The emanating power of radon provides information on the internal structure of a mineral and the radiation damage caused by the decay of 238U, 235U and 232Th (and their daughters) that are present in the mineral. The concentration of 222Rn in groundwater is primarily controlled by the concentration of U and Th in the underlying rocks, as well as the emanation coefficient for that particular roc...

The previously developed pH swing carbon mineral sequestration immobilizes the gaseous CO2 into a thermodynamically stable solid, MgCO3, using Mg-bearing minerals such as serpentine. This mineral carbonation technology is particularly promising since it generates value-added solid products: high surface area silica, iron oxide, and magnesium carbonate, while providing a safe and permanent stora...

This study was conducted to assess the possible effects of zinc oxide (ZnO) and nano zinc oxide(nZnO) on growth performance as well as the level of Ca, P, Fe, Cu and Zn in Markhoz goat kidsblood samples. Thirty 5-6 months male Markhoz goat kids were supplemented with 22.12 mg ofZn/ kg DM as basal diet for 70 days. Zinc was administered at daily doses of zero, 20 and 40ppm in ZnO group , and 20 ...

Arsenic sorbs strongly to the surfaces of Fe(III) (hydr)oxides. Under aerobic conditions, oxygen acts as the terminal electron acceptor in microbial respiration and Fe(III) (hydr)oxides are highly insoluble, thus arsenic remains associated with Fe(III) (hydr)oxide phases. However, under anaerobic conditions Fe(III)-reducing microorganisms can couple the reduction of solid phase Fe(III) (hydr)ox...

We have developed anew technique for the application of microtracer technology to the on-site assessment of microingredient uniformity in diets for feedlot cattle. The influence of dietary forage (12 vs 24%) and molasses levels (6, 12, 18, and 24%) on the efficiency of recovery of microtracer (33 g/ton) using this new technique was compared with that of chromic oxide (87.4 g/ton) and laidlomyci...

Manganese (Mn) oxide is a ubiquitous metal oxide in sub-environments. The adsorption of Cd(II) on Mn oxide as function of adsorption time, pH, ionic strength, temperature, and initial Cd(II) concentration was investigated by batch techniques. The adsorption kinetics showed that the adsorption of Cd(II) on Mn oxide can be satisfactorily simulated by pseudo-second-order kinetic model with high co...

sarbisheh mineral occurrence is located in the vicinity of the tourshab village about 50 km south of birjand, the center of southern khorassan province, east iran. the predominant geologic characteristics of the region are highly-tectonic deformation, and intrusive, granodiroritic-dioritic, to volcanic, dacitic-andsitic rocks associated with broad alteration. to the northern part of the studied...

   Nowadays, in addition to materials and components of asphalt mixtures that are bitumen, aggregates and mineral fillers, other materials known as additives or modifiers are also used. These compounds include wide range of organic, inorganic, industrial, and natural materials used in order to reduce deficiencies, to improve the physical properties and to modify some mechanical properties o...