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  • 1
    Electronic Resource
    Electronic Resource
    Modification of metal/GaN contacts with GaAs interlayers (1999)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 85 (1999), S. 6539-6541 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have investigated feasibility of GaAs interlayers for the metal/GaN interface with synchrotron-radiation photoelectron spectroscopy. We have found that the use of piranha/HCl solutions is effective as a surface cleaning technique for GaN. We have confirmed that (111) GaAs grows epitaxially on a (0001) GaN substrate. Pd/GaAs/GaN sandwich structures have been successfully fabricated with molecular beam epitaxy. We have confirmed the GaAs interlayer modifies the band diagram at the metal/GaN interface. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.370158
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  • 2
    Electronic Resource
    Electronic Resource
    Characterization of carrier-trapping phenomena in ultrathin chemical oxides using x-ray photoelectron spectroscopy time-dependent measurements (1999)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 74 (1999), S. 2011-2013 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report a technique to characterize carrier-trapping phenomena in SiO2 by measuring the Si 2p core-level energy of Si substrates covered with thin SiO2 layers as a function of x-ray irradiation time. It is found that the Si 2p peak energy, which corresponds to the band bending at the SiO2/Si interface, changes as the x-ray irradiation time increases. We attribute this to carrier-trapping phenomena in SiO2. By using this technique, it is found that the carrier-trapping phenomena differ remarkably among several chemical oxides. We also discuss the atomic structure of the traps that cause the trapping phenomena. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.123730
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  • 3
    Electronic Resource
    Electronic Resource
    Synthetic surfactants for protecting cultured fish against toxic phytoplankton (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 29 (1998), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Polyoxyethylene alkyl esters, which are surface-active agents, were chemically synthesized from fatty acids (C12-C18) on reaction with different moles of polyethylene oxides, and were tested for effectiveness against the toxic raphidophytes Chattonella marina (Subrahmanyan) Hara & Chihara and C. antiqua (Hada) Ono. The synthetic surfactants destroyed cultured cells from these two species. Although the synthetic surfactants also exhibited ichthyotoxicity, this was lowered by increasing the molarity of ethylene oxide (EO) in alkyl ester molecules. Young yellowtail, Seriola quinqueradiata Temminck & Schlegel, survived exposure to C. marina (5000-5500 cells mLT−1) or C. antiqua (3000-3500 cells mL−1) cultures with the addition of 4-5 p.p.m. oleyl ester EO 14, but died within an hour without the addition of this surfactant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2109.1998.00239.x
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  • 4
    Electronic Resource
    Electronic Resource
    Identification of T-cell epitope sequences on an important mite antigen (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 27 (1997), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background T-cell epitopes on Der 1 and Der 2 groups, the major mite allergens, have been intensively analysed, while those on the other important allergens remain to be elucidated. We have cloned four cDNAs coding for important mite allergens on the basis of frequency and capacity of IgE binding. Stimulatory action of glutathione S-transferase-fused Mag1 on lymphocytes from mite-allergic patients was relatively high among them.Objective To identify T-cell epitopes on Mag1, we studied the stimulating activity of truncated Mag1 proteins and synthetic peptides on proliferative response of lymphocytes from mite antigen-immunized mice and mite-sensitive patients.Methods Truncated Mag1 proteins were expressed as a fusion protein with β-galactosidase in Escherichia coli pop2136 carrying a variety of deleted Mag1 inserts. Murine T-cell epitope regions were estimated by the truncated antigen-induced lymphocyte proliferation assay. Overlapping peptides covering the whole sequence of the presumed T-cell epitope regions were synthesized to identify the epitope core. sequences using murine and human Mag1-specific T-cell lines.Results Amino acid range 56–70 on Mag1 molecule showed remarkable stimulatory action on murine T cells, while amino acid ranges 51–65 and 86–100 had potent stimulatory activity on human T cells.Conclusion These results suggest that Mag1 is a valuable antigen suitable for studies on T-cell responses and T-cell epitopes in mice and humans.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2222.1997.tb01261.x
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  • 5
    Electronic Resource
    Electronic Resource
