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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 36 (1980), S. 490-492 
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The lattice energies and the solid-state energies of eomplexation of a number of benzo- and naphtho- quinones and -hydroquinones are calculated by methods making use of atom-atom potentials. For the lattice energies, quantitative agreement with experimental data is satisfying. For the much smaller energies of complexation, qualitative agreement, with the right sign and of the right order of magnitude, is obtained.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Substance Abuse 4 (1992), S. 197-207 
    ISSN: 0899-3289
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine , Psychology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 53 (1988), S. 2386-2388 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The magnetic and structural properties of ion beam sputtered Fe/CoNbZr multilayers were studied as a function of the CoNbZr and Fe layer thickness. Good soft-magnetic properties (coercivity 〈40 A/m and permeability 〉1000) are obtained only when the Fe grains are small, which is the case for multilayers with Fe layer thicknesses below 10 nm and CoNbZr layer thicknesses above 4 nm. Thick CoNbZr layers (〉4 nm) are amorphous and repeated nucleation of Fe grains is observed. When the CoNbZr layers are too thin (〈3 nm) they are crystalline and do not interrupt the Fe grain growth. The resulting columnar growth of Fe throughout the total film thickness leads then to a drastic decrease of permeability and increase of coercivity.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 66 (1989), S. 748-755 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The magnetic and structural properties of ion-beam-sputtered Fe/FeCrB and Fe/CoNbZr multilayers were studied as a function of the FeCrB and CoNbZr layer thicknesses. Good soft-magnetic properties (coercivity 〈60 A/m and permeability 〉1000) are obtained only when Fe grains are small, which requires, on the one hand, multilayers with Fe layer thicknesses below 10 nm and, on the other hand, FeCrB interlayers with thicknesses above 1 nm or CoNbZr interlayers with thicknesses above 3 nm. In this case interlayers are amorphous, which induces repeated nucleation of Fe grains. Only at FeCrB thicknesses of 1 nm are the interlayers crystalline due to interface mixing. This in contrast to CoNbZr interlayers which in addition grow epitaxially in a crystalline structure up to thicknesses of 3 nm. When interlayers are crystalline columnar growth of Fe results. As a consequence coercivity increases and permeability decreases.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 5131-5133 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The magnetic and structural properties of ion-beam and rf sputtered Fe/amorphous FeCrB multilayers were studied as a function of Fe and FeCrB layer thicknesses. The material is magnetically soft [μ (10 MHz)≈2000, Hc〈100 A/m] and has a saturation magnetization ≈1.8 T if the FeCrB layer thickness is larger than 1 nm and the Fe thickness substantially lower than the domain wall thickness in Fe, 55 nm. The magnetostriction is dependent on the ratio of Fe and FeCrB layer thicknesses. Magnetostriction close to zero can be achieved, even after annealing to 350 °C. Domain patterns show the presence of a weak magnetic anisotropy.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 3560-3562 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Domain patterns and hysteresis curves were studied on field annealed amorphous ribbons of Co70.3Fe4.7Si15B10. The domain structure was observed with the longitudinal Kerr effect. Hysteresis curves and permeabilities were measured at frequencies up to 10 MHz and in fields up to 2 kA/m in the length direction of the ribbon. The frequency dependence of the permeability and the hysteresis curves in the MHz range, measured after annealing in a field perpendicular to the ribbon axis in the plane of the ribbon, can be fully explained by assuming that only rotation contributes to the magnetization and that losses are due to eddy currents. Specimens annealed in a field perpendicular to the ribbon plane behave similarly. After annealing in a field parallel to the ribbon axis, however, only wall displacements occur, leading in the MHz range to a low permeability and large additional contributions to the losses.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 81 (1997), S. 1838-1846 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Anhysteretic magnetization is the magnetization that results if a constant bias field and an alternating field with decreasing amplitude are applied simultaneously to a ferromagnetic sample. Both anhysteretic magnetization and magnetization curves were measured on strips of iron shielding material in two cases where the product of the demagnetization factor and magnetization is much smaller than or comparable with the external field. The influence of demagnetizing fields on the measured effective anhysteretic permeability can be described neither by "normal'' shearing of the magnetization curve nor by a dependence predicted by Néel for anhysteretic permeability. A crucial role in Néel's theory is played by so-called "frozen magnetization.'' During anhysteretic magnetization an increasing fraction of the magnetization ceases to follow the applied alternating field and remains fixed. Comparison with Preisach models suggests that deviation from normal behavior is connected with a gradual rather than an instantaneous buildup of frozen magnetization. It is concluded that Néel's theory gives a qualitative but not a quantitative explanation of the dependence of anhysteretic permeability on demagnetizing fields in the material investigated. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Addictive Behaviors 17 (1992), S. 149-157 
    ISSN: 0306-4603
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine , Psychology
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Addictive Behaviors 17 (1992), S. 27-33 
    ISSN: 0306-4603
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine , Psychology
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Psychopharmacology 130 (1997), S. 69-78 
    ISSN: 1432-2072
    Keywords: Key words Menstrual ; Hormones ; Benzodiazepine ; Allopregnanolone ; Subjective effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  This study investigated hormone levels and mood in normal women to explore relationships between levels of circulating hormones and i) baseline mood states and ii) effects of triazolam on mood. Certain ovarian hormones or their metabolites have direct actions on neuronal receptors. These actions may result in changes in mood state, or changes in responses to psychoactive drugs which act on the same receptors. The present study explored relationships between estrogen, progesterone and a metabolite of progesterone, allopregnanolone, and the mood-altering and performance effects of an acute dose of triazolam. Triazolam is a short-acting benzodiazepine which acts via the GABAA receptor complex. Twenty women received triazolam (0.25 mg) or placebo at the follicular, ovulatory and luteal phases of their menstrual cycle. Each subject participated in six conditions (i.e., drug and placebo at each of the three phases), across two menstrual cycles. Dependent measures included self-reported mood states, psychomotor performance, and plasma levels of estradiol, progesterone, allopregnanolone, and triazolam. Mood and performance measures were not clearly related to hormone levels when data from all three phases were examined. However, within the luteal phase, higher levels of allopregnanolone were associated with lower self-reported arousal before any drug administration (i.e., at baseline). After administration of triazolam, most subjects reported the expected decreases in ratings of arousal. However, the subjects with the highest levels of allopregnanolone reported increases in ratings of arousal. Thus, hormone levels were related to mood and responses to triazolam, particularly during the luteal phase of the cycle. However, the drug-hormone interactions on mood and behavior were complex.
    Type of Medium: Electronic Resource
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