简介：Ｆａｒａｄａｙ－ｃｕｐＣｏｎｔｒｏｌａｎｄＭｅａｓｕｒｅｍｅｎｔＰｒｏｇｒａｍＢａｓｅｄｏｎＭＳＷｉｎｄｏｗｓ￥ＺｈａｎｇＧｕｉｘｕａｎｄＬｕＸｕｅｑｉｕＡｎｅｗｆａｒａｄａｙ－ｃｕｐｃｏｎｔｒｏｌｐｒｏｇｒａｍｗｈｉｃｈｒｕｎｓｏｎＭＳＷｉｎｄｏｗ...

简介：打开注册表，找到HKEY_CURRENT_USER\Software\Microsoft\windows\CurrentVersion\Policies主键，然后在该分支下新建一个主键“WinoldApp”，在窗口右侧机关报建一个Dword值的“Disabled”，然后将键值设为1，重新启动计算机，当你在返回到ms-dos下，便看不到硬盘盘符了。

简介：目的研究MSSQLServer数据库的取证方法。方法通过对MSSQLServer数据库存储结构的研究,以名为＂sradmin＂的数据库为实例,介绍了SQLServer数据库的提取、检验分析方法。结论本文提出的方法可以提取、检验分析SQLServer数据库,具有很强的实用性。

简介：Thesolid-phasemicroextraction(SPME)combinedwithgaschromatography/massspectrometry(GC/MS)wasusedtodetermineandanalyzeorganicpollutantsincokingwastewater.Basedonthefactthatthemaincompoundsinthewastewaterwereorganics,somekeyparametersoftheSPMEwereoptimized.Themethodhasgoodlinearity(itscorrelationcoefficients>0.99)intherangedetermined,itsrelativestandarddeviations(RSD)arelessthan15%,anditsrecoveryisfrom87.9%to128.1%withthelowestquantificationlimitof5μg/L.Thismethodhasbeenusedtomeasure15organicpollutantsinwastewaterfromacertaincokingplant.Theresultsshowthatcomparedwiththeconventionalmethod,itcansaveanhourinpretreatmenttime.Itisafast,low-cost,accurate,simpleandefficientanalyticalmethodindeed.

简介：安捷伦科技在本年度的ASMS会议（美国质谱协会）上发布了Agilent7800ICP-MS系统,该款入门级仪器设立了常规元素分析的新标准.作为安捷伦业界领先的ICP-MS产品系列的最新成员,7800提供了较宽的动态范围、出色的基质耐受性和一流的干扰去除能力.安捷伦光谱产品副总裁PhilipBinns表示：“新的7800ICP-MS解决方案可即刻运行.

简介：采用水蒸气蒸馏法从茵陈中提取挥发油，用气相色谱-质谱联用（GC—MS）法测定并分析其化学成分，用归一化法测定其相对含量，结果鉴测出茵陈挥发油含有42个成分，占挥发油总成份的83．2％。

简介：采用同时蒸馏萃取法（SDE）对镇江恒顺香醋进行预处理,应用毛细管气相色谱（CGC）和色质联用（GC/MS）技术对其进行定性定量分析,对同时蒸馏萃取法的结果进行了分析。结果表明,镇江恒顺香醋中低沸点的物质含量较多,镇江恒顺香醋中检测出了32种香味成分,有酸类、酯类、醇类、酮类、醛类、杂环化合物等。主要香气成分有：酸类10种,醇类8种,酯类1种,醛类1种,酮类3种,其中醋酸、吡啶、四甲基肼、3-戊醇、2-糠醛、戊酸、1,1-二乙酰基乙烷、2-羟基-2-甲基-丙酸、肉桂酸、己酸、苯甲酸在镇江恒顺香醋中的含量较高。这些香味物质糅合在一起赋予镇江香醋的独特香气和风味。

简介：摘要：如今电信行业的发展日新月异，特别是在网络架构中更是一种天翻地覆的变化，其包含着分组化，宽带化，还有动态化以及低成本的特点。本文分别对SDH以及MS-OTN做出分析，接着对他们的融合方案应用进行探讨。

