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A new ganglioside antigen, termed Chol-1 alpha-b, recognized by cholinergic neuron-specific antibody, Chol-1 alpha, was isolated from bovine brain ganglioside mixture using Q-Sepharose. The yield was approximately 1.3 mg from 5 g of the total ganglioside. The chemical structure was characterized as a novel ganglioside by means of gas-liquid chromatography, a permethylation study, mild acid hydr...

Aim. To compare pars plana vitrectomy (PPV) with silicone tamponade or gas (Groups Ia and Ib) and a new modified Ando plombe equipped with a fiber optic light (Group II) for cases with macular hole retinal detachment (MHRD) in high myopic eyes (axial length > 26 mm). Methods. A prospective interventional randomized case series included 60 eyes (20 in each group). Successful outcome was consider...

We use a Ramsey-theoretic argument to obtain the first lower bounds for approximations over Zm by nonlinear polynomials: A degree-2 polynomial over Zm (m odd) must differ from the parity function on at least a 1=2 1=2(logn) (1) fraction of all points in the Boolean n-cube. A degree-O(1) polynomial over Zm (m odd) must differ from the parity function on at least a 1=2 o(1) fraction of all points...

For positive semidefinite matrices A and B, Ando and Zhan proved the inequalities |||f(A) + f(B)||| ≥ |||f(A + B)||| and |||g(A) + g(B)||| ≤ |||g(A + B)|||, for any unitarily invariant norm, and for any non-negative operator monotone f on [0,∞) with inverse function g. These inequalities have very recently been generalised to non-negative concave functions f and non-negative convex functions g,...

polychlorinated biphenyls (pcbs) have been widely used to flame-retard products common in homes and theworkplace, and subsequently. polychlorinated biphenyls (pcbs) typify a class of highly toxic, stable aromaticpollutants. pcbs are recently being scrutinized for potential environment damage in groundwater and in theatmosphere. the elimination of chemical pollutants from a contaminated environm...