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  • 1
    Electronic Resource
    Electronic Resource
    Uptake of Phthalate Esters, Di(n-butyl)phthalate and Di(2-ethylhexyl)phthalate, as Environmental Chemicals in Monkeys in Japan (2000)
    Springer
    Bulletin of environmental contamination and toxicology 64 (2000), S. 679-685 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001280000057
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  • 2
    Electronic Resource
    Electronic Resource
    Purification and characterization of the parvalbumin from monkey skeletal muscle
    Amsterdam : Elsevier
    Comparative Biochemistry and Physiology -- Part B: Biochemistry and 96 (1990), S. 665-669 
    Details
    ISSN: 0305-0491
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0305-0491(90)90211-B
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  • 3
    Electronic Resource
    Electronic Resource
    Observation of resonant tunneling through single self-assembled InAs quantum dots using electrophotoluminescence spectroscopy (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 4332-4336 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The resonant tunneling through single InAs quantum dots embedded in an n-GaAs/i-Al0.38Ga0.62As/n-GaAs diode has been studied by using microscopic electrophotoluminescence spectroscopy. Many sharp luminescence lines which originated from single quantum dots were observed by injecting resonant electrons from the emitter to the dots. Bias dependence of a single luminescence line was investigated. The peak intensity showed triangular dependence which was similar to the current–voltage characteristics of electron resonant tunneling from three dimension to zero dimension. When the bias voltage was increased, the peak energy slightly shifted to a lower energy indicating the existence of Stark effect, and the linewidth slightly increased. The higher the luminescence energy was, the broader the linewidth was. This result agrees with the calculated resonant level width. The lifetime of resonant states was estimated to be 2.4–27 ps for luminescence linewidth of 250–22 μeV. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.373074
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  • 4
    Electronic Resource
    Electronic Resource
    Light-induced changes in hydrogenated and deuterated amorphous silicon films and solar cells (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 59 (1991), S. 3294-3296 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Optical, electronic, and structural properties of high-quality a-Si:H and a-Si:D films are compared. While having essentially similar electrical properties, a-Si:D shows higher stability of the photoconductivity (σph) under illumination, and faster thermal recovery of the degraded σph. These differences may originate from differences in the Si—Si and Si—H/D bonding structures, indicated by Raman scattering and infrared measurements. In agreement, single-junction solar cells with an intrinsic a-Si:D layer show smaller light-induced changes than a-Si:H cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.105710
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  • 5
    Electronic Resource
    Electronic Resource
    The complete amino acid sequence of bullfrog (Rana catesbeiana) parvalbumin pI4.97
    Amsterdam : Elsevier
    FEBS Letters 268 (1990), S. 249-251 
    Details
    ISSN: 0014-5793
    Keywords: Amino acid sequence ; Calcium binding protein ; Frog phylogeny ; Molecular evolution ; Muscle protein ; Parvalbumin
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0014-5793(90)81020-O
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  • 6
    Electronic Resource
    Electronic Resource
    Non-decay type fast-setting calcium phosphate cement using chitosan (1996)
    Springer
    Journal of materials science 7 (1996), S. 317-322 
    Details
    ISSN: 1573-4838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract A non-decay type fast-setting calcium phosphate cement (nd-FSCPC) has been described, which did not decay but set within approximately 5–6 min even when the paste was immersed in serum immediately after mixing, and which forms hydroxyapatite as its end product. nd-FSCPC was produced by adding sodium alginate to the liquid phase of the base cement FSCPC. Sodium alginate forms a water-insoluble gel, and reduces the process of fluid penetration into the paste which is the cause of decay. The aim of this investigation was to confirm the mechanism of the non-decaying behaviour of nd-FSCPC proposed in a previous paper, using another chemical with properties similar to those of sodium alginate. Also, it was intended to further improve both the mechanical properties and tissue response of nd-FSCPC. Chitosan, which also forms a water-insoluble gel in the presence of calcium ions and has been reported to have pharmacologically beneficial effects on osteoconductivity, was added to the liquid phase of the base cement FSCPC. The cement thus prepared showed behaviour similar to that of nd-FSCPC using sodium alginate. The cement paste did not decay but set within approximately 5–6 min even when immersed in serum immediately after mixing. DTS value of the set mass was approximately 3–4 MPa, slightly lower than that of nd-FSCPC using sodium alginate, and no inhibitory effect was observed for the transformation of cement component to apatite within the range used in this investigation (up to 1.5%). Therefore, it was concluded that the mechanism of non-decaying behaviour was, at least in part, reduction of fluid penetration into the cement paste. nd-FSCPC using chitosan showed slightly poorer mechanical properties than that using sodium alginate. However, pharmacological effects such as osteoconductivity could be expected in nd-FSCPC using chitosan. Thus, this cement may be useful as a more sophisticated bioactive cement than nd-FSCPC using sodium alginate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00154542
