Microbiologists have been growing microbes on agar plates for nearly 150 years, but agar’s discovery dates back to a happy accident in a mid-17th-century kitchen. Legend has it that on a cold winter day, a Japanese innkeeper cooked tokoroten soup, a Chinese agar seaweed recipe known in Japan for centuries. After the meal, the innkeeper discarded the leftovers outside and noticed the next morning that the sun had turned the defrosting jelly into a porous mass. Intrigued, the innkeeper was said to have boiled the substance again, reconstituting the jelly. Since this discovery, agar has become a staple in many Japanese desserts, from yokan to anmitsu.
Parsimonious deep neural network models can be used for prediction of visual neuron responses.
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Almost a year ago, OPEC+ brushed aside warnings of a global supply surplus and chose to increase oil production. History seems about to repeat.
2026-02-28 00:00:00:03014271610http://paper.people.com.cn/rmrb/pc/content/202602/28/content_30142716.htmlhttp://paper.people.com.cn/rmrb/pad/content/202602/28/content_30142716.html11921 彭清华会见老挝和平与团结委员会考察团
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