搜索结果: 91-105 共查到“国际动态 化学”相关记录583条 . 查询时间(0.527 秒)
Uchicago Scientists Craft World’s Tiniest Interlinking Chains（图）
Uchicago Scientists Craft World Tiniest Interlinking Chains
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2017/12/19
For decades, scientists have been trying to make a true molecular chain: a repeated set of tiny rings interlocked together. In a study in Science published online Nov. 30, University of Chicago resear...
Researchers Inadvertently Boost Surface Area of Nickel Nanoparticles for Catalysis（图）
Researchers Boost Surface Area Nickel Nanoparticles Catalysis
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2017/12/18
Ni nanoparticles (NPs) catalyze many chemical reactions, in which they can become contaminated or agglomerate, resulting in poorer performance. We report deposition of silica (SiO2) onto Ni NPs from t...
A quantum spin liquid（图）
quantum spin liquid
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2017/11/23
A team led by Assistant Professor of Physics Fazel Tafti has created an elusive honeycomb-structured material capable of frustrating the magnetic properties within it in order to produce a chemical en...
The Nobel Assembly has awarded the 2017 Nobel Prize in Chemistry to Jacques Dubochet of the University of Lausanne, Switzerland, Joachim Frank of Columbia University and Richard Henderson of MRC Labor...
俄罗斯采用“绿色化学”从白桦树皮中提取药用原料
俄罗斯 绿色化学 白桦树皮 药用原料
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2017/9/18
俄罗斯科学院西伯利亚分院有机化学研究所采用“绿色化学”技术研发出从白桦树皮提取白桦脂醇的新型工艺方法，所研发的技术具有生态性、节能性、产品纯度高的特点。相应成果刊登在《西伯利亚学报》上。就其工艺原理，所研发的工艺技术为萃取方法，但其萃取剂不是传统工艺方法所采用的酒精，而是醋酸类“绿色萃取液”。萃取液采用可再生原料制备，具有成本低廉、无毒性、可生物降解的特点，而工艺过程则具有低能耗及萃取液可回收再利...
In Step Toward ‘Controlling Chemistry,’Physicists Create A New Type Of Molecule,Atom By Atom（图）
Controlling Chemistry Physicists Create A New Type Of Molecule Atom By Atom
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2017/9/20
UCLA physicists have pioneered a method for creating a unique new molecule that could eventually have applications in medicine, food science and other fields. Their research, which also shows how chem...
BYU researchers have created a miniaturized, portable version of a tool now capable of analyzing Mars’ atmosphere — and that’s just one of its myriad possible uses.For decades mass spectrometers have ...
Researchers Set New Bar For Water-Splitting,CO2-Splitting Techniques（图）
Researchers New Bar Water-Splitting CO2-Splitting Techniques
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2017/9/19
We report iron-containing mixed-oxide nanocomposites as highly effective redox materials for thermochemical CO2-splitting and methane partial oxidation in a cyclic redox scheme, where methane was intr...
Spray-on Electric Rainbows:Making Safer Electrochromic Inks（图）
spray-on electric rainbows making safer electrochromic inks
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2017/9/5
Anyone who has a rear-view mirror that automatically dims blue in reaction to annoying high-beam headlights glaring from behind has seen an electrochromic film in action.Now, chemists at the Georgia I...
“Fizzy” soda water could be key in clean and sustainable manufacture of “flat” wonder material:graphene（图）
Fizzy soda water clean sustainable manufacture flat wonder material graphene
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2017/9/5
Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign h...
Handheld spectral analyzer turns smartphone into diagnostic tool（图）
Handheld spectral analyzer smartphone diagnostic tool
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2017/9/5
Researchers at the University of Illinois at Urbana-Champaign have developed technology that enables a smartphone to perform lab-grade medical diagnostic tests that typically require large, expensive ...
Need graphene?Grab a saw（图）
graphene Grab a saw
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2017/9/1
Rice University scientists have made wood into an electrical conductor by turning its surface into graphene.Rice chemist James Tour and his colleagues used a laser to blacken a thin film pattern onto ...
New approach improves ability to predict metals’ reactions with water
metals reactions water
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2017/7/21
The wide reach of corrosion, a multitrillion-dollar global problem, may someday be narrowed considerably thanks to a new, better approach to predict how metals react with water.Researchers at Oregon S...
Electrolytes Made from Liquefied Gas Enable Batteries to Run at Ultra-low Temperatures
Electrolytes Liquefied Gas Batteries to Run Ultra-low Temperatures
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2017/7/21
Engineers at the University of California San Diego have developed a breakthrough in electrolyte chemistry that enables lithium batteries to run at temperatures as low as -60 degrees Celsius with exce...
New chemical method could revolutionize graphene
New chemical method revolutionize graphene
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2017/7/21
University of Illinois at Chicago scientists have discovered a new chemical method that enables graphene to be incorporated into a wide range of applications while maintaining its ultra-fast electroni...