نتایج جستجو برای: using cochrans formula
تعداد نتایج: 3451729 فیلتر نتایج به سال:
infant formula has a fatty acid composition that meets the needs of the neonates for unsaturated fatty acids.these fatty acids are of major importance during this period of life in which the brain and retina are developing, and will therefore have an influence upon visual acuity and learning abilities. oxygen reacts readily with unsaturated fatty acids, so that every time these compounds are ha...
Breaking waves generated by wave shoaling in coastal areas have a close relationship with various physical phenomena regions. Therefore, it is crucial to accurately predict breaker indexes such as breaking height and depth when designing structures. Many studies on been carried out, many experimental data documented. Representative provide empirical formulas for the prediction of index, mainly ...
abstract: in the paper of black and scholes (1973) a closed form solution for the price of a european option is derived . as extension to the black and scholes model with constant volatility, option pricing model with time varying volatility have been suggested within the frame work of generalized autoregressive conditional heteroskedasticity (garch) . these processes can explain a number of em...
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In the treatment of superficial lesions with 8-13 MeV electrons, lead shields are often used to protect the underlying tissue. Measurements were made with film and ion chamber to analyse various aspects of external and internal shielding in electron beam therapy. Data were obtained on the thickness of lead required for shielding, the effect of blocking on dose-rate, electron-backscattering from...
determination of drug residues in food is of great importance due to their toxicity. long-term exposure with low level of drug residues could be important, especially in children. based on document study, oxytetracycline (otc) is a prophylaxis and treatment agent for great number of diseases and possesses a broad spectrum activity against many pathogenic organisms and can be toxic or cause alle...
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