理学 >>> 数学 信息科学与系统科学 物理学 化学 天文学 地球科学总论 大气科学 地球物理学 地理学 地质学 水文学 海洋科学 生物学 科学技术史
搜索结果: 1-15 共查到理学 lead相关记录92条 . 查询时间(0.109 秒)
Like the transistors in a classical computer, superconducting qubits are the building blocks of a quantum computer. While engineers have been able to shrink transistors to nanometer scales, however, s...
Have you ever thought about not voting because your preferred candidate’s victory seems assured? New Cornell research uses mathematical modeling to show that type of thinking can have the opposite eff...
Researchers led by City College of New York physicist Pouyan Ghaemi report the development of a quantum algorithm with the potential to study a class of many-electron quantum systems using q...
As humans continue to send large quantities of carbon into the atmosphere, much of that carbon is absorbed by the oceans. Now researchers from the University of Connecticut and other institu...
近日,中国地质大学地球科学学院刘勇胜教授团队在国际地学领域顶级期刊《Geology》发表了题为《浅部克拉通地幔存在太古代高放射性成因铅》的学术论文,阐释了地幔高非放射性成因铅的起源及相应的深部地球动力学过程,建立了早元古代大氧化事件(大约23~24亿年)与地球铅同位素组成之间的重要联系。论文通讯作者为刘勇胜教授,论文第一作者为张军波博士。 自然界中铅(Pb)以四种稳定同位素存在,其中仅一种为非放...
Researchers at the Scripps Institution of Oceanography and Jacobs School of Engineering at the University of California, San Diego and their colleagues have designed 3D printed, coral-inspir...
Plant-derived chemicals called cardenolides have long been used to treat heart disease and have shown potential as cancer therapies. But the compounds are toxic, making it difficult for doctors to pre...
Walking on Caltech's campus, engineer Chris Roh happened to see a bee stuck in the water of Millikan Pond. Although it was a common sight, it led Roh and his colleague Mory Gharib to a discovery about...
New NSF-funded research reveals how two penguin species, the gentoo and the chinstrap, have dealt with more than a century of human impacts in Antarctica, and why some species are winners and others a...
Global climate change could cause Africa's Lake Victoria, the world's largest tropical lake and source of the Nile River, to dry up in the next 500 years, according to new NSF-funded findings by a tea...
A day is the time for Earth to make one complete rotation on its axis, and a year is one revolution around the Sun -- reminders that basic units of time and periods on Earth are intimately linked to o...
New research compares the growth rates of corals in the Belize Mesoamerican Barrier Reef System, the world's second-largest reef system. Over the past decade, the growth rate of corals living closer t...
The large Gacun silver–lead–zinc–copper deposit in Sichuan Province is one of the largest volcanogenic massive sulfide (VMS) deposits in China. The deposit consists of western and central ore bodies, ...
Organisms in nature adapt and evolve in complex environments. For example, when subjected to changes in nutrients, antibiotics, and predation, microbes in the wild face the challenge of adapting multi...
Scientists have determined unexpected characteristics of a key protein linked to blood pressure control and to nerve growth, pain control and heart tissue regeneration. The findings, published April 5...

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...