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
  • 1
    Electronic Resource
    Electronic Resource
    A Morphologic and Biochemical Evaluation of the Spider Syndrome in Suffolk Sheep (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Anatomia, histologia, embryologia 17 (1988), S. 0 
    Details
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The distal radial growth plates of six pairs of spider-affected and non-affected lambs were compared after light and electron microscopic evaluation. Light microscopy revealed regions within the spider-affected physes that lacked the distinctly columnized appearance of the normal ones. However, provisional calculation as revealed by von Kossa staining did not differ between the two groups; nor were there marked ultrastructural differences between control and spider lamb growth plate chondrocytes or matrices. The spider growth plates were also studied after concanavalin A and wheat germ agglutinin lectin histochemistry. Intracellular and extracellular staining patterns did not differ from previously reported normal patterns. Finally, SDS-PAGE analysis of collagen extracted in the native state from spider-affected cortical bone revealed that it is comprised of type I collagen that is normal in its primary structure; furthermore, there is no type III collagen present.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0264.1988.tb00567.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    The epidemiology of hepatitis C in turkey (1994)
    Springer
    Infection 22 (1994), S. 411-414 
    Details
    ISSN: 1439-0973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Das Hepatitis C Virus (HCV) und das Hepatitis E Virus (HEV) sind weltweit die Haupterreger der Non-A, Non-B-Hepatitis: In der Türkei sind ein Drittel der Fälle von akuter Hepatitis Non-A, Non-B. Eine Seroprävalenzstudie für HCV wurde durchgeführt, um die Epidemiologie des HCV, einschließlich der Assoziation von HCV und HEV in der Türkei zu ermitteln. Seren von Einwohnern von fünf verschiedenen Regionen des Landes wurden auf Antikörper gegen HCV (anti-HCV) und HEV (anti-HEV) getestet. Bei 21 von 1.374 Personen (1,5%) wurde anti-HCV nachgewiesen. Der Test war häufiger positiv bei Einwohnern über 54 Jahre (p=0,02), bei Personen, die unter dem Hauptschul-Bildungsstand waren (p=0,013), bei Familien mit mehr als zwei Kindern (p=0,003) und bei Personen, die in der Region von Ayvalik (p=0,046) oder Trabzon (p=0,038) wohnen — verglichen mit Einwohnern von Istanbul. Zwischen anti-HCV und anti-HEV bestand eine marginale Assoziation, die bei 5,9% der Einwohner aufgedeckt wurde. Die HCV-Infektion tritt in allen Regionen der Türkei auf und ist häufiger bei älteren Personen und bei niedrigem sozio-ökonomischen Status. Für die Einschränkung der HCV-Übertragung in der Türkei sollten — falls Mittel verfügbar sind — Schritte wie das anti-HCV Screening von Blutspenden durchgeführt werden.
    Notes: Summary Hepatitis C virus (HCV) and hepatitis E virus (HEV) are the principal causes of non-A, non-B hepatitis worldwide, and in Turkey one-third of the cases of acute hepatitis are non-A, non-B. To explore the epidemiology of HCV in Turkey (including the association of HCV with HEV), a seroprevalence study of HCV was conducted. Sera from residents from five distinct regions of the country were tested for antibodies to HCV (anti-HCV) and HEV (anti-HEV). Anti-HCV was detected in 21 (1.5%) of 1,374 persons and was more common in residents over 54 years of age (p=0.02), with less than primary education (p=0.013), more than two children (p=0.003), and who lived in the regions of Ayvalik (p=0.046) or Trabzon (p=0.038) compared to Istanbul. Anti-HCV was marginally associated with anti-HEV, which was found in 5.9% of residents. However, this association was lost after controlling for age and education (p=0.225). HCV infection occurs in all regions of Turkey and is more common in persons who are older and of low socioeconomic status. As resources permit, efforts to reduce the transmission of HCV in Turkey (such as screening blood donations for anti-HCV) are indicated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01715499
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    A pacemaker digital electrocardiograph for accurate measurements of pacemaker pulse amplitude, width and rate in the assessment of implanted cardiac pacemakers (1972)
    Springer
    Medical & biological engineering & computing 10 (1972), S. 403-408 
    Details
    ISSN: 1741-0444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Description / Table of Contents: Sommaire Au cours des dernières 8 années plus de 170 malades de la région de Glasgow ont reçu des implantations d'entraineurs cardiaques. Tous ces malades se rendent aux cliniques d'entraineurs pour des examens clinicaux et électroniques. La technique de Vecteur Plat Frontal d'Entraineur développé à Glasgow a permis de déceler beaucoup de changements dans la fonction de l'entraineur souvant avant que les symptômes clinicaux ne soient apparus. Jusqu'ici des mesures ont été faites utilisant un oscilloscope différentiel calibré: l'Electrocardiographe Digital d'Entraineur décrit dans ce texte offre une précision améliorée de la mesure du Vecteur Plat Frontal d'Entraineur permettant ainsi un développement supplémentaire de la technique ci-dessus. L'instrument mesure également la largeur et le régime d'impulsions de l'entraineur à±0,1 pour cent près ce qui devrait suffir à déceler le vieillissement des générateurs Madtroniques ‘régime stable’ plus récents (type 5862—régime fixe et type 5842—QRS blocking).
