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11.
Modifications of similar type were noted in the number of multiple AMY-1 forms of amylase isozyme for various species of Artiodactyla. It is supposed that these modifications are linked to periodical activation during evolution of genes responsible for modification of the molecules. Data obtained on Bovinae hybrids testify to this point of view. Inactivation of active and reinactivation of "silent" genes responsible for modification of AMY-1 molecules are observed in hybrids of bison x cow and bison x aurochs combinations. 相似文献
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Rozhkov RV 《T?Sitologii?a i genetika》2006,40(1):21-26
Inheritance of glume length and grain length in the hybrids Triticum polonicum with T. durum cv. Kharkivs'ka 19 has been studied. The results show that the "polonicumity" complex inherits as unfully recessive and monogene trait. Positive correlation between glume length and grain length has been shown. It has been revealed that more exact plant distribution to segregation classes is observed for the glume at the second floret than at the first one. 相似文献
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Rozhkov SP Goryunov AS Sukhanova GA Borisova AG Rozhkova NN Andrievsky GV 《Biochemical and biophysical research communications》2003,303(2):562-566
Physicochemical effects of hydrated C(60) fullerenes (HyFn) on serum albumin molecules were studied using ESR spin labeling and differential scanning microcalorimetry. Molecular-colloidal solution of hydrated C(60) fullerenes and their small spherical fractal clusters in water (C(60)FWS), was shown to stabilize protein hydration, and decrease specific surface energy in water-protein matrix in salt solutions. The mechanism of HyFn interaction with protein is discussed in terms of HyFn induced formation of protein clusters and phase transition of hydration water. 相似文献
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Rozhkov SP 《Biofizika》2005,50(2):215-222
Equations of spinodal and two quasispinodals corresponding to critical and supercritical phase transitions leading to a rise of different dynamic structures of solution in the phase diagram of a model system water-biopolymer-electrolyte were obtained. The section of the phase diagram was considered where there exists the probability of quasi-equilibrium monomer-cluster and the principle of water-ion homeostasis is realized. Based on these results, a possible mechanism of origination of unspecific adaptation reactions of a biomolecular system at the stage of chemical evolution was suggested. 相似文献
16.
Using the analysis of the interaction between EEG components [1], the authors studied the regularities of the formation of the EEG wave structure in 36 children aged 4 to 7 months, 2 to 3 years, and 4 to 5 years. The EEG of 4- to 7-month-old children had a relatively organized temporal structure, whose components were connected mainly with those of the slow-wave range. This structure is reproduced in most of the leads and is more stable in the anterior cortical areas than in the posterior ones. The waking 2- to 5-year-old children had two functional nuclei in the relation structure of the EEG components characterized by statistically significant enhancement in the probability of the consecutive appearance of waves of certain ranges. These nuclei include a slow-wave nucleus in the range of the 2–1-frequencies and an alpha-nucleus in the 1- and 2-ranges (2 and 1 2- to 3-year-old children) of the EEG frequencies. The relations between the components of the slow-wave nucleus begin to form in infants, prevail in 2- to 3-year-old children, and weaken by the age of 4 to 5 years. A trend is observed in 2- to 5-year-old children towards an increase in the average frequency of the waves that form the slow-wave nucleus. The temporal (strengthening interaction between the waves) and spatial organization of the interaction between the wave components of the alpha-nucleus is accelerated at the age of 4 to 5 years. The average frequency of the components forming this nucleus gradually increases with the children's age from 4 to 7 months to 4 to 5 years. Competitive relations exist between the two nuclei, characterized by a significant decrease in the probability of transitions between the components of different nuclei. The 2-component may play a special role of the connecting link between the nuclei at the age of 4 to 5 years, the interwave transition from the - to -frequencies and from the latter to the -range being effected by a leaplike rather than smooth frequency increase. The character of local and spatial rearrangements of the EEG temporal structure detected in this study reflects a gradual morphofunctional maturation of the brain as a system that maintains the specific features of self-regulation mechanisms and coordination of the intersystem interactions at various stages of a child's development. 相似文献
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Korolev AM Yudina LN Rozhkov II Lysenkova LN Lazhko EI Luzikov YN Preobrazhenskaya MN 《Carbohydrate research》2001,330(4):713-477
A facile preparation is described of 3-(indol-3-yl)-2-hydroxy-4-hydroxymethylcyclopent-2-enone and its N-derivatives in 15-40% yields by the degradation of ascorbigen or its N-derivatives in a warm solution of L-ascorbic acid through a sequential domino reaction. The same cyclopentenone derivatives were obtained in 30-40% yields by the condensation of (N-alkylindol-3-yl)glycolic acids with ascorbic acid. 2,6-Dihydroxy-1-(indol-3-yl)hexa-1,4-diene-3-one and 2-hydroxy-4-hydroxymethyl-5-(indol-3-yl)cyclopent-2-enone were identified as intermediates in this reaction. 相似文献
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Phase states of a quasi three-component water-protein(polypeptide)-salt system most capable of self-regulation in response to the medium temperature and/or salinity changes have been determined on the basis of experimental and theoretical data concerning phase diagrams and thermodynamic behavior of the system. 相似文献
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