Sökning: "Christian Johansson"

Visar resultat 6 - 10 av 41 avhandlingar innehållade orden Christian Johansson.

1. 6. High frequency electronic packaging and components : characterization, simulation, materials and processing

   Författare :Christian Johansson; Mats Robertsson; Li-Rong Zheng; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Dielectric loss; high frequency electrical characterization; microwave circuits; multilayer thin film technology; ORMOCER®; permittivity; printed diode; sequential build-up; silicone elastomer; Signal processing; Signalbehandling;

   Sammanfattning : Electronic packaging continues to move towards improved performance and lower cost. Requirements of higher performance, reduced size, weight and cost of both high density interconnects and high frequency devices have led to the search for new materials, material combinations, methods, processes and production equipment. LÄS MER

3. 7. Interaction Between Microgels and Oppositely Charged Proteins

   Författare :Christian Johansson; Per Hansson; Brian Saunders; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; microgel; protein; uptake; distribution; core-shell; colloidal stability; Physical chemistry; Fysikalisk kemi; Physical Chemistry; fysikalisk kemi;

   Sammanfattning : This thesis reports on interactions between microgels and oppositely charged proteins. Two types of negatively charged microgels are investigated: poly(acrylic acid) microgels of 60-80 µm in diameter, and colloidal poly(NIPAM-co-acrylic acid) microgels of around 1 µm in diameter. LÄS MER

4. 8. Knowledge engineering in the virtual enterprise : exploring a maturity-based decision support

   Författare :Christian Johansson; Tobias Larsson; Andreas Larsson; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Knowledge Engineering; Knowledge Maturity; Functional Product Development; Decision Making; Funktionella produkter;

   Sammanfattning : In product development, lead-time reduction, cost reduction, and quality improvement are issues that companies want to improve on to increase competitiveness. One recent approach to reach this - particularly in the aerospace industry where the complexity of product offers is steadily increasing - is to manage risk by forming virtual enterprises. LÄS MER

5. 9. Knowledge maturity as decision support in stage-gate product development : a case from the aerospace industry

   Författare :Christian Johansson; Andreas Larsson; Marco Bertoni; Dave Randall; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Knowledge Maturity; Knowledge Management; Stage-Gate; Decision Support; Product Development; Product-Service Systems; Aerospace; Funktionella produkter;

   Sammanfattning : In today’s fast-paced industry where fight for market share is fierce and reaching the market ahead of competition imperative, product development is a target for lead-time reductions. In this context, in product development in stage-gate processes, decisions need to be made even though knowledge and information are scarce and flawed. LÄS MER

7. 10. Pressure and Solidosity Profiles in Cake Filtration

   Författare :Christian Johansson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; lignin; pressure and solidosity measurements; ethanol; constitutive relationships; solid-liquid separation; cake build-up;

   Sammanfattning : Filtration is an important unit operation in theseparation of liquids from solids. The aim of this work was toinvestigate filtration properties of lignin sludge obtained in theproduction of fuel ethanol from spruce wood. LÄS MER