A method is described for confirming the identity of aflatoxins B1 and M1 in dairy products and liver extracts on a thin layer plate. Extracts and standards containing aflatoxins B1 and M1 are spotted on 10 x 10 cm plates, which are developed 2-dimensionally in mixtures of isopropanol-acetone-chloroform. After the first development, trifluoroacetic acid-hexane (1 + 4) is sprayed on that part of...

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...

We extend the notion of basic classes (for the Donaldson invariants) to 4-manifolds with b > 1 which are (potentially) not of simple type or satisfy b1 > 0. We also give a structure theorem for the Donaldson invariants of 4-manifolds with b > 1, b1 > 0 and of strong simple type.

a simple, acurate and rapid spectrophotometric method for determination of sulphite thiamine hydrochloride (B1) is described. This used proton transfer reaction between ion with xylenol orange at pH(7.6) to develop red colour adduct that maximum absorption 580 nm. was by bleaching the product (xylenol orange-sulphite) optimum conditions established sulphite. Beer’s law obeyed in concentration r...

We construct a compact formal 7-manifold with closed $G_2$-structure and first Betti number $b_1=1$, which does not admit any torsion-free $G_2$-structure, that is, it such the holonomy group of associated metric is subgroup $G_2$. also associative calibrated (hence volume-minimizing) 3-tori respect to this and, for each those 3-tori, we show 3-dimensional family non-trivial deformations. fibra...

BACKGROUND The aim of the present study was to evaluate the cardiovascular effects of the novel bradykinin B1 receptor antagonist BI-113823 following myocardial infarction (MI) and to determine whether B1 receptor blockade alters the cardiovascular effects of an angiotensin II type 1 (AT1) receptor antagonist after MI in rats. METHODOLOGY/PRINCIPAL FINDINGS Sprague Dawley rats were subjected ...

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...

Let N denote the set of positive integers. Every sequence B = (b0, b1, . . .) of numbers in N satisfying (1) 1 = b0 < b1 < . . . is a basis for N, as each n in N has a B-representation (2) n = c0b0 + c1b1 + . . .+ ckbk, where bk ≤ n < bk+1 and the coefficients ci are given by the division algorithm: (3) n = ckbk + rk, ck = [n/bk], 0 ≤ rk < bk and (4) ri = ci−1bi−1 + ri−1, ci−1 = [ri/bi−1], 0 ≤ ...

The rupture of atherosclerotic plaques leads to the exposure of matrix proteins, which in turn trigger arterial thrombosis, leading to stroke and cardiac infarction. Different platelet receptors sense the exposed matrix and induce platelet activation and secretion of prothrombotic molecules, leading to further platelet recruitment and finally thrombus formation. Integrins represent the major fa...