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
    Tragkraftschwankungen bei Magnetschwebefahrzeugen mit integriertem, synchronem Linearantrieb und ihre sicherheitstechnische Bedeutung (1980)
    Springer
    Electrical engineering 62 (1980), S. 301-308 
    Details
    ISSN: 1432-0487
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Description / Table of Contents: Contents In this paper the influence of the motor current on the magnetic force is investigated by an analytical method. With the integrated synchronous linear motor the reactions of the current sheet on the excitation field are depending on the pole angle and the amplitude of the current sheet. For an undisturbed operation — current sheet and induction wave in phase — the influence of the motor current on the magnetic force can be neglected. In case of a disturbed performance, i.e. when the pole angle is changing periodically, fluctuations of the magnctic force will be found. This effect has to be compensated by a reserve magnetic force in the levitation control. With the technical data for the new magnetic levitation pilot plants (International Traffic Fair 1979 at Hamburg and Transrapid — Pilot Plant Emsland) the stated relations are evaluated. Approximated relations for the levitation force are derived. For comparison, a finite-difference computer programme from the “Institut für elektrische Maschinen, Antriebe und Bahnen, Technische Universität Braunschweig” is applied. The approximated relations developed in this paper are verified — with a sufficient precision — by the numerical calculations.
    Notes: Übersicht In der vorliegenden Abhandlung wird mit Hilfe eines analytischen Verfahrens der Einfluß des Motorstromes auf die Tragkraft untersucht. Rückwirkungen des Statorstrombelages auf das Erregerfeld sind beim synchronen Langstatorantrieb über den Pollagewinkel und die Strombelagsamplitude gegeben. Im ungestörten Betrieb — Strombelagsund Induktionswelle in Phase — ist der Einfluß des Statorstromes auf die Magnettragkraft infolge der Ankernutung zu vernachlässigen. Im gestörten Betrieb, also beim durchlaufenden Pollagewinkel, treten Tragkraftschwankungen auf, die durch eine Stellkraftreserve in der Tragkraftregelung kompensiert werden müssen. Mit den technischen Daten der neuen Magnetschwebe-Versuchsanlagen (zur Internationalen Verkehrs-Ausstellung 1979 in Hamburg — IVA-Bahn —, Transrapid Versuchsanlage Emsland — TVE —) werden die aufgestellten Beziehungen ausgewertet. Die Kontrolle der praxisnahen Betrachtung und der daraus entwickelten Näherungsbeziehung für die Tragkraft erfolgt mit einem Feldberechnungsprogramm des Institutes für elektrische Maschinen. Antriebe und Bahnen der TU-Braunschweig. Die numerischen Berechnungen bestätigen das im Rahmen der vorliegenden Abhandlung entwickelte Näherungsverfahren mit einer für die Praxis ausreichenden Genauigkeit.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01570960
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Interferenzmikroskopische Untersuchungen über die Eiweißbildung von Plasmazellen (1968)
    Springer
    Annals of hematology 18 (1968), S. 142-148 
    Details
    ISSN: 1432-0584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The synthetic output of the various plasma cell populations depends on the structural density of the cytoplasm. In the test material selected it is possible to delineate various function-dependent plasma cell types.
