Energy dispersive X-ray spectroscopy (EDS) Wavelength dispersive X-ray spectroscopy (WDS) 1thickness analysis of thin films by energy dispersive x-ray spectroscopy a thesis submitted to the graduate school of natural and applied sciencesFoot District - tu tienda online de zapatillas. La mejor selección de nike, adidas, NB y muchas otras más. Envío Gratis. Entrega al día siguiente.Energy-Dispersive X-Ray Spectroscopy (EDS) John Goodge, University of Minnesota-Duluth. Interaction of an electron beam with a sample target produces a variety of .edsonsemprimer.pdf - Download as . Energy Dispersive Spectroscopy . The probability of absorption then increases again as the X-ray energy approaches the .CHAPTER 16 X-ray Spectroscopy by Manne Siegbahn 16.1.Energy Dispersive X-Ray Spectroscopy (EDS) Detector . State-of the Art Ethernet X ray Electronic interface 10/100 megabits per .High-resolution X-ray emission spectroscopy with transition-edge sensors: . Download Paper . DOI Link. Keywords . X-ray ...
Energy dispersive X-ray spectroscopy (EDS) Wavelength dispersive X-ray spectroscopy (WDS) 1thickness analysis of thin films by energy dispersive x-ray spectroscopy a thesis submitted to the graduate school of natural and applied sciencesFoot District - tu tienda online de zapatillas. La mejor selección de nike, adidas, NB y muchas otras más. Envío Gratis. Entrega al día siguiente.Energy-Dispersive X-Ray Spectroscopy (EDS) John Goodge, University of Minnesota-Duluth. Interaction of an electron beam with a sample target produces a variety of .edsonsemprimer.pdf - Download as . Energy Dispersive Spectroscopy . The probability of absorption then increases again as the X-ray energy approaches the .CHAPTER 16 X-ray Spectroscopy by Manne Siegbahn 16.1.Energy Dispersive X-Ray Spectroscopy (EDS) Detector . State-of the Art Ethernet X ray Electronic interface 10/100 megabits per .High-resolution X-ray emission spectroscopy with transition-edge sensors: . Download Paper . DOI Link. Keywords . X-ray ...
During the past five decades, the use of X-ray analytical methods has increased in the areas of materials characterization and phase identification. The wide range of applicability of the X-ray fluorescence method has made it a technique employed in thousands of laboratories all over the world. Over the years, many techniques and procedures have been developed that greatly enhance the versatility of the method. The purpose of the X-ray clinic is to combine theoretical and practical application of X-ray fluorescence spectrometry ...
Progress in total reflection X-ray fluorescence spectrometry at Raja Ramanna Centre for Advanced Technology. Tiwari, M. K.; Lodha, G. S.; Sawhney, K. J. S.; Gowrisankar, B.; Singh, A. K.; Bhalerao, G. M.; Sinha, A. K.; Das, Arijeet; Verma, A.; Nandedkar, R. V. // Current Science (00113891);9/10/2008, Vol. 95 Issue 5, p603 Total reflection X-ray fluorescence (TXRF) spectroscopy has attracted interest in recent years. Using this technique, almost all elements ranging from sodium (Z = 11) to uranium (Z = 92) in the periodic table can be detected and analysed in a wide concentration range in a single measurement. The... ...
ASTM-D7220 Standard Test Method for Sulfur in Automotive, Heating, and Jet Fuels by Monochromatic Energy Dispersive X-ray Fluorescence Spectrometry - automotive fuel; diesel; gasoline; petroleum; polarization; spectrometry; sulfur; X-ray;; ICS Number Code 75.160.20 (Liquid fuels)
In the present paper a method for the determination of strontium, barium, calcium, magnesium, silicon, iron, aluminum and sulfur in the product of strontium carbonate by X-ray fluorescence spectrometry with pressed powder sample preparation was developed, and the standard samples were synthesized by high purity reagent. As the contents of strontium in the product of strontium carbonate were very high, the phenomenon of spectrum-peak-saturated occurred and the count rate was overflowed according to the measuring condition which was automatically given by the software system of X-ray fluorescence spectrometry. As a result, the deviation of the measurement is greater. According to analyzing the measuring condition of strontium, a method was given for reducing the count rate by reducing the measuring power of strontium, thus achieving the goal of measurement. When sulfate was measured with pressed powder sample, the results were enhanced with the increase in measuring number. In light of this ...
G. Vankó, P. Glatzel, V. Pham, R. Abela, D. Grolimund, C. N. Borca, S. L. Johnson, C. Milne, W. Gawelda, A. Galler, and C. Bressler, "Time-Resolved X-Ray Emission Spectroscopy," in International Conference on Ultrafast Phenomena, OSA Technical Digest (CD) (Optical Society of America, 2010), paper TuD3 ...
The present study was conducted to (i) determine the precision and accuracy of arsenic measurement in soil samples using ST-EDXRF by comparison with the results of ICP-MS analyses and (ii) identify the relationship of As concentration with soil characteristics. For the analysis of samples, inductively coupled plasma mass spectrometry (ICP-MS) and energy dispersive X-ray fluorescence spectrometry (EDXRF) were performed. According to the results found in the soil samples, the addition of HCl to HNO3, used for the digestion gave significant variations in the recovery of As. However, spectral interferences between peaks for As and Pb can affect detection limits and accuracy for XRF analysis. When comparing the XRF and ICP-MS results a correlation was observed with R2 = 0.8414. This means that using a ST-EDXRF spectrometer, it is possible to achieve accurate and precise analysis by the calibration of certified reference materials and choosing an appropriate secondary target. On the other hand, with ...
|span style=font-weight: bold;|Horizon|/span| is the new Benchtop Total Reflection X-Ray Fluorescence Spectrometer (TXRF) for multi elemental qualitative and quantitative analyses for major constituents and ultra-trace in suspension as well as liquid samples, manufactured by GNR. Verify the new product page here |link products/x-ray-fluorescence/horizon/|http://www.gnr.it/products/x-ray-fluorescence/horizon/|/link| 
The electrodeposition of FeNi alloy films was performed galvanostatically in the sulfate solution (Fe2+/Ni2+ mass ratio 1:2) in order investigate their co-deposition mechanism. The FeNi layers were deposited at variable substrates (copper, brass, silver) under the same chemical (electrolyte composition) and electric plating (current density value) conditions. After applying various time, substrates and external magnetic field orientation, the quality of the obtained film was examined. The surface morphology and crystallographic texture variation were investigated by the Scanning Electron Microscope (SEM), Energy Dispersive X-ray Spectroscopy (EDX), Wavelength Dispersive X-ray Fluorescence (WDXRF) and Laser Confocal Scanning Microscope (LCSM). The anomalous co-deposition of iron group metals is evidently dependent on the substrate.
misc{ecc82857-fb61-4074-a7eb-b66b46ce0ed0, author = {Ahlberg, Mats and Akselsson, Roland and Johansson, Gerd and Johansson, Thomas B and Malmqvist, Klas}, keyword = {thick samples,particle induced X-ray emission,PIXE}, language = {eng}, title = {Proton Induced X-Ray Emission Applied to Thick Samples}, year = {1975 ...
China Med-D-Jy10 10mA Portable X-ray Unit, Find details about China Portable X-ray Unit, 10mA X-ray Macjhine from Med-D-Jy10 10mA Portable X-ray Unit - Guangzhou Med Equipment Co., Ltd.
Due to the excellent selectivity and precision, wavelength dispersive X-ray fluorescence spectrometry is the ideal technique for monitoring TaNx films.
The S8 DRAGON is a truly simultaneous X-ray fluorescence (XRF) spectrometer for precise, high-speed elemental analysis for process control in metal production and foundries.
The aim of this thesis was to investigate carbon based molecular materials at first principles levels. Special attention has been paid to simulations of X-ray spectroscopies, including near edge X-ray absorption fine structure (NEXAFS), X-ray photoelectron, and X-ray emission spectroscopy, which can provide detailed information about core, occupied and unoccupied molecular orbitals of the systems under investigation. Theoretical calculations have helped to assign fine spectral structures in high resolution NEXAFS spectra of five azabenzenes (pyridine, pyrazine, pyrimidine, pyridazine and s-triazine), and to identify different local chemical environments among them. With the help of NEXAFS, the characters of important chemical bonds that might be responsible for the unique magnetic properties of the tetracyanoethylene compound has been revealed. Calculations have demonstrated that X-ray spectroscopies are powerful tools for isomer identification and structure determination of fullerenes and ...
