Sökresultat

Filtyp

Din sökning på "*" gav 529814 sökträffar

A new material for hydrogen storage; ScAl0.8Mg0.2

A novel aluminium rich alloy for hydrogen storage has been discovered, ScAl0.8Mg0.2, which has very promising properties regarding hydrogen storage capacity, kinetics and stability towards air oxidation in comparison to hydrogen absorption in state-of-the-art intermetallic compounds. The absorption of hydrogen was found to be very fast, even without adding any catalyst, and reversible. The discove

Fenestrated and branched technology: what's new?

This review article presents the latest published clinical series evaluating fenestrated and branched endografts for the treatment of complex aortic aneurysms incorporating the visceral branches, iliac arteries and supra-aortic trunks. In addition, an overview of the recent developments in devices and imaging modalities is also proposed.

The burden, distribution and risk factors for cervical oncogenic human papilloma virus infection in HIV positive Nigerian women

Background: The expected reduction in cervical cancer incidence as a result of increased access to antiretroviral therapy is yet to be seen. In this study we investigated the effect of HIV infection and treatment on high-risk (hr) human papilloma virus (HPV) prevalence and distribution. Methods: Cervical cells from 515 (220 HIV positive and 295 HIV negative) women, recruited during community cervi

Infection with Hepatitis B and C Viruses and Risk of Lymphoid Malignancies in the European Prospective Investigation into Cancer and Nutrition (EPIC)

Background: Case-control studies suggested a moderate, but consistent, association of hepatitis C virus (HCV) infection with lymphoid tissue malignancies, especially non-Hodgkin lymphoma (NHL). More limited data suggested that hepatitis B virus (HBV) infection might also be associated with NHL. However, prospective studies on the topic are few. Methods: A nested case-control study was conducted in

Monitoring of technical variation in quantitative high-throughput datasets.

High-dimensional datasets can be confounded by variation from technical sources, such as batches. Undetected batch effects can have severe consequences for the validity of a study's conclusion(s). We evaluate high-throughput RNAseq and miRNAseq as well as DNA methylation and gene expression microarray datasets, mainly from the Cancer Genome Atlas (TCGA) project, in respect to technical and biologi

Using odour traps for population monitoring and dispersal analysis of the threatened saproxylic beetles Osmoderma eremita and Elater ferrugineus in central Italy

Pheromone-based monitoring could be a very efficient method to assess the conservation status of rare and elusive insect species, but there are still few studies for which pheromone traps have been used to obtain information on presence, abundance, phenology and movements of such insects. We performed a mark-recapture study of two threatened saproxylic beetles, Osmoderma eremita (Scarabaeidae) and

Evaluating the Governance Model of Hardware-Dependent Software Ecosystems – A Case Study of the Axis Ecosystem

Ecosystem governance becomes gradually more relevant for a set of companies or actors characterized by symbiotic relations evolved on the top of a technological platform, i.e. a software ecosystem. In this study, we focus on the governance of a hardware-dependent software ecosystem. More specifically, we evaluate the governance model applied by Axis, a network video and surveillance camera produce

Effect of particle size in chocolate shell on oil migration and fat bloom development

The effects of chocolate shell particle size were investigated by means of its influence on rate of oil migration and fat bloom development. The particle size of the non-fat particles in the chocolate, i.e. sugar and cocoa particles was varied between 15, 22 and 40 mu m. A novel set of analytical techniques was used and by combining migration results with surface topology results clear differences

EFFECT OF PHYSICOCHEMICAL PROPERTIES ON THE SENSORY PERCEPTION OF THE TEXTURE OF HOMOGENIZED FRUIT AND VEGETABLE FIBER SUSPENSIONS

In this study the effects of degree of homogenization and concentration of insoluble material on the perceived texture of apple, tomato, potato pulp and carrot fiber suspensions have been investigated. This was done using a descriptive sensory analysis with the attributes melting, slippery, crispy, grainy and thick. The texture attributes were then correlated to the physicochemical properties of t

Miniaturized antennas for link between binaural hearing aids

We have investigated the possibility of using the 2.45 GHz ISM band for communication between binaural hearing aids. The small size of a modern hearing aid makes it necessary to miniaturize the antennas to make this feasible. Two different types of hearing aid placements have been investigated: in the outer ear and in the ear canal. Both put strict demands on the size of the antenna, which have be

Overcoming recruitment barriers revealed high readiness to participate and low dropout rate among people with schizophrenia in a randomized controlled trial testing the effect of a Guided Self-Determination intervention

Background: Recruitment is one of the most serious challenges in performing randomized controlled trials. Often clinical trials with participants diagnosed with schizophrenia are terminated prematurely because of recruitment challenges resulting in a considerable waste of resources in the form of time, funding, and the participants' efforts. Dropout rates in schizophrenia trials are also high. Rec

Presence of Eriophorum scheuchzeri enhances substrate availability and methane emission in an Arctic wetland

Here we present results from a field experiment in an Arctic wetland situated in Zackenberg, NE Greenland. During one growing season we investigated how dominance of the sedge Eriophorum scheuchzeri affected the below-ground concentrations of low molecular weight carbon compounds (LMWOC) and the fluxes of CO2 and CH4 in comparison to dominance of other sedges (Carex stans and Dupontia psilosantha)

Responsibility for managing musculoskeletal disorders - A cross-sectional postal survey of attitudes

Background: Musculoskeletal disorders are a major burden on individuals, health systems and social care systems and rehabilitation efforts in these disorders are considerable. Self-care is often considered a cost effective treatment alternative owing to limited health care resources. But what are the expectations and attitudes in this question in the general population? The purpose of this study w

Improving waviness of bore in precision hard turning by pressurized coolant

Precision hard turning is an emerging innovated machining technology for machining hardened workpiece (60 similar to 62 HRC) with characteristic of better flexibility, high production rate, and cost saving. However, one of problem in this process is that it is difficult to remove the thermal distortion of the workpiece induced by the heat generated during the process, especially in the case of pre

Suspect, detainee, or victim? A discourse analytical study of men's vulnerability in Thailand's deep south

The purpose of this thesis is to explore discourses of insecurity, vulnerability and conflict in Thailand’s Deep South. In order to understand how such discourses are shaped by gender ideologies, the study examines how ideas about men and women are articulated, reproduced and challenged in Thai civil society. Special attention is given to the ways in which men and masculinity are constructed withi

Phosphorylation-dependent regulation of excitation energy distribution between the two photosystems in higher plants

Phosphorylation-dependent movement of the light-harvesting complex II (LHCII) between photosystern II (PSII) and photosystem I (PSI) takes place in order to balance the function of the two photosystems. Traditionally, the phosphorylatable fraction of LHCII has been considered as the functional unit of this dynamic regulation. Here, a mechanical fractionation of the thylakoid membrane of Spinacia o