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Visar resultat 21 - 25 av 208 avhandlingar som matchar ovanstående sökkriterier.

1. 21. Endotracheal Suction a Reopened Problem

   Författare :Birgitta Almgren; Marieann Högman; Mats Sjöquist; Anders Larsson; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Physiology; Mechanical; ventilation; endotracheal; suction; lung; volume; loss; gas; exchange; Fysiologi; Physiology; 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

3. 22. Optimization of confluent jets ventilation with variable airflow

   Författare :Harald Andersson; Mathias Cehlin; Roland Gårdhagen; Högskolan i Gävle; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Confluent jets; Air distribution system; Air supply device; Ventilation performance; Indoor air quality; Thermal comfort; Experimental study; Computational fluid dynamics CFD ; Variable air volume.; confluent jets; luftdistributionssystem; tilluftsdon; ventilationsprestanda; inomhusluftkvalitet; termisk komfort; experimentell studie; Computational fluid dynamics CFD ; variabelflödessystem; Hållbar stadsutveckling; Sustainable Urban Development;

   Sammanfattning : In recent years, applications of confluent jets for design of ventilation supply devices have been widely studied. Similarly, numerous studies have been made on the potential and application of variable air volume (VAV) in order to reduce the energy demand of ventilation systems. LÄS MER

4. 23. The challenge of communication during home mechanical ventilation

   Författare :Katja Laakso; Göteborgs universitet; []
   Nyckelord :Communication; Communicative partner; Health-related quality of life; Home mechanical ventilation; International Classification of Functioning; Disability and Health; Qualitative research design; Disability and Health;

   Sammanfattning : The overall aim of this thesis was to explore and describe experience of communication during home mechanical ventilation (HMV) in adults, thereby contributing to increased knowledge and awareness of issues related to ventilator-supported communication. Mechanical ventilatory support seriously affects speaking and communication. LÄS MER

5. 24. Ventilation and window opening in schools, Experiments and Analysis

   Författare :Birgitta Nordquist; Avdelningen för Installations- och klimatiseringslära; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; heat exchanger efficiency; duct design; balancing; disturbance; tracer gas measurements; analytical model; window opening; single-sided ventilation; ventilation; schools; sensitivity analysis; Building construction; Byggnadsteknik;

   Sammanfattning : The objective of this thesis is to study the application of ventilation in schools buildings. A number of studies of the application of different forms of ventilation are presented. The main part of the thesis focuses on window opening in a classroom. Analytical models for calculation of the air change caused by window airing are proposed. LÄS MER

7. 25. Advances in Ventilation Heat Recovery : An assessment of peak loads shaving using renewables

   Författare :Behrouz Nourozi; Sasan Sadrizadeh; Adnan Ploskic; Carey Simonson; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Peak heat load shaving; renewable energy; ventilation heat recovery; frosting in heat exchangers; Heat transfer; förnybar energi; ventilation värmeåtervinning; frosting i värmeväxlare; värmeöverföring; Byggvetenskap; Civil and Architectural Engineering;

   Sammanfattning : The building sector accounts for approximately 40% of total global energy usage.In residential buildings located in cold climate countries, 30-60% of this energy isused for space heating, 20–30% is lost by discarded residential wastewater, and therest is devoted to ventilation heat loss. LÄS MER