Sökning: "room control volume"

Visar resultat 11 - 15 av 18 avhandlingar innehållade orden room control volume.

1. 11. Highly efficient optical parametric oscillators in the mid-IR

   Författare :Nicky Thilmann; Valdas Pasiskevicius; Fredrik Laurell; Klaus Boller; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik;

   Sammanfattning : This thesis shows how sources of coherent radiation in the mid-infrared (mid-IR) region can be enhanced. To achieve this, optical parametric oscillators (OPOs) employing improved novel materials, new optical elements, and novel cavity designs have been implemented. LÄS MER

3. 12. Optical and Raman Spectroscopic Studies on H2O at High Pressure

   Författare :Sara Nanna Kristina Sundberg; Peter Lazor; Oleg Kuskov; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; H2O; diamond anvil cell; equations of state; Raman spectroscopy; interferometry; Geovetenskap; Earth sciences; Geovetenskap;

   Sammanfattning : In this thesis, volumetric, optical and vibrational properties of H2O were studied at high pressures by combining techniques of Raman spectroscopy, interferometry and optical imaging. Pressures up to 7 GPa were generated in the diamond anvil cell (DAC), entering the stability fields of liquid water and ices VI, VII and VIII. LÄS MER

4. 13. Laboratory Ventilation Systems: An Analysis of the Function and Flow Stability of Different Ductwork Design Alternatives

   Författare :Madis Laaniste; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; laboratory ventilation; transient flow simulation; fume hood;

   Sammanfattning : One of the prerequisites for high safety in laboratories for chemical and microbiological research is a well-functioning ventilation system. The most typical safety measure in these laboratories is to use a fume hood as a place for activities that can cause dangerous emissions to the room air. LÄS MER

5. 14. Mortality and morbidity after groin hernia surgery : the role of nationwide registers in finding and analysing rare outcomes

   Författare :Hanna Nilsson; Pär Nordin; Ulf Angerås; Hans Stenlund; Andrew Kingsnorth; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; kirurgi; Surgery;

   Sammanfattning : Introduction: Groin hernia surgery is one of the most common surgical procedures world-wide. Although mainly uncomplicated, the large volume of these operations makes it important to consider severe postoperative complications. LÄS MER

7. 15. Qualification of Metal Additive Manufacturing in Space Industry : Challenges for Product Development

   Författare :Christo Dordlofva; Anna Öhrwall Rönnbäck; Peter Törlind; Ola Isaksson; Marco Bertoni; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Additive Manufacturing; Space industry; Product Development; Qualification; Design for Additive Manufacturing;

   Sammanfattning : Additive manufacturing (AM), or 3D printing, is a collection of production processes that has received a good deal of attention in recent years from different industries. Features such as mass production of customised products, design freedom, part consolidation and cost efficient low volume production drive the development of, and the interest in, these technologies. LÄS MER