Results 201 to 210 of about 48,067 (261)
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Crystalline Behavior of Paraffin Wax
The Journal of Physical Chemistry B, 2022Paraffin wax deposition has long been a vexing problem in industry. Especially, in offshore oil production, paraffin wax deposits and clogs pipes and containers because of low temperature, causing severe economic loss. It has been known that the crystallization of n-alkanes mainly causes the deposition of paraffin wax, which is necessary to understand ...
Junfeng Wang +5 more
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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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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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The isomerization of the hydrocarbons of paraffin wax
Petroleum Chemistry U.S.S.R., 1962Abstract 1. 1. By catalytic isomerization, the solid paraffins of sulphur-containing petroleum oils have yielded low-setting paraffinic hydrocarbons with an iso structure which are of interest for the production of fuels and oils with new ...
L ZHERDEVA +6 more
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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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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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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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