Low speed, two phase (vapor-liquid) flow regimes are important to several significant heat transfer problems in spacecraft. low speed flow rates also create the most gravity-affected flow regimes. high speed flow rates create flow regimes that are affected little by gravity. few studies exist which… More

A new apparatus providing the ability to measure the blood pressure of astronauts without encumbering their movements is described. it usesx a novel bilateral piezoelectric array/microprocessor system (paapms) which measures the blood pressure at the superficial temporal artery. blood flow computer… More

In recent years, considerable attention has been focused on the development of techniques for genetic transformation of higher plants. most advances have been made using either petunia or nicotiana as a model experimental system, mainly because these plants respond well for regeneration in cell… More