简介:邯郸棉机有限公司生产的6MY168-17智能轧花机吸收了国内外轧花机的先进技术,结合公司多年的棉花机械设计、生产经验,并在6MY88-17轧花机成功开发的基础上,采用最新科技研制开发的新一代大型高效智能轧花机.它继承了6MY88-17轧花机的优点,同时对工作箱几何形状、相对位置等结构和技术参数进行了改进,更利于保持较高的产量和较好的皮棉质量,有利于控制轧花衣亏,降低能耗和用工成本,为棉花加工企业带来可观的经济效益和社会效益.该机具有技术先进、结构合理、造型层次分明、高产低耗、自动化程度高、安全可靠等特点,是新建轧花厂和老厂设备改造理想的选择.2002年该机已批量投放市场并得到用户的青睐.为使广大客户对该机更好地认识了解,现将该机的性能、特点及使用过程中应注意的事项介绍如下:
简介:In2016,theresearchanddevelopmentoflaserionsourcesweremainlycontributedtopromotetheperformanceoftheionsource,suchastoprolongthepulsedurationoftheionbeam,torealizetherepetitionrateoperationmodeoftheionsource.Inaddition,theproductionofhighlychargedmetallicionbeamsfromanECRionsourcewithlaserablationplasmainjectionwasalsoinvestigatedpreliminarily.Theconfinementoflaserproducedplasmawithasolenoidwasstudied.Forthispurpose,a1.5m-longsolenoidwasinstalledontheexpansionstageofthelaserionsource.
简介:Background:Accelerometershavebeensuggestedtoprovideadditionalinformationduringthe6-minwalktestwhichmaybeusefulinevaluatingchangesinfunctionalexercisecapacity.TheaimofthestudywastoidentifywhethertheadditionalinformationmeasuredbytheMyWellnessKey~(TM)(MWK)accelerometerduringatreadmill6-minwalktest(t-6MWT)wasrelatedtocurrentlyusedoutcomemeasures.Methods:Fifteenparticipants(9males,6females)performedaself-pacedt-6MWT.RespiratorygasanalysisandwalkingdistanceweremeasuredwhilstwearingtheMWK.Results:Asignificantcorrelationwasestablishedbetweenactivitycountsand6-minwalkdistance(6MWD)(r=-0.847,p<0.001)yetnot6-minwalkwork(6MWW)(r=-0.337,p=0.220).EnergyexpenditureestimatedbytheMWKwasstronglycorrelatedto6MWW(r=0.938,p<0.001)butnot6MWD(r=0.477,p=0.072).TheMWKsignificantlyunderestimatedenergyexpenditure(36.73,CI=33.9-39.7kcal)comparedtogasanalysis(54.35,CI=46.2-61.4kcal)demonstratingpooragreementbetweenthetwoanalyses(Bias=-17.61kcal,Limitsofagreement=-37.4,t2.2kcal).Measurementoftimespentundertakinglight,moderate,andvigorousphysicalactivitywasnotsignificantlydifferent(p>0.05)betweentheMWKandgasanalysis.Conclusion:EstimatedenergyexpenditureprovidedbytheMWKwasstronglycorrelatedto6MWW;however,MWKunderestimatedenergyexpenditureasmeasuredbygasanalysis.TheMWKmayprovideoutcomedatathatsupplementthosecurrentlyprovidedbythe6MWDforfunctionalcapacityassessmentduringthet-6MWT.
简介:摘要目的分析17α-羟化酶/17,20碳链裂解酶缺陷症(17OHD)的临床及CYP17A1基因突变特征。方法收集2014年3月至2019年12月首都儿科研究所附属儿童医院内分泌科收治的6例17OHD患儿的临床资料、实验室检查结果、CYP17A1基因突变情况,统计同期所有先天性肾上腺皮质增生症(CAH)的类型及数量。总结17OHD的临床特征及发病比例。结果6例患儿来自5个家庭,年龄1岁6个月~15岁,其中46,XX 2例,46,XY 4例;社会性别均为女性。临床表现中高血压3例(50.0%),低血钾4例(66.7%),阴唇包块1例(16.7%)。46,XY者性腺发育为睾丸;46,XX者子宫卵巢发育不良。实验室检查:8 AM皮质醇降低,为0.62~5.93 mg/L;促皮质素(ACTH)升高5例,为84~271 ng/L,1例ACTH正常(58 ng/L)的患儿行ACTH激发试验后皮质醇峰值仅为1.75 mg/L;6例均孕酮升高而17羟孕酮低下;睾酮、雌二醇减低,黄体生成素(LH)、卵泡刺激素(FSH)升高。肾上腺CT均示轻度增生。在114例同期诊断CAH患儿中,17OHD占5.3%,发病率居第2位。CYP17A1基因突变分析显示2例患儿p.Y329fs (c.985_987delTACinsAA)纯合突变;2例同胞患儿为p.Y329fs及外显子1-7缺失的复合杂合突变;1例患儿为p.Y329fs及p.R416C(c.1246C>T)的复合杂合突变;1例患儿p.L465P (c.1394T>C)纯合突变。p.L465P (c.1394T>C)首次见于中国人群。结论在CAH中,17OHD并不少见,对于女性外观的儿童低钾血症、高血压及性腺功能低下者警惕17OHD存在。p.Y329fs为中国儿童17OHD热点突变;p.L465P (c.1394T>C)为中国人群新发突变,其丰富了中国人CYP17A1基因突变谱系。