Objective To study the influence of different DNA extraction methods combined different PCR cycle Numbers on STR analysis from trace bloodstain on various carrier often seen in forensic area.

目的探讨常见载体上的微量血痕dna的提取方法、P CR循环次数对STR扩增成功率的影响。

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Conclusion: The optimum extraction process is achieved, which is stable, feasible, energy-saving, short production cycle, high extraction efficiency, suitable for industrialization.

结论：该工艺稳定、可行、节能，生产周期短，提取效率高，适于工业化生产。

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As the pump rotor continuous rotation, the above cycle of suction and exhaust process and the achievement of the purpose of the pump continuous extraction.

随着泵转子的连续旋转，以上吸气和排气过程循环进行，实现了泵的连续抽气目的。

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The BBC's diplomatic correspondent, Jonathan Marcus, says the exploitation of these mines underscores Tehran's determination to master and operate the full scope of the nuclear fuel cycle from uranium extraction, processing, enrichment and ultimately the manufacture of nuclear fuel.

BBC: Iran unveils uranium activities at Saghand and Ardakan