简介:Wedemonstratelow-losshydrogenatedamorphoussilicon(a-Si:H)waveguidesbyhot-wirechemicalvapordeposition(HWCVD).Theeffectofhydrogenationina-SiatdifferentdepositiontemperatureshasbeeninvestigatedandanalyzedbyRamanspectroscopy.Weobtainedanopticalqualitya-Si:Hwaveguidedepositedat230°CthathasastrongRamanpeakshiftat480cm-1,peakwidth(fullwidthathalf-maximum)of68.9cm-1,andbondangledeviationof8.98°.Opticaltransmissionmeasurementshowsalowpropagationlossof0.8dB/cmatthe1550nmwavelength,whichisthefirst,toourknowledge,reportforaHWCVDa-Si:Hwaveguide.
简介:Inthispaper,anewmeasurmenttechniquefordeterminingthermalconductivityofsemitransparentmediainthetemperaturerange300-800Kisreported.TheexperimentalsetupisbasedonthesteppowerforcedtransienthotwiretechniqueItisassumedthattheradiativecontributiontotheheattransferprocessarisesfromemission,Notfromabsorption.Inthiscase,applicationofthe'thermalquadruples'methodallowsaverysimpleconstructionofanalyticalmodelsoftheexperimentalsetup.Theparametersensityvityanalysisdemonstratesthatthethermalconductivityofsemitransparentmeidiacanbedeterminedfromthehotwiretemperatureresponse,Theexperimentalresultsofakindofglassbetween300and800Karepresented.
简介:目的将评估可行性和由K电线和紧张乐队电线固定对待sternoclavicular关节脱臼的治疗学的效果,并且改进这种技术的安全和稳定性。这研究与平均数由9个盒子,6男性和3女性组成了的方法25年变老(范围,9-62年)。原因是在7种情况中的交通事故,掉在在1种情况中的1种情况和战斗里。到操作的从损害的持续时间是到7天的2个小时。有5左脱臼和4正确脱臼;8前面的脱臼和1以后的脱臼,包括一个与左olecranon骨折与左肩胛骨折和破裂结合了。用K电线和紧张乐队电线的开的减小和内部固定被执行对待脱臼。结果所有病人被跟随在上面为6~24个月,10个月平均。根据Rockwood手术后的sternoclavicular关节上的等级规模,8个盒子与13.88的一个平均分数完成了优秀结果,并且剩余的盒子与12的分数完成了好结果。解剖减小在所有情况中被获得。象严重感染没有如此的手术后的复杂并发症,对血容器和神经的损害,固定的失败,等等。病人们都对解剖减小和功能的恢复满意。K电线和紧张乐队电线固定的技术是保险箱的结论,简单,有效,不太侵略并且成功地在矫形外科被使用了。它在尽管它有一些劣势,对待sternoclavicular关节脱臼是有效的。
简介:selectingseveraltypicalDSS00Cr22Ni5Mo3N,00Cr21Ni2Mn5Nand00Cr25Ni7Mo4Nasresearchmaterials,hotductilitycharacteristicofDSSwasstudiedandmicrostructureevolutionduringhotcompressionwasobserved.TheresultsshowthattheoptimumhotductilitytemperaturerangeofDSSis1050~1200℃.00Cr25Ni7Mc4Nexhibitstheworsthotductilityand00Cr21Ni2Mn5Nhassimilarhotductilityto00Cr22Ni5Mo3N.Duringhotcompression,austeniteofDSSmainlyoccursdynamicrecovery,theferriteof00Cr22Ni5Mo3N,00Cr21Ni2Mn5Ncanperformdynamicrecoveryandrecrystallization,butonlydynamicrecoverycanbeobservedintheferriteof00Cr25Ni7Mo4N.