Sökresultat

Filtyp

Din sökning på "*" gav 526411 sökträffar

Relative sea-level changes since 15 000 cal. yr BP in the Nanortalik area, southern Greenland

We present new results for relative sea-level change for Southern Greenland for the interval from 9000 cal. yr BP to the present. Together with earlier work from the same region this yields a nearly complete record from the time of deglaciation to the present. Isolation and/or transgression sequences in one lake and five tidal basins have been identified using lithostratigraphic analyses, sediment

SCHIZOPHRENIA IN A LONGITUDINAL PERSPECTIVE clinical and neurocognitive aspects

Popular Abstract in Swedish Schizofreni är en kronisk och handikappande sjukdom som karakteriseras av allvarliga men fluktuerande symtom, med återkommande akuta episoder. Sjukdomen är förknippad med reducerad kognitiv och social funktionsförmåga. Patienterna vilka i regel insjuknar i unga år, bibehåller vanligtvis kvarstående restsymtom och därmed associerade stigma fram till ålderdomen. Det överObjective: To explore the long-term course and to study factors of potential relevance for the treatment and rehabilitation process of patients with schizophrenia and schizophrenia-like disorders. Specific issues concerned cognitive reduction, tardive dyskinesia (TD), prolactin-induced side effects, remission and lack of insight. Method: A naturalistic multicenter study of 225 patients, diagnosed

InAs epitaxial lateral overgrowth of W masks

The conditions for successful epitaxial lateral overgrowth of W patterns by InAs using low-pressure metalorganic vapour phase epitaxy were studied. The substrates used were InAs (0 0 1) wafers and the range of growth temperatures between 500 and 600 degrees C. The selective growth was investigated as a function of the V/III-ratio on W-ring test structures and wires oriented in different directions

InAs quantum dots grown on InAlGaAs lattice matched to InP

In this paper, we present InAs quantum dots prepared on an InxAlyGa1-x-yAs surface by metal organic vapor phase epitaxy. Atomic force microscopy measurements indicate that dots grown on material with higher Al content are smaller, and that the local dot densities on step-bunched facets formed on the vicinal (0 0 1) surfaces increase. We find that these dots show luminescence at very long wavelengt

Time-domain Fresnel-to-Fraunhofer diffraction with photon echoes

A photon echo experiment in Tm3+:YAG is reported that shows, for the first time to the authors’ knowledge, the time-domain equivalent of the transition from near- to far-field diffraction, including Talbot self-imaging effects. The experiment demonstrates the huge dispersion capability of photon echoes and opens the way to further exploration of space–time duality.

Visual analog scales for interpretation of back and leg pain intensity in patients operated for degenerative lumbar spine disorders

STUDY DESIGN: A prospective observational study of visual analog scale (VAS) scores for pain in patients operated at one institution within the framework of a national registry. OBJECTIVE: To describe the use of recording VAS for pain intensity in patients operated on for lumbar spine problems. SUMMARY OF BACKGROUND DATA: There is no consensus regarding pain outcomes assessment in spine patients.

A structural insight into the inhibition of human and Leishmania donovani ornithine decarboxylases by 1-amino-oxy-3-aminopropane

The critical role of polyamines in key processes such as cell growth, differentiation and macromolecular synthesis makes the enzymes involved in their synthesis potential targets in the treatment of certain types of cancer and parasitic diseases. Here we present a study on the inhibition of human and Leishmania donovani ODC (ornithine decarboxylase), the first committed enzyme in the polyamine bio

A Feasibility Study of Automated Support for Similarity Analysis of Natural Language Requirements in Market-Driven Development

In market-driven software development there is a strong need for support to handle congestion in the requirements engineering process, which may occur as the demand for short time-to-market is combined with a rapid arrival of new requirements from many different sources. Automated analysis of the continuous flow of incoming requirements provides an opportunity to increase the efficiency of the requi

Genetic diversity of the moss Plagiomnium affine in forests of contrasting age.

We screened six populations of the clonal forest floor moss Plagiomnium affine from forests of different ages for genetic variation at 23 allozyme loci. Samples consisting of two adjacent, unconnected shoots were taken at regular intervals along one transect from each population. Transect lengths varied from 22 to 52 m, depending on the size of the local populations. From a sample of 602 shoots, w

Transient waves in nonstationary media

This paper treats propagation of transient waves in nonstationary media, which has many applications in, for example, electromagnetics and acoustics. The underlying hyperbolic equation is a general, homogeneous, linear, first-order 2×2 system of equations. The coefficients in this system depend on one spatial coordinate and time. Furthermore, memory effects are modeled by integral kernels, which,

Arthritis suppression by NADPH activation operates through an interferon-beta pathway

Background: A polymorphism in the activating component of the nicotinamide adenine dinucleotide phosphate (NADPH) oxidase complex, neutrophil cytosolic factor 1 (NCFI), has previously been identified as a regulator of arthritis severity in mice and rats. This discovery resulted in a search for NADPH oxidase- activating substances as a potential new approach to treat autoimmune disorders such as rh