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  • Articles  (123)
  • 1980-1984  (123)
  • Physics  (123)
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  • Articles  (123)
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  • 11
    Electronic Resource
    Electronic Resource
    Polymer-catalyst-modified cadmium sulfide photochemical diodes in the photolysis of water (1984)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 88 (1984), S. 5577-5582 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j150667a024
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  • 12
    Electronic Resource
    Electronic Resource
    Structures of 1,4,10,13-tetrathia-7,16-diazacyclooctadecane, C12H26N2S4, and 7,16-bis(4-chlorobenzoyl)-1,4,10,13-tetrathia-7,16-diazacyclooctadecane, C26H32Cl2N2O2S4 (1984)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 40 (1984), S. 2061-2064 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270184010635
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  • 13
    Electronic Resource
    Electronic Resource
    Erratum (1982)
    Springer
    Polymer bulletin 8 (1982), S. 385-385 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00264930
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  • 14
    Electronic Resource
    Electronic Resource
    The characteristics of cobalt or copper salt-coordinated poly(4-vinylpyridine-co-2,4-diamino-6-vinyl-s-triazine) membrane for reverse osmosis (1981)
    Springer
    Polymer bulletin 6 (1981), S. 169-174 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Poly(4-vinylpyridine-co-2,4-diamino-6-vinyl-s-triazine) membranes in which a part of pyridine rings was coordinated with cobalt or copper salt, considerably enhanced salt rejection without appreciable reduction of water permeability. This is attributed to the change in the membrane structure into a polar character. The heat treatment of the uncharged membrane in the salt solution formed the same structure on the surface, but was not effective for improvement of salt rejection, only increasing the membrane strength to a small extent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00956284
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  • 15
    Electronic Resource
    Electronic Resource
    Determination of velocity distribution of metallic atoms in plasma devices with a rapid-frequency-scan dye laser (1984)
    Springer
    Applied physics 33 (1984), S. 171-177 
    Details
    ISSN: 1432-0649
    Keywords: 42.55m ; 52.70
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A rapid-frequency-scan dye laser was developed for the measurement of the velocity-distribution functions of impurity atoms sputtered due to the high-temperature plasma-surface interaction. In order to confirm the effectiveness of this rapid-scan technique, measurements of the Doppler profiles of Fe atoms sputtered by Ar ion-beam bombardment with energy 3 keV were performed. A scanning range of more than 40 pm at λ ≈300 nm was obtained with a spectral bandwidth of 1.5 ∼2 pm and good linearity. Doppler profiles were determined in various scattering conditions, and excellent performance of this technique was demonstrated. The distortion error caused by line saturation was analytically discussed, and it is shown that the effect of this error is not so serious (less than 10%) even for highly saturated excitation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00688525
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  • 16
    Electronic Resource
    Electronic Resource
    Nankai Trough: A hot trench? (1984)
    Springer
    Marine geophysical researches 6 (1984), S. 187-203 
    Details
    ISSN: 1573-0581
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Heat flow estimated from the gas hydrate layers on the landward slope of the Nankai Trough reveals that heat flow increases downslope toward the trench floor. This data plus six new heat flow values obtained by a conventional probe and two values available from DSDP drill holes give a fairly detailed heat flow distribution in the Nankai Trough area, when combined with the already existing data set. There appears to be a zonal pattern parallel to the trough axis, with a high heat flow zone on the floor of the trough that is quite anomalous for a subduction zone. It might be explained as a result of subduction of the hot portion of the Philippine Sea plate, i.e. the Shikoku Basin, and/or of more local effects such as heating due to intrusion of hot water from subducted sediments to shallow depth beneath the trough floor. Surface heat flow patterns landward of the trough were calculated for a simple thermal model of subduction. Perfect reproduction of the observed zonal pattern is difficult to achieve by the simple model, suggesting the necessity for further heat flow and other observations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00285959
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  • 17
    Electronic Resource
    Electronic Resource
    Measurements of 129 I in meteorites and lunar rock by tandem accelerator mass spectrometry (1983)
    [s.l.] : Nature Publishing Group
    Nature 305 (1983), S. 611-612 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The 129I in meteorites is produced by cosmic ray secondary neutron reactions on tellurium1"3, and the 129I in lunar surface materials is produced mainly by spallation on barium and rare earth elements. Because of the difficulty in measuring concentrations of only a few times 106 atoms per g in ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/305611a0
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  • 18
    Electronic Resource
    Electronic Resource
    Photoluminescence of CuGaS2 and heterostructure formation with sputtered ZnS (1983)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 2 (1983), S. 1933-1938 
    Details
    ISSN: 0392-6737
    Keywords: Photoluminescence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto I cristalli di CuGaS2 cresciuti per trasporto di iodio mostrano fotoluminescenza a temperatura ambiente a 2.45 eV e 1.44 eV. Si mostra che la distribuzione spettrale dell'emissione verde è relativamente ben descritta dalla curva calcolata per una transizione diretta da banda a banda con selezionek. Si è tentata la formazione dell'eterogiunzione tra cristalli di CuGaS2 trattati con zolfo e film amorfi di ZnS a bassa resistività, preparati mediante spruzzamento catodico a temperatura ambiente. La caratteristicaI–V del diodo mostra un comportamento rettificante, ma non si è osservata luminescenza per iniezione.