    Abstract: Zusammenfassung Im Laufe der letzten 8 Jahre erhielten über 170 Patienten im Gebiet von Glasgow Herz-Pacemaker als Implantation. Alle diese Patienten besuchen Pacemaker-Kliniken, in denen sowohl klinische wie elektronische Prüfungen durchgeführt werden. Die in Glasgow entwickelte Pacemaker-Frontal Plane Vector-Methode ermöglichte es, zahlreiche Änderungen der Schrittmacherfunktion oft vor dem Auftreten von klinischen Symptomen festzustellen. Bisher wurden die Messungen mit Hilfe eines geeichten Differential-Oszilloskops durchgeführt; der im vorliegenden Artikel beschriebene Digital-Electrokardiograph bietet höhere Meßgenauigkeit des Pacemaker-Frontal Plane Vectors und ermöglicht dadurch Weiterentwicklung des obigen Verfahrens. Das Instrument mißt außerdem die Impulsbreite und-geschwindigkeit des Pacemakers mit einer Genauigkeit von ±0,1 Prozent, was ausreichen dürfte, um Altern des neueren Medtronic ‘Rate-stable’-Generators (Typ 5862—feststehende Geschwindigkeit und Type 5842—QRS Block) aufzufinden.
    Notes: Abstract During the past 8 yr over 170 patients in the Glasgow area have received cardiac pacemaker implants. All such patients attend pacemaker clinics at which both clinical and electronic examinations are carried out. The Pacemaker Frontal Plane Vector technique developed in Glasgow has enabled many changes in pacing function to be detected, often before clinical symptoms appear. Hitherto measurements have been made using a calibrated differential oscilloscope: the Pacemaker Digital Electrocardiograph described in this paper offers improved accuracy in the measurement of the Pacemaker Frontal Plane Vector thus enabling further development of the above technique. The instrument also measures pacemaker pulse width and rate with an accuracy of ±0·1 per cent which should be sufficient to detect ageing of the newer Medtronic ‘rate-stable’ generators (type 5862—fixed rate and type 5842—QRS blocking).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02474220
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Improvements in the technique of assessing implanted cardiac pacemakers (1974)
    Springer
    Medical & biological engineering & computing 12 (1974), S. 589-592 
    Details
    ISSN: 1741-0444
    Keywords: Cardiac pacemakers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Description / Table of Contents: Sommaire A l'heure actuelle, plus de 250 malades subissent un traitement dans les services spécialisés de trois hôpitaux de Glasgow. Depuis 1968 on utilise dans ces services la technique du vecteur planfrontal du pacemaker de même que d'autres investigations ayant pour but de détecter les changements adverses du pacemaker ou de sa fonction rythmique. On décreit un vectocardiographe faisant usage de mesures simultanés par des conducteurs conventionnels d'électrocardiogramme pour les membres, afin de fournir l'affichage direct du vecteur plan-frontal du pacemaker sur écran d'oscillgraphe.
    Abstract: Zusammenfassung Zur Zeit werden über werden ûber 250 Schrittmacher-Patienten in drei Glasgower Krankenhäusern ambulant behandelt. Seit 1968 wird in disen Krankenhäusern das Schrittmachervektor-Frontalebenenverfahren gemeinsam mit anderen Untersuchungen dazu eingesetzt, nachteilige Veränderungen in der Schrittmacherfunktion oder im Schrittmacher selbst aufzudecken. Es wird ein Schrittmacher-Verktorkardiograf beschrieben, bei dem gleichzeitig Messungen mit konventionellen EKG-Gliederleitungen vorgenommen werden, die direkt auf dem Bildschirm eines Oszilloskops den Schrittmacher-Frontalebenenvektor darstellen.
