نتایج جستجو برای: elemental analysis
تعداد نتایج: 2836297 فیلتر نتایج به سال:
To many in our community the study of nuclear Physics is a mental exercise that strengthens the mind, and helps to accumulate the appropriate number of points for a BSc degree. In reality many of the fundamental concepts of Physics, and nuclear physics in particular, have led to significant improvements in the community. (ref. MRI, CAT, PET, radiation therapy, nuclear power). This paper address...
Introduction Commercial production of large-area silicon drift detectors (SDDs) heralds an exciting new time in biological elemental analysis. Improved low-energy performance and higher collection efficiencies mean EDS is no longer limited by low count rates and poor solid angles. High count rates can be achieved on all types of materials, including soft biological tissues, without altering nor...
Osmolality of elemental and semi-elemental formulas supplemented with nonprotein energy supplements.
BACKGROUND Elemental and semi-elemental formulas are used to feed infants with short bowel syndrome, who may not be able to tolerate feeds of more than 310 mOsm kg(-1). The present study aimed to measure the osmolality of elemental and semi-elemental formulas at different concentrations, with and without the addition of nonprotein energy supplements. METHODS The osmolality of one elemental an...
In order to evaluate differences between the results of elemental analysis of glass a proficiency test was carried out during the period 1999/2000. The initial work on this project was presented at the first EAFS Meeting in Lausanne in 1997. Three pairs of glass samples with similar refractive indices had to be examined using refractive index measurements and elemental analysis. In this study S...
X-ray microanalysis has the potential to extend beyond high resolution element mapping of the obvious and not-so-obvious. The real power of X-ray microanalysis is the speed and accuracy with which it can enable true discovery – uncovering the unexpected chemical phase(s) that element-based image analysis alone cannot detect given the limitations of distilling massive amounts of spectral data in...
in this paper, we report the synthesis and characterization of a new symmetric macroacyclic schiff base ligand (h2l) and related complexes with different metals. (h2l) was synthesized by the one pot condensation reaction of 2-[2-(2-formyl phenoxy)ethoxy]benzaldehyde and 2-aminobenzenethiol in a 1:2 molar ratio. the acyclic schiff base was characterized by ir, nmr spectroscopy and elemental anal...
achaemenid glazed bricks of archaeological excavation of tall-e-ajori in persepolis city were studied by multiple instrumental analysis methods such as xrf, xrd, sem-eds, icp and optical microscopy to identify the compositional features of glaze and brick body. glaze samples are apparently white and yellow and this phenomenon are caused by the deterioration processes in burial environment, he...
in this study, laser induced breakdown spectroscopy (libs) is used for qualitative analysis of healthy and carious teeth. the technique of laser ablation is receiving increasing attention for applications in dentistry, specifically for the treatment of teeth such as drilling of micro-holes and plaque removal. in the process of ablation a luminous micro-plasma is normally generated which may be ...
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