Sökning: "gas exchange"

Visar resultat 1 - 5 av 222 avhandlingar innehållade orden gas exchange.

  1. 1. Gas Exchange over Aquatic Interfaces and its Importance for Greenhouse Gas Emission

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Jovana Kokic; Uppsala universitet.; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; gas exchange; lake; stream; lake sediment; headwaters; carbon dioxide; methane; greenhouse gas emission; carbon; turbulence; Biology with specialization in Limnology; Biologi med inriktning mot limnologi;

    Sammanfattning : Aquatic ecosystems play a substantial role in global cycling of carbon (C), despite covering only about 4% of the earth surface. They emit large amounts of greenhouse gases (GHG) to the atmosphere, comparable to the amount of C stored annually in terrestrial ecosystems. In addition, C can be buried in lake sediments. LÄS MER

  2. 2. Flow measurements related to gas exchange applications

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Fredrik Laurantzon; KTH.; KTH.; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Flow meters; vortex flow meters; compressible flow; pulsating flow; hot-wire anemometry; cold-wire anemometry; time resolved measurements; wavelet analysis;

    Sammanfattning : This thesis deals with flow measuring techniques applied to steady and pulsating gas flows relevant to gas exchange systems for internal combustion engines. Gas flows in such environments are complex, i.e. they are inhomogeneous, three-dimensional, unsteady, non-isothermal and exhibit significant density changes. LÄS MER

  3. 3. Gas exchange with a reflecting system for inhalational anaesthesia

    Detta är en avhandling från Anaesthesiology and Intensive Care

    Författare :Louise Walther Sturesson; Lunds universitet.; Lund University.; [2013]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; anesthetic conserving device; inhalational anaesthesia; carbon dioxide; Gas exchange;

    Sammanfattning : Popular Abstract in Swedish Anesthetic Conserving Device (AnaConDa®) är ett nytt, kommersiellt tillgängligt, hjälpmedel för att ge narkosgaser. AnaConDa® är en förgasare och återandningsfilter, vilken ansluts till patientens andningstub under operation eller intensivvård. LÄS MER

  4. 4. Endotracheal Suction a Reopened Problem

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Birgitta Almgren; Uppsala universitet.; [2005]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Physiology; Mechanical; ventilation; endotracheal; suction; lung; volume; loss; gas; exchange; Fysiologi; MEDICINE Physiology and pharmacology Physiology; MEDICIN Fysiologi och farmakologi Fysiologi;

    Sammanfattning : During mechanical ventilation, patients are connected to the ventilator by an endotracheal tube. The tube needs to be cleaned from mucus by suction, which can cause negative effects such as lung collapse, hypoxemia and desaturation. LÄS MER

  5. 5. Gas Exchange in the Normal Lung Experimental studies on the effects of positive end-expiratory pressure and body position

    Detta är en avhandling från Linköping : Linköping University Electronic Press

    Författare :Mats J. Johansson; Linköpings universitet.; Linköpings universitet.; Östergötlands Läns Landsting.; [2014]

    Sammanfattning : BACKGROUND: The principal function of the lung is gas exchange requiring adequate ventilation and perfusion at the level of the alveoli. The efficiency of gas exchange is depending on the distributions of regional ventilation (V) and pulmonary blood flow (Q) and their correlation. LÄS MER