Search results

Filter

Filetype

Your search for "*" yielded 535858 hits

Core and valence exciton formation in x-ray absorption, x-ray emission and x-ray excited optical luminescence from passivated Si nanocrystals at the Si L-2,L-3 edge

Resonant inelastic x-ray scattering (RIXS), x-ray absorption spectroscopy and x-ray excited optical luminescence (XEOL) have been used to measure element specific filled and empty electronic states over the Si L-2,L-3 edge of passivated Si nanocrystals of narrow size distribution ( diameter 2.2 +/- 0.4 nm). These techniques have been employed to directly measure absorption and luminescence specifi

The adult human brain harbors multipotent perivascular mesenchymal stem cells.

Blood vessels and adjacent cells form perivascular stem cell niches in adult tissues. In this perivascular niche, a stem cell with mesenchymal characteristics was recently identified in some adult somatic tissues. These cells are pericytes that line the microvasculature, express mesenchymal markers and differentiate into mesodermal lineages but might even have the capacity to generate tissue-speci

Integrating Open Access Geospatial Data to Map the Habitat Suitability of the Declining Corn Bunting (Miliaria calandra)

The efficacy of integrating open access geospatial data to produce habitat suitability maps for the corn bunting (Miliaria calandra) was investigated. Landsat Enhanced Thematic Mapper Plus (ETM+), Shuttle Radar Topography Mission (SRTM) and Corine (Coordination of Information on the Environment) land cover data for the year 2000 (CLC2000) were processed to extract explanatory variables and divided

High-resolution crystal structures of the flavoprotein NrdI in oxidized and reduced states - an unusual flavodoxin: Structural biology.

The small flavoprotein NrdI is an essential component of the class Ib ribonucleotide reductase system in many bacteria. NrdI interacts with the class Ib radical generating protein NrdF. It is suggested to be involved in the rescue of inactivated diferric centres or generation of active dimanganese centres in NrdF. Although NrdI bears a superficial resemblance to flavodoxin, its redox properties ha

Diet, Health and Agriculture : The Late Neolithic-Early Bronze Age Example of Abbekås, Southern Sweden

Diet and health during the Late Neolithic and Early Bronze Age Scandinavia have never been under systematic study. Still, high statures have been reported from osteologists, statures that indicate good health. This article is based on a pilot study examining health changes in relation to dietary changes due to intensified agriculture and the possible Secondary Products Revolution as discussed by S

Gender differences in lumbar disc herniation surgery

BACKGROUND AND PURPOSE: Although there have been numerous publications on lumbar disc herniation (LDH) treated surgically, there has been little interest in sex differences. It has been shown in many studies that sex differences may be important in certain diseases. We therefore reviewed consecutive register material from one institution for possible gender differences in pre- and postoperative pa

Pooling control in variable preparative chromatography processes.

Preparative chromatographic columns that run at high loads are highly sensitive to batch-to-batch disturbances of the process parameters, placing high demands on the strategy used for pooling of the product fractions. A new approach to pooling control is presented in a proof-of-concept study. A model-based sensitivity analysis was performed identifying the critical process parameters to product pu

Mellan makten och himmelriket : perspektiv på Hallands medeltida kyrkor.

The aim of the thesis is to discuss church building, the architectural design of Romanesque and Gothic churches and the use and symbolic interpretation of church buildings in the medieval period. It is suggested that churches were built for a variety of reasons, that the construction process may have been complicated and that the final result was not always the expected one. Many social groups wer

Improvement in survival of diffuse large B-cell lymphoma in relation to age, gender, International Prognostic Index and extranodal presentation: a population based Swedish Lymphoma Registry study

Our aim was to describe a large population-based cohort of diffuse large B-cell lymphoma (DLBCL) during the last decade, evaluating possible improvement in survival and to identify subgroups in need of novel treatment strategies. The study population encompassed all patients diagnosed with DLBCL in Sweden from 2000 through 2010. Altogether 5349 patients were identified. There was no increase in in

Karl Pearson and the Scandinavian school of statistics

The relationship between Karl Pearson and the Scandinavian statisticians was more of a competitive than a collaborative nature. We describe the leading statisticians and stochasticists of the Scandinavian school, and relate some of their work to the work of Pearson.

On Robotic Work-Space Sensing and Control

Industrial robots are fast and accurate when working with known objects at precise locations in well-structured manufacturing environments, as done in the classical automation setting. In one sense, limited use of sensors leaves robots blind and numb, unaware of what is happening in their surroundings. Whereas equipping a system with sensors has the potential to add new functionality and increase

Att skapa och marknadsföra plats med hjälp av fiktion

Travel in the footsteps of cinema is an expanding market, both in Sweden and internationally. Travel habits are changing, and the fact of a good number of people planning their journeys in order to follow in the footsteps of fictitiousn characters, or alternatively follow a particular route in order to experience first-hand something they saw at the cinema or on television, has become an important

No title

This paper is the state of the art of charcoal signal studies (macro-, meso- and micro-charcoal) that have been carried out at the Epigravettian settlement of Mezhyrich. This work took part of the French ANR project "Mammouths". Charcoal signals have been found in both natural and archaeological (pits and activity areas) deposits that have been sampled during the 2007-2008 archaeological excavatio

A Structural Disanalogy between Aesthetic and Ethical Value Judgements

It is often suggested that aesthetic and ethical value judgements are similar in such a way that they should be analysed in analogous manners. In this paper, I argue that the two types of judgements share four important, features concerning disagreement, motivation, categoricity, and argumentation. This, I maintain, helps to explain why many philosophers have thought that aesthetic and ethical val

Non-suicidal self-injury in adolescents: Support for a specific distress – function relationship.

Background: This study has investigated the specific relationship between childhood adversities, individual trauma symptoms and the functions of non-suicidal self-injury (NSSI). The aim was to examine whether different self-reported adverse experiences and trauma symptoms predict the need to engage in NSSI, either to regulate emotions or to communicate with and influence others. Method: The partic