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1.
M. J. Danzig J. L. O'Donnell E. W. Bell J. C. Cowan H. M. Teeter 《Journal of the American Oil Chemists' Society》1957,34(3):136-138
Summary Soybean fatty acids were conjugated with alkali, and the contained, conjugated dienoic acids were isomerized with iodine to
thetrans,trans configuration. Adducts were prepared from thesetrans,trans-conjugated acids by condensation with maleic anhydride and acrylic acid. The adducts were isolated, purified, and converted
to esters by using a variety of alcohols, including methyl, ethyl,n-propyl,n-butyl, and allyl alcohols. Esters made from saturated alcohols were converted into the corresponding epoxy derivatives.
All of the esters (except allyl) and all of the epoxy esters were compatible with an equal weight of polyvinyl chloride and
appeared to be primary plasticizers for this plastic. The epoxy esters were effective in inhibiting heat deterioration of
polyvinyl chloride.
Presented at fall meeting. American Oil Chemists' Society, September 23–26, 1956, Chicago, Ill. 相似文献
2.
W. R. Miller E. W. Bell J. C. Cowan H. M. Teeter 《Journal of the American Oil Chemists' Society》1961,38(5):235-237
The reaction of dimethyl maleate and some related dienophiles with vegetable oils under pressure has been studied successfully.
When safflower oil reacts with 100% excess maleate, sulfur dioxide catalyst, and hydroquinone inhibitor at 290° for 1hr.,
80 to 90% yields of adduct fraction, based on linoleate, are obtained. Under the same conditions almost equally good yields
result with either linseed or soybean oils. With safflower oil, dimethyl fumarate gave slightly lower yields. Di-n-butyl maleate gave even poorer yields, and much residue was formed.
Paper II in a series entitled, “Reactions of Dienophiles with Vegetable Oils”. Presented at annual meeting, American Oil Chemists'
Society, St. Louis, Mo., May 1–3, 1961.
This is a laboratory of the Northern Utilization Research and Development Division, Agricultural Research Service, U.S. Department
of Agriculture. 相似文献
3.
H. M. Teeter L. C. Dorman L. Harris 《Journal of the American Oil Chemists' Society》1960,37(11):552-555
The molecular-weight distributions of several conjugated soybean vinyl ether homopolymers were studied by means of the integral
fractionation technique. Polymers having number average molecular weights of 2,200, 4,800 and 10,000 prepared with stannic
chloride as catalyst as well as a polymer having a molecular weight of 3,400 prepared with boron trifluoride as catalyst were
included in the study. The observed distributions for all the polymers were found to approximate the socalled “most probable”
distributions expected theoretically for polymers obtained by simple difunctional polymerization.
Presented at annual meeting. American Oil Chemists' Society, New Orleans, La., April 20–22, 1959.
This is a laboratory of the Northern Utilization Research and Development Division, Agricultural Research Service, U. S. Department
of Agriculture. 相似文献
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This investigation examined whether cognition serves as a direct factor, mediates, or moderates the relationship between stressful life events and Children's Depression Inventory (CDI; Kovacs, 1992) factor scores in urban, ethnic minority youth. Ninety-eight middle school students completed measures of stressful life events, cognition (cognitive triad and locus of control), and depressive symptoms. Results provided support for both mediating and moderating models of depression. Specifically, the cognitive triad mediated the relationship between stressful life events and depressive symptom categories of negative mood, ineffectiveness, and anhedonia, while it interacted with stressful life events to predict negative self-esteem. In addition, locus of control was found to interact with stressful life events to predict anhedonia. Finally, the diathesis-stress model was not supported when predicting the CDI Interpersonal Problems factor score, which taps externalizing behaviors. Implications for school psychology research and practice include the importance of including measures of stressful life events and cognitive styles in assessment of children's social-emotional functioning. In addition, results highlight the need to target children's perceptions for intervention since they appear to play a significant role in psychological reactions to stressors. (PsycINFO Database Record (c) 2011 APA, all rights reserved) 相似文献
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Howard M. Teeter Charles R. Scholfield John C. Cowan 《Journal of the American Oil Chemists' Society》1946,23(7):216-219
Summary 1. Addition products of ethyl crotonate and crotononitrile with conjugated methyl linoleate, derived from soybean methyl esters
conjugated with a nickelcarbon catalyst, were prepared.
2. The addition product of ethyl crotonate and nonconjugated methyl linoleate was prepared and compared with that from conjugated
methyl linoleate.
3. The addition product of ethyl crotonate and conjugated methyl linoleate was saponified to a dibasic acid which was used
to prepare a decamethylene glycol polyester and an ethylene diamine polyamide.
4. The compatibility of the addition product of ethyl crotonate and conjugated methyl linoleate with various synthetic resins
was determined.
One of the laboratories of the Bureau of Agricultural and Industrial Ohemistry, Agricultural Research Administration, U. S.
Department of Agriculture. 相似文献
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Material studies and device applications of CuxTe in an NREL-developed CdTe solar cell structured as glass/Cd2SnO4/ZnSnOx/CdS/CdTe are presented. The CuxTe primary back contact was formed by evaporating a Cu layer with various thicknesses at room temperature on HNO3/H3PO4 (NP) solution etched CdTe layer. A post-annealing was then followed. The structural evolution and electrical properties of CuxTe were investigated. Cu/Te ratio and post-annealing temperature are two processing parameters in this study. The CuxTe phases are mainly controlled by the Cu/Te ratio. After a post-annealing at a low temperature, such as 100 °C, no CuxTe phase transformation from its as-deposited phase was observed. A post-annealing treatment at a higher temperature, such as 250 °C, can reveal the stoichiometric CuxTe phases based on the Cu/Te ratio used in the devices. But a post-annealing at a further higher temperature, such as 400 °C, resulted in a complicated CuxTe phase appearance. CuTe, Cu1.4Te, and Cu2Te are three major phases detected by X-ray diffraction (XRD) for different Cu thickness application annealed at 250 °C. Application of Cu thicker than 60 nm degrades open-circuit voltage (Voc) and shunting resistance (Rsh), but increases series resistance (Rs). The correlation between device performance and the CuxTe back contact illustrates that the process used for forming the Cu2Te back contact failed to produce good fill factor (FF) and also introduced higher barrier height. The best device was observed for a back contact with a mixed Cu1.4Te and CuTe phases. 相似文献