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  • 1
    Electronic Resource
    Electronic Resource
    Twisted plywood structure of an alternating lamellar pattern in cellular cementum of human teeth (2000)
    Springer
    Anatomy and embryology 202 (2000), S. 25-30 
    Details
    ISSN: 1432-0568
    Keywords: Keywords Cementoblasts ; Collagen fibrils ; Lamellar structure ; Maceration ; Scanning electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Human cellular cementum was examined by scanning electron microscopy to elucidate the manner of the alternate lamellar pattern forming the cellular cementum. Specimens were demineralized, trimmed with a freezing microtome, and treated by NaOH-maceration. This procedure was chosen to avoid artifacts in the fibril arrangement, and to study the fibrous architecture in detail. For comparison, non-demineralized, polished and HCl-etched specimens were also prepared. In the NaOH-macerated specimens, the lamellar pattern of the cellular cementum conformed to the twisted plywood principle of bone lamellation with a periodic rotation of matrix fibrils resulting in an alternating lamellar pattern. In contrast, matrix fibrils were irregularly arranged without indication of rotation of matrix fibrils in the polished and etched specimens. Our results suggest that polishing and etching procedures cause damage to fibrils and fibril arrangement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00008241
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  • 2
    Electronic Resource
    Electronic Resource
    Geochemical analyses of geological layers and groundwater flows (2000)
    Springer
    Environmental geology 39 (2000), S. 1147-1154 
    Details
    ISSN: 1432-0495
    Keywords: Key words Geological layers ; Groundwater flow ; X-ray fluorescent spectroscopy ; Chlorine element
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract X-ray fluorescent spectroscope analysis easily finds ratios of geochemical elements in soil. Applying the method of ratio matching to measured ratios, the classification of geological layers, and the flow directions of groundwater can be determined. This method is applied to three hill slopes in Japan and the results are in good agreement with the observations and measurements of soil cores obtained by drilling. The classification of geological layers is found to be quantitatively connected with the rates of organic matter in soil cores.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002549900086
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  • 3
    Electronic Resource
    Electronic Resource
    Seasonal changes of direction of sand movements on Kotogahama Coast (2000)
    Springer
    Environmental geology 39 (2000), S. 641-648 
    Details
    ISSN: 1432-0495
    Keywords: Key words Littoral drift of sand ; X-ray fluorescent spectroscope ; Correlation number ; Ratio matching
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract  X-ray fluorescent spectroscope-analysis and the method of ratio matching can determine mean directions of sand movement and geochemical classifications of sand grains. The result can also evaluate the physical condition of seabeds in a study area (erosion or accretion). This method is applied to a sedimentation problem in the fishing port of Tsurugiji in Japan and the result is in agreement with the comparison of the change of sea bottom topography measured in different years. The seasonal changes of sand movement on this coast and sedimentation in the port are also investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002540050476
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  • 4
    Electronic Resource
    Electronic Resource
    Direct Synthesis of Lead Phosphate Thin Film with Monodispersed Pb Nanocrystals by Pulsed Laser Deposition (2003)
    s.l. ; Stafa-Zurich, Switzerland
    Journal of metastable and nanocrystalline materials Vol. 15-16 (Apr. 2003), p. 355-360 
    Details
    ISSN: 1422-6375
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/43/transtech_doi~10.4028%252Fwww.scientific.net%252FJMNM.15-16.355.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Welding Phenomena of Aluminum-Copper Alloy in Electron Beam Welding (2000)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 331-337 (May 2000), p. 1763-1768 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/04/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.331-337.1763.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    A Monte Carlo study of the pattern formation during transitions in n-alkane crystals (2000)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 112 (2000), S. 7627-7633 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The rotator phase transition in n-alkane was recently found to show a characteristic pattern of preferred growth along the b-axis (shorter axis) of the unit cell. In order to investigate the origin of this anisotropic growth, a pattern formation in n-alkane crystal is studied during the transition between the low temperature orthorhombic (LO) phase and the rotator (R) phase by use of the Monte Carlo method. Of possible factors that will influence the growth pattern, we here concentrate on the mode of chain packing by assuming that the chains have rigid planar zigzag conformation and are placed in a regular orthohexagonal lattice. The herringbone order in the LO phase is found to develop rather quickly resulting characteristic domains with the (100) and (110) boundaries. The domain boundaries run preferentially along the b-axis at lower temperatures and are considered as a stacking fault or antiphase boundary. The transition between the LO phase and the R phase is found to exhibit a characteristic pattern, where the R phase domains grow preferentially along the b-axis. All these behaviors are shown to originate from different energies of the (100) and (110) boundaries. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.481357
