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  • Life Sciences (general)  (2)
  • 123I-low-density lipoprotein  (1)
  • 81.60.Bn  (1)
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  • 1
    Digitale Medien
    Digitale Medien
    Laser nitriding of iron: Nitrogen profiles and phases (1995)
    Springer
    Applied physics 61 (1995), S. 1-5 
    Details
    ISSN: 1432-0630
    Schlagwort(e): 61.80.Ba ; 52.75.-d ; 81.60.Bn ; 76.80
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Notizen: Abstract Armco iron samples were surface nitrided by irradiating them with pulses of an excimer laser in a nitrogen atmosphere. The resulting nitrogen depth profiles measured by Resonant Nuclear Reaction Analysis (RNRA) and the phase formation determined by Conversion Electron Mössbauer Spectroscopy (CEMS) were investigated as functions of energy density and the number of pulses. The nitrogen content of the samples was found to be independent of the number of pulses in a layer of 50 nm from the surface and to increase in depths exceeding 150 nm. The phase composition did not change with the number of pulses. The nitrogen content can be related to an enhanced nitrogen solubility based on high temperatures and high pressures due to the laser-induced plasma above the sample. With increasing pulse energy density, the phase composition changes towards phases with higher nitrogen contents. Nitrogen diffusion seems to be the limiting factor for the nitriding process.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01538202
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Imaging of human atherosclerotic lesions using 123I-low-density lipoprotein (1986)
    Springer
    European journal of nuclear medicine 12 (1986), S. 291-292 
    Details
    ISSN: 1619-7089
    Schlagwort(e): Low-density lipoproteins ; Atherogenesis ; Imaging lesions ; 123I-low-density lipoprotein
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract In patients suffering from clinically manifest atherosclerosis autologous LDL-labelling has been done using 123I. This technique allows localization of areas with an increased LDL entry as well as a monitoring of kinetics. Normally, no tracer uptake can be seen in the vascular system. Positive camera images, however, can be obtained in pathological areas as early as 60 min after LDL-reinjection. Experimental data and morphological control reveal a very good correlation to the gamma-camera findings. The technique seems to be very promising for diagnosis in patients suffering from atherosclerosis and hyperlipoproteinemia.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00251990
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Einfluß von Lipidfraktionen mikrobieller Herkunft auf die Wasserausnutzung in der biologissechen Stoffproduktion von Kulturpflanzen (1987)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 7 (1987), S. 201-206 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Effects of exogenous applied lipids being of microbial origin on the water use efficiency (WUE) and the biomass production have been studied in pot and field experiments using crop plants.Lipid mixtures extracted from the cells of Candida maltosa EH 15 increased the WUE (9…16%) and the grain yield (÷x = 10%) of the wheat and barley plants under dry conditions. The fatty acid fraction separated from the lipid mixtures also improved the WUE especially under stress (20…100%) and the biomass production. The phosphatide fraction emulsified with sulfonate containing solvents was not physiologically active.
    Zusätzliches Material: 4 Tab.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370070223
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    A new procedure of a two-step cultivation of microorganisms. Part II. Application to the procedure of SCP-production on the basis of sucrose (1990)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 10 (1990), S. 311-316 
    Details
    ISSN: 0138-4988
    Schlagwort(e): Life Sciences ; Life Sciences (general)
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The two-step cultivation of microoganisms described in part I of this series will be explained by referring to its application to the production of SCP on the basis of sucrose/molasses as carbon sources. The inactivation of the yeast Candida utilis is carried out thermally, and the specific death rate was determined to be between 119 × 10-4 s-1, and 324 × 10-4 s-1, respectively. With this new procedure the apparent productivity could be increased by 96.6%, the yield coefficient of molasses increased by 5.8% and of sucrose by 12.9%. The crude protein content of the product in the case of sucrose rose by 104%. The variability of process design is demonstrated.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/abio.370100320
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