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Occupational risk factors for small bowel carcinoid tumor: A European population-based case-control study

Small bowel carcinoid tumor (SBC) is a rare disease of unknown etiology bill with all age-, sex-, and place-specific occurrence that may indicate an occupational origin. A European multicenter population-based case-control study was conducted from 1995 through 1997. Incident SBC cases between 35 and 69 years of age (n = 101) were identified, together with 3335 controls sampled from the catchment a

Inflammation and cholesterol

Atherosclerosis develops as a result of a chronic arterial inflammation and intimal Fibrosis. The disease represents in many respects a vascular repair process activated in response to injury caused by toxic breakdown products of aggregated and oxidized lipoproteins. The initial response of the artery involves expression of adhesion molecules and recruitment of leukocytes. Degenerated lipoproteins

Logistics in the life cycle of Photosystem IIlateral movement in the thylakoid membrane and activation of electron transfer

Due to its unique ability to split water, Photosystem II (PSII) is easily accessible to oxidative damage. Photoinhibited PSII centres diffuse laterally from the grana core region of the thylakoid membrane to the stroma lamellae in order to allow replacement of damaged proteins and cofactors. The 'new born' PSII centres in this region are characterized by the absence of the water splitting capacity

How do birds' tails work? Delta-wing theory fails to predict tail shape during flight

Birds appear to use their tails during flight, but until recently the aerodynamic role that tails fulfil was largely unknown. In recent years delta-wing theory, devised to predict the aerodynamics of high-performance aircraft, has been applied to the tails of birds and has been successful in providing a model for the aerodynamics of a birds tail. This theory now provides the conventional explanati

Support for Ad-Hoc applications in ubiquitous computing

This thesis presents work within the area of ubiquitous computing, an area based on a vision of computers blending into the background. The work has been done within the EU project PalCom that introduces palpable computing. Palpable computing puts a new perspective on ubiquitous computing, by focusing on human understandability. The thesis goals are to allow for ad-hoc combinations of services an

Endogenous nitric oxide as a physiological regulator of vascular tone in cat skeletal muscle during haemorrhage

The problem whether endogenous nitric oxide (NO) may serve as a true physiological regulator of vascular tone in vivo was approached by testing its role during graded acute haemorrhage with the aid of the nitric oxide synthase (NOS) inhibitor L-NAME. The study was performed on the vascular bed of cat skeletal muscle with a technique permitting quantitative recordings of vascular resistance in the

Prognostic significance of elevated creatine kinase MB after coronary bypass surgery and after an acute coronary syndrome: Results from the GUARDIAN trial

Objective: To determine if the correlation between magnitude of creatine kinase-myocardial band release after coronary artery bypass surgery and 6-month mortality is comparable to that of patients admitted with an acute coronary syndrome. Methods: The GUARDIAN trial tested the efficacy of cariporide, an Na+/H+ exchange inhibitor, on reduction of myocardial ischemia or death in high-risk patients.

Navigating towards sustainable development: A system dynamics approach

Traditional fragmented and mechanistic science is unable to cope with issues about sustainability, as these are often related to complex, self-organizing systems. In the paper, sustainable development is seen as an unending process defined neither by fixed goals nor by specific means of achieving them. It is argued that, in order to understand the sources of and the solutions to modern problems, l

Diabetes duration may modify the association between genetic variation in the glycoprotein la subunit of the platelet collagen receptor and risk of severe diabetic retinopathy: a working hypothesis

Genetic factors appear to contribute to the severity and progression of diabetic retinopathy. We assessed the associations of the C807T and Glu505Lys variants of the glycoprotein Ia (alpha(2) integrin) subunit of the platelet/endothelial collagen receptor and risk of retinopathy in a population-based survey of 288 diabetic patients in one Swedish community. Neither variant was associated with reti

Pyrolysis-gas chromatography combined with simca pattern-recognition for classification of fruit-bodies of some ectomycorrhizal suillus species

Naturally grown fruit-bodies of Suillus luteus, S. bovinus and S. variegatus were subjected to Py-GC. The pyrograms obtained were statistically analysed and classified with a multivariate classification program (SIMCA). The class describing the S. bovinus pyrograms was significantly separated from both the S. luteus and the S. variegatus classes, while these two classes showed some over-lapping wh

Effects of a second mutant allele (V199I) at the PRKAG3 (RN) locus on carcass composition in pigs

The effect of a second mutant allele (V1991, here denoted rn*) at the PRKAG3 (RN) locus on carcass composition was determined in 334 pigs, entire males and females, from crosses between Swedish Hampshire (H) and Finnish Landrace (L) (H x LH; LH x H; LH x LH). Pigs were classified according to DNA test into the following PRKAG3 genotypes: RN-IRN- (23%), RN-/rn(-) (24%), RN-/rn* (33%), rn(+)/rn(+) (

Beyond the Controversy: A Study of African Theologies of Inculturation and Liberation

When Harry Sawyerr wrote his essay "What is African Theology?", published first in African Theological Journal, vol. 4 (1971), it appeared from its contents that he was making short comments about James Cone's Black theology that could have disappeared in the midst of more pressing African theological issues. Sawyerr's article was not primarily intended as a critique of Cone's Black theology; inst

Amperometric determination of acetate with a tri-enzyme based sensor

The present work describes a flow injection analysis system incorporating amperometric biosensors for acetate monitoring. Tri-enzyme-modified electrodes were fabricated by immobilizing acetate kinase (AK), pyruvate kinase (PK) and lactate dehydrogenase (LDH) into a poly(ethyleneglycole) diglycidyl ether (PEGDGE) film also containing Brilliant Cresyl Blue (BCB) as an electrochemical mediator. The c

Critical degrees of saturation at freezing of porous and brittle materials

This thesis is based on experimental work carried out during the period 1968-1972. The whole investigation is sponsored by the Swedish Council for Building Research and has been performed at the department of Building Materials at the Lund Institute of Technology. The thesis treats the problem frost resistance of building materials, a problem which is far from beeing solved despite much scientifi

Applications of Laser Based Measurements to Combustion Related Fluid Dynamics

This thesis is concerned with laser based techniques for the measurement of fluid dynamical properties and their application to combusting flowfields or flowfields related to combustion. As an introduction, the theory of turbulent flows and combustion is shortly presented. An overview of laser based measuring techniques is given. Next, seven papers are included. The main topic of papers 1 and 2 is

k(t)-factorization and CCFM: The solution for describing the hadronic final states everywhere?

The basic ideas of k(t)-factorization and CCFM parton evolution is discussed. The unintegrated gluon densities, obtained from CCFM fits to the proton structure function data at HERA are used to predict hadronic final state cross-sections like jet production at HERA, but also comparisons with recent measurements of heavy quark production at the Tevatron are presented. Finally, the k(t)-factorizatio