In this study, a glass ceramic with a nominal composition 58ZnO:4Bi₂O₃:4WO₃:33.3B₂O₃ was synthesized by melt quenching technique. A gas sensor was then manufactured using a ZnO sol-gel phase as a permanent binder of the glass-ceramic to an alumina substrate having interdigitated electrodes. The film sensitivity towards humidity, NH₃, H₂ and NO₂ was studied at different temperatures. X-ray diffr...

The substantial of mineral ingredients in honey may symbolize the existence of elements in the plants and soil of the vicinity wherein the honey was taken. The aim of this study was to detect the levels of 13 elements (Potassium (K), Sodium (Na), Calcium (Ca), Iron (Fe), Zinc (Zn), Cadmium (Cd), Copper (Cu), Manganese (Mn), Lead (Pb), Nickel (Ni), Chromium (Cr), Aluminum (Al), and Selenium (Se)...

[1] When subjected to lower-mantle pressures and temperatures, natural ‘‘anhydrous’’ basalt containing 0.2 wt.% H2O forms a phase assemblage in which SiO2 stishovite is a significant carrier of hydrogen (up to 500 ppm H2O by weight, as hydroxide), whereas the coexisting (Mg, Fe, Al, Ca)SiO3 perovskite appears to be not (upper bound of 50 ppm (wt) H2O). Contrary to the devolatilization character...

Purpose: To determine the metallic content of different parts of Gloriosa superba collected from two different locations in Pakistan, and also to assess their nutritious values and toxic levels. Methods: The plant material and soil were collected from two different locations polluted and unpolluted. Wet digestion method was used for the preparation of samples (whole plant and soil) followed by ...

An abundance of the trace elements has been determined in olivine Archean spinel-bearing phlogopite harzburgite enclave (sample UR17/2) from Bug granulite complex Ukrainian Shield by SIMS analysis. Major were analyzed SEM-EDS and EPMA The shows a homogeneous chemical composition: MgO — 45.20—45.64 wt.%, FeO 13.66—14.23 with Fo85—86 Fe/Mn ratio 68.3—68.6 which corresponds to 60—70 peridotites. N...

Abstract A 3Fe4S cluster related to M‐cluster of Mo‐nitrogenase is reported. [K(THF) 5 ][Fe 3 (μ‐bdt) 2 (μ‐PPh )(CO) ] ( 1 ) synthesized from photo‐assisted structural rearrangement ][(μ,κ ‐bdt)Fe under visible light irradiation. The molecular structure consists a Fe core bearing one dithiolate bridge and the second group capping onto metallic plane. motif analogous that Mo‐participated unit in...

The D/H ratio in interstellar gas varies on scales of a few hundred pc in the local Milky Way, with D/H values ranging from ∼7 ppm to ∼22 ppm. The reduction in D/H relative to the primordial value of D/H ≈ 26 ppm is usually attributed to " astration " – conversion of D into other elements by nuclear fusion in stars. However, it is shown here that astration has difficulty accounting for the obse...

scion-rootstock combination and level of salinity affect growth characteristics and concentration of nutrition elements of almond leaves and roots. in this research, effects of salinity stress were investigated on growth characteristics and nutrient concentration of almond leaves and roots by completely randomized design (crd), with two factors, genotype and water salinity with three replicatio...

Concentrations of selected trace minerals (Cu, Fe, Zn, Mn, Co, Se) were determined from annual cool-season grass pasture forages over four consecutive winter-spring grazing seasons (2001-2005). Twice monthly forage samples were taken from eight experimental pastures used in beef cattle grazing trials. Two, 2-yr experiments were conducted; animal and pasture data were reported previously. Each e...