TY - JOUR. T1 - Tracer analysis of tumor by proton-induced X-ray spectroscopy. AU - Ishii, K.. AU - Kamiya, M.. AU - Sera, K.. AU - Morita, S.. AU - Chu, T. C.. AU - Matsuzawa, T.. AU - Shishido, F.. AU - Tawara, H.. PY - 1976/10/1. Y1 - 1976/10/1. N2 - Small amounts of Ga, Yb, and Tl were injected into rats implanted with several kinds of tumor. Samples of liver, serum, brain and tumor, taken out from these rats, were bombarded by 3.5 MeV protons and the induced X-rays were analysed using a Si(Li) detector. Absolute concentrations of these elements taken up by these tissues were determined referring to a known concentration of doped uranium. Some concentration of elements and species of tumor are found.. AB - Small amounts of Ga, Yb, and Tl were injected into rats implanted with several kinds of tumor. Samples of liver, serum, brain and tumor, taken out from these rats, were bombarded by 3.5 MeV protons and the induced X-rays were analysed using a Si(Li) detector. Absolute concentrations of ...
The S8 TIGER Series 2 WDXRF spectrometer delivers for all elements accuracy and precision for industrial quality and process control.
Austin, TX- February 17, 2017. Applied Rigaku Technologies, Inc. has published a new application report that describes the utility of energy dispersive X-ray fluorescence (EDXRF) in academia for teaching and basic research. Rigaku Application Note EDXRF 1654 details useful topics for teaching including principles of X-ray fluorescence, spectra and quantitative comparisons, empirical calibration and use of Fundamental Parameters. 1074189568
The development of iron granules in honey-bee tissues was investigated using both anatomical and analytical methods. Iron granules are present only in the trophocytes of post-eclosion adults and have the same elemental composition as those in foraging adults. The granules increase in both size and number during ageing. Iron levels in developing worker honey-bees were measured by proton-induced X-ray emission spectroscopy. The rate of iron accumulation was directly related to iron levels in the diet, and the iron can be obtained from pollen and honey, both major food sources of the bee. In adults, the iron content of the fat body reached a maximum level (2.4 +/− 0.15 micrograms mg-1 tissue), regardless of the amount of iron available for ingestion. Maximal iron levels are reached at the time when honey-bee workers commence foraging behaviour, suggesting that iron granules may play a role in orientation. Alternatively, accumulation of iron in granules may be a method of maintaining iron ...
Abstract With the development of affordable aberration correctors, analytical scanning transmission electron microscopy (STEM) studies of complex interfaces can now be conducted at high spatial resolution at laboratories worldwide. Energy-dispersive X-ray spectroscopy (EDS) in particular has grown in popularity, as it enables elemental mapping over a wide range of ionization energies. However, the interpretation of atomically resolved data is greatly complicated by beam-sample interactions that are often overlooked by novice users. Here we describe the practical factors-namely, sample thickness and the choice of ionization edge-that affect the quantification of a model perovskite oxide interface. Our measurements of the same sample, in regions of different thickness, indicate that interface profiles can vary by as much as 2-5 unit cells, depending on the spectral feature. This finding is supported by multislice simulations, which reveal that on-axis maps of even perfectly abrupt interfaces ...
The report summarizes the initial work conducted on the rock art pigments for important, primarily Chumash Indian, sites in the vicinity of California. The purpose of this study was the analysis of fifteen red and yellow pigment samples by polarized light microscopy and energy dispersive X-ray fluorescence spectroscopy energy dispersive. Further work concerning the characterization of these pigments was carried out by X-ray diffraction and the pigments were primarily identified as red ochres and yellow ochres. X-ray powder diffraction work was carried out on a number of the pigment microsamples with the result that many of them proved to be admixtures of quartz and haematite. Components such as goethite or lepidocrocite were comparatively less common in this material suggesting that the source of the pigment was either a relatively pure haematite or that some conversion to haematite had been deliberately created. Common impurities from the Santa Barbara Channel Island areas include albite or ...
Austin, TX - June 11, 2013. Applied Rigaku Technologies, Inc. today announced a new empirical method for the analysis of finished cement. Application Note #1273 demonstrates the capabilities of the Rigaku NEX QC+ energy dispersive X-ray fluorescence (EDXRF) spectrometer for quality control during the cement production process. The report includes complete information regarding sample preparation, method calibration and repeatability. 2012675269
Applied Rigaku Technologies, Inc., a division of Rigaku Corporation, announced the global introduction of the new Rigaku NEX OL on-line process elemental analyzer at the 64th annual Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy (Pittcon 2013) held March 17 - 21, 2013 at the Pennsylvania Convention Center, Philadelphia, PA, USA. ART also introduced a new compact benchtop energy dispersive X-ray fluorescence (EDXRF) analyzer, the Rigaku NEX QC+, at PittCon.
B568 Standard Test Method for Measurement of Coating Thickness by X-Ray Spectrometry. B890 Standard Test Method for Determination of Metallic Constituents of Tungsten Alloys and Tungsten Hardmetals by X-Ray Fluorescence Spectrometry. B953 Standard Practice for Sampling Magnesium and Magnesium Alloys for Spectrochemical Analysis. B954 Standard Test Method for Analysis of Magnesium and Magnesium Alloys by Atomic Emission Spectrometry. B985 Standard Practice for Sampling Aluminum Ingots, Billets, Castings and Finished or Semi-Finished Wrought Aluminum Products for Compositional Analysis. C125 Standard Terminology Relating to Concrete and Concrete Aggregates. C1109 Standard Practice for Analysis of Aqueous Leachates from Nuclear Waste Materials Using Inductively Coupled Plasma-Atomic Emission Spectroscopy. C1111 Standard Test Method for Determining Elements in Waste Streams by Inductively Coupled Plasma-Atomic Emission Spectroscopy. C1254 Standard Test Method for Determination of Uranium in Mineral ...
A method is described, employing as the sample bottom mud from Linsley Pond, North Branford, Connecticut, for the determination of all detectable exchangeable cations lying between lithium and uranium on the periodic table. Dried (48 h 110°C) and ground (200 mesh) lake mud samples are leached successively with IN, ,i,p,/i,H 6.9 ammonium acetate. Another set of similarly prepared samples are leached with doubly distilled deionized water. The leachate is made up to 100 ml. This volume is then added to a beaker containing two grams of terephthalic acid. The liquid is evaporated on to the water-insoluble terephthalic acid. The dried material is ground and pressed into a pellet. Another set of samples is treated in a similar fashion except that methyl cellulose is used as a substrate. The advantages and disadvantages of the two substrates are discussed. The pressed pellets containing the absorbed detectable exchangeable cations are examined with a G. E. x-ray emission spectroscope for those elements ...
The electronic structures of complex systems have been studied by theoretical calculations of soft x-ray spectroscopies like x-ray photoelectron spectroscopy, near edge x-ray absorption fine structure, and x-ray emission spectroscopies. A new approach based on time dependent density functional theory has been developed for the calculation of shake-up satellites associated with photoelectron spectra. This method has been applied to the phthalocyanine molecule, describing in detail its electronic structure, and revealing the origin of controversial experimental features. It is illustrated in this thesis that the theoretical intepretation plays a fundamental role in the full understanding of experimental spectra of large and complex molecular systems. Soft x-ray spectroscopies and valence band photoelectron spectroscopies have proved to be powerful tools for isomer identification, in the study of newly synthesized fullerene molecules, the azafullerene C48N12 and the C50Cl10 molecule, as well as for ...
