简介:TheobjectiveofthisresearchwastoexamineifcertainstrainsofBacillusbacteria,couldsurviveindrypowderproductsandifso,couldthebacteriadegradeorganiccontaminantsinsalinewastewateronaship.Aspartofthestudy,weisolated7domesticatedstrainsnamedNY1,NY2,…,andNY7,thestrainNY6showedtohavethebestperformancefororganicmatterdegradationandcouldsurviveindrypowdermorethan3months.NY6wasidentifiedasBacillusaerius,basedonthemorphologicalandphysic-chemicalproperties.Itsoptimalgrowthconditionswereasfollows:salinitywas2%;temperaturewas37℃;pHwasin6.5-7.0;bestratioofC:N:Pwas100:5:1.ThecapabilityofitsdrypowderforChemicalOxygenDemand(COD)removalwas800mgCOD/ginsynthesizedmarinewastewaterwith2%salinity.Thesporesinthedrypowderwere1.972×108g-1.
简介:May21toMay24,2012TheOCEANS’12Conference,jointlysponsoredbytheMarineTechnologySociety(MTS),theOceanicEngineeringSocietyoftheIEEE,andtheKoreanAssociationofOceanScienceandTechnologySocieties,isamajorinternationalforumforscientists,engineers,andresponsibleoceanuserstopresentthelatestresearch
简介:分析了电力推进装置的优点及其应用在12缆物探船上所带来的益处。该船采用电力推进系统不仅满足多种工况作业和航行的需求,而且所有的推进装置都可以分开控制,也可以在驾驶室通过联动控制系统综合控制。
简介:从2000年10月~2001年6月,大秦线湖东工务段管内更换75-1/12混凝土枕固定型提速道岔20组;2001年4月份对2000年更换的12组提速道岔进行放散和焊连,使之成为无缝道岔,并作为跨区间超长无缝线路的一部分.为此,建立了观测制度,列为重点区段加强管理.