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71.
72.
R. Julian Hafner 《Applied psychophysiology and biofeedback》1982,7(3):305-316
Twenty-one patients with essential hypertension were randomly allocated to eight 1-hour sessions of meditation training, meditation plus biofeedback-aided relaxation, or a no-treatment control group. Statistically significant falls in systolic and diastolic blood pressure occurred after both training programs, although overall reductions in blood pressure were not significantly greater in either program than in the control group. Meditation plus biofeedback-aided relaxation produced falls in diastolic blood pressure earlier in the training program than did meditation alone. All patients practiced meditation regularly between training sessions: The amount of practice did not correlate with the amount of blood pressure reduction after training. On questionnaire measures of psychological symptoms and personality, sex differences emerged, with females showing significant abnormalities in hostility scores and males showing significantly raised levels of somatopsychic symptoms. In females, outward-directed hostility fell significantly and assertiveness increased after training, but in males, somatopsychic symptoms were unchanged.The author is grateful for financial support from the research fund of St. George's Hospital, London, where this project was conducted, and from the Society for Psychosomatic Research. He is indebted to Dr. Chandra H. Patel for invaluable help in conducting the meditation and biofeedback training. 相似文献
73.
74.
The paper describes the logic of a computer method for identifying unbranched enzyme kinetic mechanisms on the basis of observed initial velocity and product inhibition patterns (Cleland, 1963). The method establishes initially an acceptable order of reactant addition and release, proceeds to list all the mechanisms consistent with that order and the data, and finally determines which of these can also explain data which require either non-competitive or dead-end inhibition. 相似文献
75.
Jeanette J. Chen Erla R. Smith Gary D. Gray Julian M. Davidson 《Primates; journal of primatology》1981,22(2):253-260
Seasonal changes in body weight, plasma testosterone and ejaculatory capacity were observed in five intact and two testosterone-implanted
castrated squirrel monkeys for a total of 13 months. Electroejaculation was employed for obtaining data concerning ejaculation.
In the intact animals, there were significant increases in body weight, ejaculate volume and plasma testosterone during the
breeding season. With the exception of one animal, there was also a decrease in ejaculation latency during the season. Seasonal
differences in the sperm count and sperm motility were not observed. Testosterone-implanted castrates showed changes in both
ejaculate volume and ejaculation latency similar to those seen in intact monkeys during the breeding season. The body weight
and plasma testosterone of the castrates remained quite constant throughout the year.
Supported by NIH grants HD 00778, MH 21178 and MH 23645. 相似文献
76.
Arlette Acoutte-Panvier Julian E. Davies Linda R. Gritz Barbara S. Littlewood 《Molecular & general genetics : MGG》1980,179(2):273-282
Summary The cytoplasmic ribosomal proteins (r-proteins) of seventeen yeast species of the genera Saccharomyces and Kluyveromyces were analyzed by one-dimensional gradient polyacrylamide gel electrophoresis in the presence of sodium dodecyl sulphate. The electrophoretic patterns of cytoplasmic r-proteins from different species display extensive differences in both the 40S and the 60S subunit. Relatedness of species suggested by r-protein patterns correlates well with that based on DNA/DNA homology (Bicknell and Douglas 1970). Immunochemical cross-reactions and antibiotic susceptibility tests were also used to compare different species.Analyses of r-proteins from two different interspecific hybrids showed that their ribosomes were hybrid, containing r-proteins from both parents. These findings are discussed in relation to the evolution of yeast species and the regulation of expression of r-proteins in cucaryotes. 相似文献
77.
78.
Eugenia mcvaughii is described from a forest remnant of the Jardin Botánico of Caracas, Venezuela. Found also in the hills adjacent to Caracas, it may be considered as an endemic species of the Interior Coastal Cordillera. 相似文献
79.
Julian A. Steyermark 《Brittonia》1980,32(1):17-23
Three new species,Lubaria szczerbanii (Rutaceae),Croton guaiquinimae (Euphorbiaceae), andStomatochaeta colveei (Asteraceae), are described from the summit of Cerro Guaiquinima, Venezuela. The generic affinities betweenLubaria andMyllanthus, and betweenStomatochaeta andStenopadus are discussed. 相似文献
80.
Summary In freeze-fractured specimens of taste buds from the foliate papillae of rabbits, the intercellular spaces are separated from the pore of the taste bud by zonulae occludentes of the tight-type. Below these tight junctions numerous desmosomes are found at irregular intervals. The epithelial cells adjacent to the pore are also joined by single strands of fusion. The microvilli arising from the neck of the type I cells have a high particle density. The microvilli of type II cells and especially the short microvilli of peripherally situated cells have a lower intramembranous particle density. The single microvillus of type III cells has a very large diameter and is longer than the other microvilli. It contains a few larger intramembranous particles and vesicle-like protrusions of the membrane facing the cytoplasm. Transverse fracturing reveals a filamentous fine structure in all microvilli. The physiological implications of these observations are discussed.Supported by grants from the Deutsche Forschungsgemeinschaft (Ja 205/5+6) 相似文献