Temperature-sensitive (ts) mutants of vaccinia virus defective in the B1 kinase demonstrate a conditionally lethal defect in DNA synthesis. B1 is the prototypic member of a new family of protein kinases (vaccinia virus-related kinases, or VRK) that possess distinctive B1-like sequence features within their catalytic motifs (R. J. Nichols and P. Traktman, J. Biol. Chem., in press). Given the str...

Five experimental groups were used to evaluate the efficiency of sodium bentonite (BNT) and ascorbic acid (AA) in reducing the toxicity of aflatoxin B1 in ElSalam chicks (Egyptian local chicks) diets. A total number of 450 unsexed one-day old chicks were wing banded, weighted and randomly assigned to 5 groups of five replicates (18 chicks/replicate). The experimental groups were as follow: 1) b...

The type IV collagenases/gelatinases matrix metalloproteinase-2 (MMP-2) and MMP-9 play a variety of important roles in both physiological and pathological processes and are regulated by various growth factors, including transforming growth factor-b1 (TGF-b1), in several cell types. Previous studies have suggested that cellular control of one or both collagenases can occur through direct transcr...

Let [a, b] denote the integers between a and b inclusive and, for a finite subset X ⊆ Z, let diam (X) = max(X) − min(X). We write X <p Y provided max(X) < min(Y ). For a positive integer m, let f(m,m,m; 2) be the least integer N such that any 2-coloring ∆ : [1, N ] → {0, 1} has three monochromatic m-sets B1, B2, B3 ⊆ [1, N ] (not necessarily of the same color) with B1 <p B2 <p B3 and diam (B1) ...

In this study, perthiophosphonic acid anhydrides which are previously known (2,4-bis(3-methoxytolyl)-1,3-dithia-2,4-diphosphetane-2,4-disulfide ([(3-methoxytolyl)P(S)S)2], SAV-B1 reagent and 2,4-bis(ferrocenyl)-1,3,2,4-dithiadiphosphetane-2,4-disulfide [(ferrocenyl)P(S)S)2], FcLR, Ferrocenyl Lawesson's Reagent) react with alcohols to obtain new dithiophosphonic acids (3-methoxytolyl=(CH3)(OCH3)...

background premenstrual syndrome (pms) is a combination of physical, psychological and emotional symptoms that occur periodically before menstruation and disappear with the onset of menstruation. there are some therapeutic methods mostly according to the clinical trials that reduce the prevalence and intensity of symptoms of pms by unknown mechanisms. this study aimed to investigate the effects...

1.16. Again, I’ll only do the triangle inequality. Let x = (a1, . . . , an), y = (b1, . . . , bn), z = (c1, . . . , cn) be three points in Rn, then there is some integer j, 1 ≤ j ≤ n where the max occurs, so that d∞(x, y) = |aj − bj |. Hence, d∞(x, y) = |(aj−cj)+(cj−bj)| ≤ |aj−cj |+|cj−bj | But, |aj−cj | ≤ max{|a1− c1|, . . . , |an − cn|} = d∞(x, z), since it is one of the terms occurring in th...

Introduction: In the human brain, both white matter and gray matter contain significant amounts of bound water. Although the bound water is not directly seen in conventional MRI experiments, due to its very short T2, the effects of RF pulses on the bound water can influence the free water signal through proton exchange. This effect is known as magnetization transfer (MT) [1], and when MT effect...