نتایج جستجو برای: volume concentration
تعداد نتایج: 674727 فیلتر نتایج به سال:
urinary 1-hydroxypyrene is frequently used as a major metabolite and biological indicator of the overall exposure to polycyclic aromatic hydrocarbons. in this study, solid phase extraction was appropriately conditioned with regard to sample ph, sample concentration, loading flow rate, elution solvent, washing solvent, sample volume and sorbent mass. octadecyl silica cartridge (c18) was used as ...
Protective Role of Biochar in Different Soil Moisture for Prevent Soil Loss in Laboratory Conditions
The using of soil conditioners to water and soil conservation is essential and also, the effect study of soil moisture on the soil conservation process and its role on changing runoff, soil erosion and sediment yield is necessary for understanding and simulating the hydrologic response of soil. Therefore, the present study was carried with the aim of investigating the effect of biochar with amo...
In this study, the effects of some factors on bacterial growth and ferrous oxidation rates were investigated by Acidithiobacillus ferrooxidan in 250 ml shake flasks. One factor at a time (OFAT) design approach was used for preliminary evaluation of various factors affecting the process, such as pH, initial ferrous and elemental sulfur concentrations, shaker agitation rate, and liquid to flask v...
background because of varying reports, there is still need to investigate the impact of wrestling on hematological indices. objectives we investigated differences in the basic hematological indices in wrestlers compared to sedentary controls. patients and methods the blood samples containing anticoagulant were collected from 12 male elite wrestlers (age = 24 ± 1.2 years, weight = 76 ± 5 kg) wit...
the objective of this study was to investigate aspartate-amino-transferase (ast), γ-glutamyl-transferase(ggt), alkaline phosphatase (alp), lactate-dehydrogenase (ldh) and acid phosphatase (acp) activities andsemen parameters (volume, ph, concentration, total sperm number (tsn), progressive motility, dead sperm,total morphological defect (tmd) and hypo-osmotic swelling test (host)) in seminal pl...
in this study, three different age groups of male broodstocks (4, 5 and 6 years respectively) were used to fertilize eggs obtained from nine females. the results showed that 6 year old males had maximum body weight (1766 g), total length (56.3 cm) and sperm volume (31.83 ml). results did not show significant difference in spermatocrit and spermatozoa concentration among age groups (p>0.05). our...
Chloride-dependent K transport ([K-Cl] cotransport) in dog red cells is activated by cell swelling. Whether the volume signal is generated by a change in cell configuration or by the dilution of some cytosolic constituent is not known. To differentiate between these two alternatives we prepared resealed ghosts that, compared with intact red cells, had the same surface area and similar hemoglobi...
Urinary 1-hydroxypyrene is frequently used as a major metabolite and biological indicator of the overall exposure to polycyclic aromatic hydrocarbons. In this study, solid phase extraction was appropriately conditioned with regard to sample pH, sample concentration, loading flow rate, elution solvent, washing solvent, sample volume and sorbent mass. Octadecyl silica cartridge (C<su...
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