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
  • 1990-1994  (6)
  • 1945-1949
  • 1935-1939
  • 1994  (6)
  • 1
    Electronic Resource
    Electronic Resource
    Spatially localized energy shifts in the photoemission spectroscopy of insulators (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 76 (1994), S. 3710-3713 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Core-level photoemission peaks taken on several insulators with spatial resolution of 30–300 μm rigidly shift in energy from place to place, most likely because of local charging effects. Such phenomena can affect the linewidth and the general lineshape of conventional, spatially integrated spectra even when a flood gun is used, which is one of the standard remedies against charging. This may require a critical revision of photoemission linewidths and lineshapes for many past experiments on insulators.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.357440
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Electronic structure of anatase TiO2 oxide (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 2945-2951 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Photoemission spectromicroscopy was used to investigate the electronic structure of TiO2 anatase single crystals and polycrystalline thin films. The stoichiometry and the degree of oxidation of as-grown crystals, as-deposited films, as well as of thermally annealed samples in different atmospheres, were analyzed, based on the Ti 2p and O 1s core levels, with an energy resolution of 0.4 eV. The experimental density of states (DOS) was found to be in agreement with the theoretical DOS reported in the literature for anatase crystals, and shows some characteristics similar to the experimental DOS reported for rutile crystals. In reduced samples, the experimental DOS is characterized by intense emission in the region of O 2p bonding orbitals, and does not exhibit an appreciable density of states in the band gap. As-grown crystals exhibit small band gap emission (a few percent of the valence band VB signal) at about 0.8 eV, which is attributed to Ti3+ (3d) defect states. Annealing the crystals at high temperatures in O2 or subsequent thermal reduction in an Ar–H2 mixture (95%–5%) produces nearly stoichiometric surfaces with smaller or undetectable density of Ti3+ states. In addition, some redistribution of the spectral weight is observed in the VB spectra.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.356190
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    High mobility n-type charge carriers in large single crystals of anatase (TiO2) (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 633-635 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Resistivity, thermopower, and Hall-effect measurements on large single crystals of the anatase form of TiO2 all indicate high mobility n-type carriers that are produced by thermal excitation from a density of ∼1018 cm−3 putatively present shallow donor states. The decrease of the mobility with increasing temperature is consistent with the scattering of carriers by the optical phonons of TiO2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.355801
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Percutaneous transhepatic embolization of a spontaneous mesocaval shunt after liver transplantation (1994)
    Springer
    European radiology 4 (1994), S. 479-482 
    Details
    ISSN: 1432-1084
    Keywords: Liver transplantation ; Mesocaval shunt ; Catheter embolization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A preoperatively undetected spontaneous mesocaval shunt lead to impairment of organ function after liver transplantation. Ischemia of the graft due to partial hepatofugal portal flow was demonstrated by color-flow Doppler sonography and angiography. The successful catheter embolization of the mesocaval shunt via a transhepatic approach is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00212827
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Percutaneous transjugular intrahepatic stent shunt for treatment of intractable varicose bleeding in paediatric patients (1994)
    Springer
    European journal of pediatrics 153 (1994), S. 721-725 
    Details
    ISSN: 1432-1076
    Keywords: Liver cirrhosis ; Varicose bleeding ; Transjugular intrahepatic portosystemic stent shunt ; Children ; Orthotopic liver transplantation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Two 10-year and 11-year-old children with oesophageal and gastric varicose haemorrhage unresponsive to medical treatment and repeated endoscopic sclerotherapy underwent percutaneous transjugular intrahepatic portosystemic shunting (TIPSS). A newly developed introducing system was used. The procedure was performed to avoid the increased risk of emergency liver transplantation in children with hepatic failure. Immediately after the procedure bleeding stopped and the patient's condition improved. Ascites disappeared and liver function improved. The stent shunt was shown to be patent by angiography and Doppler ultrasound for a follow up period of more than 1 year. Conclusion TIPSS may be of benefit in children with severe portal hypertension. It allows control of intractable bleeding, and stabilizes the patients preparing them for subsequent elective orthotopic liver transplantation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01954487
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Electrodes for REMPI spectroscopy in static gases and calculation of REMPI intensities: Application to molecular oxygen (1994)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 25 (1994), S. 457-462 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Resonance-enhanced multiphoton ionization (REMPI) of 16O2X3∑g - (ν = 0) through (3sσg)d 1Πg, (ν = 0) by using (2 + 1) one-colour photons is reported. This REMPI process, already observed and analysed by other authors at low pressure and low rotational temperature with mass spectrometry detection, is used to test our first detector of ionizations. Experimental difficulties have led to the design of an original arrangement of electrodes to collect electrons at room temperature and 1 Torr pressure of static molecular oxygen. A calculated spectrum is compared with the observed REMPI spectrum. The calculation uses the polarizability tensor and takes into account the competition between ionization and predissociation of the Rydberg state.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250250705
    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...