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  • 1
    Electronic Resource
    Electronic Resource
    Platelet superoxide dismutase in migraine and tension-type headache (1994)
    USA/Oxford, UK : American Association for the Study of Headache/Blackwell Science Ltd
    Cephalalgia 14 (1994), S. 0 
    Details
    ISSN: 1468-2982
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Superoxide dismutase (SOD) is a radical-scavenging enzyme. We determined Cu, Zn-SOD concentrations and activities in platelets from subjects with migraine and tension-type headaches. Thirty migraine without aura (MWoA) patients, 9 migraine with aura (MWA) patients, and 53 tension-type headache patients were selected for study. Thirty healthy volunteers composed the control group. Concentrations of platelet SOD were determined using enzyme-linked immunosorbent assay techniques. The activity of platelet SOD was determined by measuring reductivity of nitroblue tetrazolium. Low concentrations of platelet SOD were found in patients with MWA and MWoA. Platelet SOD activity decreased in MWA patients but not in patients with MWoA or tension-type headaches. These findings suggest vulnerability to oxidative stress in patients with migraine. It is suggested that low platelet SOD levels may play an important role in the etiology of migraine.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1468-2982.1994.014003215.x
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  • 2
    Electronic Resource
    Electronic Resource
    High-sensitive Pockels field sensor with a dielectric mirror (1994)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 65 (1994), S. 2351-2355 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The highly sensitive field sensor with a Pockels crystal which was devised by us has been modified by using a light reflection technique. By replacing a metallic mirror with a dielectric mirror which is sputtered on one end face of the Pockels crystal, the new field measuring system has an advantage of precisely measuring the field distribution in the long gap discharge. This is the case when the field sensing part consisting of the Pockels crystal is isolated from the main field measuring system and both are connected to each other with a long light guide cable. Based on our experiments, we found that the measurable minimum field strength in the long gap discharge is 2 V/cm with the accuracy of 16 dB and 0.2 V/cm with the critical accuracy of 0 dB. Furthermore, we point out that the size of the field sensing part can be reduced down to 1 mm in diameter by using a dielectric mirror and a light guide cable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1144687
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  • 3
    Electronic Resource
    Electronic Resource
    Measurement of electron densities in electron cyclotron resonance plasmas for etching of III-V semiconductors (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 4206-4210 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The average electron densities in CH4/H2/Ar and CCl2F2/O2 electron cyclotron resonance discharges typical of those used for etching InP, GaAs, and related materials have been measured approximately 4 cm downstream from the multipolar microwave source as a function of microwave power (50–300 W), additional radio-frequency power (10–50 W), pressure (1–20 mTorr), flow rate (30–90 standard cubic centimeters per minute) and gas composition. At 1 mTorr pressure and 10 W rf, the electron densities (and semiconductor etch rates) increase rapidly with microwave power, from 1.3×1011 cm−3 for 5CH4/17H2/8Ar and 6×1010 cm−3 for 28CCl2F2/2O2 discharges at 50-W microwave power, to 9×1011 cm−3 and 3×1011 cm−3, respectively at 300-W microwave power. At the highest microwave power levels (≥200 W) the InP and GaAs etched surface morphologies are rough due to preferential removal of one of the lattice constituents from each material. The electron densities in both types of discharge show moderate increases with increasing rf power level, pressure or higher Ar or O concentrations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.348390
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  • 4
    Electronic Resource
    Electronic Resource
    Multifractality in edge localized modes in Japan Atomic Energy Research Institute Tokamak-60 Upgrade (2001)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 8 (2001), S. 1248-1252 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The temporal losses of confinement during edge localized modes in the Japan Atomic Energy Research Institute Tokamak-60 Upgrade (JT-60U) show multifractal scaling and the spectra are generally smooth, but in some cases there are signs of discontinuous derivatives. Dynamics of the Sugama–Horton model, interpreted as edge localized modes, also display multifractal scaling. The spectra display singularities in the derivative, which can be interpreted as a phase transition. It is argued that the multifractal spectra of edge localized modes can be used to discriminate between different experimental discharges and validate edge localized mode models. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1354647
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  • 5
    Electronic Resource
    Electronic Resource
