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  • 1
    Digitale Medien
    Digitale Medien
    Postinfarction Left Ventricular Free Wall Rupture: Original Management and Surgical Technique (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of cardiac surgery 6 (1991), S. 0 
    Details
    ISSN: 1540-8191
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Abstract A case of postinfarction left ventricular free wall rupture is successfully treated. Prompt diagnosis was provided by echocardiography and an emergency operation was carried out. Following sternotomy, hemodynamic stabilization was obtained by gradually evacuating blood from the pericardium, while the femoral vessels were cannulated and the extracorporeal circulation was established. An autologous glutaraldehyde stiffened pericardial patch was sealed over the infarcted area using fibrin glue and fixed with a running suture on the surrounding healthy myocardium.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1540-8191.1991.tb00336.x
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  • 2
    Digitale Medien
    Digitale Medien
    Detection and size determination of Ag nanoclusters in ion-exchanged soda-lime glasses by waveguided Raman spectroscopy (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 2055-2059 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Waveguided Raman measurements have been performed in order to detect the presence of Ag nanoclusters in soda-lime glass waveguides obtained by ion exchange. By subtracting a strong broadband luminescence and the Raman contribution of the glass matrix, a low frequency Raman peak is resolved. The peak is ascribed to surface acoustic vibrations of silver clusters. The involved modes are the quadrupolar spheroidal ones. The size distribution of the Ag clusters is deduced from the energy and the linewidth of the peak. Silver particles have small dimensions with an upper size limit of about 1.5 nm. This result is in good agreement with recent transmission electron microscopy measurements. © 1996 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.361060
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  • 3
    Digitale Medien
    Digitale Medien
    Flux noise from superconducting YBa2Cu3O7−x flux transformers (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 58 (1991), S. 1106-1108 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Using a dc superconducting quantum interference device (SQUID) at 4.2 K, we have measured the magnitude and temperature dependence of the flux noise generated by superconducting flux transformers made from YBa2Cu3O7−x. If the transformer loop is opened, the observed noise decreases by a factor of 10, demonstrating that moving vortices generate noise primarily by altering the screening current, rather than by coupling their magnetic flux directly into the SQUID. Model calculations are given for the various noise contributions, and shown to be reasonable predictions of the observed effects.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.104386
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  • 4
    Digitale Medien
    Digitale Medien
    Magnetic flux noise in thin-film rings of YBa2Cu3O7−δ (1988)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 53 (1988), S. 695-697 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: The low-frequency magnetic flux noise in thin-film rings of YBa2Cu3O7−δ (YBCO) is measured over the temperature range 1.3–125 K by means of a dc superconducting quantum interference device (SQUID) maintained at liquid-helium temperatures. Below the transition temperature Tc of the YBCO, the spectral density of the noise scales as 1/f, where f is the frequency, and generally increases with increasing temperature. The magnitude of the noise depends strongly on the microstructure of the film, and is lowest for a sample which is predominantly oriented with its c axis perpendicular to the substrate. These results imply that SQUID's and flux transformers of YBCO must be fabricated from highly oriented films to produce good resolution at low frequencies.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.100643
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  • 5
    Digitale Medien
    Digitale Medien
    Superconducting thin-film flux transformers of YBa2Cu3O7−x (1990)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 57 (1990), S. 1930-1932 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Using a three-layer YBa2Cu3O7−x-SrTiO3-YBa2Cu3O7−x in situ laser deposition process, we have constructed thin-film flux transformers which have pickup loops 10 mm on a side and input coils with ten turns. Each layer was patterned with a shadow mask or photolithography. The flux transformers were inductively coupled to a dc superconducting quantum interference device (SQUID) at 4.2 K to determine their transition temperature, and the temperature dependence of their critical current and coupling efficiency. The best flux transformer had a transition temperature of 77 K, and enhanced the magnetic field response of the SQUID by a factor of 9.5.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.104015
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  • 6
    Digitale Medien
    Digitale Medien
