Search results
Filter
Filetype
Your search for "*" yielded 528606 hits
Sturgeons, sharks, and rays have multifocal crystalline lenses and similar lens suspension apparatuses.
Crystalline lenses with multiple focal lengths in monochromatic light (multifocal lenses) are present in many vertebrate groups. These lenses compensate for chromatic aberration and create well-focused color images. Stabilization of the lens within the eye and the ability to adjust focus are further requirements for vision in high detail. We investigated the occurrence of multifocal lenses by phot
Changes in caregiver burden and health-related quality of life of informal caregivers of older people with Dementia: evidence from the European RightTimePlaceCare prospective cohort study
Abstract Aims. To describe differences in caregiver burden and health-related quality of life of informal caregivers of people with dementia in eight European countries and assess changes after transition from home to institutional long-term care. Background. Country differences in the experience of burden and health-related quality of life are rarely described. Design. Prospective cohort study. M
Correlation between phenotype and genotype in a large unselected cohort of children with severe hemophilia A
Phenotypic variability is well recognized in severe hemophilia A. A few studies, mainly in adults treated lifelong on demand, suggest that bleeding phenotype correlates with factor VIII gene (F8) mutation type. Because treatment regimens influence outcomes to a large extent, examining bleeding phenotype during the first years of life may be the most suitable way to define this variability. We set
Kinematics of flight and the relationship to the vortex wake of a Pallas' long tongued bat (Glossophaga soricina).
To obtain a full understanding of the aerodynamics of animal flight, the movement of the wings, the kinematics, needs to be connected to the wake left behind the animal. Here the detailed 3D wingbeat kinematics of bats, Glossophaga soricina, flying in a wind tunnel over a range of flight speeds (1-7 m s(-1)) was determined from high-speed video. The results were compared with the wake geometry and
Rod packing in chiral nematic cellulose nanocrystal dispersions studied by small angle X-ray scattering and laser diffraction
The packing of cellulose nanocrystals (CNC) in the anisotropic chiral nematic phase has been investigated over a wide concentration range by small-angle X-ray scattering (SAXS) and laser diffraction. The average separation distance between the CNCs and the average pitch of the chiral nematic phase have been determined over the entire isotropic−anisotropic biphasic region. The average separation di
Testing the applicability of neural networks as a gap-filling method using CH4 flux data from high latitude wetlands
Since the advancement in CH4 gas analyser technology and its applicability to eddy covariance flux measurements, monitoring of CH4 emissions is becoming more widespread. In order to accurately determine the greenhouse gas balance, high quality gap-free data is required. Currently there is still no consensus on CH4 gap-filling methods, and methods applied are still study-dependent and often carried
Male patients with terminal renal failure exhibit low serum levels of antimüllerian hormone.
Male reproductive function is impaired during end-stage renal disease (ESRD). Disturbance of the hypothalamic-pituitary-gonadal axis, and therefore the regulation of sex hormones, is one of the major causes. Our focus was to include antimüllerian hormone (AMH) and inhibin B concentrations. Twenty male patients on hemodialysis, median age 40 (26-48) years, were analyzed for follicle-stimulating hor
Addition of crop residues affects a detritus-based food chain depending on litter type and farming system
The addition of crop residues is a common farming practice to increase the organic carbon content of agricultural soils with particular importance in organically managed crops. Residues can be added either from the crop plant itself or from other plants and the type of litter may differentially affect decomposer populations. Effects of litter addition may cascade up to affect generalist predators
Shared and non-shared familial susceptibility of coronary heart disease, ischemic stroke, peripheral artery disease and aortic disease.
