sugarcane, which has high water requirements, is grown in khuzestan province (iran). climate and optimizing the use of water is very important to sustainable cultivation of sugarcane. studies of water requirements for sugar cane in khuzestan show that in parts of sugarcane agro-industry, the water applied is more than the actual water requirement of the plant. the present study was conducted to...

In hepatocyte cultures, insulin stimulates cellular accumulation of K+, partly (approximately 20%) by net replacement of cell Na+, but largely (approximately 80%) by increasing the cell K++Na+ content, with a consequent increase in cell volume. An increase in cation content occurred within 5 min of exposure to insulin and was not secondary to metabolic changes. Insulin also increased the cation...

The anthocyanins of Siahe Sardasht variety (Vitis vinifera L. var. S.S.) were extracted from freezed samples and were purified by adsorption on cation-exchange resin column. Individual pigments were separated by TLC on cellulose plates. Monomeric anthocyanin content that was determined by pH-differential, was 1740.11±3.58 mgL?1 (based on malvidin 3-glucose). Five major pigments were identified ...

the anthocyanins of siahe sardasht variety (vitis vinifera l. var. s.s.) were extracted from freezed samples and were purified by adsorption on cation-exchange resin column. individual pigments were separated by tlc on cellulose plates. monomeric anthocyanin content that was determined by ph-differential, was 1740.11±3.58 mgl?1 (based on malvidin 3-glucose). five major pigments were identified ...

the functions employed in an estimation of costly measured soil properties from either widely available or more easily obtained basic soil properties are referred to as pedotransfer functions. to develop pedotransfer functions, one can use multivariate regression, neural networks and neuro-fuzzy models. to make a comparison among the mentioned models, 153 soil samples were collected from soils ...

Forests of northeastern North America have been exposed to anthropogenic acidic inputs for decades, resulting in altered cation relations and disruptions to associated physiological processes in multiple tree species, including sugar maple (Acer saccharum Marsh.). In the current study, the impacts of calcium (Ca) and aluminum (Al) additions on mature sugar maple physiology were evaluated at the...

This paper studies a shape-invariant Engel curve system with endogenous total expenditure, in which the shape-invariant speci…cation involves a common shift parameter for each demographic group in a pooled system of nonparametric Engel curves. We focus on the identi…cation and estimation of both the nonparametric shapes of the Engel curves and the parametric speci…cation of the demographic scal...