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  • 1
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    Optical detection in GaSe (1988)
    Institute of Physics
    Details
    Publication Date: 1988-04-30
    Print ISSN: 0049-1748
    Topics: Physics
    Published by Institute of Physics
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    PAPER CURRENT
  • 2
    Electronic Resource
    Electronic Resource
    Contribution of higher gluon condensates to light-quark vacuum polarization (1987)
    Springer
    The European physical journal 33 (1987), S. 419-425 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A method of classifying quark operators in QCD sum rules is suggested. The expansion coefficients of all thed≦8 bilinear quark condensates in gluon condensates are calculated. The coefficient functions at the gluon operators withd≦8 in the polarization operator ∏(q 2) of the light-quark vector current are obtained. A comparison is performed with the calculations in the covariantly constant fields and self-dual fields. The results obtained can be used in the sum rules for the ρ, ω and ϕ families.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01552548
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  • 3
    Electronic Resource
    Electronic Resource
    Simple construction ofSU(3) representations using theSU(2) projection technique (1985)
    Springer
    Czechoslovak journal of physics 35 (1985), S. 593-601 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract SU(3) representations for theSU(3) ⊃SU(2) chain are constructed in a new way usingSU(2) projection operators. TheSU(3) D-functions, presented in new parametrizations, are expressed in terms ofSU(2) D-functions and 6j-symbols.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01595530
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  • 4
    Electronic Resource
    Electronic Resource
    Noise performance of a white-light optical signal processor (1985)
    Springer
    Applied physics 36 (1985), S. 11-15 
    Details
    ISSN: 1432-0649
    Keywords: 42.30 ; 42.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A study of the effects of spatially and partially coherent illumination on the noise performance of an optical processor is presented here. Noise arising from defects in the object plane and the Fourier plane are considered separately. Two important types of noise are analyzed in detail: (a) amplitude noise and (b) ramdom phase noise. The results illustrate that the effects of the object phase noise can be reduced when the requirements on spatial coherence are relaxed. Also, the noise at the Fourier plane can be effectively eliminated when a spatially incoherent light source is employed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00698030
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  • 5
    Electronic Resource
    Electronic Resource
    Synaptonemal complexes and chromosome chains in the rodent Ellobius talpinus heterozygous for ten Robertsonian translocations (1986)
    Springer
    Chromosoma 94 (1986), S. 94-102 
    Details
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Synaptonemal complexes (SC) in four Ellobius talpinus males heterozygous for ten Robertsonian translocations were examined with an electron microscope using a surface-spreading technique. A total of 136 late zygotene and pachytene spermatocytes were examined. From one to three completely paired SC trivalents were found in each early pachytene spermatocyte. The lateral elements of the short arms of the acrocentric chromosomes in these trivalents were joined with an SC thus forming the third arm of the SC trivalent. At the same stage a few SC trivalents did not contain lateral elements in the pericentromeric region of the metacentric chromosomes and remained unpaired in this region up to mid pachytene. At zygotene and pachytene from two to eight SC trivalents were joined into chains due to formation of SCs between the short arms of acrocentrics of other SC trivalents. These chains are frequent at late zygotene, but are resolved during pachytene into individual trivalents. It is proposed that pairing and SC formation between the short arms of the acrocentric chromosomes results from the monosomy of the short arms and partial DNA homology between these heterochromatic regions. Since crossing over probably does not take place in these segments, the chromosomal chains may subsequently be corrected into trivalents by a dissolution of the SCs combining adjacent trivalents. The correction and disjoining of chains may not be effective in all cells. The cells in which the chains are retained are assumed to be arrested at the pachytene stage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00286986
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  • 6
    Electronic Resource
    Electronic Resource
    The mobility of chromatophore membranes from Ectothiorhodospira Shaposhnikovii revealed by Rayleigh scattering of Mössbauer radiation (RSMR) experiments (1985)
    Springer
