Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Characterization of threading dislocations in GaN epitaxial layers (2000)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 76 (2000), S. 3421-3423 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We investigated Si-doped GaN epitaxial layers on a (0001)-sapphire substrate using a HCl vapor-phase etching technique, scanning electron microscopy, atomic force microscopy, and transmission electron microscopy. Three kinds of distinctive etch pits correspond to three different types of threading dislocations, edge, mixed, and screw types. Photoluminescence intensity increases with the decrease in the number of etch pits corresponding to mixed and screw dislocations. The number of etch pits corresponding to edge dislocations, however, did not change. We concluded, therefore, that threading dislocations having a screw-component burgers vector act as strong nonradiative centers in GaN epitaxial layers, whereas edge dislocations, which are the majority, do not act as nonradiative centers. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.126666
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Regulation by intracellular glutathione of TNF-α-induced p38 MAP kinase activation and RANTES production by human pulmonary vascular endothelial cells (2000)
    Copenhagen : Munksgaard International Publishers
    Allergy 55 (2000), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Conclusions: These results indicated that TNF-α-induced p38 MAP kinase activation and p38 MAP kinase-mediated RANTES production by human pulmonary vascular endothelial cells are inversely regulated by intracellular GSH levels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1034/j.1398-9995.2000.00455.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Chemotherapy-induced acral erythema: report of a case and immunohistochemical findings (2000)
    Oxford, UK : Blackwell Science Ltd
    Clinical and experimental dermatology 25 (2000), S. 0 
    Details
    ISSN: 1365-2230
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Chemotherapy-induced acral erythema (CAE) is an uncommon and distinct reaction seen in patients receiving high-dose chemotherapy. The exact pathogenic mechanisms of this disorder are still unknown. We report a 27-year-old woman who presented with red, swollen and painful macules on both palms, clinically consistent with this disease. Histological examination demonstrated vacuolar degeneration of the basal cell layer and spongiotic blisters in the epidermis, especially in the atrophied eccrine ducts and papillary oedema with mild perivascular infiltration of mononuclear and hypersegmented neutrophils. Immunohistochemistry showed that the infiltrating mononuclear cells were CD3–CD16+CD56+ leucocyte function antigen-1+, possibly natural killer cells. The eccrine ducts expressed HLA-DR and intracellular adhesion molecule-1 (ICAM-1). Our findings suggest that cell-to-cell interaction between NK cells and keratinocytes in the eccrine apparatus may induce CAE and may be involved in the pathogenesis of the skin reaction in our patient and possibly in this disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2230.2000.00670.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    A major metabolite of aceclofenac, 4′-hydroxy aceclofenac, suppresses the production of interstitial pro-collagenase/proMMP-1 and pro-stromelysin-1/proMMP-3 by human rheumatoid synovial cells (2000)
    Springer
    Inflammation research 49 (2000), S. 133-138 
    Details
    ISSN: 1420-908X
    Keywords: Key words: Aceclofenac — 4′-Hydroxy aceclofenac — Pro-matrix metalloproteinase 1 — Pro-matrix metalloproteinase 3 — Rheumatoid synovial cell
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Objective and Design: We examined the effects of aceclofenac and its metabolites on the production of pro-collagenase-1/pro-matrix metalloproteinase-1 (proMMP-1), pro-gelatinase A/proMMP-2, pro-stromelysin-1/proMMP-3 and tissue inhibitor of metalloproteinases-1 (TIMP-1) by rheumatoid synovial cells.¶Materials: Synovial cells were obtained from patients with rheumatoid arthritis.¶Treatment: Cultures of confluent cells were treated with interleukin-1β (IL-1β)(1 ng/ml) and/or test drugs (0.3-30 μM) for 48 h.¶Methods: Production of proMMPs and TIMP-1 was monitored by Western blotting or gelatin zymography. Prostaglandin E2 (PGE2) was measured by an enzyme immunoassay.¶Results: 4′-Hydroxy aceclofenac, a major metabolite of aceclofenac, down-regulated both basal and IL-1β-induced production of proMMP-1 and proMMP-3 at a concentration sufficient to suppress PGE2 production without modulating proMMP-2 or TIMP-1, whereas aceclofenac itself had no marked effect on the production of proMMPs.¶Conclusions: Down-regulation of proMMP-1 and proMMP-3 production by 4′-hydroxy aceclofenac may contribute to the therapeutic effect of aceclofenac on rheumatoid arthritis and osteoarthritis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s000110050571
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Structural, Thermal and Electrical Properties of Ce-Doped SrMnO3 (2000)
    Springer
    Journal of electroceramics 4 (2000), S. 225-231 
    Details
    ISSN: 1573-8663
    Keywords: Ce-doped SrMnO3 ; electrical conductivity ; perovskite ; SOFC cathode ; Seebeck coefficient
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The Sr1-xCexMnO1-α system (0≤ x ≤ 0.5) was investigated with respect to its structural, thermal and electrical properties. Although un-doped SrMnO3 has the perovskite structure above 1400°C, the structure is unstable at room temperature. However, partial substitution of Ce for Sr in SrMnO3 stabilizes the perovskite structure down to room temperature. Single phase perovskite is obtained for 0.1≤ x ≤ 0.3 in Sr1-xCexMnO1-α, and it remains stable even following heat treatment at 800°C for 100 h. The dependence of the electrical conductivity on temperature was measured from room temperature to 1000°C in air. Ce doping dramatically enhanced the electrical conductivity of SrMnO3. Sr0.7Ce0.3MnO1-α exhibits a higher conductivity (290 S · cm-1 at 1000°C) than that of La0.8Sr0.2MnO3 (LSM, about 175 S · cm-1) and remains n-type over the whole range of temperature examined. The thermal expansion coefficients in the system were nearly constant with values ranging between 1.24 × 10-6 and 1.01 × 10-6 cm/cm · K for temperatures of 50°C to 1000°C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009936515152
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Neurotrophic effects of FPF-1070 (Cerebrolysin®) on cultured neurons from chicken embryo dorsal root ganglia, ciliary ganglia, and sympathetic trunks (2000)
    Springer
    Journal of neural transmission 107 (2000), S. 1253-1262 
    Details
    ISSN: 1435-1463
    Keywords: Keywords: Cerebrolysin®, neurotrophic factor, culture, chicken, neuron, FPF-1070.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary. We examined the effect of FPF-1070 (Cerebrolysin®) on neurite outgrowth in explant cultures of dorsal root ganglia (DRG), sympathetic trunks (ST), and ciliary ganglia (CG) from 10- to 11-day chicken embryos. FPF-1070 significantly promoted neurite outgrowth in DRG and ST neurons at all concentrations examined, in comparison with phosphate buffered saline-treated negative controls; however, this effect on neurite outgrowth was not as significant as that observed for nerve growth factor-treated positive controls on DRG and ST neurons. Additionally, FPF-1070 exhibited an inverted U relationship between concentration and effectiveness in DRG and ST neurons. In contrast, FPF-1070 did not affect neurite outgrowth in CG neurons although ciliary neurotrophic factor-treated positive controls showed striking neurite outgrowth. Our results demonstrate that FPF-1070 has different neurotrophic effects depending on the subpopulation of neurons. This study clarifies a role for neurotrophic activity in the mechanism of action of FPF-1070.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s007020070015
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...