The electronic structures of complex systems have been studied by theoretical calculations of soft x-ray spectroscopies like x-ray photoelectron spectroscopy, near edge x-ray absorption fine structure, and x-ray emission spectroscopies. A new approach based on time dependent density functional theory has been developed for the calculation of shake-up satellites associated with photoelectron spectra. This method has been applied to the phthalocyanine molecule, describing in detail its electronic structure, and revealing the origin of controversial experimental features. It is illustrated in this thesis that the theoretical intepretation plays a fundamental role in the full understanding of experimental spectra of large and complex molecular systems. Soft x-ray spectroscopies and valence band photoelectron spectroscopies have proved to be powerful tools for isomer identification, in the study of newly synthesized fullerene molecules, the azafullerene C48N12 and the C50Cl10 molecule, as well as for ...
The element-specific valence- and conduction-band densities of states for the high-dielectric-material CaCu 3 Ti 4 O 12 have been measured using soft x-ray emission and absorption spectroscopies. Ti L a , b ,Cu L a , b , and O K soft x-ray emission spectra of CaCu 3 Ti 4 O 12 were measured with monochromatic photon excitation on selected energies above the Ti and Cu L 2,3 and O K absorption edges, respectively. X-ray absorption spectra were recorded at the same edges. The electronic structure was also calculated using density functional theory employing the full-potential linearized augmented plane-wave method. Excellent agreement is seen between the results of these calculations and the measured x-ray emission and absorption spectra. This agreement is particularly good at the O K edge where the resonant behavior of the x-ray emission spectrum can be attributed directly to s - and p -state emission from valence-band O 2 p states when in resonance with p * and s * conduction-band O 2... ...
Bismuth complex oxides, in particular, bismuth tungstate, have recently attracted attention as promising photocatalytic materials for water treatment processes. In the present work, photocatalytic bismuth tungstate films were prepared by pulsed direct current (DC) reactive magnetron sputtering of Bi and W targets in an Ar/O2 atmosphere onto spherically-shaped glass beads. The uniform coverage of the substrate was enabled by the use of oscillating bowl placed underneath the magnetrons. The atomic ratio of Bi/W was varied through the variation of the power applied to the magnetrons. The deposited coatings were analyzed by the scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), X-ray photoelectron spectroscopy and atomic force microscopy. The photocatalytic properties of the films were studied via the methylene blue (MB) degradation process under artificial (fluorescent light) and natural (sunlight) irradiation, and compared to the photocatalytic
Although the content of Mg2+ in hard tissues is very low (typically 1.5wt%), its incorporation into synthetic hydroxyapatite (HAp) particles and its role in the minerals properties are still subject of intensive debate. A combined experimental-computational approach is used to answer many of the open questions. Mg2+-enriched HAp particles are prepared using different synthetic approaches and considering different concentrations of Mg2+ in the reaction medium. The composition, morphology and structure of the resulting particles are investigated using X-ray photoelectron spectroscopy, energy dispersive X-ray spectroscopy, scanning and transmission electron microscopies, FTIR, and wide-angle X-ray diffraction. After this scrutiny, the role of the Mg2+ in the first nucleation stages, before HAp formation, is investigated using atomistic molecular dynamics simulations. Saturated solutions are simulated with and without the presence of DNA, which has been recently used as a soft template in the ...
The soft x-ray emission from plasma produced in polyacetal and polyethylene capillary discharges excited by current pulses 100 ns full-width half-maximum (FWHM), 50 ns risetime, and peak currents up to 60 kA has been studied. Time-resolved spectra show that intense Cᴠɪ line emission dominates in the polyethylene discharges, peaking shortly after the maximum of the current and vanishing before the end of the current pulse. Polyacetal capillary spectra are dominated by Oᴠɪ lines and show weak Cᴠɪ emission. Plasma density and temperature for the polyethylene discharge were derived from the Stark ...
Soft magnetic composites (SMCs) are designed for the sustainable industrial production of uniform isotropic components with three-dimensional magnetic properties. The nanocoating covering the surface of water-atomized iron powder is the paramount feature of SMC technology that gives the material the high resistivity needed for minimizing the negative effects of eddy currents. An analysis of its initial state/composition on a micro level and any changes during further compaction and heat treatment is thus of great importance. Therefore, a method for the evaluation of composition and thickness of such insulating coatings was developed in this study. High resolution imaging combined with surface analytical and depth profiling techniques (high resolution scanning electron microscopy (HR SEM) with energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy) were used. Analyses were performed on commercially available SMC powder grades having a phosphate-based coating. Depth profiling was
OBJECTIVE: Our purpose was to quantify 36 inorganic chemical elements in aerosols from disposable electronic cigarettes (ECs) and electronic hookahs (EHs), examine the effect of puffing topography on elements in aerosols, and identify the source of the elements. METHODS: Thirty-six inorganic chemical elements and their concentrations in EC/EH aerosols were determined using inductively coupled plasma optical emission spectroscopy, and their source was identified by analyzing disassembled atomizers using scanning electron microscopy and energy dispersive X-ray spectroscopy. RESULTS: Of 36 elements screened, 35 were detected in EC/EH aerosols, while only 15 were detected in conventional tobacco smoke. Some elements/metals were present in significantly higher concentrations in EC/EH aerosol than in cigarette smoke. Concentrations of particular elements/metals within EC/EH brands were sometimes variable. Aerosols generated at low and high air-flow rates produced the same pattern of elements, although ...
In this article we report about the synthesis of superparamagnetic bare Fe₃O₄ nanostructures and core/shell (Fe₃O₄/alginate) nanocomposites by simple low-temperature based method at pH values 5, 9, and 14. The structural morphology and magnetic behavior of Fe₃O₄ nanostructures and core/shell (Fe₃O₄/alginate) nanocomposites (Fe₃O₄/alg NCs) have been investigated by X-ray diffractometer (XRD), Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy (RS), ultraviolet-visible (UV-vis) spectroscopy, transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX) and vibrating sample magnetometer (VSM). The particle size was calculated by TEM measurements and it turns out to be ∼10nm and ∼14nm for bare Fe₃O₄ nanoparticle and Fe₃O₄/alg NCs with core/shell structure, respectively. The magnetic properties of the synthesized products were found to be function of pH at which the synthesis has been done. The synthesized Fe₃O₄ nanoparticle ...
The synthesis of silver nanoparticles (AgNPs) by microorganisms is an area attracting growing interest in nanobiotechnology, due to the applications of these nanoparticles in various products including cosmetics and biosensors, and in the biomedical, clinical, and bioimaging fields as well. Various microorganisms have been found to be able to synthesize AgNPs when silver salts are supplied in the reaction system. The main objectives of this study were to evaluate the efficiency of synthesis of AgNPs by the strain Bacillus methylotrophicus DC3, isolated from the soil of Korean ginseng, a traditionally known oriental medicinal plant in Korea. The AgNPs showed maximum absorbance at 416 nm, when assayed by ultraviolet-visible spectroscopy (UV-vis). The field emission transmission electron micrograph (FE-TEM) results showed that the particles were spherical and 10-30 nm in size. In addition, the product was also characterized by energy dispersive X-ray spectroscopy (EDX), which displayed a 3 keV peak
We report on the plume dynamics of the plasma induced by laser ablation of a swine skeletal muscle tissue sample in different vacuum conditions. Pulses from a transversely excited atmospheric CO2 laser were focused onto a target sample and the induced plasma was allowed to expand in different air pressures. The expansion features were studied using fast photography of the overall visible emission by using a gated intensified charged coupled device. Free expansion and plume splitting were observed at different pressure levels. The expansion of the plasma plume front was analyzed using various expansion models and the velocity of the plume front was estimated. The effect of the number of accumulated laser shots on the crater volume at different ambient air pressures and an elemental analysis of the sample were performed using scanning electron microscopy coupled with energy dispersive X-ray spectroscopy analysis. The surface morphology of the irradiated surface showed that increasing the pressure ...
