtetrahedralgeometryaroundthemetal.
简介：用organo听Sn(OC4H9)4作为先锋，钠dodecylsulfonate(SDS)和SDS明胶(SDS-G)象模板复杂，二听二氧化物胶体的粒子被准备由一自己组装方法。两个SnO2产品分别地与SDS-G与SDS和SnO2-C粒子被标记SnO2-B粒子，它在制作相应于SnO2-B和SnO2-C传感器的SnO2煤气的传感器被使用。X光检查衍射(XRD)，扫描电子显微镜学(SEM)，传播电子显微镜学(TEM)和thermogravimetry和不同热分析(TG/DTA)被用于描述。试验性的结果证明SnO2-B胶体的粒子由mesoporous组成像片的粒子，当SnO2-C粒子主要由球形的粒子组成时。煤气的察觉到大小证明那个SnO2-B传感器执行察觉到反应到所有目标气体的最好，包括H2，C2H5OH和液体石油气体(LPG)。特别地，SnO2-B传感器的察觉到的反应在1000潩獮的集中在H2空气在32点被完成
简介：合成了一个新的配合物,经元素分析及X-射线衍射对其结构进行了表征.化合物晶体属单斜晶系,P2（1）/c空间群,晶胞参数：a=6.4824（13）,b=6.1325（12）,c=19.980（4）,α=90°,β=91.925（2）°,γ=90°,V=793.8（3）A3,M=245.05,Z=4,Dc=2.050Mg.m-3,F（000）=492,吸收系数μ=1.671mm-1,最终偏离因子R1=0.0263,wR2=0.0692.化合物的分子结构存在一维链状的结构,由于复杂氢键的存在,它的堆积结构呈二维网状排列,而且在[010]方向看到了纳米空洞.
简介：Sodiumparanitrophenolatedihydrate(NPNa·2H2O)isanexcellentsemiorganicnonlinearoptical(NLO)material,crystallizesbothinwaterandmethanolwithhighdegreeoftransparency.Goodopticalqualitysinglecrystalsofdimensionupto18mmx6mmx3mmareobtainedbyisothermalsolventevaporationtechnique.Thesolubilityofthecrystalindifferentsolventswasmeasuredgravimetrically.ThesinglecrystalsofNPNa·2H2Oshowvariationinphysicalpropertiesandgrowthrateindifferentsolvents.Methanolorethanolsolutionyieldscrystalsofbipyramidalshapewithclearmorphology.However,methanolgrowncrystalisexhibitingimprovedhardnessparametersandpossessesexcellentthermalstabilityascomparedtowatergrowncrystals.TheeffectsofsolventonhardnessparameteralongwiththermalandopticalpropertiesofNPNa·2H2Owasrevealedinthispaper.
简介：Thecrystalandmolecularstructuresof[(C3H7O)2PS2]2(CCDCNo.217201)weredeterminedbymeansofX-raycrystallography.ItcrystallizedinatriclinicsystemwithspacegroupP1^-andlatticeparametersa=0.82794(3)nm,b=0.84764(2)nm,c=0.85034(3)nm,α=97.78(3)°β=110.77(3)°,γ=94.95(3)°,V=0.54701(9)nm^3,Z=1.Inthismolecule,thetwodiisopropyldithiophosphategroups,[(C3H7O)2PS2]2,whichareparalleltoeachother,arelinkedbyanS--Sbondandthereexistinversioncentersinthemolecule,Inthestructure,theP=Sbondsinthetwodithiophosphateunitsaretrans-orientedtoeachother.
简介：Halfsandwichirondicarbonylcomplex[η5-C5H3(t-Bu)2]Fe(CO)2Cl(1)reactswith1,2-dilithiumdiselenocarboraneLi2Se2C2B10H10(2)togiveabinuclearironcarboranecomplex[η5-C5H3(t-Bu)2]2Fe2(CO)3*Se2C2B10H10(3).TheX-raydiffractionanalysisofcomplex3revealsthatoneoftheironatomsischiral.
