نتایج جستجو برای: dispersive spectrometer

تعداد نتایج: 38910  

Journal: :Scanning 2013
Dale E Newbury Nicholas W M Ritchie

Scanning electron microscopy/energy dispersive X-ray spectrometry (SEM/EDS) is a widely applied elemental microanalysis method capable of identifying and quantifying all elements in the periodic table except H, He, and Li. By following the "k-ratio" (unknown/standard) measurement protocol development for electron-excited wavelength dispersive spectrometry (WDS), SEM/EDS can achieve accuracy and...

2016
Yanyan Qin Yilian Li Zhen Tian Yangling Wu Yanping Cui

A constant current deposition method was selected to load highly dispersed Pt nanoparticles on TiO2 nanotubes in this paper, to extend the excited spectrum range of TiO2-based photocatalysts to visible light. The morphology, elemental composition, and light absorption capability of as-obtained Pt/TiO2 nanotubes electrodes were characterized by FE-SEM, energy dispersive spectrometer (EDS), X-ray...

2014
D. C. Meier

The chief product of an analytical laboratory quality assurance (QA) program, ultimately, is confidenceconfidence that the analysis of any specimen sent to any laboratory participating in the program will be consistent, correct within tolerance, and interchangeable with equivalent analyses of related specimens performed by any other laboratory in the program. In order to maximize confidence, t...

2009
Stephen L. O'Dell Ralf K. Heilmann Minseung Ahn Mark W. Bautz Rick Foster David P. Huenemoerder Herman L. Marshall Pran Mukherjee Mark L. Schattenburg Norbert S. Schulz

We present a high-resolution soft x-ray grating spectrometer concept for the International X-Ray Observatory (IXO) that meets or exceeds the minimum requirements for effective area (> 1, 000 cm for E < 1 keV) and spectral resolution (E/ΔE > 3, 000). At the heart of the spectrometer is an array of recently developed highefficiency blazed transmission gratings, the so-called critical-angle transm...

2017
Guilei Wang Jun Luo Changliang Qin Renrong Liang Yefeng Xu Jinbiao Liu Junfeng Li Huaxiang Yin Jiang Yan Huilong Zhu Jun Xu Chao Zhao Henry H. Radamson Tianchun Ye

In this study, the integration of SiGe selective epitaxy on source/drain regions and high-k and metal gate for 22 nm node bulk pMOS transistors has been presented. Selective Si1-x Ge x growth (0.35 ≤ × ≤ 0.40) with boron concentration of 1-3 × 1020 cm-3 was used to elevate the source/drain. The main focus was optimization of the growth parameters to improve the epitaxial quality where the high-...

2014
Zhou Di Pang Li-Xia Qi Ze-Ming Jin Biao-Bing Yao Xi

A novel NaAgMoO4 material with spinel-like structure was synthesized by using the solid state reaction method and the ceramic sample was well densified at an extreme low sintering temperature about 400°C. Rietveld refinement of the crystal structure was performed using FULLPROF program and the cell parameters are a = b = c = 9.22039 Å with a space group F D -3 M (227). High performance microwav...

Journal: :Sensors 2021

Near Infrared (800–2500 nm) spectroscopy has been extensively used in biomedical applications, as it offers rapid, vivo, bed-side monitoring of important haemodynamic parameters, which is especially critical care settings. However, the choice NIR spectrometer needs to be investigated for both dual beam dispersive spectrophotomer and FTNIR have their own advantages disadvantages. In this study, ...

Journal: :Journal of the American Academy of Audiology 2007
Michael Valente Jamie H Cadieux Laura Flowers John G Newman Juergen Scherer Greg Gephart

Three hundred twenty zinc-air batteries representing four manufacturers (Energizer, Power One, Duracell, and Ray-O-Vac) and four cell sizes (10, 312, 13, and 675) were exposed in a salt spray fog apparatus for 2.5, 5.5, 24, 48, and 72 hours. At the conclusion of each exposure, the batteries were rated blindly for the presence of rust by four experienced audiologists using a four point rating sc...

Journal: :Combustion Engines 2023

This paper presents an analysis of six sets engine valves, each set consisting one exhaust valve and intake valve. Each pair valves was used in with different displacement mileage. The were subjected to microscopic analysis, hardness measurement chemical composition using a glow discharge spectrometer energy dispersive spectroscopy (EDS). design materials the showed that both their present form...

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