Library

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
    ISSN: 1432-1440
    Keywords: Surface markers ; Acute lymphoblastic leukemia ; Oberflächenmarker ; Lymphoblastenleukämien
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei 47 Patienten mit unreifzelliger lymphatischer Leukämie wurden die mononukleären Zellen des peripheren Blutes, in einigen Fällen auch lymphatische Zellen des Knochenmarkes, hinsichtlich ihrer Membranmarker untersucht. Folgende Marker wurden verwendet: die Rosettenbildung mit Schaferythrozyten, der Nachweis von Oberflächenimmunglobulinen, des Fc-Rezeptors sowie des Komplementrezeptors. Bei 6 der 23 unbehandelten Patienten bildete der Großteil der Blasten Spontanrosetten mit Schaferythrozyten (T-ALL), bei zwei dieser 6 Patienten waren am Großteil der Lymphoblasten auch Komplementrezeptoren nachweisbar. Bei einem weiteren Patienten waren an den Lymphoblasten sowohl Fc- als auch Komplementrezeptoren vorhanden. 16 der 23 Patienten waren Marker negativ (O-ALL). Wurden die beiden Gruppen — eine mit Markern, eine ohne Marker — hinsichtlich ihres klinischen Bildes und Verlaufes verglichen, so zeigte sich, daß die Marker positiven Leukämien fast durchwegs dem männlichen Geschlecht angehörten und häufig einen Mediastinaltumor entwickelten. Ferner lag die Remissionsrate in dieser Gruppe deutlich niedriger als in der Gruppe der Marker negativen Leukämien. Bei 24 Patienten in Remission, die durchwegs unter zytostatischer Erhaltungstherapie standen, waren sowohl die Rosetten-bildenden Lymphozyten als auch die Lymphozyten mit Oberflächenimmunglobulinen und Fc-Rezeptoren vermindert. Der Anteil an Rosetten-bildenden Lymphozyten korrelierte mit dem klinischen Verlauf insoferne, als bei Patienten mit schlechtem klinischen Verlauf diese Verminderung ausgeprägter war als bei Patienten mit günstigem Verlauf.
    Notes: Summary In 47 patients with acute lymphoblastic leukemia surface markers were evaluated on mononuclear cells of the peripheral blood as well as in some cases on bone marrow lymphocytes. The lymphocytes were characterized by their binding capacity for sheep red blood cells, the demonstration of Fc-receptors, complement receptors as well as surface immunoglobulins. In 6 of 23 untreated patients the blasts bound sheep red blood cells spontaneously (T-ALL), in two of these six cases the lymphoblasts had simultaneously receptors for complement. In a further patients the lymphoblasts had complement- and Fc-receptors. The blasts of 16 of 23 patients were negative in respect to the markers tested (O-ALL). By comparing two groups of patients—one with positive cells, one unreactive—the clinical features differed: the marker positive group showed a predominance of male patients, 5 of 7 patients had a massive mediastinal mass and the remission rate was lower than in the group with positive blasts. 24 patients in remission under maintance treatment had a decreased percentage of rosette forming lymphocytes as well as lymphocytes with surface immunoglobulins and Fc-receptors. There existed some correlation between the percentage of rosette forming lymphocytes and the clinical course: patients with complications had lower percentages of rosette forming lymphocytes than patients with a favourable course.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1432-0630
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' journal of analytical chemistry 358 (1997), S. 352-355 
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Surface changes on muscovite mica induced by tip-surface interactions in atomic force microscopy (AFM) experiments under liquids are described. Investigations have been performed with AFM operated both in contact mode (CM-AFM) and in tapping mode (TM-AFM). Additionally, force-distance measurements have been carried out. In contrast to CM-AFM pronounced surface changes can be observed in TM-AFM experiments. However, TM-AFM images of areas previously scanned in contact mode show that imaging in contact mode changes the surface, too. An evaluation of force-distance measurements reveals that these changes depend on the adhesive interaction between tip and sample, which in turn strongly depends on the surrounding medium. The artefact can be avoided by changing the pH-value of the medium or by working with mixtures of ethanol and water. This greatly enhances the applicability of TM-AFM for in-situ investigation of surface processes on mica, which is a frequently used substrate for many technological and biological applications.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Tapping mode atomic force microscopy (TM-AFM) has been successfully used for in-situ imaging of the deposition of ZnS films with the successive ionic layer adsorption and reaction (SILAR) method. The films were deposited in-situ using the commercial TM-AFM liquid cell as a flow-through reactor. The potential of TM-AFM has been used to study the growth of ZnS on different substrates up to 50 SILAR cycles. Reactants and rinsing water were alternately exchanged in the cell by a computer controlled valve system. In comparison to earlier work performed with the conventional AFM operated in contact mode, imaging artefacts introduced by lateral shear forces can be largely eliminated with TM-AFM. On glass the roughness is observed to decrease initially until typical island formation takes place at a larger number of deposition cycles. On mica island formation can be observed right from the beginning of the process and the roughness increases with increasing number of deposition cycles.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract In this study phase detection imaging (PDI) and Young’s modulus microscopy (YMM) have been used for investigation of ZnS thin films deposited on Si(100) substrates with successive ionic layer adsorption and reaction (SILAR). The additional information obtained by these techniques allows a better interpretation of the topographic images in the case of the determination of the number of grains, their distribution and surface coverage. Moreover, the comparison between PDI and YMM is discussed in order to shed more light on the contrast mechanism in phase detection imaging.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 1432-0630
    Keywords: PACS: 07.79.Lh; 85.40.Ux; 07.05.Tp
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Aequationes mathematicae 60 (2000), S. 25-37 
    ISSN: 1420-8903
    Keywords: Keywords. Functional equations, fractional iteration, composition.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Summary. Certain systems of functional equations related to the iteration of functions with a fixed point are considered. We construct smooth solutions in terms of expansions about a fixed point. In a particular example taken from an intuitive geometric situation the solution is obtained explicitly as a convergent Taylor series. Particular attention is given to the question of selecting distinguished solutions from an infinity of possible solutions. This classical topic is presented in a transparent way by consistently using compositional notation. The method described may be applied in similar situations, e.g. for handling iterations arising in discrete dynamical systems.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Electrical engineering 24 (1930), S. 29-36 
    ISSN: 1432-0487
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The growth of ZnS thin films on a mica substrate in a Successive Ionic Layer Adsorption and Reaction (SILAR) process has been studied. The films were deposited in-situ using the commercial AFM liquid cell as flow-through reactor. Reactants and rinsing water were exchanged in the cell continuously by a computer controlled valve system. In this way the film growth could be observed directly in a time resolved sequence of images taken after 1 up to 100 cycles. The results show that the stability of the films increases between 1 and 30 cycles and that a full coverage of the surface is reached after approximately 50 cycles.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...