    Abstract: Резюме Кристаллы CuGaS2 о⇃наруживают при комнатной температуре фатолюминесценцию при 2.45 эВ и 1.44 эВ. Показывается что спектральное распределение зеленого излучения относительно хорошо описывется вычисленной кривой для прямого перехода зоназона сk-отбором. Исследуется образование гетероперехода между кристаллами CuGaS2 и аморфными пленками ZnS с низким сопротивлением, притотовленными распылением при комнатной температуре.I–V характеристика диода обнаруживает выпрямляющее, но инжекционная люминесценция не наблюдается.
    Notes: Summary CuGaS2 crystals grown by iodine transport exhibit room temperature photoluminescences at 2.45 eV and at 1.44 eV. The spectral distribution of the green emission is shown to be relatively well described by the calculated curve for a direct band-to-band transition withk-selection. The heterojunction formation has been tried between sulfur-treated CuGaS2 crystals and low-resistivity amorphous ZnS films prepared by sputtering at room temperature. TheI–V characteristic of the diode shows rectifying behaviour, but no injection luminescence has been observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457890
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  • 19
    Electronic Resource
    Electronic Resource
    Photoluminescence of as-grown CuAlS2 prepared by iodine transport method (1983)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 2 (1983), S. 1939-1943 
    Details
    ISSN: 0392-6737
    Keywords: Photoluminescence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Due nuove bande di luminescenza sono state osservate in cristalli di CuAlS2 come-cresciuti, preparati mediante trasporto di iodio da Al2S3 e Cu2S. La banda con la minore lunghezza d'onda a 77 K appare a circa 2.95 eV, mostrando uno spostamento di spettro con l'intensità di eccitazione, ed è considerata come dovuta all'emissione di coppie donatore-accettore. A temperatura ambiente, l'emissione sembra diventare una transizione da donatore a buca libera. L'emissione con la maggiore lunghezza d'onda appare a 1.8 eV con una grande semiampiezza di 0.5 eV, ha una sua caratteristica banda di eccitazione ed è considerata dovuta ad un centro localizzato.
    Abstract: Резюме В кристаллах CuAlS2, приготовленных методом переноса иода из Al2S2 и Cu2S, наблюдаются две новых люминесцентных полосы. Коротковолновая полоса при 77 К появляерся 2.95 эВ, обнаруживая спектральный сдвиг с интенсивностью возбуждения. Полагается, что эта полоса обусловлена излучением доноракцепторных пар. При комнатной температуре излучение, по-видимому, изменяет переход, «донор-свободная дырка». Длинноволновое излучение появляется при 1.8 эВ с широкой полушириной 0.5 эВ, обладая собственной характеристической полосой возбуждения. Полагается, что это излучение обусловлено локализованным центром.
    Notes: Summary Two new luminescence bands have been observed in as-grown CuAlS2 crystals prepared by iodine transport from Al2S3 and Cu2S. The shorter-wave-length band at 77K appears at around 2.95 eV, showing a spectral shift with excitation intensity, and is considered to be due to a donor-acceptor pair emission. At room temperature, the emission seems to change to a donor-to-free-hole transition. The longer-wave-length emission appears at 1.8 eV with broad half-width of 0.5 eV, having its own characteristic excitation band, and is considered to be due to a localized centre.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457891
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  • 20
    Electronic Resource
    Electronic Resource
    Ising model with competing interactions on a Cayley tree (1983)
    Springer
    Journal of statistical physics 33 (1983), S. 419-436 
    Details
    ISSN: 1572-9613
    Keywords: Cayley tree ; iteration ; fixed points ; cycles ; attractors ; chaos ; spin glass ; frequency locking ; devil's staircase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An iterative scheme is developed for a renormalized effective nearest-neighbor couplingK r and effective field per siteK r for spins in therth shell of a Cayley tree with nearest neighborJ, and next nearest neighborJ′, interactions between Ising spins on the lattice. In addition to the expected paramagnetic, ferromagnetic, and antiferromagnetic phases, we find an intermediate range ofJ'/J 〈 0 values whereX r, and Kr iterate to a continuous or quasicontinuous attractor in theX-K plane. In this range the local magnetization is mainly chaotic with oscillatory glasslike behavior. Embedded in the chaos, however, are regions of periodic and commensurate phases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01009804
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