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  • Electronic Resource  (33)
  • 2005-2009  (2)
  • 1990-1994  (25)
  • 1980-1984  (6)
  • 1
    Electronic Resource
    Electronic Resource
    Raman spectroscopic and chromatographic study of the uranium isotope effect in uranyl acetate complex formation (1982)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 86 (1982), S. 1015-1018 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100395a036
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  • 2
    Electronic Resource
    Electronic Resource
    Magnetic properties of fine crystalline Fe–P–C–Cu–X alloys : The 5th Joint MMM−Intermag Conference (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 6241-6243 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The crystallization process and magnetic properties of Fe–P–C–Cu–Ge–Si amorphous alloys were investigated. After annealing above the crystallization temperature, the bcc Fe particles, with nanoscale grain size, precipitated in the amorphous alloy for a wide P concentration range. The volume ratio of the bcc Fe phase to amorphous was about 30%. The mixed phase of these alloys shows a drastic decrease of coercive force (Hc) and particle diameter (d) as P concentration increases. The lowest Hc was obtained for Fe78P16C2Cu0.5Ge3Si0.5, and Hc and d were 1.8 A/m and 16 nm, respectively. Observation by in situ Lorentz scanning electron microscopy (SEM) revealed that the width of magnetic domains were 0.01 or 0.1 mm and the domain walls with smaller bcc Fe particles moved in a weaker magnetic field than those with larger ones. So the low Hc is attributed to the decrease of magnetocrystalline anisotropy caused by fine structures. The core loss of fine crystalline Fe–P–C–Cu–Si–Mo alloy, W14/50, was 0.22 W/kg after annealing under a magnetic field of 2.4 kA/m.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.350008
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  • 3
    Electronic Resource
    Electronic Resource
    Supermodulus effect in a Au/Ni superlattice studied by a diamond anvil cell and SR x ray : Proceedings of the 4th international conference on synchrotron radiation instrumentation (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 1035-1038 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Elastic and thermal properties of Au/Ni superlattices have been investigated by x-ray diffraction on a synchrotron radiation source at the Photon Factory. An elastic response of [Au(10 A(ring))/Ni(10 A(ring))]50 to hydrostatic pressure generated by a diamond anvil cell has been measured in the layer-stacking direction. Its compressibility obtained from the pressure dependence of its superlattice period (Λ vs P) shows an anomalously small value compared with either bulk Au or Ni metal. Linear thermal expansions has also been measured by a similar method (Λ vs T). A significant anisotropic behavior between the layer-stacking and in-plane direction was found in both [Au(10 A(ring))/Ni(10 A(ring))]50 and [Au(4 A(ring))/Ni(4 A(ring))]210.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1143192
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  • 4
    Electronic Resource
    Electronic Resource
    General session II
Moderated by Yashihiro Takami: Down-Regulation of TFF Expression by TNF-α in Gastric Epithelial Cells (2005)
    Oxford, UK; Malden, USA : Blackwell Science Inc
    Wound repair and regeneration 13 (2005), S. 0 
    Details
    ISSN: 1524-475X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Aim:  Trefoil factor family (TFF) peptides are known to facilitate wound healing in gastric mucosa. However, the regulatory mechanisms of gastric TFF expression are not fully understood yet. In this study, we examined the effect of TNF-α on TFF1 and TFF2 expression in gastric epithelial cells.Methods:  MKN45 cells were used. TFF mRNA expression was analyzed by real-time quantitative RT-PCR. Promoter sequences of TFF1 gene (−956 to +36) and TFF2 gene (−912 to +24) were inserted into pGL3 vector and reporter gene assays were performed. NF-κB activity was monitored by using a NF-κB responsive element-driven reporter vector.Results:  (1) TNF-α(0.1–30 ng/ml) down-regulated TFF1 and TFF2 mRNA expression in a dose-dependent manner. (2) Reporter gene assays also confirmed the down-regulation of TFF1 and TFF2 gene transcription by TNF-α. (3) TNF-α activated NF-κB. (4) Overexpression of dominant negative IκBα prevented both TNF-α-induced NF-κB activation and TNF-α-induced down-regulation of TFF expression.Conclusions:  TNF-α down-regulates gastric TFF expression through NF-κB pathway, suggesting that TFF expression is sensitive to inflammatory stimuli.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1067-1927.2005.130116f.x
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  • 5
    Electronic Resource
    Electronic Resource
    Structural characterization of a CuO/MgO artificially superstructured film by the x-ray diffraction method (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 1952-1955 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A CuO/MgO epitaxial artificially superstructured film [CuO(50 A(ring))/MgO(40 A(ring))]40 was successfully grown and its structure was studied by x-ray diffraction (XRD). The film was found to have a texture in which the (111) planes of monoclinic CuO and the (001) planes of cubic MgO were layered perpendicular to the film plane. Its lateral structure was revealed by precession photographs where the CuO [101¯] axis is oriented approximately along the MgO [100] axis in the film plane. The XRD pattern, observed over a wide range of scattering vectors perpendicular to the film plane, was carefully analyzed by an extended step model. The fluctuation of the superlattice period was estimated to be as small as 1 A(ring).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.356343
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  • 6
    Electronic Resource
    Electronic Resource
