Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 11
    Electronic Resource
    Electronic Resource
    Calcification of the islets of langerhans and renal cortical tubular epithelium in alloxan treated calciphylactic rats (1963)
    Springer
    Cellular and molecular life sciences 19 (1963), S. 314-314 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Es wird über das Vorkommen der akuten Calcifikation im Bereich der Langerhans'schen Inseln und des renalen Tubularepitheliums mit Alloxan behandelter Ratten während des calciphyllaktischen Zustandes berichtet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02150428
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 12
    Electronic Resource
    Electronic Resource
    Beitrag zur kausalen und formalen Pathogenese tödlicher Paraquatvergiftungen (1977)
    Springer
    International journal of legal medicine 80 (1977), S. 1-7 
    Details
    ISSN: 1437-1596
    Keywords: Paraquat, kausale und formale Pathogenese der Vergiftung ; Vergiftungen, Paraquat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Description / Table of Contents: Zusammenfassung Die durch Paraquat (dimethyl - dipyridilium) verursachten tödlichen peroralen Vergiftungen sind bei längerer Überlebenszeit durch eigenartigen Pneumotropismus mit schweren, den Tod verursachenden Lungenveränderungen gekennzeichnet. Sie waren außerordentlich schwer bei einem Vergifteten, der mit Hyperbaroxie behandelt wurde. Zur Klärung der Rolle des Sauerstoffs in Alveolarluft wurde ein Experiment an Ratten durchgeführt. In drei Versuchsgruppen wurde Paraquat (PQ) per os in LD50/20 verabreicht und die Ratten wurden nach verschiedenen Zeitinterwallen in einem sauerstoffreichen Raum exponiert. Die Kontrollen erhielten bloß PQ oder O2 unter gleichen Bedingungen — ohne Vergiftungserscheinungen oder pathologische Befunde im Lungengewebe nachzuweisen. Alle Versuchstiere der Gruppe, die unmittelbar nach PQ Verabreichung Luft mit 88–93 % O2 Gehalt einatmeten, gingen in 16–24 Std. ein. Die elektronenoptischen Veränderungen des Lungengewebes wurden beschrieben. Die Schädigung betrifft besonders Pneumonozyten beider Typen in der Alveolarwand. Einatmung hoch sauerstoffreicher Luft vervielfacht die Toxizität und Letalität des Paraquats.
    Notes: Summary Case reports of severe lung damage in patients treated with oxygen following paraquat poisoning lead the autors to design an experiment, in which the contributory role of oxygen was tested. It was shown on rats that administration of oxygen in paraquat — intoxicated rats causes, already in the LD50/20 dosage of paraquat, death in all experimental animals during the first 24 hours. Light and electron micorscopic examination revealed edema, desquamation of alveolar epithelium with cell destruction of typ I and Typ II pneumocytes and total denudation of the alveolar basement membrane. Alveolar macrophages participated in the removal of the cellular debris. The toxic substance itself was not detectable in the blood of the rats 24 hours or later after the oral application.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02332340
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 13
    Electronic Resource
    Electronic Resource
    Thermal effects of the absorbed microwave power in the measurements of ferromagnetic resonance (1968)
    Springer
    Czechoslovak journal of physics 18 (1968), S. 389-392 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The paper draws attention to a possible instantaneous increase in sample temperature in measurements of ferromagnetic resonance if the absorbed microwave power exceeds a certain limit and if no allowance is made for adequate heat transfer. In the investigations carried out, the limit was about 1 μW.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01689840
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 14
    Electronic Resource
    Electronic Resource
    Die Sättigungseffekte Bei Senkrechtfeldresonanz in YIG (1970)
    Springer
    Czechoslovak journal of physics 20 (1970), S. 211-221 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Zusammenfassung Messungen des Imaginärteils der Suszeptibilitätχ″ als Funktion der Mikrowellenfeldstärkeh wurden bei Hauptresonanz an Proben aus reinem und mit Dysprosium dotierten Yttrium-Eisen-Granat durchgeführt. Die Gestalt derχ″ (1/h)-Kurven urde auf Grund einer früher veröffentlichten Theorie behandelt. Der an der Probe 3 gemessene Verlauf vonχ″ kann befriedigend mit Hilfe des Modells der unabhängigen Spinwellen interpretiert werden. Dasselbe gilt für die Messung an der Probe 2 mit Gleichfeld in [111]-Richtung. Die Steilheit der quasilinearen Kurvenabschnitte ist bei diesenχ″(1/h)-Kurven von der GrößeΔH/ΔH k abhängig. Die Spinwellenhalbwertsbreite wurde auf Grund des benützten Modells mit Hilfe des Maximums der Größeχ″h bestimmt. Der an der Probe aus reinem YIG gemessene Verlauf vonχ″ stimmt für den Fall des Gleichfeldes in [100]-Richtung mit dem Modell der stark gekoppelten Spinwellen gut überein. Die Messung an dieser Probe mit Gleichfeld in [111]-Richtung weist einen anderen Verlauf derχ″ (1/h) Kurve auf, welcher nicht durch den Einfluß der magnetokristallischen Anisotropie der YIG erklärt werden kann. Dies sollte eher der Anisotropie der GrößeΔH k zugeschrieben werden und wir vermuten, daß die letztgenannte Messung ein Verhalten widerspiegelt, das irgendwo zwischen den mit der Theorie diskutierten Extremfällen liegt. Dasselbe kann von der Messung an der Probe 2 mit Gleichfeld in [100]-Richtung gesagt werden.
