نتایج جستجو برای: ni nanopoarticles

تعداد نتایج: 52408  

2016
M. Becht J. Gallus M. Hunziker F. Atamny K.-H. Dahmen

The aim of this study was (i) to investigate alternatives to the very toxic Ni(C0)4, (ii) optimization of the parameters for Ni film growth, and (iii) characterization of the film morphology. The thermal behaviour of the precursors bis(dirnethylglyoximato)Ni(II), [Ni(dmg)2], bis(2,2,6,6-tetramethyl-3,5-heptandionato)Ni(II), [Ni(thd)2], N,N'-ethylenebis(2,4-pentandioniminoato)Ni(II), [Ni(enacac)...

2006
Fusheng Xu Hong Zhao Stephen D. Tse

Various morphologies of multi-walled carbon nanotubes (MWNTs) are grown catalytically on metalalloy probes in counterflow diffusion flames using methane as fuel. Carbon nanotube (CNT) properties and morphologies are investigated as functions of local gas-phase temperatures, C-related species concentrations (e.g. C2H2, CO), sampling positions, C2H2 adding to the fuel, and metal-alloy composition...

2011
Grace Wangge Olaf H Klungel Kit CB Roes Antonius de Boer Arno W Hoes Mirjam J Knol

Methods We searched in Pubmed and Cochrane-central-registerfor-controlled-trials for all NI RCTs of direct thrombin inhibitors (DTI) and direct inhibitors of factor Xa (DXAI) for prophylaxis of VTE. All NI trials had enoxaparin as their active comparator. Using the draft FDA guidelines for NI trials, we determined an NI margin, referred to as the reference NI margin, based on all published plac...

2009
Bing-Xin Liu Yan-Ping Yu Zen Cao Liang-Jun Zhang

The crystal structure of the title compound, [Ni(C(6)H(6)N(4)S(2))(H(2)O)(4)][Ni(C(7)H(3)NO(4))(2)]·3H(2)O, consists of Ni(II) complex cations, Ni(II) complex anions and lattice water mol-ecules. The Ni(II) ions in both the complex cation and anion assume a distorted octa-hedral coordination geometry. O-H⋯O, N-H⋯O and C-H⋯S hydrogen bonds occur in the crystal structure.

Journal: :Chemical communications 2002
Daniel J Mindiola Gregory L Hillhouse

The imido complex (dtbpe)Ni(N(2,6-(CHMe2)2C6H3)) reacts with CO and CNCH2Ph with addition at the Ni-N bond to give (dtbpe)Ni(C,N:eta 2-C(O)N(2,6-(CHMe2)2C6H3)) and (dtbpe)Ni(C,N:eta 2-C(NCH2Ph)N(2,6-(CHMe2)2C6H3)); both complexes react further with CO to liberate the isocyanate and carbodiimide ligands with formation of (dtbpe)Ni(CO)2.

ژورنال: :فرآیندهای نوین در مهندسی مواد 2015
محسن رضاقلی زاده اعظم حیذری احمد ساعتچی

در این تحقیق به بررسی تأثیر عملیات حرارتی بر ­روی مقاومت به سایش پوشش الکترولس دولایه کامپوزیتی ni-p/ni-b-b4c پرداخته شده­است. به این منظور، ابتدا پوشش الکترولس نیکل– فسفر با ضخامت 15 میکرون و سپس پوشش الکترولس ni-b-b4c با ضخامت مشابه ­روی سطح نمونه­هایی از جنس فولاد ck45 اعمال شد. جهت ارزیابی خواص پوشش دولایه ni-p/ni-b-b4c، پوشش های دولایه نیکل-فسفر/ نیکل- بور با ضخامت یکسان و تک لایه نیکل- بو...

2016
Ian S. McKay Jay A. Schwalbe Joshua J. Willis Arun Majumdar

Nickel–molybdenum (Ni–Mo) materials are widely used functional oxide catalysts for the hydrogen evolution reaction. In this work, we investigate the high activity of Ni–Mo by depositing size-controlled Ni nanocrystals (NCs) onto Mo substrates. We observe a synergistic increase in catalytic activity that does not scale with the Ni–Mo interface length. This evidence points to a bulk electronic in...

1997
G. J. Mankey K. Subramanian R. L. Stockbauer R. L. Kurtz

We find that the photoelectron angular distributions from the Fermi surface of a monolayer Ni film on Cu are identical to those from thick Ni films and single-crystal Ni(001), and agree well with theoretical predictions for bulk Ni. This bulklike behavior in the monolayer film is attributed to the short screening length of electrons in metals, the similarity of the Ni and Cu cores, and a hybrid...

Journal: :Chemical communications 2013
Bettina Horn Christian Limberg Christian Herwig Beatrice Braun

The β-diketiminato nickel(I) complex K2[L(tBu)Ni(I)(N2(2-))Ni(I)L(tBu)] reacts with CO2 via reductive disproportionation to form CO and CO3(2-) containing products, whereas after employment of the Ni(I) precursor [L(tBu)Ni(I)(N2)Ni(I)L(tBu)] reductive coupling of CO2 was observed giving an oxalate bridged dinickel(II) complex. The addition of KC8 to the carbonate and oxalate compounds formed le...

2017
Satoko YAMAOKA Kazuma OKADA Naoto ITO Kota OKADERA Hiromichi MITAKE Kento NAKAGAWA Makoto SUGIYAMA

Attenuated derivative rabies virus Ni-CE replicates in muscle cells less efficiently than does the parental pathogenic strain Nishigahara. To examine the mechanism underlying the less efficient replication of Ni-CE, we compared the activities of Ni-CE and Nishigahara phosphoproteins, viral interferon (IFN) antagonists, to suppress IFN-β promoter activity in muscle cells and we demonstrated a de...

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