Sökning: "air samples"

Visar resultat 21 - 25 av 182 uppsatser innehållade orden air samples.

1. 21. Investigation of high temperature stability of additive manufactured austenitic stainless steels for space applications

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Materialvetenskap

   Författare :Belén Alonso Rancurel; [2023]
   Nyckelord :austenitic stainless steel; additive manufacturing; high temperature corrosion; high temperature stability;

   Sammanfattning : Additive manufacturing (AM) techniques are being studied for their application in the aerospace industry. Numerous benefits come from the already in shape final piece, which needs reduced amount of prime material for its production and can have its shape numerically optimized for weight reduction. LÄS MER

3. 22. Effect of powder spray drying on catalyst formulation in tablet form

   Master-uppsats, Lunds universitet/Kemiteknik (CI)

   Författare :Kajsa Wahlgren; [2023]
   Nyckelord :Spray dryer; Catalyst; Powder; Flowability; Chemical engineering; Technology and Engineering;

   Sammanfattning : Heterogenous catalysts consist of a large surface area support material applied with the catalytic active phase, and the activity of a catalyst is often correlated to the surface area per volume. Support materials often need to be processed further to be optimal for specific processes. LÄS MER

4. 23. A plant-based milk powder that functions as a substitution for regular milk powder

   Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

   Författare :Manon Scheffers; [2023]
   Nyckelord :spray drying; pant- based milk powder alternative; pea protein; food application; food engineering; Technology and Engineering;

   Sammanfattning : This project tested the potential of plant based milk powders to function as an animal-based milk powder by testing them on multiple characteristics. The powders were produced using spray drying techniques, obtained using formulations differentiating in protein amount, ratio of maltodextrin:sucrose and two different protein sources. LÄS MER

5. 24. Geological characterization of rock samples by LIBS and ME-XRT analytical techniques

   Master-uppsats, Luleå tekniska universitet/Geovetenskap och miljöteknik

   Författare :Nsioh Elvis Nkioh; [2022]
   Nyckelord :geological characterization; analytical techniques; LIBS; ME-XRT; SEM; element maps; SEM-EDS; secondary electrons; rock samples; automated ore microscopy; SEM-Zeiss Merlin; element weight percentages; element oxide percentages; scanning techniques; analytical methods; laser induced breakdown spectrometry; multi energy x-ray transmission; scanning electron microscope; carbon coating; mineralogical classification; element composition; rock chemistry; rock chemical composition;

   Sammanfattning : One of the major challenges in earth sciences and mineral exploration has been to determine with high accuracy and at a fast rate the elemental composition as well as the general chemistry of a rock sample. Many analytical techniques e.g. LÄS MER

7. 25. Prolongation of shelf life of minimally processed spinach by combining vacuum impregnation and electric field treatments

   Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

   Författare :Sophia Leffler; [2022]
   Nyckelord :spinach; pulsed electric field; moderate electric field; reversible electroporation; vacuum impregnation; shelf life; metabolic activity; respiration; food engineering; Agriculture and Food Sciences;

   Sammanfattning : A continuous growth of the world population raises the importance of preserving food resources while maintaining their nutrient value. Leafy vegetables such as spinach are a food category which decay quickly, and a large amount ends up as food waste. LÄS MER