学科分类
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5 个结果
  • 简介:TheTheGreat-WestDykewithalengthof6.7km,thelargestseawallinChina,wascompletedinJune,1994.Thispaperintroducesstructureoptionsofnibblemoundseawallonsoftfoundationandanewtypeofarmourblock-hexagonmultiholeblock(HMB)andanewmethodoftreatmentforsoftfoundationbyusingunderwaterexplosion.ConstructionpracticeofsomeprojectsinChinashowsthatbyusingthismethodgoodeffectoftreatmentandmarkedeconomicbenefitcanbeachievedbyusingthismethod.

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  • 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。

  • 标签: 海绵 共生体 生物活性 代谢物 生物化学
  • 简介:重建的向量pCANTAB5EE被插入包含了一个EcoRV识别序列进pCANTAB的34搁浅bpdouble的oligonucleotide获得5E。Whitespot症候群病毒(WSSV)染色体DNA被sonication碎裂主要在0的范围孤立碎片。8~2.0kb,当时,碎片与T4DNA聚合酶是钝结束的并且克隆5EE进pCANTAB的EcoRV地点。图书馆的主要recombinant克隆是随机的选择re-combinants的5.ColonyPCR显示出的3.0x10~inserts的尺寸是0.12~整个图书馆recombinant噬菌体感染了的1.77kb.AfterEscherichi--关口iHB2151房间,细胞外并且periplasmic摘录在PVDF膜上被扔执行点污点,usingpoly同种细胞的老鼠anti-VP24浆液,anti-WSV026浆液,anti-WSV063浆液,anti-WSV069浆液,anti-WSV112浆液,anti-WSV238浆液,anti-WSV303浆液和anti-VP26浆液结果证明显示图书馆能表示病毒的蛋白质。

  • 标签: 对虾 白斑综合症病毒 全基因组 噬菌体展示文库 WSSV
  • 简介:TheWei-LiuwatersupplyingsubmarinepipelineisatpresentthelongestoneofthekindinChina.Itisabout4kilometerslongfromWeihaiCitytoLiugongIslandinShandongprovince.Ittookonlyhalfayeartodesignandconstructit.Theprojectwasofahigheconomicefficiencyandsomepracticalexperienceswereachieved.Inthispaperageneralintroductiontothedesignandconstructionofthispipelineispresentedandsuchproblemsasthestabilityofthepipelineinverysoftclay,designofcurvedslideforlaunchingandestimationofdraggingforcesareexpounded.

  • 标签: SUBMARINE PIPELINE design LAYING method stability
  • 简介:ThewildPorphyrayezoensiscollectedfromtheQingdaocoastwasusedtoprepareprotoplastsbyenzymedigestion.Thepurelinewasconstructedbycultivatingtheprotoplasts.The18SrDNAoftheP.yezoensispurelinewasclonedandsequenced.Sequenceanalysiswasexecutedforthissequenceandother22sequencesretrievedfromGenBank.Aphylogenetictreewasconstructedusingtheneighbor-joiningmethod.Theresultsrevealedahighdiversityof18SrDNAsequencesingenusPorphyraandtheconsiderablevariationof18SrDNAsequencesindifferentstrainsofthesamespeciesP.yezoensisandP.tenera.Significantdifferenceof18SrDNAsequencewasobservedbetweenP.yezoensisfromQingdao,China,andthetwostrainsofP.yezoensisfromJapan,butthethreestrainsofP.yezoensisformedastablecladeinthephylogenetictree.TheseresultsindicatethepossibilityofinterspeciesandintraspeciesdiscriminationofPorphyrausingthe18SrDNAsequences.

  • 标签: DNA序列分析 种间区别 种内区别 海洋藻类