Sökning: "barrier"

Visar resultat 21 - 25 av 1418 avhandlingar innehållade ordet barrier.

1. 21. Effects of Citric Acid on Starch-Based Barrier Coatings

   Författare :Erik Olsson; Lars Järnström; Caisa Johansson; Julien Bras; Karlstads universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Starch; Citric acid; Cross-linking; hydrolysis; Montmorillonite; WVTR; OTR; Barrier properties; Chemical Engineering; Kemiteknik;

   Sammanfattning : With growing environmental concerns, efforts are made to replace petroleum based products with renewable alternatives. This is particularly evident in the packaging industry, where replacing synthetic polymers with renewable materials is of considerable interest. LÄS MER

3. 22. Design of Microstructures in Thermal Barrier Coatings : A Modelling Approach

   Författare :Mohit Kumar Gupta; Per Nylén; Robert Vaβen; Högskolan Väst; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; thermal barrier coatings; microstructure; thermal conductivity; Young‘s modulus; lifetime; finite element modelling; design; Manufacturing and materials engineering; Produktions- och materialteknik;

   Sammanfattning : Plasma sprayed Thermal Barrier Coating systems (TBCs) are commonly used for thermal protection of components in modern gas turbine application such as power generation, marine and aero engines. The material that is most commonly used in these applications is Yttria Stabilized Zirconia (YSZ) because of this ceramic’s favourable properties, such as low thermal conductivity, phase stability to high temperature, and good erosion resistance. LÄS MER

4. 23. Design of Thermal Barrier Coatings

   Författare :Nicholas Curry; Nicolaie Markocsan; Per Nylén; Matthias Oechsner; Högskolan Väst; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industrial Gas Turbine; Aero Turbine; Thermal Barrier Coating; Atmospheric Plasma Spraying; Suspension Plasma Spraying; Thermal Conductivity; Thermo-cyclic fatigue; Thermal Shock; Manufacturing and materials engineering; Produktions- och materialteknik;

   Sammanfattning : Thermal barrier coatings (TBC’s) are used to provide both thermal insulation and oxidation protection to high temperature components within gas turbines. The development of turbines for power generation and aviation has led to designs where the operation conditions exceed the upper limits of most conventional engineering materials. LÄS MER

5. 24. Full-adoption of digital payment methods? : Barriers and barrier-breakers from a Swedish bank customer perspective

   Författare :Irina Dimitrova; Peter Öhman; Darush Yazdanfar; Niklas Arvidsson; Mittuniversitetet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Cashless society; Digital payment methods; Full-adoption; Barriers; Barrier-breakers; Bank customers; Adopters-accepters; Adopters-resisters; Sweden;

   Sammanfattning : Digitalisation and the Covid-19 pandemic have accelerated the decrease in demand for cash worldwide. This also concerns Sweden, which might be on its way to being the first cashless country in the world. The idea of a cashless society is motivated by various assumed benefits, although it also entails certain inherent challenges. LÄS MER

7. 25. Intestinal Ischemia and Reperfusion Injury - Pathophysiology as basis for novel treatment

   Författare :Zhengwu Sun; Lund Kirurgi; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; organ dysfunction; epithelium; endothelium; adhesion molecules; cytokines; protease inhibitor; Intestine; barrier; Surgery; orthopaedics; traumatology; Kirurgi; ortopedi; traumatologi;

   Sammanfattning : Intestinal ischemia and reperfusion (I/R) is not infrequent in the clinical situation and the intestinal barrier plays an important role in gut barrier function, preventing not at least septic complications and potentially the development of the multiple organ dysfunction syndrome. Mechanisms of intestinal I/R induced gut epithelial and endothelial barrier dysfunction and remote organ dysfunction, as well as potential preventive and therapeutic modes of management were evaluated in the rat. LÄS MER