Search results

The main objectives with this investigation are firstly to compare important parameters of a capacitive micromachined ultrasonic transducer (cMUT) for air applications with a corresponding piezoelectric ultrasonic transducer. Secondly, to characterise the cMUT's radiation field using light diffraction tomography. The cMUTs consist of a silicon backplate with small pyramid-shaped cavities and a met

Popular Abstract in Swedish Förebyggande av hjärtkärlsjukdom har varit en utmaning för medicinsk forskning under flera decennier. Viktiga frågeställningar om såväl screeningmetodik som risk-faktor intervention söker fortfarande sitt svar och har i sig betydelse för både samhällsmedicin och klinisk verksamhet. Målsättningen för denna studie var att undersöka möjligheten för läkare och sjuksköterskoCardiovascular disease prevention has been a challenge for research for decades. The studies of this thesis were designed to investigate the role of health professionals in everyday clinical work based upon the concept of comprehensive primary care consultation. Routine check-up of blood pressure was the basis for the inclusion in an opportunistic screening for hyperchol-esterolaemia. Additionally

In this work, a numerical study has been performed to simulate the heat transfer and fluid flow in a transonic high-pressure turbine stator vane passage. Four turbulence models (the Spalart-Allmaras model, the low-Reynolds-number realizable k-ε model, the shear-stress transport (SST) k-ω model and the v²-f model) are used in order to assess the capability of the models to predict the he

In the last decades, the growing competitiveness of the market has continuously driven the forming companies to highly optimize their products regarding offered performance at minimum cost. In order to achieve better products, studies where conducted with different material models when simulating the forming process of titanium. The material is often used in heat exchanger applications. Titanium h

In this Licentiate Dissertation presents a new model for selecting environmental performance indicators in order to improve environmental management. The suggested Total Cost Indicators support a support a preventive approach to environmental management, where environmental issues are addressed before they arise - and before they become costs. The method of selecting indicators builds on earlie

Popular Abstract in Swedish Läkning av achilles-senrupturer är idag en långdragen process, som ofta tar flera månader innan senan är fullt funktionsduglig. Syftet med studierna är att förbättra senläkningen i samband med achillesrupturer. Bone Morphogentic Proteins (BMP) är främst kända för att stimulera benläkning och bentillväxt. De lokala förhållandena har dock visat sig ha stor betydelse för cWe wanted to improve tendon healing by adding a growth factor. Bone Morphogenetic Proteins (BMPs) are well known to stimulate bone healing and bone formation. The local environment is of major importance for cell differentiation after a BMP has been added. Cartilage Derived Morphogenetic Proteins (CDMPs) -1, -2 and -3 (BMP 14, 13 and 12 or GDF 5, 6 and 7) form a subgroup in the BMP-family and are

This chapter outlines an innovative and collaborative design research project that connects New Zealand SME manufacturers with advanced design thinking about affective design. This project was developed and implemented by the centre for affective design research (Affect) at Massey University. Design researchers and five NZ companies have collaborated to foster ‘design-for-desirability’ thinking an

Ultra-wideband (UWB) communication is a potential technique for future high-speed networks. In this paper, we investigate low complexity signal detection approaches for OFDM based UWB systems. In particular, we develop practical approaches for channel estimation and interference suppression. Computer simulation results show that these techniques can be effectively used in OFDM based UWB systems fo

Popular Abstract in Swedish Vilken typ av mat vi konsumerar och hur den produceras har stor inverkan på vår miljö och hälsa. Den globala livsmedelsproduktionen ockuperar drygt en tredjedel av världens markyta, står för runt 30 % av den totala klimatpåverkan och är identifierad som ett av de största hoten mot vår miljö. Vi lever också i en värld där nästan en miljard människor går hungriga och ännuFood production and consumption are key drivers of environmental pressures and essential factors in the promotion and maintenance of health. Production of food occupies more than 1/3 of global land areas and is estimated to be responsible for some 30% of global greenhouse gas emissions. At the same time, we live in a world where nearly one billion people go hungry and even more people suffer from

Throughout this thesis, samples of various materials with applications in energy converting devices have been prepared by focused ion beam machining and investigated by transmission electron microscopy. Energy converting devices can be solar cells or light emitting diodes, which turn light into electricity or vice versa. They can also be fuel cells or electrolyzer cells, which turn chemical energy

[abstract missing]