نتایج جستجو برای: boron rich mineral
تعداد نتایج: 239662 فیلتر نتایج به سال:
There are fragments of xenoliths in basaltic rocks of young volcanoes from Stromboli (Italy). They are oordierite bearing bUChite, having white colours and are in various sizes. The biggest fragment is around 20 '-"In long. The main minerals are cordierite. Around eithy percent of rocks composed of cordieritc and 20% consist of tridymite, hypersthene, sanidine and glass. Microscopic studie...
Electrochemical deposition from a 0.1 M sodium sulphate solution, containing Cu2+ (adjusted to pH 3 with hydrochloric acid) produced a well defined copper nanoparticle deposit on the surface of a boron doped diamond electrode. Changing conditions such as potential (-0.8, -1.0 and -1.2 V), time (5, 2 and 0.5 s) and concentration of Cu2+ (500, 250 and 100 microM) was found to give copper nanopart...
Two boron-rich chalcogenides B12S and B12Se isostructural to α-rhombohedral boron were synthesized by chemical reaction of the elements at high-pressure – high-temperature conditions. The crystal structures stoichiometries both compounds confirmed Rietveld refinement synchrotron X-ray diffraction data elemental analysis. experimental Raman spectra investigated for first time. All observed bands...
The Metabolic Syndrome increases the risk for atherosclerotic cardiovascular disease and type 2 Diabetes Mellitus. Increased fructose consumption and/or mineral deficiency have been associated with Metabolic Syndrome development. This study aimed to investigate the effects of 8 weeks consumption of a hypersaline sodium-rich naturally sparkling mineral water on 10% fructose-fed Sprague-Dawley ra...
Background: Calcium is the most abundant mineral in the human body. This mineral is provided only by the consumption of foods containing calcium that it is recommended to use at least1300 mg daily for adults. This study is aimed to investigate the nutritional behavior of female high school students about Consumption of Calcium-Rich Foods.Materials and MethodsAt a descriptive-analytical study, t...
There is much uncertainty in the literature about the structure of several Be-B phases between 20 and 33 atom % Be. We clarify the structural choices in this region of the phase diagram, proposing structural candidates obtained from a combination of chemical intuition and unbiased solid-state structure searches. In particular, we discuss the structural, dynamical, and electronic properties of t...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید