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  • 1
    Digitale Medien
    Digitale Medien
    Interdependence Between Heat Solubility and Pyridinoline Contents of Squid Mantle Collagen (2001)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 66 (2001), S. 0 
    Details
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: : A considerable amount of squid mantle collagen, 45% to 70% of total collagen, was not solubilized even after 30 min of heating in boiling water with its fibrous structure left intact. Pyridinoline, one of the major intermo-lecular crosslinks in matured collagen, was more predominantly included in the insoluble collagen than in the soluble one (p 〈 0.05). These results suggest that pyridinoline is closely related to the heat solubility of squid collagen.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2621.2001.tb11329.x
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  • 2
    Digitale Medien
    Digitale Medien
    Muscle Firmness and Structure of Raw and Cooked Arrow Squid Mantle as Affected by Freshness (1999)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 64 (1999), S. 0 
    Details
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Changes in firmness and structure of arrow squid (Loligo bleekert) mantle muscle during refrigeration (5°C) were studied. Shear force of raw mantle decreased sharply between 3 and 9 h refrigeration after killing. Light microscopic observations showed many pores between muscle cells in the softened raw samples. Transmission electron microscopic observations suggested that the spaces appeared as a result of detachment of muscle cells from connective tissues. After cooking the stored raw muscle, the shear force and muscle structure were almost the same for samples with different storage times. Freshness had an influence on raw squid muscle firmness and structure but not on cooked muscle.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2621.1999.tb15105.x
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  • 3
    Digitale Medien
    Digitale Medien
    Dependence of the x-ray photoacoustic signal intensity of copper on sample thickness and modulation frequency (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 72 (1992), S. 5187-5189 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: The hard x-ray photoacoustic signal intensities of copper have been measured at an x-ray absorption near-edge structure (XANES) region as functions of sample thickness (from 5 to 300 μm) and modulation frequency (from 5 to 50 Hz). It is shown that the photoacoustic signal intensities show maxima at the sample thickness close to 10 μm for each modulation frequency. The x-ray photoacoustic signal varies from f−1.0 ( f denotes modulation frequency) up to 20 μm sample thickness, whereas it varies from f−0.5 beyond a 20 μm sample thickness, which is not consistent with the Rosencwaig–Gersho theory for the photoacoustic effect in solids.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.351999
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  • 4
    Digitale Medien
    Digitale Medien
    Role of Eu2+ luminescent centers in the electro-optical characteristics of red-emitting CaS:Eu thin-film electroluminescent devices with memory (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 68 (1990), S. 3578-3583 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: In order to investigate the role of the Eu2+ luminescent centers in determining the electro-optical characteristics of red-emitting CaS:Eu thin-film electroluminescent (TFEL) devices with inherent memory, light irradiation effects on these characteristics were studied. Both the threshold voltage and the response time decreased by light irradiation at wavelengths of 400–600 nm. This wavelength region coincides with that of the direct-excitation spectrum of Eu2+. Furthermore, emission peak height at the trailing edge of the pulse drive voltage increased by light irradiation in the same wavelength region. Since this emission is assumed to be caused by recombination of diffusing electrons with holes located at the ionized Eu2+ luminescent centers, increase in the emission peak height at the trailing edge of the pulse drive voltage indicated an increase in the number of the ionized Eu2+ luminescent centers. From these arguments we conclude that ionized Eu2+ luminescent center is a possible source of positive space-charge, which is known to play a decisive role in the memory and response characteristics of TFEL devices.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.346317
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  • 5
    Digitale Medien
    Digitale Medien
    Composition dependence of lattice spacing for low dislocation density undoped liquid encapsulated Czochralski GaAs crystals (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 182-184 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Crystals with varied composition were pulled by the As-partial-pressure controlled liquid encapsulated Czochralski method. The dislocation density was found to be as low as 2×103 cm−2 at the cores of the crystals. Lattice spacing (d) was measured with a precision of Δd/d ∼ 5.9 × 10−6 using synchrotron radiation. For a variation of 7×10−5 in the As-atom fraction in the crystals, the lattice spacing varied by less than 1×10−5 A(ring).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.347740
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  • 6
    Digitale Medien
    Digitale Medien
