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
Filter
  • 2000-2004  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Use of x-ray reflectivity techniques to determine structural parameters of some silicide structures for microelectronics applications (2000)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 76 (2000), S. 52-54 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: X-ray reflectivity measurements have been carried out on TiN/Ti/Si- and WSix/Si-deposited and -annealed structures. The results show that for the as-deposited samples there are periodic oscillations due to a well-defined interface roughness, while for the annealed samples the disappearance of the oscillations due to increase in surface and interface roughness of the formed silicide layers is observed. We demonstrate that the analysis of x-ray reflectivity measurements collected both in the specular and in the off-specular way, even for the samples with very high surface and interface roughness, allows the determination of structural parameters of the films and interfaces. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.125653
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Litterfall dynamics and nitrogen use efficiency in two evergreen temperate rainforests of southern Chile (2003)
    Oxford, UK : Blackwell Science Pty
    Austral ecology 28 (2003), S. 0 
    Details
    ISSN: 1442-9993
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract  In unpolluted regions, where inorganic nitrogen (N) inputs from the atmosphere are minimal, such as remote locations in southern South America, litterfall dynamics and N use efficiency of tree species should be coupled to the internal N cycle of forest ecosystems. This hypothesis was examined in two evergreen temperate forests in southern Chile (42°30′S), a mixed broad-leaved forest (MBF) and a conifer forest (CF). Although these forests grow under the same climate and on the same parental material, they differ greatly in floristic structure and canopy dynamics (slower in the CF). In both forests, biomass, N flux, and C/N ratios of fine litterfall were measured monthly from May 1995 to March 1999. There was a continuous litter flux over the annual cycle in both forests, with a peak during autumn in the CF. In the MBF, litterfall decreased during spring. In both forests, the C/N ratios of litterfall varied over the annual cycle with a maximum in autumn. Annual litterfall biomass flux (Mean ± SD = 3.3 ± 0.5 vs 2.0 ± 0.5 Mg ha−1) and N return (34.8 ± 16 vs 9.1 ± 2.8 kg N ha−1) were higher in the MBF than in the CF. At the ecosystem level, litterfall C/N was lower in the MBF (mean C/N ratio = 60.1 ± 15, n = 3 years) suggesting decreased N use efficiency compared with CF (mean C/N ratio = 103 ± 19.6, n = 3 years). At the species level, subordinated (subcanopy) tree species in the MBF had significantly lower C/N ratios (〈50) of litterfall than the dominant trees in the CF and MBF (〉85). The litterfall C/N ratio and percentage N retranslocated were significantly correlated and were lower in the MBF. The higher net N mineralization in soils of the MBF is related to a lower N use efficiency at the ecosystem and species level.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1442-9993.2003.01315.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
    Nefazodone Treatment of Adolescent Depression: An Open-Label Study of Response and Biochemistry (2000)
    Springer
    Annals of clinical psychiatry 12 (2000), S. 97-100 
    Details
    ISSN: 1573-3238
    Keywords: depression ; adolescent ; nefazodone ; antidepressants ; serotonin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: The purpose of this study was to find whether nefazodone, effective in adult depression, might be similarly improve symptoms of adolescent depression. Secondary purpose was to relate platelet serotonin content to response, and to find if nefazodone's effect on platelet content was similar to that of the SSRIs. Method: 10 adolescents meeting DSMIV criteria for major depression received up to 400 mg of nefazodone for an eight week period. Response was assessed at baseline, 1, 2, 4, and 8 weeks by BDI and HDRS; platelet serotonin (5HT) content was obtained at baseline and final visit (for two dropouts, this was done at last visit, i.e., week 4). Results: In LOCF analysis, significant improvement was found in both HDRS (20.9 to 8.9, p = .01) and BDI (24.6 to 10.2, p = .01). Eight of nine patients with available data showed increases in platelet 5HT content (.02). In seven patients of eight completers with available data, there was a nonsignificant trend for patients with platelet 5HT baseline greater than 30 ng/108 platelets to show a greater change in HDRS than those with a baseline of less than 30 ng/108 platelets (p = .07). Conclusions: Further double-blind study of nefazodone in adolescent depression is indicated; nefazodone appears to increase platelet 5HT content.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009024214337
    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...