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Dissolution of igneous feldspar and the formation and occurrence of secondary feldspar in tholeiitic basalts from the Hengill volcanic centre, in SW Iceland was studied by microprobe analysis of cuttings from two ca. 2000 m deep geothermal wells. Well NG-7 in Nesjavellir represents a geothermal system in a rift zone where the intensity of young, insignificantly altered intrusions increases with de
In the ammoxidation of toluene over a V2O5 catalyst, the variation of initial rates with partial pressures of oxygen, toluene and ammonia was determined for formation of carbon oxides. Dependencies obtained were analyzed and expressed in terms of rate equations. It was found that CO and CO2 are initial products formed at different sites, none of which are involved in selective reactions. The mecha
Breast cancer survival differs 9 percentage points between the neighbouring countries of Denmark and Sweden. The authors' aim was to analyse whether this was caused by early detection in Sweden. The extent of disease and outcome was compared in two population-based breast cancer cohorts in 1983-1989. Breast cancer management was decentralized in Denmark without mammography screening whereas treatm
Two important features of the global economy in the last few decades have been the increasing degree of regional economic integration and the increasing volatility of real exchange rates. Due to the EU membership and the single European currency, issues related to regional economic integration and exchange rate changes hold prominence on the business and political agenda in Sweden. This dissertat
Concentrations of PCB congeners were determined in precipitation and the annual and seasonal depositional fluxes were calculated for 16 (mostly rural) stations around the Baltic Sea during 1990-1993. The concentrations of individual congeners in precipitation were found to be influenced by atmospheric concentrations of PCBs, ambient temperature, precipitation volume and physico-chemical properties
We have studied the influence of bulk inversion asymmetry (BIA) and the relativistic part of the low-symmetry interface Hamiltonian (IH) on intersubband optical transitions, induced by linearly polarized light, between strongly hybridized electron-hole states in asymmetrical InAs/GaSb broken-gap quantum wells grown along the [001] direction. The self-consistent calculations were performed using th
The Suicide Assessment Scale (SUAS) was constructed to be sensitive to change of suicidality. It was recently found to be predictive of suicide in a group of suicide attempters. The aim of the present study was to evaluate the reliability and validity of a modified interview version of SUAS with defined scores and also a new self-rating version (SUAS-S). The subjects consisted of former inpatients
A thorough kinetic investigation of the ammoxidation of toluene over a V2O5 catalyst was carried out. Pressures of reactants were varied and rates for formation of benzonitrile and benzaldehyde were determined. Kinetic expressions completely describing experimental data were derived. A mechanisms is proposed on basis of both rate equations and other types of information published in the literature
Allelopathy, the release of extracellular compounds that inhibit the growth of other microorganisms, may be one factor contributing to the formation and/or maintenance of cyanobacterial blooms. We investigated the allelopathic effects of three cyanobacterial species (Nodularia spumigena, Aphanizomenon flos-aquae and Anabaena lemmermannii) that frequently form mass-occurrences in the Baltic Sea. We
Purpose: To suggest a more precise tool when assessing the risk of contrast-medium-induced nephropathy (CIN), i.e. the ratio between contrast medium (CM) dose expressed in grams of iodine (g-I) and estimated glomerular filtration rate in ml/min (eGFR; based on equations using serum-creatinine (s-Cr), weight, height, age, and/or sex), here named I-dose/GFR ratio. Material and Methods: A Medline sea
A packed-bed bioreactor inoculated with a mixed culture obtained from a contaminated site was used to continuously treat a saturated solution of nonylphenol. The reactor was operated at feeding rates of 13–112 ml h−1 and temperatures of 5.5, 10, and 15°C. Optimal bioreactor performance was achieved at 10°C and at a feeding rate of 84 ml h−1 (with a removal rate of 43 mg l−1 day−1 of nonylphenol).
The aim of this thesis was to study annually laminated (varved) Holocene lake sediment in Sweden, their formation and their potential as chronological and palaeoecological archives. Five lakes with continuous Holocene varved lake sediment sequences in northern (Västerbotten) and west central Sweden (Värmland) were investigated. Three of these sequences were discovered during this study, which iden
Ninety-eight patients, 56 suffering according to DSM-IV of unipolar depression and 42 of somatoform disorders, were compared on the Beck Depression Inventory (BDI) total scale, the subscale of Somatic complaints and the Cognitive-affective subscale. A factor analysis performed on the total group revealed five factors used to determine new subscales: Depressed mood, Somatic manifestations, Loss of
Context. Manganese is an iron-peak element and although the nucleosynthesis path that leads to its formation is fairly well understood, it remains unclear which objects, SN II and/or SN Ia, that contribute the majority of Mn to the interstellar medium. It also remains unclear to which extent the supernovae Mn yields depend on the metallicity of the progenitor star or not. Aims. By using a well stu
BACKGROUND: The role of cholecystokinin (CCK) and gastrin in the development and growth of pancreatic cancer cells is controversial. The aim of this study was to evaluate the role of CCK-8S, gastrin-17, bombesin, and their antagonists on cell lines from patients with pancreatic cancer. METHODS: Cell lines were established from pancreatic cancers operated on at our department. The cells were grown
Study Design. Biomechanical analysis of the movement of the lumbar spinal nerve roots (NRs). Objectives. The characteristics of the movement of lumbar spinal NRs corresponding to the change of posture were three-dimensionally analyzed in nonsimulated and simulated adhesion conditions using a porcine model. Summary of Background Data. There is a paucity of data on the movement of NRs. Materials and