    Notes: Abstract Over 250 pacemaker patients currently attend pacemaker clinics in three Glasgow hospitals. Since 1968, the pacemaker frontal-plane vector technique has been used at these clinics along with other investigations to detect adverse changes in the pacing function, or in the pacemaker itself. A pacemaker vectorcardiograph, which employs simultaneous measurements on conventional e.c.g. limb Leads, gives direct display on an oscilloscope screen of the pacemaker frontal-plane vector.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02477219
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    A vectorcardiograph for assessing implanted cardiac pacemakers (1974)
    Springer
    Medical & biological engineering & computing 12 (1974), S. 593-598 
    Details
    ISSN: 1741-0444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Description / Table of Contents: Sommaire On décrit un vectocardiographe pacemaker servant à évaluer tous les types et marques de pacemakers implantés. La technique fait usage de mesures simultanées par des conducteurs conventionnels fixés sur les membres, rendant possible l'affichage sur écran d'oscillographe soit du vecteur plan-frontal du pacemaker, soit des composantes horizontale et verticale simultanément de l'électrocardiogramme en question. Le vectocardiographe pacemaker a permis de simplifier, l'application de la technique du vecteur plan-frontal pacemaker sur plus de 250 malades porteurs de l'instrument et en cours de traitement dans les services de trois hôpitaux de Glasgow.
    Abstract: Zusammenfassung Dieser Aufsatz beschreibt einen Schrittmacher-Vektorkardiograf zur Beurteilung von eingepflanzten Herzschrittmachern aller Art. Die gleichzeitige Messung mit konventionellen Gliederleitungen und die direkte Darstellung auf dem Bildschirm eines Oszilloskops von entweder der Schrittmachervektor-Frontalebene oder gleichzeitig der senkrechten und horizontalen Komponenten eines durch Schrittmacher beeinflußten EKGs sind möglich. Der Schrittmacher-Vektorkardiograf hat die Anwendung des Schrittmachervektor-Frontalebenenverfahrens an über 250 Schrittmacher-Patienten, die derzeitig ambulant in drei Glasgower Krankenhäusern behandelt werden, vereinfacht.
    Notes: Abstract A pacemaker vectorcardiograph for the assessment of all makes and types of implanted cardiac pacemaker is described. Simultaneous measurement on conventional limb leads is employed and direct display on an oscilloscope screen, either of the pacemaker frontal-plane vector, or simultaneously of the vertical and horizontal components of the paced electrocardiogram, are possible. The pacemaker vectorcardiograph has simplified the application of the pacemaker-frontal-plane-vector technique to over 250 pacemaker patients who currently attend clinics in three Glasgow hospitals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02477220
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    A pacemaker digital electrocardiograph for accurate assessment of implanted cardiac pacemakers (1971)
    Springer
    Medical & biological engineering & computing 9 (1971), S. 503-509 
    Details
    ISSN: 1741-0444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Description / Table of Contents: Sommaire Pendant les derniers 8 ans, plus de 170 patients dans la région de Glasgow ont reçu des implantés d'entraîneurs cardiaques. Tous ces malades fréquentent des cliniques spécialisées ou sont exécutés des examens cliniques et électroniques. La technique du Vecteur du Plan Frontal de l'Entraîneur, développée à Glasgow, a permis de découvrir des nombreux changements dans la fonction de l'entraînement, souvent avant l'apparition des symptômes cliniques. Jusqu'ici, des mesurages étaient faits en utilisant un oscilloscope différentiel calibré; l'Electrocardiographe Digital de l'Entraîneur décrit dans ce mémoire, offre une précision améliorée dans le mesurage du vecteur du plan frontal, en permettant ainsi d'autres développements de la technique susmentionnée. L'instrument mesure aussi l'amplitude et la fréquence du pouls avec une précision de ±0,1 pour cent qui devrait être suffisante pour découvrir le vieillissement des génerateurs Medtronic de ‘fréquence stable’ (type 5862—fréquence fixée et type 5842—qui bloque le QRS).