    Waveguide luminescence and Raman spectroscopy: Characterization of an inhomogeneous film at different depths (1999)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 75 (1999), S. 1529-1531 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: In graded-index planar optical waveguides, different guided modes propagate in layers with different thickness. By comparison of spectra (Raman, luminescence) taken by waveguide excitation in different modes, it is possible to characterize the guide at different depths. The method has been applied to waveguides obtained by ion exchange of silver in a soda-lime substrate. Luminescence from silver ions and Raman scattering from the optical vibrations of the glass and from the acoustic vibrations of silver nanoclusters depend on the silver concentration, providing different spectra for excitation in different modes of the guide. © 1999 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.124745
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  • 7
    Digitale Medien
    Digitale Medien
    Highly ordered films of quaterthiophene grown by seeded supersonic beams (2000)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 76 (2000), S. 1845-1847 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Seeded supersonic beams of oligothiophenes have been developed and used to grow very high quality films on CaF2 and SiO2. Optical characterizations show features previously observed only on single crystals and very thin films. In particular, the vibronic progression of the 0–0 transition is well resolved at 10 K. Highly supersonic beams give best results. High quality films are produced over a range of thicknesses ≥500 nm. The correlation between properties of the films and beam parameters are discussed. The energy state of oligomers is envisaged to play a key role in the growth. © 2000 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.126187
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  • 8
    Digitale Medien
    Digitale Medien
    RESTRICTABLE DNA FROM SLOUGHED CETACEAN SKIN; ITS POTENTIAL FOR USE IN POPULATION ANALYSIS (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Marine mammal science 8 (1992), S. 0 
    Details
    ISSN: 1748-7692
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie
    Notizen: Abstract: Several species of cetaceans naturally slough visible quantities of skin. We have investigated the prospect of using this material as a viable alternative to the use of biopsy darts for the collection of samples for molecular analysis. Pieces of skin were collected from free-ranging individuals of three different species—the humpback (Megaptera novaeangliae), sperm (Physeter macrocephalus) and right whales (Eubalaena glacialis). DNA was extracted from 11 pieces of sloughed skin and DNA “fingerprint” profiles prepared. All samples contained DNA of both sufficient quality and quantity for genetic analysis. The applicability of this approach is discussed generally in relation to answering problems about the population structure and breeding systems of cetaceans.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1748-7692.1992.tb00409.x
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  • 9
    Digitale Medien
    Digitale Medien
    Escherichia Coli Single-Stranded DNA-Binding Protein: Multiple DNA-Binding Modes and Cooperativities (1994)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biochemistry 63 (1994), S. 527-570 
    Details
    ISSN: 0066-4154
    Quelle: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Thema: Chemie und Pharmazie , Biologie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1146/annurev.bi.63.070194.002523
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  • 10
    Digitale Medien
    Digitale Medien
    The amount of white pulp in the spleen; a morphometrical study done in methacrylate-embedded splenectomy specimens (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 7 (1983), S. 0 
    Details
    ISSN: 1365-2559
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: This report deals with a morphometrical study on 92 surgically removed human spleens, to investigate the composition of spleens which are considered to be normal, i.e. spleens which had ruptured in traffic accidents or which had been incidentally removed during abdominal operations. A comparison was made with 16 spleens with hypersequestration of platelets and to 11 with hyper-sequestration of erythrocytes. Methyl-methacrylate embedding was used because of the superiority of this technique over conventional paraffin embedding. Significant differences were found between both ‘normal’ groups as to the absolute and relative amount of white pulp as well as the perifollicular red pulp zone. Based also on the few morphometrical reported studies in the literature, spleens removed during abdominal surgery form the best control group. Traumatic rupture of the spleen in traffic accidents might specifically occur in spleens which already contained a stimulated lymphatic compartment. A probably non-specific increase of white pulp was found in splenomegaly of varied aetiology. An expected influence of age on weight and composition of the spleen was not found in our study. The spleen changes in weight and composition only up to 5 years of age. Significant involution at older age was not found in ours nor in other reported larger series.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2559.1983.tb02289.x
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