    ADENOSINE 3′,5′-CYCLIC MONOPHOSPHATE IN NORMAL PORCINE MUSCLES (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 39 (1974), 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: As part of a study to define the etiology of pale, soft and exudative pork and porcine stress syndrome, some properties of cyclic AMP, a compound which mediates the action of epinephrine, were studied. Results show that cyclic AMP is uniformly distributed in hog skeletal muscles both within and between muscles and is unstable at 2° but stable at - 20°C and below. Under the conditions of the experiments, no simple relationship is obvious between rate of glycogen breakdown and concentration of cyclic AMP.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1974.tb17988.x
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  • 6
    Electronic Resource
    Electronic Resource
    LYSOSOMAL-TYPE ENZYMES IN BEEF LONGISSIMUS DORSI MUSCLE (1970)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 35 (1970), 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: Biochemical evidence for the presence of lysosomes in bovine longissimus dorsi muscle has been presented. Comparisons of enzymatic activities among lysosomal fractions from rat liver, bovine liver and bovine I. dorsi muscle indicate that there are specific as well as organic differences with respect to the activities of some of the enzymes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1970.tb12153.x
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  • 7
    Electronic Resource
    Electronic Resource
    Response of human gingival fibroblasts to prostaglandins (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of periodontal research 30 (1995), S. 0 
    Details
    ISSN: 1600-0765
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The effects of various prostaglandins (PGs) on the functions of human gingival fibroblasts (Gin-1 cells; ATCC CRL 1292) were examined by phase-contrast microscopy, cell-counting and radioautographic experiments. Tested PGs were PGA1, PGA2, PGB1, PGB2, PGD2, PGE1, PGE2, PGF1α, PGF2α, PGI2, 6-keto-PGF1α, 9α-11α-methanoepoxy-PGF2α, and thromboxane (TX) B2. PGA1, and PGD2 at 30 μM caused morphological deformation of Gin-1 cells. All the PGs tested at 30 μM suppressed the proliferation of Gin-1 cells in the logarithmic growth phase. Furthermore, all the PGs tested at 10 μM suppressed DNA synthesis, collagen synthesis, and noncollagenous protein synthesis in confluent Gin-1 cells, while exerting no effect on GAG synthesis. The concentrations of PGs used are beyond those found in healthy gingiva. However, in periodontitis the local concentrations of some PGs within the gingiva are expected to be extremely elevated beyond the physiological level. These results suggest that PGs may play an important role as a negative regulator in metabolism and some pathologic gingival conditions by suppressing the functions of gingival fibroblasts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0765.1995.tb01280.x
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  • 8
    Electronic Resource
    Electronic Resource
    A Research Note. LYSOSOMAL ENZYME ACTIVATION AND PROTEOLYSIS OF BOVINE MUSCLE (1971)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 36 (1971), 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
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1971.tb03322.x
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  • 9
    Electronic Resource
    Electronic Resource
    Humoral autoregulation of blood flow and blood pressure (1972)
    Springer
    Cellular and molecular life sciences 28 (1972), S. 528-530 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Vasoaktive Substanzen im arteriellen Blut können charakteristische Reaktionen des lokalen Strömungswiderstandes hervorrufen. Die einfachsten Beispiele dieser humoralen Autoregulation können durch intraarterielle Infusion von Acetylcholin (Autoregulation der Strömung) oder Noradrenalin (Autoregulation des Drucks) demonstriert werden. Es wird angenommen, dass der humoralen Autoregulation Bedeutung bei der normalen und pathologischen Kreislaufregulation zukommt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01931859
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  • 10
    Electronic Resource
    Electronic Resource
    Simple singularities and topology of symplectically filling 4-manifold (1999)
    Springer
    Commentarii mathematici Helvetici 74 (1999), S. 575-590 
    Details
    ISSN: 1420-8946
    Keywords: Key words. Fillable contact structure, symplectic filling, simple singularity, simply elliptic singularity, the Seiberg-Witten monopole equations.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract. Topological restrictions of symplectically filling 4-manifolds of links around simple singularities are studied by using the Seiberg-Witten monopole equations. In particular, the intersection form of minimal symplectically filling 4-manifolds of the singularity of type E 8 is determined. Moreover, for the case of simply elliptic singularities, similar restrictions are obtained. In the proof, a vanishing theorem of the Seiberg-Witten invariant is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s000140050106
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