Excessive accumulation of nickel (Ni) can be toxic to plants. In Arabidopsis thaliana, the Fe²⁺ transporter, iron (Fe)-regulated transporter1 (IRT1), mediates Fe uptake and also implicates in Ni²⁺ uptake at roots; however, the underlying mechanism of Ni²⁺ uptake and accumulation remains unelucidated. In the present study, we found that zinc (Zn) deficient conditions resulted in increased accumu...

was also isolated and structurally characterized. In the absence of alkaline cations during the synthesis, a mixed salt associating [Ni(S2O4)2] 1 with Ni was isolated, and formulated as (Ni,H2O)[Ni(S2O4)2]2, with the Ni 2+ cation weakly bonded to two crown ether moieties. The salt exhibits an unprecedented solid state association with extremely short S S intermolecular contacts [3.332(2) Å], le...

Brush border membrane vesicles (BBMVs) were prepared from the kidneys of rainbow trout exposed acutely (72 h; 13,380 microg Ni L(-1)), chronically (11 months; 289 microg Ni L(-1)), or chronically and acutely, to waterborne nickel (Ni). Uptake of 63Ni into renal BBMVs was temperature-dependent and fitted a two component kinetic model composed of a saturable, Michaelis-Menten component prominent ...

A variation of the relative content of (Fe+Ni) versus Ni may be responsible for the observed scatter of Type Ia Supernovae (SNe Ia) about a mean relation between their intrinsic brightness and the shape of their light curve. Synthetic light curves are computed of parametrised Chandrasekhar-mass explosion models of constant kinetic energy, where the ejecta are divided into an inner NSE zone, com...

Ni-, Cu-, and Fe-loaded acidic and basic Y zeolites were synthesized, and their catalytic properties for oxidative dehydrogenation of ethane (ODHE) to ethylene were characterized. Acidic Ni-loaded Y zeolite exhibits an ethylene productivity of up to 1:08 gC2H4 g 1 cat h 1 with a selectivity of 75%. Acidic Cuand Fe-loaded Y zeolites have an ethylene productivity of up to 0:37 gC2H4 g 1 cat h 1 a...

Let {S′Ni | i ∈ IN} represent a set of consequence operators defined on a language Λ, where each member of {S′Ni | i ∈ IN} corresponds to a science-community physical theory and each Ni is a S′Nj -system for each j ∈ IN. It is shown that there exists a hyperfinite ultralogic U ∈ ∗Cf defined on all internal subsets of Λ such that U 6 = U, and, for each i, j ∈ IN, S Ni ( ∗Nj) = U( ∗Nj). For each ...

The Ramsey number for a graph G versus a graph H, denoted by R(G, H), is the smallest positive integer n such that for any graph F of order n, either F contains G as a subgraph or F contains H as a subgraph. In this paper, we investigate the Ramsey numbers for union of trees versus small cycle and small wheel. We show that if ni is odd and 2ni+1 ≥ ni for every i, then R( Sk i=1 Tni , W4) = R(Tn...

The ternary Ni–P–W alloy coating was fabricated by RF magnetron sputtering technique with dual targets of Ni–P/Cu and pure W. Electroplating Ni–P process was introduced to obtain the NiP compound target with extra-high phosphorous contents around 21 at.%. The deposition rate achieved as high as 20 Am/h after modification of the processing parameters. The Ni–P–W coating with a high P/Ni ratio of...

The title compound, Dy(2)Ni(7), adopts the β-Gd(2)Co(7)-type structure type. The asymmetric unit contains two Dy sites (both site symmetry 3m) and five Ni sites (site symmetries .m, .2/m and -3m, and two 3m). The four different Ni coordination polyhedra are Frank-Kasper icosa-hedra formed by five Dy and seven Ni atoms, four Dy and eight Ni, three Dy and nine Ni, and six Dy and six Ni atoms, res...

In rainbow trout (Oncorhynchus mykiss), following chronic (42 day) exposure to both 384 microg Ni l(-1) and 2034 microg Ni l(-1), Ni accumulation was greatest in the gill, kidney and plasma, with the plasma as the main sink for Ni. Indeed, trapped plasma analysis revealed that extensive loading of Ni in the plasma accounted for substantial percentages of accumulated Ni in several tissues includ...