简介：目的：观察外源给予H2O2对C2C12细胞中UII/UT系统表达的影响。方法：培养小鼠肌原细胞系C2C12细胞株,应用胎盘蓝染色和测定细胞培养液中LDH的含量检测H2O2对细胞损伤的影响,应用放射免疫的方法检测细胞培养液和裂解液中UII的含量,应用RT-PCR法测定C2C12中UTmRNA的表达,应用WesternBlot检测不同浓度H2O2对肌原细胞系C2C12中UT蛋白表达的影响。结果：外源给予不同浓度的H2O2,C2C12细胞裂解液中UII的含量各组间无明显差异,但增加了细胞孵育液中UII的含量,10-4M和10-3M时分别增加了83.1%（p〈0.01）和94.5%（P〈0.01）。低浓度H2O2（0.5×10-6M,10-6M,10-5M,10-4M）刺激明显增加了UTmRNA的表达,而高浓度的H2O2（10-3M）刺激反而使UTmRNA的表达降低。高浓度的H2O2（10-6M,10-5M,10-4M,10-3M）刺激使UT蛋白表达分别增加了200.1%、255.6%、111.1%和100.1%（均p〈0.05）。结论：H2O2作为T2DM发病因素之一的活性氧族,可能是T2DM时骨骼肌组织中UII/UT系统表达增加的一个因素。
简介：Themononuclearcomplex,[NtCl2(trzCHzCHzCOPh)4]·6H2O(trz=1,2,4-triazole),wassynthesizedanditsstructurewasdeterminedbysinglecrystalX-raydetermination.Itcrystallizesinthemonoclinicsystem,spacegroupP21/c,withlatticepa-rameters:a=0.80391(2)nm,b=1.06215(2)nm,c=2.90133(2)nm,β=94.792(1)°andZ=2.EachnickelatomiscoordinatedbyfourNatomsoftriazolefromfourβ-(1,2,4-IriHole-1-yl)propiophenoneligandsandtwochlorideanionsinarrangementwithoctahedralcoordinationgeometry.Inadditiontothecoordinatingnickelcomplex,therearesixunco-ordinatedwatermolecules.TheNi—Ndistanceis0.24865(8)nmandtheNi—Ndistaneesareintherangeof0.2072(2)to0.2099(2)nm,respectively.Inthesolidstate,theUtiecom-poundformsthreedimensionalnetworkstructurethroughhy-drogenbonds.Theintermolecularhydrogenbondsconnectthe[NiCl2(C2H2N3CH2CH2COPh)4]andH2Omoieties.Thedeepgreencrystalswerealsoexaminedbyelementalanalysis,FT-IRandUVspectra,whichareinagreementwiththestructuralda-ta.
简介：目的探讨橙皮素（HES）对H2O2诱导的H9c2心肌细胞凋亡的影响.方法采用H2O2建立H9c2心肌细胞氧化应激损伤模型.实验分为4组：正常对照组（Control组）、H2O2损伤组（H2O2组）、单纯橙皮素处理组（HES组）、橙皮素预处理＋H2O2组（HES＋H2O2组）.H2O2（400μM）处理2h建立心肌细胞氧化应激损伤模型,HES＋H2O2组于建模前1h加入40μM橙皮素.采用CCK-8法确定H9c2细胞活性,DCFH-DA探针检测细胞活性氧簇（ROS）水平,流式细胞术检测心肌细胞凋亡,分光光度计检测Caspase-3活性.结果橙皮素预处理可明显改善H2O2诱导的H9c2心肌细胞活性降低,且浓度为40μM时保护作用最明显;给予40μM橙皮素预处理后ROS的产生明显减少,Caspase-3活性显著下降,心肌细胞凋亡率为（28.32±2.12）%,明显低于H2O2组（50.33±2.56）%（P〈0.05）.结论橙皮素对氧化应激诱导的心肌细胞凋亡具有抑制效应.
