نتایج جستجو برای: سوپرآلیاژ ni span c 902

تعداد نتایج: 1141447  

2009
Xiu-Li Chang Bin Xie Chang-You Ji Yang-Guang Xiang Li-Ke Zou

The title complex, [Ni(C(15)H(10)BrClN(2)O(2))(C(5)H(5)N)], displays a square-planar coordination geometry around the Ni(II) ion, formed by the tridentate hydrazone and monodentate pyridine ligands, with the N atoms in a trans arrangement about the Ni center.

Abstract Recently alcohol fuel cells has been increased consideration because of their environmental friendliness, high energy conversion efficiency and low emissions. Many effort have been made to improve the electro-oxidation performance of alcohols such as methanol, ethanol and propanol. In this work, a new method for ethanol oxidation based on core–shell titanium dioxide / carbon nanofib...

2009
Yan Yang Dacheng Li Xuefeng Shi

The title trinuclear complex, [Ni(3)(C(9)H(7)N(2)O(4))(2)(C(5)H(5)N)(8)], possesses a crystallographically imposed center of symmetry occupied by one Ni(II) ion. Each of the three Ni(II) ions is coordinated by two O and four N atoms, respectively, in a distorted octa-hedral geometry. In the crystal, weak inter-molecular C-H⋯π inter-actions link the mol-ecules into ribbons propagating in the [10...

2009
Ramnath Balasubramanyan Frank Lin William W. Cohen Matthew Hurst Noah A. Smith

News interfaces are largely driven by recent information, even if many events are better interpreted in context of previous events. To address this problem, we consider the task of constructing an explicit representation of a “saga”—a longrunning series of related events. We define a timeline as a concrete representation of a “saga” and we propose two unsupervised methods for timeline construct...

Journal: :Arquitecno 2022

<span id="docs-internal-guid-529002fe-7fff-9959-c67f-aaff40a6b7b4"><span>La contaminación por dióxido de carbono (CO</span><span><span>2</span></span><span>) va en aumento y, Argentina, el sector la construcción es responsable del 40 %. Para disminuir impacto las emisiones, los edificios existentes requieren soluciones adaptación. El objetivo este...

2001
Lars Osberg Andrew Sharpe

This paper discusses the connection between social capital and trends in economic well-being. Although arguments for the growth-enhancing aspects of social capital are concerned with the impacts of social capital on well-being, in practice research has focussed on the relationship between social capital and trends in GDP per capita. However, there are severe disadvantages to using GDP per capit...

2018
Li Jiahong Kong Dejun

Cr-Ni coatings with the mass ratios of 17% Cr-83% Ni, 20% Cr-80% Ni and 24% Cr-76% Ni were fabricated on H13 hot work mould steel using a laser cladding (LC). The surface-interface morphologies, chemical elements, surface roughness and phase composition of the obtained Cr-Ni coatings were analysed using a scanning electron microscope (SEM), energy disperse spectroscopy (EDS), atomic force micro...

2008
Hong Shen Jing-Jing Nie Jian-Rong Su Duan-Jun Xu

The title compound, [Ni(2)(C(7)H(5)O(3))(4)(C(7)H(6)N(2))(4)][Ni(C(7)H(5)O(3))(2)(C(7)H(6)N(2))(2)]·6H(2)O, is a mononuclear/dinuclear nickel(II) cocrystal, the two mol-ecular species inter-acting through hydrogen bonds that involve the uncoordinated water mol-ecules. In the mononuclear species, the Ni(II) ion, located on an inversion center, is coordinated by two 1H-benzimidazole (bzim) ligand...

Journal: :Journal of the American Chemical Society 2002
Juventino J Garcia Nicole M Brunkan William D Jones

The nickel(0) fragment [(dippe)Ni] has been found to react with a variety of aromatic nitriles. Initial pi-coordination to the C=C and Ctbd1;N bonds of 2-cyanoquinoline is found to lead ultimately to C-CN oxidative addition. 3-Cyanoquinoline reacts similarly, although no eta(2)-CN complex is observed. 2-, 3-, And 4-cyanopyridines react initially to give eta(2)-nitrile complexes that then lead t...

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