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145 个结果
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  • 简介:Objective:ToexploretherelationshipbetweenquantitativeTreponemapallidumDNA(TP-DNA)PCRtestingandtheToludineRedUnheatedSerumTest(TRUST)inpatientswithsyphilisbeforeandaftertreatment,andevaluatetheclinicalvalueofquantitativeTP-DNAtestinginthediagnosisandtreatmentevaluationofsyphilis.Methods:29patientswithprimary(12cases)orsecondary(17cases)syphilis,whometthecriteriasetforthisstudywererecruitedassubjects.Allpatientsweretreatedwith2.4millionunitsbenzathinepenicillinIMweeklyfor3weeks.QuantitativetestsofTP-DNAinthepatients'plasmawereperformedusingFQ-PCRbeforeandafterthetreatment.SerologictestsincludingTRUSTandTPPAwerealsoperformed.Results:Beforethetreatment,9outof12primarysyphilispatients(75%)andallsecondarysyphilispatients(17/17)testedpositiveforTreponemapallidum(TP)byTP-DNAtesting.TheaveragequantitativetestvaluesofTP-DNAinprimaryandsecondarysyphilispatientswere(3.38±2.34)×10^4and(5.73±1.33)×10^6copies/ml,respectively.Afterthreemonthsoftreatment,1ofthe9primaryand5outof17secondarysyphilispatientswerepositiveuponTP-DNAtesting,respectively.TheaveragequantitiesofTP-DNAwere2.01×10^2copies/mlinprimaryand5.87×10^2copies/mlinsecondarysyphilispatientswithpositiveTRUSTandTP-DNAtests,and3.09×10^2copies/mlforthosewithnegativeTRUST,respectively.Afterninemonthsoftreatment,alltheprimaryandsecondarysyphilispatientswerenegativeuponTP-DNAtesting,whileallprimaryand14of17(82.35%)secondarysyphilispatientsshowednegativeTRUSTresults.Conclusion:ThattheresultsofTP-DNAtestsarenotconsistentwiththoseofTRUSTbeforeandaftertreatmentindicatesthatquantitativeTP-DNAtestingmayhavevaluableclinicalsignificanceintheearlydiagnosisandevaluationoftreatmentregimensforsyphilis.

  • 标签: TP-DNA 梅毒 疾病治疗 性传播疾病 血清检测 病例分析
  • 简介:Seeddormancycontributesresistancetopre-harvestsprouting.Effectsonrespectivequantitativetraitloci(QTLs)fordormancyshouldbeassessedbyusingfreshseedsbeforegerminabilityalteredthroughstorage.WeinvestigatedQTLsrelatedtoseeddormancyusingbackcrossinbredlinesderivedfromacrossbetweenNipponbareandKasalath.FourputativeQTLsforseeddormancyweredetectedimmediatelyafterharvestusingcompositeintervalmapping.TheseputativeQTLsweremappednearC1488onchromosome3(qSD-3.1),R2171onchromosome6(qSD-6.1),R1245onchromosome7(qSD-7.1)andC488onchromosome10(qSD-10.1).KasalathallelespromoteddormancyforqSD-3.1,qSD-6.1andqSD-7.1,andtherespectiveproportionsofphenotypicvariationexplainedbyeachQTLwere12.9%,9.3%and8.1%.Weevaluatedtheseeddormancyharvestedatdifferentripeningstagesduringseeddevelopmentusingchromosomesegmentsubstitutionlines(CSSLs)toconfirmgeneeffects.ThegerminationratesofCSSL27andCSSL28substitutedwiththeregionincludingqSD-6.1weresignificantlylowerthanthoseofNipponbareandotherCSSLsatthelateripeningstage.Therefore,qSD-6.1isconsideredthemosteffectivenovelQTLforpre-harvestsproutingresistanceamongtheQTLsdetectedinthisstudy.

