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  • 1
    ISSN: 1573-5117
    Keywords: Primary productivity ; Community respiration ; Methods ; Streams
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Carbon dioxide and oxygen exchange procedures for measuring community metabolism (two open stream methods and three chamber methods) were compared on the same reach of a third-order stream. Open stream methods were complicated by high diffusion rates and yielded net community primary productivity estimates lower than those obtained with chamber methods. Chamber methods yielded variable productivity and respiration data. However, when normalized for chlorophyll a, productivity estimates from the chamber methods were within an expected range for the system. Balances of photosynthesis and respiration from the chamber methods were similar between methods and indicated that autotrophic or heterotrophic processes could dominate the system. Considerations in applying the various procedures are discussed.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 361 (1983), S. 213-220 
    ISSN: 1435-2451
    Keywords: Colon injuries ; Primary closure ; Exteriorisation ; Hartmanns' procedure ; Colonverletzung ; primäre Naht ; Vorverlagerung ; Hartmannsche Operation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die Kombination von Beckenfraktur und Darmverletzung tritt in 0,05 des stationären Gesamtkrankengutes auf. Bei Beckenfrakturen sind die Hohlorgane Blase/Urethra in 14 %, Dünndarm in 6 %, Dickdarm in 5 % und Gefäße in 3 % mit verletzt. Männer stellen zu 75 % dieses Krankengut. Die Komplikations- und Letalitätsrate hängt ganz überwiegend vom Verteilungsmuster des Polytraumatisierten ab, aus ihnen stammen überwiegend die Darmverletzten. Verkehrsunfälle als Verletzungsursache überwiegen (ca. 70 %). In der Diagnostik der intraabdominellen Blutung hat die Lavage die größte Bedeutung. Dickdarmperforationen können gezielt durch trijodierte Kontrastmittel nachgewiesen werden. Innerhalb der 6 h-Grenze wird zur Versorgung der Dickdarmverletzung die primäre Naht bevorzugt, jenseits der 6 h-Grenze die Hartmannsche Operation bei intraperitonealer bzw. die Colostomie und Ausschaltung bei retroperitonealer Lage.
    Notes: Summary The combination of pelvic fractures and intestinal injuries occured in 0.05 % in all the patients of our hospital. Apart from pelvic fractures we found injuries of the urine bladder and urethra in 14 %, of the small intestine in 6 %, of the large intestine in 5 % and 3 % vascular lesions. 75 % of the injured patients are males. Morbidity and mortality rates depend on the combination of the injuries in polytraumatised patients among whom we found the patients with intestinal injuries. 70 % of the injured patients had blunt abdominal trauma after road accidents. The peritoneal lavage is most important for the diagnosis of intraabdominal bleeding. Colon perforations are effectively demonstrated by trijodized contrast mediums. Within a six hour time limit we prefer the primary closure. Later we perform Hartmanns' procedure in intraperitoneal lesions and colostomy in retroperitoneal lesions.
    Type of Medium: Electronic Resource
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