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  • 7
    Electronic Resource
    Electronic Resource
    Sex-specific growth pattern during early life history in masu salmon, Oncorhynchus masou (2004)
    Oxford, UK : Munksgaard International Publishers
    Ecology of freshwater fish 13 (2004), S. 0 
    Details
    ISSN: 1600-0633
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract –  To examine whether or not sex-specific growth occurs in fry of masu salmon Oncorhynchus masou, 90 half-sibling fry chosen from three different classes of egg size (small, medium and large) and emergence time (period from fertilisation to first feeding; early, middle and late) were raised in a tank for 60 days. In all four replications, male fry grew faster than females. The difference in growth between sexes was greater among siblings hatched from larger eggs. Fast-growing, young male masu salmon show a precocious form that tends to mature without migrating to sea. Slower growing males tend to show the anadromous form, which is only shown in females. Sex-specific life histories may influence the sex-specific growth patterns during early life history.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0633.2004.00051.x
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  • 8
    Electronic Resource
    Electronic Resource
    Quantum oscillations in two coupled charge qubits (2003)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 421 (2003), S. 823-826 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A practical quantum computer, if built, would consist of a set of coupled two-level quantum systems (qubits). Among the variety of qubits implemented, solid-state qubits are of particular interest because of their potential suitability for integrated devices. A variety of qubits based on ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature01365
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  • 9
    Electronic Resource
    Electronic Resource
    Demonstration of conditional gate operation using superconducting charge qubits (2003)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 425 (2003), S. 941-944 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Following the demonstration of coherent control of the quantum state of a superconducting charge qubit, a variety of qubits based on Josephson junctions have been implemented. Although such solid-state devices are not currently as advanced as microscopic qubits based on nuclear magnetic ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature02015
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  • 10
    Electronic Resource
    Electronic Resource
    Intranasal application of purified protein derivative suppresses the initiation but not the exacerbation of allergic rhinitis in mice (2002)
    Oxford, UK : Blackwell Science Ltd
    Clinical & experimental allergy 32 (2002), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Several epidemiological and experimental studies have demonstrated that exposure to pathogens such as those from the genus Mycobacterium leads to the suppression of allergic sensitization and inflammation. However, little is known as to whether pathogen-derived soluble antigens have the potential to modulate the pathogenesis of allergic rhinitis.Objective We sought to determine whether application of purified protein derivative (PPD) from Mycobacterium tuberculosis can suppress the initiation and/or exacerbation of allergic rhinitis using a recently developed murine model.Methods First, we investigated whether a single intranasal application of PPD could elicit cytokine production in the nose by RT-PCR. BALB/c mice were repeatedly sensitized with Schistosoma mansoni egg antigen (SEA) intranasally without an adjuvant. PPD was applied through different routes either before or after sensitization. The production of SEA-specific antibodies, nasal eosinophilia and cytokines by nasal lymphocytes was compared among mice that had or had not received PPD treatment.Results IFN-γ, but not IL-4, was detected in the nasal tissue 12 to 48 h after a single intranasal application of 10 µg PPD. Repeated intranasal application of PPD prior to and during sensitization with SEA significantly inhibited the production of both SEA-specific IgE/IgG1 and nasal eosinophilia. Moreover, it partially inhibited the production of IL-4 by nasal lymphocytes in response to SEA. Conversely, this treatment led to a significant increase in IFN-γ production. On the other hand, PPD applied through the footpad had no effect over the same period. Repeated intranasal application of PPD after sensitization with SEA had no exacerbative effect on allergic inflammation.Conclusion These results indicate that the local application of PPD, and the subsequent induction of IFN-γ, inhibits the initiation, but not the exacerbation, of allergic rhinitis in mice. This suggests that pathogen-derived antigens have potential for use in the prevention and prophylaxis of allergic rhinitis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2222.2002.01389.x
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