BACKGROUND: Little is known about whether the four main manifestations of arterial vascular disease (coronary heart disease=CHD, ischemic stroke, peripheral artery disease=PAD, and aortic (i.e. atherosclerosis/aneurysm) disease=AD) share familial susceptibility. The aim of this nationwide study was to determine the familial risks of concordant (same disease in proband and exposed relative) and dis
Adherence to predefined dietary patterns and incident type 2 diabetes in European populations: EPIC-InterAct Study
Few studies have investigated the relationship between predefined dietary patterns and type 2 diabetes incidence; little is known about the generalisability of these associations. We aimed to assess the association between predefined dietary patterns and type 2 diabetes risk in European populations. From among a case-cohort of 12,403 incident diabetes cases and 16,154 subcohort members nested with
Flow and stability of natural pest control services depend on complexity and crop rotation at the landscape scale
Increasing landscape complexity can enhance biodiversity and ecosystem services in agroecosystems. However, policies based on conversion of arable land into semi-natural habitats to increase landscape complexity and ecosystem services can be difficult to implement. Although it appears to be a promising management option, nothing is known about the effect of increasing landscape diversity through c
The effect of terbutaline on the absorption of pulmonary administered insulin in subjects with asthma
center dot People with mild and moderate asthma have been shown to absorb less inhaled insulin than healthy subjects. center dot In people with moderate asthma, the administration of a bronchodilator before inhalation of insulin has been shown to lead to increased uptake of inhaled insulin compared with no prior administration of bronchodilator. WHAT THIS STUDY ADDS center dot This study is the fi
Oral contraceptive use and reproductive factors and risk of ovarian cancer in the European Prospective Investigation into Cancer and Nutrition
BACKGROUND: It is well established that parity and use of oral contraceptives reduce the risk of ovarian cancer, but the associations with other reproductive variables are less clear. METHODS: We examined the associations of oral contraceptive use and reproductive factors with ovarian cancer risk in the European Prospective Investigation into Cancer and Nutrition. Among 327 396 eligible women, 878
Editorial: Special Issue: Selected Papers from the Vienna Congress (2014) - How to Enhance the Sustainable use of ITS
Radiocarbon wiggle matching of Swedish lake varves reveals asynchronous climate changes around the 8.2 kyr cold event
A series of nine radiocarbon measurements obtained at increments of 50 years was used to wiggle match varved sediments in Lake Kalksjon (west central Sweden) to the calendar year time scale provided by the tree-ring-derived radiocarbon calibration curve. The anchor point for a series of 400 varves known to span the '8.2 kyr cold event' was derived from a combination of correlation analysis, Monte
Biological, clinical and population relevance of 95 loci for blood lipids
Plasma concentrations of total cholesterol, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol and triglycerides are among the most important risk factors for coronary artery disease (CAD) and are targets for therapeutic intervention. We screened the genome for common variants associated with plasma lipids in >100,000 individuals of European ancestry. Here we report 95 signi
Informell ekonomi som rationell vana och statskritik : En intervjustudie kring post-sovjetisk vardagskorruption
This article examines continuity, change and adaptation of blat, a Soviet-time informal economic transaction network, in today’s Ukraine and Belarus. The analysis is based on 33 in-depth interviews, and the main focus is the descriptions, justifications and explanations of on-going informal participation in contemporary forms of blat. Theories on informal institutions, path dependence and the rela
Household salt for retrospective dose assessments using OSL: signal integrity and its dependence on containment, sample collection, and signal readout.
The aim of this work was to determine how a latent optically stimulated luminescence (OSL) signal in irradiated household salt is preserved under various ambient conditions, from the time of exposure to the time of signal readout. The following parameters were examined: optical fading in fluorescent light and under darkroom conditions (red light), thermal stability of the OSL signal during storage
Transscleral visible/near-infrared spectroscopy for quantitative assessment of melanin in a uveal melanoma phantom of ex vivo porcine eyes
Optical spectroscopy has been used as a supplement to conventional techniques for analyzing and diagnosing cancer in many human organs. Because ocular tumors may be characterized by their different melanin content, we investigated the feasibility of using transscleral visible/near-infrared spectroscopy (Vis/NIRS) to estimate the quantity of melanin in a novel uveal melanoma phantom of ex vivo porc