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  • 1
    Titel: Scientific computing in electrical engineering . proceedings of the 3rd international workshop, August 20-23, 2000, Warnemünde, Germany; 18
    Beteiligte Person(en): VanRienen, Ursula , Günther, Michael , Hecht, Dirk , Rienen, U. van , Günther, M. , Hecht, D.
    Verlag: Berlin u.a. :Springer,
    Erscheinungsjahr: 2001
    Seiten: 424 S.
    Serie: Lecture notes in computational science and engineering 18
    Materialart: Buch
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    European journal of neuroscience 22 (2005), S. 0 
    ISSN: 1460-9568
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: We compared image computation in the rabbit retina by two different cell types: the so-called ‘local edge detecting’ ganglion cells and the well-known brisk–sustained ganglion cells. From both anatomical and physiological evidence, these cells are present in nearly equal numbers and thus overlap to sample the same regions of visual space. We recorded simultaneously from overlapping cells on a dense microelectrode array. The results were analysed using an anatomically realistic simulation of the retina's processing levels. The ‘local edge detecting’ cell was found to be tuned to higher spatial frequencies and to have a narrower spatial frequency bandpass than the brisk–sustained cells. Simulation revealed that this is due primarily to the ‘zero-crossing’ detector implied by the definition of the local edge detector. The outputs of the simulations in response to complex images were analysed quantitatively. The results showed the population of local edge detectors to transmit a sparser code than the brisk–sustained cells.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Springer
    The visual computer 9 (1993), S. 459-465 
    ISSN: 1432-2315
    Schlagwort(e): Animation ; Biomechanics ; Distributed Computing
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Informatik
    Notizen: Abstract Physics-based animation can be generated by performing a complete dynamical simulation of multibody systems. This leads to the solving of a complex system of differential equations in which biomechanical results for the physics of impacts are incorporated. Motion control is achieved by interactively modifying the internal torques. Realtime response requires the distribution of the workload of the computation between a high-speed compute server and the graphics workstation by means of a remote-procedure call mechanism.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Springer
    Der Chirurg 68 (1997), S. 279-282 
    ISSN: 1433-0385
    Schlagwort(e): Key words: Intermuscular lipoma ; Intramuscular lipoma ; Infiltrating lipoma ; Treatment ; Diagnosis. ; Schlüsselwörter: Intermusculäres Lipom ; intramusculäres Lipom ; infiltrierendes Lipom ; Diagnose ; Therapie.
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung. Intramusculäre Lipome sind seltene benigne Tumore, die wegen ihres nicht abgrenzbaren Wachstums auch als infiltrierende Lipome bezeichnet werden und tief lokalisiert die Skelettmuskulatur befallen. Klinisch imponiert als einziges Symptom eine palpable Raumforderung. Mikroskopisch findet sich zwischen den Muskelfasern monovacuoläres Fettgewebe, welches die Myocyten verdrängt. Im Extremfall kann die präexistente Muskulatur völlig durch Fettgewebe ersetzt werden. Eine sorgfältige pathohistologische Untersuchung aus einer repräsentativen Biopsie ist notwendig, um die Verwechslung mit einem gut differenzierten Liposarkom zu vermeiden. Die verspätete Diagnosestellung, die Ausdehnung und die Lokalisation des Tumors lassen R0-Resektionen oft nicht zu und beeinflussen die Rezidivraten, die zwischen 3 und 62 % angegeben werden [4]. R0-Resektionen sind in Fällen, bei denen postoperativ bedenkliche Funktionsverluste zu erwarten sind, nicht anzustreben. Funktionsstörungen werden langsam eintreten und können weitgehend kompensiert werden, im Gegensatz zu einem sofortigen Funktionsverlust nach radikaler Chirurgie.
    Notizen: Summary. Intramuscular lipomas are rare, benign unencapsulated tumors. They are also called infiltrating lipomas because of their infiltrative growth pattern which, deeply localized, seizes the skeleton muscle. The only obvious symptom is a palpable mass. Microscopically, monovacular fat tissue shows up between the muscle fiber. In extreme cases the preexisting muscle can be totally replaced by fat tissue. A precise pathohistological examination is needed to avoid the mistaken diagnosis of a well-differentiated liposarcoma. Late diagnosis, the extent and the localization of the tumor often do not allow for an R0 resection and influence the postoperative recurrence rates, which lie between 3 and 62 %. R0 resections are not desirable when postoperative severe loss of function can be expected. Malfunctions will slowly take place and can greatly be compensated, in contrast to a radical procedure with immediate loss of function.
