[Preparation and Characterization of Pharmaceutical Properties of Tanshinone Ⅱ_A Microspheres].

Objective: To optimize the polymer material and process condition for preparation of tanshinone Ⅱ_A microspheres by orthogonal design.

Methods: The microspheres were prepared by emulsion solvent evaporation method. The optimum polymer material and preparation process were clarified by the comprehensive weighted score which was evaluated with the drug loading, encapsulation efficiency, and yield.

Breastfeeding experiences of Taiwan nurses on rotational shifts.

The aim of this study was to describe the experiences of ten three-shift nurses, with particular focus on how they make arrangements regarding breastfeeding in relation to their workplaces and work breaks. Using a qualitative approach, data were obtained through semi-structured interviews with ten three-shift nurses who had breastfed for more than six months and who returned to work after childbirth. Snowball sampling was used to recruit participants, each of whom was interviewed for 1.