No abstract

Neutropenia is a potentially serious complication of parenteral benzylpenicillin administration. It is thought to occur more frequently in patients receiving infusions of stored penicillin solutions. We report three cases of neutropenia produced after bolus injections of freshly prepared benzylpenicillin. Twenty-five other cases were reviewed from the literature and the data summarized.

We study the commutativity of certain class of rings, na me/y rings with unity 1 and right s-unital under each of the following properties [yxm-xn f (y) xP , x] = O, [yxm + xn f (y) xP, x) = O, where f (t) is a polynomial in t 2 Z [t] varying with pair of ring elements x, y and m, n, p are fixed non-negative integers. M oreover, the results ha ve been extended to the case when m and n depend on the choice of x and y and the ring satisfies the Chacron's Theorem.

The aim of this paper is to generalize the results in [1] and [13]. Here, we are interested in two problems concerning certain classes of near rings satisfying one of the following polynomials identities : (*) For each x, y in a near-ring N , there exist positive integers t = (x, y) ≥ 1 and s = s (x, y) > 1 such that xy = ±y s x t. (* *) For each x, y in a near-ring N , there exist positive integers t = t (x, y) ≥ 1 and s = s (x, y) > 1 such that xy = ±x t y s .