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The aim of the thesis is to develop a model, based on well known physical and empirical formulas, to simulate the heat load on a rink of artificially frozen ice. A comparison of the results from this model and the results from other methods to determine heat load of the rink is made. The model calculates the heat load from convection, long wave radiation from the air temperature and from the sky t

Protection of systems with series compensated lines is considered to be one of the most difficult tasks for relay manufacturers and utility engineers. Protection and control of surrounding circuit elements, particularly transmission line protection, needs to be adapted to the variations introduced by these devices. Fixed series capacitors and thyristor controlled devices introduce harmonics and no

We have investigated the possibility of using a curved dipole antenna inside the mouth for the tongue controlled wireless devices in 2.45GHz ISM band. These devices can be interfaced with the wheelchair or the computer used by the paraplegic patients. Two antenna placement positions have been investigated: in front of the teeth and behind the teeth. The investigations were done through the FDTD si

A combination of acoustic trapping and impedance spectroscopy for micrometer-sized objects is here presented for the first time. Acoustic trapping has proven to be a well-functioning method for non-contact immobilization and positioning of particles or cells in microfluidic channels. The combination with impedance spectroscopy allows for simultaneous electrical measurements on the trapped objects.

Strukturellt unga och N-S-ligt strykande högmetamorfa metadiabaser förekommer i Östra segmentet längs västkusten från Varberg till Kullaberg, och i inlandet mot öster till den Svekonorvegiska fronten. Dessa basiska gångar skär ställvis gnejsiga strukturer i värdbergarterna. Några har välbevarade primärmagmatiska strukturer som exempelvis lagring och “cross-bedding”. Metadiabaserna består av högtry

Problem description: Warehousing is central in order to achieve a competitive supply chain, and considered essential for the success, or failure, of businesses today. In general, warehouses account for a large share of the company logistics costs. Consequently, there is a need for warehouses to operate smoother, faster and more accurate. Within warehousing, the most labor-intensive and costly ware

Abstract The aim of this bachelor thesis is to examine and analyze the existing knowledge concerning how a functional kennel should be constructed for sled dogs living outdoors. I interviewed subjects related to this area such as a construction engineer, a veterinarian, the Swedish supervisory authority and sled dog owners. A calculation model has been used to estimate which thermal aspects affect

Tendons connect muscles to bone and consist of a complex structure of almost parallel collagen fibres embedded in a hydrated matrix. The mechanical behaviour of tendons is viscoelastic and highly non-linear. The Achilles tendon is the largest tendon in the body and it is essential for walking and jumping. It is the most frequently ruptured tendon in humans and today there is no consensus on what i

The fluctuations of the price in the energy market affect the households, firms and the government intuitions. We can perceive the information of the energy market from daily economic news. The entire society is concerned for the events that affect the energy market and the changing prices of the energy resources. It is thus meaningful and interesting to study the risk of the energy market. This p

Bakgrund: Personer med Multipel skleros [MS] kan få olika problem i vardagen som också kan påverka deras förmåga att arbeta. Tidigare studier har visat att arbetslösa personer med MS upplever sämre livskvalitet än de som arbetar. Det finns dock få studier som belyst hur personer med MS upplever betydelsen av att arbeta och vilket stöd som kan behövas för att kunna fortsätta arbeta. Detta är viktig