搜索结果: 1-15 共查到“理学 metal”相关记录237条 . 查询时间(0.125 秒)
Scanning the first images of a well-known early galaxy taken by NASA’s James Webb Space Telescope (JWST), Cornell astronomers were intrigued to see a blob of light near its outer edge.
Planckian metals have the potential to power high-temperature superconductors, quantum computers and a host of other next-generation technologies. However, these “strange” metals – in which electrical...
中国地质大学科学技术发展院吴亚飞(博士研究生)，李建威等 资源学院/GPMR国家重点实验室Geochimica et Cosmochimica Acta, Available online 3 November 2018. Metal remobilization and ore-fluid perturbation during episodic replacement of auriferous pyrite from an epizonal orogenic gold deposit
金硫化物；不同成分；性质流体；体系中；溶解度
2021/10/20
近日，中国地质大学资源学院和GPMR国家重点实验室李建威教授团队在国际地球化学顶级期刊Geochimica et Cosmochimica Acta (Nature Index)上发表了关于浅成造山型金矿床含金黄铁矿热液交代过程中金的再富集及成矿流体演化的研究成果。论文第一作者吴亚飞是中国地质大学与澳大利亚科廷大学联合培养的博士研究生，通讯作者为李建威教授。
3-D Geologic Map Leads To Precious Metal Discovery（图）
3-D Geologic Map Leads Precious Metal
2018/1/10
Using technology for 3-D electronic mapping originally developed by scientists working in the McMurdo Dry Valleys of Antarctica, NSF-funded researchers discovered one of the world's largest precious m...
We identify and characterize a new class of fingering instabilities in liquid metals; these instabilities are unexpected due to the large interfacial tension of metals. Electrochemical oxidation lower...
Although scientists have for decades been able to synthesize nanoparticles in the lab, the process is mostly trial and error, and how the formation actually takes place is obscure. However, a study re...
Effective Charger Transfer Distances in Mixed-Valence Transition Metal Complexes
Charger Transfer Distances Mixed-Valence Transition Metal Complexes
2016/5/23
Stark (electroabsorption) spectroscopy can provide quantitative information on the change in dipole moment and polarizability for an electronic transition. In the case of mixed-valence transitions, th...
Dipolar Character of Ligand-Centered Transitions in Transition Metal Tris-bipyridine Complexes
Stark spectra Tris-bipyridyl complexes UV spectroscopy Zn complexes
2016/5/23
The Stark spectra of bipyridine (bpy) and the metaltris(2,2'-bipyridine) complexes of Zn, Fe, Ru and Os have been measured in the ligand-centered region in the near UV. The results show that excitatio...
Size fractionation of nanoparticulate metal sulfides in oxic water of Lake Teganuma, Japan
metal sulfides nanoparticle size fractionation acid volatile sulfides Lake Teganuma
2017/4/10
Concentrations of acid volatile sulfides (AVS) as metal sulfides in three different size fractions (<30 nm, 30–200 nm,
>200 nm) at Lake Teganuma were measured using a nano-filtration followed by a pu...
Bioactive trace Metal distributions and Biogeochemical controls in the Southern ocean
Metal distributions Biogeochemical controls
2015/7/15
Extensive sampling in many regions of the Southern Ocean has
demonstrated that surface water concentrations of dissolved Fe are low enough
to limit phytoplankton growth. In contrast, there is curr...
Metal Dispersion Resulting from Mining activities in coastal environments: a pathways approach
Metal Dispersion Resulting coastal environment
2015/7/14
Acid rock drainage (ARD) and disposal of tailings that result from
mining activities impact coastal areas in many countries. The dispersion of metals
from mine sites that are both proximal and dis...
Novel anaerobic bioremediation strategies for organic and metal contaminants
Bioremediation sediments microorganism biological transformation of pollutants metallic organic compounds
2015/1/28
Bioremediation is becoming a widely accepted solution for cleaning up contaminated sediment, water, and soil. The associated microbial, chemical, and geologic principles are still in their relative in...
Influence of plant-associated microbial communities on heavy metal uptake by the aquatic plant Lemna minor
Aquatic plants bacteria heavy metal duckweed aquatic plants pollution of bacteria plants
2015/1/28
We present research aimed at determining how bacteria associated with aquatic plants influence phytoextraction of heavy metals. We focused on the aquatic plant Lemna minor and its response to cadmium ...
Use of phytoremediation and biochar to remediate heavy metal polluted soils: a review
phytoremediation biochar remediate heavy metal polluted soils a review
2015/1/6
Anthropogenic activities are resulting in an increase of the use and extraction of heavy metals. Heavy metals cannot be degraded and hence accumulate in the environment, having the potential to contam...
Analyses of Arabidopsis Yellow Stripe-Like (YSL) Family of Metal Transporters
Iron uptake Yellow stripe-like proteins
2015/1/5
Iron is one of the most important micronutrients used by living organisms. Iron is frequently a limiting nutrient for plant growth, and plants are a major source of iron for human nutrition. The most ...