Results 1 to 10 of about 3,247 (264)

Nonmetal Catalyzed Hydrogenation of Carbonyl Compounds [PDF]

Journal of the American Chemical Society, 2014
Solutions of the Lewis acid B(C6F5)3 in 1,4-dioxane are found to effectively catalyze the hydrogenation of a variety of ketones and aldehydes. These reactions, the first to allow entirely metal-free catalytic hydrogenation of carbonyl groups under relatively mild reaction conditions, are found to proceed via a "frustrated Lewis pair" mechanism in which
Scott, DJ, Fuchter, MJ, Ashley, AE
openaire   +5 more sources

A Theoretical Study of Fe Adsorbed on Pure and Nonmetal (N, F, P, S, Cl)-Doped Ti₃C₂O₂ for Electrocatalytic Nitrogen Reduction [PDF]

Nanomaterials, 2022
The possibility of using transition metal (TM)/MXene as a catalyst for the nitrogen reduction reaction (NRR) was studied by density functional theory, in which TM is an Fe atom, and MXene is pure Ti3C2O2 or Ti3C2O2−x doped with N/F/P/S/Cl. The adsorption
Heng Luo, Xiaoxu Wang, Chubin Wan, Lu Xie, Minhui Song, Ping Qian   +5 more
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Association of Metallic and Nonmetallic Elements with Fibrin Clot Properties and Ischemic Stroke [PDF]

Life
Objectives—Metallic elements and fibrin clot properties have been linked to stroke. We examined metallic and nonmetallic elements, fibrin clot lysis time (CLT), and maximum absorbance (Absmax) in relation to ischemic stroke.
Hieronim Jakubowski, Marta Sikora, Ewa Bretes, Joanna Perła-Kaján, Olga Utyro, Izabela Wojtasz, Radosław Kaźmierski, Marcin Frankowski, Anetta Zioła-Frankowska   +8 more
doaj   +2 more sources

Superlong‐Range Magnetic Coupling and Ferromagnetic Spin Freezing in Mechanoluminescent Semiconductor Eu:SrAl2O4 [PDF]

Advanced Science
Magnetic transition in nonmetals requires the presence of a considerable proportion of magnetic spins. A new type of ferromagnet named dilute ferromagnetism that contradicts this well‐established concept is proposed for semiconductors of ZnO etc. but has
Xu‐Guang Zheng, Ichihiro Yamauchi, Tomasz Galica, Eiji Nishibori, Tatsuya Kawae, Jumpei G. Nakamura, Akihiro Koda, Chao‐Nan Xu   +7 more
doaj   +2 more sources

Parametric study of lotus-type pore shape in solid subject to Henry's laws at interfaces [PDF]

Heliyon, 2023
Mechanisms of the length and maximum radius of lotus-type or single pores in ice or nonmetals satisfied by Henry's law at gas-liquid interfaces dissolved by a gas during unidirectional solidification are rigorously investigated and supported by a Table ...
B.Y. Lee, P.S. Wei
doaj   +2 more sources

First-principles study of properties nonmetals(C,N,S,P) doped anatase TiO₂

矿业科学学报, 2020
Anatase TiO2 semiconductor cell and TiO1.875X0.125(2×1×1) (X is C, N, S, P) with the replacement of O with C, N, S, P atom were produced by Materials studio software.Energy band structure, density of state(DOS) and optical properties were analysed by ...
Wang Guanyu, Guo Weijie, Liu Di, Xu Deping   +3 more
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Association between drinking water quality and mental health and the modifying role of diet: a prospective cohort study [PDF]

BMC Medicine
Background Environmental factors play an important role in developing mental disorders. This study aimed to investigate the associations of metal and nonmetal elements in drinking water with the risk of depression and anxiety and to assess whether diets ...
Shuduo Zhou, Mintao Su, Peng Shen, Zongming Yang, Pengfei Chai, Shengzhi Sun, Hongbo Lin, Liming Shui, Na Zhang, Ming Xu, Zhi-Jie Zheng, Jianbing Wang, Zhenyu Zhang, Kun Chen   +13 more
doaj   +2 more sources

Town scale response of water viral communities to town source surface water contamination with hydrochemical parameters [PDF]

E3S Web of Conferences, 2023
This study aims to explore the relationship between human enteric viruses found in town-scale surface water sources and certain chemical contaminants present in the water. From October 2010 to April 2012, water samples were collected and analyzed using a
Opere Wasonga Michael
doaj   +1 more source

Electronic, Magnetic, and Optical Performances of Non-Metals Doped Silicon Carbide

Frontiers in Chemistry, 2022
The configurations of nine different non-metals doped silicon carbide (NM-SiC) were structured by using the density functional theory (DFT). The magnetic, electronic, and optical properties of each NM-SiC are investigated at the most stable structure ...
Lin Zhang, Zhen Cui
doaj   +1 more source

Strike a Balance: Between Metals and Non-Metals, Metalloids as a Source of Anti-Infective Agents

Inorganics, 2021
Most of the commercially available anti-infective agents are organic molecules. In fact, though, during the pioneering times of modern medicine, at the beginning of the 20th century, several inorganic compounds of transition metals were used for ...
Tiziano Marzo, Diego La Mendola
doaj   +1 more source