نتایج جستجو برای: ارزشیابی کلاسی cba
تعداد نتایج: 10636 فیلتر نتایج به سال:
A facultative alkalophile capable of utilizing 4-chlorobenzoate (4-CBA), strain SB8, was isolated from soil with an alkaline medium (pH 10.0) containing the haloaromatic compound as the carbon source. The strain, identified as an Arthrobacter sp., showed rather extensive 4-CBA-degrading ability. 4-CBA utilization by the strain was possible in the alkaline medium containing up to 10 g of the com...
The uptake of 4-chlorobenzoate (4-CBA) in intact cells of the coryneform bacterium NTB-1 was investigated. Uptake and metabolism of 4-CBA were observed in cells grown in 4-CBA but not in glucose-grown cells. Under aerobic conditions, uptake of 4-CBA occurred with a high apparent affinity (apparent Kt, 1.7 microM) and a maximal velocity (Vmax) of 5.1 nmol min-1 mg of protein-1. At pH values belo...
Objective(s) Crocin bleaching assay (CBA) is a new method for determination of antioxidant capacity. In CBA, addition of hydrogen to the conjugated double bonds of crocin results in reduction of crocin and increase in the absorbance at 440 nm, which is considered as a measure of antioxidant potential. Here CBA method was set up using di-gentiobiosyl crocin or a-crocin from Iranian saffron. The...
CBA/N mice, which express the X-linked immunodeficiency gene xid, are susceptible to Salmonella typhimurium. The basis for this susceptibility is currently unknown. However, previous studies (10) from this laboratory have provided evidence that susceptibility may be due to a defective anti-S. typhimurium antibody response. In that report we hypothesized that the defective antibody response may ...
BACKGROUND While stent restenosis and late thrombosis still occur even with drug-eluting-stents (DES), there remains a need to explore other strategies for preventing restenosis. METHODS AND RESULTS Five hundred and twenty-one patients were randomized: 260 to cutting-balloon angioplasty (CBA) before bare-metal stent (CBA-BMS) and 261 to balloon-angioplasty (BA) before BMS (BA-BMS). Intravascu...
The detection of serum anti-acetylcholine receptor (AChR) antibodies is currently an important tool for diagnosing myasthenia gravis (MG) since they are present in about 85% MG patients. Many serological tests now available. Nevertheless, results from these can be different some aim this study to compare the sensitivity a commercially available fixed cell-based assay (F-CBA) that enzyme-linked ...
Female CBA/J mice impregnated by male DBA/2J mice (CBA/J×DBA/2J matings) are prone to spontaneous abortion, although the reason for this is unclear. In this study, the stathmin-1 expression pattern was evaluated in uterine natural killer (uNK) cells purified from CBA/J×DBA/2J matings. Results were compared with those in a CBA/J×BALB/c control group that yields successful pregnancies. The mean ±...
چکیده زمینه و هدف: ارزشیابی یکی از جنبه های مهم فعالیت های آموزشی است که به صور مختلف انجام می شود و توسط آن می توان به نقاط ضعف و قوت برنامه های آموزشی پی برد. در این مطالعه نقش ارزشیابی مستمر به صورت پرسشهای کلاسی بر پیشرفت تحصیلی دانشجویان مطقع کارشناسی دانشگاه علوم پزشکی زنجان مورد بررسی قرار گرفت. روش بررسی: تحقیق حاضر یک مطالعه توصیفی تحلیلی به شکل مقطعی است که در جریان چهار ترم تحصیلی و ...
This study explores and describes different viewpoints on Computer Based Assessment (CBA) by using Q methodology to identify perspectives of students and instructors and classify these into perceptional typologies. Thirty undergraduate students taking CBA courses and fifteen instructors adopting CBA into their curriculum at a university in Korea, were chosen as participants in this study. As a ...
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