    Notes: Abstract The imaginary part of the susceptibilityχ″ at main resonance was measured as a function of the microwave field intensityh on samples of pure YIG and also on YIG doped with Dy. The experimental results are compared with a theory published earlier. In particular the form of theχ″(1/h) curves is discussed and also the way in which the spin wave relaxation frequencies can be determined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01697118
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 15
    Electronic Resource
    Electronic Resource
    Analytic expressions for the partial waves of the off-shell two body coulomb T-matrix (1981)
    Springer
    Czechoslovak journal of physics 31 (1981), S. 941-968 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Closed form expressions for all partial waves of the pure Coulomb off-shell T-matrix 〈p¦ Tc,l.(k 2) ¦p′〉 are obtained. All singularities appear through simple special functions, which makes it possible to study the analytic properties of 〈p¦ Tc,l(k2) ¦p′〉 as a function not only of one of the momentap, p′ but even of both of them. With use of the renormalization procedure found by Zorbas the transition to half-and on-shell values is performed reproducing known expressions. By the same method simple expressions for the partial waves of the Coulomb wave function in the momentum representation are found.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01598460
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 16
    Electronic Resource
    Electronic Resource
    Partial waves of a general off-shell two-body Coulomb-like T-matrix (1982)
    Springer
    Czechoslovak journal of physics 32 (1982), S. 1325-1348 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract On the basis of the Gell-Mann — Goldberger two-potential formalism we investigate the partial waves of an off-shell two-body T-matrix in the case of a general Coulomb-like potentialV=V C +V S . The regular kernelt SC,l determining thel-th partial wave of the short-range partT SC,l of the T-matrix is the solution of the equationt SC,l =V S,l +V S,l G C,l t SC,l . The Lippmann-Schwinger operator of this equation formed by the short-range part of the potential and the pure Coulomb Green's operator is shown to be compact under very general assumptions on the potentialV S admitting potentials vanishing in the coordinate representation liker −1−ɛ (ɛ〉0) in the infinity. The special case of differentiable and analytic potentialsV S,l (p,p′) is considered in particular. The results are used to discuss in full generality the on-shell singularities of Coulomb-like T-matrices and wave functions and to investigate the singular integrals that occur in the Faddeev equations for Coulomb-like interactions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01597677
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 17
    Electronic Resource
    Electronic Resource
    Systematic approach to the theory of Jost functions (1983)
    Springer
    Czechoslovak journal of physics 33 (1983), S. 593-609 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01832146
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 18
    Electronic Resource
    Electronic Resource
    Jost functions in the two-potential formalism (1983)
    Springer
    Czechoslovak journal of physics 33 (1983), S. 745-756 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract For two inhomogeneous Schrödinger equations playing an important role within the framework of the Gell-Mann — Goldberger two-potential formalism we derive the integral equations for the off-shell solutions and give the relations between the regular and Jost solutions. We define the Jost functions fully off the energy shell. The obtained formulae give the possibility to extend the validity of various useful relations derived within the one-potential theory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01589747
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 19
    Electronic Resource
    Electronic Resource
    Experimental studies on cardiac muscle cell adaptation to insult (1977)
    Springer
    Basic research in cardiology 72 (1977), S. 214-221 
    Details
    ISSN: 1435-1803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung An Ratten wurden Untersuchungen über Anpassungserscheinungen des Myokards an Schädigung durchgeführt, die nach Unterbindung der linken Koronararterie zu verzeichnen sind. In der ischämischen Zone lagen offene Kollateralen vor, wie sich durch Anwendung von HRP, einem extrazellulären Proteintracer zeigen ließ. Dieses Phänomen kann die inhomogenen Veränderungen der Herzmuskelzellen in der frühen Phase einer koronarogenen Schädigung erklären. Erneute Perfusion machte die Schädigung der sarkolemalen Membranen deutlich, demonstrierbar durch den Einstrom von HRP in die geschädigten Zellen. Die Stimulierung der Herzmuskelzellen modifiziert die Bindung von Makromolekülen an bestimmten Zellkomponenten und kann die Heillungsprozesse beeinflussen. Korrelative enzymhistochemische und ultrastrukturelle Untersuchungen ließen beim überlebenden Myokard die Entwicklung alternativer Stoffwechselwege sowle Zeichen morphologischer Anpassung erkennen, die eine erhöhte Resistenz dieser Herzmuskelzellen gegenüber nachfolgenden Schädigungen erklären.
