Essays about: "sublimation"

Showing result 1 - 5 of 26 essays containing the word sublimation.

1. 1. Influence of supercritical carbon dioxide (scco2) dyeing parameters on color fastness of polyester fabric dyed with disperse dye : A study towards minimizing the energy consumption of polyester (pet) fabric dyeing with azo disperse dye

   University essay from Högskolan i Borås/Akademin för textil, teknik och ekonomi

   Author : Tapas Das; [2023]
   Keywords : Supercritical fluid dyeing; polyester PET fabric; coranger orange PE3330; color fastness; ideal dyeing conditions; eco-friendly;

   Abstract : Amid growing environmental concern and continuous depletion of natural resources (such as water), the textile industry is constantly searching for sustainable production process. Traditional dyeing processes, notorious for their enormous water consumption, have led society to search alternative dyeing method. READ MORE

3. 2. Investigating surface spring snow : Changes in the isotopic composition and conductivity along an orographic precipitation gradient in northern Fennoscandia

   University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

   Author : Sara Andersson; [2023]
   Keywords : stable isotopes; snow; precipitation; hydrology; orography; earth science;

   Abstract : Stable isotopes of oxygen (O18) and hydrogen (H2) are used as proxies of past climates when ice preserved in the polar icecaps. The main assumption when doing paleoclimatic reconstructions using these isotopes is that the isotopic composition of the snow that turned into ice reflect the present temperature of the planet during deposition. READ MORE

4. 3. Sublimation temperature prediction of OLED materials : using machine learning

   University essay from Uppsala universitet/Analys och partiella differentialekvationer

   Author : Niklas Norinder; [2023]
   Keywords : Semiconductors; OLED; machine learning; vapor deposition; sublimation; molecular property prediction; regression; ensemble learning; deep learning;

   Abstract : Organic light-emitting diodes (OLED) are and have been the future of display technology for a minute. Looking back, display technology has moved from cathode-ray tube displays (CRTs) to liquid crystal displays (LCDs). Whereas CRT displays were clunky and had quite high powerconsumption, LCDs were thinner, lighter and consumed less energy. READ MORE

5. 4. Low-Temperature Thermal Control System for an Environmental Chamber

   University essay from Luleå tekniska universitet/Rymdteknik

   Author : Aleksis Pauls Lindemanis; [2022]
   Keywords : Space simulator; environmental chamber; thermal control design; thermal conductivity in bolted joints; thermal simulations; Mars climate; Carbon dioxide sublimation and deposition;

   Abstract : In spite of significant reduction of cost associated with launching a spacecraft, launching deep space exploratory missions are yet to be accessible to most universities and researchers. A solution to testing scientific hypotheses and verifying technologies for space is the use of environmental chambers, also know as space simulators, - vacuum chambers, which replicate the space environment. READ MORE

6. 5. Determination of Mass- and Heat Transfer Coefficients for Computer Modelling of Pharmaceutical Freeze-Drying

   University essay from Lunds universitet/Livsmedelsteknik och nutrition (master)

   Author : Linnea Gustafsson; [2021]
   Keywords : Freeze-drying; Mass- and Heat Transfer; Pharmaceutical production; Simulation; MATLAB; Pharmaceutical technology; Technology and Engineering;

   Abstract : This thesis work deals with the determination of mass- and heat transfer coefficients for pharmaceutical vial freeze-drying and the one-dimensional steady state computer modelling of primary drying. The overall heat transfer coefficient K_V for the vial/freeze-dryer system was successfully determined using a gravimetric method. READ MORE