    Notes: Zusammenfassung Die Syntheseleistung der verschiedenen Plasmazellpopulationen ist abhängig von der Strukturdichte des Zytoplasmas. Am gewählten Untersuchungsgut lassen sich verschiedene funktionsabhängige Plasmazelltypen abgrenzen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01632421
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Autopsy findings in AIDS — A histopathological analysis of fifty cases (1987)
    Springer
    Journal of molecular medicine 65 (1987), S. 654-663 
    Details
    ISSN: 1432-1440
    Keywords: AIDS ; Autopsy ; Histopathology ; HIV ; Opportunistic infections
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Fifty consecutive AIDS autopsy cases were evaluated. All subjects showed one or more opportunistic infections and malignancies included in the AIDS case definition with cytomegalovirus and Kaposi's sarcoma being most prevalent. Mycobacterial and cryptococcal infections occurred only infrequently. Most patients of our series after successful treatment ofPneumocystis carinii pneumonia or cerebral toxoplasmosis later succumbed to less treatable conditions like disseminated cytomegalovirus or fungal infections or malignant lymphoma. In the absence of specific treatment for the HIV infection leading to these lethal complications special emphasis must be put on the prevention of HIV transmission and spread.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01875500
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Myelopoietic cell proliferation in granulocytopenia of refractory anaemia and preleukaemic states with hyper-plastic bone marrow (1976)
    Springer
    Journal of molecular medicine 54 (1976), S. 211-216 
    Details
    ISSN: 1432-1440
    Keywords: Autoradiographie ; Cytophotometrie ; Myelopoiese ; Präleukämie ; Refraktäre Anämie ; Autoradiography ; Cytophotometry ; Myelopoiesis ; Preleukaemia Refractory anaemia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Myelopoiesis in healthy subjects and in 8 cases of refractory anaemia or preleukaemic states was studied by the combined cytophotometric-autoradiographic method. Granulocytopenia was present in 7 of 8 cases. The results can be summarized as follows: 1. Mature myelocytes of healthy persons are a mainly differentiating cell population with a low labelling index (3–10%) and a high incidence in G1-Phase. 2. The proliferating immature granulopoietic cells of the patients with neutropenia showed a reduced labelling index with3H-thymidine as a result of an arrest of these cells in G1 (6 of 8 cases). 3. A similar result was obtained in the study of the hyperplastic myelopoiesis of an other patient with preleukaemia and normal granulocyte count in peripheral blood, with the disturbance of cell proliferation preceding the symptom neutropenia. 4. Finally in only one case an increased frequency of myelopoietic cells in G2-phase was found suggesting an arrest of cell proliferation in the premitotic phase.
    Notes: Zusammenfassung Mit der cytophotometrisch-autoradiographischen Methode wurde die Myelopoiese von Gesunden und 8 Patienten mit refraktärer Anämie oder Präleukämie untersucht. Eine Granulocytopenie lag in 7 von 8 Fällen vor. Die Ergebnisse können folgendermaßen zusammengefaßt werden: 1. Reife Myelocyten gesunder Probanden bilden eine Zellpopulation, die sich hauptsächlich differenziert; sie weist einen niedrigen Markierungsindex auf (3–10%) und findet sich überwiegend in der präsynthetischen Phase. 2. Die proliferierenden unreifen Zellen der Myelopoiese von Patienten mit einer Neutropenie zeigten einen verminderten Markierungsindex mit3H-Thymidin, der durch eine Arretierung dieser Zellen in der G1-Phase (6 von 8 Patienten) zustande kommt. 3. Eine ähnliche Beobachtung wurde ergänzend bei einem Patienten mit Präleukämie und hyperplastischer Myelopoiese gemacht; trotz normaler Granulocytenwerte im peripheren Blut war eine Störung der Zellproliferation erkennbar. 4. Schließlich wurde nur in einem Fall eine Zunahme der Myelocytenzahl in der G2-Phase gefunden als Ausdruck einer Arretierung proliferierender Zellen in der prämitotischen Phase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01469127
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Two human genes encoding zinc finger proteins, ZNF12 (KOX 3) and ZNF 26 (KOX 20), map to chromosomes 7p22-p21 and 12q24.33, respectively (1991)
    Springer
    Human genetics 〈Berlin〉 86 (1991), S. 585-590 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Two members of the human zinc finger Krüppel family, ZNF 12 (KOX 3) and ZNF 26 (KOX 20), have been localized by somatic cell hybrid analysis and in situ chromosomal hybridization. The presence of individual human zinc finger genes in mouse-human hybrid DNAs was correlated with the presence of specific human chromosomes or regions of chromosomes in the corresponding cell hybrids. Analysis of such mouse-human hybrid DNAs allowed the assignment of the ZNF 12 (KOX 3) gene to chromosome region 7p. The ZNF 26 (KOX 20) gene segregated with chromosome region 12q13-qter. The zinc finger genes ZNF 12 (KOX 3) and ZNF 26 (KOX 20) were localized by in situ chromosomal hybridization to human chromosome regions 7p22-21 and 12q24.33, respectively. These genes and the previously mapped ZNF 24 (KOX 17) and ZNF 29 (KOX 26) genes, are found near fragile sites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00201545
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Die Wirkung des Oestriols auf Cervix und Vagina (1957)
    Springer
    Archives of gynecology and obstetrics 189 (1957), S. 278-280 
    Details
    ISSN: 1432-0711
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00990690
