نتایج جستجو برای: xrf analysis
تعداد نتایج: 2826054 فیلتر نتایج به سال:
The need for non-destructive methods of analysis in order to preserve evidence can be of great importance, although this requirement may vary from country to country depending upon the prevailing criminal justice system. Most courts understand, and accept, that chemical analysis can result in destruction of a specimen, but in certain instances, Counsel may insist on seeing the specimen that was...
Investigations of the chemical composition kidney stones are essential for understanding nature formation and development preventative treatment methods. Instrumental activation analysis radiations significant tools determining stones. Kidney varying compositions were investigated through use X-ray powder diffraction (XRD) fluorescence (XRF) techniques. Materials can be observed in two very dif...
OBJECTIVES X-ray fluorescence (XRF) is a non-invasive method for determining the iodine content of the thyroid gland in vivo. In spite of the obvious clinical value of such a method in situations of iodine deficiency or iodine overload, the method has not so far been widely used. The objective was to investigate the applicability of the XRF method in a larger number of subjects. DESIGN AND SU...
Abstract: The mine dust deposited on sanded surfaces of test samples in the acrylic bonding exercise of March, 1992 was found by x-ray fluorescence analysis to be 0.05 (+0.07, -0.05) ng/cm2. This is well below the level at which mine dust in bonded joints would present a problem for SNO. The efficiency of the adhesive tape used in the XRF analysis for the removal of mine dust from a sanded surf...
Every infection is a battle for trace elements. Neutrophils migrate first to the infection site and accumulate quickly to high numbers. They fight pathogens by phagocytosis and intracellular toxication. Additionally, neutrophils form neutrophil extracellular traps (NETs) to inhibit extracellular microbes. Yet, neutrophil trace element characteristics are largely unexplored. We investigated unst...
Inductively coupled plasma (ICP) following aqua regia digestion and X-ray fluorescence (XRF) are both geochemical techniques used to determine 'total' concentrations of elements in soil. The aim of this study is to compare these techniques, identify elements for which inconsistencies occur and investigate why they arise. A study area (∼14,000 km(2)) with a variety of total concentration control...
Fabrication of portland cements commonly depends on X-ray fluorescence (XRF), which measures the elemental compositions. XRF is used to adjust the raw material proportions and to control the process conditions. However, to predict the mechanical strength of the resulting concrete, it is essential to know the phase composition which is, so far, indirectly inferred by the Bogue method. Here, we r...
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