Effect of bajijiasu isolated from Morinda officinalis F. C. how on sexual function in male mice and its antioxidant protection of human sperm.

Ethnopharmacological Relevance: In recent years, the physiological aspects of human fertility have been seriously influenced by the interactions of genetic and environmental factors. Almost one in 20 males has been affected by male infertility, providing a great challenge and an opportunity to use natural compounds as alternatives to chemical drugs with comprehensive adverse effects. However, ample evidences are scanty to support the physiological mechanisms of natural compounds used to treat male infertility.

Recent developments of analysis for hydrodynamic flow of nematic liquid crystals.

The study of hydrodynamics of liquid crystals leads to many fascinating mathematical problems, which has prompted various interesting works recently. This article reviews the static Oseen-Frank theory and surveys some recent progress on the existence, regularity, uniqueness and large time asymptotic of the hydrodynamic flow of nematic liquid crystals. We will also propose a few interesting questions for future investigations.

Soliton dynamics in planar ferromagnets and anti-ferromagnets.

The aim of this paper is to present a rigorous mathematical proof of the dynamical laws for the topological solitons(magnetic vortices) in ferromagnets and anti-ferromagnets. It is achieved through the conservation laws for the topological vorticity and the weak convergence methods.