Sökning: "controlled atmosphere"

Visar resultat 1 - 5 av 49 uppsatser innehållade orden controlled atmosphere.

1. 1. Uranium nitride synthesis by gas/gas reaction of UF6 and NH3

   Master-uppsats, KTH/Fysik

   Författare :Serena Ambrosino; [2024]
   Nyckelord :Uranium nitride; synthesis; ammonolysis; uranium hexafluoride; uranium tetrafluoride; ammonia; X-ray diffraction; microscopy; Urannitrid; syntes; ammonolys; uranhexafluorid; urantetrafluorid; ammoniak; röntgendiffraktion; mikroskopi;

   Sammanfattning : This thesis project aims to develop an innovative technique for the production of high-purity uranium nitride (UN) through the ammonolysis of fluorides. The desired objective is to perform a controlled gas/gas reaction between uranium hexafluoride (UF6) and ammonia (NH3) at 800°C. LÄS MER

3. 2. Laboratory starlight simulator for future space-based heterodyne interferometry

   Master-uppsats, Luleå tekniska universitet/Rymdteknik

   Författare :William Karlsson; [2023]
   Nyckelord :Angular resolution; Astronomy; Coherence length; Digital delay lines; Fiber optical circuit; Heterodyne interferometry; Interference; Laboratory starlight simulator; NIR light Near-Infrared ; Optical path differences; Space exploration; Starlight; Testbed environment;

   Sammanfattning : In astronomy, interferometry by ground-based telescopes offers the greatest angular resolution. However, the Earth´s atmosphere distorts the incident wavefront from a celestial object, leading to blurring and signal loss. It also restricts the transmission of specific wavelengths within the electromagnetic spectrum. LÄS MER

4. 3. Heat recovery from vacuum brazing furnaces

   Master-uppsats, Lunds universitet/Avdelningen för Installations- och klimatiseringslära

   Författare :Oliver Robertsson; Rasmus Wikman; [2023]
   Nyckelord :Waste heat; Vacuum furnace; Heat recovery; HVAC; Technology and Engineering;

   Sammanfattning : By partly replacing the use of primary energy sources with waste heat recovery, climate and environmental goals for the future will be closer at hand. This thesis investigates the waste heat potential of Alfa Laval's vacuum brazing furnaces in Ronneby and alternative ways of integrating the furnace's waste heat into the building's HVAC system. LÄS MER

5. 4. 3D CFD Simulations of Hydrogen Engine Combustion

   Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

   Författare :Hao Liu; [2023]
   Nyckelord :Technology and Engineering;

   Sammanfattning : With the trend of decarbonization, the transport sector is exploring possibilities of fossil fuel free solutions. Hydrogen can be a potential fuel for future engine applications. In this work, the concept of H2 HPDI is investigated, where a pilot diesel injection ignites the hydrogen jet. LÄS MER

7. 5. Clearcut tourism : a framework for a forest regeneration initiative based on sustainable forestry and public participation involvement

   Master-uppsats, SLU/Dept. of Landscape Architecture, Planning and Management (from 130101)

   Författare :Tamara Hadházi; [2023]
   Nyckelord :sustainable forestry; landscape architecture; clearcutting; sustainable tourism; ecosystem-based forestry; single-tree selection; clearcut-tourism; sustainable business model; environmental psychology; environmental education; ecosystem services; detached tourism;

   Sammanfattning : Swedish forestry (and forestry in general) is a long-term investment that should last through generations. Some generations are only putting in the money to take care of it and not seeing much profit. Sometimes there is a point, where an individual landowner decides, it is time to get at least some income by clearcutting the forest. LÄS MER