In this research, TiO2 nanotubes were synthesized by anodized oxidation method and were covered with a hydroxyapatite-silver nanoparticles using photodeposition and dip coating for loading silver nanoparticles and coated hydroxyapatite (HA). The morphological texture of TiO2 nanotube and Ag-HA nanoparticles on TiO2 nanotubes surface were studied by field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDAX analysis) and X-ray diffraction (XRD). The MCF-7 cell lines were treated with concentrations 1, 10 and 100 µg/ml of TiO2 nanotubes and HA/Ag/TiO2 nanotube for 24 and 48h. Finally, the cell viability and IC50% were evaluated using MTT assay. The results show that the HA/Ag/TiO2 has more positive effect on enhancing the cell death compare to TiO2 nanotubes and also exerts a time and concentration-dependent inhibition effect on viability of MCF-7 cells
Fe-W coatings with 4, 16 and 24 at.% of W were electrodeposited under galvanostatic conditions from a new environmental friendly Fe(III)-based glycolate-citrate bath. This work aims to find correlations between composition including the light elements, internal structure of the electrodeposited Fe-Walloys and functional properties of material. The obtained alloys were characterized by Glow Discharge Optical Emission Spectrometry (GD-OES), Scanning Electron Microscopy (SEM) with Energy Dispersive X-ray Spectroscopy (EDS), Transmission Electron Microscopy (TEM), and X-ray Diffraction (XRD). Compositional depth profiles of 10 mm thick coatings obtained by GD-OES show that the distribution of metals is uniform along the entire film thickness, while SEM imaging depicted the presence of cracks and O- and W-rich areas inside the Fe-Wcoating with 4 at.% W. In the samples with 16 and 24 at.% of W, oxygen and hydrogen are present mostly at the surface about 1 mm from the top while traces of carbon are
In this study, the application of a calcium-based bifunctional catalyst/sorbent is investigated in modified chemical looping steam methane reforming (CLSMR) process for in situ CO2 sorption and H2 production. The yttrium promoted Ca-Co samples were synthesized and applied as bifunctional catalysts/sorbent. The influence of reduction temperature (500-750 °C), Ca/Co and Ca/Y ratios (1.5-∞ and 3-18, respectively) and catalyst life time are determined in CLSMR process. The physicochemical transformation of fresh, used and regenerated samples after 16 redox cycles are determined using X-ray powder diffraction (XRD), N2 adsorption-desorption, field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDX) and transmission electron microscopy (TEM) techniques. The effect of yttrium promoter on the structure of catalyst and regeneration step on the reversibility of bifunctional catalyst/sorbent was two important factors. The characterization results revealed that the presence
Advantages and Disadvantages. The course will be delivered by Ilyas Qasim.. Ilyas Qasim holds a PhD in Solid State/Materials Chemistry from the University of Sydney, Australia where he studied Structural and Electronic Phase Transition in Transition Metal Oxides.. Since 2007, Ilyas has been working with materials synthesis and characterisation techniques including X-ray diffraction (XRD), Scanning Electron Microscopy coupled with Energy Dispersive X-ray Spectroscopy (SEM-EDS). He has also hands-on experience in ICP-MS, GC-MS, TGA, TEM, XAS, magnetic and electrical characterisation of solid state materials.. Prior to his current role, Ilyas worked as a research assistant in Seoul National University, South Korea, and as a postgraduate teaching fellow in chemistry teaching laboratories (1st and 2nd year) in the University of Sydney, Australia.. ...
Hydrophilic-activated carbon was prepared by ester hydrolysis reactions, and was characterized by surface area analysis, Fourier transform infrared spectroscopy, scanning electron microscopy energy dispersive X-ray spectroscopy, and X-ray diffraction. Hydrophilic groups that were introduced on activated carbon surface through ethyl acetate hydrolysis in an alkaline environment were more efficient than those introduced with sodium acetate. During adsorption, the hydrophilic groups on modified activated carbon surface bound with water molecules through H-bonding and increased the adsorption capacity of water vapor. The adsorption isotherms of water vapor were well fitted by the Do model. Water molecules generated larger water clusters around the functional groups at 303 and 313 K. In addition, water desorption from the samples was analyzed by thermogravimetry. Water molecules that were hydrogen-bonded to functional groups exhibited higher thermal stability than those adsorbed in the micropore of ...
Amorphous TbFeCo thin films sputter deposited at room temperature on thermally oxidized Si substrate are found to exhibit strong perpendicular magnetic anisotropy. Atom probe tomography, scanning transmission electron microscopy, and energy dispersive X-ray spectroscopy mapping have revealed two nanoscale amorphous phases with different Tb atomic percentages distributed within the amorphous film. Exchange bias accompanied by bistable magneto-resistance states has been uncovered near room temperature by magnetization and magneto-transport measurements. The exchange anisotropy originates from the exchange interaction between the ferrimagnetic and ferromagnetic components corresponding to the two amorphous phases. This study provides a platform for exchange bias and magneto-resistance switching using single-layer amorphous ferrimagnetic thin films that require no epitaxial growth. ...
TY - JOUR. T1 - Synergistic helium and deuterium blistering in tungsten-tantalum composites. AU - Dias, M.. AU - Mateus, A. R.. AU - Catarino, N.. AU - Franco, N.. AU - Nunes, D.. AU - Correia, J. B.. AU - Carvalho, P. A.. AU - Hanada, K.. AU - Sârbu, C.. AU - Alves, E.. N1 - sem pdf conforme despacho. Portuguese Science and Technology Foundation (FCT) - PTDC/CTM/100163/2008 ;PEST-OE/CTM-UI0084/2011 ; PEST-C/CTM/LA0025/2013-14 ; FCT Grant - SFRH/BPD/68663/2010.. PY - 2013. Y1 - 2013. N2 - Tungsten-tantalum composites with 10 and 20 at.% Ta were prepared by ball milling W powder with Ta fibers and by consolidating the milled materials with spark plasma sintering. The composites were implanted at room temperature with He+ (30 keV with a fluence 5 × 1021at/m2) and/or D+ (15 keV with a fluence 5 × 1021 at/m 2) ion beams. The materials were studied by scanning and high-resolution transmission electron microscopy, both coupled with energy dispersive X-ray spectroscopy, and by X-ray diffraction, ...
From 5th to 17th February 2017, we organized the training in "Analytical Methods in Geology" for students of AGH University of Science and Technology from Krakow in the Centre of Education of Slovak Academy of Sciences in Banská Bystrica. AGH management has decided for this external form of education on the basis of positive experiences with our laboratories and a wide range of modern analytical methods. Overall, 24 graduated students of mineralogy, during two one-week courses, got through the intensive theoretical and practical laboratory training in isotope geochemistry, paleolimnologic field methods, X-ray fluorescence spectrometry, X-ray microtomography, microthermometry and geofluids and creation of 3D digital models using terrestrial laser scanner. At the end of the stay, each student prepared the seminar paper on each of analytical method. For its preparation, the students used computers of our library and electronic access to world scientific databases. The training in particular ...
Nanocomposite powders of gadolinium-doped ceria (GDC, Ce0.8Gd0.2O1.9) were synthesized via thermal treatment of the gel formed by contacting ionic solutions of sodium alginate as the jelling template and metal (gadolinium/cerium) nitrates as the starting material. The influence of calcination temperature and sodium alginate loading fraction on the properties of the synthesized GDC nanocomposite powders was investigated. Characterization was performed by energy dispersive X-ray spectroscopy, powder X-ray diffraction, thermogravimetric analysis, Field Emission Scanning Electron Microscopy, Fourier transformed infrared spectroscopy and nitrogen adsorption/desorption analysis. It was observed that the particle size and the surface area of the produced GDC nanocomposite powders are dominantly controlled by the calcination temperature, while the effect of sodium alginate loading fraction is limited by the range of the calcination temperature. In this study, the smallest mesoporous GDC nanocomposite ...
Want to check a specific model? If you own a newer car (2006 to 2009), there is a good chance your car model has been evaluated. Check healthycar.org to see if your car is of low, medium or high concern. Using a hand-held X-ray fluorescence spectrometry device, the groups evaluators detected bromine, chlorine and lead, along with other heavy metals, allergens and known carcinogens. These substances can build up in living things - humans as well as pets - and in the environment over time. Since heat and ultraviolet rays accelerate the release of toxins, drivers are advised to use solar reflectors and park in the shade. Especially in newer cars, roll down the windows and ventilate before you and your pets enter a car that has been baking in the sun. According to the organizations 2006 Automotive Plastics Report Card, "Ford and Honda have made significant improvements since 2005, joining Toyota as leaders in the movement toward using sustainable plastics in indoor auto parts." ...
