90plus 纳米粒度仪应用案例-20
90plus纳米粒度仪应用案例
文献名：reducingliposomesizewithultrasound:bimodalsizedistributions
作者：dixonj.woodbury,erics.richardson,aaronw.grigg,rodneyd.wellingandbrianh.knudson
departmentofphysiologyanddevelopmentalbiology,brighamyounguniversity,provo,ut,usa
departmentofphysiologyanddevelopmentalbiology,provo,ut,usa
摘要：sonicationisasimplemethodforreducingthesizeofliposomes.wereportthesizedistributionsofliposomesasafunctionofsonicationtimeusingthreedifferenttechniques.liposomes,mildlysonicatedforjust30sec,hadbimodaldistributionswhensurface-weightedwithmodesatabout140and750nm.withextendedsonication,thesizedistributionremainsbimodalbuttheaveragediameterofeachpopulationdecreasesandthesmallerpopulationbecomesmorenumerous.independentmeasurementsofliposomesizeusingdynamiclightscattering(dls),transmissionelectronmicroscopy(tem),andthenystatin/ergosterolfusionassayallgaveconsistentresults.thebimodaldistribution(evenwhennumber-weighted)differsfromtheweibulldistributioncommonlyobservedforliposomessonicatedathighpowersoverlongperiodsoftimeandsuggeststhatadifferentmechanismmaybeinvolvedinmildsonication.theobservationsareconsistentwiththefollowingmechanismfordecreasingliposomesize.duringultrasonicirradiation,cavitation,causedbyoscillatingmicrobubbles,producesshearfields.largeliposomesthatenterthesefieldsformlongtube-likeappendagesthatcanpinch-offintosmallerliposomes.thisproposedmechanismisconsistentwithcolloidaltheoryandtheobservedbehaviorofliposomesinshearfields.
关键词：sonication,liposome,dynamiclightscattering(dls),transmissionelectronmicroscopy(tem),acousticmicrostreaming,colloidsinshearfields
气动圆顶阀插入式密封圈之产品工作原理及其主要特点
旋片式真空泵抽气速率配用功率
生活污水处理工艺流程示意图
智能集菌仪的使用说明
纯净水灌装生产线一直在不断的突破自我
90plus 纳米粒度仪应用案例-20
DSNU-32-10-P-AVAS
8000型水锤吸纳器之产品有哪些特点及注意事项
身高体重全自动测量秤电子*
NC自动送料机的安装顺序
超细玻璃棉毡有检测报告吗
生活污水处理设备报价
立式超细磨机的磨粉效果好不好？世邦集团为您提供超细磨设备报价
Q911F电动调节型三片式内螺纹球阀特点技术参数和性能
电子个人剂量计数据
贵州贵阳便携式野外流动土质检测仪
意大利FIP隔膜阀安装及使用原理
再坚硬的刀具也会有磨损， 那你知道磨损的原因吗？
常见的三种测试粉体密度的方法是哪三种
20L凝胶灌装机 在运行中需要注意的事项
文献名：reducingliposomesizewithultrasound:bimodalsizedistributions
作者：dixonj.woodbury,erics.richardson,aaronw.grigg,rodneyd.wellingandbrianh.knudson
departmentofphysiologyanddevelopmentalbiology,brighamyounguniversity,provo,ut,usa
departmentofphysiologyanddevelopmentalbiology,provo,ut,usa
摘要：sonicationisasimplemethodforreducingthesizeofliposomes.wereportthesizedistributionsofliposomesasafunctionofsonicationtimeusingthreedifferenttechniques.liposomes,mildlysonicatedforjust30sec,hadbimodaldistributionswhensurface-weightedwithmodesatabout140and750nm.withextendedsonication,thesizedistributionremainsbimodalbuttheaveragediameterofeachpopulationdecreasesandthesmallerpopulationbecomesmorenumerous.independentmeasurementsofliposomesizeusingdynamiclightscattering(dls),transmissionelectronmicroscopy(tem),andthenystatin/ergosterolfusionassayallgaveconsistentresults.thebimodaldistribution(evenwhennumber-weighted)differsfromtheweibulldistributioncommonlyobservedforliposomessonicatedathighpowersoverlongperiodsoftimeandsuggeststhatadifferentmechanismmaybeinvolvedinmildsonication.theobservationsareconsistentwiththefollowingmechanismfordecreasingliposomesize.duringultrasonicirradiation,cavitation,causedbyoscillatingmicrobubbles,producesshearfields.largeliposomesthatenterthesefieldsformlongtube-likeappendagesthatcanpinch-offintosmallerliposomes.thisproposedmechanismisconsistentwithcolloidaltheoryandtheobservedbehaviorofliposomesinshearfields.
关键词：sonication,liposome,dynamiclightscattering(dls),transmissionelectronmicroscopy(tem),acousticmicrostreaming,colloidsinshearfields
气动圆顶阀插入式密封圈之产品工作原理及其主要特点
旋片式真空泵抽气速率配用功率
生活污水处理工艺流程示意图
智能集菌仪的使用说明
纯净水灌装生产线一直在不断的突破自我
90plus 纳米粒度仪应用案例-20
DSNU-32-10-P-AVAS
8000型水锤吸纳器之产品有哪些特点及注意事项
身高体重全自动测量秤电子*
NC自动送料机的安装顺序
超细玻璃棉毡有检测报告吗
生活污水处理设备报价
立式超细磨机的磨粉效果好不好？世邦集团为您提供超细磨设备报价
Q911F电动调节型三片式内螺纹球阀特点技术参数和性能
电子个人剂量计数据
贵州贵阳便携式野外流动土质检测仪
意大利FIP隔膜阀安装及使用原理
再坚硬的刀具也会有磨损， 那你知道磨损的原因吗？
常见的三种测试粉体密度的方法是哪三种
20L凝胶灌装机 在运行中需要注意的事项