简介：TheTheGreat-WestDykewithalengthof6.7km,thelargestseawallinChina,wascompletedinJune,1994.Thispaperintroducesstructureoptionsofnibblemoundseawallonsoftfoundationandanewtypeofarmourblock-hexagonmultiholeblock(HMB)andanewmethodoftreatmentforsoftfoundationbyusingunderwaterexplosion.ConstructionpracticeofsomeprojectsinChinashowsthatbyusingthismethodgoodeffectoftreatmentandmarkedeconomicbenefitcanbeachievedbyusingthismethod.

简介：为了学习简历，活跃代谢物由导出海绵的未耕作的共生者生产了，海绵Gelliodesgracilis的共生者的一个metagenomicDNA图书馆被构造。DNA的平均尺寸在图书馆插入是20kb。这个图书馆用纸圆盘assaying为抗菌素活动被屏蔽。二克隆对小球菌tetragenus显示了抗菌剂活动。这二克隆的代谢物通过HPLC被分析。结果证明他们的代谢物与主人E的那些相当不同。包含向量pHZ132的关口iDH5α和主人。这研究可以介绍一条新途径给探索简历海绵共生者的活跃代谢物。

简介：TheWei-LiuwatersupplyingsubmarinepipelineisatpresentthelongestoneofthekindinChina.Itisabout4kilometerslongfromWeihaiCitytoLiugongIslandinShandongprovince.Ittookonlyhalfayeartodesignandconstructit.Theprojectwasofahigheconomicefficiencyandsomepracticalexperienceswereachieved.Inthispaperageneralintroductiontothedesignandconstructionofthispipelineispresentedandsuchproblemsasthestabilityofthepipelineinverysoftclay,designofcurvedslideforlaunchingandestimationofdraggingforcesareexpounded.

简介：ThewildPorphyrayezoensiscollectedfromtheQingdaocoastwasusedtoprepareprotoplastsbyenzymedigestion.Thepurelinewasconstructedbycultivatingtheprotoplasts.The18SrDNAoftheP.yezoensispurelinewasclonedandsequenced.Sequenceanalysiswasexecutedforthissequenceandother22sequencesretrievedfromGenBank.Aphylogenetictreewasconstructedusingtheneighbor-joiningmethod.Theresultsrevealedahighdiversityof18SrDNAsequencesingenusPorphyraandtheconsiderablevariationof18SrDNAsequencesindifferentstrainsofthesamespeciesP.yezoensisandP.tenera.Significantdifferenceof18SrDNAsequencewasobservedbetweenP.yezoensisfromQingdao,China,andthetwostrainsofP.yezoensisfromJapan,butthethreestrainsofP.yezoensisformedastablecladeinthephylogenetictree.TheseresultsindicatethepossibilityofinterspeciesandintraspeciesdiscriminationofPorphyrausingthe18SrDNAsequences.