A partial least squares (PLS) calibration model was developed for the simultaneous spectrophotometricdetermination of Pb (ΙΙ), Cu (ΙΙ) and Ni (ΙΙ) using xylenol orange as a chromogenic reagent. The parameterscontrolling behavior of the system were investigated and optimum conditions were selected. The calibrationgraphs were linear in the ranges of 0.0–9.091, 0.0–2.719 and 0.0–2.381 ppm for lead...

The relation between the Kondo spin relaxation rate $ {\tau_{sK}}^{-1} and momentum {\tau_{eK}}^{-1} is explored by using nonlocal valves with submicron copper channels that contain dilute iron impurities. A linear established under varying temperatures. However, impurity concentrations, ${\tau_{sK}}^{-1}$ remains nearly constant despite variation of a factor 10. This surprising can be understo...

Let sk = 1 √ N (v1k, . . . , vNk) T , with {vik, i, k = 1, . . .} independent and identically distributed complex random variables. Write Sk = (s1, . . . , sk−1, sk+1, . . . , sK), Pk = diag(p1, . . . , pk−1, pk+1, . . . , pK), Rk = (SkPkS ∗ k + σ 2 I) and Akm = [sk,Rksk, . . . ,R m−1 k sk]. Define βkm = pks ∗ kAkm(A ∗ km ×RkAkm) −1 A ∗ kmsk, referred to as the signalto-interference ratio (SIR)...

Dagmar Markechová 1,* and Beloslav Riečan 2,3 1 Department of Mathematics, Faculty of Natural Sciences, Constantine the Philosopher University in Nitra, A. Hlinku 1, SK-949 01 Nitra, Slovakia 2 Department of Mathematics, Faculty of Natural Sciences, Matej Bel University, Tajovského 40, SK-974 01 Banská Bystrica, Slovakia; [email protected] 3 Mathematical Institute, Slovak Academy of Scienc...

Background: Resistin, a recently discovered adipocyte-secreting adipokine, may play critical role in modulating cancer pathogenesisestablish a new association between obesity and hepatocellular carcinoma (HCC) metastasis. The aim of this study was to investigate the effects of resistin on HCC adhesion to the endothelium, and the mechanism underlying these resistin effects. Methods: Human SK-Hep...

Let {Xn, n > 1} be a sequence of coordinatewise negatively associated random vectors taking values in a real separable Hilbert space with the kth partial sum Sk, k > 1. We provide conditions for the convergence of ∑∞ n=1 1 n P(max16k6n ‖Sk‖ > εn α) and ∑∞ n=1 logn n P(max16k6n ‖Sk‖ > εn α) for all ε > 0. The converses of these results are also discussed.

Both of the sphingosine kinase (SK) subtypes SK-1 and SK-2 catalyze the production of the bioactive lipid molecule sphingosine 1-phosphate (S1P). However, the subtype-specific cellular functions are largely unknown. In this study, we investigated the cellular function of SK-2 in primary mouse renal mesangial cells (mMC) and embryonic fibroblasts (MEF) from wild-type C57BL/6 or SK-2 knockout (SK...

Spore killer strains, found in Neurospora, provided the first recognized example of meiotic drive in fungi. In the present study, natural populations throughout the world were examined for the presence of killer strains and strains that are resistant to killing. In N. intermedia, Sk-2 and Sk-3 are present but are rare. Killer strains were found at only five sites, in Borneo, Java, and Papua New...

1 Problem mathematical formulation Let us consider a time-varying system described by k, θ, Sk, Zk, where k is the time index, θ is a vector of parameters, Sk is a random vector corresponding to the time-varying state at time k (with the corresponding realization denoted by sk), and Zk is a random vector corresponding to the observation process at time k (with the corresponding realization deno...