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Industrial production of kanten (the Japanese name for agar, which translates as “cold weather” or “frozen sky”) began in Japan in the mid-19th century by natural freeze drying, a technique that simultaneously dehydrates and purifies the agar. Seaweed is first washed and boiled to extract the agar, after which the solution is filtered and placed in boxes or trays at room temperature to congeal. The jelly is then cut into slabs called namaten, which can be further processed into noodle-like strips by pushing the slabs through a press. These noodles are finally spread out in layers onto reed mats and exposed to the sun and freezing temperatures for several weeks to yield purified agar. Although this traditional way of producing kanten is disappearing, even today’s industrial-scale manufacturing of agar relies on repeated cycles of boiling, freezing, and thawing.
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Mr Duffy called for proposals from commercial companies to build a reactor that could generate at least 100 kilowatts of power.，推荐阅读WPS官方版本下载获取更多信息
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メニュー閉じるニュース新着・注目社会政治経済気象・災害国際科学・文化スポーツ暮らし深掘り地域動画・番組閉じるエプスタイン氏問題 クリントン氏「犯罪行為知らなかった」2026年2月28日午前6時17分(2026年2月28日午後0時16分更新)シェアするエプスタイン文書アメリカで性的虐待などの罪で起訴され、その後、死亡した富豪、エプスタイン氏について、クリントン元大統領が議会の求めに応じて証言し「エプスタイン氏の犯罪行為をまったく知らなかった」と述べました。。夫子对此有专业解读