Models of community organization involve variations of the top-down (predator control) or bottom-up (nutrient limitation) hypotheses. Verbal models, however, can be interpreted in different ways leading to confusion. Therefore, we predict from first principles the range of possible trophic level interactions, and define mathematically the instantaneous effects of experimental perturbations. Some o

Core-level photoelectron spectra, in excellent agreement with ab initio calculations, confirm that the stable wetting layer of water on Ru{0001} contains O-H and H2O in roughly 3:5 proportion, for OHx coverages between 0.25 and 0.7 ML, and T

Background and aims: Lipids are needed for optimal glucose-stimulated insulin secretion (GSIS), and long-chain acyl-CoA (LC-CoA) has been suggested as one candidate molecule active as a lipidic coupling factor. LC-CoAs may be available to the beta-cell via uptake of circulating free fatty acids or from hydrolysis of intracellularly stored triglycerides. Inhibition of lipolysis in rat islets using

Objective This study aimed to explore the potential of in vivo q-space imaging in the differentiation between different cerebral water components. Materials and Methods Diffusion-weighted imaging was performed in six directions with 32 equally spaced q values and a maximum b value of 6600 s/mm2. The shape of the signal-attenuation curve and the displacement propagator were examined and compared

Supernumerary ring chromosomes (SRC) account for approximately 10% of prenatal marker chromosomes and 60% of these SRCs are associated with an abnormal phenotype of the patient carrying them. SRCs have, with few exceptions, not been characterized at the molecular genetic level. Here, we present the first case of a SRC 12 thoroughly investigated with tiling resolution array-based comparative genomi

dentification and characterization of the genetic background in patients with the hereditary nonpolyposis colorectal cancer (HNPCC) syndrome is important since control programmes can in a cost-effective manner prevent cancer development in high-risk individuals. HNPCC is caused by germline mismatch repair (MMR) gene mutations and the genetic analysis of HNPCC therefore includes assessment of micro

Purpose - The purpose of this paper is to examine the role of corporate communications on behalf of the monarchy as a corporate brand. Design/methodology/approach - Draws on the preliminary findings of a major study on monarchies. Findings - Argues that corporate communications is an important aspect of corporate brand management (especially in relation to constitutional monarchies). Research impl

From a public health perspective, it is important to develop effective measures to deal with stress which are based on the individual's participation, such as stress management provided in group sessions. Therefore, the aim of the present study was to compare and evaluate the self-reported health condition of women in terms of their general symptoms, stress and sense of coherence (SOC) after parti

Purpose of review To discuss the rationale for various treatment strategies in rheumatoid arthritis with extra-articular manifestations, and to review advances in understanding the impact of extra-articular rheumatoid arthritis and its management. Recent findings Recent epidemiologic studies of extra-articular rheumatoid arthritis manifestations have emphasized their major role as predictors of pr

OBJECTIVE: We first studied whether changes of needs were influenced by randomly allocated telephone interventions between 1 and 12 months after a suicide attempt in addition to treatment as usual. These were aimed at improving motivation for professional treatment. As a secondary analysis we investigated the frequency and changes of needs during this period and if changes were related to other ou

The prognosis of acute myocardial infarction (AMI) improves by early revascularization. However the presence of left bundle branch block (LBBB) in the electrocardiogram (ECG) increases the difficulty in recognizing an AMI and different ECG criteria for the diagnosis of AMI have proved to be of limited value. The purpose of this study was to detect AMI in ECGs with LBBB using artificial neural netw

In this study stool samples from dyspeptic patients and healthy subjects were used for detection of specific Helicobacter pylori antigens and DNA by immunoenzymatic test (PPHpSA) and semi-nested PCR (ureA-PCR), respectively. The H. pylori status was estimated by invasive endoscopy-based rapid urease test and histology or noninvasive urea breath test (UBT), and by serology (ELISA, Western blot). Th

This study describes frequencies and associations between eating difficulties, assisted eating and nutritional status in 520 elderly patients in hospital rehabilitation. Eating difficulties were observed during a meal and nutritional status was assessed with Subjective Global Assessment form. Eighty-two percent of patients had one or more eating difficulties, 36% had assisted eating and 46% malnut

Background: It has previously been shown that magnetic resonance imaging (MRI) can be used to accurately determine left ventricular (LV) long-axis orientation in healthy individuals. However, the inter- and intra-observer variability in patients with acute coronary syndrome (ACS) and chronic heart failure (CHF) has not been explored. Furthermore, the changes in LV long-axis orientation because of

The aims of the paper are to; i)evaluate the rate and direction of present changes in lead (Pb) and cadmium (Cd) soil pools of Swedish forests; ii) discuss processes of importance for leaching of Pb and Cd in Swedish forest soils. The presently ongoing changes of Pb and Cd pools of Swedish forest soils are evaluated by compilation of data from the literature and unpublished sources. It is conclude

Abstract in French L’effet de la courbure interfaciale sur le point de congélation de liquides retenus dans des capillaires permet, en principe, de déterminer une distribution du diamètre des pores, d’après la courbe point de congélation/volume congelé. On procède à un examen des bases théoriques et l’on montre qu’il existe une similitude formelle avec les méthodes par condensation capillaire qui By utilising the effect of interfacial curvature on the freezing-point of liquids confined in capillaries, it is in principle possible to determine a pore-size distribution, from the curve of freezing-point against volume frozen. The method is formally similar to capillary condensation methods based on the Kelvin equation. Suitable experimental techniques are described. A comparison with the resul