反应条件优化：将夏佛塔苷溶解在合适的溶剂中，加入适量的碱（如碳酸钾、碳酸钠等）作为催化剂，调节反应体系的 pH 值至碱性，一般 pH 值在 9 - 11 之间。然后，在搅拌条件下，缓慢滴加 FITC 的有机溶剂溶液，控制反应温度在 0 - 4℃左右，反应时间通常为 1 - 2 ...

The chilling 911 recording from the night four University of Idaho students were butchered in their off-campus home was made public this week — revealing the chaotic and terrifying aftermath of ...

Authorities have released the recording of a 911 call placed after the stabbings of four University of Idaho students in November 2022. Prior public records requests had been denied due to a gag ...

A 911 call placed hours after roommates Madison Mogen, Kaylee Goncalves and Xana Kernodle—as well as Kernodle's boyfriend Ethan Chapin—were killed in November 2022 offers insight into the ...

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It's been 20 years since the 9/11 attacks. Whether you were at the Towers, the Pentagon, or thousands of miles away, the events of 9/11 impacted every American on so many levels both ...

No one could comprehend it,' says Fred. 'I still can't. Right after it hit I staggered to my feet and called 911 (the U.S. equivalent of 999). They connected us to the fire department and I told ...