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.
Born in Egypt but raised in the United States, Michael attended Harvard University as an undergraduate and earned a law degree from Stanford. He began his career with a quick stint at Goldman Sachs as an associate in the communications, media, and entertainment investment banking group, before jumping into tech at Tellme Networks in 1999, a voice-recognition company that he helped run before it was acquired by Microsoft in 2007 for roughly $800 million.
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This article originally appeared on Engadget at https://www.engadget.com/mobile/smartphones/samsung-galaxy-s26-vs-s26-vs-s26-ultra-comparing-the-three-new-phones-181047172.html?src=rss
На Западе подчинили рой насекомых для разведки в интересах НАТО08:43
Tom Hanks, who played Lovell in the 1995 movie Apollo 13, called the astronaut one of those people "who dare, who dream, and who lead others to the places we would not go on our own".