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  • 1
    Electronic Resource
    Electronic Resource
    Serotonin Metabolism and Release in Frontal Cortex of Rats on a Vitamin E-Deficient Diet (1996)
    Oxford, UK : Blackwell Science Ltd
    Journal of neurochemistry 66 (1996), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: Rats were fed a control or vitamin E (all-rac-α-tocopheryl acetate)-deficient diet for 3 or 12 weeks. Serotonin (5-HT), 5-hydroxyindoleacetic acid (5-HIAA), tryptophan, and α-tocopherol concentrations were determined in the frontal cortex using HPLC. α-Tocopherol concentrations fell significantly to 27% of control values at 12 weeks. Tissue 5-HT, 5-HIAA, and tryptophan concentrations were not significantly altered by the vitamin E-deficient diet at either time point. In vivo microdialysis revealed normal basal and K+-stimulated concentrations of 5-HT and 5-HIAA, but extracellular concentrations of tryptophan were significantly decreased after 3 weeks on the vitamin E-deficient diet, which resulted in an increase in the tissue/extracellular ratio and suggested a change in compartmentation. However, after 12 weeks on the deficient diet these values had returned to normal. Results in general indicate that a prolonged and substantial depletion of brain vitamin E can occur without major disturbance of serotonergic function.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1471-4159.1996.66020860.x
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  • 2
    Electronic Resource
    Electronic Resource
    Spectroscopic control of iron oxide dissolution in two ferralitic soils (1996)
    Oxford, UK : Blackwell Publishing Ltd
    European journal of soil science 47 (1996), S. 0 
    Details
    ISSN: 1365-2389
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Second derivative diffuse reflectance spectroscopy (DRS) in the visible range has been used to characterize changes in colour and identify the nature of Fe oxides which withstand reduction during experimental yellowing of reddish materials. It is accepted that haematite dissolves preferentially and faster than goethite, and Al-substitution controls the dissolution kinetics of Fe oxides. However, DRS has shown that haematite is more resistant than predicted and that some Fe-oxides, probably trapped within kaolinite particles, are inaccessible to solvents. DRS allows the nature of dissolved phases at each deferration step to be determined and changes in Al-content of residual phases throughout deferration to be followed. It also demonstrated that Helmholtz coordinates correlate very well with changes in Fe-oxide mineralogy and are preferable to redness ratings when monitoring differential dissolution of Fe oxides through colour measurements. DRS is a powerful and sensitive technique for monitoring the dissolution of Fe oxides in soils.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2389.1996.tb01367.x
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  • 3
    Electronic Resource
    Electronic Resource
    Irregular grain structure in micromagnetic simulation : The 40th annual conference on magnetism and magnetic materials (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 4695-4697 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A randomized microstructure based on the Voronoi diagram is proposed for micromagnetic models. Simulations illustrate variability of extrinsic magnetic properties with microstructure, medium noise dependence on medium properties, and jitter dependence on trackwidth. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.361708
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  • 4
    Electronic Resource
    Electronic Resource
    Track-width dependence of transition jitter : The 40th annual conference on magnetism and magnetic materials (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 5652-5654 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A simple model that represents the microstructure of magnetic medium as a rectangular tesselation predicts that the mean-square jitter is inversely proportional to the track width. We test this prediction using different width heads as well as creating different track widths by partially erasing the original track. We also simulate these experiments using a micromagnetic model. Our experimental and simulation results are found to be in agreement with the prediction. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.362271
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  • 5
    Electronic Resource
    Electronic Resource
    Origin of the charge carriers accumulation/depletion in porous silicon contacted by a liquid phase (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 2513-2516 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The origin of the electronic free charge carriers accumulation/depletion in the porous silicon skeleton contacted with an electrolyte is determined by investigating the limiting step in the conduction process. Experimental evidences, supported by quantitative considerations, show that the porous silicon can be conductive if the free charge carriers flux supplied by the substrate is not the rate determining step of the electrical current conduction. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.361180
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  • 6
    Electronic Resource
    Electronic Resource
