A Hermitian metric on a complex manifold of complex dimension n is called astheno-Kähler if its fundamental 2-form F satisfies the condition ∂∂F n−2 = 0 and it is strong KT if F is ∂∂-closed. We prove that a conformally balanced astheno-Kähler metric on a compact manifod of complex dimension n ≥ 3, whose Bismut connection has (restricted) holonomy contained in SU(n), is necessarily Kähler. We p...

The injection into the dorsal skin of a suspension of guinea pig testis or spermia incorporated in a water-in-oil emulsion containing killed mycobacteria induces aspermatogenesis in guinea pigs. The injury begins with the inhibition of the maturation of spermia and proceeds through the degeneration and exfoliation of spermatids, spermatocytes, and finally spermatogonia. These germinal cells pas...

Background: Facing infertility put too much emotional stress and physical burden on infertile couples that make it difficult to deal with. According to this fact that infertility in some men appears with specified disorder but in most cases there is no clear cause for male infertility which determine the special attention to lifestyle and environmental factors. In this study the effects of smok...

Abstract We investigate the Fu-Yau equation on compact almost astheno-Kähler manifolds and show an a priori C 0 -estiamte for smooth solution of equation.

Objective: Objective of this study was to explore the effect of empirical antibiotics and micro nutritional blends in infertile men having idiopathic oligospermia, asthenospermia and oligoasthenospermia Materials and Methods: This prospective cross sectional study was undertaken in a tertiary level infertility care unit of Dhaka between September 2005 and December 2007. Two hundred and seven ol...

We provide a new cohomological obstruction to the existence of astheno-Kähler metrics on compact complex manifolds. Several results independent interests regarding Bott-Chern and Aeppli cohomology groups are presented relevant examples discussed.

I t has been shown that a single intracutaneous injection of autologous or homologous spermia, or testicular suspension incorporated in a water-in-oil emulsion containing killed mycobacteria, induces aspermatogenesis in the guinea pig (1). This process results in the degeneration, necrobiosis, and elimination of most of the germinal cells without injury to the Leydig cells or accessory genital ...