简介:摘要:本文介绍了GJB 5000B与GJB 5000A对比的主要差异点,为企业完成GJB 5000B成熟度模型的体系建立和本地化工作提供思路。
简介:TheGJB2gene(connexin26)hasbeenshowntoberesponsibleforDFNB1andDFNA3.WescreenedtheGJB2genein488patientswithprelingualdeafness(Group1),124withpostlingualdeafness(Group2),and117normalhearingsubjects(Group3).Wefoundthat,inGroup1,65patients(13.32%)werehomozygotesorcompoundheterozygotesand51patients(10.45%)carriedasinglepathogenicmutation.The235delCmutationwasthemostfrequentmutation,accountingfor73.22%oftheknownpathogenicallelesinGroup1.NohomozygotesorcompoundheterozygotesweredetectedinGroup2orGroup3.Somepostlingualdeafpatients(2.42%)andnormalhearingsubjects(4.27%)were235delCcarriers.Ourpreliminarydataindicatethat235delC,themostfrequentmutationidentifiedinthisstudy,isamajorcauseforprelingualdeafness.
简介:摘要:本文介绍了GJB5000A项目利益相关方的管理,主要内容包括:利益相关方的定义、管理,并简单介绍成功的识别和管理好利益相关方对项目实施的益处。
简介:GJB151A/152A-97标准是军用电子、电气产品开展电磁兼容性测试的指导性文件,是开展相关电磁兼容性检测的基础。重点对依据GJB151A/152A-97标准进行电磁兼容性测试的共性问题和单项测试中的特殊问题进行了探讨,并结合实际的检测工作介绍了一些经验,也提出了一些问题,希望通过交流进一步提高测试能力。
简介:目的构建人野生型Cx30与红色荧光蛋白DsRed的融合蛋白表达载体,为揭示Cx30突变患者发病机制提供实验依据。方法用PCR法扩增GJB6基因,将PCR产物与T载体连接,用双切酶酶切pEASY-GJB6与载体DsRed-N1,连接回收后的片断,构建野生型Cx30编码序列与PDsRed2表达载体,测序鉴定序列正确性。将GJB6-DsRed用脂质体转染HEK293细胞,荧光显微镜观察表达的融合蛋白。结果GJB6-DsRed在HEK293细胞中高效表达,表达主要位于细胞膜中。结论成功构建了人野生型Cx30与红色荧光蛋白DsRed的融合蛋白表达载体,为进一步研究非综合征性聋的致聋机制奠定了基础。
简介:MutationsinGJB2genearethemostfrequentlyfoundmutationsinpatientswithnonsyndromichearingimpairment.However,thespectrumandprevalenceofmutationsinthisgenevaryamongdifferentethnicgroups.InChina,30,000infantsarebornwithcongenitalhearingimpairmentannually.Inordertoprovideappropriategenetictestingandcounselingtothefamilies,weinvestigatedthemolecularetiologyofnonsyndromicdeafnessin103unrelatedschoolchildrenattendingNantongSchoolfortheDeafandMuteinJiangsuProvince,China.ThecodingexonoftheGJB2genewasPCRamplifiedandsequenced.SixtytwoGJB2mutantalleleswereidentifiedin35.9%(37/103)ofthepatients.Twentyfivepatientscarriedtwopathogenicmutationsand12patientscarriedonemutantallele.The235delCwasthemostcommonmutationaccountingfor69.4%(43/62)ofGJB2mutantalleles.TheGJB2mutantallelesaccountedfor30.1%(62/206)ofallchromosomesresponsiblefornonsyndromichearingimpairment.Testingofthe3mostprevalentdeleteriousframeshiftmutationsinthiscohortdetected100%ofallGJB2mutantalleles.TheseresultsdemonstratethataneffectivegenetictestingofGJB2geneforpatientsandfamilieswithnonsyndromichearingimpairmentispossible.
简介:ObjectiveToinvestigateGJB2mutationprevalencesintheUigurandHanethnicgroupsinXinjiang,China,anddeterminetherelationshipbetweenethnicityandGJB2genemutations.MethodsInformationregardingethnicityofpatients'familieswasobtainedthroughmedicalrecordsreviewand/orpatientinterview.Bloodsampleswerecollectedfrom61Uigursand66Hansfordirectsequencingofthecodingregionandintron/exonboundariesoftheGBJ2gene.ResultsCarrierfrequencyofGJB2mutationswassimilarbetweentheUigurandHansubjects.TheGJB235delGmutationwasseenonlyinUigurpatientswithhearingloss,whereasthe235delCmutationwasidentifiedinbothUigurandHanpatients.TheallelicFrequencyof35delGmutationwas7.4%(9/122)inUigurdeafstudents,butnoneinHandeafstudents(0/128)andUigurcontrols(0/196).TheallelicfrequencyofGJB2235delCmutationinUigurandHandeafstudentswas5.7%and9.8%,andthatof299-300delATmutationwas0.8%and5.5%,respectively.V27IandE114Gwerethemostfrequenttypesofpolymorphism.ConclusionWefoundanAsian-specificGJB2diversityamongUigurs,andcomparableGJB2contributiontodeafnessinUigurandHanpatients.Thehighcarrierfrequencyof35delGinUigurs(11.5%)isprobablydefinedbygenedrift/foundereffectinaparticulargroup.EventhoughGJB2mutationshavebeenwidelyreportedintheliterature,thisdiscussionrepresentsthefirstreportofGJB2mutationsinChinesemulti-ethnicpopulations.
简介: 摘要:通过对企业组织过程进行深入研究,制定了以下具有可操作性的改进方案。首先,明确改进目标在提高软件研制生产率和软件研制质量方面的作用,并对目标进行细化。其次,建立和完善了组织过程改进库,包括研发流程、项目管理流程、质量管理流程等,确保改进工作有据可依。接着,将改进方案部署到实际应用中,通过ASIDE平台等技术手段实现快速集成和高效协作,并采取了有效措施保证部署工作的顺利推进。同时,通过建立和完善过程监控和评估机制,及时发现问题并作出调整,确保组织过程改进活动取得实效。这些改进方案的成功实施,不仅提高了企业软件研制生产率,还显著提升了软件研制质量。