    Slow response and Eu2+-related trapping states in CaS:Eu thin-film electroluminescent devices (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 5018-5024 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: In order to clarify causes of the slow buildup of the optical output, i.e., slow optical response, in red-emitting CaS:Eu thin-film electroluminescent devices, Eu2+ concentration and temperature dependence of the response time of transferred electrons were measured. It was found that the response time increased exponentially with the increase in Eu2+ concentration and temperature. To understand these results, trapping states in CaS:Eu phosphor layer were studied by measuring temperature dependence of the following electro-optical characteristics with Eu2+ concentration as a parameter; (i) decay profile of trapped electrons, (ii) photoluminescent intensity, and (iii) photoinduced charge density. From these measurements, it was found that there existed two kinds of shallow states in the band gap of CaS. One was electron trapping states located at approximately 0.15 eV below the conduction-band minimum. These states were considered to be generated by Eu2+ clusters. The other was located at 0.06–0.08 eV below the conduction-band minimum. These states were considered to be 5d-excited states of isolated Eu2+ activators. Based on these experimental results, an energy band model for CaS:Eu thin film was proposed and causes for the slow optical response were discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.349006
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  • 7
    Digitale Medien
    Digitale Medien
    Electro- and photo-luminescent quenching effects imposed by field-induced ionization of the Eu2+ luminescent centers in CaS:Eu thin films (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 7225-7230 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: It is found that both the high-field electroluminescent (EL) and photoluminescent intensities of CaS:Eu thin films were quenched by an applied electric field. This quenching was found to be caused by a field-induced ionization of impact-excited Eu2+ luminescent centers. This ionization was known to play an important role in the memory and slow response characteristics of CaS:Eu thin-film electroluminescent devices. Evidence for field-induced ionization of Eu2+ was obtained from the following measurements of CaS:Eu; (i) the first and second EL emission peaks, (ii) photoluminescence, and (iii) photocapacitance.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.347617
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  • 8
    Digitale Medien
    Digitale Medien
    Development of a fluorescent x-ray source for medical imaging : Proceedings of the 5th international conference on synchrotron radiation instrumentation (1995)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 66 (1995), S. 1981-1983 
    Details
    ISSN: 1089-7623
    Quelle: AIP Digital Archive
    Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: A fluorescent x-ray source for medical imaging, such as K-edge subtraction angiography and monochromatic x-ray CT, has been developed. Using a 6.5 GeV accumulation ring in Tsukuba, fluorescent x rays, which range from about 30 to 70 keV are generated by irradiating several target materials. Measurements have been made of output intensities and energy spectra for different target angles and extraction angles. The intensities of fluorescent x rays at a 30 mA beam current are on the order of 1–3×106 photons/mm2/s at 30 cm from the local spot where the incident beam is collimated to 1 mm2. A phantom which contains three different contrast media (iodine, barium, gadolinium) was used for the K-edge energy subtraction, and element selective CT images were obtained. © 1995 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.1145776
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  • 9
    Digitale Medien
    Digitale Medien
    A scanning x-ray microscope using circularly polarized radiation at the TRISTAN accumulation ring and its application to observation of ferromagnetic domains : Proceedings of the 5th international conference on synchrotron radiation instrumentation (1995)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 66 (1995), S. 1534-1536 
    Details
    ISSN: 1089-7623
    Quelle: AIP Digital Archive
    Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: A scanning x-ray microscope using circularly polarized radiation has been constructed at the beamline NE1B of the 6.5-GeV TRISTAN accumulation ring (AR). It uses a Fresnel zone plate as an x-ray focusing lens. Its spatial resolution has been evaluated to be ∼1.2 μm at the energy of 933 eV. Depending on the relative orientation between the photon spin and the local magnetization direction, the magnetic domains recorded in a piece of videotape have been successfully observed visually at the L2,3 absorption edges of cobalt. The contrast of the image arises from the magnetic circular dichroism in core-level photoemission of ferromagnets. The observed contrast was certainly reversed between L2 and L3 edges. © 1995 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.1145901
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  • 10
    Digitale Medien
    Digitale Medien
    Characterization of lattice spacing and inclination around cells in liquid-encapsulated Czochralski GaAs crystals using a 100×100 μm2 incident x-ray beam (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 80 (1996), S. 1352-1356 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Lattice spacing and inclination around cells were investigated precisely for both undoped high etch-pit-densities (EPD) liquid-encapsulated Czochralski (LEC) GaAs crystal of the order of 104 cm−2 and undoped As-ambient LEC (As-LEC) crystal of low EPD of the order of 103 cm−2. Measurement of the lattice spacing and the inclination was carried out by the triple crystal method using a 100×100 μm2 size incident beam of high-intensity synchrotron radiation. It was revealed that the lattice spacing varied by almost Δd, on the order of 10−4 A(ring), due to the cellular structure of the high EPD crystal. In addition, the low EPD GaAs crystal grown by the As-LEC method showed considerably less variation in lattice spacing and inclination than the high EPD LEC GaAs crystal. © 1996 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.362934
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