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  • Electronic Resource  (4)
  • Prognostic parameters  (2)
  • windbreaks  (2)
  • 1
    Electronic Resource
    Electronic Resource
    A model to evaluate windbreak protection efficiency (1995)
    Springer
    Agroforestry systems 29 (1995), S. 191-200 
    Details
    ISSN: 1572-9680
    Keywords: windbreaks ; shelterbelt ; wind ; model ; specific protection efficiency
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The effectiveness of windbreaks in windspeed reduction is often evaluated without regard to the objects to be protected. In fact, many objects may have different sensitivities to wind and often require different degrees of wind protection. Since commonly used indexes do not consider the sensitivity to wind, a concept of specific protection efficiency is developed. A critical windspeed is used to represent the sensitivity of each object. Windspeeds greater than this value are considered damaging. A dimensionless protection index is defined to evaluate windbreak efficiency. The maximum index value is 1 for the highest protection, and the index is negative when sheltered windspeed is greater than the critical windspeed. This index can be compared, summed, and averaged across different windbreaks, objects, and leeward locations. A sample of critical windspeed values was compiled from the literature. The index was evaluated using actual wind data measured under both sheltered and open conditions. The results indicated that the index can be used for evaluating windbreak effectiveness in terms of objects protected under various conditions. This model could be used as a tool for windbreak-related research and policy making.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00704868
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    152. Der Stellenwert der Brustwandresektion in der Chirurgie von Lungenmetastasen extrathorakaler Tumoren (1987)
    Springer
    Langenbeck's archives of surgery 372 (1987), S. 813-819 
    Details
    ISSN: 1435-2451
    Keywords: Lung metastasis ; Chest wall resection ; Chemotherapy ; Prognostic parameters ; Lungenmetastasen ; Brustwandresektion ; Chemotherapie ; Prognostische Faktoren
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei 21 Patienten fand sich nach Resektion von Lungenmetastasen und befallener Brustwand unabhängig von der Grösse der Brustwandinfiltration eine mediane Überlebenszeit von 11 Monaten. Nur 1 Patient mit Hodenteratom-Metastasen überlebte 5 Jahre und ist tumorfrei. Die 30-Tage-Letalität betrug 0%. Hauptindikation sind Komplikationen, wie Exulceration und Schmerz. Trotz schlechter Prognose kann eine Lebensverlängerung bei verbesserter Lebensqualität erreicht werden. In seltenen Fällen ist nach Tumorreduktion bei chemotherapiesensiblen Tumoren eine Heilung möglich.
    Notes: Summary In 21 patients after combined chest wall and lung metastasis resection a median survival time of 11 months was found independent of the degree of the chest wall infiltration. Only 1 patient with metastasis from a testicular teratoma survived 5 years and is tumor free. There was no 30-day-lethality. The main indications are complications such as exulceration and pain. In spite of the poor prognosis a prolongation of survival time with improved quality of life may be achieved. In rare cases cure is possible by combined tumor reductive surgery and chemotherapy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01297936
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    267. Der spontanverlauf als beurteilungskriterium der therapie von lebermetastasen colorectaler carcinome (1987)
    Springer
    Langenbeck's archives of surgery 372 (1987), S. 891-891 
    Details
    ISSN: 1435-2451
    Keywords: Liver metastasis ; Natural history ; Prognostic parameters ; Evaluation of therapeutic results ; Lebermetastasen ; Spontanverlauf ; Prognostische Faktoren
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die Ergebnisse therapeutischer Massnahmen bei Lebermetastasen können nur unter Berücksichtigung des Spontanverlaufes dieser Erkrankung beurteilt werden. Dazu bedarf es einer Prognoseberechnung therapeutisch relevanter Gruppen. Für Patienten, die nach heute gültigen Kriterien für eine Therapie in Frage kommen, fand sich eine mediane Überlebenszeit von 11 Monaten und eine drei-Jahres-Überlebensrate von 17%. Hieran wird die Effektivität therapeutischer Verfahren zu messen sein.
    Notes: Summary The therapeutic results in treatment of liver metastasis can only be judged with regard to the natural history of the disease for which the prognosis of therapeutically relevant groups must be evaluated. The median survival time was 11 months and the probability of 3-year survival 17% for patients who today are potential candidates for the various therapeutic procedures available. These results must be taken into consideration as a measure of the effectiveness of the therapies applied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01298051
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    The relationship between open windspeed and windspeed reduction in shelter (1995)
    Springer
    Agroforestry systems 32 (1995), S. 297-311 
    Details
    ISSN: 1572-9680
    Keywords: relative windspeed reduction ; shelterbelt ; windbreaks ; windspeed
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Windspeed reduction in shelter is generally expressed relatively and is usually assumed to be independent of open windspeed. The purpose of this study was to re-examine the relationship between open windspeed and windspeed reduction in shelter using windspeeds and wind directions measured for two windbreak systems at various distances from the windbreaks and with three windbreak porosities. Optical windbreak porosities were estimated from digitized color photographs using an intelligent (trainable) image processing program. Relative windspeed reduction in shelter was found to be related to the open windspeed. There existed a threshold windspeed at approximately 5 m s−1, below which relative windspeed reduction varied but generally decreased as the open windspeed increased. Above the threshold windspeed, open windspeed did not have an effect on relative windspeed reduction in the sheltered zone. Using the threshold windspeed reduction, the authors propose an index to evaluate the effectiveness of a windbreak for the overal windspeed protection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00711717
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    Paper (German National Licenses)
    Fulltext
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