Puparia from diapausing pupae of the flesh fly Sarcophaga crassipalpis are lined with twice as much hydrocarbon as puparia from nondiapausing pupae (J. A. Yoder, D. L. Denlinger, M. W. Dennis and P. E. Kolattukudy, unpublished observations). The additional hydrocarbon favors water conservation during diapause by reducing water loss, enhancing water vapor absorptivity and elevating the critical ...

Validation of an in vivo method we developed recently and its application to assess the role of dietary factors in carotene conversion were tested in rats. We compared the ratio of area under plasma vitamin A time-curves (AUC(0-12h)) obtained after a dose of beta-carotene to that after a dose of vitamin A, with the in vitro intestinal supernatant beta-carotene dioxygenase activity. In separate ...

OBJECTIVE To determine the efficacy of 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) in the detection of radiation-induced myocardial damage in beagles by comparing two pre-scan preparation protocols as well as to determine the correlation between abnormal myocardial FDG uptake and pathological findings. MATERIALS AND METHODS The anterior myocardium ...

The antitumor potency of a series designed and prepared antibacterial quinobenzothiazines was evaluated against different types human cancer cell lines, such as glioblastoma SNB-19, lung adenocarcinoma A549 breast T47D, the activities compounds were compared to cisplatin doxorubicin. 9-Propoxy-5-methyl-12H-quino[3,4-b][1,4]benzo- thiazinium chloride (4a), 9-allyloxy-5-methyl-12H-quino[3,4-b][1,...

Several surface treatments has been applied to the 4140 specimens which are exposed frictional conditions like gears in order increase wear resistance and hardness. Nitration is a common method improve hardness of surfaces. However, parameters must be chosen wisely. The temperature, time, flow rate during nitration SAE steels were optimized this study. ranges for selected as 470⁰C - 520⁰C 570⁰C...