简介:目的将100g/L顺式氯氰菊酯悬浮剂和8.5%甲嘧·高氯氟卫生杀虫泡腾片按不同比例混配后研究对家蝇的防治效果,为提高单剂对家蝇杀灭效果提供实验依据。方法采用药纸接触法测定比较顺式氯氰菊酯与甲嘧·高氯氟及其不同比例混配剂对家蝇的毒力;采用共毒系数法确定混配剂的联合作用;采用药纸接触法测定家蝇抗性倍数;按照农药登记卫生杀虫剂室内药效试验方法,测定比较混配剂不同比例对家蝇的表面触杀和空间喷雾杀灭效果。结果混配剂对家蝇的击倒效果较单剂有明显提高。混配剂中顺式氯氰菊酯和甲嘧·高氯氟浓度比为1∶10和1∶15时,共毒系数分别为317.92和297.70。混配剂对抗性家蝇进行表面触杀时宜使用的有效成分浓度为顺式氯氰菊酯0.33g/L、甲嘧·高氯氟5.0g/L,空间喷雾时宜使用的有效成分浓度为顺式氯氰菊酯1.0g/L、甲嘧·高氯氟15.0g/L。结论顺式氯氰菊酯和甲嘧·高氯氟不同比例混配剂对家蝇有明显增效作用。混配剂对抗性家蝇有良好的击倒和致死作用,能够提高防治效果。
简介:Inthiswork,asimpleandfacileone-potoleylaminesolvothermalsyntheticmethodwasdevelopedtosynthesizeCu_2ZnSnS_4(CZTS)nanocrystals.AndtheCu_2ZnSn(S,Se)_4(CZTSSe)thinfilmswerepreparedbyselenizingCZTSnanocrystals.TheobtainedCZTSnanocrystalsandCZTSSefilmswerestudiedusingX-raydiffraction(XRD),transmissionelectronmicroscopy(TEM),scanningelectronmicroscopy(SEM),energy-dispersiveX-rayspectroscopy(EDX),andultraviolet–visiblespectrophotometer(UV–Vis).TEMresultsshowthatthesphere–likeCZTSnanoparticleswithdiameterbetween12and35nmarepolydispersed.XRDstudiesindicatethatthepreparedCZTSnanocrystalsformkesteritecrystalstructure,andtheCZTSSefilmswithkesteritecrystalstructurearealsoobtainedattheannealingtemperaturesof500and550°C.Inparticularafterannealingat500°Cfor20min,theCZTSSefilmexhibitsasmooth,uniform,crack-free,andlarge-grainedtopographyandpossessesCu-poorandSn-richcomposition.Moreover,itshowsstrongopticalabsorptionfromvisibletonear-infrared(IR)region,anditsopticalbandgap(Eg)isfoundtobeabout1.44eV.
简介:Asafundamentalpropertyofnuclei,atomicmassesarewidelyusedinmanydomainsofscienceandengineering.Areliableatomicmasstablederivedfromtheexperimentaldata,wheretheatomicmassesandtherelevantexperi-mentalinformationcanbefoundconveniently,isinhighdemandbytheresearchcommunity.Tomeetthedemands,theAtomicMassEvaluation(AME)wasinitiatedin1950'sandaseriesofAMEmasstableshavebeenpublishedeversince.CurrentlytheAMEservestheresearchcommunitybyprovidingthemostreliableandcomprehensiveinformationrelatedtotheatomicmasses.ThenewatomicmassevaluationAME2016waspublishedintheMarchissueofChinesePhysicsCastwocom-plementarypapers[1;2].
简介:ThispaperpresentsabriefoverviewofCO2reformingofCH4(CRM)byvariousformsof'arc'plasma,whichismoresuitabletoCRM,andtheenergyefficiencyisusedtoevaluatedifferentplasmaprocessesspecifically.Accordingtothereportedresults,thearcthermalplasmawithbinodeexhibitedbetterperformance.Moreover,theplasmaCRMprocesswascomparedwiththereportedplasmasteamreformingofCH4(SRM)process,andtheresultsshowedthattheformerprocesshasadvantagesonenergyefficiencyandCH4consumption.Additionally,itisbelievedthattheplasmaCRMprocesswouldbecompetitivewiththeconventionalSRMprocessinbothenergyefficiencyandCO2emissiononcetheheatmanagementisemphasizedandtherenewablepowerisused.Finally,aconceptofplasmareactorforindustrialapplicationisproposed.
简介:摘要目的对比瑞芬太尼、芬太尼单独与联合应用于全麻的临床效果。方法选取2014年1月到2015年1月我院需实施胃肠道全麻手术的99例患者作为本次研究的对象,将患者依据麻醉方式分为甲、乙、丙三组,甲组应用芬太尼全麻,乙组应用瑞芬太尼全麻,丙组联合应用芬太尼与瑞芬太尼全麻,对比三组患者的血流动力学情况、苏醒时间以及用药量。结果甲组诱导时心率与平均动脉压要明显高于乙丙两组(P<0.05);乙组苏醒时心率与平均动脉压要明显高于甲丙两组(P<0.05);甲组苏醒时间要明显长于乙丙两组(P<0.05);丙组瑞芬太尼用量要明显少于乙组,芬太尼用量要明显少于甲组,有统计学差异(P<0.05)。结论三组全麻方法都能满足胃肠道手术要求,但联合应用芬太尼与瑞芬太尼全麻,术中能保持患者血流动力学稳定,患者能较快苏醒,可以有效减少用药量,值得在临床上大力推广。
简介:TheNaGd(WO_4)_2:Eu~(3+)phosphorswerepreparedbythemicroemulsionmediatedhydrothermalmethod.ThemorphologyandsizeofthesamplescouldbedependentonthepHintheinitialsolution.Thesephosphorsobtainedhadastrongabsorptionat395nmmatchingwiththepopularemissionofnear-UVLEDchips,andcouldemitintenseredlightat616nm.Thesmallellipsoid-likeparticlesorshortrodswereprovidedwithlargeparametersofoscillatorstrength?_2andasymmetryratio.Comparedtotheellipsoid-likephosphors,therod-likephosphorstookonstrongeremission,longerlifetimeandlargerquantumefficiency.Thisworkdemonstratedthattheone-dimensionNaGd(WO_4)_2:Eu~(3+)phosphorsmightbeamorefavorabledevicethanzero-dimensiononesforphotoluminescence.
简介:目的:研究分析二甲双胍和氨氯地平同时应用于肥胖型高血压的有效性。方法:抽选在本院接受治疗的86例肥胖型高血压患者,按照随机数字表法分为观察组与对照组。单纯氨氯地平治疗应用于对照组,二甲双胍联合氨氯地平应用于观察组。经过相同的治疗周期后,对比临床疗效。结果:经过3个周期的治疗后,观察组与对照组舒张压(DBP)、收缩压(SBP)均有所下降,观察组舒张压、收缩压下降程度明显大于对照组(P〈0.05)。对照组治疗前后甘油三酯(TG)、总胆固醇(TC)比较,差异均无统计学意义(P〉0.05)。观察组治疗前后TG、TC比较,差异均有统计学意义(P〈0.05)。观察组有效率为81.58%,对照组为71.05%,差异有统计学意义(P〈0.05)。结论:二甲双胍联合氨氯地平用药方案较单纯氨氯地平治疗肥胖型高血压效果好。