搜索结果: 121-135 共查到“国际动态 化学”相关记录583条 . 查询时间(0.448 秒)
石墨烯新结构形似海绵比铁硬
石墨烯 结构材料 化学物质 电学属性
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2017/1/11
石墨烯在二维形式时被认为是最坚固的材料，但研究人员一直很难将其二维形式下的坚固强度，转化到有用的三维材料内。在最新研究中，研究团队通过施加热和压力，将石墨烯小薄片按压在一起，制造出一种复杂稳定类似珊瑚和硅藻类生物的结构。新结构名为“螺旋二十四面体”，其表面积相对体积来说很大，但非常坚固。
For the first time,scientists catch water molecules passing the proton baton
first time scientists water molecules proton baton
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2016/12/13
Water conducts electricity, but the process by which this familiar fluid passes along positive charges has puzzled scientists for decades.But in a paper published in the Dec. 2 issue of the ...
第117号化学元素正式获官方命名
117号元素 卤族元素 科学家 官方命名
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2016/12/3
美国橡树岭国家实验室（ORNL）官网11月30日发布新闻公告称，国际纯粹与应用化学联合会（IUPAC）正式批准将117号化学元素命名为“Tennessee”，以表彰位于田纳西州的橡树岭国家实验室、范德堡大学和田纳西大学在该元素发现中作出的贡献。其在元素周期表中的符号为Ts，从此117号元素不再只有代号。117号元素2010年首次被科学家发现，2015年12月30日，IUPAC和国际纯粹与应用物理联...
New Findings Boost Promise of Molybdenum Sulfide for Hydrogen Catalysis
Boost Promise Molybdenum Sulfide Hydrogen Catalysis
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2016/12/13
MoS2 presents a promising low-cost catalyst for the hydrogen evolution reaction (HER), but the understanding about its active sites has remained to be limited. Here we present an unambiguous study for...
A watershed moment in understanding how H2O conducts electricity
watershed moment H2O conducts electricity
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2016/12/13
Scientists have taken spectroscopic snapshots of nature’s most mysterious relay race: the passage of extra protons from one water molecule to another during conductivity.The finding represents a major...
2016年11月9日，2016年诺贝尔化学奖得主、荷兰格罗宁根大学Bernard L. Feringa教授访问北京大学化学学院和物理化学研究所，与学院相关专业教授与研究生开展了学术讨论，并在“物理化学论坛”上做了题为“Molecular switches and motors”的专题学术报告。
Scientists at Rice University and at the University of Graz, Austria, are driving three-wheeled, single-molecule “nanoroadsters” with light and, for the first time, seeing how they move.The Rice lab o...
近日，美国密歇根大学（University of Michigan）David H. Sherman教授应邀出席青岛能源所主办的“国际专家高层论坛”。David H. Sherman教授是美国密歇根大学药学院资深教授兼副院长，是国际公认的微生物次级代谢产物生物合成领域的领军人物之一。其研究领域主要包括生物有机化学、分子遗传学、P450酶学、新型药物和天然产物开发、合成化学和生物合成等方向。迄今为止...
After two-year decline,postdoc employment at federally funded labs increases
After two-year decline postdoc employment federally funded labs
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2016/11/4
The number of postdoctoral researchers employed at federally funded research and development centers (FFRDCs) rose to 2,696 in 2015, the first increase seen after two consecutive years of declines, ac...
New kind of supercapacitor made without carbon
New kind of supercapacitor without carbon
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2016/11/4
Energy storage devices called supercapacitors have become a hot area of research, in part because they can be charged rapidly and deliver intense bursts of power. However, all supercapacitors currentl...
IU scientists discover 'supramolecule' that could help reduce nuclear,agricultural waste
IU scientists supramolecule reduce nuclear agricultural waste
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2016/11/4
Indiana University researchers have reported the first definitive evidence for a new molecular structure with potential applications to the safe storage of nuclear waste and reduction of chemicals tha...
Chemistry Nobel Prize 2016
Chemistry Nobel Prize
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2016/10/10
Statement from National Science Foundation Director France C贸rdova regarding the news that NSF-funded chemist Fraser Stoddart of Northwestern University was one of an international group awarded the 2...
2016年诺贝尔化学奖揭晓（图）
2016年 诺贝尔化学奖 分子机器 分子系统
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2016/10/8
北京时间2016年10月5日下午5点45分，2016年诺贝尔化学奖揭晓，法国、美国、荷兰三位科学家Jean-Pierre Sauvage, J. Fraser Stoddart和Bernard L. Feringa获奖！获奖理由是“分子机器的设计与合成”。Jean-Pierre Sauvage，1944年出生于法国巴黎。1971年从法国斯特拉斯堡大学获得博士学位。目前为法国斯特拉斯堡大学荣誉退休教...
UCLA chemists report new insights about properties of matter at the nanoscale
UCLA chemists properties of matter nanoscale
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2016/9/29
CLA nanoscience researchers have determined that a fluid that behaves similarly to water in our day-to-day lives becomes as heavy as honey when trapped in a nanocage of a porous solid, offering new in...
Tiny transformers:Chemists create microscopic and malleable building blocks
Tiny transformers Chemists create microscopic malleable building blocks
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2016/8/1
Taking a page from Jonathan Swift’s “Gulliver’s Travels”, a team of scientists has created malleable and microscopic self-assembling particles that can serve as the next generation of building blocks ...