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  • 1
    Digitale Medien
    Digitale Medien
    Formation of zearalenone on wheat contaminated with Fusarium graminearum under controlled conditions (1997)
    Springer
    Zeitschrift für Lebensmittel-Untersuchung und -Forschung 204 (1997), S. 39-42 
    Details
    ISSN: 1431-4630
    Schlagwort(e): Key words Zearalenone ; Wheat ; Fusarium graminearum ; Cereal contamination
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Abstract  The contamination of cereals with field-growing Fusarium species can be a health hazard since Fusarium are known for their ability to produce mycotoxins like zearalenone (ZON) and deoxynivalenol (DON). For this study the formation of ZON was investigated under controlled growth conditions. Ergosterol, as an indicator of fungal growth, and ZON were analysed by HPLC with UV and fluorescence detection respectively. It is shown that ZON is synthesised in the late growth phase of the fungi, which is typical for secondary metabolites. Milling of contaminated wheat shows a reduced content of ZON in fractions of low ash content. Consequently the concentration of ZON in bran, which has a high ash content, was much higher.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002170050033
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  • 2
    Digitale Medien
    Digitale Medien
    Mathematical models for mixing in deep-jet bioreactors: Calculation of parameters (1991)
    Springer
    Bioprocess and biosystems engineering 7 (1991), S. 177-182 
    Details
    ISSN: 1432-0797
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Abstract The macroscopic mathematical model based on compartments with ideal mixing zones and tanks-in series was evaluated. Based on the experimental data obtained in a 300 dm3 pilot reactor and the dependence of mixing time on the volume of liquid phase, we have found mathematical relations between the ratio of vessel diameter to liquid level, adjustable parameters of model and the mixing time.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00387414
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  • 3
    Digitale Medien
    Digitale Medien
    Mathematical models for mixing in deep jet bioreactors: analysis (1991)
    Springer
    Bioprocess and biosystems engineering 7 (1991), S. 171-176 
    Details
    ISSN: 1432-0797
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Abstract A mathematical model for single and multi step deep-jet bioreactors is presented. A stagewise approach based on macroscopic mechanistic model which divides the reactor into compartments with good quality of mixing and plug flow regions (macromixer), was used. For the mathematical representation of this model a system of differential equations, describing the concentration of tracer in structural elements based on mass balance, and the Runge-Kutta-Fehlberg numerical method of integration, was applied. The mixing time in a 300 dm3 tank was determined by conductivity method with NaCl as tracer.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00387413
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  • 4
    Digitale Medien
    Digitale Medien
    Time-dependent changes of insufficiency fractures of the sacrum: intraosseous vacuum phenomenon as an early sign (1996)
    Springer
    European radiology 6 (1996), S. 655-657 
    Details
    ISSN: 1432-1084
    Schlagwort(e): Computer tomography ; Insufficiency fracture ; Sacral bone ; Vacuum phenomenon
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Sacral insufficiency fractures develop over a period of time and show time-dependent changes. We report on 15 CT examinations of 5 patients with early-stage insufficiency fractures of the sacrum. In 4 patients only irregular sclerosis without distinct fracture lines was present in 7 of 8 fractures. Of these 4 patients; 3 exhibited intraosseous gas inclusions in a ventral part of a lateral mass; 5 of 8 fractures disclosed a ventral cortical break. When distinct fracture lines had developed in 1 patient, intraosseous vacuum phenomenon had disappeared. Fracture lines evolve over weeks to months and show central bone absorption. The fractures can heal as demonstrated in 4 of 6 fractures in 3 patients, can persist over 1 year without significant changes or can progress to pseudoarthrosis with bone destruction similar to neuropathic joint disease. Intraosseous vacuum phenomena can persist to this stage. Intraosseous vacuum phenomenon is recognized as a potential finding in the early stage of sacral insufficiency fracture, which also is true for irregular sclerosis and ventral cortical disruption.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00187667
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  • 5
    Digitale Medien
    Digitale Medien
    Percutaneous transhepatic embolization of a spontaneous mesocaval shunt after liver transplantation (1994)
    Springer
    European radiology 4 (1994), S. 479-482 
    Details
    ISSN: 1432-1084
    Schlagwort(e): Liver transplantation ; Mesocaval shunt ; Catheter embolization
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00212827
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  • 6
    Digitale Medien
    Digitale Medien
    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
    Schlagwort(e): Liver cirrhosis ; Varicose bleeding ; Transjugular intrahepatic portosystemic stent shunt ; Children ; Orthotopic liver transplantation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01954487
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  • 7
    Digitale Medien
    Digitale Medien
    Investigation of a silicon single crystal by means of the diffraction of Mössbauer radiation (1984)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 40 (1984), S. 459-465 
    Details
    ISSN: 1600-5724
    Quelle: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Thema: Chemie und Pharmazie , Geologie und Paläontologie , Physik
    Notizen: Diffraction experiments with resonant γ-radiation were performed on a single crystal of silicon at room temperature. The high energy resolution of the Mössbauer effect was used to separate elastically and inelastically scattered radiation. A special experimental setup is described, which in addition allows the determination of the total thermal diffuse scattered intensity. Inelastically scattered radiation was observed in the whole investigated angular range. In the vicinity of Bragg reflections the ratio of the integrated intensities of inelastically to elastically scattered radiation was in very good agreement with the results of calculations using different computer programs based on first-order thermal diffuse scattering theory for a wide range of chosen scan lengths. The measured ratios of the elastically scattered radiation of different Bragg reflections were used to determine the temperature factor B.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1107/S0108767384000891
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  • 8
    Digitale Medien
    Digitale Medien
    Separation of elastically and inelastically scattered γ-radiation from LiNbO3 by Mössbauer diffraction (1984)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 40 (1984), S. 465-468 
    Details
    ISSN: 1600-5724
    Quelle: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Thema: Chemie und Pharmazie , Geologie und Paläontologie , Physik
    Notizen: Mössbauer diffraction experiments have been performed on a LiNbO3 single crystal at room temperature for scattering angles between 14.5 and 40.5°. A large contribution of inelastically scattered intensity was detectable for all scattering angles. Radiation damage caused by the high-energy components of the radiation emitted by the 57Co Mössbauer source was observed. An attempt was made to estimate the temperature factor B from the measured inelastically scattered radiation assuming that first- order thermal diffuse scattering (TDS) is dominant. Both the TDS contribution to the integrated intensity within the Bragg peak and the ratio of the integrated first-order TDS included in the Bragg peak to that included in the background were calculated with various programs from the elastic constants and compared with the experimental values.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1107/S0108767384000908
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  • 9
    Digitale Medien
    Digitale Medien
    Absorption Spectrum of Oxygen at High Pressures and the Existence of O 4 Molecules (1934)
    [s.l.] : Nature Publishing Group
    Nature 134 (1934), S. 463-463 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] At high pressures gaseous oxygen exhibits a large number of absorption bands between 12610 and 2200 A., similar to those of the liquid1. In order to establish the nature of these bands one of us together with Finkelnburg2 commenced about three years ago to measure ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/134463a0
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  • 10
    Digitale Medien
    Digitale Medien
    Raman Spectra of Benzene and Hydrogen Iodide inthe Liquid and Solid State (1934)
    [s.l.] : Nature Publishing Group
    Nature 133 (1934), S. 910-911 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] A SYSTEMATIC' investigation at low temperatures of the oscillation and rotation Raman spectra of simple molecules as they are affected by their state of aggregation and by temperature seems to us of great importance; for the transition from the gaseous to the liquid state will show mainly the ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/133910b0
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