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
    Electronic Resource
    Electronic Resource
    Springer
    Plant and soil 220 (2000), S. 279-287 
    ISSN: 1573-5036
    Keywords: liming ; organic anions ; pectinates ; plant alkalinity ; soil pH
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract In a soil incubation experiment, the effect of green material of faba bean (Vicia faba L.) and wheat (Triticum aestivum L.) on soil pH was compared. In comparison with control, the application of both plant materials caused a significant soil pH increase. The liming effect was higher for faba bean than for wheat. This difference in liming effect between the two plant species was closely related to their alkalinity concentration. In total, 82% of the alkalinity in faba bean and 96% of that in wheat were water-soluble. To elucidate possible factors responsible for the difference in liming effect, plant matter of wheat and faba bean was fractionated and organic anions were identified. The total concentration of identified organic anions was comparable for both plant species. For wheat, over 80% of the alkalinity occurred in the form of simple organic anions with malate as the dominant one. In faba bean, only 40% of the alkalinity was identified as simple organic anions. About 40% of the alkalinity were related to macromolecules, possibly pectinates. Our data suggest that macromolecules such as pectinates may be mainly responsible for the greater liming effect of faba bean, as compared to wheat.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 35 (1997), S. 3065-3074 
    ISSN: 0887-624X
    Keywords: phosphatidylcholine analogous diamine ; interfacial polycondensation ; phospholipid analogous polyamides ; solvent-resistibility ; crystallinity ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Polyamides (4a-b and 5a-b) were synthesized from interfacial polycondensation of novel diamine containing phosphatidylcholine analogous moiety, hexamethylene diamine with adipoyl chloride, or sebacoyl chloride in the interface of water and carbon tetrachloride at room temperature. The characterizations of synthesized diamine and polyamides were carried out with FT-NMR, or IR spectral method, elemental analysis, and melting point measurements, respectively. These polyamides obtained are insoluble in any normal solvents. From the results of X-ray diffraction analysis and POM observation, it was revealed that the polyamide 4b was prepared with high molecular weight, while polyamide 4a obtained seemed to have low molecular weight. For copolymers 5a and 5b, X-ray reflections from only adipoyl or sebacoyl chloride parts were observed as in crystalline state. In addition, thermal properties were also studied by DSC and transmitted light intensity measurements. © 1997 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 35: 3065-3074, 1997
    Additional Material: 7 Ill.
    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...