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![Crystal Structure and Bioactivity of Complex [Gd（<b style='color:red'>C</b>10<b style='color:red'>H</b>9N<b style='color:red'>2</b>O4）（<b style='color:red'>C</b>10<b style='color:red'>H</b>8N<b style='color:red'>2</b>O4）（<b style='color:red'>H</b><b style='color:red'>2</b>O）3]<b style='color:red'>2</b>·phen·4<b style='color:red'>H</b><b style='color:red'>2</b>O](/image/thesis8 "Crystal Structure and Bioactivity of Complex [Gd（<b style='color:red'>C</b>10<b style='color:red'>H</b>9N<b style='color:red'>2</b>O4）（<b style='color:red'>C</b>10<b style='color:red'>H</b>8N<b style='color:red'>2</b>O4）（<b style='color:red'>H</b><b style='color:red'>2</b>O）3]<b style='color:red'>2</b>·phen·4<b style='color:red'>H</b><b style='color:red'>2</b>O")
![Vanadium Haloperoxidases Model Compounds： Synthesis, Structural Characterization and Mimic Catalytic Bromination Activity of [VO（<b style='color:red'>C</b>_<b style='color:red'>2</b>O_4）（<b style='color:red'>2</b>,<b style='color:red'>2</b>′-bipy）（<b style='color:red'>H</b>_<b style='color:red'>2</b>O）]·<b style='color:red'>C</b>_<b style='color:red'>2</b><b style='color:red'>H</b>_5OH and VO（<b style='color:red'>C</b>_<b style='color:red'>2</b>O_4）（phen）（<b style='color:red'>H</b>_<b style='color:red'>2</b>O）](/image/thesis9 "Vanadium Haloperoxidases Model Compounds： Synthesis, Structural Characterization and Mimic Catalytic Bromination Activity of [VO（<b style='color:red'>C</b>_<b style='color:red'>2</b>O_4）（<b style='color:red'>2</b>,<b style='color:red'>2</b>′-bipy）（<b style='color:red'>H</b>_<b style='color:red'>2</b>O）]·<b style='color:red'>C</b>_<b style='color:red'>2</b><b style='color:red'>H</b>_5OH and VO（<b style='color:red'>C</b>_<b style='color:red'>2</b>O_4）（phen）（<b style='color:red'>H</b>_<b style='color:red'>2</b>O）")
![配合物[Mn（<b style='color:red'>C</b>_5<b style='color:red'>H</b>_<b style='color:red'>2</b>N_<b style='color:red'>2</b>O_6）·<b style='color:red'>2</b><b style='color:red'>H</b>_<b style='color:red'>2</b>O]_n的合成、晶体结构及光谱性质](/image/thesis13 "配合物[Mn（<b style='color:red'>C</b>_5<b style='color:red'>H</b>_<b style='color:red'>2</b>N_<b style='color:red'>2</b>O_6）·<b style='color:red'>2</b><b style='color:red'>H</b>_<b style='color:red'>2</b>O]_n的合成、晶体结构及光谱性质")
![Crystal Structure of Bis （0, O＇-diisopropyl dithiophosphate） ： [（<b style='color:red'>C</b>3<b style='color:red'>H</b>7O）<b style='color:red'>2</b>PS<b style='color:red'>2</b>]<b style='color:red'>2</b>](/image/thesis15 "Crystal Structure of Bis （0, O＇-diisopropyl dithiophosphate） ： [（<b style='color:red'>C</b>3<b style='color:red'>H</b>7O）<b style='color:red'>2</b>PS<b style='color:red'>2</b>]<b style='color:red'>2</b>")
![Synthesis, Structure and Characterization of a Novel Asymmetrical Half-sandwich Binuclear Iron Carborane Complex [η5-<b style='color:red'>C</b>5<b style='color:red'>H</b>3(t-Bu)<b style='color:red'>2</b>]<b style='color:red'>2</b>Fe<b style='color:red'>2</b>(CO)3Se<b style='color:red'>2</b><b style='color:red'>C</b><b style='color:red'>2</b>B10<b style='color:red'>H</b>10](/image/thesis16 "Synthesis, Structure and Characterization of a Novel Asymmetrical Half-sandwich Binuclear Iron Carborane Complex [η5-<b style='color:red'>C</b>5<b style='color:red'>H</b>3(t-Bu)<b style='color:red'>2</b>]<b style='color:red'>2</b>Fe<b style='color:red'>2</b>(CO)3Se<b style='color:red'>2</b><b style='color:red'>C</b><b style='color:red'>2</b>B10<b style='color:red'>H</b>10")
![Structure of Tetra[β-（1,<b style='color:red'>2</b>,4-triazole-l-yl） propiophenone ] Dichloro NiCkel（Ⅱ） Solvate Hexahydrate Complex：[NiCl<b style='color:red'>2</b> （ <b style='color:red'>C</b><b style='color:red'>2</b><b style='color:red'>H</b><b style='color:red'>2</b>N3CH<b style='color:red'>2</b>CH<b style='color:red'>2</b>-COPh） 4 ]·6<b style='color:red'>H</b><b style='color:red'>2</b>O](/image/thesis18 "Structure of Tetra[β-（1,<b style='color:red'>2</b>,4-triazole-l-yl） propiophenone ] Dichloro NiCkel（Ⅱ） Solvate Hexahydrate Complex：[NiCl<b style='color:red'>2</b> （ <b style='color:red'>C</b><b style='color:red'>2</b><b style='color:red'>H</b><b style='color:red'>2</b>N3CH<b style='color:red'>2</b>CH<b style='color:red'>2</b>-COPh） 4 ]·6<b style='color:red'>H</b><b style='color:red'>2</b>O")
