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The photodissociation dynamics of CH2ICH2I, CF2ICF2I, and CF2BrCF2I have been studied in solution after excitation at 266 nm. Formation of I-2 is apparent within tens of picoseconds in solutions of CH2ICH2I and CF2ICF2I in acetonitrile. but not from CF2BrCF2I, More I-2 is formed from CH2ICH2I rather than from CF2-ICF2I, as expected if the 12 formation is a result of secondary dissociation of the h
The aim of the study was to evaluate the influence of a-ketoglutarate (AKG), at pH 2 or 5, combined with vitamin B-6 (AKG 2B, AKG 5B) or C (AKG 2C, AKG 5C), on the performance and haemoglobin and amino acid levels in growing rats. Eighty rats were divided into 5 treatment groups and stayed on trial for 9 d (n=16) or 18 d (n=10). No significant differences in average daily gain (ADG), average daily
During the last decades, there has been concern that the environmental contaminants, such as POPs, may contribute to sex ratio changes in offspring of exposed populations. Accidental exposure to TCDD has been shown to be associated with fewer sons in men who were exposed in adolescence or earlier in life. However, it is not known whether POPs could change the proportion of X- and Y-sperm. A variet
Sulfate adsorption was implemented in the dynamic, multi-layer soil chemistry model SAFE. The process is modeled by an isotherm in which sulfate adsorption is considered to be fully reversible and dependent on sulfate concentration as well as pH in soil solution. The isotherm was parameterized by a site-specific series of simple batch experiments at different pH (3.8–5.0) and sulfate concentration
The E-GIS project partnership comprised 10 partners (universities, organisations and private bodies) from 6 European countries; Bulgaria, Lithuania, The Netherlands, Norway, Portugal and Sweden. The E-GIS project was initiated in order to: • Establish competent nettworks between universities and private bodies for cooperation on an European level within the GIS area – both for this project and fo
Thin layer chromatography (TLC) using staining reagents is a superior method for analyzing organic compounds without chromophores. It is fast, versatile and sometimes the only viable method. We have investigated quantitative TLC using staining reagents, in combination with modem image analysis software. Our results show that it is possible to get reliable measurements, suitable for high-throughput
Intact and permeabilized yeast cells were tested as the biorecognition elements for amperometric assay of formaldehyde (FA). For this aim, the mutant G 105 (gcr1 catX) of the methylotrophic yeast Hansenula polymorpha with a high activity of AOX was chosen. Different approaches were used for monitoring FA-dependent cell response including analysis of their oxygen consumption rate by the use of a Cl
Oncologic or traumatic head and neck defects with missing mandible, facial skin, and oral mucosa are especially well suited to reconstruction with a composite tissue unit, based on the subscapular-thoracodorsal vessels, that carries any combination of skin, bone, and muscle to restore vascularized skeletal structures, oral lining, and skin cover. The subscapular-thoracodorsal vascular pedicles sup
Objectives: To assess the risk of lymphoproliferative disease or other malignancy (standardised incidence ratios (SIRs)), in patients with primary Sjogren's syndrome according to the American-European Consensus Criteria (AECC), compared with patients with sicca syndrome (non-AECC) and the background population. To identify predictors of malignancy and describe lymphoma types and survival probabili
OBJECTIVE: To investigate socioeconomic differences in intermittent and daily smoking, and to assess the association between social participation and these two smoking behaviours.DESIGN/SETTING/PARTICIPANTS/MEASUREMENTS: A population of 11 837 individuals interviewed in 1992-94, aged 45-64 years, was investigated in this cross sectional study. A multivariate logistic regression model was used to a
Rapidly developing viral resistance to licensed human immunodeficiency virus type 1 (HIV-1) protease inhibitors is an increasing problem in the treatment of HIV-infected individuals and AIDS patients. A rational design of more effective protease inhibitors and discovery of potential biological substrates for the HIV-1 protease require accurate models for protease cleavage specificity. In this stud
Since their emergence in the late 19th century, national park spaces have been perceived as articulations of untouched nature or wild landscape beyond society. Yet no understanding of national parks can do without the recognition that they exist in historical spaces created, institutionalised and prepared for them by cultural practices and modes of representation. Rather than being given by nature
Popular Abstract in Swedish Elmarknadens avreglering har medfört att behovet av "condition monitoring" eller tillståndskontroll har ökat. Den nya "marknaden" har medfört en annan typ av aktörer, som till skillnad mot de traditionella kraftbolagen, inte har samma kultur beträffande teknikorganisation. Därför har behovet av övervakningssystem ökat markant. Avhandlingen behandlar dessa ur ett teknisThe revenue from a power plant is strongly dependent on the life cycle cost. Today, when the market conditions for power-producing companies have shifted from a protected market to a deregulated market, the need for tools to monitor power plants has increased significantly. In this new competitive market, targeted revenues and operational economy drive the need for advanced monitoring tools. In th
