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  • 1
    Electronic Resource
    Electronic Resource
    Ion channeling study of the lattice disorder in neutron irradiated GaP (1999)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 86 (1999), S. 2352-2354 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The lattice disorder in GaP produced by fast neutrons with a fluence of 2.1×1018 cm−2 has been investigated with 1.5 MeV 4He+ channeling. The slight increase in the 〈111〉 aligned yield for irradiated crystals indicates that each primary knock-on (PKO) produces approximately 7×102 displaced atoms. Channeling studies also show a spread distribution of randomly located defects imbedded in the lattice structure. On the other hand, P antisite (PGa) defects produced by neutron irradiation are ∼2 per PKO. Irradiated samples also show a volume expansion of 0.13%. It is suggested that the lattice expansion mainly induced by vacancy–interstitial clusters arises from the displacement atoms rather than PGa defects. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.371054
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  • 2
    Electronic Resource
    Electronic Resource
    Relation between the substitutional fraction and electrical activation of carbon in heavily C-ion implanted GaAs (1999)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 85 (1999), S. 6926-6928 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Nuclear reaction analysis (NRA), using the 12C(d,p)13C reaction, in conjunction with Rutherford backscattering spectrometry (RBS) in the channeling geometry was used to evaluate the substitutional fraction of C in (100)-oriented semi-insulating GaAs implanted with 12C ions to a dose of 5×1016 cm−2. The substitutional fraction of the implanted 12C evaluated by NRA was 19% in the samples annealed at 600 °C, whereas the electrical activation rate of the same sample was 2.1%, as measured by the van der Pauw method. It is suggested that a possible origin of this discrepancy is the compensating centers such as As vacancy (VAs) and/or VAs-CAs complex introduced in the annealing processes. This was supported by both the surface precipitation of As observed by Raman scattering and the enhancement of the surface peak in RBS-channeling yield which was measured by using a 1.5 MeV 4He+-ion beam. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.370293
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  • 3
    Electronic Resource
    Electronic Resource
    ZnSe homoepitaxial layers grown at very low temperature by atmospheric pressure metalorganic vapor-phase epitaxy (1989)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 65 (1989), S. 2728-2733 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: ZnSe homoepitaxial layers with high crystalline quality were grown on (100) ZnSe substrates (grown by the iodine vapor transport method) between 190 and 250 °C. The surface morphologies of homoepitaxial layers (homoepilayers) grown below 250 °C were all mirrorlike. The concentration of self-activated (SA) centers is related to the growth temperature. The band-edge photoluminescence (PL) intensity increases drastically with increasing temperature from 190 up to 210 °C, decreases above 210 °C, and the SA-PL intensity increases monotonically as the growth temperature increases. The mechanism of suppressing the occurrence of SA centers below 250 °C is assumed that the concentration of Zn vacancies diffused from the highly iodine-doped ZnSe substrates into the ZnSe homoepilayers reduces at this temperature region. The SA-PL intensity of the ZnSe homoepilayer with the strongest band-edge emission (grown at 210 °C) is the same or weaker than that of the best ZnSe heteroepitaxial layer (heteroepilayer). Below 200 °C, the FWHM of the ZnSe (400) diffraction is 14 arcsec which is the best value we have ever obtained, though the growth temperature seems to be too low to maintain the crystalline quality. The comparison on the crystalline quality with the ZnSe heteroepilayers is discussed in detail from the viewpoints of the epitaxial growth mechanism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342760
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  • 4
    Electronic Resource
    Electronic Resource
    Dynamic Properties of the Phospholipid Bilayer of the Erythrocyte Membrane in the Presence of α-Tocopherol (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 570 (1989), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1989.tb14941.x
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  • 5
    Electronic Resource
    Electronic Resource
    Dynamics of concentration fluctuations for butylcellosolve in water (1985)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 82 (1985), S. 2718-2722 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The coexistence curve, the shear viscosity, and the angular and the spectral distribution of scattered light have been measured for butylcellosolve in water near its lower critical mixing point. We have examined the validity of the pseudospinodal concept for the interpretation of the diffusion coefficient near the critical point. The critical exponents obtained with the assumption of the pseudospinodal agree with the recent experimental and the theoretical values. The universal dynamic amplitude ratio R=1.03±0.06 obtained in the present work is in disagreement with the value R=1.2 calculated from the renormalization-group theory but in good agreement with R=1.03 of the prediction by Burstyn et al. The diffusion coefficient as a function of temperature and concentration is well represented in terms of a scaled function.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.448269
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  • 6
    Electronic Resource
    Electronic Resource