    Evolution of implanted carbon in silicon upon pulsed excimer laser annealing (1996)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 69 (1996), S. 969-971 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Formation of epitaxial Si1−yCy substitutional alloy layers on monocrystalline silicon surfaces with y≈1 at. % is reported. The preparation method was carbon ion implantation, followed by KrF excimer laser annealing. Results of Rutherford backscattering (RBS), secondary ion mass spectrometry (SIMS) and infrared absorption analyses are compared. The authors concluded that, up to ∼1 at. % carbon content, the dominant process is nonequilibrium trapping of carbon in substitutional lattice sites upon fast resolidification. Above this concentration the complex carbon redistribution processes are influenced by silicon carbide precipitation in the melt and segregation effects in the near-surface region. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.117098
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  • 7
    Electronic Resource
    Electronic Resource
    Transition and development of innovation capacities in Hungary (1996)
    Oxford, UK : Blackwell Publishing Ltd
    R & D management 26 (1996), S. 0 
    Details
    ISSN: 1467-9310
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: The paper attempts to synthesize the conclusions of theoretical works dealing with innovation processes and technological strategies in the frame of a national innovation system with some results from a survey of the national innovation system in Hungary.An important focus of the paper is on the transition situation in Hungary and the role science and technology play and are expected to play to influence the competitiveness of the country. Special attention is therefore given to the new actors in the system. The conclusions are expressed in the form of premises dealing with the multiple impacts of the transition on the Hungarian innovation system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-9310.1996.tb00935.x
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  • 8
    Electronic Resource
    Electronic Resource
    Learning and Memory in Honeybees: From Behavior to Neural Substrates (1996)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Neuroscience 19 (1996), S. 379-404 
    Details
    ISSN: 0147-006X
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ne.19.030196.002115
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  • 9
    Electronic Resource
    Electronic Resource
    THE SEARCH FOR THE QUARK-GLUON PLASMA (1996)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Nuclear and Particle Science 46 (1996), S. 71-107 
    Details
    ISSN: 0163-8998
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Notes: Abstract We provide an overview of the present understanding of the transition from hadrons to a quark-gluon plasma, its signatures, and the experimental results so far. We discuss results of numerical simulations of the lattice gauge theory and critically evaluate the various observables that have been proposed as signatures of the QCD phase transition. We place the existing data from relativistic heavy-ion experiments at the Brookhaven Alternating Gradient Synchrotron (AGS) and CERN Super Proton Synchrotron (SPS) into perspective and provide an overview of the techniques and strategies that will be employed in the search for the quark-gluon plasma at heavy-ion colliders, such as the Relativistic Heavy-Ion Collider (RHIC) and the Large Hadron Collider (LHC).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.nucl.46.1.71
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  • 10
    Electronic Resource
    Electronic Resource
    Hierarchic T-Cell Help to Non-Linked B-Cell Epitopes (1996)
    Oxford, U.K. and Cambridge, USA : Blackwell Science Ltd
    Scandinavian journal of immunology 44 (1996), S. 0 
    Details
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The induction of antibodies against peptides requires the presence of a T helper cell epitope. In the absence of an added T-cell epitope only 10% of the mice, or less depending on the strain, gave an antibody response to a series of peptides of the measles virus (MV) fusion (F) protein. After co-immunization with a non-covalently coupled T-cell epitope more than 60% of the peptides became immunogenic. Considerable differences became apparent when BALB/c mice were immunized with peptides in the presence of different T-cell epitopes. An immunodominant T-cell epitope of the MV-F protein was more efficient than a subdominant or a cryptic T-cell epitope in providing help to a non-linked B-cell epitope. There is both a ranking order of the amount of help which B-cell epitopes require and a ranking order for the help T-cell epitopes are able to provide. The capability of a T-cell epitope to provide help to a B-cell epitope correlated with its own immunogenicity, i.e. the intensity of the antibody response to the peptide representing the T-cell epitope. The data suggest that for each MHC class II allele there is an optimal T-cell epitope which can provide help to a maximal number of B-cell epitopes and that such a peptide can be identified by its ability to induce antibodies against itself. By using this strategy, the authors were able to induce antibodies which cross-reacted with the MV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3083.1996.d01-336.x
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