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  • 7
    Electronic Resource
    Electronic Resource
    Amount of hydroxyl radical on calcium-ion-implanted titanium and point of zero charge of constituent oxide of the surface-modified layer (1998)
    Springer
    Journal of materials science 9 (1998), S. 89-92 
    Details
    ISSN: 1573-4838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract To compare the surface properties of calcium-ion (Ca2+)-implanted titanium with those of titanium and to investigate the mechanism of bone conductivity of Ca2+-implanted titanium, amounts of hydroxyl radical of Ca2+-implanted titanium and titanium were estimated. Also, the point of zero charge (p.z.c.) of oxide constituting surface oxides of Ca2+-implanted titanium and titanium was determined. Results showed that the amount of active hydroxyl radical on Ca2+-implanted titanium was found to be significantly larger than that on titanium, indicating that the number of electric-charging sites of Ca2+-implanted titanium in electrolyte is more than that of titanium. The p.z.c. values of rutile (TiO2), anatase (TiO2), and perovskite (CaTiO3), were estimated to be 4.6, 5.9, and 8.1, respectively. Thus, Ca2+-implanted titanium surface is charged more positively in bioliquid than titanium, accelerating the adsorption of phosphate ions. © 1998 Chapman & Hall
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008847014938
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  • 8
    Electronic Resource
    Electronic Resource
    Rotational occlusion of the vertebral artery at the atlantoaxial joint: is it truly physiological? (1994)
    Springer
    Neuroradiology 36 (1994), S. 273-275 
    Details
    ISSN: 1432-1920
    Keywords: Vertebrobasilar insufficiency ; Positional occlusion of the vertebral artery ; Atlantoaxial joint
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We present a patient with vertebrobasilar insufficiency, with vertigo and horizontal nystagmus, induced by turning the head to the right. Angiography demonstrated transient occlusion of the left vertebral artery at the atlantoaxial joint during rotation of the head. The pathogenesis and angiographic findings are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00593258
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of transient stress on acoustic emission behaviour during firing of dental porcelain (1992)
    Springer
    Journal of materials science 27 (1992), S. 3118-3122 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Acoustic emission activity was measured in the glass transition range of dental porcelain during firing. Transient and residual stresses in porcelain during cooling from a temperature higher than porcelain sag point and during re-heating of the tempered porcelain were calculated by computer simulation using a viscoelastic stress analysis. The detected acoustic emission event was discussed with the relative rules of the simulated transient stresses. High acoustic emission activity was detected at the temperature where the internal stress faded away for heating and build up for cooling. The low-level acoustic emission pulses were only detected in the following conditions: (1) in the temperature range where porcelain behaved like an elastic solid; (2) at temperatures higher than the deformation point of porcelain; (3) with a re-heating process of the porcelain without tempered stress. From these results, it was concluded that elastic energy is released related to transient stress in porcelain during viscoelastic deformation and can be detected by the acoustic emission method. The acoustic emission method is considered to be helpful in non-destructive testing in order to understand transient stress due to viscoelastic deformation of glassy materials in heat treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01154127
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  • 10
    Electronic Resource
    Electronic Resource
    Morphological and electrophysiological characteristics of the epipharyngeal sensilla of the silkworm, Bombyx mori (1995)
    Springer
    Entomologia experimentalis et applicata 77 (1995), S. 167-176 
    Details
    ISSN: 1570-7458
    Keywords: epipharyngeal sensilla ; contact chemoreception ; electrophysiology ; Lepidoptera ; Bombyx mori
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract One pair of gustatory sensilla was found on the epipharynx ofBombyx mori larvae, and some morphological and electrophysiological characteristics of the epipharyngeal sensilla were investigated. They are sensilla coeloconica composed of a small papilla with a pore at the tip and a swelling of cuticle encircling the papilla. Three bipolar neurons innervate each sensillum. One neuron is an inositol receptor which responds to inositol only. Another cell responds with action potentials of relatively large amplitude to some feeding deterrent substances, such as strychnine nitrate. The thresholds of these cells for inositol and strychnine nitrate are approximately 10−4 M and 10−7 M, respectively. At least two kinds of spikes can be observed when these sensilla are stimulated with some salts and acids. Dose-response relationships and time courses of responses to inositol and strychnine nitrate were also examined in this study.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02383030
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