Results 241 to 250 of about 91,828 (299)
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Petroleum Science and Technology, 2006
The modification of paraffin wax by way of physical concoction and chemical oxidization was discussed. All the indexes of the modified paraffin wax were close to those of natural bees wax. The best catalyst was chosen and optimum operational conditions and the thermal effects of the reaction were determined on the laboratory measure.
Xiao Li +4 more
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The modification of paraffin wax by way of physical concoction and chemical oxidization was discussed. All the indexes of the modified paraffin wax were close to those of natural bees wax. The best catalyst was chosen and optimum operational conditions and the thermal effects of the reaction were determined on the laboratory measure.
Xiao Li +4 more
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2015
Despite the rapid expansion of molecular and genomic techniques, anatomical and structural analyses are often crucial to answer biological questions. The success of microscopical examinations of cells, tissue, and organs depends on the nature, size, and orientation of the specimen.
Claudio Stasolla, Edward C. Yeung
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Despite the rapid expansion of molecular and genomic techniques, anatomical and structural analyses are often crucial to answer biological questions. The success of microscopical examinations of cells, tissue, and organs depends on the nature, size, and orientation of the specimen.
Claudio Stasolla, Edward C. Yeung
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Chromatographic analysis of paraffinic waxes
Journal of Chromatography A, 1978Abstract Gel permeation and gas chromatographic analyses of crude paraffinic waxes are reported. Molecular weights ( M n and M w and molecular-weight distributions of crude paraffinic waxes containing different amounts of oil have been determined using a gel permeation chromatographic calibration curve for n-paraffins.
J.M. Sosa, L. Lombana, L. Petit
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Fractionation of Paraffin Wax Mixtures
Industrial & Engineering Chemistry Research, 2000Experimental results for the supercritical fluid extraction (SCFE) of paraffin wax using supercritical carbon dioxide are presented and compared with short path distillation (SPD). A simple simulation algorithm is presented and used to simulate SCFE cases.
James C. Crause, Izak Nieuwoudt
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Development of Leather Wax by Oxidized Paraffin Wax
Petroleum Science and Technology, 2010Abstract A mass proportion paraffin and microcrystalline wax was adopted as raw material, and under certain conditions a catalyzed oxidation reaction took place, in which a sample with qualities and performance similar to that of natural carnauba wax was obtained.
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Determination of acidity of paraffin wax
Chemistry and Technology of Fuels and Oils, 19721. The error has been determined in the water extraction method of determination of acidity of paraffin wax, and it has been demonstrated that this method cannot be used for the quantitative assessment of the content of sulfuric acid or alkali in wax finished by the sulfuric acid treating process. 2. Two methods have been studied for the
V. S. Glukhov +3 more
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Solubility of paraffin wax in kerosene
Fuel, 1977Abstract The solubility of fully refined paraffin wax (51–54 °C m.p.) in a commercial kerosene has been determined and compared with theoretical and empirical prediction equations. Over the limited range of these experiments the experimental results and the theoretical and empirical curves show similar trends; at concentrations up to about 10 wt ...
Jón S. Gudmundsson, T.Reg Bott
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Ionization of Paraffin Wax by Beta-Radiation
Journal of Applied Physics, 1948This is a quantitative experimental study of the primary ionization of paraffin wax by beta-radiation. Electrons emitted by uranium and carbon 14 were used. Interpretation, by means of a simple theory, of experimental data on the electrical conductivity permits evaluation of the ionic mobility in paraffin and the efficiency of ion-pair production. Only
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Analysis of Paraffin Wax in Fire Remains
Journal of Forensic Sciences, 1975Abstract Candles are sometimes used for arson because of fairly predictable delay in ignition of other combustibles as the candle burns down. Also, they are easily consumed in the resulting fire. It has been known that residues of paraffin often survive a fire and can be detected by chemical or physical means.
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UNUSUAL USES OF PARAFFIN-WAX DRESSINGS
JAMA: The Journal of the American Medical Association, 1923Case 1. —V. R., a girl, aged 8, was scalded by boiling water during the spring of 1922. The wound had healed with much cicatrization of the elbow and the adjacent portions of the arm, and with almost complete fixation in flexion of the elbow. May 7, 1923, I removed about a square inch of scar tissue contiguous to the healthy skin, and dressed the ...
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