نتایج جستجو برای: atomic emission spectroscopy
تعداد نتایج: 417183 فیلتر نتایج به سال:
Abstract Process monitoring and control methods during direct metal deposition (DMD) ensure consistent manufacturing quality of the product. Naturally occurring optical process emissions provide selective specific element lines, which can be investigated by spectrometers. However, DMD processes are mainly characterized thermal conduction. Hence, resulting emission lines have low intensities. Th...
In an inductively-coupled H2-Ar plasma at a total pressure of 1.5 Pa the influence of the electrode cover material on selected line intensities of H, H2, and Ar are determined by optical emission spectroscopy and actinometry for the electrode cover materials stainless steel, copper, tungsten, Macorr, and aluminum. Hydrogen dissociation degrees for the considered conditions are determined experi...
Tin-doped indium oxide (ITO) films with Sn/In atomic ratios in the range 0-0.1 were synthesized by electrochemically assisted deposition (EAD). The process involves a fast one-step cathodic deposition of a highly crystalline In-Sn hydroxide (InSnOH) film followed by thermal conversion into ITO at 300 C. The cathodic precipitation of InSnOH is preceded by formation of an In-Sn complex in solutio...
This study, investigates the effect of bias voltage on structural changes of diamond-like carbon thin film created by ion beam deposition is investigated. For this purpose, the bias voltage in the values of 0 V, -50 V, -100 V and -150 V on the AA5083 aluminum alloy was considered. Raman spectroscopy was used to evaluate structural. Influence of the bias voltage on the thickness and roughness of...
Laser-induced Breakdown spectroscopy was applied for the elemental analysis of aerosols. Particular care has been taken in optimizing the time resolution of the LIBS spectra and the detection limit of the technique has been evaluated for Na, Ca and Mg atoms. The applicability of the technique has been extended to the case of fly ash generated from coal combustion. Introduction The analysis of a...
We present far-IR/sub-mm imaging and spectroscopy of 49 Ceti, an unusual circumstellar disk around a nearby young A1V star. The system is famous for showing the dust properties of a debris disk, but the gas properties of a low-mass protoplanetary disk. The data were acquired with the Herschel Space Observatory PACS and SPIRE instruments, largely as part of the “Gas in Protoplanetary Systems” (G...
Proper disposal of construction and demolition wastes (CDW) has received wide attention recently due to significantly large quantities of waste streams collected from razed or retrofitted buildings in many metropolitan regions. Burning the combustible fractions of CDW (CCDW) and possibly recovering part of the heat content for economic uses could be valuable for energy conservation. This paper ...
We have obtained Spitzer IRS 5.5Y35 m spectroscopy of the debris disk around Pictoris. In addition to the 10 m silicate emission feature originally observed from the ground, we also detect the crystalline silicate emission bands at 28 and 33.5 m. This is the first time that the silicate bands at wavelengths longer than 10 mhave ever been seen in the Pictoris disk. The observed dust emission is ...
The concentrations of five essential elements and six potentially toxic elements were determined in seven organs collected at autopsy from 30 human subjects. Elemental analyses were carried out by graphite furnace atomic absorption spectroscopy, and inductively coupled plasma emission spectroscopy, and inductively coupled plasma mass spectroscopy, and concentrations in fresh and formalin-fixed ...
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