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The reasons why certain domains evolve much slower than others is unclear. The notion that functionally more important genes evolve more slowly than less important genes is one of the few commonly believed principles of molecular evolution. The macro-domain (also known as the X domain) is an ancient, slowly evolving and highly conserved structural domain found in proteins throughout all of the kingdoms...
The growth of coarse grains of diamond was observed with graphite as carbon source and Fe80Ni20 alloy powder as catalyst at HPHT in a China-type SPD 6×1670T cubic high-pressure apparatus with highly exact control system. To synthesize coarse grains of diamond crystal with high quality, advanced indirect heat assembly, powder catalyst technology and catalyst with optimal granularity were used. Especially...
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