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تعداد نتایج: 21175424 فیلتر نتایج به سال:
The present study aims at phytoremediation of Lemna gibba L. in aqueous solutions with different concentrations of TC and Degradation Products (DPs). It also tries to determine whether there are differences in TC, ETC, EATC, and ATC levels, accumulated by Lemna gibba L. Exposure concentrations of 50, 100, and 300 ppb have been selected for TC and DPs, showing that the highest TC50, TC100, and T...
In this research, concentrations of heavy metals (i.e., cadmium, lead, copper) in muscle, liver and gill tissues of Euryglossa orientalis (Family: Soleidae) in two fishing areas, from northern Persian Gulf that names Hendijan port (Bahrekan) in Khuzestan province and Deylam port in Bushehr province were measured and compared. Fifty fish samples randomly were collected from Hendijan and Deylam p...
background: schizophrenia is a disorder of the executive function of both sensory and central nervous system. recent studies suggest that immune mechanisms play a role in the pathophysiology of this disease. the variations in cytokine concentrations have been associated with psychopathology and treatment of schizophrenia. objective: to investigate the changes in serum concentrations of tnf- α, ...
The present study aims at phytoremediation of Lemna gibba L. in aqueous solutions with different concentrations of TC and Degradation Products (DPs). It also tries to determine whether there are differences in TC, ETC, EATC, and ATC levels, accumulated by Lemna gibba L. Exposure concentrations of 50, 100, and 300 ppb have been selected for TC and DPs, showing that the highest TC50, TC100, and T...
the effect of salinity on growth, inorganic ions and dry matter partitioning in sugar beet cultivars
this study investigated intra-specific variation in the growth parameters and dry mat-ter partitioning of sugar beet cultivars at different levels of salinity (0, 50, 150, 250 and 350 mm nacl + cacl2 in 5:1 molar ratio) using four cvs, one british (madison) and three iranian cvs (7233-p12, 7233-p21 and 7233-p29). the plants were grown in a controlled greenhouse environment for about 18 weeks. a...
The effects of different levels of nitrogen (100, 200, 300 and 400 mg/L) and potassium (125, 250 and 375 mg/L) on yield and leaf N and K concentrations of tomato were investigated in perlit culture using a factorial randomized design with three replications. The highest fruit yield was obtained with 200 mg/L N. Higher levels of nitrogen decreased tomato yield. With increasing nitrogen concentra...
the concentrations of serum calcitonin', parathormone (pth), amylase, alkaline phosphatase (alkp), calcium and phosphorus were studied in pre-and post-dialysis patients with chronic renal failure. all patients had extremely elevated serum urea and creatinine concentrations with the mean values of143.8 and 10.5 mg/dl respectively. the plasma amylase activity was higher than normal with a me...
background: the concentrations of radionuclides like 226ra, 232th and 40k and the dose rate are measured in igneous and metamorphic rock formations in and around chickmagalur. a total of 236 samples from 13 different locations around study area were analyzed. materials and methods: the activity concentrations of the three radioactive elements were determined for mean period of 25000 s using hpg...
the present paper has determined the radioactivity concentrations, which are due to natural occurrence of radionuclides along with heavy metal concentration in water, sediment, and fish from 2 reservoirs in ghana. heavy metal concentrations in all samples were generally within the who safe limits with the average activity concentrations of 238u, 232th, and 40k in water being respectively 0.42±0...
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