This application note describes the conventional calibration method of copper ore concentrate analysis and also standardless analysis using the fundamental parameter method. X-ray fluorescence spectrometry is the best method for the analytical requirements of routine analysis to monitor ore grade with high precision, accuracy and rapidity. The Supermini200 from Rigaku provides calibration accuracy with repeatability results that are precise enough to use for daily analysis.
In this paper we present the results of the investigations of nanostructured C-Pd films for hydrogen sensing applications. These C-Pd films were prepared by physical vapor deposition and then annealed in an argon flow at the temperature of 500°C. The structure and morphology of the prepared C-Pd films were investigated using transmission electron microscopy and energy dispersive X-ray spectroscopy. We studied the infiuence of hydrogen on the electrical properties and crystal structure of C-Pd films. It was shown that film resistance changes depended on hydrogen concentration. At lower hydrogen concentration (up to 2 vol.%), the films response increased proportionally to [H2], while above 2 vol.% H2, it was almost constant. This is connected with the formation of a solid solution of hydrogen in palladium at lower H2 concentration and the creation of palladium hydride at higher H2 concentration. X-ray diffraction was used to confirm the formation of Pd-H solid solution and palladium hydride ...
The Third Edition of this established work on chemical instrumentation has been completely rewritten and updated to account for the advances made since the Second Edition came out in 1973. More main methods of measurement are presented, and there is extended coverage of chromatography and electrochemistry. Most of the material is new--including coverage of microprocessors and microcomputers, statistical control of measurement quality, quantification and extraction of information, x-ray fluorescence spectrometry, surface spectrometric techniques, and chromatography and HPLC. The quality and range of the worked examples have been improved, and there are end-of-chapter exercises.
The Third Edition of this established work on chemical instrumentation has been completely rewritten and updated to account for the advances made since the Second Edition came out in 1973. More main methods of measurement are presented, and there is extended coverage of chromatography and electrochemistry. Most of the material is new--including coverage of microprocessors and microcomputers, statistical control of measurement quality, quantification and extraction of information, x-ray fluorescence spectrometry, surface spectrometric techniques, and chromatography and HPLC. The quality and range of the worked examples have been improved, and there are end-of-chapter exercises.
Red mud (RM), an industrial waste from the alumina refinery industry, was used as a support for preparation of Co-oxide-based catalysts (Co/RM). The samples were characterized by N2 adsorption, X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and UV-vis diffusive reflectance spectroscopy. The heterogeneous catalytic activity was evaluated in aqueous phenol degradation using peroxymonosulphate (PMS) as an oxidizing agent. It was found that Co3O4 particles were highly dispersed on the RM surface and that pretreatment of the red mud (RM-T) would significantly influence catalytic activity. Co/RM-T catalysts exhibited high effectiveness in heterogeneous activation of PMS to produce sulfate radicals for phenol degradation compared with Co/RM-NT. Phenol degradation followed first-order kinetics, and activation energies on Co/RM-T and Co/RM-NT are 46.2 and 47.0 kJ/mol, respectively.. ...
Samples of marble from Chillagoe, North Queensland have been analyzed using scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS) and Raman spectroscopy. Chemical analyses provide evidence for the presence of minerals other than limestone and calcite in the marble, including silicate minerals. Some of these analyses correspond to silicate minerals. The Raman spectra of these crystals were obtained and the Raman spectrum corresponds to that of allanite from the Arizona State University data base (RRUFF) data base. The combination of SEM with EDS and Raman spectroscopy enables the characterization of the mineral allanite in the Chillagoe marble.
We report on the fabrication of silicon-reinforced carbon (C:Si) structures by combinatorial pulsed laser deposition to search for the best design for a new generation of multi-functional coated implants. The synthesized films were characterized from the morphological, structural, compositional, mechanical and microbiological points of view. Scanning electron microscopy revealed the presence, on top of the deposited layers, of spheroid particulates with sizes in the micron range. No micro-cracks or delaminations were observed. Energy dispersive x-ray spectroscopy and grazing incidence x-ray diffraction pointed to the existence of a C to Si compositional gradient from one end of the film to the other. Raman investigation revealed a relatively high sp hybridization of up to 80% at 40-48 mm apart from the edge with higher C content. Si addition was demonstrated to significantly increase C:Si film bonding to the substrate, with values above the ISO threshold for coatings to be used in high-loading ...
The current study assesses the root causes of hydrogen blisters on low strength carbon steel equipment. For this purpose, some experiments including hardness test, non-destructive test (NDT), metallography, and fractograpghy are conducted. The microstructure of two blisters is assessed by means of optical microscopy and scanning electron microscopy (SEM). The microstructural studies show that the steel plate has some inclusions and banded ferrite/pearlite structure. The energy dispersive x-ray spectroscopy (EDS) results indicate that these inclusions mainly contain Mn, S, Al, Ca, and Si. The results show that the inclusions and planar imperfections found in the NDT have been the nucleation locations for blisters in the plate. Remediation action plans are recommended to prevent further occurrence and growth of hydrogen blisters.
article{745bf828-876c-4b08-8b49-acb2caf25f0e, abstract = {Calcium precipitation can have a number of effects on the performance of high-rate anaerobic performance including cementing of the sludge bed, limiting diffusion, and diluting the active biomass. The aim of this study was to observe the influence of precipitation in a stable full-scale system fed with high-calcium paper factory wastewater. Granules were examined from an upflow anaerobic sludge blanket reactor (volume 1,805 m(3)) at a recycled paper mill with a loading rate of 5.7-6.6 kgCOD.m(-3).d(-1) and influent calcium concentration of 400-700 gCa(.)m(-3). The granules were relatively small (1 mm), with a 200-400 mum core of calcium precipitate as observed with energy dispersive X-ray spectroscopy. Compared to other granules, Methanomicrobiales not Methanobacteriales were the dominant hydrogen or formate utilisers, and putative acidogens were filamentous. The strength of the paper mill fed granules was very high when compared to ...
The cortices of pieces of Cretaceous amber around the world commonly are constituted by networks of filamentous structures. Based on their morphological characteristics, such structures have previously been classified in different microorganismal groups. Their correct interpretation, however, is of great importance to establish the conditions of the resins burial in the forest litter, and can provide important clues regarding the ecology and environmental conditions of Cretaceous resinous forests. Because these networks of filamentous structures present typical fungal morphological features we conducted a study in order to resolve their origin. The cortices of several pieces of Cretaceous amber from Spain were examined using light and scanning electron microscopy, energy dispersive X-ray spectroscopy, and confocal laser scanning microscopy. This is the first time that Calcofluor white and Wheat germ agglutinin conjugated with fluorescein isothiocyanate have been employed as fungal markers in ...
This thesis describes the application of X-ray fluorescence to the detection of heavy metals in the body. Platinum is a heavy metal of importance in medicine, particularly in oncology, in the form of anti-cancer drugs. These are used against several human tumours including neck and head, ovarian cervical and testicular cancer. Even though successfully and widely used, platinum has undesirable toxic side effects including nephrotoxocity, nausea, vomiting and neurotoxicity. Information about the concentration of the drug in the tumour could be of use in establishing dose-response relationships and in adjusting a patients subsequent doses of the drug to achieve maximum therapeutic effect. A system for the in vivo measurement of platinum in patients treated with chemotherapy has been developed, based on a Tc-99m annular source in back-scattering geometry. The collimator to skin distance was determined for optimum dosimetry and detection limit, and the effect of overlying tissue and tumour volume ...
A number of utility companies have inquired about the nature of contaminants found on the last chance filters, high-pressure system filters and in the fluid itself. Typical examples of these contaminants are shown in Figures 1 and 2. The nature of this contaminant, either in the form of a black substance or an insoluble yellowish gelatinous material, has been investigated by Pall Corporation using proton induced X-ray emission (PIXE), X-ray emission spectroscopy (XES) and fourier transform infrared spectroscopy (FTIR). The results of their investigations are summarized in Table 1. In each case, the fluid was degraded through hydrolysis and exposed to fullers earth or activated alumina. As expected, the presence of phosphorous, calcium, magnesium, aluminum and/or sodium was confirmed in each sample. The calcium/magnesium and aluminum/sodium are the extractable metals found in fullers earth and activated alumina, respectively. The results of the investigations have shown the drawbacks inherent ...
