Sökresultat

Filtyp

Din sökning på "*" gav 533227 sökträffar

Introduction to suspension levels: radiotherapy

In 2007, the European Commission (EC) commissioned a group of experts to undertake the revision of Report Radiation Protection (RP 91) oCriteria for acceptability of radiological (including radiotherapy) and nuclear medicine installations' written in 1997(( 1)). The revised draft report was submitted to the EC in 2010, who issued it for public consultation. The EC has commissioned the same group o

The COST 2100 Channel Model: Parameterization and Validation Based on Outdoor MIMO Measurements at 300 MHz

The COST 2100 channel model is a geometry based stochastic channel model (GSCM) for multiple-input multiple-output (MIMO) simulations. This paper presents parameterization and validation of the channel model for peer-to-peer communication in the 300 MHz band. Measurements were carried out in outdoor environments for both line-of-sight (LOS) and non line-of-sight (NLOS) scenarios. The COST 2100 cha

Delrapport: Test av vägledande system i en tunnel

I följande delrapport redogörs övergripande för förutsättningarna och delar av resultaten efter ett utrymningsförsök som genomfördes den 1-3 juli år 2014 i vägtunneln Norra länken i Stockholm. Syftet med försöket var i huvudsak att undersöka hur personer på bästa sätt kan ledas till en motstående tunnelvägg med utrymningsvägar i en rökfylld tunnel. Försöket syftade även till att kvantifiera med vi

No title

This article focuses on the roles played by the female characters in three of the most influential indigenista novels, Raza de bronce (1918) by the Bolivian author Alcides Arguedas, Huasipungo (1934) by Jorge Icaza, from Ecuador, and El mundo es ancho y ajeno (1941) by the Peruvian writer Ciro Alegría. The roles of the female characters are studied from the perspective of Mikhail Bakhtin’s notion

Konsten att lyckas som par : Populärterapeutiska berättelser, individualisering och kön

Popular Abstract in Swedish Avhandlingen fokuserar den framväxande populärterapeutiska kulturen om och för heterosexuella par. Tre fallstudier har utförts; självhjälpsböcker för par, tv-program med relationsfokus samt diskussionsforum på Internet, kopplade till tv-programmen. Den populärterapeutiska kulturen analyseras och diskuteras i relation till teorier om vardagens psykologisering, samt teoriIn this thesis, the expanding discourse of popular therapeutic culture on and for heterosexual couples is analysed. Three case studies have been carried out; self-help books for couples, TV programs with relationship-focus, and web discussion boards connected to the TV programs. The analysis is made in relation to sociological theories of individualization, therapeutic culture, feminist studies of

Energy balance and global warming potential of biogas-based fuels from a life cycle perspective

Biogas is a multifunctional energy carrier currently used for co-generation or compressed biomethane as vehicle fuel. Gas-to-liquid (GTL) technology enables conversion of biogas into other energy carriers with higher energy density, facilitating fuel distribution. The energy efficiency and global warming potential (GWP) for conversion of biogas to compressed biogas (CBG), liquefied biogas (LBG),

Det monumentala Washington

Recension av Kirk Savage, Washington D.C., the National Mall, and the Transformation of the Memorial Landscape.

Towards a molecular understanding of symbiont function: Identification of a fungal gene for the degradation of xylan in the fungus gardens of leaf-cutting ants

Background Leaf-cutting ants live in symbiosis with a fungus that they rear for food by providing it with live plant material. Until recently the fungus' main inferred function was to make otherwise inaccessible cell wall degradation products available to the ants, but new studies have shed doubt on this idea. To provide evidence for the cell wall degrading capacity of the attine ant symbiont, we

Two-pion femtoscopy in p-Pb collisions at root(NN)-N-S=5.02 TeV

We report the results of the femtoscopic analysis of pairs of identical pions measured in p-Pb collisions at root(NN)-N-S = 5.02 TeV. Femtoscopic radii are determined as a function of event multiplicity and pair momentum in three spatial dimensions. As in the pp collision system, the analysis is complicated by the presence of sizable background correlation structures in addition to the femtoscopic

Not Innocent: Verdict from Ab Initio Multiconfigurational Second-Order Perturbation Theory on the Electronic Structure of Chloroiron Corrole

From a suitably broad perspective, transition metal corroles may be viewed as stable, synthetic analogues of high-valent heme protein intermediates such as compounds I and II. Against this backdrop, the electronic structure of chloroiron corrole has provoked a lively debate in recent years. Thus, whereas NMR spectroscopy and DFT calculations suggest an S = 3/2 Fe(III) corrole(center dot 2-) radica

Given breast cancer, is fat better than thin? Impact of the estrogen receptor beta gene polymorphisms.

