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  • 1
    Electronic Resource
    Electronic Resource
    Zero-point photon-electron field-field interaction as the origin of the high-temperature superconductivity of oxide (abstract) (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 5082-5082 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The new frames in physics has united the physics of materials and a new terminology of supercorresponding c- and q-number systems is introduced for the classical and quantal physics. In the q-number system, the electron field as represented by the Schrödinger or Dirac wave function is regarded as the electron itself, which interacts with the zero-point photon field and gives the mass renormalization. The new frames can analyze this subject without the divergence difficulty. The resultant decrease in the self-energy of the electron of about 1 eV is proposed to be dependent on the environmental crystal situation, and may become cooperative to generate coherence to the conduction electron-photon coupled system. Our basic c-number equation includes the vector potential of the interacting photon field, the microscopic electronic electric current, the frequency of the considered photon field, the original plasma frequency of the conduction electrons, and an equivalent frequency and the resonance frequency of the bound-state electrons. Placing reasonable values for these constants, we get a detailed k-ω diagram for the photon-electron field complex. By the action of the bound-state electrons, the original plasma frequency of about 4 eV is separated into two, with the lower value of about 1.7 eV (2.6×1015 s−1). This branch crosses the free-photon mode near the same frequency, opening a sharp narrow window for the zero-point free-photon field. The Fermi frequency of the conduction electrons is about the same with the wavelength of about 10 A(ring), which may fit one of the crystal dimensions. The zero-point photon-electron field complex at this frequency may couple to the electron field at the Fermi level through the induced zero-point ripple electron field. The Heisenberg uncertainty, ΔEΔt≥(h-dash-bar), may operate to the window for generating the longer time-space coherence. We call this mechanism CRCG (crystallo-radiative coherence generator).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.344677
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  • 2
    Electronic Resource
    Electronic Resource
    The Min DNA inversion enzyme of plasmid p15B of Escherichia coli 15T−: a new member of the Din family of site-specific recombinases (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Molecular microbiology 4 (1990), S. 0 
    Details
    ISSN: 1365-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Plasmid p15B is a bacteriophage P1-related resident of Escherichia coli 15T−. Both genomes contain a segment in which DNA inversion occurs, although this part of their genomes is not identical. This DNA segment of p15B was cloned in a multicopy vector plasmid. Like its parent, the resulting plasmid, pAW800, undergoes complex multiple DNA inversions: this DNA inversion system is therefore called Min. The min gene, which codes for the p15B Min DNA invertase, can complement the P1 cin recombinase gene. The Min inversion system is thus a new member of the Din family of site-specific recombinases to which Cin belongs. The DNA sequence of the min gene revealed that Min is most closely related to the Pin recombinase of the e14 defective viral element on the E. coli K12 chromosome. Like other members of the Din family, the min gene contains a recombinational enhancer element which stimulates site-specific DNA inversion 300-fold.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2958.1990.tb00671.x
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  • 3
    Electronic Resource
    Electronic Resource
    Mutants having a low content of 16-kDa allergenic protein in rice (Oryza sativa L.) (1993)
    Springer
    Theoretical and applied genetics 86 (1993), S. 317-321 
    Details
    ISSN: 1432-2242
    Keywords: Rice ; Mutation breeding ; Allergenic protein ; 16-kDa polypeptide ; Floury
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Rice mutants containing low levels of the 16-kDa allergenic protein, which is the main allergen in the rice grain for patients of atopic dermatitis due to the intake of rice, were screened, and 4 independent mutant lines with small amounts of this protein were found by SDS gel electrophoresis and immunoblot analysis. These mutants were grouped into two types. Two mutant lines, 85KG-4 and 86RG-18, contained low levels of the 16k-Da and 26-kDa polypeptides and a high level of the 57-kDa polypeptide. The 16-kDa polypeptide content of these mutants was about half that of the original cultivars. Homozygous lines were developed, and these showed normal growth and seed set. The other 2 mutant lines, 87KG-970 and 89WPKE-149, showed traces of the 16-kDa and 26 kDa polypeptides and contained a high level of the 13 kDa polypeptide. The homozygous plants of this type were sterile. All of the mutant lines had floury endosperms. Genetic analysis suggested that low 16-kDa polypeptide content is controlled by a single recessive gene. Attempts to separate of the genes for low 16-kDa polypeptide content and floury endosperm by crossing with the original cultivar were unsuccessful, suggesting the tight linkage of these two genes or pleiotropism of a single mutated gene. The relationship between low 16-kDa polypeptide content and the floury character and the possible use of the mutant as a low allergen rice are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00222095
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  • 4
    Electronic Resource
    Electronic Resource
    A rice (Oryza sativa L.) mutant having a low content of glutelin and a high content of prolamine (1993)
    Springer
    Theoretical and applied genetics 87 (1993), S. 374-378 
    Details
    ISSN: 1432-2242
    Keywords: Mutation breeding ; Seed protein ; Glutelin ; Prolamine ; Rice ; Oryza sativa
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Among the mutant lines of rice that have been selected for morphological characters, one line, NM67, was found to have a low content of glutelin and a higher content of prolamine in its seed protein than other Japanese cultivars. This mutant is a semi-dwarf and partially sterile line, and its leaves turn yellow before heading. Genetic analysis after backcross to the original cultivar, ‘Nihonmasari’, revealed the following: (1) the character of low glutelin content was always accompanied by the character of high prolamine content; (2) the low glutelin (and high prolamine) character seemed to be manifested by a single dominant gene; and (3) semi-dwarfness, low fertility and early yellowing leaf of the mutant, which might also be pleiotropy, were controlled by a single recessive gene independent of the gene for protein content. The protein character of NM67 was genetically separated from semi-dwarfness and low fertility, and a new line having low glutelin content and high prolamine content with normal morphological characters comparable to those of the original cultivar was obtained from the progenies of the cross. The possible use of this line as a low protein rice cultivar is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01184926