  • 标签: 种子休眠 QTL 染色体片段置换系 数量性状基因座 成熟期 3号染色体
  • 简介:这研究使用了2D在Huizhou亚盆调查差错的新生代进化的地震侧面。它试图通过描述分析他们的活动的差错和份量上的几何特征定义盆结构风格。结果显示边界在计划看法在军队飞机安排在Huizhou亚盆显示器指责,它显示那,它被一种倾斜的扩展引起。计算差错滑动表演差错的长期的活动在盆发生了,并且一些边界差错在5.5妈后面保持活跃。差错系统的进化历史被重建。开始,在期间始新世早渐新世,主要,NNE-NE和NWtrending差错和NE惹人注目的grabens和half-grabens在盆形成了,一系列差错系统控制了免职。在期间晚渐新世早中新世,结构的活动是相对弱的,差错活动和差错生长率严厉地减少了。最后,在迟了的阶段从对礼品晚中新世,结构运动被重新激活,并且一些差错也被重新激活。我们的学习将更好帮助在华南海的北边缘理解忍受石油的盆的结构的特征和进化。

  • 标签: 珀尔河嘴盆 Huizhou 亚盆 差错活动 差错生长率
  • 简介:Objective:ToexaminetheexpressionsofMDM2,P53andP27proteinsinchronicesophagitis,para-cancermucosaandesophagealcarcinoma.Methods:ImmunohistochemistrywasusedtodetecttheexpressionsofMDM2,P53andP27proteinsinforty-sevenpatientssufferingfromchronicesophagitisandeighty-fivecasesofesophagealcarcinomaandcorrespondingpara-cancermucosa.Flowcytometry((FCM)wasappliedtodetectthequantitiesoftheseproteinsexpressedinfreshtissuesof48casesofesophagealcancerandtheirpara-cancertissuesand24casesofrelativenormalmucosaatthesurfaceofcuttingedge.Results:Immunohistochemistryresultsshowedthattheexpressionsofthethreestudiedproteinswereverysimilarintheepitheliaofchronicesophagitisandpara-cancermucosa(P>0.05).BoththequalitativeandquantitativestudiesdisplayedthattheP53proteinhadnoexpressionanditsaccumulationswouldappearonlyintheearlystagesofesophaguscancerationwhiletheMDM2andP27proteinshaddifferentdegreesofexpressionsincasesofnormalesophagealmucosa.MDM2proteinmarkedlyincreasedintheadvancedstagesofesophagealcanceration.AquantitativestudyshowedthattheexpressionofP27proteinhadalinearityofdecreasingtendency(F=9.132,P=0.002)inthecourseofesophagealcanceration.Conclusion:Chronicesophagitismaybeaprecancerouslesion.OwingtothechangesoftheP53andP27proteins,wecanalsoconcludethattheseoccurintheearlystagesofesophagusoncogenesis,howeverthechangesofMDM2expressionmayoccurintheadvancedstageofesophagealcanceration.

  • 标签: 食管癌 癌前病变 多基因表达 定量研究 定性研究
  • 简介:TheexitwavefunctionincludingzeroandhighorderLauezoneshasbeensimulatedbybothmulti-slicemethodandelectrondynamicdiffractionanalyticalexpression.Coincidenceofthesimulationsbythesetwomethodswasachieved.ThecalculatedresultsshowedthattheexitwavefunctionhighlydominatedbyzeroorderLauezone,whilehighorderonesmodifytheexitwavefunctiontosomeextentdependingonthesituation.HighorderLauezoneeffectsbecomeimportantforthefollowingcases:sampleconsistsoflightelements,thethicknessisverythin,latticeplanarspacingperpendiculartothedirectionoftheincidentbeamislarge,andtheelectronbeamhaslongwavelength.InthesecasestheexitwavefunctionshouldbecorrectedbyaddinghighorderLauezoneeffects.TheanalyticalexpressioniseffectiveandconvenientfordealingwithhighorderLauezoneeffects.

