نتایج جستجو برای: wet chemistry method
تعداد نتایج: 1753672 فیلتر نتایج به سال:
Wet chemistry analyses done for quality control purposes in wheat and fl our processing are time-consuming. Near-infrared spectroscopy (NIRS) as an alternative technology to conventional methods allows us to obtain results in a few seconds. In this study, NIRS was used in the development of calibration models for protein, wet and dry gluten contents and Zeleny sedimentation of fl ours from the ...
Electrochemically Enhanced Wet Cleaning of Ru Capping Thin Film for EUV Lithography Reflector Hyungtak Seo, Jeong Y. Park, Ted Liang, and Gabor A. Somorjai Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA Department of Chemistry, University of California, Berkeley, California 94720, USA Intel Corporation, Components Research, Technology, and Ma...
The kraft pulps produced from heartwood and sapwood of Eucalyptus globulus at 130 oC, 150 oC, and 170 oC were characterized by wet chemistry (total lignin as sum of Klason and soluble lignin fractions) and pyrolysis (total lignin denoted as py-lignin). The total lignin content obtained with both methods was similar. In the course of delignification, the py-lignin values were higher (by 2 to 5%)...
In this study, we present the response of model results to different scientific treatments in an effort to quantify the uncertainties caused by the incomplete understanding of mercury science and by model assumptions in atmospheric mercury models. Two sets of sensitivity simulations were performed to assess the uncertainties using modified versions of CMAQ-Hg in a 36-km Continental United State...
The Wet Chemistry Laboratory on the Phoenix Mars Lander performed aqueous chemical analyses of martian soil from the polygon-patterned northern plains of the Vastitas Borealis. The solutions contained approximately 10 mM of dissolved salts with 0.4 to 0.6% perchlorate (ClO4) by mass leached from each sample. The remaining anions included small concentrations of chloride, bicarbonate, and possib...
The introduction of the dimension of green chemistry into the assessment of analytical methods should be a natural development trend in chemistry and should coincide with its general policy. Some of the principles of green chemistry—such as prevention of waste generation; safer solvents and auxiliaries; design for energy efficiency; safer chemistry to minimize the potential of chemical accident...
We demonstrate wide-range diameter modulation of vertically aligned single-walled carbon nanotubes (SWNTs) using a wet chemistry prepared catalyst. In order to ensure compatibility to electronic applications, the current minimum mean diameter of 2 nm for vertically aligned SWNTs is challenged. The mean diameter is decreased to about 1.4 nm by reducing Co catalyst concentrations to 1/100 or by i...
Moisture ingress is one of the major damaging factors for building material. Today, the only approved way to assess such damages is the oven-drying Darr-method, which is essentially destructive. At BAM substantial progress has been made using the geophysical complex resistivity (CR) method, which can be applied non-destructively and provides spatial information along 2D sections rather than pun...
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