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  • 简介:BasedonthebiologicalresourcessurveysinChina'sexclusiveeconomiczone,thepaperdiscussestheapplicationoftheGIStechnologyinevaluatingthemarineenvironmentalquality,establishesthebasicconceptandtechnologicalprocessforevaluatingtheenvironmentalqualityofthehabitatsofmarinelivingresources,proposesthekeypointsfortheestablishmentoftherelevantevaluationattributesdatabasebyapplyingtheGIStechnologyandanalysesseveraltypicalevaluationmodelsandthedatainterpolationmethodforthemodelinGIS.ResultsshowthatthecombinationoftheGIStechnologywiththequantitativeevaluationmodelcanbeappliedtothefastandaccurateevaluationofthemarineenvironmentalquality.

  • 标签: 海洋生物学 GIS 海洋地球物理勘探 海洋生物环境 数据库
  • 简介:AbstractAlthough considerable advances have been made in the field of assisted reproductive technology (ART), millions of couples still suffer from infertility and miscarriage. In a large number of cases, the etiology of these common reproductive failures remains unknown. However, the significance of autoantibodies in infertility and miscarriage has sparked extensive interest because of their pleiotropic roles in disrupting normal pregnancy. This review discusses the pleiotropic roles of a series of autoantibodies in infertility and miscarriage. A brief recapitulation of how the autoantibodies interfere with ART outcomes and treatments for this type of idiopathic infertility or miscarriage is also provided. While several disputes remain to be resolved, further studies employing better designs and larger sample sizes are required in view of the therapeutic potential of autoantibody inhibitors and the future of contraceptive vaccines.

  • 标签: Antiphospholipid Antibody In Vitro Fertilization Oocyte Sperm Zona Pellucida
  • 简介:AbstractAssisted reproductive technology (ART) has evolved rapidly over the last 40 years, offering hope to individuals and couples struggling with infertility. As technology continues to evolve, simulating a realistic female reproductive system environment has become a common goal for all types of ARTs, thereby reducing the impact of the artificial microenvironment on perinatal and offspring health. In this review, we provide a brief history of the development of each major ART and discuss the impact of ART on perinatal and offspring health. We also explore how the negative consequences of ART may be overcome and how its benefits can be maximized.

  • 标签: Assisted reproductive technology Perinatal outcomes Offspring health
  • 简介:Duetothedefectsofcurrentaircraftproductconfigurationtechnology,suchasthegapbetweenproductdesignandcustomers’requirements,thelowconfigurationefficiencyandetc.acustomer-orientedproductconfigurationsolutionofaircraftwasproposedinthispaper.Basingonadeepinvestigationintothemarketandthestructureoftheaircraft,thispaperproposedamethodofdividingandcreatingtheaircraftoptions,inwhichwesetupoptionalconstraintstomeetthedemandofconfigurationandthenoptimizedtheconstraintalgorithm.Thisworkcanhelptorealizetheoptimumassociationbetweentheaircraftoptionsandmodules.Basingonaresearchoncustomerdemand,Thepaperestablishedacustomerdemandmodelandamappingrelationshipwhichexistsbetweencustomerdemandandaircraftoptions,Itcanalsohelptomakeagreatcontributiontobuildcustomerpersonalizeddemandoftheaircraftconfigurationprocessandtheaircraftconfigurationlibrary.

  • 标签: 面向客户 配置技术 飞机 产品 个性化需求 客户要求
  • 简介:Atwistedfiberopticsensorbasedonintensitymodulationisdescribed.Theprincipleandstructureofthesensorandthechoiceofsteelstrandmodulesareintroduced.Thesensorisusedtodeterminethetensilestrainanddistribution.Theexperimentalresultsshowthatthechangeofthetransferringlightpowerhasanapproximatelinearrelationwiththeouterforce.Theintelligentsteelstrandswiththiskindofsensorwillhaveagoodapplicationinmonitoringtheconcretecrackanddeformationdistributioninhugestructuressuchasdamsandbridges.

  • 标签: 光纤传感器 应力 智能钢筋绞合线
  • 简介:1SignificanceofAllSolidStateLaser(DPL)TechnologyinFieldofLaserBecauseoftheadvantagesofhighconversionefficiency,goodbeamquality,smallsizeandlightweight,DPLbecomesthehotspotandpriorityofdevelopmentoflasertechnology.Itmaybethemainbodyoflaserinthefutureandreplacegaslaserandliquidlaser.Itisagreatrevolutionoflasertechnology.ThedevelopedcountriesvieindevelopingDPL.Chinahasachievedgreatsuccessinthisfield,butthereisawidegapbetweenthedevelopedcountriesandus.Weshouldattachgreatimportancetoit.

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  • 简介:Recently,aSm-GdcompoundheatinsulationceramicsmaterialcontractandanapplicationproductresearchcontractonREnano-catalystincatalyticburningenergysavingandenvironmentalprotectionweresignedbyTsinghuaUniversity,BaotouResearchInstituteofREandBaotouJingruiAdvancedMaterialsCo.,Ltd.Sm-GdcompoundheatinsulationceramicmaterialtechnologytransferprojectreliesontheexistingtechnologyofTsinghuaUniversityandutilizesabundantSm-GdbyproductofBaotoutoproducehighperforman...

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  • 简介:TheSteckelmill,alongestablishedsolutionfortheeconomicalproductionofrelativelysmallvolumesofhotrolledstrip,hasbeenrejuvenatedinrecentyearsbyarangeofnewapplications,boostedbytheneedofimprovingtheenergeticefficiencyoftherollingprocess.ThetraditionaladvantagesoftheSteckelmillintermsofflexibilityandreducedcapitalandoperationalcostsarenowenhancedbytechnologicaldevelopmentsthathavesignificantlyexpandeditsapplicationrangeintothecombinedproductionofstripandplateandimprovedtheproductquality.Theincreasedawarenessofthenecessityofasustainablegrowthinthesteelindustryhasstimulatedthedevelopmentofprocesssolutionswithanimprovedefficiencyintheuseofnaturalresources,lowercarbonemissionsandincreasedyield.ModernSteckelmillsareanadequateresponsetothetrendtowardslowenergystripandplateproduction,inparticularintheirplate-Steckelmillvariant.SiemensVAIhaveplayedakeyroleintheinnovationandtransformationoftheSteckelmillconcept,withanumberofrecentinstallations,presentedinthispaperfromthepointofviewoftheircontributiontothedevelopmentofgreenersteelrollingtechnologies.

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