In this thesis eight papers are presented. They represent development of theory and implementation technique in quantum chemistry, as well applications. The first two papers describe advances in geometry optimization techniques. In the first of these papers a technique for achieving an approximate curvature description of the energy surface is presented and in the next a technique for inter molec

Pseudogenes are very common in the genomes of a wide range of organisms and, although they were originally considered as genetic junk, now several functions have been attributed to them. One important function of pseudogenes, as discussed in this chapter, is to provide material for genetic diversity. This is most prominent in the case of immunological recognition molecules such as immunoglobulins

It has been recently reported that both dynamic movement characteristics, as well as the duration of postures adopted during work, are important in the development of low back pain (LBP). This paper presents a video-based posture assessment method capable of measuring trunk angles and angular velocities in industrial workplaces. The interobserver reliability, system accuracy, and the relationship

This thesis examines the effect of water quality, habitat and species interactions on the occurrence and abundance of stream fishes in southern Sweden. I found that improvements in water quality between the 1960s and 1990s have led to recolonization of streams by brown trout (Salmo trutta L.), stone loach (Barbatula barbatula L.) and eel (Anguilla anguilla L.). The response was greatest for brown

With a new surgical instrument, a haemostatic dissecting tool driven by ultrasonic energy, different surgical procedures is described within the neck, the chest, and abdomen both for open and laparo- and thoracoscopic procedures. Also orthopedic procedures are described. I also wrote the chapter 5: Esophageal resection with the Ultracision blade and shears.

This paper focuses on the performance and efficiency of an HCCI (Homogenous Charge Compression Ignition) engine system running on natural gas or landfill gas for stationary applications. Zero-dimensional modelling and simulation of the engine, turbo, inlet and exhaust manifolds and inlet air conditioner (intercooler/heater) are used to study the effect of compression ratio and exhaust turbine size

Biological invasions offer fertile grounds for studying evolutionary ecology because species’ contact histories are uncharacteristically well-defined. As a result, invasions can be used to gain glimpses of the earliest micro-evolutionary responses of natural populations to new species’ interactions by studying changes in behaviour, physiology or morphology in space and time. Here, the known histor

In this paper the Ertebølle pottery will be in focus, and it serves as an entrance for a short discussion of its role in the time in question, as part of networks, creolization, and in the neolithisation. The interpretation of the meaning of the ceramics and the materiality gives further perspectives to interpret this early pottery handicraft, its technological conditions and artistic design. In t

Emissions of greenhouse gases must be significantly reduced in order to limit the risk of severe climatic change. Such reductions will require a long-term transition of the energy system to one in which energy efficiency improvements, electrification, renewable energy, carbon capture and storage and nuclear energy can play important roles. Energy security will be affected by such a transition. Thi