Sökresultat

Filtyp

Din sökning på "*" gav 533532 sökträffar

Monte Carlo calculations of thermal neutron capture in gadolinium : A comparison of GEANT4 and MCNP with measurements

GEANT4 is a Monte Carlo code originally implemented for high-energy physics applications and is well known for particle transport at high energies. The capacity of GEANT4 to simulate neutron transport in the thermal energy region is not equally well known. The aim of this article is to compare MCNP, a code commonly used in low energy neutron transport calculations and GEANT4 with experimental resu

Modelling Change in Ground Vegetation Response to Acid and Nitrogen Pollution, Climate Change and Forest Management in Sweden 1500--2100 a.d.

The ForSAFE model, designed for modelling biogeochemical cycles (water, acidity, base cation, nitrogen and carbon) in terrestrial ecosystems, was modified with a vegetation response module (VEG), incorporating the effects of: nitrogen pollution, acidification, soil moisture, temperature, wind chill exposure, light and shading by trees, grazing by animals, competition between plants, above ground f

Public and Non-Profit Interaction : U.S. Assistance to Eastern European Media 1989-1995

This study explores the relationships among U.S. public and non-profit organizations against the backdrop of the assistance they rendered to news media in Eastern European countries between 1989 and 1995. Ideological and administrative goals and strategies used by organizations such as the Department of State, the USAID, and the USIA, the International Media Fund, the Soros Foundations, the Freedo

Negotiations in Networks in the European Union

Multi-level governance is a term that is commonly used to characterize the nature of the European Union. In this article we argue that multi-level governance requires a research focus on negotiations and networks. Our focus is on day-to-day negotiations rather than ``history-making'' decisions, and we proceed from the assumption that negotiations vary in character across issue areas. After discuss

Controllable oxidation of h-BN monolayer on Ir(111) studied by core-level spectroscopies

The effect of atomic oxygen adsorption on the structure and electronic properties of monolayer hexagonal boron nitride (h-BN) grown on Ir(111) has been studied using near edge X-ray absorption fine structure spectroscopy (NEXAFS), photoelectron spectroscopy (PES), and low-energy electron diffraction (LEED). It has been shown that the oxidation of the h-BN monolayer occurs through a gradual substit

Search for an additional, heavy Higgs boson in the decay channel at in collision data with the ATLAS detector

A search is presented for a high-mass Higgs boson in the , , , and decay modes using the ATLAS detector at the CERN Large Hadron Collider. The search uses proton-proton collision data at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 20.3 fb. The results of the search are interpreted in the scenario of a heavy Higgs boson with a width that is small compared with the

Proteome analysis of the xylose-fermenting mutant yeast strain TMB 3400.

Xylose fermentation in yeast has been a target of research for years, yet not all the factors that may affect xylose fermentation perfomance of yeast strains are known. In this study, the mutant S. cerevisiae strain TMB 3400, which has good xylose fermentation properties, was compared with its parental strain to examine the factors behind the improved xylose utilization at protein level. The prote

Mossfloran på Ölands alvar – ett nytt inventeringsprojekt.

In 2011 a field survey of the bryophyte vegetation and flora of Stora Alvaret, the largest continuous alvar area in Sweden situated on the Baltic island of Öland (SE Sweden), was initiated. A number of transects crossing the alvar area from west to east will be surveyed. The aim of the investigation is to try and elucidate the realtionship between the bryophyte flora and environmental parameters s

The quality movement: where are you going?

The aim of this article is to reflect on the evolution of total quality management (TQM) as the most widespread quality management approach during the last 25 years. However, during the first 10 years of the new millennium, the term TQM seems to have lost its attractiveness in Western parts of the world and instead new terms such as Business Excellence, Organisational Excellence, Six Sigma, and Le

Minimally modified LDL upregulates endothelin type B receptors in rat coronary artery via ERK1/2 MAPK and NF-kappa B pathways

Minimally modified low density lipoprotein (mmLDL) is a well-known risk factor for coronary artery disease. Upregulation of vascular endothelin type B (ETB) receptors on the vascular smooth muscle cells is predicted to be the molecular mechanism that leads to cardiovascular pathogenesis. The objective of the present study was to examine the hypothesis that mmLDL upregulates ETB receptors in rat co

Det kodade meddelandet - Metaforisk interaktion och dödslängtan i Per Olov Enquists Nedstörtad ängel

Per Olov Enquist's 1985 novel Nedstörtad ängel (Downfall) is, despite its modest proportions, one of the most poetically powerful and intriguing works in his oeuvre. It consists of a number of disparate stories which are presented as intertwined fragments. In this article I argue that the novel as a whole creates its meaning in the manner of a large-scale metaphor, in which the different stories s

Design and operation of a bench-scale process development unit for the production of ethanol from lignocellulosics

A bench-scale unit for the development of an enzymatic process for the bioconversion of lignocellulosics to ethanol has been used to study the recycling of waste-water streams to minimize fresh-water requirements and reduce effluent streams. Willow, after impregnation with sulphur dioxide, was steam-pretreated, enzymatically hydrolysed, and the sugars produced were fermented using S. cerevisiae. T

Cloning and characterization of cDNA encoding a novel human leukotriene B(4) receptor

By homology screening using BLAST searches of expressed sequence tags (ESTs), we have found a previously unidentified cDNA encoding a putative seven-transmembrane receptor with highest similarity to the leukotriene B(4) receptor, BLTR. Analysis of calcium flow in transfected cells, along with sequence analysis, revealed that the EST encoded a functionally inactive protein, lacking the segment corr