China Portable X-ray Unit (LK-C25) /Dental Portable X Ray Unit, Find details about China New Designportable X-Ray Unit, Popular Portablex-Ray Machine from Portable X-ray Unit (LK-C25) /Dental Portable X Ray Unit - Zhengzhou Linker Medical Equipment Co., Ltd.
Interspinifex ores are developed where pools of sulfide liquid overlie thermally eroded komatiite flows, such that sulfide occupies the space between spinifex olivine plates. Microbeam X-ray fluorescence mapping and 3-D X-ray computed tomography have been used to investigate microstructures and chemical zonation within interspinifex ores from Coronet shoot, Kambalda. Sulfide compositions in the interspinifex space match the composition of the overlying sulfide pool. Aluminous silicate, interpreted as displaced silicate melt, forms a film at the silicate-sulfide interface, locally developing dome-like plumes. The film and plumes are characterized by fine skeletal chromite that diminishes in abundance over about a decimeter downward into the interspinifex zone. These relationships are strong evidence for a primary magmatic origin for this ore type, driven by the strong tendency of dense, inviscid sulfide liquid to infiltrate and melt underlying rocks. Such infiltration-melting interfaces may be a ...
Six Sigma: A scanning electron microscope is used to determine the topographical image or make-up of a sample. Energy Dispersive Spectroscopy (EDS) is a standard method of identifying and quantifying elemental composition of sample surfaces
A Rasmuson Foundation grant of $25,000 has allowed the Alaska State Museum in Juneau to buy an X-ray fluorescence spectrometer. The portable XRF shoots a small, controlled X‑ray beam at an object.
A graphene/poly(3,4-ethylenedioxythiophene) (G/PEDOT) hybrid was prepared by the in situ polymerization of 3,4-ethylenedioxythiophene using the precursor of graphene, graphene oxide, as an oxidant under microwave heating. The G/PEDOT hybrid was characterized by ultraviolet-visible absorption spectroscopy, Fourier transform infrared spectroscopy, atomic force microscopy, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, and electrochemical impedance spectroscopy. The electrochemical properties of G/PEDOT hybrid electrodes were investigated by cyclic voltammetry and galvanostatic charge-discharge measurements. The G/PEDOT hybrid as a supercapacitor electrode material afforded high specific capacitance and good cycling stability (93 % retention after 10 000 cycles at a high current density of 5 A g−1) during the charge-discharge process. A maximum specific capacitance as high as 270 F g−1 at a current density of 1 A g−1 was ...
In this work, Co3O4 nanorods were successfully prepared by microwave-assisted solid state decomposition of rod-like CoC2O4.2H2O precursor within a very short reaction time (6 min) without the use of a solvent/surfactant and complicated equipment. The as-obtained Co3O4 nanorods were fully characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), ultraviolet-visible spectroscopy (UV-Vis), energy-dispersive X-ray spectroscopy (EDX), and magnetic measurements. TEM and SEM images showed that the Co3O4 nanorods have a length of 1-3 µm and diameter of 40-80 nm. FT-IR, XRD, EDX and selected-area electron diffraction demonstrated that the nanorods are composed of pure cubic phase Co3O4. Magnetic measurements at room temperature suggested the existence of a weak ferromagnetic behavior. The optical spectrum indicated two direct band gaps at 2.20 and 3.60 eV with a blue shift compared
The FEI Inspect S SEM is equipped with a tungsten filament, secondary electron detector for standard imaging, a back scattered electron detector, Thermo Noran System Six X-ray microanalysis system (EDS), and a J.C. Nabity Nanometer Pattern Generation Sytem (NPGS) for electron beam patterning and lithography. The SEM will be capable of patterning 80 nm or less line widths. The EDS system provides chemical elemental composition of samples. Additionally the SEM can be operated in environmental mode with variable pressures ranging from 0.6 Torr to 0.08 Torr. Image digital resolution up to 4096 x 3536.. Imaging Modes: Secondary Electron Imaging, Back Scattered Electron Imaging, Low Vacuum Imaging, Energy-Dispersive X-ray Spectroscopy (EDS), and J.C. Nabity E-beam Lithography.. Fees as of February 1st, 2015: Internal $30/hour; Internal Assisted $60/hour; External Assisted $174/hour.. PUBLICATION ACKNOWLEDGEMENT: All SEM images and data were collected in the W.M. Keck Center for Nano-Scale Imaging in ...
A novel red emitting Cs2WO2F4:Mn4+ phosphor was successfully synthesized by a two-step wet chemical method. The crystal structure, morphology, and elemental composition were confirmed by powder X-ray diffraction (XRD), transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDS), res
Titanium dioxide − bismuth tungstate composite materials were prepared by pulsed DC reactive magnetron sputtering of bismuth and tungsten metallic targets in argon/oxygen atmosphere onto anatase and rutile titania nanoparticles. The use of an oscillating bowl placed beneath the two magnetrons arranged in a co-planar closed field configuration enabled the deposition of bismuth tungstate onto loose powders, rather than a solid substrate. The atomic ratio of the bismuth/tungsten coatings was controlled by varying the power applied to each target. The effect of the bismuth tungstate coatings on the phase, optical and photocatalytic properties of titania was investigated by X-ray diffraction, energy-dispersive X-ray spectroscopy (EDX), Brunauer-Emmett-Teller (BET) surface area measurements, transmission electron microscopy (TEM), UV-vis diffuse reflectance spectroscopy and an acetone degradation test. The latter involved measurements of the rate of CO2 evolution under visible light irradiation of ...
Well-dispersed PtSn/C and PtSnO2/C catalysts with anatomic ratio of Pt:Sn (3:1) were deposited onto carbon using a modified alcohol-reduction process for electrochemical oxidation of ethanol. These materials were characterized using energy-dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD). An electrochemical study in theethanol and acid medium showed that the PtSnO2/C catalyst had a better performance compared with the PtSn/C and Pt/C catalysts. The CV analysis indicated that the presence of SnO2 increased the sensitivity of the catalyst to oxidation of acetaldehyde because of its low onset potential for the electrooxidation of adsorbed ethanol and acetaldehyde compared to PtSn/C and Pt/C. Since the activation of C-C bond breaking results in the generation of higher current density (mass activity) at higher potentials, the PtSnO2/C catalyst has been found favourable for the overall oxidation of ethanol.
The frontier electronic structures of a series of organic dye molecules containing a triphenylamine moiety, a thiophene moiety and a cyanoacrylic acid moiety have been investigated by photoelectron spectroscopy (PES), X-ray absorption spectroscopy (XAS), X-ray emission spectroscopy (XES) and resonant photoelectron spectroscopy (RPES). The experimental results were compared to electronic structure calculations on the molecules, which are used to confirm and enrich the assignment of the spectra. The approach allows us to experimentally measure and interpret the basic valence energy level structure in the dye, including the highest occupied energy level and how it depends on the interaction between the different units. Based on N 1s X-ray absorption and emission spectra we also obtain insight into the structure of the excited states, the molecular orbital composition and dynamics. Together the results provide an experimentally determined energy level map useful in the design of these types of ...
The electronic structure of copper sulfides was studied using X-ray absorption at Cu K and L-2,L-3 and S L-2,L-3 edges and X-ray emission spectroscopy at S L-2,L-3 thresholds. The experimental data were compared with results of local density approximation calculations taking into account the calculated valence band contributions and core-level chemical shifts between inequivalent sites. The presence of divalent Cu was detected in CuS with X-ray absorption spectroscopy in the high-energy-resolution fluorescence detection (HERFD) mode. The S L-2,L-3 emission spectrum of CuS was found to be significantly broader than that of Cu2S due to contributions from inequivalent S sites. This difference in the spectral width was used to distinguish between sulfide species formed on the Cu foil exposed to Na2S solutions. The Cu-S interaction processes for Cu films of different thicknesses exposed to Na2S solutions were monitored in situ using X-ray absorption spectroscopy in the HERFD mode at the Cu K edge. It ...
