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1. |
THE SORPTION OF SOAP BY TEXTILE FIBERS |
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Canadian Journal of Research,
Volume 28f,
Issue 3,
1950,
Page 51-61
A. S. Weatherburn,
G. R. F. Rose,
C. H. Bayley,
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摘要:
The sorption of the sodium soaps of lauric, myristic, palmitic, stearic, and oleic acids from aqueous solutions by various textile fibers has been measured. The sorption of both the fatty acid and alkali components of the soaps by dull acetate rayon and dull nylon fibers was essentially the same as that shown by the corresponding bright (undelustered) fibers, while dull viscose rayon sorbed considerably more fatty acid than the bright fiber. In general, the order of increasing sorption was: cotton, nylon, acetate, bright viscose, dull viscose, and wool. Of the saturated soaps, the maximum sorption of fatty acid by all fibers was obtained with sodium myristate, while the alkali sorptions were approximately the same for myristate, palmitate, and stearate, all of which were higher than for laurate. The sorption from sodium oleate solutions corresponded approximately to that from the C14–C16saturated soaps. Preferential sorption of alkali by cotton and viscose rayon was observed for all soaps, while acetate rayon, nylon, and wool showed preferential sorption of fatty acid with the lower molecular weight soaps and preferential sorption of alkali with the higher soaps. Suppression of hydrolysis by the addition of excess free alkali resulted in a reduction in fatty acid sorption in every case, and shifted the maximum from the C14to the C16soap. It is concluded that the sorption of soap by textile fibers is a complex process involving the more or less independent sorption of neutral soap, hydrolytic fatty acid (or acid soap), and hydrolytic alkali.
ISSN:1923-4287
DOI:10.1139/cjr50f-004
出版商:NRC Research Press
年代:1950
数据来源: NRC
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2. |
A SMALL FLUIDIZED SOLIDS PILOT PLANT FOR THE DIRECT DISTILLATION OF OIL FROM ALBERTA BITUMINOUS SANDS |
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Canadian Journal of Research,
Volume 28f,
Issue 3,
1950,
Page 62-70
W. S. Peterson,
P. E. Gishler,
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摘要:
A new method of recovering oil from Alberta bituminous sand is described, in which the bituminous sand is fed directly into a hot fluidized sand bed. A clean dry distillation product is obtained amounting to 80% by volume of the bitumen in the feed. A description is given of the pilot plant.
ISSN:1923-4287
DOI:10.1139/cjr50f-005
出版商:NRC Research Press
年代:1950
数据来源: NRC
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3. |
VARIATIONS IN PROTEIN CONTENTS OF PLANTS, HEADS, SPIKELETS, AND INDIVIDUAL KERNELS, OF WHEAT |
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Canadian Journal of Research,
Volume 28f,
Issue 3,
1950,
Page 71-81
I. Levi,
J. A. Anderson,
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PDF (552KB)
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摘要:
Protein contents of individual kernels of wheat, representing random samples taken from two plots of 0.1 acre and two plots of 0.23 acre, were found to be distributed within samples in an approximately normal manner over a range of at least 6 percentage units with a standard deviation of 1.4 units.Protein contents of grain of 68 Thatcher plants, comprising a 10 ft., 1-row plot, had a range of 2.7% and a standard deviation of 0.6%. Within plants, the average range for single heads was 1.7%; the maximum range was 4.9%. Heads with high protein contents tended to occur on the shorter tillers of plants containing more than three tillers.Determinations were made on each of the kernels in three plants. Mean values for individual spikelets were normally distributed over a range of 5.1%; two extreme values, representing spikelets containing only one kernel, increased the range to 9.6%; the standard deviation for spikelets within heads was about 1.1%. Protein contents of spikelets tended to decrease towards the top from about the top third of the head; the top two spikelets of each head generally had decidedly lower protein contents than the remaining spikelets.Within spikelets containing three kernels, the top kernel tended to be decidedly lower in protein content (mean, 14.7%) than the remaining two; the middle kernel (15.9%) tended to be slightly higher than the lowest one (15.7%). In spikelets containing only two kernels, the top one tended to be about 0.3% lower in protein content. Within plants, the protein contents of individual kernels were normally distributed over a range of about 6% with a standard deviation of 1.2%.
ISSN:1923-4287
DOI:10.1139/cjr50f-006
出版商:NRC Research Press
年代:1950
数据来源: NRC
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