Sökning: "2019"

Visar resultat 1 - 5 av 3476 avhandlingar innehållade ordet 2019.

1. 1. On the Microstructures and Anisotropic Mechanical Behaviours of Additively Manufactured IN718

   Författare :Dunyong Deng; Johan Moverare; Ru Lin Peng; Jian Zhang; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Additive manufacturing (AM), also known as 3D printing, offers great design flexibility for manufacturing components with complex geometries, and has attracted significant interest in the aero and energy industries in the past decades. Among the commercial AM processes, selective laser melting (SLM) and electron beam melting (EBM) are the two most widely used ones for metallic materials. LÄS MER

3. 2. The Uncemented Cup in Total Hip Arthroplasty : stability, Wear and Osteolysis

   Författare :Volker T C Otten; Sead Crnalic; Kjell G Nilsson; André Stark; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

   Sammanfattning : Background: Artificial hip joint replacement has undergone tremendous development in the past 100 years. In the beginning, complications, such as infection and early loosening, were the rule rather than the exception. Today, complications of any sort are rare during the first decade after the operation. LÄS MER

4. 3. Droplet microfluidics for screening and sorting of microbial cell factories

   Författare :Sara Björk; Helene Svahn Andersson; Håkan Jönsson; Christoph Merten; KTH; []
   Nyckelord :Droplet microfluidics; Cell factories; High-throughput screening; Cell culture; Bioteknologi; Biotechnology;

   Sammanfattning : Cell factories are cells that have been engineered to produce a compound of interest, ranging from biopharmaceuticals to biofuels. With advances in metabolic engineering, the number of cell factory variants to evaluate has increased dramatically, necessitating screening methods with increased throughput. LÄS MER

5. 4. Development of Non-leaching Antibacterial Approaches on Cellulose-based Substrates and Their Mechanisms

   Författare :Chao Chen; Monica Ek; Josefin Illergård; Stefan Spirk; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Layer-by-layer; antibacterial; cellulose materials; Chemical Engineering; Kemiteknik;

   Sammanfattning : The layer-by-layer (LbL) technique is becoming a powerful tool that has been applied in many surface coatings and functionalizations in recent years. It has many advantages including a fast and mild process, the flexibility of choice of substrate, and the easiness to scale-up. LÄS MER

7. 5. Electrochemical evaluation of new materials in polymer electrolyte fuel cells

   Författare :Björn Eriksson; Carina Lagergren; Göran Lindbergh; Rakel Lindström; Piotr Zelenay; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fuel cell; Pt-REM; Alloy catalyst; Multi walled carbon nanotubes; Bipolar plates; Water transport; Bränslecell; Pt-REM; Legerad katalysator; Flerväggade kolnanorör; Bipolära plattor; Vattentransport; Chemical Engineering; Kemiteknik;

   Sammanfattning : Polymer electrolyte fuel cells (PEFC) convert the chemical energy in hydrogen to electrical energy and heat, with the only exhaust being water. Fuel cells are considered key in achieving a sustainable energy sector. The main obstacles to wide scale commercialization are cost and durability. LÄS MER