简介：AristolochiaeFructus,aChineseherbalmedicinederivedfromthefruitofAristolochiacontortaBge.,containsnephrotoxicaristolochicacidanalogues(AAAs).Accordingtoancientmedicaltexts,variousmedicinalpartsofthefruitofA.contortawereeverused.Inordertorevealwhichpartcouldbesafelyandeffectivelyused,itisnecessarytoanalyzethechemicalprofilesofdifferentmedicinalparts.HereinwecomparedthechemicalcompositionsanddeterminedaristolochicacidI(AA-I)andaristolochicacidII(AA-II)inthefourpartsviz.outerpericarp,innerpericarp,septum,andseed.Ultra-highperformanceliquidchromatographyequippedwithquadrupoletime-of-flightmassspectrometry(UHPLC-QTOF-MS)wasappliedforchemicalprofiling.Ultra-highperformanceliquidcoupledwithtriplequadrupolemassspectrometry(UHPLC-QqQ-MS)wasemployedtoquantifyAA-IandAA-IIindifferentparts.Itwasfoundthatthechemicalcompositionsofthefourpartsvariedbothqualitativelyandquantitatively.Atotalof10AAAs,including5aristolochicacidsand5aristolactams,togetherwith3alkaloids,wereunambiguouslyortentativelyidentifiedbyUHPLC-QTOF-MS.ThequantitativelyanalyticalresultsobtainedbyUHPLC-QqQ-MSshowedthatAA-IandAA-IIexclusivelyaccumulateintheseedsofA.contorta.Thesefindingsprovidesupportingdatafortherationalselectionofmedicinalparts.

简介：目的：建立测定SD大鼠血浆中硫辛酸的HPLC-MS/MS法,并将其应用于硫辛酸的毒代动力学研究。方法：采用XAquaC18色谱柱（150mm×4.6mm,5μm）;流动相为甲醇（A）∶水（B）,0~2minA∶B=20∶80,2~7minA∶B=95∶5,7~9minA∶B=20∶80,梯度洗脱9min;流速为1ml/min。采用负离子多反应监测模式（MRM）进行监测,离子对：硫辛酸m/z205→171,内标布洛芬m/z205→161,测定大鼠连续28d灌胃硫辛酸300mg/kg后的主要药动学参数。结果：硫辛酸线性范围为0.005~5μg/ml,最低定量限为0.005μg/ml;日内和日间精密度良好,RSD均〈15%。大鼠初次和末次给药后的AUC0~24h分别为（23.16±2.45）和（21.27±2.62）μg·h·ml-1,AUC0~∞分别为（23.70±2.56）和（21.67±2.66）μg·h·ml-1,cmax分别为（24.34±2.50）和（22.23±2.61）μg/ml,t1/2分别为（5.22±0.57）和（4.96±0.23）h。硫辛酸在SD大鼠体内无明显的药物蓄积现象。结论：该方法灵敏度高、专属性强、操作简便,适用于生物样本中硫辛酸的测定及毒代动力学研究。

简介：目的建立HPLC-MS／MS法同时测定人血浆中的安非他酮及其代谢产物4-OH-安非他酮的浓度。方法血浆样品经乙腈沉淀蛋白后，采用HypurityC18柱（150mm×2．1mm，5μm）以乙腈-0．1％甲酸-10mm01．L。甲酸铵缓冲液（65：10：25）为流动相，流速为0．2mL·min，通过电喷雾离子化离子阱质谱，以二级质谱选择离子反应监测（SRM）方式进行检测。结果安非他酮线性范围为1．172～1200ng·mL^-1，4-OH-安非他酮线性范围为0．42-430ng·mL^-1,安非他酮和4-OH-安非他酮最低检测浓度分别低于1．0ng·mL^-1和0．21ng·mL^-1结论本法特异性强、灵敏度高，操作简便快速，测定结果可靠，可以准确地测定人体血浆安非他酮和4-OH-安非他酮的浓度。

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简介：采用同时蒸馏萃取法提取北苍术中的挥发油,通过GC-MS对其化学成分进行分析。挥发油中含有51个化合物,鉴定出49个。挥发油中呋喃二烯含量最多,其次是马兜铃酮和α-蒎烯。

简介：采用GC／MS法测定作为化工原料的石脑油中含量小于0．1％的MTBE，将汽油直接进样，简便快速，方法具有很高的选择性和准确性，检测灵敏度高，测定结果令人满意。

