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The diurnal and seasonal occurrence of flight foraging for midges (Chironomidae) by Black-headed Gulls Chroicocephalus ridibundus was studied at a shallow semi-eutrophic lake in South Sweden and their capture rates were recorded. The gulls captured 0.28 chiromids s(-1) (1,012 h(-1)). With a dry mass of 2.08 mg ind(-1) and an energy content of 22.7 kJ g(-1), they achieved an energy intake of c.47 k
We investigate electron transport in disordered Hubbard chains contacted to macroscopic leads, via the nonequilibrium Green's function technique. We observe a crossover of currents and conductances at finite bias which depends on the relative strength of disorder and interactions. We provide a proof that the coherent potential approximation, a widely used method for treating disorder averages, ful
Bismuth (Bi) induced c(4 x 4) surface structure of the GaAs(1 0 0) substrate, i.e., the GaAs(1 0 0)c(4 x 4)-Bi surface has been studied with synchrotron-radiation photoelectron spectroscopy and ab initio calculations. The surface was prepared by combining molecular beam epitaxy and in situ electron diffraction methods, and then the sample was transferred to a photoemission chamber without breaking
The article takes issue with how theology should and could investigate religious doctrines and praxis. It argues that traditional metaphysical accounts often found in theology are scientifically inept to explain the human cause and function of religious dogma. Arguing from pragmatism the article tries to delineate a framework within which theology could circumvent the troublesome metaphysics that
The repair and maintenance of electrical power lines involves awkward postures, which are known risk factors for developing musculoskeletal disorders. The aim of the present study was to quantify postures and movements of upper arm, head, upper back and neck in the main tasks performed by line workers. Posture of twelve right-handed line workers was recorded by inclinometry and presented as percen
Introduction Autism spectrum disorders (ASDs) are neurodevelopmental disorders characterized by restrictions in social interaction, understanding, and communication, by stereotyped patterns of repetitive behaviors, and by narrow interests. ASDs, which affect about 1% of the population, are predominantly genetic, but no single explanation has been found. On the contrary, a multitude of developmenta
The notions of creativity consultants on how play promotes workplace creativity was investigated. Play is often used by creativity trainers to promote creative performance. Seventeen experienced professionals were interviewed. The informants considered play to facilitate group creativity by increasing openness, intrinsic motivation and collaboration. Play was encouraged by permission to play, that
Using correlated ab initio methods, the polarizability of large [4n + 2]-annulenes is determined, showing that there exists an almost linear relation between the exaltation of magnetic susceptibility (a measure of aromaticity) and an equivalent enlargement of polarizability.
Requirements communication plays a vital role in development projects in coordinating the customers, the business roles and the software engineers. Communication gaps represent a significant source of project failures and overruns. For example, misunderstood or uncommunicated requirements can lead to software that does not meet the customers’ requirements, and subsequent low number of sales or add
The structures of two polymorphs, one triclinic and one monoclinic, of cis-dichlorobis(dibenzyl sulfido-kS)platinum(II), cis-PtCl2(Bz2S)2 have been determined at 295, 250, 200, 150 and 100 K. In both polymorphs the complex has a structure where platinum(II) coordinates two dibenzyl sulfide molecules and two chloro ligands, forming a complex with pseudo-sqare-planar coordination geometry. The tricl
Immunoglobulin A deficiency (IgAD) is the most common primary immunodeficiency in the general population. It is defined as a serum IgA level below or equal to 0.07 g/l with normal IgM and IgG levels in children over the age of 4. However, a few cases of reversal of IgAD at later ages have been observed previously, especially in pediatric patients. This study aimed at investigating the frequency of
Inflammation and ischemia are common causes of perinatal brain damage. Ventilation with pure oxygen has previously been the prime choice during resuscitation following fetal asphyxia. In an in vivo sheep model incorporating the transition from fetal to neonatal life we demonstrate that hyperoxic resuscitation increases cerebral inflammatory activation which may aggravate subsequent injury. Inflam
Upconverting nanoparticles have recently drawn increasingly attention as contrast agents for optical bioimaging. They enable autofluorescence-free imaging within the tissue optical window, and improved spatial resolution as compared to conventional fluorescence-based contrast agents. (C) 2012 Optical Society of America
Artikeln behandlar 1900-talets meningskris såsom den återspeglas i Emmanuel Levinas och Hans Jonas tänkande.
This article presents a survey of techniques for ranking results in search engines, with emphasis on link-based ranking methods and the PageRank algorithm. The problem of selecting, in relation to a user search query, the most relevant documents from an unstructured source such as the WWW is discussed in detail. The need for extending classical information retrieval techniques such as boolean sear
Popular Abstract in Swedish Kardiovaskulär sjukdom är ett samlingsnamn för sjukdomar som involverar hjärtat och/eller kärlen. De är orsaken till 41 % av alla dödsfall i Sverige, och 12 % av alla svenskar lider av följderna av dessa sjukdomar. Ateroskleros, som är en kardiovaskulär sjukdom, kan upptäckas redan hos barn. Då ser man ateroskleros som en förändring i kärlväggen (plack) och i detta stadAtherosclerosis is triggered by LDL entrapment in the vessel wall. Oxidation and enzymatic processing of LDL give rise to inflammatory mediators such as lyso-PC. These inflammatory mediators attract monocytes into the vessel wall where they differentiate into macrophages. The macrophages adopt different phenotypes depending on the environment. In vitro, ex vivo, and in vivo studies were combined
Qualitative measurements of both OH and polycyclic aromatic hydrocarbons (PAH) as well as quantitative data of soot volume fraction f(v) have been obtained in vaporized liquid fuels, with the main goal of providing experimental data for combustion models and numerical mechanism validation. Measurements were carried out in a laminar coflow burner which was designed, built and integrated with an eva
