The magnetic properties and structural phase transformations of Heusler alloys Ni2+ Mn1 Ga and Ni2 Mn1+ 2Ga1+ 2 were investigated. It was found that the martensitic transformation temperature increases and the Curie temperature decreases with decreasing Mn concentration in the Ni2+ Mn1 Ga system, but the magnetic properties decrease faster than those do in the Ni2 Mn1+ 2Ga1+ 2 system. It sugges...

Ethanol is an alternative fuel for direct alcohol fuel cells, in which the electrode materials are commonly based on Pt or Pd. Owing to the excellent promotion effect of Ni2 P that was found in methanol oxidation, we extended the catalyst system of Pt or Pd modified by Ni2 P in direct ethanol fuel cells. The Ni2 P-promoted catalysts were compared to commercial catalysts as well as to reference ...

The epithelial Na+ channel (ENaC) is modulated by various extracellular factors, including Na+, organic or inorganic cations, and serine proteases. To identify the effect of the divalent Ni2+ cation on ENaCs, we compared the Na+ permeability and amiloride kinetics of Xenopus ENaCs (xENaCs) and rat ENaCs (rENaCs) heterologously expressed in Xenopus oocytes. We found that the channel cloned from ...

Department of Chemistry, Texas A & M Un E-mail: [email protected] Department of Chemistry, Tamkang Univer † Electronic supplementary informati spectroscopic, additional electrochemic crystallographic data (CIF) from the s [Ni2–Fe2] , [Ni2–Fe] , and computation crystallographic data for the complexes [ deposited in the Cambridge Crystallog (CCDC 1045461), [Ni2–Fe2] 2+ (CCDC 104 For ESI and ...

l, Circular muscle strips of the guinea-pig gastric muscle produced spontaneous electrical activity in the forrn of slow waves. The slow wave amplitude, maxiinum rate of rise, duration, and frequency were 31 mV, 60mVsec'i, 4.3sec, and 4.3minmi on average, respectively. These parameters were not appreciably affected by 3#M nifedipine or nicardipine, even followihg rnernbrane depolarization with ...

This study examines the molecular basis for paralysis of ciliary motility by Ni2+. At concentrations above 0.1 mM, Ni2+ slowed and subsequently stopped swimming of living, axenically grown Paramecium tetraurelia. However, some cilia still beat in the presence of 0.1 mM Ni2+. When permeabilized and reactivated with 4 mM ATP at pCa greater than 7, cells resumed ciliary beat and swam forward at ap...

Herein we describe bimetallic di-nickel and di-copper complexes [Ni2(L)Br4] (1) and [Cu2(L)Br4(NCMe)2] (2) (L = (1E,1'E)-N,N'-(1,4-phenylenebis(methylene))bis(1-(6-(2,4,6-triisopropylphenyl)pyridin-2-yl)methanimine)) that bind oxalate intramolecularly to form [Ni2(L)Br2(C2O4)(NCMe)] (3) and [Cu2(L)Br2(C2O4)] (4). For the di-nickel complex 1, oxalate incorporation is accompanied by a significant...

This study was initiated to explore a method for producing higher photocatalytic performance in layered double hydroxides (LDHs) through the preparation of ultrathin nanosheets, which would generate surface area (SA). Herein, is detailed fabricating Ni2+-Al3+-LDHs with flower-like morphology assembled from an nanosheet (Ni2+-Al3+-LDHs-U) employing low temperature-reflux together surfactant. The...

Single fibers of the frog glossopharyngeal nerve respond to MgCl2 at concentrations exceeding 10 mM. NiCl2 at 1 mM enhanced the Mg2+ response. CaCl2 at 0.5-2 mM induced an inhibition of the Ni(2+)-enhanced response to Mg2+ ions. A quantitative explanation for these results is provided by the hypothesis that Ni2+ ions secondarily affect a magnesium receptor (designated X*Mg) that is responsible ...

We report oriented immobilization of proteins using the standard hexahistidine (His6)-Ni2+:NTA (nitrilotriacetic acid) methodology, which we systematically tuned to give control of surface coverage. Fluorescence microscopy and surface plasmon resonance measurements of self-assembled monolayers (SAMs) of red fluorescent proteins (TagRFP) showed that binding strength increased by 1 order of magni...