Coral skeletons are one of the best archives for past ocean seawater (SW) chemistry and isotopes. However, distribution coefficients major minor elements in coral not well determined. In this study, we launched an experiment to determine multiple corals’ by changing Ca concentrations SW (Ca ). Two scleractinian corals, Pocillopora damicornis Acropora cervicornis were cultured modified Gulf Eila...

In this study, the concentrations of heavy metals (Ca, Zn, Cu, Fe, Mn, Ni) in thesediment of Shavoor River in Khuzestan Province in Iran has been investigated. After the library studies and field studies, six samples of water and sediment were taken from the river in order to evaluate heavy metal pollution in sediments. To determine the geochemical phases of metals in sediment samples the 5-ste...

background: in this study, the chemical quality of water in some sub-basins of gamasiab river has been investigated for a long term planning of water consuming in the region . methods: the area is about 11 x10 3 km 2 , located in ramadan and kermanshah, the two western regions of iran. in this regard the results of the water samples, which were collected on the outlet of the 13 hydrometrical st...

Soft X-ray microscopy is a powerful tool for high-resolution mapping of light elements in thin specimens such as a biological cell with a few-micron thickness. We have explored the method to obtain intracellular distribution of light elements particularly of minor light elements such as Ca, P, and S. Since abundant major light elements, C, O and N are constituent elements of most biomolecules, ...

BACKGROUND In many species, the small intestine is the major site of calcium (Ca(2+)) absorption. The horse differs considerably from most other species with regard to the physiology of its Ca(2+) metabolism and digestion. Thus, this study was performed to get more information about the transcellular Ca(2+) absorption in the horse.Two mechanisms of intestinal Ca(2+) absorption are described: th...

prediction of the heavy metals in the groundwater is important in developing any appropriate remediation strategy. this paper attempts to predict heavy metals (pb, zn and cu) in the groundwater from arak city, using artificial neural network (ann) algorithm by taking major elements (hco3, so4) in the groundwater from arak city. for this purpose, contamination sources in the groundwater were rec...

a number of researches have been performed in the field of elemental analysis of fruitsfrom different areas of iran and there is a vast unstudied area in this field. in this study, seven mineral elements such as na, k, ca, mg, fe, zn and cu in the tree soil, citrus limunum juice of gorgan and iranshahr gardens and citrus limetta juice of gorgan and bandarabas gardens were determined by flame ph...

BACKGROUND Data on community spread of methicillin-resistant coagulase-negative staphylococci (MR-CoNS) are scarce. We assessed their potential role as a reservoir of staphylococcal cassette chromosome mec (SCCmec) IVa, the leading SCCmec subtype in community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA). METHODS Nasal carriage of MR-CoNS was prospectively investigated in 291...

CaSiO3 polymorphs are abundant in only unique geological settings on the Earth’s surface and major Ca-bearing phases at deep mantle condition. An accurate comprehensive study of their density structural evolution with pressure temperature is still lacking. Therefore, this we report elastic behavior wollastonite CaSiO3-walstromite pressure. Both minerals characterized by first order phase transi...

Kidney stone disease affects people globally, with its prevalence on the rise. Given importance of elements’ function in formation kidney stones, this study investigated major and trace element content thirty samples from patients Beijing. The included inorganic components (calcium oxalate carbonate apatite) organic (uric acid). Results showed that Ca is much higher than components. Compared to...