  • 标签: 定量分析 ZOLZ HOLZ 电子动力学衍射 检晶仪
  • 简介:Thenear-infrared(NIR)diffusereflectancespectroscopywasusedtostudythecontentofBerberineintheprocessedCoptis.TheallocatedproportionsofCoptistoginger,yellowliquororEvodiarutaecarpachangedaccordingtotheresultsoforthogonaldesignaswellasthetemperature.Foraswithdrawingthefullandeffectiveinformationfromthespectraldataaspossible,thespectraldatawaspreprocessedthroughfirstderivativeandmultiplicativescattercorrection(MSC)accordingtotheoptimizationresultsofdifferentpreprocessingmethods.Firstly,themodelwasestablishedbypartialleastsquares(PLS);thecoefficientofdetermination(R2)ofthepredictionwas0.839,therootmeansquarederrorofprediction(RMSEP)was0.1422,andthemeanrelativeerror(RME)was0.0276.Secondly,forreducingthedimensionandremovingnoise,thespectralvariableswerehighlyeffectivelycompressedviathewavelettransformation(WT)technologyandtheHaarwaveletwasselectedtodecomposethespectralsignals.AfterthewaveletcoefficientsfromWTwereinputintotheartificialneuralnetwork(ANN)insteadofthespectrasignal,thequantitativeanalysismodelofBerberineinprocessedCoptiswasestablished.TheR2ofthemodelwas0.9153,theRMSEPwas0.0444,andtheRMEwas0.0091.Thevaluesofappraisalindex,namelyR2,RMSECV,andRME,indicatethatthegeneralizationabilityandpredictionprecisionofANNaresuperiortothoseofPLS.TheoverallresultsshowthatNIRspectroscopycombinedwithANNcanbeefficientlyutilizedfortherapidandaccurateanalysisofroutinechemicalcompositionsinCoptis.Accordingly,theresultcanprovidetechnicalsupportforthefurtheranalysisofBerberineandothercomponentsinprocessedCoptis.Simultaneously,theresearchcanalsoofferthefoundationofquantitativeanalysisofotherNIRapplication.

  • 标签: 近红外线光谱学 最小平方 人工神经网络 小波转换
  • 简介:追踪作为多尺度知道的算法追踪雷达的新雷达回响回应由跨关联(MTREC)在这研究被开发在不同空间规模分析雷达回响的运动。雷达回响的运动,特别地与对流暴风雪联系了,在导致对流暴风雪的形成的气象学的系统之中由于复杂相互作用在各种各样的空间规模展出不同特征。为空回响区域,平常的关联技术生产零或运动向量的很小的大小。减轻这些限制,MTREC由关联(TREC)使用追踪的雷达回响有一个大盒子的技术驾驶风驾驶的系统的运动,和MTREC与一个小盒子使用TREC技术决定估计小规模的内部运动向量。最后,MTREC向量被综合获得系统的运动和小规模的内部运动。MTREC技术的性能与用案例研究的TREC技术相比:Wenzhou雷达和一个嚎啕线系统在2005年9月11日在2011年6月23日观察的Khanun台风由北京雷达检测了。结果证明那更空间地变光滑,连续向量领域能被MTREC技术产生,它在追踪全部雷达反射率模式导致改进。新多尺度的追踪计划被使用在量的降水nowcasting的表演上学习它的影响。在一1-h铅时间的重降水的地点和紧张与使用雷达和雨计量器的量的降水估计更一致。

  • 标签: 雷达回波分析 跟踪算法 降水估计 临近预报 多尺度 运动矢量
  • 简介:这篇文章主要在淹没,沉积交通和泛滥平原的词法变化上在开发综合2-D瞄准数字simulationmodel到期的tohigh沉积沉重的淹没流动。由于在泛滥平原的计算领域以内的内部、外部的边界和thearbitrary结构的复杂性,未组织的Finite-VolumeMethod(FVM)基于一个不规则的多角形网孔被得出以便complexboundaries的影响能集成于模拟。案例研究在更低的YellowRiver盆,在Huayuankou水文学车站的一个堤裂缝在被假定发生被进行1982的whena洪水规模在这个区域被承受。sedimentdeposition和侵蚀的模仿的空间分发能被用来相当解释“黄河的更低的部分的推迟的河”的自然现象。因为沉积免职anderosion被新值在结束修改,到variable-river-bed的水issimilar的淹没进程在模拟期间调节,这被结束每次走。团和动量conservationwere严格地在模拟期间列在后面。因此,由综合模拟模型的floodplainevolutions的预言,在这研究求婚了,如果一个泛滥平原的真实条件能详细被获得,能andaccurately足够地被给。

