In a study on acute pharyngitis in general practice, we compared a selective group A streptococcal agar (ssA) for the recovery of group A beta-hemolytic streptococci (GABHS) with sheep blood agar. All plates were incubated at 36-degrees-C in an atmosphere reinforced with 5% CO2 for 48 h with a first reading after 24 h. A total of 197 GABHS isolates...
The influence of exogenous progesterone on the development of equine oviductal embryos was determined based upon the recovery of Day-7 uterine blastocysts from treated mares (n = 13) that were given 450 mg progesterone daily between Days 0 and 6 and from untreated control mares (n = 13). Daily administration of 450 mg progesterone in oil significan...
This paper reports the effects of changes in dose-rate and dose-fractionation on the micronucleus (MN) yield in human lymphocytes exposed to 250 Kv X-rays. For the investigation of dose-rate effects whole blood samples of four healthy donors were irradiated with doses ranging from 1 to 4 Gy given at various dose-rates between 0.2 and 40 Gy/h. For t...
In der erzgebirgischen Region gelangen mit frei abfliessenden Waessern gefluteter Bergbaureviere zum Teil betraechtliche Schadstofffrachten in die Gewaesser. Fuer das als Modellfall betrachtete Freiberger Gebiet sind dies jaehrlich 180 t Zn, 4 t Pb und 1,3 t Cd bei Abflussmengen von ueber 1000 m"3/h. Es war ein Verfahren zu entwickeln, das Restgeha...
Germany
The extraction of lysozyme, alpha-chymotrypsin, and pepsin from buffered salt solutions into reverse micelles was examined at different pH values and surfactant concentrations. The reverse micelles were formed by mixing aqueous buffer supplemented with KCl and an organic phase of isooctane(2,2,4-trimethylpentane), containing the anionic surfactant,...
United Kingdom
SIGLE / Available from British Library Document Supply Centre-DSC:DX196094 / BLDSC - British Library Document Supply Centre / GB / United Kingdom
Seven kinds of alkyl alcohol (n-butanol, n-pentanol, n-hexanol, n-heptanol, n-octanol, n-nonanol, and n-decanol) were chosen as the cosolvent for Aliquat 336/ isooctane reversed micelles. By performing liquid-liquid extraction with Aliquat 336 reversed micelles as the extractant, the separation and purification of two enzymes (alpha-amylase and neu...
