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
Filter
  • Chemistry  (6)
  • Differentiation  (3)
  • Inorganic Chemistry  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Gene Structure and Expression 824 (1985), S. 209-217 
    ISSN: 0167-4781
    Keywords: (Rat myoblast) ; Cell culture ; Differentiation ; Gene expression ; Histone mRNA subspecie
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Gene Structure and Expression 1009 (1989), S. 177-183 
    ISSN: 0167-4781
    Keywords: (Rat) ; Differentiation ; Gene regulation ; Histone ; Myoblast ; Transcription
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , 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
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 17 (1986), S. 61-65 
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Investigation of Non-Magnetic Manganese-Silicon-Steels for Retaining RingsThe need for higher strength of retaining rings on electric generator shafts is met today by stress corrosion resistant austenitic manganesechromium-nitrogen-steels like X 5 MnCr N 18 18. The aim of this paper is the investigation of less expensive manganese-silicon-carbon-steels for perfectly dry conditions. By cold working and a recrystallising annealing treatment, as well as by the addition of 0.1 % niobium a small grain size is achieved. Thereby the flow stress is raised and furthermore by silicon which increases the solution strengthening and the work hardening rate during the final cold working. Compared to the steel X 55 MnCr 184 the alloy X 55 MnSi 18 3 shows a higher strength but is more sensitive to stress corrosion cracking.
    Notes: Dem Wunsch nach hochfesten Kappenringen für Wechselstromgeneratoren wird heute durch spannungsrißkorrosionsbeständige austenitische Stähle wie X 5 MnCrN 18 18 entsprochen. Das Ziel der vorliegenden Arbeit war die Untersuchung kostengünstigerer Mangan-Silizium-Kohlenstoff-Stähle für völlig trockene Betriebsbedingungen. Durch Kaltverformung und Rekristallisation sowie durch Zugabe von 0,1% Niob läßt sich eine feine Korngröße einstellen. Dadurch steigt die Fließgrenze wie auch durch die Zugabe von Silizium, das die Mischkristallhärte und den Verfestigungskoeffizient bei der abschließenden Kaltverformung erhöht. Im Vergleich zum bisher gebräuchlichen kostengünstigen Stahl X 55 MnCr 184 zeigt die Legierung X 55 MnSi 18 3 eine höhere Festigkeit, aber auch eine stärkere Neigung zur Spannungsrißkorrosion.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1432-0878
    Keywords: Key words Apoptosis ; p53 ; Ischemia ; Enterocytes ; Proliferation ; Differentiation ; ISEL ; Glomeruli ; Mouse (Balb/c) ; Human
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract  Morphological changes associated with apoptosis are closely correlated with the expression of specific proteins. However, the cause-effect relationships between the expression of these proteins and DNA degradation are barely known. For studying expression of apoptosis-related proteins in relation to different degrees of DNA fragmentation, the small intestine with its spatially organized continuum of proliferation, differentiation and death is a very useful preparation. Enterocytes towards the apex of the villi become increasingly susceptible to apoptosis. Here, this ”apoptotic gradient” is used to demonstrate the presence of BAX and BCL-2 proteins in the cytoplasm of cells at the onset of apoptosis. In semithin serial sections of the small intestine, BAX, BCL-2 and DNA fragmentation were demonstrated. BAX and BCL-2 are always colocalized and only in cells with fragmented DNA. The gradient of BAX or BCL-2 staining is similar to the gradient of DNA fragmentation. Immunoreactivity for BCL-2 or BAX is most intense in cells that are prone to become apoptotic next in the course of cellular turnover but not in cells in an advanced apoptotic state, showing strongly condensed chromatin. When using the same technique on semithin sections of kidney biopsies, containing epithelia with low cellular turnover, we found DNA fragmentation mainly in the epithelial cells of the distal tubules. Similar to the situation in the enterocytes, BAX staining was confined to the cytoplasm of epithelial cells with a moderate degree of DNA fragmentation and reduced in epithelial cells with a high degree of DNA fragmentation. In contrast to the situation in the small intestine, very low levels of BCL-2 were found. The results suggest that expression of BCL-2 and BAX is related to cell damage as indicated by DNA fragmentation but not to advanced stages of cellular death, as indicated by chromatin condensation and cellular shrinkage.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 49 (1976), S. 139-148 
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: The method under discussion allows the determination of aminoendgroups in acid dyed polyamide 6 and polyamide 6.6 fibres. The dyestuff is removed from the solution of the dyed fibre by treatment with an ionexchanger. The free aminogroups can be determined afterwards by potentiometric titration.Under the conditions of the resin-treatment a hydrolysis of the amidebond, a cleavage of chainregulators and an adsorption of the polymer can be excluded. Spinning preparations interfere with the determination. Their influence can be diminished by extraction with polar solvents. Dyed samples show a greater content of aminoendgroups, this can be explained by hydrolysis of the polyamide during dyeing, catalyzed by the dyestuff.
    Notes: Das beschriebene Verfahren gestattet die Bestimmung von Aminoendgruppen an mit Säurefarbstoffen gefärbten Polyamiden. Eine Lösung des gefärbten Polymeren wird zur Entfernung des Farbstoffes einer Austauscherbehandlung unterworfen; die so freigesetzten Aminoendgruppen werden dann durch eine potentiometrische Titration bestimmt.Unter den Bedingungen der Austauscherbehandlung ist bei Polyamid-6 und -6,6 eine Hydrolyse der Amidbindung, eine hydrolytische Abspaltung von Kettenlängenregulatoren und eine Adsorption des Polymeren am Austauscher auszuschließen. Der störende Einfluß von Faserpräparationen läßt sich durch eine vorherige Extraktion mit polaren Lösungsmitteln beseitigen. Die während des Färbevorganges auftretende Hydrolyse des Polyamids wird durch die Sulfogruppen des Farbstoffes katalysiert.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 483 (1930), S. 17-30 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 61 (1928), S. 1847-1855 
    ISSN: 0365-9631
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 37 (1904), S. 3699-3708 
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 61 (1928), S. 2436-2440 
    ISSN: 0365-9631
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    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...