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  • 1
    Electronic Resource
    Electronic Resource
    Ultrathin Si buffer layers to improve the exchange bias between Ni–Fe and FeMn layers (1999)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 85 (1999), S. 4934-4936 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Ni–Fe/FeMn bilayers were deposited by using dual ion beam sputtering apparatus. In order to promote (111) orientation in γ-FeMn layers and to exhibit exchange bias field Hex, Si and/or silicon nitride (Si3N4) layers were deposited as buffer layers. Although silicon nitride (Si3N4) buffer layers did not improve (111) orientation in FeMn layers, as well as in Ni–Fe layers, an amorphous Si buffer layer only 1 nm thick improved (111) orientation in FeMn layers and increased Hex to above 100 Oe. FeMn/Ni–Fe bilayers deposited on Si(0.5 nm)/Si3N4(1 nm) bilayered buffer layer also exhibited high Hex of about 130 Oe. This result implies that the ultrathin a-Si buffer layer was effective in improving (111) orientation in Ni–Fe layers. Very thin Si/Si3N4 bilayers may be applicable as dielectric layers in tunneling magnetoresistive spin valve devices. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.370050
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  • 2
    Electronic Resource
    Electronic Resource
    Development of a medium power, submillimeter wave gyrotron using a 17 T superconducting magnet (1995)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 2 (1995), S. 3246-3248 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: GYROTRON FU IV, a frequency tunable gyrotron for spectroscopy in the submillimeter wavelength range using a 17 T superconducting magnet, has been designed and constructed. Simulations predict that the gyrotron will emit radiation at high frequencies up to 394 GHz (TE041 cavity mode) at the fundamental of the electron cyclotron frequency, up to 858 GHz (TE091 mode) at the second harmonic and up to 1301 GHz (TE8 11 1 mode) at the third harmonic. Preliminary experimental results have demonstrated operation from 158 to 443 GHz at the fundamental and from 336 to 838 GHz at the second harmonic. Output powers are several hundred watts and efficiencies several percent. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.871156
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  • 3
    Electronic Resource
    Electronic Resource
    Development of submillimeter wave gyrotron using 12 T superconducting magnet (1995)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 2 (1995), S. 2110-2116 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The development of a submillimeter wave, high-harmonic gyrotron using a 12 T superconducting magnet is described. It has achieved frequencies as high as 636 GHz (corresponding to a wavelength of 472 μm) in second harmonic operation. Many resonances could be obtained as a single mode without competing modes. Typical output power is several hundred watts at both the fundamental and the second harmonic. At low beam currents (Ib∼0.5 A), third harmonic operation has been obtained. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.871297
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  • 4
    Electronic Resource
    Electronic Resource
    Symmetries and dissociation dynamics of F 1s core excited states of BF3 (1997)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 107 (1997), S. 2419-2423 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Using the photoelectron–energy-selected photoion coincidence technique, we find that photoions of BF3 with kinetic energy larger than 4 eV are predominantly F+ in the F 1s ionization region whereas B+ is more intense than F+ at the F 1s→2a2″ excitation. Two partial cross sections σ|| and σ⊥ for A1′→E′ parallel and A1′→A2″ perpendicular transitions are obtained from the angular distribution measurement of energetic photoions and the symmetries of some F 1s core excited states are confirmed. The dissociation dynamics of the F 1s−12a2″ core excited state are discussed in detail. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.474585
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  • 5
    Electronic Resource
    Electronic Resource
    Angle-resolved photoelectron and photoion study on the shape resonance in the B 1s ionization region of BF3 (1997)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 107 (1997), S. 2415-2418 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Angle resolved photoelectron and photoion spectroscopy has been used to investigate the e′ shape resonance just above the B 1s ionization threshold of BF3. The B 1s photoelectron asymmetry parameter β is ∼0 in the vicinity of the peak of the shape resonance and increases with increase in photon energy, illustrating good agreement with a theoretical prediction. From the angular distribution measurement of energetic F+ fragments following B 1s photoionization, we have decomposed the photoionization cross section into two components σe′ and σa2″ for the B 1s→e′ parallel and B 1s→a2″ perpendicular transitions and confirmed that the shape resonance is in the e′ symmetry component. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.474584
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  • 6
    Electronic Resource
    Electronic Resource
    Measuring the Social-Care Service Needs of Impaired Elderly People in Japan (1996)
    Cambridge : Cambridge University Press
    Ageing and society 16 (1996), S. 315-332 
    Details
    ISSN: 0144-686X
    Source: Cambridge Journals Digital Archives
    Topics: Medicine , Sociology
    Notes: This study aims to measure objectively and/or estimate the needs of impaired elderly persons and their families for social care services. The research was carried out in Maebashi, a medium size Japanese city. In our study, ‘impaired elderly persons’ included both physically and/or mentally impaired persons. In total, 693 impaired elderly persons and their families were classified according to 20 specific types of need: these ‘need types’ were cross-tabulated with two sets of factors: (1) Severity of impairments and (2) Difficulty of caregivers in providing the required care. A standard model of the service provision necessary for each ‘need type’ was established through group consultation with social care service professionals. Finally, the total amount of each service required in the city was calculated. Major findings are: (1) Our estimates indicate that 7.1 per cent of all persons 65 and over residing in Maebashi City were physically and/or mentally impaired to a certain degree. (2) Forty per cent of these elderly people were being cared for by caregivers who themselves had serious difficulties. (3) The demand for social care services in local Japanese cities is high. In order for this demand to be met a substantial expansion of both nursing home care and in-home care services is required.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0144686X00003445
