t3紫铜是比较纯净的一种铜,一般可近似认为是纯铜,导电性、塑性都较好,但强度、硬度较差一些,所以成为了更多众多厂家关注的焦点之一。<br>t3纯铜是普通纯铜中的一个牌号。&nbsp;&nbsp;&nbsp; t3纯铜有较好的导电、导热、耐蚀和加工性能,可以焊接和钎焊。但含降低导电、导热性杂质较多,含氧量较T2更高,更易引起&ldquo;氢病&rdquo;,不能在高温(如>370℃)还原性气氛中加工(退火、焊接等)和使用。&nbsp;&nbsp;&nbsp; 化学成份:&nbsp;&nbsp;&nbsp; 铜+银Cu+Ag:&ge;99.70&nbsp;&nbsp;&nbsp; 锡Sn :&le;0.05&nbsp;&nbsp;&nbsp; 铅Pb:&le;0.01&nbsp;&nbsp;&nbsp; 镍Ni:&le;0.2&nbsp;&nbsp;&nbsp; 铁Fe:&le;0.05&nbsp;&nbsp;&nbsp; 锑Sb :&le;0.005&nbsp;&nbsp;&nbsp; 硫S:&le;0.01&nbsp;&nbsp;&nbsp; 砷As :&le;0.01&nbsp;&nbsp;&nbsp; 铋Bi:&le;0.002&nbsp;&nbsp;&nbsp; 氧O:&le;0.1&nbsp;&nbsp;&nbsp; 注:&le;0.3(杂质)&nbsp;&nbsp;&nbsp; 力学性能:&nbsp;&nbsp;&nbsp; 抗拉强度 &sigma;b (MPa):&ge;205&nbsp;&nbsp;&nbsp; 伸长率 &delta;10 (%):&ge;30&nbsp;&nbsp;&nbsp; 注 :带材的室温拉伸力学性能&nbsp;&nbsp;&nbsp; 试样尺寸:厚度&ge;0.3&nbsp;&nbsp;&nbsp; 热处理规范:&nbsp;&nbsp;&nbsp; 热加工温度900~1050℃;&nbsp;&nbsp;&nbsp; 退火温度500~700℃;&nbsp;&nbsp;&nbsp; 冷作硬化铜的再结晶开始温度200~300℃。除t3纯铜外,中国纯铜加工成品按成分可分为:普通紫铜(T1、T2、T3、T4)、无氧铜(TU1、TU2和高纯、真空无氧铜)、脱氧铜(TUP、TUMn)、添加少量合金元素的特种铜(砷铜、碲铜、银铜)四类。&nb
Clinical Research on Real-time Quantitative PCR Detection of HPVYUAN Yuan,HUANG He(Liaoning Institute of Traditional Chinese Medicine,Shenyang 110034,China)ABSTRACT:OBJECTIVE to establish a method for the detection of human papilloma virus HPV 23 typing by re-al-time fluorescence quantitative PCR. METHODS DNA HPV was detected by real-time fluorescence quantitativePCR. RESULTS Among 60 patients,19 cases were detected with HPV infection. CONCLUSION The methodhas high sensitivity and specificity for detection of human papilloma virus by real-time fluorescent quantitative PCR,which can provide important clinical guidance for prevention,development and prognosis of cervical cancer.KEY WORDS: Real-time fluorescence quantitative PCR;