Sökning: "Rolling Resistance"

Visar resultat 21 - 25 av 58 avhandlingar innehållade orden Rolling Resistance.

1. 21. Towards 6 Degrees of Freedom Seakeeping Simulations Using a Fully Nonlinear Potential Flow Method

   Författare :Francesco Coslovich; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ship Motions; Added Resistance; Boundary Element Method; Fully Nonlinear Potential Flow; Seakeeping;

   Sammanfattning : In recent years, the International Maritime Organization introduced a new set of rules in order to try to reduce emissions of ships by improving their efficiency. To assess the energy efficiency of a new ship, the regulations require to estimate the Energy Efficiency Design Index (EEDI), which represent the amount of Carbon Dioxide produced per mile in relation to the amount of cargo carried, and verify that it is smaller than a prescribed value. LÄS MER

3. 22. Condition monitoring of railway vehicles : a study on wheel condition for heavy haul rolling stock

   Författare :Mikael Palo; Thomas Robertsson; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Drift och underhållsteknik; Operation and Maintenance;

   Sammanfattning : A railway is an energy efficient mode of transport as it uses the low resistance contact between wheel and rail. This contact is not frictionless and causes wear on both surfaces. The wheel-rail guidance is made possible by the shapes of wheel and rail profiles. LÄS MER

4. 23. Development of Electrical Readouts for Amplified Single Molecule Detection

   Författare :Camilla Russell; Mats Nilsson; Björn Högberg; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Rolling circle amplification; metallization; electrical DNA detection; magnetic nanoparticles; dielectrophoresis; boranephosphonate modified nucleotides; DNA elongation; Biokemi; Biochemistry;

   Sammanfattning : Molecular diagnostics is a fast growing field with new technologies being developed constantly. There is a demand for more sophisticated molecular tools able to detect a multitude of molecules on a single molecule level with high specificity, able to distinguish them from other similar molecules. LÄS MER

5. 24. Digital Electrical DNA Sensing

   Författare :Maoxiang Guo; Wouter van der Wijngaart; Fredrik Westerlund; KTH; []
   Nyckelord :DNA detection; thiol-ene-epoxy; rolling circle amplification; digital measurement; DNA stretching; microwell-array; gold nanowires; electrical measurement; specificity; limit of detection; liquid storage; disease diagnosis; lab-on-a-chip; point-of-care.;

   Sammanfattning : Molecule detection is a workhorse in life sciences and medicine, for example in cancer diagnosis and virus and bacterial detection. DNA analysis can provide vital information about the state of a host organism and its medical and health condition. LÄS MER

7. 25. Low-friction and wear-resistant carbon nitride coatings for bearing components grown by magnetron sputtering

   Författare :Konstantinos Bakoglidis; Grzegorz Greczynski; Lars Hultman; Susann Schmidt; Witold Gulbinski; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Carbon nitride; magnetron sputtering; physical vapor deposition; coatings; bearings; rolling contact fatigue; adhesion; friction; wear; transmission electron microscopy; scanning electron microscopy; x-ray photoelectron spectroscopy; coatings tribology; nanotribology;

   Sammanfattning : The scope of this thesis is the investigation of magnetron sputtered carbon nitride coatings suitable for roller bearing components. The research field of tribology of bearings focuses on minimizing friction between components by improving the lubricants. LÄS MER