    Notes: Summary Studies were carried out in rats on myocardial adaptation to injury produced by left coronary artery ligation. In the ischemic zone, open collaterals were present as shown by studies using the fine structural extracellular protein tracer, horseradish peroxidase (HRP). This phenomenon may explain the inhomogeneous cardiac muscle cell alteration in the early phase of coronarogenic myocardial injury. Reperfusion, as evidenced by the influx of HRP into the damaged cells, unmasked sarcolemmal membrane injury. Cardiac muscle cell stimulation modifies the binding of macromolecules to cell components and may influence the repair processes. In the surviving myocardium, correlative enzyme histochemical and ultrastructural studies demonstrated the development of alternative metabolic pathways and morphological signs of adaptation explaining increasing resistance of such cardiac muscle cells to subsequent insult.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01906364
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 20
    Electronic Resource
    Electronic Resource
    A new method of measuring paramagnetic and ferromagnetic resonance (1961)
    Springer
    Czechoslovak journal of physics 11 (1961), S. 528-539 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Abstract В РАБОтЕ пОДАН кРАткИИ АНАлИж И ОпИсАНИЕ НОВОгО МЕтОДА ИжМЕРЕНИь пАРАМАгНИтНОгО И ФЕРРОМАгНИтНОгО РЕжОНАНсОВ В ДИАпАжОНЕ сАНтИМЕтРОВых ВОлН, кОтОРыИ пОжВОльЕт ДОстИгНУть АВтОМАтИЧЕскОЕ И тОЧНОЕ НАстАВлЕНИЕ ЧАстОты клИстРОНА НА ЧАстОтУ РЕжОНАтОРА, НЕпРЕРыВНУУ жАпИсь спЕктРАльНых лИНИИ И жАпИсь пО тОЧкАМ. пРИНцИп пРИМЕНИМ ВО ВсЕх МИкРОВОлНОВых ДИАпАжОНАх. ЧУВстВИтЕльНОсть И стАБИльНОсть спЕктРОМЕтРА, сОстАВлЕННОгО НА ОсНОВЕ ОпИсАННОгО МЕтОДА, УДОВлЕтВОРьЕт тРЕБОВАНИьМ Дль ИжМЕРЕНИь В пАРАМАгНИтНОИ И ФЕРРОМАгНИтНОИ ОБлАстьх. В ОпИсАННОМ УстРОИстВЕ (ФАктОР ДОБРОтНОстИ ИжМЕРьУЩЕИ пОлОстИQ 0≅4000) НАИМЕНьшАь НАДЕжНО ИжМЕРЕННАь шИРИНА лИНИИ пОглОЩЕНИь кОлЕБлЕтсь ОкОлО 10 ОЕ.
    Notes: Abstract The paper gives a brief analysis and description of a new method of measuring paramagnetic and ferromagnetic resonance on centimetre waves, which permits automatic and exact adjustment of the klystron frequency to the frequency of the cavity, continuous recording of the spectral lines and recording point by point. The principle is suitable for all microwave bands. The sensitivity and stability of the spectrometer, constructed on the basis of this method, satisfies requirements for measurement in the region of paramagnetic and ferromagnetic resonance. In the arrangement given (the unloadedQ-factorQ 0≅4000), the smallest reliably measurable width of the absorption lines is around 10 Oe.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01688130
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...