    Materialart: Digitale Medien
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  • 5
    facet.materialart.
    Unbekannt
    Meisenheim, etc. : Periodicals Archive Online (PAO)
    Zeitschrift für philosophische Forschung. 27:4 (1973:Okt./Dez.) 607 
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 6
    ISSN: 1420-908X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract In the operative treatment of appendicitis the so called negative appendectomy is an important issue because of its increased morbidity. From the hypothesis that the intestinal diamine oxidase activity is a suitable marker of mucosal integrity, the distribution pattern of the enzyme in appendices histologically classified as inflammed or not inflammed was studied. Histologically apparent inflammation of the appendix was connected with a significant reduction of diamine oxidase activity. The determination of this enzymic activity may be a simple and sensitive test for mucosal inflammation of the appendix even at a very early state. This could reduce the rate of negative appendectomies and influence thereby risk-cost-benefit calculations.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 7
    ISSN: 1432-1076
    Schlagwort(e): Excitotocicity ; Ketamine ; N-methyl-d-aspartate receptor ; Strychnine ; Non ketotic hyperglycinaemia
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Abstract Non-ketotic hyperglycinaemia (NKH) is a severe seizure disorder associated with high glycine levels. Glycine is a major inhibitory neurotransmitter in the CNS, but has also modulating effects at one of the glutamate receptors, the N-methyl-d-aspartate-(NMDA) receptor. Based on this knowledge we treated a female newborn suffering from severe NKH with the NMDA receptor blocker ketamine in association with strychnine and magnesium supplementation. This treatment led to cessation of seizures, reappearance of swallowing and sucking and improved the neurological status. Some pharmacokinetic data of strychnine and ketamine in the infant are given. Conclusion Ketamine in combination with strychnine may be beneficial in non-ketotic hyperglycinaemia.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 8
    ISSN: 1432-1076
    Schlagwort(e): Key words Excitotocicity ; Ketamine ; N-methyl-d-aspartate ; receptor ; Strychnine ; Non ketotic ; hyperglycinaemia
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Non-ketotic hyperglycinaemia (NKH) is a severe seizure disorder associated with high glycine levels. Glycine is a major inhibitory neurotransmitter in the CNS, but has also modulating effects at one of the glutamate receptors, the N-methyl- d-aspartate-(NMDA) receptor. Based on this knowledge we treated a female newborn suffering from severe NKH with the NMDA receptor blocker ketamine in association with strychnine and magnesium supplementation. This treatment led to cessation of seizures, reappearance of swallowing and sucking and improved the neurological status. Some pharmacokinetic data of strychnine and ketamine in the infant are given. Conclusion Ketamine in combination with strychnine may be beneficial in non-ketotic hyperglycinaemia.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 9
    ISSN: 1572-994X
    Schlagwort(e): HSV-1 thymidine kinase ; site-directed mutagenesis ; HSV-1 TK antiserum
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract The thymidine kinase (TK) of herpes simplex virus type 1 (HSV-1) contains three regions of homology to other ATP utilizing enzymes. We have altered one region of the protein, which seems to play an important role in phosphorylating substrates by site-directed mutagenesis. When the aspartate 162 was changed to asparagine, the enzyme lost its activity. To identify the inactive protein, expressed by a vaccinia vector in eukaryotic cells, a monospecific antiserum against a bacterial tryptophan E-HSV-1 TK fusion protein was made. These results support the suggestion that aspartate 162 is essential for the enzymatic activity.
    Materialart: Digitale Medien
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  • 10
    ISSN: 1432-1866
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie
    Notizen: Abstract Composition and evolution of fluids depositing tin and tungsten ores in Kibaran quartz vein deposits allow the modelling of devolatizing evolved granites as their source at depth. Fluids forming gold quartz veins and breccias are different from the first, especially by showing characteristics of a high-pressure environment. All deposits are controlled by compressional deformation whose fading phases affect earlier formed veins. These findings lead to the conclusion that both anatectic melting resulting in intrusion of fertile granites, and the generation of fluids forming gold deposits are the final consequence of deep crustal metamorphism. The latter was caused by crustal thickening immediately preceding the metallogenetic climax.
    Materialart: Digitale Medien
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