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Irregular walks and loops combines in small-scale movement of a soil insect: implications for dispersal biology

Analysis of small-scale movement patterns of animals we may help to understand and predict movement at a larger scale, such as dispersal, which is a key parameter in spatial population dynamics. We have chosen to study the movement of a soil-dwelling Collembola, Protaphorura armata, in an experimental system consisting of a clay surface with or without physical obstacles. A combination of video re

Migration of model contaminants from PET bottles: influence of temperature, food simulant and functional barrier

To simulate post-consumer recycled plastics, selected model contaminants were incorporated into PET bottles using a time saving method. Migration into 3% acetic acid, a cola-type beverage and 95% ethanol was followed during 1 year of storage at 20 and 40degreesC. Aroma compounds previously found in post-consumer PET material were used as model contaminants. Benzaldehyde was found to migrate to the

Three-dimensional analysis of two-phase flow and its effects on the cell performance of PEMFC

For a cathode duct of a proton-exchange membrane fuel cell, a three-dimensional analysis method is further developed to include two-phase, multicomponent gas and heat transport processes. A set of momentum, heat transport, and gas species equations is solved for the whole duct by coupled source terms and variable thermophysical properties. The effects of the electrochemical reactions on the heat g

Frequency Offset Correction for Coherent OFDM In Wireless Systems

In this paper, a new frequency offset correction approach for OFDM is proposed to track a wider range of offsets than conventional proposals, without devoting specific pilot symbols for synchronization. This can be attained since, in coherent OFDM, channel estimation is usually performed employing pilot-symbol assisted-modulation (PSAM), based on inserting known symbols in the time-frequency grid.

The use of clinical risk factors enhances the performance of BMD in the prediction of hip and osteoporotic fractures in men and women

BMD and clinical risk factors predict hip and other osteoporotic fractures. The combination of clinical risk factors and BMD provide higher specificity and sensitivity than either alone. Introduction and hypotheses To develop a risk assessment tool based on clinical risk factors (CRFs) with and without BMD. Methods Nine population-based studies were studied in which BMD and CRFs were documented at

Evaluation of capture ELISA for detection of antineutrophil cytoplasmic antibodies directed against proteinase 3 in Wegener's granulomatosis: first results from a multicentre study

Objective: To evaluate the performance characteristics of direct and capture ELISA for the detection of PR3-ANCA in Wegener's granulomatosis (WG) in international ANCA reference laboratories. Methods: Serum samples were derived from patients with histological and clinical diagnosis of WG (n = 60), rheumatoid arthritis (RA) (n = 30) and healthy controls (n = 30). Each of them was tested for the pre

Metabola syndromet i blåsväder. Internationell strid om riskfaktorkomplexets vetenskapliga grund

En ansamling av riskfaktorerna bukfetma, hypertoni, dyslipidemi och glukosintolerans på basis av insulinresistens brukar ofta betecknas som metabola syndromet, men denna term är för närvarande omstridd i den internationella vetenskapliga debatten. Oavsett benämning finns denna riskfaktoransamling hos många individer och bör inte ignoreras. Rådgivning och hjälp till en förbättrad livsstil med kost,

Religion och intersektionalitet

Religion and intersectionality Categories frequently discussed in terms of intersectionality are gender, class, race, ethnicity and sexual orientation. This paper argues that religion often is a relevant dimension in intersectional analyses. Religion may not be inevitable as the other dimensions, but in large parts of the world it is nevertheless an unavoidable social element and even in the secu

Tidningsmakt och politiska organisationer : den borgerliga samlingsrörelsen i Fyrstadskretsen 1962-1968

The big Malmö newpapers Sydsvenska Dagbladet and Kvällsposten, both owned by the family Wahlgren, involved themselves heavily in Swedish party politics in the 1960s. The Social Democrats had in 1962 been in almost permanent power in Sweden since 1932. There was a desperate wish for change in power among many Swedishy voters. In this atmosphere Olof Wahlgren, Sydsvenska Dagbladet´s deputy editor,