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  • 1995-1999  (3)
  • Immobilization  (2)
  • Arthrodese.  (1)
  • 1
    ISSN: 1432-0789
    Keywords: Microbial N ; Immobilization ; Remobilization ; NH inf4 sup+ fixation ; Exchangeable NH inf4 sup+
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract In 1991, field experiments on loess (with winter wheat) and sandy soils (with summer barley) were conducted to study N dynamics in the microbial biomass and non-exchangeable NH inf4 sup+ . The measurements showed a mass change in microbial N, with a maximum increase of 100 kg N ha-1 30 cm-1 from March to July in the loess soil, and a change for only 1 month (May) in the sandy soil. Plots treated with conventional levels of N fertilizer (213 kg N ha-1 on a loess soil to winter wheat and 130 kg ha-1 on the sandy soil to summer barley), reduced levels of N (83% and 62% of the conventional N application), or no N showed no consistent fertilizer N effect on microbial biomass N. From March to July, non-exchangeable NH inf4 sup+ in loess soils under winter wheat decreased by 110 kg N ha-1 30 cm-1 in conventionally fertilized plots and by 200 kg N ha-1 30 cm-1 in a plot with no N fertilizer. After harvest, the pool of non-exchangeable NH inf4 sup+ increased due to increasing mineral N concentrations in the soil.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0789
    Keywords: Key words Microbial N ; Immobilization ; Remobilization ; NH4+ fixation ; Exchangeable NH4+
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract In 1991, field experiments on loess (with winter wheat) and sandy soils (with summer barley) were conducted to study N dynamics in the microbial biomass and non-exchangeable NH4 +. The measurements showed a mass change in microbial N, with a maximum increase of 100 kg N ha–1 30 cm–1 from March to July in the loess soil, and a change for only 1 month (May) in the sandy soil. Plots treated with conventional levels of N fertilizer (213 kg N ha–1 on a loess soil to winter wheat and 130 kg ha–1 on the sandy soil to summer barley), reduced levels of N (83% and 62% of the conventional N application), or no N showed no consistent fertilizer N effect on microbial biomass N. From March to July, non-exchangeable NH4 + in loess soils under winter wheat decreased by 110 kg N ha–1 30 cm–1 in conventionally fertilized plots and by 200 kg N ha–1 30 cm–1 in a plot with no N fertilizer. After harvest, the pool of non-exchangeable NH4 + increased due to increasing mineral N concentrations in the soil.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Der Chirurg 69 (1998), S. 1207-1213 
    ISSN: 1433-0385
    Keywords: Key words: Talus ; Fracture ; Necrosis ; Osteosynthesis ; Arthrodesis. ; Schlüsselwörter: Talus ; Fraktur ; Nekrose ; Osteosynthese ; Arthrodese.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung. Von 1989 bis 1995 wurden in der Chirurgischen Universitätsklinik „Bergmannsheil“ in Bochum 45 Patienten mit einer Talusfraktur operativ behandelt, 21 davon noch am Unfalltag. Neun Frakturen konnten nach Marti und Weber mit Typ I, 12 mit Typ II, 18 mit Typ III und 6 weitere mit Typ IV klassifiziert werden. In 25 Fällen handelte es sich um Talushalsfrakturen, die nach der Hawkins-Klassifikation 6mal dem Typ I oder Typ III, 10mal dem Typ II und 3mal dem Typ IV zugeordnet werden konnten. Das durchschnittliche Nachuntersuchungsintervall lag mit einem Minimum von 12 bei 37,3 Monaten. Bei einem Patienten war eine primäre und bei weiteren 2 Patienten eine sekundäre Arthrodese im oberen und unteren Sprunggelenk und bei 2 anderen im talonavicularen Gelenk notwendig. 11 Patienten gaben subjektiv keine, 25 Patienten Beschwerden bei stärkerer Beanspruchung, 5 Patienten Beschwerden beim normalen Gehen und 3 Patienten einen Anlaufschmerz an. Die durchschnittliche Dauer bis zum Abschluß der Behandlung betrug 22,5 Wochen. Sieben Patienten wechselten in der Folge des Unfalls den Beruf. Die Prämissen der operativen Therapie bestehen in einer frühzeitigen Reposition und stabilen Osteosynthese. Verbleibende Beschwerden sind häufig, die Talusnekroserate mit der konsekutiven Notwendigkeit der Arthrodese konnte deutlich gesenkt werden. Sie betrug für die Talushalsfrakturen 8 %.
    Notes: Summary. Forty-five patients with fractures of the talus were treated operatively at the Department of Surgery in Bergmannsheil Hospital between 1989 and 1995. Of these, 21 patients were operated on the day of the accident. The Marti/Weber classification system was used: 9 fractures were type I, 12 type II, 18 type III and 6 type IV. Twenty-five neck-fractures were classified according to Hawkins (type I–6, type II–10, type III–6, type IV–3). The mean time of follow-up was 37.3 months (minimum of 12 months). One patient needed a primary and 2 other patients a secondary arthrodesis of the ankle and subtalar joint; 2 others required arthrodesis of the talonavicular joint. Eleven patients showed no complaints at follow-up. Twenty-five reported complaints only during strenuous exercise, 5 others during walking and 3 patients reported initial pain when walking. The mean time of therapy was 22.5 weeks. As a consequence of trauma, 7 patients changed their jobs. The most important prerequisites for successful surgery are early reduction and stable osteosynthesis. Residual complaints are frequently seen. The rate of avascular necrosis (8 % in fractures of the neck of the talus) and the necessity for arthrodesis was significantly diminished.
    Type of Medium: Electronic Resource
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