The minipreparation of plasmid DNA, or miniprep, is a small-scale isolation of plasmid DNA from bacteria. Two main approaches have been used for this isolation; the first and more traditional technique is often a variation on the original protocol by Birnboim and Doly (1979). The second uses a special silica matrix to bind DNA and then release it under certain conditions. The matrix is often in...

In this study, we introduce a zero-IF sub-harmonic mixer with high isolation in the 5GHz band using 0.18μm CMOS technology. Placing an LC-Tank between the class AB stage and the mixer core improves the isolation between the LO and RF ports. The measured isolation is obtained with a 48 dB between LO and RF ports; and a 9.5dB conversion gain is acquired while consuming 7mA at 2.5V supply voltage....

Fuji Electric has developed processes to fabricate ICs. The process satisfies demands for a display driver IC of up to about 100V for a liquid crystal display (LCD), plasma display panel (PDP) and vacuum fluorescent display (VFD). The power control IC has up to about 40V of high voltage and high current analog signal control. The ICs are fabricated using the CMOS (complementary MOS) oxide isola...

With the rapid development of information technology, the secrutiy problems of information systems are being paid more and more attention, so the Chinese government is carrying out information security classified protection policy in the whole country. Considering computer application systems are the key componets for information system, this paper analyzes the typical security problems in comp...