    Effect of temperature on the deformability of a lamprey, Entosphenus japonicus, and Pacific salmon, Oncorhynchus keta, red blood cells, studied using a modified filtration method (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 33 (1988), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The rates of filtration through Nuclepore filters (5 or 8 μm) of blood from lampreys and Pacific salmon have been studied using a method which visualizes the flow pattern. From these measurements, passage times for single red blood cells have been calculated and serve as an index of their deformability. The deformability increases as temperature is raised in vitro, but even at 5°C the passage time of lamprey blood is relatively rapid. The increase in deformability with a rise in temperature is small relative to that found in other fish such as yellowtail and carp.The distribution of red cell volumes has shown the presence of a secondary peak for salmon blood taken during surgery which is reduced following recovery, the main peak being at a lower volume.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1988.tb05544.x
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  • 7
    Electronic Resource
    Electronic Resource
    The Role of Glutamate in the Neurotoxic Effects of Methamphetamine (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 801 (1996), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1996.tb17452.x
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  • 8
    Electronic Resource
    Electronic Resource
    Multinuclear macromolecule metal complexes 2. Preparation and characterization of Prussian blue and its analogs bonded to pofy(vinylamine hydrochloride) (1987)
    Springer
    Colloid & polymer science 265 (1987), S. 786-790 
    Details
    ISSN: 1435-1536
    Keywords: Mixed valence complex ; Prussian blue analog ; intervalence charge transfer ; polyion complex
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Prussian blue and its analogs bonded to poly(vinylamine hydrochloride) (PVAm · HCl) containing FeII or FeIII and M2+ (M=Fe, Co, Cu) in a 1∶1 molar ratio were obtained by the reaction of [Fe(CN)6] n− (n=3,4) with M2+ ion-PVAm · HCl mixture in aqueous solution. Under a limited polymer concentration (TVAm/TFe over 10), these polymer complexes thus obtained were stable and soluble in water. By casting these solutions, colored films can be produced. The formation of Prussian blue and its analogs bonded to PVAm · HCl was also investigated by the Benesi-Hildebrand method. The molar extinction coefficients of intervalence charge transfer (FeII→FeIII, CoII→FeIII, FeII→CuII) band for MFe(CN)6](n−2)− bound to PVAm · HCl (M=Fe, Co, Cu) were found to be 10,100−9601 · mol−1 · cm−1 at 25
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01418454
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  • 9
    Electronic Resource
    Electronic Resource
    Effects of nitric oxide synthesis inhibition on methamphetamine-induced dopaminergic and serotonergic neurotoxicity in the rat brain (1996)
    Springer
    Journal of neural transmission 103 (1996), S. 671-680 
    Details
    ISSN: 1435-1463
    Keywords: Nitric oxide (NO·) ; methamphetamine ; neurotoxicity ; dopamine ; serotonin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We examined effects of nitric oxide (NO·) synthesis inhibition on methamphetamine (MA)-induced dopaminergic and serotonergic neurotoxicity. The toxic dose of MA (5 mg/kg, sc, X4) significantly decreased contents of dopamine (DA), dihydroxyphenylacetic acid (DOPAC) and homovanillic acid (HVA) in the striatum (ST), and significantly decreased contents of serotonin (5-HT) in the ST, nucleus accumbens (NA) and medial frontal contex (MFC). Coadministration with a NO· synthase inhibitor, Nω-nitro-L-arginine methyl ester (LNAME) (30 mg/kg, ip, X2), reduced the MA-induced decreases in contents of DA, DOPAC and HVA in the ST, but not reduced the MA-induced decreases in contents of 5-HT in the ST, NA and MFC. These findings suggest that the MA-induced dopaminergic, but not serotonergic neurotoxicity, may be related to the neural process such as NO· formation caused by the activation of postsynaptic DA receptor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01271227
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  • 10
    Electronic Resource
    Electronic Resource
    Differential effects of haloperidol, clozapine, and fluperlapine on tuberoinfundibular dopamine neurons and prolactin secretion in the rat (1987)
    Springer
    Journal of neural transmission 68 (1987), S. 227-240 
    Details
    ISSN: 1435-1463
    Keywords: Neuroleptics ; dopamine ; prolactin ; hypothalamus ; clozapine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Two atypical neuroleptic agents, clozapine and fluperlapine, produced rapid elevations in plasma PRL concentrations that were similar in magnitude to those produced by haloperidol. However, the PRL response to clozapine or fluperlapine was of much shorter duration than that elicited by haloperidol. Clozapine, but neither fluperlapine nor haloperidol, produced a rapid increase in the activity of tuberoinfundibular dopamine (TIDA) neurons, as evidenced by an enhanced accumulation of dihydroxyphenylalanine (DOPA) in the median eminence after the inhibition of DOPA decarboxylase. The clozapine-induced increase in DOPA accumulation was evident within 30 minutes after its administration and persisted for at least 4 hours. The clozapine-induced increase in the activity of TIDA neurons may account, in part, for the abbreviated PRL response to this neuroleptic. In addition, ability to produce a short-lived increase in PRL secretion in the rat appears to be common to the atypicl neuroleptic drugs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02098500
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