简介：StabilizedorChebyshevexplicitmethodshavebeenwidelyusedinthepasttosolvestiffordinarydifferentialequations.MakinguseofspecialpropertiesofChebyshev-likepolynomials,thesemethodshavefavorablestabilitypropertiescomparedtostandardexplicitmethodswhileremainingexplicit.Anewclassofsuchmethods,calledROCK,introducedin[Numer.Math.,90,1-18,2001]hasrecentlybeenextendedtostiffstochasticdifferentialequationsunderthenameS-ROCK[C.R.Acad.Sci.Paris,345(10),2007andCommun.Math.Sci,6(4),2008].InthispaperwediscusstheextensionoftheS-ROCKmethodstosystemswithdiscretenoiseandproposeanewclassofmethodsforsuchproblems,theT-ROCKmethods.Onemotivationforsuchmethodsisthesimulationofmulti-scaleorstiffchemicalkineticsystemsandsuchsystemsarethefocusofthispaper,butournewmethodscouldpotentiallybeinterestingforotherstiffsystemswithdiscretenoise.TwoversionsoftheT-ROCKmethodsarediscussedandtheirstabilitybehaviorisanalyzedonatestproblem.ComparedtotheT-leapingmethod,asignificantspeed-upcanbeachievedforsomestiffkineticsystems.Thebehavioroftheproposedmethodsaretestedonseveralnumericalexperiments.

简介：Ltmedisease(Lymeborreliosis)iscausedbythetick-bornespiro-elraeteBorreliaburgdooCeri.Erythemamigrans,anearlyskinlesion,isthemostcommonclinicalpresentation.Theorganismmayspread,causingvariouslatermanifestations.

简介：春季是传染性疾病的高发时段，预防工作一定要做到及时、有效。也许从下面的短文中我们可以得到一些启示！

简介：《72米》是关于处在危急关头的人们怎样展现出他们优秀品质的故事。它教育人们，当道德选择显得尤为重要的时刻应该何去何从。

简介：Inthispaper,standardandeconomicalcascadicmultigridmethodsareconsideredforsolvingthealgebraicsystemsresultingfromthemortarfiniteelementmethods.Bothcascadicmultigridmethodsdonotneedfullellipticregularity,sotheycanbeusedtotacklemoregeneralellipticproblems.Numericalexperimentsarereportedtosupportourtheory.

简介：付春敏老师向我们推荐了这篇罗德尼·马丁有关教师在培养学生写作结构中促进思维能力发展的文章。在文中我们可以看到,以英文为母语的西方,教师更加着力于对学生的构思结构"大局"观的思维培养。文中对培养学生写作结构思维能力的剖析,望能对老师们的教育教学有所启示。

简介：BioscienceMethods(ISSN1925-1920)isanopenaccess,peerreviewedjournalpublishedonlinebyBioPublisher.Thejournalpublishesallthelatestandoutstandingresearcharticles,lettersandreviewsinallareasofbioscience,therangeoftopicsincluding(butarenotlimitedto)technologyreview,techniqueknow-how,labtool,statisticalsoftwareandknown

简介：BioscienceMethods(ISSN1925-1920)isanopenaccess,peerreviewedjournalpublishedonlinebyBioPublisher.Thejournalpublishesallthelatestandoutstandingresearcharticles,lettersandreviewsinallareasofbioscience,therangeoftopicsincluding(butarenotlimitedto)technologyreview,techniqueknow-how,labtool,statisticalsoftwareandknown

简介：BioscienceMethods(ISSN1925-1920)isanopenaccess,peerreviewedjournalpublishedonlinebyBioPublisher.Thejournalpublishesallthelatestandoutstandingresearcharticles,lettersandreviewsinallareasofbioscience,therangeoftopicsincluding(butarenotlimitedto)technologyreview,techniqueknow-how,labtool,statisticalsoftwareandknowntechnologymodification.Casestudiesontechnologiesforgenediscoveryandfunction

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简介：LastWednesday,AgricultureSecretaryAnnVenemanannouncedthefirstcaseofmadcowdiseaseintheUnitedStates.Atestseemedtoshowbovinespongiformencephalopathy,orB-S-E.inacowfromWashingtonstate.Thenextday,alaboratoryinWaybridge,England,Confirmed(证实）thecase。

简介：印射响应许多ligands和房间刺激涉及大量的细胞的小径和功能的家族asestransduce信号。MAPK的异常或不恰当的功能现在在从癌症到煽动性的疾病到肥胖和糖尿病的疾病被识别了。在许多房间类型，MAPKERK1/2被连接到细胞增殖。因为在地岬和B-Raf的变化，能激活ERK1/2串联，在许多人的肿瘤被发现，ERK1/2被认为在一些癌症起一个作用。发信号的反常ERK1/2也在polycystic肾疾病被发现了，并且象cardio-facio-cutaneous症候群那样的严肃的发展混乱在ERK1/2串联的部件从变化产生。ERK1/2在区分得好的房间是必要的并且在神经原并且在上皮的极性的维护被连接了到长期的potentiation。另外，ERK1/2为在胰腺的贝它房间的胰岛素基因抄写是重要的，它响应传播葡萄糖的增加生产胰岛素在有机体允许有效葡萄糖利用和存储。导致或镇压的营养素和荷尔蒙胰岛素分泌物以在贝它房间上反映能分泌的需求的一种方式激活或禁止ERK1/2。在这和另外的规章的小径的骚乱可以导致对某些人的混乱的病原学的ERK1/2的贡献。

简介：Asthmadevelopsinaboutoneadultperthousandpopulationperyear,andepidemiologicalstudiesindicatethatabout10%ofcasescanbeattributedtoexposuresatwork.However,occupationalasthmaisidentifiedlesscommonlythanthisinclinicalpractice;anincidenceof800-1000casesperyearisestimatedbytheUKSurveillanceofWork-RelatedandOccupationalRespiratoryDiseasescheme.Occupationalasthmaiseasilymissedbecause,apartfromitsassociationwithwork,

简介：HeartdiseaseistheleadingkillerofAmericans.Butitkillsmorewomenthanmen.TheAmericanHeartAssociationsaysheartdiseaseandothercardiovascular(心血管的)disorderskillaboutfivehundredthousandwomenayear.Thatismorethanthenextsevencausesofdeathcombined.

简介：即使身处幽界,我仍然在那里注视着你快乐成长。

简介：大家喜欢玩填数字闯关游戏吗？这里专门为你设计了一组趣味填数游戏。来试试吗？需要细心与耐心，更需要勇气及技巧哦。如果一通乱试，会用去你很多精力与时间的，做到有序思考，是数学上的一大技巧。

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简介：CascadicmultigridtechniqueformortarWilsonfiniteelementmethodofhomogeneousboundaryvalueplanarlinearelasticityisdescribedandanalyzed.FirstthemortarWilsonfiniteelementmethodforplanarlinearelasticitywillbeanalyzed,andtheerrorestimateunderL2andH1normisoptimal.Thenacascadicmultigridmethodforthemortarfiniteelementdiscreteproblemisdescribed.Suitablegridtrans-feroperatorandsmootheraredevelopedwhichleadtoanoptimalcascadicmultigridmethod.Finally,thecomputationalresultsarepresented.