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Diversities and similarities in PFGE profiles of Campylobacter jejuni isolated from migrating birds and humans

Aims: To genetically sub-type Campylobacter jejuni strains isolated from migratory birds, and to compare these with clinical strains collected in the same area and corresponding time period, with the aim to increase our knowledge on sub-types occurring among wild birds and their possible impact on human disease. Methods and Results: We sub-typed C. jejuni strains from migrating birds (n = 89) and

Intrinsically proton-conducting comb-like copolymers with benzimidazole tethered to the side chains

Intrinsically proton-conducting comb-like copolymers having side chains tethered with benzimidazole units have been prepared and characterized with respect to their thermal properties and proton conductivity. In the first step of the preparation, poly(4-hydroxystyrene) was synthesized by polymerization of tert-butoxystyrene followed by hydrolysis of the butoxy groups. In the next step, poly(allyl

Uptake, translocation and assimilation of nitrogen from 15N-labeled ammonium and nitrate sources by intact ectomycorrhizal systems of Fagus sylvatica infected with Paxillus involutus

The uptake and assimilation of nitrogen from 15N-labelled ammonium and nitrate sources was followed in intact ectomycorrhizal systems containing Fagus sylvatica L. plants infected with the fungus Paxillus involutus (Mich. ex Pers.) Cohen & Couch. Plants were grown in flat perspex observation chambers containing non-sterile peat; the fungal mycelium growing from a host plant was allowed to cros

Assessment of organochlorine pesticide pollution in Upper Awash Ethiopian state farm soils using selective pressurised liquid extraction.

Upper Awash Agro Industry Enterprises (UAAIE) is one of the major state farms in Ethiopia with known large-scale pesticide use. Although organochlorine pesticides (OCPs) have been applied for about three decades, no studies have been carried out on levels of residue in the region. In this work a fast selective pressurised liquid extraction (SPLE) methodology has successfully been applied for scree

The social networks of severely mentally ill persons in inpatient settings and sheltered community settings

The social networks of individuals with severe mental illness admitted to long-term in-patient settings and living in two types of supported housing, small congregate community residences and independent living with support, were compared. The Interview Schedule for Social Interaction (ISSI) was used. The results showed no substantial differences in social networks between the two types of support

Adaptation of soil microbial communities to temperature: comparison of fungi and bacteria in a laboratory experiment

Temperature not only has direct effects on microbial activity, but can also affect activity indirectly by changing the temperature dependency of the community. This would result in communities performing better over time in response to increased temperatures. We have for the first time studied the effect of soil temperature (5-50 degrees C) on the community adaptation of both bacterial (leucine in

The role of gastric evacuation rate in handling time of equal-mass rations of different prey sizes in northern pike

In a laboratory experiment, northern pike Esox lucius gastric evacuation rates did not differ between equal-mass rations of small and large prey. In a comparison between intermediate and large prey, the pike were unable to fit two intermediate prey completely into the stomach at the same time, resulting in two consecutive evacuations, and changes in patterns of gastric evacuation. Thus. total gast

Application of a high-repetition-rate laser diagnostic system for single-cycle-resolved imaging in internal combustion engines

High-repetition-rate laser-induced fluorescence measurements of fuel and OH concentrations in internal combustion engines are demonstrated. Series of as many as eight fluorescence images, with a temporal resolution ranging from 10 mus to 1 ms, are acquired within one engine cycle. A multiple-laser system in combination with a multiple-CCD camera is used for cycle-resolved imaging in spark-ignition

Quantitative polar representation of left ventricular myocardial perfusion, function and viability using SPECT and cardiac magnetic resonance: initial results.

Background: The clinical management of patients with coronary artery disease (CAD) often involves a complex assessment of the extent and severity of changes in left ventricular (LV) myocardial perfusion, function and viability. We aimed to explore the feasibility of integrative quantitative representation of LV perfusion, function and viability in adjacent polar plots. In order to assess the clini

An increased micronucleus frequency in peripheral blood lymphocytes predicts the risk of cancer in humans

The frequency of micronuclei (MN) in peripheral blood lymphocytes (PBL) is extensively used as a biomarker of chromosomal damage and genome stability in human populations. Much theoretical evidence has been accumulated supporting the causal role of MN induction in cancer development, although prospective cohort studies are needed to validate MN as a cancer risk biomarker. A total of 6718 subjects

DSC studies of gamma-irradiation influence on amylose-lipid complex transition in wheat flour

DSC studies were carried out in the heating-cooling cycles for non-irradiated and irradiated with gamma-rays ((CO)-C-60) using 30 kGy dose wheat flour. The differences between gelatinisation and reversible transition of amylose-lipid complexes occurring in suspensions of non-irradiated and the irradiated flour (characterized by a dry matter to water ratio of 1: 1 and 1:3) depend on the conditions

Thermodynamic format and heat generation of isotropic hardening plasticity

Heat generation due to plastic deformation of metals and steel is studied. Whereas in many investigations it is assumed that the fraction eta of the plastic work transformed into heat is constant throughout the deformation process, the fraction eta is here derived from thermodynamic considerations in a large-strain setting. It is shown that for elasto-plasticity the fraction eta follows as a resul

The effects of liming on mycelial colonization and carbon allocation in ectomycorrhizal mycelia attached to Pinus silvestris plants

The effects of liming on ectomycorrhizal mycelial colonization and carbon allocation were assessed using Pinus silvestris plants grown in association with an ectomycorrhizal fungus. Plants were placed in perspex growth chambers divided by a central partition so that soils of different pH could be used on either side of the chambers. Differences between the growth form and growth rates of the fungi