  • 标签: 高含沙洪水 洪泛平原 形态变化 溃坝 定量研究法 挟沙水流
  • 简介:Vibrationfatigueisthemainfailuremodeofcompressorblade.Evaluatingthevibrationstressofbladethatleadstocrackingisveryusefulforanalysisofvibrationfatigue.Inthispaper,fatiguestressestimationmethodsbyquantitativefractographywerestudiedthroughexperimentalbladeandin-servicefirst-stagecompressorbladeinordertoevaluatetheinitiationvibrationstressofin-serviceblade.Theanalysisprocessofinitiationvibrationstresswasestablished.Theevaluatingresultofvibrationstressofin-servicebladesubjectedtocentrifugalforceandbendingvibrationstressagreeswithaeroenginetestresult.Itisshownthattheevaluationmethodcannotonlyevaluatetheequivalentfatiguestressesofdifferentcrackdepthsbutalsoyieldtheinitiationequivalentfatiguestress.

  • 标签: 钛合金叶片 振动应力 评价方法 定量断口 航空发动机试验 疲劳应力
  • 简介:生来的线人口从超级混合米饭Xieyou9308导出的recombinant(XieqingzaoB/Zhonghui9308)并且它的基因连接地图被用来在低、正常的氮(N)层次下面为米饭收益特点检测量的特点loci(QTL)。为在9个染色体上在27个区域散布的收益特点的52QTL的一个总数被检测,与解释phenotypic变化的4.93%26.73%的每QTL。十一QTL同时在二个层次下面被检测,并且30不同QTL在二个N层次下面被检测,从而建议在低、正常的N层次下面控制米饭生长的基因底是不同的。为圆锥花序的数字的QTL每植物,每圆锥花序小穗状花小穗数,在二个N层次下面每圆锥花序每圆锥花序,和谷物密度充满的谷物数在染色体3上在RM135RM168间隔被检测。QTL为在二个N层次下面每圆锥花序每充满的谷物的圆锥花序和数字小穗状花小穗数,以及每圆锥花序每植物和谷物密度圆锥花序数在低N水平下面,在染色体8上在RM5556RM310间隔被检测。上述描述的QTL为再循环的米饭N与以前报导的QTL分享了类似的区域。

  • 标签: 数量性状位点分析 水稻生长 产量性状 氮水平 QTL定位 单株有效穗数
  • 简介:Sincetheconceptofsustainabledevelopmentemergedinthelate1980s,moreandmorecountriesandre-gionshavebeenutilizingsustainabledevelopmentastheirdevelopingstrategy.Butdecadeshavepassedwithoutanyeffectivemethodsavailabletoquantitativelyassesssustainabledevelopment.Sincetheecologicalfootprintevalua-tionmethodinitiatedin1992,ithasbecomepopularinquantitativeassessmentofsustainabledevelopmentbecauseofitsconvenience,easy-understanding,andreliability.AsoneofthebiggestcoastalcitiesinnorthChinaandtheeconomiccenteroftheBohaiCoastalRegion,Tianjin'sgrossdomesticproduct(GDP)was369.762billionyuanin2005,accountingfor2.0%ofthewholenation'sGDP.ThepaperanalyzesTianjin'sdevelopmentwiththeecologicalfootprintmethod,andtheresultsshowthatTianjin'secologicalfootprintandbiocapacityin2005were2.507gha/capand0.276gha/caprespectively.Theecologicaldeficitwas2.230gha/cap.Andfrom1980to2005,Tianjin'secologi-caldeficitper104yuanGDPdecreased;whilepercapitaecologicaldeficithasbeentendingtoincreaserapidlyinrecentyears.AlltheseresultsdemonstratethatTianjinisinastateofunsustainabledevelopment.

