Sökning: "drainage duration"

Visar resultat 1 - 5 av 15 avhandlingar innehållade orden drainage duration.

  1. 1. Surgical treatment strategies of chronic subdural hematoma

    Författare :Andreas Bartley; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; chronic subdural hematoma; irrigation; recurrence; temperature; drainage time; drainage duration; surgery;

    Sammanfattning : Background: A subdural collection of old blood is called a chronic subdural hematoma (cSDH). A cSDH of sufficient volume becomes symptomatic and neurosurgical evacuation is then necessary. The recurrence rate (5-21%) after surgery is high and evidence-based guidelines regarding the optimal treatment to diminish recurrence is lacking. LÄS MER

  3. 2. Green Urban Drainage Infrastructure : Hydrology and Modelling of Grass Swales

    Författare :Hendrik Rujner; Maria Viklander; Günther Leonhardt; Jiri Marsalek; Barraud Sylvie; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; VA-teknik; Urban Water Engineering; Centrumbildning - Centrum för dagvattenhantering DRIZZLE ; Centre - Centre for Stormwater Management DRIZZLE ;

    Sammanfattning : The management of urban runoff has evolved along with the advancement of understanding of runoff environmental impacts. Besides the impacts on water quality in the receiving waters, the impacts on the urban hydrologic regime include reduced infiltration by the sealing of pervious land, reduced evapotranspiration by removal of vegetation, and the resulting increase of stormwater runoff peaks and volumes causing flooding, and ultimately degradation of receiving waters. LÄS MER

  4. 3. Urban drainage and climate change : impact assessment

    Författare :Karolina Berggren; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; VA-teknik; Urban Water Engineering;

    Sammanfattning : According to the Intergovernmental Panel on Climate Change (IPCC, 2007), the global mean temperature has increased by 0,7 °C during the last 100 years and, as a consequence, the hydrological cycle has intensified with, for example, more intense rainfall events. As urban drainage systems have been developed over a long period of time and design criteria are based upon climatic characteristics, these changes will affect the systems and the city accordingly. LÄS MER

  5. 4. Climate Change Effects on Rainfall and Management of Urban Flooding

    Författare :Arun Rana; Avdelningen för Teknisk vattenresurslära; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Climate Change; Extreme Events; Intensive Rainfall; Urban Drainage; Intensity-Duration-Frequency; Statistical analysis; Flood Management;

    Sammanfattning : Flooding in urban basins is intensifying due to increasing urbanization and climate change and variability. This thesis presents how the effects of climate change and high-intensive rainfall on the urban drainage system and management of flooding in urban areas of were studied in Mumbai, India and Southern Sweden, including Skåne and Gothenburg. LÄS MER

  7. 5. Epiphora : impact on vision, outcome of lacrimal surgery and investigations with ultra-high-frequency ultrasound

    Författare :Elin Bohman; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Epiphora is a common condition that often receives little attention. Excessive tear production creates an irregular and ever-changing ocular surface, affecting refraction and reducing vision. However, in a standard test situation the visual acuity is seldom affected, leading to the misinterpretation that epiphora is a minor problem. LÄS MER