ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

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

Proceed reservation?

Export
Filter
  • Institute of Physics  (158)
  • Springer  (130)
  • American Meteorological Society (AMS)
  • 2015-2019  (102)
  • 2010-2014  (80)
  • 2000-2004  (46)
  • 1970-1974  (29)
  • 1955-1959  (18)
  • 1935-1939  (14)
Collection
Years
Year
  • 11
    Electronic Resource
    Electronic Resource
    Springer
    Chromosoma 43 (1973), S. 211-224 
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The diploid number of the Rhesus macaque, Macaca mulatta, is 42. All chromosomes are biarmed and all constitutive heterochromatins are centromeric. The diploid number of the African Green monkey, Cercopithecus aethiops, is 60. Again all chromosomes are biarmed, but seven pairs possess very short second arms which are heterochromatic. The heterochromatins of remaining chromosomes are centromeric. Using G-banding and deleting the heterochromatic short arms, the chromosomes of the African Green monkey can be artificially fused to reconstruct a karyotype of the Rhesus with only one pair of unmatched small metacentrics. In addition to the Robertsonian type of translocations, several sets of centromere-telomere translocations were found. The latter type of translocation reduced three arms into two. Thus the fundamental number can be changed by two mechanisms: growing extra heterochromatic arms and the centromere-telomere fusions.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 12
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 96 (1974), S. 281-289 
    ISSN: 1432-072X
    Keywords: Fungal Nuclei ; Isolation ; Purification ; Characterization ; Dermatophyte ; Microsporum gypseum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A method is reported for the isolation of nuclei from the dermatophytic fungus,Microsporum gypseum. The yield ranged from greater than 90% in crude preparations to less than 20% in highly purified preparations as judged by the recovery of DNA. Nuclei isolated in this manner appeared intact in electron microscopic observations and possessed chemical compositions, i.e. low protein/DNA and RNA/DNA ratios, which indicated a low degree of cytoplasmic contamination.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 13
    ISSN: 1432-1424
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Summary (1) When salts are added to buffered suspensions of membrane fragments containing the fluorochrome 1-anilino-8-naphthalenesulfonate (ANS), there is an increased fluorescence. This is caused by increased binding of the fluorochrome; the intrinsic fluorescence characteristics of the bound dye remain unaltered. These properties make ANS a sensitive and versatile indicator of ion association equilibria with membranes. (2) Alkali metal and alkylammonium cations bind to membranes in a unique manner. Cs+ binds most strongly to rat brain microsomal material, with the other alkali metals in the order Cs+〉Rb+〉K+〉Na+〉Li+. The reaction is endothermic and entropy driven. Monovalent cations are displaced by other monovalent cations. Divalent cations and some drugs (e. g., cocaine) displace monovalent cations more strongly. (3) Divalent cations bind to membranes (and to lecithin micelles) at four distinct sites, having apparent association constants between 50 and 0.2mm −1. The characteristics of the titration suggest that only one species of binding site is present at any one time, and open the possibility that structural transitions of the unassociated coordination sites may be induced by divalent cation binding. Divalent cation binding at the weakest site (like monovalent cation binding) is endothermic and entropy driven. At the next stronger site, the reaction is exothermic. Monovalent cations affect divalent cation binding by reducing the activity coefficient: they do not appear to displace divalent cations from their binding sites.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 14
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 23 (1935), S. 453-456 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 15
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 25 (1937), S. 417-420 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 16
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 42 (1955), S. 442-443 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 17
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 136 (1973), S. 349-354 
    ISSN: 1432-0878
    Keywords: Intranuclear paracrystalline inclusions ; kidney ; Proximal tubule cells ; Canine ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Résumé Des inclusions intranucléaires paracristallines ont été mises en évidence dans les tubes proximaux de reins de chien. Ces inclusions sont constituées par une répétition régulière d'unités élémentaires microtubulaires de 85±15 Å de diamètre avec une périodicité de 120±20 Å. Elles ne sont jamais en contact ni avec le nucléole ni avec la membrane nucléaire. L'étude histochimique montre qu'il s'agit d'inclusions de nature protéique. Ces inclusions ont été observées à la fois dans les reins greffés (autogreffes) après conservation dans un perfusat artificiel (selon «Collins» ou «Perfudex») pendant 24 heures à 0°C et dans les reins normaux. N'étant jamais rencontrées au niveau de cellules rénales lésées, il ne semble pas que ces inclusions expriment une dégénérescence cellulaire.
    Notes: Summary The occurrence of intranuclear paracrystalline inclusions in proximal tubules of the canine kidney is described. These inclusions are composed of a regular repetition of microtubular elementary units of 85±15 Å thickness with a periodicity of 120±20 Å. They have no contact with the nucleolus or the nuclear membrane. Histochemical findings suggest that these inclusions may be proteinaceous. They are both observed in grafted kidneys (autografts) after conservation during 24 hours at 0°C in a synthetic solution (according to “Collins” or “Perfudex”) and in normal kidneys. There were no signs of degeneration in cells containing such inclusions; therefore, the possibility that these structures are of degenerative nature seems less probable.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 18
    ISSN: 1432-0878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Umladebereich und mittlerer isoelektrischer Punkt (IEPM) verschiedener menschlicher Gewebe wurden mit Hilfe von gestuften Reihen gepufferter Lösungen vom Fluorochrom Acridinorange auf fluoreszenzmikroskopischem Wege bestimmt. Zum Vergleich wurde an Schnittpräparaten der gleichen Gewebe die Bestimmung von Umladebereich und IEPM mit den Diachromen Methylenblau und Rubin S durchgeführt. Es zeigte sich, daß das Fluorochrom Acridinorange in der Bestimmung des Umladebereiches und IEPM den Diachromen überlegen ist. Infolge der höheren Nachweisempfindlichkeit von Acridinorange und seiner Fluoreszenzmetachromasie läßt sich der Umladebereich viel leichter als bei den Hellfeldfarbstoffen einengen und somit genauer bestimmen. Während man bei Verwendung von Diachromen zur exakten Bestimmung des IEPM zwei Farbstoffe benötigt, genügt bei der Acridinorange Methode ein Farbstoff. Die mit Acridinorange bestimmten Werte vom Umladebereich und IEPM der einzelnen Gewebselemente liegen meist weiter im sauren Bereich als bei Bestimmung mit Diachromen. Bei dem Vergleich unfixierter, in Alkohol oder Formalin gehärteter Gewebe ergab sich, daß nach Fixierung die untere Grenze vom Umladebereich gegenüber der an unfixiertem Gewebe bestimmten weiter in den sauren Bereich verschoben ist.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 19
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 116 (1939), S. 265-267 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 20
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 112 (1938), S. 436-439 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...