نتایج جستجو برای: centrifuge experiments
تعداد نتایج: 491468 فیلتر نتایج به سال:
INTRODUCTION We examined responses of volunteers with known medical disease to G forces in a centrifuge to evaluate how potential commercial spaceflight participants (SFPs) might tolerate the forces of spaceflight despite significant medical history. METHODS Volunteers were recruited based upon suitability for each of five disease categories (hypertension, cardiovascular disease, diabetes, lu...
Expression systems capable of growing to high cell densities are now readily available and are popular due to the benefits of increased product concentration. However, such high solids density cultures pose a major challenge for bioprocess engineers as choosing the right separation equipment and operating it at optimal conditions is crucial for efficient recovery. This study proposes a methodol...
The concentration and purification of influenza virus by means of differential centrifugation in a vacuum type centrifuge, by adsorption on and elution from adult chicken red cells, by elution of the precipitate formed on freezing and thawing of allantoic fluid, by adsorption on and elution from embryonic chick red cells, and by combinations of the first method with each of the three succeeding...
In total, 29 compounds from sweet wormwood (Artemisia annua L.) oil were identified using gas chromatography-mass spectrometry. The five active components were D-camphor, linalool, cineole, α-terpineol, and L(-)-borneol. The effectiveness of A. annua oil, as well as d-camphor, linalool, cineole, α-terpineol, and L(-)-borneol, as fumigants, contact insecticides, and repellents, were tested on th...
A total of 67 leukaphereses were performed with the continuous-flow centrifuge (CFC) on 27 healthy donors for the purpose of obtaining increased yields of granulocytes for infusion into septic patients with acute leukemia accompanied by severe granulocytopenia. The addition of hydroxyethyl starch (HES) to the input line of the CFC significantly (p < 0.005) increased the total number of leukocyt...
BACKGROUND Vascular endothelial growth factor-A (VEGF-A) is intensively investigated in various medical fields. However, comparing VEGF-A measurements is difficult because sample acquisition and pre-analytic procedures differ between studies. We therefore investigated which variables act as confounders of VEGF-A measurements. METHODS Following a standardized protocol, blood was taken at three...
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