Results 61 to 70 of about 492,283 (201)
Optical and Infrared Observations of Radioactive Elements in Supernovae
, 2002 At late phases the powering of supernova light curves is often provided by the decay of radioactive elements synthesized in the explosions. This is unambiguously revealed when the light curve decline follows the half life time of the decaying elements ...
Blanton +23 more
core +2 more sources
Dichloridobis(thiourea-κS)nickel(II) [PDF]
Acta Crystallographica Section E Structure Reports Online, 2012 تم تصنيع مركب العنوان، [NiCl (2)(CH(4)N(2)S)(2)]، من ملح (داي أمينو- ميثيل- إيدين) كلوريد السلفونيوم- ثيو- يوريا (3/2) [Zouihri (2012b▶). Acta Cryst. E68, o257]. يتم تنسيق أيون Ni(II) في هندسة رباعية السطوح مشوهة بواسطة اثنين من جزيئات ثيو يوريا [Ni - S = 2.3079 (7) و 2.3177 (6) Å] واثنين من أنيون الكلوريد [Ni - Cl = 2.2516 (7) و 2.2726 (7) Å].
openaire +2 more sources
Diaquabis[3-(hydroxyimino)butanoato]nickel(II) [PDF]
Acta Crystallographica Section E Structure Reports Online, 2010 In the neutral, mononuclear title complex, [Ni(C(4)H(6)NO(3))(2)(H(2)O)(2)], the Ni atom lies on a crystallographic inversion centre within a distorted octa-hedral N(2)O(4) environment. Two trans-disposed anions of 3-hydroxy-imino-butanoic acid occupy four equatorial sites, coordinated by the deprotonated carboxyl-ate and protonated oxime groups and ...
Elżbieta Gumienna-Kontecka +4 more
openaire +3 more sources
The Fe/Ni ratio in ionized nebulae: clues on dust depletion patterns
, 2015 We perform a homogeneous analysis of the Fe/Ni abundance ratio in eight Galactic planetary nebulae (PNe) and three Galactic H II regions that include the Orion nebula, where we study four nebular zones and one shocked region.
Delgado-Inglada, Gloria +4 more
core +1 more source
Metil coenzima M redutase (MCR) e o fator 430 (F430)
Química Nova, 2006 This review presents studies on methyl coenzyme M reductase, the biological system Factor 430 (F430) and the use of nickel(II) complexes as structural and functional models. The ability of F430 and nickel(II) macrocycle complexes to mediate the reductive
Shirley Nakagaki +2 more
doaj +3 more sources
An NMR study on nickel binding to Cap43 protein [PDF]
, 2006 Cap43 has been reported to be specifically induced by nickel compounds in a variety of cell lines. Its function is not yet clear, but Cap43 protein does appear to be inducec in response to an increase in intracellular concentration of Ca2+, caused by ...
Medici, Serenella +2 more
core
Bis(diethylenetriamine)nickel(II) tetracyanonickelate(II)
Acta Crystallographica Section E Structure Reports Online, 2003 The structure determination of the title compound, [Ni(C4H13N3)2][Ni(CN)4], reveals the presence of a complex [Ni(dien)2]2+ cation (dien is diethylenetriamine) and a pair of crystallographically independent half-complex [Ni(CN)4]2− anions in the asymmetric unit. The Ni atoms of the anions lie on crystallographic inversion centres.
Iñaki Muga +3 more
openaire +1 more source
Nickel Recovery from Aqueous Solution Using Crab Shell Particles
Adsorption Science & Technology, 2005 The potential use of crab shell as a sorbent for the removal of nickel(II) ions from aqueous solution was investigated. The binding of nickel ions by crab shell was found to be affected significantly by pH, with the maximum sorption capacity being ...
Kuppusamy Vijayaraghavan +3 more
doaj +1 more source
Bis(cyanato-κN)tetrakis(2,6-dimethylpyrazine-κN4)nickel(II)
Acta Crystallographica Section E, 2012 Reaction of nickel(II) chloride with sodium cyanate and 2,6-dimethylpyrazine leads to single crystals of the title compound, [Ni(NCO)2(C6H8N2)4]. The nickel(II) cation is located about a centre of inversion and is octahedrally coordinated by two cyanate ...
Susanne Wöhlert +2 more
doaj +1 more source
Kinetic and Isotherm Studies for Nickel (II) Removal Using Novel Mesoparticle Graphene Sand Composite Synthesised From Sand and Arenga Palm Sugar [PDF]
, 2017 Nickel (II) is one of the most toxic contaminants recognised as a carcinogenic and mutagenic agent which needs complete removal from wastewater before disposal. In the present study, a novel adsorbent called mesoparticle graphene sand composite (MGSCaps)
Norul Wahida, Kamaruzaman +1 more
core +1 more source