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  • 5
    Electronic Resource
    Electronic Resource
    Community dynamics of Ogawa Forest Reserve, a species rich deciduous forest, central Japan (1992)
    Springer
    Plant ecology 103 (1992), S. 105-112 
    Details
    ISSN: 1573-5052
    Keywords: Canopy gap ; Community dynamics ; Deciduous forest ; Disturbance ; Ogawa Forest Reserve ; Permanent plot
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Forest community dynamics were studied for 4 years in a 6 ha permanent plot of species rich, old-growth, temperate deciduous forest in Ogawa Forest Reserve, central Japan. The gap formation rate, recruitment, mortality, gain and loss rate in basal area during 4 years were 42 m2 ha−1 yr−1, 1.74% yr−1, 1.19% yr−1, 1.12% yr−1 and 0.88% yr−1, respectively. The turnover time calculated from them ranged from 58 to 240 years. Both the mortality and mortality factors were size dependent; trees in middle size class had smallest mortality, and the proportion of the trees killed by disturbances increased with size. Gap creations were concentrated in a particular year, suggesting a large heterogeneity in time. Spatial distribution of recruited trees were biassed to the old gaps (older than 4 years), especially that of the species with Bell-shaped dbh distribution (shade intolerant) strongly associated with the gaps. Recruitment in tree stems and the loss of basal area, thus had the larger variability than mortality of stems and this forest, and the species with L-shaped dbh distribution seemed to going to increase the importance in the future if the present trend continues to be held. The turnover time of population is positively correlated with the maximum dbh size of the species, indicating the slow change of the population of large sized species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00047696
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  • 6
    Electronic Resource
    Electronic Resource
    Community structure of a species-rich temperate forest, Ogawa Forest Reserve, central Japan (1992)
    Springer
    Plant ecology 98 (1992), S. 97-111 
    Details
    ISSN: 1573-5052
    Keywords: Guild structure ; Historical events ; Non-equilibrium coexistence ; Regeneration niche ; Markov model
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Species assembly and niche differentiation were studied, and future species composition was predicted by simple Markov models, in an old-growth deciduous forest at the Ogawa Forest Reserve in central Japan. The dominant species in our 6ha study site are Quercus serrata, Fagus japonica, and F. crenata. An ordination by population parameters revealed four different combination 3 of life forms and regeneration niches. Cluster analysis based on interspecific spatial correlation revealed three groups of species. The species in cluster A, such as F. japonica, occurred at the bottom of the valley, while those in cluster B, such as Q. serrata, occurred along ridges. Species in cluster C, such as F. crenata, did not show any particular habitat preference. Clusters B and C were further divided into three smaller clusters (a-c). Both clusters Ba and Bb included shade intolerant species. Species in cluster Ba had large clump sizes (〉1500 m2), reflecting regeneration following large-scale disturbances. Species in cluster Bb had smaller clump sizes (〈400 m2) reflecting regeneration following local disturbances. Clusters Ca and Cb mainly included shade tolerant species and shade intolerant species, respectively. Markov models predicted that shade intolerant species, particularly those in cluster Ba, would be eliminated. Thus, species coexist by differentiation of both habitats and regeneration niche in this forest community. Some species such as Quercus serrata, however, regenerate following large-scale disturbances or human activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00045549
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  • 7
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    Site-specific DNA recombination system Min of plasmid p15B: a cluster of overlapping invertible DNA segments. (1990)
    National Academy of Sciences
    Details
    Publication Date: 1990-02-01
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 8
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    Wave propagation through disordered media and universal conductance fluctuations (1990)
    American Physical Society
    Details
    Publication Date: 1990-01-29
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society
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  • 9
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    Statistics of conductance fluctuations in quantum dots (1993)
    American Physical Society
    Details
    Publication Date: 1993-08-23
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society
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  • 10
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    Comparison of biological activities of human antithrombins with high-mannose or complex-type nonfucosylated N-linked oligosaccharides (2016)
    Oxford University Press
    Details
    Publication Date: 2016-03-31
    Description: The structure of the N-linked oligosaccharides attached to antithrombin (AT) has been shown to affect its anticoagulant activity and pharmacokinetics. Human AT has biantennary complex-type oligosaccharides with the unique feature of lacking a core fucose, which affects its biological activities by changing its heparin-binding affinity. In human plasma, AT circulates as a mixture of the α-form bearing four oligosaccharides and the β-form lacking an oligosaccharide at Asn135. However, it remains unclear how the immature high-mannose-type oligosaccharides produced by mammalian cells affect biological activities of AT. Here, we succeeded in directly comparing the activities between the high-mannose and complex types. Interestingly, although there were no substantial differences in thrombin inhibitory activity, the high-mannose type showed higher heparin-binding affinity. The anticoagulant activities were increased by heparin and correlated with the heparin-binding affinity, resulting in the strongest anticoagulant activity being displayed in the β-form with the high-mannose type. In pharmacokinetic profiling, the high-mannose type showed a much shorter plasma half-life than the complex type. The β-form was found to have a prolonged plasma half-life compared with the α-form for the high-mannose type; conversely, the α-form showed a longer half-life than the β-form for the complex-type. The present study highlights that AT physiological activities are strictly controlled not only by a core fucose at the reducing end but also by the high-mannose-type structures at the nonreducing end. The β-form with the immature high-mannose type appears to function as a more potent anticoagulant than the AT typically found in human plasma, once it emerges in the blood.
    Print ISSN: 0959-6658
    Electronic ISSN: 1460-2423
    Topics: Biology , Medicine
    Published by Oxford University Press
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