简介：Weconsideronesourceofdecoherenceforaquantumcomputercomposedofmanytrappedionsduetothethermaleffectsofthesysteminthepresenceoflaser-ioninteraction.Theupperlimitofthetemperatureatwhichthelogicalgateoperationscouldbecarriedoutreliablyisgiven,andourresultisagreementwiththeexperiment.

简介：Plantcelllinesdifferredgreatlyintheabilitytowithstandshearstresses.Usingto-baccocellsandlicoricecellsasmodelplantcells,westudiedtheeffectsofshearstressesonthevi-abilityofplantcells.OurexperimentswerecarriedoutonahighshearrateCouetterheometerprovidinghomogeneousandconstantshearstressesoflaminarflow.TheviabilitywasdeterminedbyTTC（2,3,5-Triphenyltetrazoliumchloride）.Theresultswereasfollows.（1）Theviability（V）droppedexponentiallywithtime（t）,namelyV=Exp（-kt）,（k>oisaconstant）.Thismeantthetenabilityofstatisticalhomogeneity.（2）Thevalueofkwasafunctionofplantcells’mechanicalpropertiesandtheshearstressactingontheplantcells.Theshearratecorrespondingtok=owasthecriticalshearratethattheplantcellscouldwithstand.Itcanbeeasilydetermindedbyextrapo-lation.For7-day-oldtobaccocells,itwas1090s-1andfor9-day-oldlicoricecells,itwas6566s-1.（3）Theplantcellsuspensionswerepseudoplasticfluidsfittingτ=Kγn.Forthetobaccocellsus-pensiontested,n=O.73,andforthelicoricecellsuspensiontestedn=0.7.Thusthecriticalshearstressforthetobaccocellswas25dynes/cm2andforthelicoricecellsitwas80dynes/cm2.（4）Oneoftheirreasonsforlicoricecellstohavegreatertolerancetoshearstressesthantobacaccocellsmaybethegeometricfeaturesofthecellsandthesizesofthecells.Thelicoricecellswererod-shaped,butthetobaccocellsweresphericalandlargerthanthelicoricecells.

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简介：这篇论文处理磁电机水动力学(MHD)当没有滑倒状况不再是有效的时，在多孔的媒介Oldroyd8常数液体流动。修改Darcy的法律在流动建模被使用。有非线性的边界条件的非线性的微分方程与一种反复的技术在联合用有限差别计划数字地被解决。数字结果为Couette，Poiseuille和概括Couette流动被获得。效果在速度侧面上滑动参数被讨论。

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简介：HDAC和帽子是哪个的二种酶catalysedeacetylation和在优核质的histone的acetylation，其动态平衡在DNA为基因抄写和优核质的基因表示有精确规定水平。他们的Disbalance能在正常房间带增长和区别的混乱，然后导致肿瘤的开始。他们的异常功能是直接与各种各样的肿瘤的开始和前进有关例如promyelocytic白血病，Hodgkin淋巴瘤，结肠的癌症和gastral癌症。HDAC的禁止者被用于肿瘤的治疗。他们能制止HDAC的活动并且堵住deacetylation的混乱引起的基因表示的抑制。它的主要生物效果在导致肿瘤房间的区别躺着，逮捕在G0/G1的房间圆，激活房间apoptosis基因，提高化学治疗和放射性的治疗的敏感。到目前为止HDAC是在anticancer药research.Cellular与分子的免疫学的重要目标酶。2006；3(4):285-290。

简介：ＥｆｆｅｃｔｓｏｎＳｕｍａｎｄＤｉｆｆｅｒｅｎｃｅＰａｔｔｅｒｎｓｂｙＡｄａｐｔｉｖｅＮｕｌｌＸｉｅＬｉａｎｇｇｕｉａｎｄＪｉａｎｇＸｉｎｆａ（ＢｅｉｊｉｎｇＩｎｓｔｉｔｕｔｅｏｆＲａｄｉｏＭｅａｓｕｒｅｍｅｎｔ，Ｐ．Ｏ．Ｂｏｘ３９２３，Ｂｅｉｊｉｎ...

简介：Itisnotunusualforthelevelofamonthlyeconomictimeseries,suchasindustrialproduction,retailandwholesalesales,monetaryaggregates,telephonecallsorroadaccidents,tobeinfluencedbycalendareffects.Sucheffectsarisewhenchangesoccurinthelevelofactivityresultingfromdifferencesinthecompositionofcalendarbetweenyears.Thetwomainsourcesofcalendareffectsaretradingdayvariationsandmovingfestivals.Ignoringsuchcalendareffectswillleadtosubstantialdistortionsintheidentificationstageoftimeseriesmodeling.Therefore,itismandatorytointroducecalendareffects,whentheyarepresentinatimeseries,asthecomponentofthemodelwhichonewantstoestimate.

简介：Fromaneconomicangle,thispaperanalyzesanddemonstratestheirrationalityofthecurrentInternetsettlementofInterconnection;thenpointsoutthattheheavychargesforInternetinterconnectionfromdevelopingcountriestothedevelopedcountrycanbethoughtofasoneofthemainandkeyreasonsthatrestrictthebalanceddevelopmentoftheInternetintheworld,whichcausestheintensificationof'digitaldivide',widensthegapbetweenpoorandrichcountriesandfurtheraggravatesthedisequilibriumoftheglobaleconomicdevelopment;andthustheconclusionisreached:thepublicpolicyselectionshouldbemadebythewholeinternationalsocietyjointlyforpayingcloseattentionandregulatingsettlementsystemsofInternetinterconnectiontodwindle'digitaldivide'throughouttheworld.

