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961.
W J Koopman M H Gillis J R David 《Journal of immunology (Baltimore, Md. : 1950)》1973,110(6):1609-1614
962.
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964.
Comparison of the three basic scattering functions of myoglobin in solution with those from the known structure in crystalline state 总被引:2,自引:0,他引:2
H B Stuhrmann 《Journal of molecular biology》1973,77(3):363-369
X-ray small-angle scattering of myoglobin in aqueous solutions enhances the probability that the structure of myoglobin is conserved on passing to the dissolved state. The agreement of measured and calculated results could be extended up to which roughly corresponds to 5 Å resolution. 相似文献
965.
H. Uehleke 《Mutation research》1974,25(2):159-167
An overview on aspects of kinetics and properties of reactive drug metabolites in relation to mutagenesis. 相似文献
966.
This study was conducted to determine if amplitudes of rat corticol steady potential (SP) response to an auditory stimulus could be altered by operant conditioning procedures using food reinforcement. The negative SP responses to the 5-sec tone alone diminished with repeated presentation of the stimulus. When food reinforcement was given immediately following the tone, SP response amplitudes increased and stabilized after 4–5 sessions. Thereafter, the animals were required to increase or decrease the amplitudes of response in order to obtain reinforcement. Two of three rats required to increase amplitudes were successful and three of four rats required to decrease amplitudes were successful. It is concluded that changes in cortical SP responses can be operantly conditioned. 相似文献
967.
968.
969.
Hydrobiologia - The taxonomic composition and biomass of phytoplankton in the San Joaquin River, California, were examined in relation to water depth, flow regime, and water chemistry. Without... 相似文献
970.
A. V. Timofeev 《Plasma Physics Reports》2003,29(8):683-687
The conditions under which the energy of the electron Langmuir oscillations can escape from the plasma into vacuum are determined in the simplest model of a plane slab of an inhomogeneous cold magnetized plasma in a uniform magnetic field. 相似文献