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  • 1
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 77 (2000), S. 181-183 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The effect of bulk boron incorporation on the second-harmonic generation (SHG) spectrum of Si(001) films grown epitaxially by chemical vapor deposition is studied as a function of doping level and temperature. At room temperature, boron doping (NA∼1018 cm−3) strongly enhances and blueshifts the E1 resonance of the second-harmonic generation spectra to 3.4 eV. Surface hydrogen termination reverses this effect. The observed doping and temperature dependence are modeled as electric-field-induced SHG in the bulk depletion region. The results suggest applications of SHG as an in situ, noninvasive probe of electrically active dopants. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    350 Main Street, Malden, MA 02148, USA. : Blackwell Futura Publishing, Inc.
    ISSN: 1540-8183
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1474-8673
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Chemistry and Pharmacology , Medicine
    Notes: 1 The present study was designed to investigate the secretion of catecholamines (CA) evoked by stimulation of cholinergic receptors and membrane depolarization from the isolated perfused adrenal gland of spontaneously hypertensive rats (SHR) and normotensive Wistar–Kyoto rats (WKYR) at adult age. 2 The wet weight of adrenal gland in SHR was greater than that in WKYR. The CA releasing responses evoked by acetylcholine (5.32 × 10−3 m), and high potassium (5.6 × 10−2 m), a membrane depolarizer, were significantly lower in WKYR than in SHR. 3 The secretory responses of CA evoked by DMPP (10−4 m for 2 min), a selective agonist of neuronal nicotinic receptors, and McN-A-343 (10−4 m for 2 min), a selective agonist of neuronal muscarinic receptors, were also significantly lower in WKYR than in SHR. 4 The CA release evoked by Bay-K-8644 (10−5 m), a dihydropyridine-sensitive Ca2+ channel activator, and cyclopiazonic acid (10−5 m), a selective inhibitor of Ca2+-ATPase in the endoplasmic reticulum, were also significantly greater in SHR than WKYR. 5 Taken together, these experimental results demonstrate that the CA secretion evoked by stimulation of cholinergic (nicotinic and muscarinic) receptors as well as membrane depolarization is enhanced more greatly in the perfused adrenal glands of SHR than in those of WKYR. It is suggested that the augmented CA release in SHR compared with WKYR was involved in essential hypertensive pathogenesis.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Hamsters are popular household pets and anaphylaxis after their bites have described. However, the putative allergen has not been identified.Objective This study was conducted to identify the allergen causing dwarf hamster (Phodopus sungoris) bite-induced anaphylaxis.Methods Two children with hamster bite-induced anaphylaxis were enrolled. They both had negative results to skin testing and specific IgE to hamster epithelium. However, they were both allergic to Dermatophagoides pteronyssinus (Der p). Identification of the putative IgE-binding allergens from the hamster saliva was performed using immunoblot analysis.Results A specific IgE-binding component at 21 kD in the hamster saliva was identified. ELISA inhibition tests showed partial inhibition with Der p.Conclusions The putative allergen from the hamster saliva causing dwarf hamster-induced anaphylaxis was identified. Possible cross-reactivity with Der p was demonstrated. Further studies will be needed to identify the exact nature and function of this allergen.
    Type of Medium: Electronic Resource
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