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简介：建立槟榔中槟榔碱的高效液相色谱-电喷雾质谱（HPLC—ESI-MS）检测方法。通过优化色谱和质谱条件，以β-蒎烯为内标物，利用质谱定性和色谱定量测定槟榔碱的含量。槟榔碱在质量浓度为10．8～86．4μg／mL时的线性关系良好，R=0．9985；最低检测限为0．4μg／mL（S／N=3）；最低定量限为0．9μg/mL（S／N=10）；平均回收率为98．32％，RSD为3．44％（n=5）。该方法具有流动相简单、分析时间短，以及不需对样品进行衍生，操作简便、定量准确和抗干扰能力强等优点。

简介：OnOctober27,2001,alargeearthquakewithMs6.0,namedtheYongshengearthquake,occurredalongtheJinshajiangsegmentofChenghaifaultinYongshengCounty,YunnanProvince.ItisthelargesteventtooccuralongtheChenghaifaultinthelast200years.Theseismo-geologicalsurveyshowsthattheseismogenicfault,whichistheJinshajiangsegmentofChenghalfault,takesleft-lateralstrike-slipasitsdominantmovementpattern.Accordingtodifferencesinverticalmotion,motiontime,landformsandscales,theChenhalfaultcanbedividedintoeightsegments.TheJinshajiangsegmenthasaverticaldislocationrateof0.4mm/a,farlowerthanthemeanrateoftheChenghaifault,about2.0mm/a.It'sdeducedthatthetwosidesofJinshajiangsegment'stuck'tightlyandhinderedthestrike-slipoftheChenghaifault.ThestrongearthquakedistributionbeforethiseventshowsthattheJinshajiangsegmentwasintheseismicgap.TheChenghaifault,asaboundaryoftectonicsub-blocks,makestheNorthwestYunnanblockandtheMiddleYunnanblockmoveclockwise,andtheirmarginsmoveoppositelyalongtheChenghalfault.InthemotionprocessoftheChenghaifault,structuralhindranceandtheseismicgapofstrongearthquakesarepropitioustotheconcentrationandaccumulationofstructurestress.Asaresult,theYongshengMs6.0earthquakeoccurred.TheSujiazhuang-ShangangfusegmentissimilartotheJinshajiangsegmentwithalowverticalmotionrateof0.3mm/aandintheseismicgap.Soit'spostulatedthatthesegmentmaybecomeanewstructurehindrance,andtheYongshengMs6.0earthquakemaytriggertheoccurrenceoffuturelargeearthquakesalongthissegment.

简介：Thechangelawsofintensityofnearly200moderate-smallearthquakeswithMs=2.0~5.5occurringontheChinesemainlandsince1954havebeenanalyzedandarecomparedwiththatofmoderatelystrongearthquakes(Ms≥5.0).Theresultsshowthatthereisquiteobviousregionalityinthestatisticallawsbybothmoderate-smallearthquakesandmoderatelystrongearthquakes:attenuationofintensityinEasternChinaisslowerthanthatinWesternChinaandtheratioofthemajoraxistotheminoraxisofiso-seismallinesinEasternChinaissmallerthanthatinWesternChina.Theresultsalsoshowthatforafixedmagnitudetheattenuationofintensityofmoderate-smallearthquakesisfasterwhenintensityishigherthanV+andslowerwhenintensityislowerthanV-incomparisonwiththatofmoderatelystrongearthquakes.Furthermore,therealsohavebeensomedifferencesintheaspectsasintensity-magnituderelationbetweenstatisticallawsofmoderate-smallearthquakesandmoderatelystrongearthquakes.Thesedi

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简介：ThedistributionoftheintensityoftheMojiangMS5.9earthquakeinYunnanProvinceisexpounded,andthedamagecharacteristicsofbuildingsandthedamageratioandseismicdamageindexofvariousbuildingstructuresineachintensityareaarecomparedwiththoseofTheChineseSeismicIntensityScale.Themainbasisandmethodofseismicintensityassessmentarediscussedinthispaper.Itisconcludedthat:①Theseismicintensityshouldbebasedontheearthquakedamageofthehousingstructure,whichtakesupahighratiointheseismicintensityassessment.Itisrecommendedthatseismicintensityisestimatedbycalculatingtheaverageseismicdamageindex.②ThehighestintensityoftheMojiangMS5.9earthquakeisVIIIdegrees,withthelongaxistrendinginthenorth-westdirection.TheareaaboveVIIdegreesis5,180km^2.③TheintensitydistributionoftheMojiangMS5.9earthquakemeetsthenationalstandardandthedistributionlawofseismicintensityinYunnan.