    Local plasmon photonic transistor (2001)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 78 (2001), S. 2417-2419 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A proposal for a photonic transistor is made and some basic proving experiments are described. These experiments show that by focusing two laser beams (405 and 635 nm) in one small spot on a high-speed rotating optical disk, a large signal enhancement is observed. It was found that a plasmon interaction generated between a silver light-scattering center and recorded small marks in the optical disk with a super-resolution near-field structure produced the large signal amplification in the spot (〈1 μm). A modulated signal of the blue laser was enhanced by 60 times by controlling the red laser power from 1.5 to 3.5 mW. It has been shown that the system has the potential to realize all-thin-films photonic transistors by using local plasmon amplification. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1367905
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  • 6
    Electronic Resource
    Electronic Resource
    Magneto-optical disk properties enhanced by a nonmagnetic mask layer (2000)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 77 (2000), S. 1774-1776 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Magneto-optical (MO) recording signals were enhanced by a nonmagnetic mask layer combining a silver oxide (AgOx) thin film and near-field coupled super-resolution. The signal intensity of 300 nm marks recorded by a 680 nm laser and a lens numerical aperture of 0.55 with light-intensity modulation was amplified 100 times in comparison with conventional MO media. Resolution of less than 200 nm was achieved by near-field coupling between a light-scattering center generated in the AgOx film and light polarization of MO marks. To identify near-field enhancement, we simulated electrical field components, finding that near-field coupling between the light-scattering center and a MO layer enhances MO signals about 20 times due to the surface plasmon effect. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1290489
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  • 7
    Electronic Resource
    Electronic Resource
    Diffusion barrier effects of transition metals for Cu/M/Si multilayers (M=Cr, Ti, Nb, Mo, Ta, W) (1994)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 64 (1994), S. 1511-1513 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In order to find appropriate diffusion barrier materials for Cu, the diffusion of Cu into Si through various barrier metals M (M=Cr, Ti, Nb, Mo, Ta, W) was investigated. The behavior of Cu in Cu/M/Si multilayers was measured after annealing using x-ray diffraction analysis, secondary ion mass spectroscopy, Rutherford backscattering spectroscopy, and electric resistance change. Only Cu/Ta/Si and Cu/W/Si multilayers retained their multilayer structures after annealing at 600 °C×1 h in H2 without resistivity increases. Multilayers of the other metals did not retain their structures after the same annealing condition. This difference in the barrier properties of the transition metals appeared to be related to the metal-Cu binary phase diagrams and their self-diffusion coefficients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.111875
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  • 8
    Electronic Resource
    Electronic Resource
    Purification of Glycomacropeptide from Caseinate Hydrolysate by Gel Chromatography and Treatment with Acidic Solution (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 65 (2000), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: : Glycomacropeptide (GMP) was purified from chymosin-hydrolyzed caseinate solution by the procedure involving: (1) gel chromatography on Sephacryl S-200 at pH 7.0 to obtain a crude GMP fraction; (2) addition of acidic solution, pH 3.5 to the crude glycomacropeptide to precipitate contaminating protein and/or peptide; and (3) re-chromatography of the material soluble in the acidic solution on Sephacryl S-200 at pH 3.5. The purified GMP accounted for 5.3% of dry weight of caseinate hydrolysate, and 0.7% of dry weight of sodium caseinate powder. The preparation was of considerably high purity with its amino-acid composition showing only traces (each 〈 1 residue / peptide) of arginine, histidine, phenylalanine, and tyrosine, the amino acids that do not occur in GMP.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.2000.tb16054.x
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  • 9
    Electronic Resource
    Electronic Resource
    Optical high-sensitive field sensor using a Pockels crystal (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 5582-5585 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The sensitivity of an optical field sensor with a Pockels crystal of LiNbO3 for measuring a field distribution in a long-gap discharge has been much improved by using an intensity difference method with an intensity-modulated laser beam. The signal-to-noise ratio (S/N) is also improved by 37 dB from that without the above-mentioned method. The resultant sensitivity of the new field measuring system is 100 times higher than that of the previous one. Finally, it is possible to measure an electric field down to 7.5 V/cm in the long-gap discharge with high accuracy corresponding to the S/N ratio of 20 dB and 1.5 V/cm with the accuracy of 6.0 dB.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1143385
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  • 10
    Electronic Resource
    Electronic Resource
    Structure of daphmacropodine, new alkaloid from Daphniphyllum macropodum, and its chemical conversion into daphmacrine (1973)
    s.l. : American Chemical Society
    The @journal of organic chemistry 38 (1973), S. 2404-2405 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00953a026
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