搜索优化
English
搜索
Copilot
图片
视频
地图
资讯
购物
更多
航班
旅游
酒店
房地产
笔记本
Top stories
Sports
U.S.
Local
World
Science
Technology
Entertainment
Business
More
Politics
过去 30 天
时间不限
过去 1 小时
过去 24 小时
过去 7 天
按时间排序
按相关度排序
1 天
on MSN
NASA’s new findings on Mars reveal critical evidence of the planet’s history
NASA's Perseverance rover has unearthed a compelling clue in the hunt for past Martian life. A rock sample dubbed "Cheyava ...
Science Daily
1 天
A method for efficient synthesis of anti-cancer drugs
Emmons (HWE) reaction is commonly used in organic chemistry to synthesize conjugated aldehydes. However, traditional HWE reaction methods sometimes have inconsistent (E)- and (Z)-selectivity, and ...
C&EN
1 天
Alkyl inductive effects: Confusion in textbooks
But on closer inspection, this interpretation is counter-intuitive. Carbon is slightly more electronegative than hydrogen ...
1 天
Scientists achieve low-temperature, efficient degradation of 'forever chemicals'
A research team led by Prof. Kang Yanbiao from the University of Science and Technology of China (USTC) of the Chinese ...
2 天
Unlocking the Amazon’s Hidden Power to Shape Global Weather
Two groundbreaking studies, involving researchers from Goethe University Frankfurt, the Max Planck Institute for Chemistry, ...
AZoM on MSN
2 天
The Advantages of Using PTR-TOF Analyzers for CSS Applications
Use precise geolocation data and actively scan device characteristics for identification. This is done to store and access ...
Acsh.org
4 天
What's Scarier: Fentanyl, or Fentanyl Made By Mexican Sophomores?
A recent article in The New York Times described how Mexican cartels were recruiting college students to "cook" fentanyl, to ...
Everyday Health
4 天
What Is Christmas Tree Syndrome?
Christmas tree syndrome, also called Christmas tree allergy, can lead to symptoms of seasonal allergies, including sneezing, ...
News Medical
4 天
Breakthrough in HWE reaction offers pathway for anti-cancer drug development
The Horner–Wadsworth–Emmons (HWE) reaction is a fundamental reaction in organic chemistry, widely used to create conjugated carbonyl compounds.
5 天
A new method for efficient synthesis of anti-cancer drugs
The Wadsworth–Emmons (HWE) reaction is a fundamental reaction in organic chemistry, widely used to create conjugated carbonyl ...
earth
5 天
Rainforest emissions shape the climate and cloud formation
Plant emit an estimated 500 million tons of isoprene annually, and the Amazon rainforest is the source of 25 percent of these emissions.
一些您可能无法访问的结果已被隐去。
显示无法访问的结果
反馈