搜索结果: 151-165 共查到“国际动态 化学”相关记录583条 . 查询时间(1.561 秒)
Chemists at Princeton have developed a new chemical method to introduce valuable alkenes into simple hydrocarbon molecules, a transformation known as dehydrogenation, which is found in important proce...
欧盟研制成功高效紫外发光二极管
欧盟 高效 紫外发光 二极管
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2015/12/11
紫外（UV）辐射灯光通常应用于水净化处理行业和水产养殖场，直接杀死有害细菌和加速有机或无机污染物的化学反应中和过程。但目前市场上使用的紫外辐射灯光源含有汞（Mercury）元素成分，将对人体健康和生态环境造成新的风险。欧盟第七研发框架计划{FP7}中小企业主题提供110万欧元，总研发投入140万欧元，由欧盟4个成员国及联系国爱尔兰（总协调）、英国、捷克和挪威，4家创新型中小企业（SMEs）和4家科...
德国科学家发现巨磁电阻新材料磷化铌
德国科学家 巨磁电阻新材料 磷化铌
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2015/12/9
德国马普固体化学物理研究所和亥姆霍兹德累斯顿罗森多夫研究中心（HZDR）及荷兰拉德堡大学（Radboud）的科学家共同发现了一种具有超快速电子的新型巨磁电阻材料——磷化铌（NbP）。在研究该材料时，科研人员首次在单一材料上观察到电阻增加近万倍。该材料可用于生产电子元件，在信息技术领域具有巨大的应用潜力。
“Wouldn’t it be interesting if we could create stained-glass windows that changed colors at the flip of a switch?” said Christy Landes, associate professor of chemistry at Rice and the lead researcher...
Tiny octopods catalyze bright ideas
Tiny octopods catalyze
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2015/12/8
Nanoscale octopods that do double duty as catalysts and plasmonic sensors are lighting a path toward more efficient industrial processes, according to a Rice University scientist.Catalysts are su...
Though they’re not quite ready for boarding a lá “Fantastic Voyage,” nanoscale submarines created at Rice University are proving themselves seaworthy.Each of the single-molecule, 244-atom submersibles...
掺硼石墨烯可制成超高灵敏度气体传感器
硼石墨烯 超高灵敏度气体传感器
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2015/11/4
一个国际联合研究小组宣布，通过在石墨烯中加入硼原子的方式，他们开发出一种灵敏度极高的气体传感器。该装置能“嗅”出空气中浓度极低的有害气体，在人们还未察觉时发出警报。该研究还有助于改善锂离子电池和场效应晶体管的性能。用石墨烯制成的气体传感器已具有很高灵敏度，但科学家们并不想止步于此，希望通过在石墨烯中掺入其他元素的方式让其性能得到进一步提升。
新型材料有望带来自给自足能源系统（图）
新型材料 自给自足 能源系统
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2015/11/4
美国佛罗里达州立大学研究人员在最近一期《物理化学》杂志上发表论文称，他们开发出一种能模拟光合作用的人工材料，有望带来一种可持续的自给自足能源系统。可持续的自给自足能源系统应该对环境没有负面影响，不会产生二氧化碳和废水。但要建造这样一个系统，目前面临的难题是，如何设计出一种材料，既不会在分解水的过程中生锈，又能捕获能源，还要足够便宜以利于生产。
Solving slippery 80-year-old mystery,Tufts chemist discovers way to isolate single-crystal ice surfaces
slippery 80-year-old mystery Tufts chemist isolate single-crystal ice surfaces
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2015/11/12
A Tufts University chemist has discovered a way to select specific surfaces of single-crystal ice for study, a long-sought breakthrough that could help researchers answer essential questions about cli...
Scientists predict cool new phase of superionic ice
Scientists new phase superionic ice
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2015/11/12
Scientists have predicted a new phase of superionic ice, a special form of ice that could exist on Uranus and Neptune, in a theoretical study performed by a team of researchers at Princeton University...
Trouble in the air?
Trouble the air
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2015/11/12
Among the earliest warning signs of the 2014 West Virginia chemical spill were widespread reports of a peculiar odor: licorice.Residents associated this smell with danger. Indeed, smell can alert us t...
Novel Algorithm Simulates Water Evaporation at the Nanoscale
Water Evaporation Nanoscale
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2015/11/13
We are all familiar with boiling a pot of water—flame from a stove heats the base of a metal pot, the metal transfers the heat to the water, and the temperature goes up and up until the water boils. P...
2015年诺贝尔化学奖揭晓（图）
2015年 诺贝尔化学奖 DNA修复
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2015/10/8
北京时间10月7日下午5点45分，2015年诺贝尔化学奖揭晓，瑞典、美国、土耳其三位科学家TomasLindahl、PaulModrich和AzizSancar获奖。获奖理由是“DNA修复的机制研究”。
State-of-the-art ion cyclotron resonance magnet system offers researchers significantly more power and accuracy than ever before
State-of-the-art ion cyclotron resonance magnet system power accuracy
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2015/10/13
A new world record magnet used to perform complex chemical analysis is now available for users at the National High Magnetic Field Laboratory (National MagLab). The 21 tesla (T) ion cyclotron resonanc...
'Yellow chemistry' turns sulfur waste into plastics
Yellow chemistry sulfur waste plastics
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2015/9/9
While many scientists are hard at work on "green chemistry" projects that will benefit the environment, there are a handful of researchers at the University of Arizona who are starting a trend of thei...