Sökresultat

Filtyp

Din sökning på "*" gav 534747 sökträffar

An integral equation method dealing with surface waves on large finite periodic structures

We present a method for studying large finite periodic structures using software developed for infinite periodic structures. The method is based on the Floquet-Bloch transformation, which splits the spatial description into one microscopic spatial variable inside the unit cell, and one macroscopic wave vector describing the variations on a scale encompassing many unit cells. The resulting algorith

Dry release of suspended nanostructures

A dry release method for fabrication of suspended nanostructures is presented. The technique has been combined with an anti-stiction treatment for fabrication of nanocantilever based nanoelectromechanical systems (NEMS). The process combines a dry release method, using a supporting layer of photoresist which is removed using oxygen ashing in a reactive ion etcher (RIE), with CHF3 plasma induced de

Asymptomatic atherosclerosis and myocardial infarction: Risk modified by ability to adapt to stressful situations. Results from prospective cohort study "Men born in 1914", Malmo, Sweden

Background: The purpose of this study was to investigate whether different behaviors in a stressful situation modify the risk of atherosclerosis in association with a myocardial infarction, cardiovascular mortality, and all-cause mortality. Many individuals have atherosclerotic changes in their arteries but may never experience any symptoms nor develop cardiovascular disease. A myocardial infarcti

Sulindac induces apoptosis, inhibits proliferation and activates caspase-3 in Hep G2 cells

Background: It has recently been reported that sulindac has an apoptotic effect on KYN-2 cells, an undifferentiated hepatoma cell line. The present work investigates whether sulindac also has an apoptotic effect on well-differentiated hepatoma cells and what its potential mechanism might be. Materials and Methods: Hep G2 cells were treated with sulindac at different concentrations. Apoptosis rate,

Imitating Private Business in Public Procurement: Swedish "affärsmässighet".

While implementing the EC Procurement Directives in Swedish legislation, there remains a reference to 'business-like' (affärsmässig) practice as an external system of norms. The problem is that the term a. might contradict non-economic considerations in the award of contracts. Municipal procurement is often managed by professionals with limited legal expertise, and diverging practices are found. I

Characterization of serum antibody response to chlamydiae in patients with sexually acquired reactive arthritis

Sera from patients with sexually acquired reactive arthritis (SARA) with antibodies reacting with C. trachomatis and C. pneumoniae (group 1; n = 20) and also with C. psittaci (group 2; n = 19) were analyzed for antibody specificity. Sera from group 2 reacted significantly more often with C. trachomatis serotype E, H and K and had higher antibody titers to serotype E, as tested by microimmunofluore

The astrometric instrument of Gaia: Principles

Compared with Hipparcos, Gaia will give an enormous improvement in accuracy, completeness and number of stars: about two orders of magnitude in accuracy, four orders in number, and a completeness limit that is 12 magnitudes fainter. How is all this possible? The answer is: by a combination of many factors, the most important being bigger and more efficient detectors, and bigger optics. The method

The diving behaviour of green turtles undertaking oceanic migration to and from Ascension Island: dive durations, dive profiles and depth distribution

Satellite telemetry was used to record the submergence duration of green turtles (Chelonia mydas) as they migrated from Ascension Island to Brazil (N=12 individuals) while time/depth recorders (TDRs) were used to examine the depth distribution and dive profiles of individuals returning to Ascension Island to nest after experimental displacement (N=5 individuals). Satellite telemetry revealed that

Making and sharing the space: initiatives for story-sharing and reconciliation among women and men in South Africa and Northern Ireland

In this article I present findings from my earlier research on reconciliation in South Africa and Northern Ireland, together with some issues raised by my current research project on “reconciliation in South Africa from women’s perspectives”. Reconciliation is seen as a process whereby the diverse “moral landscapes” held in a war-torn society are addressed, with the aim of building, rebuilding or

Dexamethasone affects inflammation but not trypsinogen activation in experimental acute pancreatitis

Background/Aims: Trypsinogen activation and inflammation are early events in acute pancreatitis. This experimental study aimed to show the effects of dexamethasone on them. Methods: Cerulein and taurocholate pancreatitis were induced in 2 groups of 12 Wistar rats each. Six animals per group were injected with dexamethasone 1 h prior to the induction of acute pancreatitis. Amylase, phospholipase A2

Strain distributions in lattice-mismatched semiconductor core-shell nanowires

The authors study the elastic deformation held in lattice-mismatched core-shell nanowires with single and multiple shells. The authors consider infinite wires with a hexagonal cross section under the assumption of translational symmetry. The strain distributions are found by minimizing the elastic energy per unit cell using the finite element method. The authors find that the trace of the strain i

Prioritization and resource allocation in health care. The views of older people receiving continuous public care and service.

Objective To describe the views of people, 65 years and over, receiving continuous public care and service, on prioritization and resource allocation in health care, in relation to gender, age, housing, health-related quality of life (QoL) and degree of activities of daily living (ADL) dependency. Background How older people receiving continuous public care and service view prioritization and res

Identification of Y589 and Y599 in the juxamembrane domain of Flt3 as ligand-induced autophosphorylation sites involved in binding of Src family kinases and the protein tyrosine phosphatase SHP2

Early signal relay steps upon ligand binding to the receptor tyrosine kinase Flt3, i.e. sites of Flt3 autophosphorylation and subsequent docking partners, are mainly unresolved. By immunoprecipitation of specific tryptic peptides contained in the juxtamembrane region of human Flt3 and subsequent radiosequencing we identified the tyrosine residues 572, 589, 591 and 599 as in vivo autophosphorylatio