  • 标签: 天津 生态承受力 生态经济 经济发展
  • 简介:Theecologicalcarryingcapacity,animportantindica-tortoevaluatethesustainabledevelopmentoftheecosystem,meansthepotentialabilityofthenaturalecosystemtocarryso-cioeconomicdevelopmentwhiletheecosystemishealthy.Itislimitedbythecarryingcapacityofnaturalresourcesandenviron-mentandtheelasticityoftheecosystem.Itwillbegreatlysignifi-canttostudytheecologicalcarryingcapacityofHainanProvince,thefirstecologicalprovinceadmittedbytheStateEnvironmentalProtectionAdministrationinChina.Notonlyisthenaturaleco-systemreflected,butalsotheeffectsofhumanactivitiesareem-phasizedbyintegratingtheecosystemhealthanalysisintotheecologicalcarryingcapacityresearch.Theresearchresults,usingtheFactorAnalysistoolsofsoftwareSPSS,indicatethattheeco-logicalcarryingcapacityofHainanProvincefluctuatedobviouslyfrom1996to2005.TheleveloftheecologicalcarryingcapacityofHainanProvincewasrelativelyhighin1996,andreachedintotroughfrom1997to1999.Ithassteadilyascendedtobeabovethemiddlelevelsincethe21stcentury.Theresultsalsoshowthatpolicyfactors,especiallytheimplementationofthe'EcologicalProvince'strategy,wereimportantdrivingforcestoinfluencetheecologicalcarryingcapacity.Withthepopulationrapidlyincreas-ing,thelandandwaterresourcespercapitahavedecreasedquickly.Theamountoftheecologicalcarryingcapacitywaspro-motedremarkablybysocioeconomicdevelopmentespeciallyeconomicgrowthandtechnologyapplications.Allofthesewillprovideusefulsuggestionstoestablishandenactregionaldevel-opmentpolicies,especiallyforprotectingandreconstructingtheecologyandenvironmentofHainanProvince.

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  • 简介:在这研究,一个超声的喷雾器单位被建立为液体样品察觉改进导致激光的故障光谱学(解放)的定量分析能力,用象一个例子的重金属元素Pb的答案。一个分析过程被设计保证LIBS的稳定性和重覆性发信号。一系列实验根据过程严格地被执行。试验性的参数基于脉搏精力影响和排放特征的时间的进化的研究被优化。血浆温度和电子密度被计算证实血浆的LTE状态。由背景使紧张正常化被表明是在这个工作的一个适当方法。为Pb分析的这个系统的线性范围被与不同集中测量12件样品在04,150ppm的一个集中范围上证实。适合的刻度曲线的关联系数在线性范围象99.94%一样高,并且Pb的LOD作为2.93ppm被证实。集中预言实验被执行在上一进一步六件样品。系统的优秀量的能力被样品的真实、预言的集中的比较表明。最低相对错误是0.043%并且最高是仅仅7.1%。

  • 标签: 超声波雾化器 定量分析 激光诱导 铅分析 水溶液 光谱
  • 简介:Deterministic,probabilisticandcomposite-gradingmethodsareusedtogetthepossiblelocationsofstrongearth-quakesinthefutureinNorwestBeijinganditsvicinitybasedonthequantitativedataandtheiraccuracyaboutactivetectonicsintheresearchareaandbyordering,somequestionsintheresultsarealsodiscussed.Itshowsthatthemostdangerousfaultsegmentsforstrongearthquakesinthefutureinclude:segmentsBandAofthesouthernboundaryfaultoftheYangyuanbasin,thesouthernboundaryfaultoftheXuanhuabasin,theeastsegmentofthesouthernHuai¢anfaultandtheeastsegmentofthenorthernYanggao-Tianzhenfault.ThemostdangerousareaisYangyuan-Shenjingbasin,thesecondoneisTianzhen-Huai¢an-XuanhuabasinandthethirddangerousareasareWanquan-ZhangjiakouandnortheastofYuxiantosouthwestofFanshan.

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