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Finance_High_Frequency
- High-frequency financial data are observations on financial variables taken daily or at a finer time scale, and are often irregularly spaced over time. Advances in computer technology and data recording and storage h
windows_xp_activation_hack_2007
- reader for rfid ,can read rfid taq from reader from stronglink SL500F or many other
PCR
- PCR基本原理算法 聚合酶链式反应是一种用于放大扩增特定的DNA片段的分子生物学技术,它可看作是生物体外的特殊DNA复制,PCR的最大特点,是能将微量的DNA大幅增加。因此,无论是化石中的古生物、历史人物的残骸,还是几十年前凶杀案中凶手所遗留的毛发、皮肤或血液,只要能分离出一丁点的DNA,就能用PCR加以放大,进行比对。这也是“微量证据”的威力之所在。由1983年美国Mullis首先提出设想,1985年由其发明了聚合酶链反应,即简易D