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In search of features that constitute an "enriched environment" in humans : Associations between geographical properties and brain structure

Enriched environments elicit brain plasticity in animals. In humans it is unclear which environment is enriching. Living in a city has been associated with increased amygdala activity in a stress paradigm, and being brought up in a city with increased pregenual anterior cingulate cortex (pACC) activity. We set out to identify geographical characteristics that constitute an enriched environment aff

A codon window in mRNA downstream of the initiation codon where NGG codons give strongly reduced gene expression in Escherichia coli

The influences on gene expression by codons at positions +2, +3, +5 and +7 downstream of the initiation codon have been compared. Most of the +2 codons that are known to give low gene expression are associated with a higher expression if placed at the later positions. The NGG codons AGG, CGG, UGG and GGG, but not GGN or GNG (where N is non-G), are unique since they are associated with a very low g

Inverted cultures in the pictorial ceremonial of the suicide bomber: The case of Reem Raiyshi

On the 24th of January in 2004 a portrait of Reem Raiyshi and her son was published in the Swedish newspaper Aftonbladet. In a short notice the reader was informed that on the 14th of January Reem Raiyshi had killed herself in a terrorist attack at a border crossing between Israel and Gaza. The picture, a still frame from a video, was bought by Aftonbladet from AFP, but has also circulated on the

Shelf-life variations in pallet unit loads during perishable food supply chain distribution

This paper presents an experimental study of the thermal inertia of a pallet loaded with returnable plastic crates containing primary packages of smoked ham. Based on this, food quality variations within the pallet were also investigated. Thermal time constants from 83 sensor locations were identified by studying the temperature changes when the pallet was exposed to instant temperature drops (16

The role of charge and proton transfer in fragmentation of hydrogen-bonded nanosystems : The breakup of ammonia clusters upon single photon multi-ionization

The charge and proton dynamics in hydrogen-bonded networks are investigated using ammonia as a model system. The fragmentation dynamics of medium-sized clusters (1-2 nm) upon single photon multi-ionization is studied, by analyzing the momenta of small ionic fragments. The observed fragmentation pattern of the doubly- and triply-charged clusters reveals a spatial anisotropy of emission between frag

Developmental Universities in Inclusive Innovation Systems : Alternatives for Knowledge Democratization in the Global South

This book analyzes the current trends in the production, dissemination, and use of knowledge which contribute to social inequalities, especially in the Global South. The aim of the text is to explore the possibilities of active involvement by universities in the democratization of knowledge - a process by which people will be able to more easily acquire and utilize knowledge, as well as the result

Processing and characterization of nanowire arrays for photodetectors

We present a fabrication scheme of contacting arrays of vertically standing nanowires (NW) for LEDs (Duan et al. Nature 409:66–69, 2001), photodetectors (Wang et al. Science (NY) 293:1455–1457, 2001) or solar cell applications (Wallentin et al. Science (NY) 339:1057–1060, 2013). Samples were prepared by depositing Au films using nano-imprint lithography (Ma rtensson et al. Nano Lett 4:699–702, 200

Experimental and numerical investigation on fire behaviour of foam/fabric composites

Upholstered furniture is a major contributor to the fuel load in a fire compartment. Modelling the fire behaviour of upholstered furniture would support performance based fire safety engineering, by allowing the specification of realistic fire scenarios. Modelling upholstered furniture composites in cone calorimeter test conditions is undertaken to validate fundamental assumptions about the fire b

Characteristics of BVOC emissions from a Swedish boreal forest : Using chambers to capture biogenic volatile organic compounds (BVOCs) from trees and forest floor

Plant-emitted biogenic volatile organic compounds (BVOCs) are a large group of hydrocarbons released by plant leaves, bark, flowers and fruits into the atmosphere and from plant roots into the soil. BVOCs have important physiological and ecological functions, such as mediating within-plant and plant-plant communication, defense against herbivores attack, protection against heat or other oxidative

Studies on translation initiation and gene expression in Escherichia coli

In prokaryotes, several mRNA sequences surrounding the initiation codon have been found to influence the translation process; these include the downstream region and its codon context, the Shine-Dalgarno sequence and the S1 ribosomal protein-binding site. In this thesis, the purpose has been to study the role of the downstream region and Shine-Dalgarno-like sequences on early translation elongatio

Illusion

Essän handlar om trädgårdsstaden Tungelsta, idén om eremitens hydda, trädgården och platsen.

Two types of muscarinic acetylcholine receptors in Drosophila and other arthropods

Muscarinic acetylcholine receptors (mAChRs) play a central role in the mammalian nervous system. These receptors are G protein-coupled receptors (GPCRs), which are activated by the agonists acetylcholine and muscarine, and blocked by a variety of antagonists. Mammals have five mAChRs (m1-m5). In this study, we cloned two structurally related GPCRs from the fruit fly Drosophila melanogaster, which,

Exploration of H2 binding to the [NiFe]-hydrogenase active site with multiconfigurational density functional theory

The combination of density functional theory (DFT) with a multiconfigurational wave function is an efficient way to include dynamical correlation in calculations with multiconfiguration self-consistent field wave functions. These methods can potentially be employed to elucidate reaction mechanisms in bio-inorganic chemistry, where many other methods become either too computationally expensive or t

In Operando X-Ray Nanodiffraction Reveals Electrically Induced Bending and Lattice Contraction in a Single Nanowire Device

Hard X-ray diffraction (XRD) using a nanofocused beam is used to measure both lattice contraction and bending in a single nanowire device under electric bias. The shape of the nanowire is reconstructed in 3D with sub-nanometer precision. As the bias voltage is gradually increased, nonreversible structural changes in the contact regions are observed, correlated with degradation of the electrical co

Simultaneous high-resolution scanning Bragg contrast and ptychographic imaging of a single solar cell nanowire

Simultaneous scanning Bragg contrast and small-angle ptychographic imaging of a single solar cell nanowire are demonstrated, using a nanofocused hard X-ray beam and two detectors. The 2.5 μm-long nanowire consists of a single-crystal InP core of 190 nm diameter, coated with amorphous SiO2 and polycrystalline indium tin oxide. The nanowire was selected and aligned in real space using the small-angl

Discfiltration and ozonation for reduction of nutrients and organic micro-pollutants from wastewater - a pilot study

The combination of coagulation/flocculation and discfiltration with ozonation to reduce nutrients and organic micro-pollutants in secondary effluent was studied in pilot scale at Lundåkraverket wastewater treatment plant in Landskrona, Sweden. With a chemical dose of 4 gAl3þ/m3 and 1.5 g/m3 cationic polymer as active material effluent water quality with regards to total phosphorous (Tot-P), suspenThe combination of coagulation/flocculation and discfiltration with ozonation to reduce nutrients and organic micro-pollutants in secondary effluent was studied in pilot scale at Lundåkraverket wastewater treatment plant in Landskrona, Sweden. With a chemical dose of 4 gAl3+/m3 and 1.5 g/m3 cationic polymer as active material effluent water quality with regards to total phosphorous (Tot-P), suspen

Châteaux disparus, temps perdus : namnen och frånvaron

Holst-Ekströms bidrag är en essä som handlar om ett antal franska slott, från 1700 och 1800-talen, om minnets roll i förhållande till arkitekturen och litteraturen. Den behandlar också konstnären Marie Anderssons specifika relation till fotografi och arkitektur.This essay is about a number of French castles, from the 18th and 19th centuries, it concerns the rôle of architecture in relation to memory and litterature. It is also about the specific works of artist Marie Andersson, and how she photography and architecture.