The role of estrogen receptor beta (ERβ) in breast cancer has been investigated since its identification in 1996. Studies based on protein expression have indicated that ERβ is a favorable prognostic marker. Further, ERβ expression is lower in obese breast cancer patients. Fewer studies have focused on the prognostic impact of ERβ polymorphisms. Therefore, we analyzed the associations between four

Filter-exchange PGSE NMR determination of cell membrane permeability.

A new PGSE NMR sequence is introduced for measuring diffusive transport across the plasma membrane of living cells. A "diffusion filter" and a variable mixing time precedes a standard PGSE block for diffusion encoding of the NMR signal. The filter is a PGSE block optimized for selectively removing the magnetization of the extracellular water. With increasing mixing time the intra- and extracellula

Direct photon production in d+Au collisions at root s(NN)=200 GeV

Direct photons have been measured in root s(NN) = 200 GeV d + Au collisions at midrapidity. A wide p(T) range is covered by measurements of nearly real virtual photons (1 < p(T) < 6 GeV/c) and real photons (5 < p(T) < 16 GeV/c). The invariant yield of the direct photons in d + Au collisions over the scaled p + p cross section is consistent with unity. Theoretical calculations assuming standard col

Variation in the MC4R Gene Is Associated with Bone Phenotypes in Elderly Swedish Women.

Osteoporosis is characterized by reduced bone mineral density (BMD) and increased fracture risk. Fat mass is a determinant of bone strength and both phenotypes have a strong genetic component. In this study, we examined the association between obesity associated polymorphisms (SNPs) with body composition, BMD, Ultrasound (QUS), fracture and biomarkers (Homocysteine (Hcy), folate, Vitamin D and Vit

Molecular Genetic Characterization of Acute Lymphoblastic Leukemia with a Poor Prognosis

Popular Abstract in Swedish Leukemi kännetecknas av en okontrollerad tillväxt av omogna vita blodkroppar och orsakas av förvärvade genetiska förändringar. Genetiska förändringar eller avvikelser, som är drivande i cancerutvecklingen, uppstår när normala celler delar sig. Identifiering av sådana förändringar på gen-och kromosomnivå är av stor klinisk betydelse. Behandling styrs av vilka genetiska aAcute lymphoblastic leukemia (ALL) affects individuals at all ages, with peak incidences in children 50 years. ALL is broadly categorized into B-cell precursor (BCP) and T-cell ALL with specific clinical features associated with outcome. In contrast to pediatric ALL, which has a favorable prognosis, adult ALL is associated with a much poorer outcome with less than 40% overall survival rates, decre

Enhanced performance in pervaporation of supercritical carbon dioxide treated poly[1-(trimethylsilyl)-1-propyne] membranes

The effect of a supercritical carbon dioxide (scCO(2)) treatment on the free volume of poly[1-(trimethylsilyl)-1-propyne] (PTMSP) and PTMSP-silica nanohybrid membranes was investigated with positron annihilation lifetime spectroscopy (PALS) and correlated with their performance in pervaporation. Treatment of dense unfilled PTMSP and silica filled PTMSP (2.5, 10 and 20 wt.% silica) membranes with s

Island biology and morphological divergence of the Skyros wall lizard Podarcis gaigeae: a combined role for local selection and genetic drift on color morph frequency divergence?

BACKGROUND: Patterns of spatial variation in discrete phenotypic traits can be used to draw inferences about the adaptive significance of traits and evolutionary processes, especially when compared to patterns of neutral genetic variation. Population divergence in adaptive traits such as color morphs can be influenced by both local ecology and stochastic factors such as genetic drift or founder ev

The transition from a molecular to a continuum solvent in electrical double layers showing ion-ion correlation effects.

We analyze, using Monte Carlo simulations, how a dielectric medium, modeled as a Stockmayer fluid, modulates the force between two similarly charged surfaces. A major objective is to provide a basis for understanding the strengths and weaknesses of the primitive model. The system studied has uniformly charged walls separated by counterions and solvent, where the latter is kept at constant chemical