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
  • 1990-1994  (5)
  • 1992  (3)
  • 1991  (2)
  • 1
    Electronic Resource
    Electronic Resource
    In situ patterning and overgrowth for the formation of buried GaAs/AlGaAs single quantum-well structures (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 60 (1992), S. 365-367 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Buried GaAs/AlGaAs single quantum-well structures have been fabricated for the first time by in situ electron beam (EB) lithography. The process includes the molecular beam epitaxy of a GaAs/AlGaAs single quantum well, electron-beam direct writing, Cl2 gas etching, and overgrowth of an AlGaAs layer. A thin GaAs oxide layer was used as the etching mask, which was selectively formed on a clean GaAs surface by EB irradiation under an O2 ambient. Subsequent Cl2 gas etching resulted in the formation of isolated quantum wells. Prior to the overgrowth, thermal cleaning with atomic hydrogen was employed for removing the oxide mask. The cathodoluminescence image of the buried quantum well demonstrates the high quality of the resultant structure formed by in situ EB lithography.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.106658
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Pharmacology of Protein Kinase Inhibitors (1992)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Pharmacology 32 (1992), S. 377-397 
    Details
    ISSN: 0362-1642
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Medicine , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.pa.32.040192.002113
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Immunohistochemical analysis of spinal intradural xanthomatosis developed in a patient with phytosterolemia (1992)
    Springer
    Acta neuropathologica 83 (1992), S. 554-558 
    Details
    ISSN: 1432-0533
    Keywords: Phytosterolemia ; Intradural xanthomatosis ; Denticulate ligaments ; Macrophage ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Multiple intradural xanthomatous tumors developed in 48-year-old female with familial phytosterolemia. These tumors were restricted to the spinal denticulate ligaments. Histological and immunohistocheimical findings were fundamentally similar to those of tendinous xanthomas. The major cellular component of these tumors were identified as of mono-histiocytic origin because they possessed myeloid histiocytic antigen (Mac 387), CD11c and lysozyme but not CD15. Sitosterols, campesterols and cholestanols were recovered from the extract of the tumors and the lesions were confirmed to be phytosterolemic xanthomas. Schwann cells stained with anti-S100 protein were confined to the perivascular small nerve bundles and did not show xanthomatous change. Although immunohistochemical preparation of epithelial membrane antigen and desmoplakin I+II revealed the presence of non-neoplastic meningothelial cells in the superficial portion of the tumors, they were too few to play a significant role in the development of these xanthomas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00310036
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    The effects of HA1077 on the cerebral circulation after subarachnoid haemorrhage in dogs (1991)
    Springer
    Acta neurochirurgica 110 (1991), S. 185-188 
    Details
    ISSN: 0942-0940
    Keywords: HA1077 ; cerebral vasospasm ; subarachnoid haemorrhage ; cerebral blood flow ; calcium antagonist
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We examined the effects of the recently developed calcium antagonist HA1077 on cerebral haemodynamics during the chronic stage of the two-haemorrhage canine model system of vasospasm. Regional cerebral blood flow (rCBF), regional cerebral blood velocity and regional cerebral blood volume in the canine parietal cortex were measured by Laser-doppler flowmeter. On the 7th day after the initial injection of autogenous blood, subarachnoid haemorrhage (SAH) produced a significant decrease in rCBF (59% of control, p〈0.05) and Hood velocity (48% of control, p〈0.05), with no remarkable change in blood volume (108% of control). Bolus intravenous administration of HA1077 (0.1–0.3 mg/kg) dose-dependently increased the rCBF and blood velocity, without significantly changing the blood volume on Day 7 after SAH. HA1077 improves haemodynamic function manifested by an increase in rCBF and velocity in this SAH model, and may be suitable for the treatment of vasospasm in patients with SAH.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01400689
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Estimation of burnup in the Oklo natural nuclear reactor from ruthenium isotopic composition (1991)
    Springer
    Journal of radioanalytical and nuclear chemistry 155 (1991), S. 107-113 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Estimation of burnup in the Oklo natural reactor was based on Ru isotopic abundances determined by thermal ionization mass spectrometry. Nearly all Ru in the samples is fissiogenic, and burnup values calculated from101Ru,102Ru and104Ru isotope abundances are in good agreement with each other. The conversion factor of238U to235U was also determined using Ru isotope abundances.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02165064
    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...