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Theory of the photon-drag effect inp-type germanium with a parabolic and anisotropic band-structure approximation (1978)
    Springer
    Applied physics 15 (1978), S. 433-438 
    Details
    ISSN: 1432-0630
    Keywords: 72.40 ; 07.62
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract This paper shows that many features of the photon-drag voltage generated by illumination ofp-germanium with 10.6 μm radiation can be understood on the basis of a parabolic but anisotropic band-structure model. The group velocities of the heavy and light holes participating in the optical transitions are obtained by an analysis of the conservation laws. Since the nonequilibrium hole densities in both bands depend directly on the momentum relaxation times in the determinant equations of continuity, these times are the parameters with the strongest influence on the numerical results. The photon-drag voltage consists of components longitudinal and transverse with respect to the axis of illumination. For the longitudinal components, good agreement between our theoretical results and experimental data from the literature is achieved if the crystal is illuminated along a [100] or [111] direction. Though a transition probability independent of light polarisation has been assumed, the transverse effect (illumination along [111]) can be computed for special measuring conditions. The calculated effects of anisotropy are higher than known from experiments possibly due to the approximations used for the valence bands and the transition probability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00886164
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Cholic acid and ursodeoxycholic acid therapy in primary biliary cirrhosis (1993)
    Springer
    European journal of clinical pharmacology 45 (1993), S. 221-225 
    Details
    ISSN: 1432-1041
    Keywords: Primary biliary cirrhosis — Ursodeoxycholic acid therapy ; cholic acid ; α-dihydroxy bile salts
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary We treated 6 patients with Stage II primary biliary cirrhosis with cholic acid (CA) 10 mg · kg−1 per day for 3 months and then with the same dose of ursodeoxycholic acid (UDCA). A matching group of 6 patients was observed for 3 months without any therapy. Liver function tests and serum and stool bile acids were investigated before, during and at the end of CA and UDCA therapy. The results of liver function tests deteriorated after 6–8 weeks of CA therapy and the changes were correlated (r=0.92) with an increase in α-dihydroxy-bile acids (chenodeoxycholic acid and deoxycholic acid) in the serum. The 24 h excretion of DCA in 24 h faeces was markedly increased. Ursodeoxycholic acid treatment improved liver function tests; after 4 weeks glutamate dehydrogenase (GLDH) had decreased. After 8–12 weeks of therapy ursodeoxycholic acid had increased to 50–60% of the total serum bile acids whereas the more apolar bile acids were significantly decreased. No changes in liver function tests or bile acid metabolism were found in the untreated group. Since CA and UDCA are non-toxic in man, this trial indicates that the apolar bile acids chenodeoxycholic acid and deoxycholic acid may be responsible for the deterioration of liver function in primary biliary cirrhosis. However, the therapeutic effect of UDCA cannot be explained merely by the decrease in α-dihydroxy-bile acids in the serum, since the laboratory results had improved prior to the decrease in the serum apolar bile acids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00315387
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Beitrag zum Klippel-Trénaunay-Weber-Syndrom (1964)
    Springer
    Acta neurochirurgica 12 (1964), S. 52-68 
    Details
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The clinical and especially the pathologico-anatomical findings in a 20 year old male with left sided enlargement of his head and angiomatous malformations are illustrated and described; the case is also compared with those in the literature. The pathological features may be classified as those of aKlippel- Trénaunay- Weber syndrome. In the discussion, the presence of an intracerebral angiomatous arteriovenous fistula is gone into in detail.
    Abstract: Résumé Les constatations cliniques et surtout anatomo-pathologiques au sujet d'un homme de 20 ans avec un élargissement du côté gauche de sa tête et des malformations angiomateuses sont illustrées et décrites. Le cas est comparé avec ceux de la littérature. Les manifestations pathologiques peuvent être classées comme celles d'un syndrome deKlippel-Trénaunay- Weber. Dans la discussion, la présence d'une fistule artérioveineuse dans l'angiome intracérébral est détaillée.
    Notes: Zusammenfassung Die klinischen und vor allem die pathologisch-anatomischen Befunde eines 20jährigen Mannes mit linksseitigem Riesenwuchs des Kopfes und Blutgefäßmißbildungen werden unter Berücksichtigung des Schrifttums mitgeteilt und durch Abbildungen belegt. Die Veränderungen lassen sich zum Klippel-Trénaunay-Weber-Syndrom zusammenfassen. In der Diskussion wird besonders auf das Vorliegen einer intracerebralen, angiomartigen, arteriovenösen Fistel eingegangen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01404702
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Cloning and chromosomal localization of a human endothelin ETA receptor
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 181 (1991), S. 184-190 
    Details
    ISSN: 0006-291X
    Keywords: [abr] ET ; [abr] ETA:; endothelin type ETA ; [abr] Endothelin
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0006-291X(05)81399-3
    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...