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  • 1
    Electronic Resource
    Electronic Resource
    Effects of a Benzothiazepine Calcium Blocker on Electrolyte Alteration in Human Ischemic and Reperfused Myocardium
    Amsterdam : Elsevier
    Journal of Molecular and Cellular Cardiology 26 (1994), S. 1037-1044 
    Details
    ISSN: 0022-2828
    Keywords: Ca accumulation ; Diltiazem ; Electrolyte alteration ; Ischemia ; Myocardium ; Reperfusion ; X-ray microanalysis
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1006/jmcc.1994.1124
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  • 2
    Electronic Resource
    Electronic Resource
    High-pressure Brillouin study of solid HBr at pressures up to 7 GPa (1999)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 111 (1999), S. 10617-10621 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: High-pressure Brillouin scattering measurements have been carried out in orientationally disordered (OD) phases I and I′ of solid HBr, which yielded the first determination of acoustic velocities for all directions, the refractive index, the polarizability, the density, adiabatic elastic constants (C11, C12, and C44), bulk modulus, and the elastic anisotropy as a function of pressure up to 7 GPa and at room temperature. The I→I′ phase transition in solid HBr was confirmed on the discontinuous pressure dependence at P=2.3 GPa for average errors of the least-squares fit by the analysis of in situ Brillouin spectroscopy. These elastic properties of solid HBr are compared with recent results in the OD phase I of solid HCl. We suggest that the form of the potential energy function for intermolecular forces in solid HBr is similar to that in HCl. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.480414
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  • 3
    Electronic Resource
    Electronic Resource
    Observation of spin-glass freezing in the S=1 linear-chain Heisenberg antiferromagnet NENP : The 40th annual conference on magnetism and magnetic materials (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 6167-6169 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have observed spin-glass freezing in a nominally pure single crystal of the S=1 linear-chain Heisenberg antiferromagnet Ni(C2H8N2)2NO2(ClO4)(NENP) by direct current (dc), linear alternating current (ac), and nonlinear ac susceptibility measurements. A possible origin of this spin-glass freezing is discussed. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.362061
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  • 4
    Electronic Resource
    Electronic Resource
    (NH4)2Sx-treated InP(001) studied by high-resolution x-ray photoelectron spectroscopy (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 76 (1994), S. 3059-3062 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The chemical state of sulfur on (NH4)2Sx-treated InP(001) surfaces has been studied by high-resolution x-ray photoelectron spectroscopy. We find three kinds of chemical states of sulfur (S2p3/2 lines at 161.2, 162.0, and 163.4 eV) on the sample treated at RT. It is suggested that they correspond to sulfur in phosphorus sites (in the second layer of the InP(001) surface), to sulfur bonded to indium on the first layer, and to elemental sulfur on sulfide, respectively. One (S2p3/2=162.0 eV) of them becomes predominant with long-time exposure to atmosphere at RT. Upon annealing the sample at 400 °C, the 163.4 eV line disappears, while the lines at 162.0 and 161.2 eV remain on the surface. A model of the treated surface is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.357487
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  • 5
    Electronic Resource
    Electronic Resource
    Enhancement of human fibroblast growth and other dermatological effects induced by cell extract from heat-shocked blue green alga (Cyanobacteria) (2004)
    Oxford, UK : Blackwell Science Ltd
    International journal of cosmetic science 26 (2004), S. 0 
    Details
    ISSN: 1468-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: It has been known that high amounts of ‘heat shock proteins (HSPs)’ are produced under heat and other environmental stresses in cells. Recently, it was reported that HSP could also be accumulated in some dermal cells to protect the cellular proteins from damage caused by ultraviolet radiation. Here, the authors have focused on thermophilic cyanobacteria and the heat shock treatment. Thermophilic cyanobacteria are known to thrive under extreme environmental conditions, and produce distinctively high amounts of HSP when exposed to higher temperatures. We tested cell extract from heat-shocked cyanobacterial cells on a number of skin-related biological activities and found it significantly effective. The cyanobacterial cells, originally collected from a spa as hot as 55 °C, were cultivated in the laboratory at 50 °C and broken by a freeze-fracture method. The extract thus obtained had a superoxide dismutase (SOD)-like activity and inhibited lipid peroxide formation. We found that the extract obtained from the heat-shocked (at 63 °C) cells showed a much stronger SOD-like activity, while the inhibitory effect on lipid peroxide formation remained almost the same. Furthermore, the SOD-like activity could withstand heat up to 70 °C for as long as 1 h. Most remarkably, supplementing this heat-shocked extract strongly promoted the proliferation of human dermal fibroblast culture. Extracts from the cells grown at a regular temperature (50 °C) did not promote the proliferation of the fibroblasts. The heat-shocked extract was fractionated by ultrafiltration for further analysis. A fraction (molecular weight: 10 000–30 000) has shown the strongest activity so far. These results indicate that the heat-shocked cyanobacterial extract with its increased amounts of HSPs is a promising potent ingredient for anti-aging cosmetic materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-2494.2004.00224_5.x
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  • 6
    Electronic Resource
    Electronic Resource