    European biophysics journal 12 (1985), S. 107-114 
    Details
    ISSN: 1432-1017
    Keywords: Chromatophores ; Ectothiorhodospira Shaposhnikovii ; RSMR
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Abstract Chromatophores from Ectothiorhodospira Shaposhnikovii in solvents of different viscosity were investigated by RSMR experiments in the temperature range between 112 K and room temperature. Additional RSMR-experiments were done on solvents only. The mobility of the molecules and within the molecules is the given by the Debye-Waller factor which yields the meansquare displacement, $$\overline {\left\langle {x^2 } \right\rangle }$$ , averaged over the atoms in the system. The mobility of the atoms of the chromatophores roughly follows the mobility of the atoms of the solvents. At low temperatures the mobility of the chromatophores remains slightly larger than the mobility of the frozen solvent. At room temperature, however, $$\overline {\left\langle {x^2 } \right\rangle }$$ of the chromatophores remains significantly smaller. Chromatophores in a glycerol-water mixture (0.001 M Tris-HCl buffer) and in water (0.05 M Tris-HCl buffer) show a different dynamic behaviour. A region with enhanced mobility near T=180 K was indicated for the chromatophores in the glycerolwater mixture. A correlation has been suggested between the rate of electron transfer from the primary to the secondary quinone and the increase of the conformational mobility of the chromatophores in glycerol-water mixture.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00260433
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  • 7
    Electronic Resource
    Electronic Resource
    A mathematical model for border irrigation II. Vertical and horizontal recession phases (1987)
    Springer
    Irrigation science 8 (1987), S. 175-190 
    Details
    ISSN: 1432-1319
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary This paper, second in a series of three, develops a mathematical model, using the volume balance approach, to simulate vertical and horizontal recession of border irrigation. An equation is proposed for computing Manning's roughness factor N in both laminar and transitional flow regimes in recession phases. The model has four parameters which can be determined experimentally. Experimental data from ten vegetated as well as nonvegetated borders were used to verify the model. Average difference (AD) between calculated and observed vertical recession times was less than 4.4 min, and between calculated and observed horizontal recession times less than 4.6 min for the ten experimental data sets. Average relative error (ARE) in computed horizontal recession was less than 13% for these data sets. The model was found to be especially accurate for Reynold's number between 1,800 and 2,500.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00259380
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  • 8
    Electronic Resource
    Electronic Resource
    A mathematical model for border irrigation I. Advance and storage phases (1987)
    Springer
    Irrigation science 8 (1987), S. 151-174 
    Details
    ISSN: 1432-1319
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary This paper, the first in a series of three, develops a simple mathematical model for advance and storage phases of border irrigation. The model has 5 parameters which can be determined from experimental or field observations. Experimental data from 10 vegetated and nonvegetated borders were used to calibrate the model and from 15 vegetated and nonvegetated borders to verify the model. Average relative error in computed advance was less than 6% in calibration and was less than 8% in prediction. The model was particularly accurate if Reynold's number was less than 2,500.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00259379
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  • 9
    Electronic Resource
    Electronic Resource
    A mathematical model for border irrigation III. Evaluation of Models (1987)
    Springer
    Irrigation science 8 (1987), S. 191-213 
    Details
    ISSN: 1432-1319
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary This paper, the concluding one of a series of three, evaluates 9 border irrigation models (3 for advance, 3 for vertical recession and 3 for horizontal recession) which have closed-form solutions. Experimental data from 10 vegetated and nonvegetated borders are used to compare these models with the proposed (Singh-Yu or SY) model derived in Parts I and II. The proposed model is found to be superior in terms of accuracy, ease of application, and physical basis of parameters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00259381
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  • 10
    Electronic Resource
    Electronic Resource
    An equipment complex for instrumental elementary analysis (1986)
    Springer
    Atomic energy 60 (1986), S. 222-227 
    Details
    ISSN: 1573-8205
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01132307
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