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  • 7
    Electronic Resource
    Electronic Resource
    The anisotropy of surface morphology characteristics of rock discontinuities (1996)
    Springer
    Rock mechanics and rock engineering 29 (1996), S. 47-59 
    Details
    ISSN: 1434-453X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01019939
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  • 8
    Electronic Resource
    Electronic Resource
    Generating of moving structural systems in multiple evolutionary environments (1998)
    Springer
    Structural optimization 16 (1998), S. 258-268 
    Details
    ISSN: 0934-4373
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract An evolutional system design methodology for generating conceptual moving structural designs by computer is prognosed in which multiobjective optimization strategies are used. In this methodology, operators for evolution are defined as factors for causing evolution, so that actions by these operators on prior design solutions will generate new design solutions. Here, a number of environments are prepared, each of which has different evaluative functions expressed as multiobjective optimization problems. The evolution of design solutions thus occurs in a variety of environments. A given environment can be considered as imposing a set of criteria in which specific abilities are crucial or advantageous. Using a variety of environments to generate solutions has advantages: (1) a broader range of solutions is obtained, and (2) by moving a solution generated in one environment to a different one, additional “species” of solutions can be generated to good advantage. The proposed methodology is applied to computer-generated moving structural systems consisting of arms and joints, as well as the data for moving these structures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01271432
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  • 9
    Electronic Resource
    Electronic Resource
    Inhibitory Effects of 1,25(OH)2D3 on Membrane-Associated and Cytosolic Casein Kinase Activity in MC3T3-E1 Osteoblast-like Cells (1998)
    Springer
    Calcified tissue international 63 (1998), S. 320-324 
    Details
    ISSN: 1432-0827
    Keywords: Key words: 1,25(OH)2D3— Membrane-associated casein kinase — Cytosolic casein kinase — MC3T3-E1 osteoblast-like cells.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract. The secretion of phosphorylated matrix proteins is high in osteoblasts. Phosphorylation of these proteins may be catalyzed by casein kinases (CK), and CK may play an important role in the site of bone mineralization. In this study, we examined the effects of 1,25(OH)2D3 on CK activities in MC3T3-E1 osteoblast-like cells. Different concentrations (ranging from 10−7 to 10−11M) of 1,25(OH)2D3 were included in a culture medium. After incubation for various lengths of time, MC3T3-E1 cells were homogenized and segregated into cytosolic (c) and microsomal (m) fractions. To measure CK activity, each fraction was used as an enzyme source to phosphorylate casein. MC3T3-E1 cells showed the highest cCK activity after incubation for 21 days, and showed the highest mCK activity after incubation for 14 days. 1,25(OH)2D3 inhibited mCK activity at the early stage of culture, but inhibited cCK activity at the late stage of culture. In contrast, 1,25(OH)2D3 had a slight stimulatory effect on CK activity in the culture medium of MC3T3-E1 cells. Our data suggest that cCK and mCK may play different roles in the function of osteoblasts, and 1,25(OH)2D3 regulates intracellular and extracellular casein kinase activities related to the function of osteoblasts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002239900534
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  • 10
    Electronic Resource
    Electronic Resource
    Microsomal casein kinase II in endoplasmic reticulum- and Golgi apparatus-rich fractions of ROS 17/2.8 osteoblast-like cells: An enzyme that modifies osteopontin (1995)
    Springer
    Calcified tissue international 57 (1995), S. 285-292 
    Details
    ISSN: 1432-0827
    Keywords: Casein kinase II ; Osteoblasts ; Osteopontin ; Phosphorylation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract Osteopontin is an acidic phosphoprotein containing casein kinase II (CKII) phosphorylatable sites and an acidic amino acid cluster. The metabolically 32P-labelings of both serines and threonines in vitro in osteopontin immunoprecipitated from rat osteoblast-like ROS 17/2.8 cells may suggest that casein kinase II catalyzes this modification. The enzyme occurs in microsomal fractions of rat osteoblast-like ROS 17/2.8 cells. Subcellular fractions containing endoplasmic reticulum and Golgi apparatus were isolated by differential centrifugation and were identified according to their ultrastructures and the presence of marker enzymes such as glucose-6-phosphatase and thiamine pyrophosphatase, respectively. Both fractions phosphorylated the partially dephosphorylated osteopontin and the specific substrate peptide RRREEETEEE. Endoplasmic reticulum-catalyzed peptide phosphorylation was 2.7 times lower than that of Golgi although both endoplasmic reticulum- and Golgi-catalyzed peptide reactions were 50% inhibited by 20 and 100 ng/ml heparin, respectively. Western blot analysis revealed that both fractions contained osteopontin and microsomal CKII. Furthermore, microsomal CKII was immunogold-labeled in endoplasmic reticulum and Golgi apparatus. Heparin inhibition and utilization of [γ-32P]GTP as a phosphate donor by both fractions confirmed their capacity to phosphorylate osteopontin. The results suggest that microsomal CKII modifies the acidie matrix proteins during transportation. These matrix phosphoproteins may participate in the mineralization process of hard tissues.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00298884
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