نتایج جستجو برای: at different concentrations containing 01
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The normally monomeric 01 subunit of Escherichia coti tryptophan synthetase forms dimers and higher order aggregates following exposure to high urea concentrations and removal of the urea by dialysis. The maximum yield of cx chain dimers is approximately 2%. Dimers of certain combinations of different enzymatically inactive mutant (Y monomers exhibit the missing enzymatic activity. In such hete...
cadmium has been known to be harmful to human health, mainly via contaminated drinking water, food supplies, tobacco and industrial pollutants. the aim of this study was to determine the ability of cadmium chloride (cdcl 2 ) to cause cell death in the human lung carcinoma cell line (calu-6). the cells were grown in rpmi-1640 medium supplemented with 10% fcs, penicillin/streptomycin (100 u/ml, 1...
The influence of supplemental phenothiazine (P) on growth and physiological criteria was studied in parasite-controlled calves consuming endophyte (Acremonium coenophialum)-infected tall fescue (TF). In Exp. 1, nine Angus heifer calves (312 kg) were supplemented with 227 g corn-mineral (CM) mix twice daily and allowed ad libitum access to either high-endophyte (HE) G1-307 (greater than 90% infe...
a large number of single research studies on the effects of strategy-based instruction (sbi) in teaching english as a foreign or second language has been conducted so far. however, the lack of a comprehensive meta-analysis targeting the effectiveness of english language sbi is observed. moreover, the findings of experimental studies regarding the context of the english language, proficiency lev...
In vitro regeneration of four cultivars of carnation namely ‘Nelson’, ‘Impulse’, ‘Sagres’ and ‘Spitit’ through somatic embryogenesis was studied. MS culture medium was supplemented with 30 gl-1 sucrose, 2 mgl-1 2,4-D and 0.2 mgl-1 BA and used for embryogenic callus formation. Somatic embryos were formed when embryogenic callus was transferred to MS medium without growth regulators containing 30...
The effects of selenium (Se) on the growth and antioxidant activity in Spirulina platensis were investigated. S. platensis was grown in zarrouk medium containing three different concentrations of selenate (Na2SeO4) (0 as a control, 5 and 10 mg l-1) for 7 days. Selenate at the concentration of 5 mg l-1was found to improve S. platensis growth. However, selenate was toxic to S. platensis at the co...
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