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The design and properties of a double twin heat conduction microcalorimeter are described. In this instrument two twin microcalorimeters are placed close together, one on top of the other. The size of the instrument is the same as that of a commercial single twin microcalorimeter and each of the twin parts has similar properties as one normal twin microcalorimeter. The cross-talk between the calor
New data on the phylogenetic relationships of various arthropod groups have spurred interesting attempts to reconstruct the evolution of arthropod nervous and visual systems. Some of the relevant new data are cell identities and developmental processes in the nervous and sensory systems, which is particularly useful for reconstructing the evolution of these systems. Here, we focus on the structure
In a previous study by Tucker Cross and Kiiller (2004), a method was developed for describing environmental atmosphere based on Swedish expert evaluations of six multifamily housing areas in southern Sweden. The assessments of these experts were validated by residents using post-occupancy evaluations (POE). The main purpose of that study was to determine if experts could predict environmental qual
The thermal elimination reaction that appears in some polycarbonates has been studied by density functional theory (DFT) and ab initio methods of different levels. This work has been focused in the elimination process of ethyl formate, as a good model of this kind of reaction. Different minima and the transition state have been found to characterize the thermal elimination reaction, and the activa
BACKGROUND: The diagnostic utility of magnetic resonance imaging in dementia workups has increased recently. The basic use is to exclude space-occupying processes in the brain. However, magnetic resonance imaging offers major opportunities for studying atrophy of specific brain areas. A great interest has been put in whether atrophy in the medial temporal lobe can serve as an early diagnostic mark
Popular Abstract in Swedish Denna avhandling handlar till stora delar om fotodynamisk tumörterapi (PDT). PDT har sedan början av förra århundradet undersökts som ett tänkbart alternativ till strålningsbehandling, kirurgi och kemoterapi för behandling av cancertumörer i kroppen. Precis som namnet antyder involverar metoden en fotodynamisk reaktion. För att denna reaktion skall ske behövs tre kompoPhotodynamic therapy (PDT) as a cancer treatment modality relies on the simultaneous presence of three components; light, photosensitiser and oxygen. Once excited by the light, the photosensitiser can interact with oxygen, leading to the formation of toxic oxygen species. These reactive substances induce cellular damage within the irradiated tissue volume. PDT has been investigated for treating ma
In order to compare measurements in different laboratories and with different models and measuring principles a small Round Robin test was suggested. 12 test institutions were able to join the study (with foot model sizes from 254 mm to 275 mm and test boot sizes from 41 to 44). We got also a declaration of interest from 2 other institutes that were not able to carry out the tests now. A database
We study agents situated in partially observable environments, who do not have sufficient resources to create conformant plans. Instead, they generate plans which are conditional and partial, execute or simulate them, and learn to evaluate their quality from experience. Our agent employs an incomplete symbolic deduction system based on active logic and situation calculus for reasoning about action
It is contended in this thesis that the introduction of a legal regime with a rateless structure, subject only to market forces and a rebuttable statutory presumption as to where the rate line of conscience should be drawn, can provide a solution if the rate charged by pawnbrokers is to be regulated. The thesis also shows that a uniform pawn ticket issued as a negotiable document of title, and tra
In an exploratory investigation of personality patterns, Swedish air force pilots (n = 22) and ground officers (n = 14) were tested with the Creative Functioning Test, the Serial Color Word test, and the Spiral After-Effect Technique. The participants also answered open questions about their work and about creativity related items. Achievement ratings were made by their superior officers. An initi
The modern synthesis of genetics with evolution slanted our understanding of evolution and of ourselves by rejecting Darwin’s view of animals as participating in their own evolution. Defining evolution in terms of genetics, the modern synthesis indulges excessive individualism and distorted self-images as self-made. At the same time, such gene-centred thought, evoking images of master molecules ma
A simple method is presented to reduce the contact angle of the photo-resist SU-8. A low contact angle is valuable in micro total analysis systems for the fabrication of micro channels where the capillary pressure is linearly related to the cosine of the contact angle, θ. If the surface of the channel is hydrophilic, the capillary pressure can be used as the only means to direct the liquid through
The thesis is a broad attempt to analyse economic forces behind, and economic rationales for, institutions that constrain the organisation and operation of insurance companies. The basic task is threefold: (i) to develop institutional theory by providing an outline of a transaction cost explanation of the origin of, and the rationale for, institutions that constrain the organisation and the operat
The objective of the CELLION project is radiation research at low doses. The main cell responses to low dose irradiation are bystander effects, genomic instability and adaptive responses. In order to study these effects it is convenient to make the cells addressable in space and time through locking the cell position. A new alternative dish has been developed for irradiation procedures at the Lund
We investigate in detail the effect of electron and light- and heavy-hole state mixing on the transmission coefficients and current-voltage characteristics of interband tunnelling broken-gap heterostructures in the presence of a quantizing magnetic field perpendicular to the interfaces. Double-barrier and barrierless resonant tunnelling structures made from InAs, A1Sb, and GaSb are considered. The
Over the last few decades, increasing rates of change in the structure and function of ecosystems have been brought about by human modification of land cover, of which a major component is vegetation. Metrics derived from linear regression models applied to high temporal resolution satellite data are commonly used to estimate rates of vegetation change. This approach implicitly assumes that vegeta
Cutting tool premature failure, caused by tool fracture and chipping, is a frequent problem in the metal cutting area. For a certain type of cutting tool, correctly identifying its load profile and property profile is very crucial for prediction of the tool premature failure. The most direct way to evaluate the load profile and property profile of a cutting tool is to identify the stress working o
Age-associated and degenerative loss of functional integrity in soft tissues develops from effects of cumulative and subtle changes in their extracellular matrix (ECM). The highly ordered tendon ECM provides the tissue with its tensile strength during loading. As age and exercise collude in the high incidence of tendinopathies, we hypothesized that aged tendons fail due to cumulative damage result
