Zobrazeno 1 - 10
of 24
pro vyhledávání: '"John W. Diehl"'
Autor:
Abdu K Musubire, David B. Meya, John W Diehl, Nicole Stephens, Mahsa Abassi, Astro-Cm Team, Katherine Huppler Hullsiek, David R. Boulware, Michael Okirwoth, Joshua Rhein
Publikováno v:
Open Forum Infectious Diseases
Background Cryptococcus is the commonest cause of adult meningitis in Africa, with 50%–70% experiencing increased intracranial pressure. Cerebral oximetry is a noninvasive near-infrared spectroscopy technology to monitor percent regional cerebral t
Autor:
John W. Diehl
Publikováno v:
Techniques in Foot & Ankle Surgery. 10:2-6
Autor:
John W. Diehl, Frank P. Disanzo
Publikováno v:
Journal of Chromatographic Science. 45:690-693
A method for determining total biodiesel methyl and ethyl ester content in diesel fuels by supercritical fluid chromatography-flame ionization detection (SFC-FID) is developed. A silica column typically used for determining aromatics in conventional
Autor:
Frank P. Di Sanzo, John W. Diehl
Publikováno v:
Journal of Chromatography A. 1080:157-165
Valve based/flow modulated comprehensive two-dimensional gas chromatography–flame ionization detection (GC × GC–FID) was used for quantification of C 6 through C 12 aromatic hydrocarbons by carbon number in gasolines. A 0.53 mm i.d. non-polar fi
Publikováno v:
Analytical Chemistry. 67:2015-2019
The total aromatic contents of gasolines as well as 25 individual gasoline-range aromatic hydrocarbons were quantitated by GC/FT-IR with 1,2-dimethoxyethane as internal standard. Reconstructed selective wavelength chromatograms (SWCs) were used for e
Autor:
Daniel C. Stanley, Ramesh K. Sharma, M. Yagelowich, Edwin S. Olson, Harkishan Singh, John W. Diehl, Mark J. Heintz
Publikováno v:
Fuel. 72:1687-1693
The utilization of enzymes in non-aqueous solvents was explored for the conversion of coal-derived materials to oil-soluble derivatives for use as fuels. A novel three-step process was developed: 1. (1) an initial low-severity conversion to a form th
Publikováno v:
Analytical Chemistry. 65:2493-2496
Benzene, toluene, ethylbenzene, and xylenes (BTEX) in gasolines were determined by isotope dilution GC/FTIR with the perdeuterated analogs of the analytes as internal standards (ISTD). Careful selection of frequencies for selective absorbance reconst
Publikováno v:
Analytical Chemistry. 64:3202-3205
In response to clean fuel legislation, research is underway in the petroleum industry to develop fuels which reduce vehicle exhaust emissions. Part of this effort is the addition of certain ethers and alcohols such as methyl tert-butyl ether (MTBE) a
Publikováno v:
European journal of mass spectrometry (Chichester, England). 10(2)
We report the first coupling of supercritical fluid chromatography (SFC) with field ionization time-of-flight high-resolution mass spectrometry (FI-ToF HRMS), in parallel with ultraviolet (UV) detection and flame ionization detection (FID), for rapid
Autor:
FP Di Sanzo, John W. Diehl
Publikováno v:
Journal of ASTM International. 2:12989
The selective detection of organo-compounds containing hetero-atoms is used extensively in the petroleum industry for process control (sulfur, nitrogen, etc.) and additives in fuels (sulfur, nitrogen, oxygen, phosphorous, etc.). The most common selec