No topic is more fundamental to Chemistry than the nature of the chemical bond. In crystalline solids, the chemical bond gives rise to the electronic bandstructure of the material, this then determines whether the material is a metal, semiconductor, semi-metal, etc.; it determines the optical characteristics, the transport properties and the usefulness of any given crystalline solid. Novel x-ray spectroscopic techniques are now available to probe the electronic structure of crystalline solids, element-by-element and even state-by-state. These synchrotron radiation based methods will be applied to a particular class of crystalline solids to study more fully their basic electronic structure. The electronic structure of a class of crystalline solids will be investigated through a novel application of polarisation dependent synchrotron radiation based resonant soft x-ray emission spectroscopy and x-ray absorption spectroscopies to obtain element specific, symmetry and state selective measurements of ...
System Specifications: Portable X-ray System - SR-130D/55C - 3kWDirect Digital Capture - Fully Automatic Anatomical Programming 100 kV/ 30 mA, 1
This report studies the global atomic spectroscopy market over the forecast period of 2013 to 2018. The market was valued at $4.02 billion in 2013 and is expected to reach $5.5 billion by 2018, growing at a CAGR of 6.4% from 2013 to 2018.. Over the years, the atomic spectroscopy market has witnessed a steady growth along with an increase in its application horizon. The wide applications of atomic spectroscopy are witnessed in various industries such as food and beverage testing, environmental testing, pharmaceutical, biotechnology, industrial chemistry, and mining, among others. X-ray fluorescence, Atomic absorption, X-ray diffraction, Inductively coupled plasma, Inductively coupled plasma-mass spectrometry amongst others are the commonly used atomic spectroscopy technologies. Request for PDF Brochure: http://www.marketsandmarkets.com/pdfdownload.asp?id=174401666. Technologies such as X-ray fluorescence and atomic absorption currently dominate the atomic spectroscopy market. However, the growing ...
Authors: EVA MARGUI, MANUELA HIDALGO Abstract: Liquid phase microextraction (LPME) procedures have been widely used in combination with atomic and emission spectroscopic techniques for the isolation and preconcentration of trace elements. However, its application in combination with total reflection X-ray spectrometry (TXRF) is still scarce. In this paper, we evaluate the possibilities and drawbacks of a two-phase hollow fiber LPME procedure in combination with TXRF for the simultaneous determination of trace amounts of Cr, Ni, Cu, Zn, Pb, and Cd in aqueous samples. After extraction of the analytes by using the optimum conditions (sample volume: 25 mL, complexing agent: APDC, organic solvent: hexylbenzene, extraction time: 2 h, extraction speed: 660 rpm), 10 $\mu $L of the preconcentrated sample was deposited on a preheated quartz reflector, dried on a hot plate at 80 $^{\circ}$C, and analyzed by TXRF. Using such conditions, limits of detection lower than 3 $\mu $g L$^{-1}$ were obtained for all ...
A754/A754M - 96(2000) Standard Test Method for Coating Weight (Mass) of Metallic Coatings on Steel by X-Ray Fluorescence , aluminum zinc-coating, coating, coating weight (mass), coatings-metallic, metallic coated, sheet, steel sheet, tin mill products, x-ray fluorescence, zinc coating, zinc-5% aluminum coating,
The Mg-, O-, and Al--ray emission spectra and also the -ray photoelectron spectrum of spinet, MgAlO, are reported. A model for the bonding is derived using simple molecular-orbital theory, which is adequate for a qualitative rationalisation of the observed spectra. The shape of particular -ray emission peaks is sho Celebrating the 150th anniversary of the German Chemical Society
Raw materials and products such as alloys, solders, sterling silver and gold bearing are initially tested using the X-Ray fluorescence technique. An initial scan on elements in a recycling lot is performed using the XRF equipment.. ...
We provide a comprehensive census of the near-infrared (NIR, 0.8-2.4 μm) spectroscopic properties of 102 nearby (z , 0.075) active galactic nuclei (AGN), selected in the hard X-ray band (14-195 keV) from the Swift-Burst Alert Telescope survey.With the launch of the James Webb Space Telescope, this regime is of increasing importance for dusty and obscured AGN surveys. We measure black hole masses in 68 per cent (69/102) of the sample using broad emission lines (34/102) and/or the velocity dispersion of the Ca II triplet or the CO band-heads (46/102). We find that emission-line diagnostics in the NIR are ineffective at identifying bright, nearby AGN galaxies because [Fe II] 1.257 μm/Paβ and H2 2.12 μm/Brγ identify only 25 per cent (25/102) as AGN with significant overlap with star-forming galaxies and only 20 per cent of Seyfert 2 have detected coronal lines (6/30). We measure the coronal line emission in Seyfert 2 to be weaker than in Seyfert 1 of the same bolometric luminosity suggesting ...
The dense Z-pinch project at Imperial College is aimed at achieving radiative collapse to high density in a hydrogen plasma, and also to study plasmas close to controlled fusion conditions. To this end, the MAGPIE generator (2.4 MV, 1.25, and 200 ns) has been built and tested, and is now giving preliminary experimental data at 60% of full voltage for carbon and CD2 fibers. These discharges are characterized by an initial radial expansion followed by the occurrence of m = 0 structures with transient X-ray emission from bright spots. Late in the discharge a disruption can occur, accompanied by hard X-ray emission from the anode due to an energetic electron beam and, in the case of CD2 fibers, a neutron burst. Concomitant theoretical studies have solved the linear stability problem for a Z-pinch with large ion Larmor radii, showing that a reduction in growth rate of m = 0 and m = 1 modes to about 20% of the magnetohydrodynamic (MHD) value can occur for a parabolic density profile when the Larmor ...
The FluoTime 300 features an intuitive and easy-to-use system software. All measurement data files and all related analysis results are stored in a clearly arranged workspace, which resembles the familiar tree structure of a hard drive directory. Data dependencies are thus visible at first glance. Steady-State and time-resolved measurements can be performed alternatively from the same software interface.The software features three data acquisition possibilities. Specifically designed application wizards guide the user through the necessary optimization steps for performing typical measurement tasks such as fluorescence lifetime measurements, anisotropy measurements, collection of emission spectra or Time-Resolved Emission Spectra (TRES). For those familiar with the technique, a customized measurement mode for full instrument control is also available. More sophisticated application tasks, like, for example, alternating between time-resolved decays and steady-state spectra at different ...
Instrumentation The LS55 Perkin Elmer Fluorescence Spectrometer, 230V uses a pusled Xenon source to measure fluorescence, phosphorescence, chemi- and bio- luminescence. The FL WinLab™ software has different modes operation like Scan, TimeDrive, and Ratio Data Collection, increasing the versatility of the instrument. The excitation and emission monochromators can be used independently or simultaneously. The instrument also has the ability to prescan the sample to determine the excitation peak and maximum emission. Included with the LS55 Perkin Elmer Fluorescence Spectrometer, 230V is a single-cell sample holder that can hold up to a 1cm pathlength cell and has the option of stirring. The automated polarizer has two filter wheels that have both a horizontal and vertical polarizing element. The polarizer is controlled by the software. Applications ...
