نتایج جستجو برای: if they have not observed people
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total concentrations of mineral elements in soil bear little relation to their availability for plants. the dgt (diffusive gradients in thin-films) technique has been found to be a good predictor of trace metals, micronutrients, phosphorous and potassium bio-availability and uptake. in the dgt technique, elements are accumulated on a binding gel after their diffusive transport through a hydroge...
The emerging and pervasive disease of COVID 19 (coronavirus disease), which has gone from an epidemic to a global pandemic, has created many challenges for the international community. Since this disease has certain characteristics such as the unknown and complexity of its origin, high extent and speed of its spread and transmission, high mutability, lack of definitive treatment so far for it, ...
in the past couple of decades sociocultural theory of sla and its implications in efl contexts have attracted attentions of research circles worldwide and aroused some controversies. firth and wagner (1997) have questioned the principles of the cognitive view which gives importance to mental constructs in favor of sociocultural view which highlights social and contextual constructs. but if soci...
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