Background: Ca is the most important minerals in the body that plays a key rols in the physiological activities, anzymatic reaction and the regulation of myocardial contraction and relax-ation. Ca deficiency causes the heart failure and decrease cardiac contractility. OBJECTIVES: To determine the effects of long-term dietary calcium deficiency on the heart function of layer hens based on the el...

The aim of the study was to compare the minerals and lactic acid profile of Cheddar cheese prepared from cow and buffalo milk. Milks standardized at 4% fat level were used to prepare Cheddar cheese. The cheese was prepared and stored for 120 days ripening at 4°C. Chemical composition and minerals contents were determined at one month intervals during ripening. Lactic acid concentration was esti...

this study was conducted to investigate the type and origin of clay minerals via several profiles in lordegan hilly lands. the profiles were located in two kinds of land uses including forest and dry farm at different slope positions as sampling sites. the soil saples were collected from two depths of soil horizons to indicate cec, soil texture, oc%, calcium carbonate equivalent, x-ray diffract...

A large quantity of world’s oil reserves exists in carbonate reservoirs. Carbonate reservoirs are very sensitive to chemical enhanced oil recovery process because of containing large amount of calcite, dolomite and calcium sulfate minerals. These minerals cause major obstacles during alkali-surfactant-polymer (ASP) flooding. Alkali reacts with these minerals and form undesired precipitations wh...

BACKGROUND Cadmium (Cd) is used in many industries. High-level exposure is associated with severe kidney and bone damage. AIM This study investigates the possible effect of occupational cadmium exposure on parathyroid gland and some minerals in workers. METHODS Environmental air monitoring of cadmium was done. Serum and urine cadmium levels, kidney function, some minerals, and plasma parath...

This study aimed to evaluate the effects of adding Yucca schidigera and zeolite (Clinoptilolite) to feed (super premium and standard) for adult dogs on the apparent indigestibility coefficient of minerals. In the first assessment, 21 dogs were used, with average weight of 12.5kg±1.46 in seven treatments in two periods (super premium diet referred to as control and control with the addition of 1...

By Christopher Mark Gribble Surface adsorption and pore-level properties of mineral and related systems of relevance to the recycling of paper. There is a significant problem for the paper recycling industry known as "stickies". "Stickies" are tacky species, present in recycled paper and coated broke, derived from coating fommlations, adhesives, etc. They impact negatively on paper quality and ...

Calcium carbonate forms scales, geological deposits, biominerals, and ocean sediments. Huge amounts of carbon dioxide are retained as carbonate ions, and calcium ions represent a major contribution to water hardness. Despite its relevance, little is known about the precipitation mechanism of calcium carbonate, and specified complex crystal structures challenge the classical view on nucleation c...

Trees and their associated rhizosphere organisms play a major role in mineral weathering driving calcium fluxes from the continents to the oceans that ultimately control long-term atmospheric CO2 and climate through the geochemical carbon cycle. Photosynthate allocation to tree roots and their mycorrhizal fungi is hypothesized to fuel the active secretion of protons and organic chelators that e...

Template-free polymorph discrimination of CaCO(3) can be easily realized by a so-called double-jet method in aqueous solution under mild conditions, which may shed new light on the controlled crystallization of other inorganic material systems in which polymorph selection is of critical importance or is highly relevant to their properties.