    Application of an imaging plate to high-pressure x-ray study with a diamond anvil cell (invited) : Proceedings of the 4th International Conference on Synchrotron Radiation Instrumentation (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 967-973 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: In order to obtain reliable data on d values and integrated intensities, an imaging plate (IP) has been applied to high-pressure diffraction experiments with a diamond anvil cell using synchrotron radiation. The IP was found to be more effective than a conventional x-ray film by a factor of 30, and more effective than an energy dispersive method by several times. In order to integrate the intensity data on the IP, a histogram method was successfully developed. This combination proved to give a lattice constant with relative accuracy of 2×10−4, and observed integrated intensities which excellently agree with calculated ones.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1143793
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  • 7
    Electronic Resource
    Electronic Resource
    Extremely-low-threshold and high-temperature operation in a photopumped ZnSe/ZnSSe blue laser (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 59 (1991), S. 1401-1403 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A ZnSe/ZnSSe blue semiconductor laser was demonstrated to show very low threshold by direct photopumping of the ZnSe active layer. The lowest threshold at the excitation wavelength of 445 nm was 10 kW/cm2 at 300 K which is equivalent to the current density of 3.6 kA/cm2. This is the lowest threshold ever reported in II-VI photopumped lasers and is approaching the theoretically calculated threshold. The characteristic temperature of the threshold, which characterizes the temperature dependence of the threshold in the exponential form, was 124 K up to the measured 400 K and was comparable to III-V double-heterostructure lasers. The differential quantum efficiency remained the similar level up to 400 K and its decrease observed at 400 K was within 23% of the efficiency at 300 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.105319
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  • 8
    Electronic Resource
    Electronic Resource
    Glia maturation factor-β is produced by thymoma and may promote intratumoral T-cell differentiation (2005)
    Oxford, UK : Blackwell Science Ltd
    Histopathology 47 (2005), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Aims : To investigate whether Glia maturation factor-β (GMFB) is expressed in thymomas and is associated with T-cell development.Methods and results : We investigated the expression of GMFB by immunohistochemistry in 86 cases of thymoma classified into five type A, 35 type AB, 11 type B1, 26 type B2, and nine type B3 thymomas according to the World Health Organization classification system. Immunoblotting and in situ hybridization (ISH) studies were also performed in selected cases. The results of the immunoblot analysis were in accordance with those of immunohistochemical scoring. The ISH study ascertained the tumour cells producing the protein. Immunohistochemically, GMFB expression was observed in one (20%) of type A, 32 (80%) of type AB, all (100%) of type B1 and B2, and eight (89%) of type B3 thymoma with statistically significant differences between type A and type AB, type B1, or type B2 thymoma, and between type B3 and type AB or type B2 thymoma. There was a significant correlation between GMFB expression and the amount of accompanying non-neoplastic T cells. GMFB promoted T-cell differentiation into CD4–/CD8+ cells when analysed by two-colour flow cytometry.Conclusions : The present study suggests that T-cell development in thymoma may be maintained partly by GMFB produced by the tumour cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2559.2005.02224.x
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  • 9
    Electronic Resource
    Electronic Resource
    The resolution function of a perfect-crystal three-axis X-ray spectrometer (1983)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 39 (1983), S. 38-46 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The resolution function of a three-axis, X-ray spectrometer is considered for the case when the monochromator and analyser crystals are ideally perfect. It is shown that, for X-ray sources which produce either an ill-collimated monochromatic beam (conventional source) or a well-collimated white beam (synchrotron radiation), the resolution problem may be simplified. This simplification allows the profile of an arbitrary section of the resolution function to be expressed as a one-dimensional integral of the product of three functions; one to represent the source characteristics and the other two to describe the Darwin profiles of the monochromator and analyser crystals. The formalism is extended to describe the measurement of the resolution function by a perfect crystal mounted on the sample table of the spectrometer. Comparison of the a priori calculations with measurements made on a spectrometer at a conventional source yields very good agreement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108767383000070
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  • 10
    Electronic Resource
    Electronic Resource
    The application of a position-sensitive detector to high-pressure X-ray diffraction using a diamond-anvil cell (1980)
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 13 (1980), S. 284-289 
    Details
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: A position-sensitive detector (PSD) for Mo Kα radiation has been successfully applied to detect very weak X-rays diffracted from an extremely small volume of specimen compressed in a diamond-anvil high-pressure cell. The PSD can cover a scattering-angle range of 22.6° with an angular resolution of 0.038: in a single measurement. Remarkably rapid recording of diffraction patterns with a high S/N ratio is performed with this method at pressures higher than 10 GPa. Some diffraction patterns of iodine near the insulator-metal transition around 16–18 GPa are shown to demonstrate the usefulness and power of this PSD system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0021889880012071
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