Sökning: "Extreme environments"

Visar resultat 1 - 5 av 101 avhandlingar innehållade orden Extreme environments.

1. 1. Extreme environments - Design and human factors considerations

   Författare :Olga Bannova; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Extreme environments; Engineering; Engineer; Architect; Design Planning; Architecture; Multidisciplinary and Trans-disciplinary Design and Planning; Human Factors;

   Sammanfattning : The starting point of this research is based on my experience at SICSA performing research and design for extreme environments, including orbital and lunar planetary facilities, disaster shelters, polar stations and offshore surface and submersible habitats. This thesis explores what aspects and issues of design and planning processes in extreme environments have to be addressed in a similar way and therefore may be used as a basis for further work toward PhD thesis to develop a methodological planning tool or matrix. LÄS MER

3. 2. Exhaled nitric oxide in extreme environments

   Författare :Tryggve Hemmingsson; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Exhaled nitric oxide; hand-held instrument; electrochemical detector; microgravity; International Space Station; high altitude; hypobaric hypoxia; normobaric hypoxia; backdiffusion;

   Sammanfattning : Exhaled nitric oxide (NO) is a useful marker for lower airway inflammation. Since NO was found to be a component of an exhaled breath in the early 1990´s, the Fractional Exhaled Nitric Oxide (FENO 50) measurement is now well accepted among clinicians as a complementary test in the management of asthma. LÄS MER

4. 3. Adjusting to the extreme : Thermal adaptation in a freshwater gastropod

   Författare :Magnus Johansson; Laurila Anssi; Robby Stoks; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Radix balthica; Lake Mývatn; geothermal springs; thermal adaptation; isolation by environment; population structure; gene flow; cogradient variation; AFLP; thermal preference; CTmax; Biologi med inriktning mot populationsbiologi; Biology with specialization in Population Biology;

   Sammanfattning : Temperature is a ubiquitous force influencing biological processes ranging from cellular responses to life span. The thermal environment for many organisms is predicted to change with globally increasing temperatures and studies conducted in natural systems incorporating various evolutionary forces, such as gene flow, is needed. LÄS MER

5. 4. Non-Perturbative Quantum Field Theory in Extreme Environments

   Författare :Per Liljenberg; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; pair production; Bose-Einstein condensation; functional representation; Schwinger model; external field; boson stars; temperature; magnetisation;

   Sammanfattning : The aim of this thesis is to describe some physical systems which can be treated by non-perturbative methods in quantum field theory. In the thesis we study systems described by quadratic Hamiltonians, possibly extended with an external electromagnetic field and/or with a thermal heat bath. LÄS MER

7. 5. Extreme water catalyzed transformations of SiO2, TiO2 and LiAlSiO4

   Författare :Kristina Spektor; Ulrich Häussermann; Gunnar Svensson; Natalia Dubrovinskaia; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; extreme water environments; high pressure polymorphism; hydrous stishovite; titania phase transitions; lithium aluminosilicates; zeolites from glass precursors; hydrous pyroxenes; Materials Chemistry; materialkemi;

   Sammanfattning : The dramatic change in properties of water near its critical point (i.e. T = 374 °C and p = 22.1 MPa, note: 100 MPa = 0. LÄS MER