简介：Prorocentrummicans包括f/2，f/4，f/8，f/20，f/25，f/50，f/100和f/200在不同媒介被栽培。结果证明媒介影响P的生长。P的micans.The生物资源。在富有的营养媒介的micans比在差的营养媒介高得多。氮的氧化物能支持或禁止P的生长。在所有媒介的micans。在1.4x10~的集中的氮的氧化物(-6)摩尔L~(-1)支持了P的生长。micans显著地当在耕作期间增加了仅仅一次时。当一天增加了两次时，在1.4x10~的集中的氮的氧化物(-9)摩尔L~(-1)支持了P的生长。micans显著地，当时在1.4x10~的集中的氮的氧化物(-5)摩尔L~(-1)和1.4x10~(-6)摩尔L~(-1)禁止了生长。因此，增加氮的氧化物的氮的氧化物，媒介和方法影响了P的生长。micansrespectively。

简介：目的：观察针刺治疗失眠症的疗效。方法：将96例失眠症患者按就诊顺序分成2组，治疗组51例，采用针刺治疗；对照组45例，口服艾司唑仑片治疗。治疗2星期后，进行疗效比较。结果：治疗组总有效率为94．1％，对照组总有效率77．7％，两组总有效率差异有统计学意义（P〈0．01）。结论：针刺治疗失眠症疗效优于口服艾司唑仑片。

简介：Arecentreportintroducedthephosphodiesterase-5inhibitionbyvardenafilasanoveltreatmentofportalhypertensioninpatientswithcirrhosis.Inthehereinpresented'lettertotheeditor',theadministrationoftadalafildidnotinfluenceportalhaemodynamicsbutimpairedsystemichaemodynamicsinpatientswithcirrhosis.OurobservationsconcurwiththeresultsofareportinapreviousissueofWorldJournalofGastroenterology(October2008).Moreover,tadalafiladverselyaffectedrenalfunctioninpatientswithdecompensatedliverdisease.

简介：AdoublehelixmodelofchargetransportinDNAmoleculeisgivenandthetransmissionspectraoffourDNAsequencesareobtained.ThecalculatedresultsshowthatthetransmissioncharacteristicsofDNAarenotonlyrelatedtothelongitudinaltransportbutalsotothetransversetransportofmolecule.Theperiodicsequencewiththesamecompositionhasstrongerconductionability.Withtheincreasingofbasescomposition,theconductiveabilityreduces,buttheweightofθdirectionrisesinchargetransfer.

简介：Atwo-dimensional,semi-geostrophicnumericalmodelincorporatingthetropopauseandstratosphereisusedtoinvestigatetheeffectsofapositivepotentialvorticityanomalyandlatentheatreleaseonthefrontogeneticprocessandthestructureoftheresultingfrontalzone.Itisdemonstratedthat(1)theinclusionoftropopauseandstratospheresignificantlychangesthefrontalstructureonlyintheupperlevels;(2)aclearlydefinedquasi-equivalentbarotropicstructureandaregionofupwardmotionoffinitewidthappearwhenapositivepotentialvorticityanomalyexistsonthewarmsideofthemaximumbaroclinityinthelowertroposphere,especiallywhenitislocatedonthesouthedgeofthebarocliniczone;(3)theabovementionedstructuredeterioratesasthefrontogenesisproceedsinadryatmospherebutcanbemaintainedinamoistfrontogeneticprocesswithcondensationalheating;(4)thecombinationofapositivepotentialvorticityanomalyandthelatentheatreleaseisabletoacceleratethefrontogenesissignificantlywiththetimeneededtoformanintensefrontalzonereducedtolessthan15h.Theresultshavesignificanttheoreticalimportanceinunderstandingthecomplexnatureoffrontalstructureandfrontogenesis,especiallyinunderstandingthedynamicstructureofthesubtropicalfrontalzoneobservedduringearlysummeroverEastAsia.

简介：Thisstudyinvestigatesthemicrostructuresofmicroalloyedsteelsbeforeandafterstrainageingtreatment.Itwasfoundthatthemicrostructureconsistedofbothlathferriteandpearlite.Mostofthecarbidesand/ornitridesofmicroalloyingelementsweredistributedinsidethegrainswithasmallamountdistributedatthegrainboundaries.Theprecipitatedphasesinsidethegrainsweremuchsmallerinsizethanthoseatthegrainboundaries.Theprecipitatesareeithercircularorshortbar-like,ofsizesfromafewnanometerstoseveralhundrednanometers.Afterageing,onlycarbonatomssegregatearoundthedislocationsandnitrogendoesnotparticipateinproducingtheCottrellatmospherebecauseitwasfixedbyalloyingelementsbeforeageing.

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简介：Objective:tostudytheclinicalinfluenceoffemoralqualityoncementlesshipreplacementandtoevaluatecorticalindex(CI)forfemoralqualityinordertoguideprosthesischoiceandrehabilitation.Methods:forth-ninecasesofcementlesshipreplacementwerefollowedupforaverage3.5years,42ofwhonhadX-rayfilmsonpreoperationoroperationday.Results:Harrisscoresandpatients'satisfactionwerelowbutpainwassignificantandprolongedwhencorticalindiceswerelow.Conclusions:CIisareliablesemi-quantityparameterforclinicalevaluationoffemoralquality.Osteoporosispatientspredisposetothighpain.Lagforfull-weightloadingandavoidancefortorsionmotioncancontributetolesspainwhenCI≤2.2.

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