نتایج جستجو برای: ray spectroscopy
تعداد نتایج: 441673 فیلتر نتایج به سال:
After stone removal, accurate analysis of urinary stone composition is the most crucial laboratory diagnostic procedure for the treatment and recurrence prevention in the stone-forming patient. The most common techniques for routine analysis of stones are infrared spectroscopy, X-ray diffraction and chemical analysis. The aim of the present study was to assess the quality of urinary stone analy...
There are four major X-ray satellites currently in operation (RXTE, Chandra, XMM-Newton, INTEGRAL), with two more shortly to follow (Astro E II, Swift), and several very ambitious observatories in various stages of planning (Constellation-X, MAXIM, XEUS). This very rich period of X-ray observation is leading to great advances in our understanding of the accretion flow onto the black hole, altho...
x-ray absorption fine structure (xafs) spectroscopy was used to identify directly the metal speciation and local bonding environment of fe in sediments originated from dobczyce reservoir (poland); special attention was paid to analysis of samples collected from points situated at different distances from the land. the combination of traditional approach to data analysis as well as usage of mult...
We upgraded the hard X-ray spectroscopy beamline BL39XU at SPring-8 by installing Kirkpatrick-Baez mirrors to equip it with submicron-focusing capability. At the new experimental end-station located 74 m from the undulator source, an X-ray nanoprobe with a size of 120 × 100 nm has become available at 5–16 keV. This upgrade is fully compatible with the X-ray polarization tunability and helicity-...
A brief review of studies using X-ray Absorption Spectroscopy (XAS) to investigate homogeneous catalytic reactions in fine chemical and pharmaceutical context since 2010 is presented. The advantages of the techniques over traditional lab-based analytical tools, particularly when NMR spectroscopy fails to deliver mechanistic insights, are summarised using these examples. A discussion on the curr...
In this paper we have shown the feasibility of ion beam assisted deposition to produce iron–nickel nitride thin films of various compositions. We have carried out their compositional and structural characterization by means of Rutherford backscattering spectroscopy (RBS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and integral conversion electron Mössbauer spectroscopy (ICE...
Up until about a year ago, gamma-ray spectroscopy has always been done using the analog amplifier, which processes the pulses from the preamplifier to remove the noise, reject the pile-up signals, and shape the signals into some desirable form before sending them to the analog-to-digital converter (ADC) to be digitized. In late 1996, EG&G Ortec introduced a digital gamma-ray spectrometer (DSPec...
The reaction of nano-cellulose and antimony pentachloridein dichloromethane gave nano-cellulose-SbCl5. Also nano-cellulose-SbCl5 has beencharacterized by energy dispersive X-ray spectroscopy(EDX), scanning electron microscopy (SEM)and Fourier transform infrared spectroscopy(FTIR).Nano-cellulose-SbCl5has been applied as a nano-catalyst for synthesis of pyrano[2,3-d]pyrimidines from the simple on...
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