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  • Nitrogen fixation
  • Bone
  • Springer  (5)
  • 1980-1984  (5)
  • 1982  (5)
Collection
Keywords
Publisher
  • Springer  (5)
Years
  • 1980-1984  (5)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Effect of two granular nematicides on growth and nodulation ofArachis hypogea L. (1982)
    Springer
    Plant and soil 66 (1982), S. 413-416 
    Details
    ISSN: 1573-5036
    Keywords: Growth ; Nematicide ; Nitrogen fixation ; Nodulation ; Peanut ; Rhizobium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The effect of two granular nematicidesviz. oxamyl and fenamiphos, on the nodulation and growth of Rhizobium inoculatedArachis hypogaea L. was studied in glasshouse and field trials. In the glasshouse trial at the suggested rates of application shoot fresh weight was significantly reduced by oxamyl whilst root fresh weight was similarly affected by fenamiphos. In the field trial vegetative growth and plant emergence were significantly reduced by both nematicides. Nodulation at the higher rates of application was increased by both oxamyl and fenamiphos whilst oxamyl caused a significant increase in pod number at the highest rate of application.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02183808
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  • 2
    Electronic Resource
    Electronic Resource
    The effects of long-term immobilization on the histomorphology of human cortical bone (1982)
    Springer
    Calcified tissue international 34 (1982), S. 337-342 
    Details
    ISSN: 1432-0827
    Keywords: Bone ; Histomorphology ; Immobilization ; Quadriplegia ; Multiple sclerosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary The cortical bone histomorphometrics, total visible osteon density, and mean osteonal cross-sectional area were determined for the major long bones and sixth ribs of two individuals with neurological deficit. One was a multiple sclerosis patient who had been in a wheelchair for 15 years. The other was a quadriplegic as a result of poliomyelitis. Statistically significant differences in osteon densities occurred only in the case of the quadriplegic. Nevertheless, in that subject, the total visible osteon densities for bones of the right arm were not statistically different from those of their age-matched (control) radii. Medical history records revealed that there had been partial use of this limb. These results support the belief that mechanical stress is an important factor in the maintenance of normal cortical bone remodeling. In addition, since there were subnormal osteon densities and normal mean osteonal cross-sectional areas, immobilization appears to be characterized by reduced activation frequency with a normal amount of bone turnover per BMU.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02411264
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  • 3
    Electronic Resource
    Electronic Resource
    Occurrence of actin-like protein in extracellular matrix vesicles (1982)
    Springer
    Calcified tissue international 34 (1982), S. 376-381 
    Details
    ISSN: 1432-0827
    Keywords: Matrix vesicles ; Bone ; Actin ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary Preliminary indications of the occurrence of actin and myosin in crude matrix vesicle preparations have been reported previously. In the present study extracellular matrix vesicles from rat alveolar bone were isolated. They were further purified by a sucrose density gradient. SDS-polyacrylamide gel electrophoresis of the purified vesicles revealed the presence of a polypeptide with a molecular weight of 43 K daltons and with electrophoretic mobility identical to that of blood platelet actin. The limited proteolysis of both 43 K dalton vesicular polypeptide and actin byStaphylococcus aureus-V8-protease revealed three fragments with identical electrophoretic mobility. In addition, the vesicular preparations inhibited the activity of DNase I, a property typical of actin monomers. Filamentous material extracted from matrix vesicles showed ultrastructural features of F-actin. Reaction of this material with heavy meromyosin resulted in arrowhead formation, which is characteristic of acto-heavy meromyosin. The occurrence of actin in extracellular matrix vesicles may account for their budding from the osteoblastic plasma membrane, their possible motility in the matrix, and maintenance of the spherical shape.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02411271
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  • 4
    Electronic Resource
    Electronic Resource
    Lack of effect of toxic aluminium concentrations on nitrogen fixation by nodulatedStylosanthes species (1982)
    Springer
    Plant and soil 66 (1982), S. 225-231 
    Details
    ISSN: 1573-5036
    Keywords: Aluminium toxicity ; Nitrogen fixation ; Nodulation ; Stylosanthes hamata ; Stylosanthes humilis ; Stylosanthes scabra
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Effects of three solution aluminium concentrations (0, 25, and 100μM) on nitrogen fixation by well-nodulated plants ofStylosanthes hamata, Stylosanthes humilis andStylosanthes scabra are reported. Plants were inoculated with Rhizobium CB756 and grown for 21 days in an aluminium-free nutrient solution at pH 5.3 before imposition of the aluminium treatments. Nitrogen fixation was measured both by the increase in total nitrogen content of the plants and acetylene reduction in roots of plants harvested at 10 and 20 days after imposition of the aluminium treatments. Solution aluminium concentrations as high as 100μM, had no detrimental effect on nitrogen fixation in any species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02183981
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  • 5
    Electronic Resource
    Electronic Resource
    The human tibia: Static testing in bending by anin vivo method (1982)
    Springer
    Annals of biomedical engineering 10 (1982), S. 281-294 
    Details
    ISSN: 1573-9686
    Keywords: Tibia ; Strength ; Bone ; Elastic modulus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract We have developed a method for static testing of the human tibia in bending in the living subject, and fabricated a prototype device for carrying it out. Model testing indicates that the device and model system are inherently accurate and reliable. However, the biological system is more complex, and while more than 200 tests have been conducted with perfect safety, the variability of replicate tests suggests that the method does not yet have general clinical utility. In some subjects, that variance is relatively small, possibly because they are more relaxed and perhaps also for anatomical reasons. In two subjects, postmortem tests corresponded very well with antemortem tests on the tibiometer. We conclude that with further refinements the method may have clinical potential, if only in carefully selected subjects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02367309
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