By WWII, scientists had already begun looking at alternative gelling substances for routine use in bacteriology, but concluded that agar was still better as it is both firmer and easier to handle. Today, some specialized microbiology applications use the colloid carrageenan (extracted from red seaweed Chondrus crispus, or “Irish Moss”), a more transparent and less auto-fluorescent alternative to agar (agar emits its own background fluorescence when excited by light). However, for routine bacteriological use, carrageenan is more difficult to dissolve, requires higher concentrations, can degrade at high temperatures, and forms weaker gels, which may result in puncturing its surface during the plating of cells.
The feature was first spotted by 9to5Google earlier this week, but it appears to be rolling out on a larger scale.
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当单一供应商占据了绝大多数份额时，下游 AI 模型跑得再快，大部分利润都会被“卖铲子的人”抽走。Meta 的“备胎转正”战略，本质上是在用海量的资本，强行砸出一个充分竞争的硬件市场。
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