Agar was first introduced into the laboratory in 1881. Since then, microbiologists have depended on agar to create strong jellies. When microorganisms are streaked or plated onto this jellied surface and incubated, individual cells multiply into distinct colonies that scientists can easily observe, select, and propagate for further experiments. Many of the most important findings in biological research of the last 150 years or so — including the discovery of the CRISPR/Cas9 gene-editing tool — have been enabled by agar.4 Agarose, a derivative of agar, is also essential in molecular biology techniques like gel electrophoresis, where its porous gel matrix separates DNA fragments by size, enabling researchers to analyze and isolate specific genetic sequences.
Credits: This analysis of the 80386 draws on the microcode disassembly and silicon reverse engineering work of reenigne, gloriouscow, smartest blob, and Ken Shirriff.
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传音的骤然跌落，是存储芯片价格上涨最先冲击低端手机的直观表现。由于低端手机售价和利润空间有限，存储这一核心元器件的成本在整机物料成本中的占比上升，迅速侵蚀了厂商的盈利能力。不只是传音，我国市场上的低端手机也正面临前所未有的危机，1000元价位段上下的手机出货预测正被厂商大幅下调。
（本报记者朱隽、王浩、常钦、郁静娴、李晓晴、邓剑洋）