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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Mathematische Annalen 15 (1879), S. 211-237 
    ISSN: 1432-1807
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Mathematische Annalen 18 (1881), S. 82-90 
    ISSN: 1432-1807
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Mathematische Annalen 19 (1882), S. 497-516 
    ISSN: 1432-1807
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Mathematische Annalen 10 (1876), S. 221-226 
    ISSN: 1432-1807
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 23 (1971), S. 334-336 
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Archives of virology 61 (1979), S. 283-288 
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Selective damage of the optic nerve of 14 rabbits without interfering with the choroidal blood flow which supplies the retina and without altering the autonomic nerve supply was successfully achieved by Xenon coagulation. This procedure interrupted the axonal pathway between the brain and the eye. After experimental infection with Borna disease virus the typical disease could be induced. The pathognomonic retinopathy as well as characteristic perivascular choroidal infiltrates, however, did not appear in eyes with coagulated nerve heads. In general virus-specific antigen or infectious virus were not present in the retinas of such damaged eyes. These results permit the conclusion that the ocular expression of Borna disease is a consequence of virus transport via the optic nerve.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Mathematische Annalen 12 (1877), S. 476-480 
    ISSN: 1432-1807
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Graefe's archive for clinical and experimental ophthalmology 195 (1975), S. 33-40 
    ISSN: 1435-702X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Der zeitliche Verlauf der Wasserstoffionenkonzentration im Kammerwasser nach Natronlaugenverätzungen der Kaninchenhornhaut ohne und mit Therapie wurde an 300 Augen bis zum Erreichen physiologischer pH-Werte untersucht und statistisch analysiert. Nach Verätzungen mit schwacher Lauge (1n NaOH) wird ein “therapeutischer pH-Wert” von 8,5 im Mittel bereits nach ca. 30 min erreicht, bei mittelstarker Lauge (3n NaOH) dauert es 2,5 Std und bei starker Lauge (6n NaOH) ca. 5 Std. Schließt man der Verätzung mit starker Lauge (6n NaOH) sofort eine Dauerspülung mit physiologischer Kochsalzlösung an, so sinkt der pH-Wert im Mittel bereits nach ca. 2,5 Std auf 8,5; wird die physiologische Kochsalzlösung durch eine Phosphatpufferlösung (Isogutt®) ersetzt, erreicht man diesen Wert bereits nach ca. 1 Std.
    Notes: Summary 300 rabbit corneas were burned for 1 minute by applying a filter paper of 10 mm diameter soaked in different concentrations of NaOH. The aqueous humor pH was then measured at certain time intervals and after different treatment methods until the physiologie pH of 7.6 was reached. The results were statistically analysed. Group 1, 2 and 3 were burned with 1n NaOH, 3n NaOH and 6n NaOH respectively without any treatment. In these groups a “therapeutic” pH-level of 8.5 was measured on an average 0.5, 2.5 and 5 hours after the burn (Table 1 and Fig. 2). Group 4 and 5 again were burned with 6n NaOH. In group 4 the burn was followed by constant irrigation with physiologic saline by means of the Morgan Therapeutic Lens® (Fig 1a and b). With this regimen a pH of 8.5 was reached after 2.5 hours (Table 1 and Fig. 3). In group 5 the physiologic saline solution was replaced by a buffer solution (Isogutt®) and a pH of 8.5 was measured after only one hour (Table 1 and Fig. 3). Based upon these results it is felt that severe lye burns should be treated by constant irrigation with a buffer solution for several hours. A treatment that can easily be performed by use of the Morgan Therapeutic Lens®.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Graefe's archive for clinical and experimental ophthalmology 216 (1981), S. 111-119 
    ISSN: 1435-702X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die Bornasche Krankheit kommt unter natürlichen Bedingungen bei Pferden und Schafen in Form einer letalen Encephalo-Myelitis vor. Das auslösende Agens, ein neurotropes Virus, ist noch nicht ausreichend charakterisiert, läßt sich vermutlich jedoch unter die konventionellen RNS-haltigen Viren einordnen. Durch experimentelle Infektion ließ sich beim Kaninchen reproduzierbar eine multifokale Retino-Chorioiditis auslösen. Aufgrund verschiedener klinischer, histologischer und virologischer Resultate konnte angenommen werden, daß die Erkrankung nicht ausschließlich durch direkte virale Zellschädigung ausgelöst wird. Um ein mögliches immunologisches Geschehen abzugrenzen wurde der Krankheitsverlauf unter immunsuppressiver Behandlung beobachtet. Gegenüber der Kontrollgruppe fand sich erstens eine Verlängerung des Zeitintervalls zwischen intrakranieller Infektion und dem ersten Auftreten der fokalen Pigmentepithelschädigung. Zweitens wurde die charakteristische Konfluenz der multifokalen Retino-Chorioiditis in frühen und mittleren Krankheitsstadien nicht beobachtet. Schließlich fanden wir in einzelnen Fällen bei behandelten Tieren entweder keine Augenerscheinungen oder auch einen passageren Stillstand der sonst rasch progredienten Entzündung. Die Beobachtungen zeigen, daß nicht antiviral wirksame Immunsuppressiva auf den klinischen Verlauf einer virusinduzierten Retino-Chorioiditis einwirken können. Hieraus ist der Rückschluß möglich, daß immunologische Faktoren den Krankheitsverlauf und möglicherweise die Herdmorphologie einer durch neurotrope Viren ausgelösten Retino-Chorioiditis beeinflussen.
    Notes: Abstract Borna disease occurs naturally in horses and sheep and causes an encephalomyelitis which is fatal. Little is known about the etiologic agent. There is evidence, however, that this neutrotropic virus belongs to the conventional enveloped RNA viruses. Experimentally infected rabbits exhibited a highly reproducible multifocal retinochoroidopathy. Clinical, histologic, as well as virologic results suggested that immunologic events gave rise to the characteristic clinical expression of the disease. To investigate possible immunpathologic factors, infected rabbits were treated with immuno-suppressive drugs. As compared with controls three outstanding features were observed in the treated group: (1) The time interval between infection and the occurrence of inflammatory ocular foci was considerably prolonged; (2) confluency of retinal lesions was not noted in the early course of the disease; and (3) a lack of ocular lesions or a nonprogression over several days, never observed in controls, occurred in a small percentage of treated animals. These observations indicate that the clinical course of virus-induced inflammatory lesions of the retina and choroid can be changed by treatment with immunosuppressive drugs. It can be assumed that the appearance of the individual fundus lesion depends on the immuno-logic status of the infected host.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1573-3297
    Keywords: chickens ; selection ; obesity ; food intake ; hypothalamic lesions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract The relationship between genetic and hypothalamic obesity was investigated by comparing the response to electrolytic lesioning of the ventromedial hypothalamus in chickens from lines developed through divergent selection for high and low body weight. The high-weight line exhibits obesity, while the low-weight line is relatively lean. Lesioned adult chickens from the low-weight line exhibited the expected obesity syndrome, while lesioned high-weight-line chickens exhibited neither increased feed consumption nor increased body weight. The results suggested that artificial selection for increased body weight resulted in a diminution of hypothalamic satiety mechanisms.
    Type of Medium: Electronic Resource
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