    Experimental study on a precession-free rotor suspended by magnets (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 61 (1987), S. 822-826 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A high-speed rotor which is characterized by a mechanical precession eliminator and by a magnetic suspension has been constructed. In this instrument, a cylindrical rotor 2 cm (0.02 m) in diameter and 20 cm (0.2 m) long was made of aluminum. The moment of inertia of this rotor was approximately 86 g cm2 (8.6×10−6 kg m2) about the long axis. A stable rotation of 120 000 rpm was obtained in air as well as in vacuum. The rotor was suspended vertically by a set of suspension magnets at the top of the rotor and a set at the bottom. In addition, the bottom of the rotor is flexibly supported by a ruby bearing which moves smoothly on a plate but is constrained by friction. When precession of the rotor begins, the frictional force eliminates the precession intrinsically. Measurements of slowing rate for the revolution were made at several different air pressures. There is good agreement with the theory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.338129
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  • 7
    Electronic Resource
    Electronic Resource
    Emission life and surface analysis of barium-impregnated thermionic cathodes (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 74 (1993), S. 6482-6487 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Emission life of small Ba-impregnated thermionic cathodes suitable for use in TV tubes is investigated systematically. Cathodes are covered with an Os layer to enhance the emissivity. They have an unusual emission life in that the emission current decreases gradually with time and then drops abruptly. The early gradual decrease in emission at high cathode temperatures is caused by the phase change of the Os layer to OsW2. A linear relationship is found to exist between the logarithm of the lifetime and the reciprocal of the cathode temperature. This life end is believed to happen after the end of the reduction reaction between BaO and the porous W body and after ceasing replenishment of the low work function Ba+-O− monolayer on the metal surface. A formula for the emission lifetime is derived from the assumption that the rate determining step is the Ba diffusion inside the pellet. Emission lifetime τ is shown to be given by τ=Ad2 exp(E/kT), where A is a constant, d is the pellet thickness, and E is the activation energy of Ba diffusion. This relation is confirmed experimentally.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.355136
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  • 8
    Electronic Resource
    Electronic Resource
    Brillouin scattering of carbon disulfide at pressures up to 70 kbar (1987)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 86 (1987), S. 7189-7193 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Brillouin scattering was measured at room temperature in liquid and solid CS2 in a diamond anvil cell up to 70 kbar. In the liquid phase, the acoustic velocity and the refractive index were determined as a function of pressure: The former allowed us to determine the equation of state, ρ=0.206 P0.40+1.144 (1 kbar≤P≤13 kbar) with density ρ in g/cm3 and pressure P in kbar, and the latter was well fitted by the Lorentz–Lorenz relation yielding the pressure-insensitive polarizability of 8.20×10−24 cm3. In the solid phase, the pressure dependence of longitudinal- and transverse-acoustic phonon velocities was determined up to the appearance of black CS2 which was formed at pressures above 70 kbar, and the high optical and elastic anisotropy of crystalline CS2 is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.452320
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  • 9
    Electronic Resource
    Electronic Resource
    Laser blow-off lithium beam probing with high temporal resolution for edge plasma diagnostics (1993)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 64 (1993), S. 2277-2284 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Laser blow-off neutral lithium beam probing with high temporal resolution has been developed to measure edge electron density profiles in a plasma. A new electron density reconstruction method, taking account of the transport of a laser blow-off beam in the plasma, improves the accuracy of the density measurement. The use of a camera system with a gate function makes it possible for us to measure the density profile with a high temporal resolution of 10–50 μs. The optimum condition for shutter timing and period to observe the Li i emission profile is discussed from the viewpoints of the beam penetration into the plasma and the accuracy of measurement. A rapid temporal evolution of the edge electron density profile during limiter biasing in a small tokamak HYBTOK-II was successfully obtained by this system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1143923
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  • 10
    Electronic Resource
    Electronic Resource
    Edge plasma density reconstruction for fast monoenergetic lithium beam probing (1993)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 64 (1993), S. 1699-1704 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Two different electron density reconstruction methods for 8-keV neutral lithium beam probing have been developed for the Compact Helical System (CHS). Density dependences on emission and ionization processes are included by using effective rate coefficients obtained from the collisional radiative model. Since the two methods differ in the way the local beam density in the plasma is determined, the methods have different applicable electron densities. The beam attenuation is calculated by iteration from the electron density profile in method I. In method II, the beam remainder at the observation point z is determined by integrating the Li i emission intensity from z toward the position of emission tail-off. At the emission tail-off, the fast lithium beam is completely attenuated. Selecting an appropriate method enables us to obtain edge electron density profile well inside the last closed flux surface for various ranges of plasma densities (1012–5×1013 cm−3). The electron density profiles reconstructed by these two different methods are in good agreement with each other and are consistent with results from ruby laser Thomson scattering.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1143996
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