Bees and wasps perform systematic flight manoevres when they leave their nest or a foodplace, during which they acquire or update their visual memory of the goal location. In a typical learning flight, the insect backs away from the goal in a series of arcs that are roughly centred on the goal. The mean rate of turning is rather constant and tends to balance the angular speed at which the arc is d

Colour vision greatly enhances the discriminatory and cognitive capabilities of visual systems and is found in a great majority of vertebrates and many invertebrates. However, colour coding visual systems are confronted with the fact that the external stimuli are ambiguous because they are subject to constant variations of luminance and spectral composition. Furthermore, the transmittance of the o

We studied the functional role of two mutations, Pro55Ser and Pro55Leu, located in the N-terminal Epidermal Growth Factor-like domain (EGF1) of coagulation factor (F) IX. Both mutations cause mild hemophilia B with habitual FIX coagulant activities of 10-12% and FIX antigen levels of 50%. We found that activation by FVIIa/TF and FXIa was normal for FIXPro55Ser, but resulted in proteolysis of FIXPr

PURPOSE: To assess cardiac mortality, coronary artery disease, myocardial dysfunction, and valvular heart disease in women younger than 65 years of age, at least 10 years after adjuvant radiotherapy following mastectomy in early breast cancer. METHODS AND MATERIALS: Ninety women (45-64 years old) with Stage II breast cancer without relapse, included in the South Sweden Breast Cancer Trial (premeno

The aim of the study was to investigate what factors the physiotherapy experts in psychiatric physiotherapy believed to be important in the interaction between the patient and the physiotherapist (PT). The objective was to obtain a deeper insight into their reasoning concerning interaction and treatment outcomes. Eleven nominated ''expert'' PTs were each interviewed twice. Triangulation of importa

Aim: To evaluate survival after out-of-hospital cardiac arrest in relation to sex. Methods: All patients with out-of-hospital cardiac arrest included in the Swedish Cardiac Arrest Registry between 1990 and 2000 in whom cardiopulmonary resuscitation (CPR) was attempted and who did not have a crew witnessed arrest were included. The registry covers 85% of the inhabitants of Sweden (approximately 8 m

This article tests for existence of cointegration between health expenditure and GDP using data from 25 OECD countries for the period 1960-1997. The empirical modelling is based on a heterogeneous bivariate vector error correction panel model that allows for trending data as well as intercepts and trends in the cointegrating relations. Univariate country-by-country and panel unit root tests genera

An annotated list of the known vascular plants of Andros is provided, with notes on ecological preferences, altitudinal distributions and frequency. The total number of native and naturalized taxa of vascular plants listed is 1055. Exact localities are provided for the rarest species on the island. 74 maps are also provided for species with variously delimited distribution. For the species known t

The objective of the study was to evaluate the intestinal tolerance of a newly developed food containing Lactobacillus plantarum 299v, in children. The effects of consumption of the product on the children's nutrient intake were also followed, in a separate study. The tolerance study was parallel, double-blind, and included 69 children between 6 months and 3 years of age, randomized into two group

The present paper describes the principle and characteristics of a biosensor for lactose based on a third-generation design involving cellobiose dehydrogenase. As resulted from a previous comparative study (submitted manuscript), the novelty of this lactose biosensor is based on highly efficient direct electron transfer between two newly discovered cellobiose dehydrogenases (CDH), from the white r

A train of attosecond pulses, synchronized to an infrared (IR) laser field, is used to create a series of electron wave packets (EWPs) that are below the ionization threshold in .helium. The ionization probability is found to strongly oscillate with the delay between the IR and attosecond fields twice per IR laser cycle. Calculations that reproduce the experimental results demonstrate that this io

Since about 25 years ago work has been dedicated to the development of hydrodynamical model atmospheres for cool stars (of A to T spectral type). Despite their obviously sounder physical foundation in comparison with standard hydrostatic models, their general application has been rather limited. In order to understand why this is, and how to progress, we review the present status of hydrodynamical

OBJECTIVE: Although clinically approved for myelodysplastic syndromes (MDS), the mode of action of 5-azacytidine has not been well understood at the cellular level. The present study aimed at characterizing the mechanisms for 5-azacytidine-induced apoptosis, as well as the presence of a possible link between apoptosis and DNA hypomethylation. MATERIALS AND METHODS: We investigated the effects of 5

One of the most ubiquitous phenomena of all natural populations is their variability in numbers in space and time. However, there are notable differences among populations in the way the population size fluctuates. One of the major challenges in population and community ecology is to explain and understand this variety and to find possible underlying rules that might be modified from case-to-case.

Molecularly imprinted polymer microspheres were prepared by precipitation polymerization using a sacrificial covalent bond. In the present model, cholesteryl (4-vinyl)phenyl carbonate was used as a template monomer. The imprinted microspheres were prepared using ethylene glycol dimethacrylate (EDMA) and divinylbenzene (DVB) as crosslinker. The base-labile carbonate ester bond was easily hydrolyzed

Patients often worry considerably about biomedically mild and self-limiting conditions. A previous study on non-selected primary care patients showed that this could be partly explained by frequent associations with cases of serious illness in their family histories. This study further investigated these phenomena in middle aged men with a recent diagnosis of hypercholesterolaemia. Sixty-three out

Introduction Night nurses carry overall nursing responsibility for approximately half the time that patients spend in hospital. However, there is a paucity of literature that focuses on nursing care provided at night. Aim The aim of this study was to evaluate nursing care provided at night from the perspective of both nurses and patients. Methods The study, which had an evaluative and a comparativ