    Abstract: Zusammenfassung Während der vergangenen 8 Jahre haben 170 Patienten im Gebiet um Glasgow Implantationen von Herzschrittmachern erhalten. Alle Patienten nehmen an klinischen Untersuchungen im Schrittmachen teil, bei denen sowohl klinische und elektronische Untersuchungen durchgeführt werden. Die Technik des Schrittmachervektors der Frontalebene, die in Glasgow entwickelt wurde, hat viele Änderungen in der Feststellung der Schrittfunktion, oft vor Erscheinen klinischer Symptome möglich gemacht. Bisher sind Messungen mit Hilfe eines kalibrierten Differentialoszilloskops gemacht worden. Der in diesem Bericht beschriebene Digitale Schrittmacher Elektrokardiograph ermöglicht verbesserte Genauigkeit in der Messung des Schrittmachervektors der Frontalebene und macht somit weitere Entwicklung der oben beschriebenen Technik möglich. Der Apparat misst auch die Breite und Geschwindigkeit des Schrittmacherpulses mit einer Genauigkeit von ±0,1 Prozent, was ausreichend zur Ermittlung des Alterns der neueren Medtronic ‘geschwindigkeitsfesten’ Generatoren (Typ 5862—feste Geschwindigkeit und Typ 5842—QRS Blockierung) sein sollte.
    Notes: Abstract During the past 8 yr over 170 patients in the Glasgow area have received cardiac pacemaker implants. All such patients attend pacemaker clinics at which both clinical and electronic examinations are carried out. The Pacemaker Frontal Plane Vector technique developed in Glasgow has enabled many changes in pacing function to be detected, often before clinical symptoms appear. Hitherto, measurements have been made using a calibrated differential oscilloscope: the Pacemaker Digital Electrocardiographic described in this paper offers improved accuracy in the measurement of the pacemaker frontal plane vector thus enabling further development of the above technique. The instrument also measures pacemaker pulse width and rate with an accuracy of ±0·1 per cent which should be sufficient to detect ageing of the newer Medtronic ‘rate-stable’ generators (type 5862—fixed rate and type 5842—QRS blocking).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02474707
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Dynamics of rotationally periodic structures (1979)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 14 (1979), S. 81-102 
    Details
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: The paper considers the finite element analysis of the free, undamped and the forced damped vibrations of rotationally periodic structures. Associated with every natural frequency (except for those for which the deflection is the same at corresponding points on every substructure) there are a pair of orthogonal mode shapes, with eigenvectors {u} and {ü}. The complex vector {z}={u}+i{ü} is also an eigenvector of the equations of motion, and represents a rotating normal mode. The deflection of one substructure has the same amplitude as, and a constant phase difference from the deflection of the preceding substructure. It is therefore possible to analysse the complete structure by considering only one substructure, and applying appropriate complex constraints at its boundary with the following substructure, so as to and applying appropriate complex constrainsts at its boundary with the following substructure, so as to impose this phase difference. The method has been implemented in a computer program and is illustrated by analyses of an alternator end winding, a cooling tower with legs, and a wheel of turbine blades.For forced vibration, it is shown that any arbitrary oscillatory force can be decomposed into a series of rotating forces. For any one of these rotating components, there is a fixed relationship between the amplitude and phase of the force acting on one substructure, and that acting on an adjoining substructure. This relationship, which does not involve any approximation, can be used to enable a series of calculations of the response of one substructure to be performed instead of one on the whole structure. A series of calculations on an individual substructure normally requires much less computer time and storage than a single calculation on the complete structure.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nme.1620140107
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Errors in natural frequency calculations using eigenvalue economization (1982)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 18 (1982), S. 1521-1527 
    Details
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: The eigenvalue economization process is an efficient way of reducing the size of eigenvalue problems to manageable proportions, at the expense of introducing approximations. The use of automatic criteria for selecting the slave variables to be eliminated has considerably eased the use of this technique recently. However, it is necessary to ensure that unacceptable errors are not introduced by the condensation process. Until recently, there has been little available to guide the user in estimating errors except past experience. In this paper, the errors introduced in the condensation process are considered theoretically, using an algebraic approach. This enables an absolute error bound to be stated, together with an approximate bound which can be very easily evaluated. Examples are given of the use of the approximate bound.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nme.1620181007
    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...