In a periodically changing environment it is important for animals to properly time the major events of their life in order to maximise their lifetime fitness. For a non-migratory bird the timing of breeding and moult are thought to be the most crucial. We develop a state-dependent optimal annual routine model that incorporates explicit density dependence in the food supply. In the model the birds

Proteins can adjust their structure and function in response to shifting environments. Functional diversity is created not only by the sequence but by changes in tertiary structure. Here we present evidence that lipid cofactors may enable otherwise unstable protein folding variants to maintain their conformation and to form novel, biologically active complexes. We have identified unsaturated C18 f

When experimentally displaced in geomagnetic space, spiny lobsters act as if to make their way home. This is a fascinating case of navigation by an invertebrate using a magnetic map sense.

This cross-sectional study aimed at investigating the influence of occupational exposure to static and highly repetitive work involving the neck and shoulder muscles, myalgia of and tender point in the trapezius muscle on biomechanical output, and electromyogram (EMG) variables (mean frequency MNF, signal amplitude and ability to relax) during maximal forward flexions of the shoulder muscles. Grou

We show that well-defined arrays of self-assembled Ge dots on Si(001) can be grown after pre-patterning the Si surface by means of an electron beam. The electron beam produces C-containing growth masks. The overgrowth of these masks with Si results in pits at the Si surface, in and around which Ge dots nucleate selectively. A manifold of different arrays can be obtained. Almost perfect arrays of q

This article deals with the scientific factors that have contributed to the dominance of motorised transport and the development of theoretical approaches in transport planning. Connections are made to modernism and to the theories within the field of transport planning that have created today’s transport systems. Connections are then made to the field of bicycle planning. It is argued that there

The recent English translation of the diary of the Swedish naturalist Daniel Rolander (written 1754-1756) reveals the earliest records on useful plants of Suriname. Since he did not grant Linnaeus access to his specimens, Rolander never received credit for his work, part of his collection was lost, and his diary never published. Here we compare Rolander's notes with recent ethnobotanical data from

In untreated patients with Alzheimer disease (AD) the functional ability is gradually lost. What happens to the patients after continuous long-term cholinesterase inhibitor (ChEI) treatment is less investigated. The objective of this study was to describe the longitudinal functional outcome and analyze factors affecting the outcome in ChEI-treated patients. In an open, 3-year, nonrandomized, prosp

NGC 2419 is a peculiar Galactic globular cluster off set from the others in the size-luminosity diagram, and showing several chemical abundance anomalies. Here, we present Stromgren uvby photometry of the cluster. Using the gravity-and metallicity-sensitive c(1) and m(1) indices, we identify a sample of likely cluster members extending well beyond the formal tidal radius. The estimated contaminati

Context: To treat or not to treat is one of the most difficult dilemmas facing prostate cancer patients, especially elderly men with early prostate cancer or small cancer that is contained within the prostate. Objective: The primary objective of this review is to analyse the treatment options for patients with localised prostate cancer. This information can be considered alongside other important

Purpose: To report on the retinal function and structure in a 37-year-old male who presented with a tapetal-like reflex (TLR) indistinguishable from that seen in female carriers of X-linked retinitis pigmentosa (XLRP). Methods: Clinical examination included dark adaptometry, full-field electroretinography (ERG), multifocal ERG, optical coherence tomography, and fundus autofluorescence photography.

In this paper we examine whether order imbalances can predict the Chinese stock market returns. We use intraday data, a panel data predictive regression model that accounts for persistent and endogenous order imbalances and cross-sectional dependence in returns, and show that order imbalances predict stock returns from 1-minute trading to 90-minute trading. On the basis of this predictability evid

TRUFFER B. and COENEN L. Environmental innovation and sustainability transitions in regional studies, Regional Studies. Sustainable development and environmental innovations have received increasing attention in regional studies and the related literature. In how far sustainability concerns might also lead to fundamental transformations in technologies, industries and lifestyles (so-called sustain

This paper presents new experimental measurements of the laminar flame velocity of components of natural gas, methane, ethane, propane, and n-butane as well as of binary and tertiary mixtures of these compounds proposed as surrogates for natural gas. These measurements have been performed by the heat flux method using a newly built flat flame adiabatic burner at atmospheric pressure. The compositi

A parasite's ability to be a specialist vs. a generalist may have consequences for its prevalence within one or more if its host species. In this study we investigated the relationship between host specialization and prevalence in the highly species diverse avian blood parasites of the genera Plasmodium and Haemoproteus. Contrary to trade-off hypotheses that may explain host specialization, within

I kanadensiska mi'kmaqberättelser, vilka nedtecknades under tiden som gruppen levde som jägare och samlare, finna flera skildringar av djur som flitiga agenter. Det finns till och med berättelser om äktenskap mellan människor och djur som dock alltid slutar olyckligt. Hur ska dessa berättelser läsas? Som nonsens eller säger de något om gränser och förhållningssätt till det vi i väst dikotomiserat