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Soil ecotoxicity of polycyclic aromatic hydrocarbons in relation to soil sorption, lipophilicity, and water solubility.
The results provide important input to future model predictions of the ecological risk posed by PAH contaminated sites and indicate that these substances do act by narcosis as the mode of toxic action and that their toxicity is governed by concentrations in the pore-water. Expand
Osseointegrated implants for single-tooth replacement: a prospective 5-year multicenter study.
The outcome of this study indicated that safe and highly predictable results can be obtained for 5 years when Brånemark implants are used to support single-tooth restorations. Expand
Microbial and microfaunal community structure in cropping systems with genetically modified plants
Based on the field evaluations of microfauna and microorganisms, it is concluded that there were no soil ecological consequences for these communities associated with the use of Bt - or HT-maize in place of conventional varieties. Expand
Effects of the antibiotics oxytetracycline and tylosin on soil fauna.
The effects of two widely used antibiotics, tylosin and oxytetracycline, on three species of soil fauna: Earthworms, springtails and enchytraeids are tested and neither had any effect at environmentally relevant concentrations. Expand
Effects of acclimation temperature on thermal tolerance and membrane phospholipid composition in the fruit fly Drosophila melanogaster.
Cold tolerance but not heat tolerance was influenced by preimaginal acclimation temperature and correlated with the changes in GPL composition in membranes of adult D. melanogaster. Expand
Measuring basal soil respiration across Europe: Do incubation temperature and incubation period matter?
The results suggest that experimental incubation temperatures of 20◦C or above should be used in the application of the methodology ISO 16072:2002, and that pre-incubation temperature did not affect the soil basal respiration rate, when following the standard recommendations. Expand
Recycling of sewage sludge and household compost to arable land: fate and effects of organic contaminants, and impact on soil fertility
Effective use of organic wastes for agricultural production requires that risks and benefits be documented. Two types of sewage sludge, household compost and solid pig manure were studied under fieldExpand
NORMA-Gene: A simple and robust method for qPCR normalization based on target gene data
The NORMA-Gene algorithm is presented, which is based on a data-driven normalization and is useful for as little as five target genes comprising the data-set, allowing researchers to focus their efforts on studying target genes of biological relevance. Expand
Relative sensitivity of three terrestrial invertebrate tests to polycyclic aromatic compounds.
New data are presented on the effects of PACs on the survival and growth of the earthworm Eisenia veneta, showing that, in general, earthworm growth was reduced at PAC concentrations above 25 mg/kg soil dry weight. Expand
Soil microbial toxicity of eight polycyclic aromatic compounds: effects on nitrification, the genetic diversity of bacteria, and the total number of protozoans.
For effects on nitrification, toxicity (NOEC values) expressed as soil pore-water concentrations (log10(micromol/L)) showed a significant inverse relationship with lipophilicity (log octanol-water partition coefficient) of the substances (r2 = 0.69, p =0.011), which could indicate that the toxicity of substances similar to those tested might be predicted by a quantitative structure-activity relationship with LipophILicity as the predictor variable. Expand