Gas exchange is constrained by the whole-plant hydraulic conductance (Kplant). Leaves account for an important fraction of Kplant and may therefore represent a major determinant of plant productivity. Leaf hydraulic conductance (Kleaf) decreases with increasing water stress, which is due to xylem embolism in leaf veins and/or the properties of the extra-xylary pathway. Water flow through living...

OsO4 selectively forms thymine glycol lesions in DNA. In the past, OsO4-treated DNA has been used as a substrate in studies of DNA repair utilizing base-excision repair enzymes such as DNA glycosylases. There is, however, no information available on the chemical identity of other OsO4-induced base lesions in DNA. A complete knowledge of such DNA lesions may be of importance for repair studies. ...

Topological indices are invariant numerical quantities of a graph that give facts about the structure graphs and found to be very helpful in predicting physical properties aluminophosphates. The characteristics aluminophosphates similar zeolites. Two examples current applications natural gas dehydration humidity sensors. Researchers chemistry materials science synthesizing new frameworks. There...

Companies that generate a large amount of wood ash will need an industrial process to agglomerate the ash and lower its reactivity, because untreated ash is a dust hazard for workers and is difficult to spread evenly on forest soil. In addition, untreated ash can cause burning damage to vegetation owing to its alkalinity and rapid release of salts. Production of large amounts of wood ash agglom...

akin type (asymmetric) reverse osmosis membranes undergo an irreversible osmotic dehydration upon coming into contact (skin side) with salt solutions. the extent of consequent changes (in appearance; decrease in linear dimension, water flux and salt rejection) are dependent on the salt concentration. these observations are correlated with the expected morphological changes taking place during d...

Carbon monoxide is a comparative rarity among the biologically generated C, compounds. It has been found in large concentration only in the hollow stems of the kelp, Nereocy8tis (Blinks, 1951), and in the float of the Portuguese man-of-war, Phy8atia physalia L. (Wittenberg, 1958, 1960). A glandular structure, the gas gland or pneumadena, formed by localized modification of the inner wall of the...

introduction: this study aimed to assess the incidence of breastfeeding-associated hypernatremia and related risk factors among hospitalized hyperbilirubinemic neonates. methods: this prospective study was conducted at nemazee hospital affiliated to shiraz university of medical sciences during one year to determine the association between hypernatremia (serum sodium concentration of >150 meq/l)...