Instrumentation The LS55 Perkin Elmer Fluorescence Spectrometer, 230V uses a pusled Xenon source to measure fluorescence, phosphorescence, chemi- and bio- luminescence. The FL WinLab™ software has different modes operation like Scan, TimeDrive, and Ratio Data Collection, increasing the versatility of the instrument. The excitation and emission monochromators can be used independently or simultaneously. The instrument also has the ability to prescan the sample to determine the excitation peak and maximum emission. Included with the LS55 Perkin Elmer Fluorescence Spectrometer, 230V is a single-cell sample holder that can hold up to a 1cm pathlength cell and has the option of stirring. The automated polarizer has two filter wheels that have both a horizontal and vertical polarizing element. The polarizer is controlled by the software. Applications ...
|div class=row| |div class=col-md-10 description| |div class=row| |div class=col-md-10 description| |ul| |li|The Shimadzu RF 6000 has a 150Watt Xenon lamp|/li| |li|Dual monochromators for excitation and emission wavelengths with a range from
CRB GmbH | independant & accredited | Since 1992 your laboratory for asbestos analysis and testing raw- and building materlas by X-ray fluorescence analysis
Large scatters occur in composition measurements using wavelength-dispersive X-ray spectroscopy (WDS) when only a few precipitates are captured in the X-ray sampling volume, because the measured signal represents an averaged composition of the precipitate and the matrix phase in the sampling volume. The scatters become small when sufficient numbers of precipitates are captured and solidification segregation in the sampling volume is not significant. Monte Carlo simulations were carried out to obtain the X-ray signals from the matrix gamma and precipitated gamma phases in as-cast Ni-base superalloys using different beam sizes for given gamma precipitate sizes. The optimum beam size in relation to the precipitate size can be predicted for accurate composition measurements. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.. ...
50: "Resonant soft x-ray emission and x-ray absorption studies on Ga1-xMnxN grown by pulsed laser deposition", Satheesh Krishnamurthy, Brian Kennedy, Fintan McGee, M. Venkatesan, J.M.D. Coey, James G. Lunney, Timothy Learmonth, Kevin E. Smith, Thorsten Schmitt and Cormac McGuinness, physica status solidi (c), 8(5), 1608-1610, 2011. [doi] 49: "Soft x-ray spectroscopy study of the element and orbital contributions to the electronic structure of copper hexadecafluoro-phthalocyanine", L. F. J. Piper, S. W. Cho, Y. Zhang, A. DeMasi, K. E. Smith, A. Y. Matsuura and C. McGuinness, Physical Review B: Condensed Matter and Materials Physics, 81 (4), 045201:1-13, 2010. [doi] 48: "X-ray magnetic circular dichroism and reflection anisotropy spectroscopy Kerr effect studies of capped magnetic nanowires", J. P. Cunniffe, D. E. McNally, M. Liberati, E. Arenholz, C. McGuinness, and J. F. McGilp, physica status solidi (b), 247(8), 2108-2112, 2010. [doi] 47: "Adsorption of lead phthalocyanine on the ...
McWilliams, A., Flanagan, J., Gutknecht, W., & Jayanty, R. K. (2003, April). Assuring Comparibility between Multiple X-ray Fluorescence Instruments used in the PM2.5 Chemical Speciation Program. Presented at , .. ...
The US PTO has granted Icagen, Inc. a new patent for its XRpro X-ray fluorescence technology covering its application to the development of biomarkers
NEC 5U Pelletron, operating as a high brightness source of light ions operating at charging potentials of 0.5 to 5 MeV for Ion Implantation with the following capabilities: Rutherford Backscattering (RBS), Proton Induced X-ray emission (PIXE), Ion Beam Induced Charge measurements (IBIC), Channelling Contrast Microscopy (CCM), Scanning Transmission Ion Microscopy (STIM ...
XRF analyzers use X-ray fluorescence to identify the elements contained with a sample material. Learn the physics and procedures behind XRF technology.
An optical alignment system for aligning a film cassette carrying grid cassette with an x-ray source of a portable x-ray apparatus. To facilitate accurate alignment of the central x-ray beam of the x-ray source of a portable x-ray apparatus with a focused grid in a clinical setting, the present invention uses a light projector and a reflector device. The light projector is substantially fixed relative to the x-ray source and projects a spot or line of light on the surface of the grid cassette. The reflector device, which can be temporarily or permanently fixed to the grid cassette, includes a reflector surface and an image surface. Images of the incident light spot or line and of the reflected light spot or line are formed on the image surface, and the distance between the images indicates the magnitude of angulation alignment error between the grid cassette and the x-ray source. When beam alignment is accurate, the incident light spot or line and reflected light spot or line will be substantially
Words That End In xes: addaxes,administratrixes,admixes,aerotaxes,affixes,affluxes,amphimixes,anaphylaxes,anaptyxes,annexes,antefixes,anthelixes,anthraxes,anticlimaxes,antihelixes,apexes,apomixes,apoplexes,appendixes,aptery
This is the default operator. It will be used if there is no Boolean operator between two terms. For example: default document is the same as default AND document. In this case both terms need to exist within a listing to find a match on that listing.The + character is synonymous with using AND. OR ...
Explore the billions of dollars special interest groups are spending on lobbying in Washington, D.C., -- and on what -- at OpenSecrets.org.
Specifically, the beamline offers high energy resolution fluorescence detected (HERFD) XAS, range-extended EXAFS, (non-)resonant XES, and resonant IXS. The resolving power (solid angle) of the spectrometer can be varied between 2500 (0.15sr) and 20000 (0.01sr) by adjusting the analyzer crystal bending radius. The detection limit may be below a monolayer (1 mM, 10 ppm) for XANES studies. Various furnaces, cryostats and in-situ cells from the ESRF sample environment pool can be mounted. [1] Coord. Chem. Rev. 249 65-95 (2005). [2] Eur Phys J-Spec Top 169 207-214 (2009). [3] J. Am. Chem. Soc. 131 13161-13167 (2009). [4] Journal of the American Chemical Society 132 2555-2557 (2010). [5] Physical Review Letters 105 037202 (2010). ...
We have measured the production of hν ⩾ 10 keV x rays from low-density, Ge-doped aerogel targets at the OMEGA laser (Laboratory for Laser Energetics, University of Rochester). The targets were 1.2mm long by 1.5mm diameter beryllium cylinders filled with Ge-doped (20 atomic percent) SiO2 aerogel. The doped-aerogel density was 4.8 or 6.5 mg/cc. These targets are a major advance over previous doped aerogels: instead of suspending the dopant in the SiO2 matrix, the Ge atoms, with chemistry similar to Si, are incorporated directly in the matrix. Forty beams of the OMEGA laser (λ = 351 nm) illuminated the two cylindrical faces of the target with a total power of approximately 18 TW. The laser interaction strongly ionizes the target (ne/ncr⩽ 0.1-0.2), and allows the laser-bleaching wave to ionize supersonically the high-Z emitter ions in the sample. Ge K-shell x-ray emission was spectrally resolved with a two-channel crystal spectrometer and recorded with temporal resolution with a set of ...
A shielding disk for managing x-ray emission form a stationary anode x-ray tube is disclosed. The stationary anode x-ray tube includes an anode housing and a stainless steel can that together form an evacuated enclosure and respectively contain a stationary anode and a cathode assembly. The shielding disk, comprised of tungsten, is interposed between the anode housing and the can, and is formed with a region, such as a hole, formed through a central portion thereof. During tube operation, electrons pass through the shielding disk hole to impact a target surface on the anode and produce x-rays. Those x-rays that do not pass through a window defined in the anode housing to exit the tube but instead emanate toward the can, are intercepted and absorbed by the shielding disk before entering the can. This results in a reduced need for lead shielding disposed about external surfaces of the x-ray tube.
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Referred to by ATEL #: 2418, 2423, 2434. We report Swift satellite X-ray (XRT) and SMARTS optical photometry and spectroscopy of KT Eri. The nova was discovered on 2009 November 25.536 UT but was present in outburst on sky patrol images taken on 2009 November 14.572 (IAUC # 9098 ) which we take as t = 0 days here. Swift observations of KT Eri commenced on 2009 November 27 UT (day 13.1). No X-ray emission was detected with the XRT until day 39.9, at which time a relatively hard X-ray source was seen (all but one count above 1 keV), as was the case on day 47.5. By the time of the next observation on day 55.5, excess soft emission (below ~0.5 keV) was apparent, with a count rate of 0.019 +/- 0.003 cps. This could be modelled with a BB of kT ~ 25 eV. The X-ray source remained around 0.03-0.05 cps and consistently soft (comparing the 0.3-1 and 1-10 keV bands) between days 60.3 and 62.5 (BB kT ~ 45 eV). On day 64.1 the source was at a similar count rate, the soft emission could be fit by a BB of kT ~ ...