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  • 2005-2009
  • 1995-1999  (4)
  • Glycosylation  (2)
  • Chemistry  (1)
  • Conjugation  (1)
  • 1
    Electronic Resource
    Electronic Resource
    A newly identified chemotactic sexual pheromone from Closterium ehrenbergii (1998)
    Springer
    Sexual plant reproduction 11 (1998), S. 81-85 
    Details
    ISSN: 1432-2145
    Keywords: Key words Closterium ehrenbergii ; Chemoattractant ; Conjugation ; Sexual pheromone ; Protoplast-release-inducing protein
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  In sexual reproduction of Closterium ehrenbergii, pairing with the sexual partner cells is the first process observed. A cell migration-inducing activity, specific for mating-type plus (mt+; NIES-228) cells, was detected in the culture medium of mating-type minus (mt–; NIES-229) cells. Light was necessary for production of the active substance by mt– cells and for migration of mt+ cells. The active substance was heat-labile and had an apparent molecular mass of 20 kDa, as determined by gel filtration. A protein of 20 kDa was detected in the active fraction of gel filtration after sodium dodecyl sulfate polyacrylamide gel electrophoresis. Based on these results, it is proposed that a chemotactic sexual pheromone involved in the formation of sexual pairs of cells is secreted by mt– cells of C. ehrenbergii and is proteinaceous, like other sexual pheromones secreted by Closterium species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004970050123
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Effects of fructose ingestion on sorbitol and fructose 3-phosphate contents of erythrocytes from healthy men (1996)
    Springer
    Acta diabetologica 33 (1996), S. 100-102 
    Details
    ISSN: 1432-5233
    Keywords: Fructose 3-phosphate ; Sorbitol ; Erythrocyte ; Glycosylation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To investigate the effect of fructose ingestion on sorbitol and fructose 3-phosphate (F3P) in erythrocytes, we administered 50 g fructose with and without treatment with an aldose reductase inhibitor, epalrestat, to seven healthy, normal-glucose-tolerant, male volunteers aged 20–43 years. The same subjects were given 50 g glucose on another day. The sorbitol and F3P contents in their erythrocytes increased significantly, reaching peak levels at 60 min and 180 min, respectively, following fructose ingestion. On the other hand, glucose ingestion did not cause any statistically significant change in sorbitol content in their erythrocytes, although it significantly elevated their F3P content. Treatment with epalrestat had no significant effect on incremental changes in erythrocyte sorbitol and F3P content following fructose ingestion. This suggests that oral fructose may be converted directly to sorbitol and F3P in erythrocytes instead of being converted via glucose. Thus, the dietary intake of fructose may affect the concentrations of sorbitol and F3P in erythrocytes in normal men.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00569417
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Effects of fructose ingestion on sorbitol and fructose 3-phosphate contents of erythrocytes from healthy men (1996)
    Springer
    Acta diabetologica 33 (1996), S. 100-102 
    Details
    ISSN: 1432-5233
    Keywords: Key words  Fructose 3-phosphate ; Sorbitol ; Erythrocyte ; Glycosylation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract   To investigate the effect of fructose ingestion on sorbitol and fructose 3-phosphate (F3P) in erythrocytes, we administered 50 g fructose with and without treatment with an aldose reductase inhibitor, epalrestat, to seven healthy, normal-glucose-tolerant, male volunteers aged 20–43 years. The same subjects were given 50 g glucose on another day. The sorbitol and F3P contents in their erythrocytes increased significantly, reaching peak levels at 60 min and 180 min, respectively, following fructose ingestion. On the other hand, glucose ingestion did not cause any statistically significant change in sorbitol content in their erythrocytes, although it significantly elevated their F3P content. Treatment with epalrestat had no significant effect on incremental changes in erythrocyte sorbitol and F3P content following fructose ingestion. This suggests that oral fructose may be converted directly to sorbitol and F3P in erythrocytes instead of being converted via glucose. Thus, the dietary intake of fructose may affect the concentrations of sorbitol and F3P in erythrocytes in normal men.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00569417
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Compatibility and tensile behavior of polypropylene/ethylene-propylene rubber blends (1995)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 35 (1995), S. 1261-1271 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: This study clarifies and quantifies factors which increase the ductility of a low-molecular-weight propylene homopolymer having an intrinsic viscosity of 0.89 dl/g. The tensile behavior of homopolymer/ethylene-propylene rubber (EPR) blends was studied from the viewpoint of the associated molecular structure of EPR and its compatibility with the homopolymer. When EPR is “dissolved” in a homopolymer, the glass transition temperature (Tg) of the amorphous phase of a homopolymer was found to shift to a lower temperature, with homopolymer/EPR compatibility being subsequently evaluated using this shift, i.e., Δtg. Results show two conditions are required to improve the ductility of the low-molecular weight propylene homopolymer: ΔTg must be ≥ 3°C and ≥ 30 wt% EPR must be blended with the homopolymer.
    Additional Material: 18 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760351602
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    Paper (German National Licenses)
    Fulltext
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