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Spatially resolved Hall effect measurement in a single semiconductor nanowire

Efficient light-emitting diodes and photovoltaic energy-harvesting devices are expected to play an important role in the continued efforts towards sustainable global power consumption. Semiconductor nanowires are promising candidates as the active components of both light-emitting diodes and photovoltaic cells, primarily due to the added freedom in device design offered by the nanowire geometry. H

Spatio-temporal patterns of intentional fires,social stress and socio-economic determinants: A case study of Malmö,Sweden

Since the end of the 1990s, the number of fires has increased dramatically in Malmö, a city in the southernmost part of Sweden. Between 1998 and 2009, the increase was 215%, and a large number of the fires were intentional. The aim of this paper is to deepen our understanding of the underlying causes of the spatial and spatio-temporal distribution of intentional fires in Malmö, and to analyse how

Activation of the contact system at the surface of Fusobacterium necrophorum: a possible virulence mechanism in Lemierre's syndrome.

Fusobacterium necrophorum causes Lemièrre's syndrome, a serious disease with septic thrombophlebitis of the internal jugular vein, pulmonary involvement and systemic inflammation. The contact system is a link between inflammation and coagulation and contact activation by the bacteria could therefore contribute to the abnormal coagulation and inflammation seen in patients with Lemièrre's syndrome.

Perfusion MRI of brain tumours: a comparative study of pseudo-continuous arterial spin labelling and dynamic susceptibility contrast imaging

The purpose of this study was to compare the non-invasive 3D pseudo-continuous arterial spin labelling (PC ASL) technique with the clinically established dynamic susceptibility contrast perfusion magnetic resonance imaging (DSC-MRI) for evaluation of brain tumours. A prospective study of 28 patients with contrast-enhancing brain tumours was performed at 3 T using DSC-MRI and PC ASL with whole-brai

A new spectrophotometric method for improved indirect measurement of low levels of vitellogenin using malachite green

Vitellogenin (VTG) is a well-known biomarker for endocrine disruption and the measurement of alkali-labile protein bound phosphate (ALP) has been used as an indirect quantification method for VTG in fish, clam and mussel. One limitation of the ALP method has been the insufficient detection limit but with the method presented here this obstacle has been overcome, enabling measurement in fish specie

The Manager’s Dilemma: A conceptualization of online review manipulation strategies.

Online evaluations are one of the most important innovations in tourism in recent years, often combining a review/rating (business-specific evaluation) and a ranking (inter-business comparison). As online reputation determines economic success, tourism managers may be tempted to manipulate online content. This paper presents the results from a qualitative study involving 20 hotel managers in south

Is female sex associated with increased survival after out-of-hospital cardiac arrest?

Aim: To evaluate survival after out-of-hospital cardiac arrest in relation to sex. Methods: All patients with out-of-hospital cardiac arrest included in the Swedish Cardiac Arrest Registry between 1990 and 2000 in whom cardiopulmonary resuscitation (CPR) was attempted and who did not have a crew witnessed arrest were included. The registry covers 85% of the inhabitants of Sweden (approximately 8 m

New panel results on cointegration of international health expenditure and GDP

This article tests for existence of cointegration between health expenditure and GDP using data from 25 OECD countries for the period 1960-1997. The empirical modelling is based on a heterogeneous bivariate vector error correction panel model that allows for trending data as well as intercepts and trends in the cointegrating relations. Univariate country-by-country and panel unit root tests genera

Decomposition Reactions and Reversibility of the LiBH4-Ca(BH4)(2) Composite

LiBH4 is one of the promising candidates for hydrogen storage materials because of its high gravimetric and volumetric hydrogen capacity. However, its high dehydrogenation temperature and limited reversibility has been a hurdle for its use in real applications. In an effort to overcome this barrier and to adjust the thermal stability, we make a composite system LiBH4-Ca(BH4)(2). In order to fully

A simple correlation-corrected theory of systems described by screened Coulomb interactions

We present a simple correlation-corrected density functional treatment of dispersions containing macroions, where these are assumed to interact via screened Coulomb potentials, as given by Debye-Hückel theory. A straightforward mean-field description even fails to qualitatively capture important correlation effects displayed by such systems. However, if an effective, correlation-corrected potentia

Relaxed circadian rhythm in zooplankton along a latitudinal gradient

To test whether aquatic invertebrates are able to adjust their diel migratory cycle to different day length and presence of predators, we performed standardized enclosure experiments in shallow lakes at four different latitudes from southern Spain, with strong night-day cycles, to Finland where daylight is almost continuous during summer. We show here that nearly continuous daylight at high latitu

Multidose pharmacokinetics of factor IX: implications for dosing in prophylaxis

The aim of this study was to investigate the use of single-dose pharmacokinetic data for factor IX (FIX) to predict multidose pharmacokinetics and explore their use for pharmacokinetic dosing in prophylactic treatment of haemophilia B. Eight patients with severe haemophilia B were enrolled. Using single-dose pharmacokinetic data for each patient, plasma factor IX procoagulant activity (FIX:C) curv

Increased rates of psychosis among immigrants to Sweden: is migration a risk factor for psychosis?

Background. Previous studies have shown high rates of psychosis among Afro-Caribbean immigrants to the UK and immigrants to the Netherlands. Rates of schizophrenia-like psychoses (SLP), i.e. schizophrenia or other non-affective psychosis, among the native-born and immigrant populations were assessed in Malm, the city in Sweden with the highest proportion of immigrants.Methods. All adult patients a

A comparison of the rheological properties of wheat flour dough and its gluten prepared by ultracentrifugation

Ultracentrifugation has been used as a tool for separating dough into different phases and as dough can be described as a bicontinuous system, gluten forms one phase, and starch another. The aim of this study is to investigate the possibility of using ultracentrifugation to extract gluten from dough. By using this method disadvantages such as excess washing, drying and reconstitution of dried glut

Effects of nutrient level on maternal choice and siring success in Cucumis sativus (Cucurbitaceae)

Plants have evolved many mechanisms to increase the chance of gene dispersal mainly through pollen and environmental factors play an important role. Understanding the mechanism behind gene dispersal is therefore crucial in the correct evaluation of the use of genetically modified crops for cultivation. In this paper we address the question of weather nutrient availability for the female affects th

Early amniocentesis and congenital foot deformities

Objective: Several studies have shown an increased risk of congenital foot derformities after early amniocentesis. These studies have comprised amniocenteses performed before 13 completed gestational weeks. In this study, the risk of foot deformities after amniocentesis performed at 12-14 completed gestational weeks was determined. Methods: 3,469 genetic amniocenteses in singleton pregnancies perf

Evidence-based medicine in HBP surgery: Is there any?

Background. Evidence-based medicine (EBM) has become widely accepted as a basis for clinical decision in many fields of medicine. This review examines the specific role of EBM in hepato-biliary and pancreatic (HBP) surgery. EBM relies on four main sources, including clinical guidelines, meta-analyses, primary information and clinical experience. Randomized controlled trials (RCTs) constitute the c

The predictive value of prostate cancer biomarkers depends on age and time to diagnosis: Towards a biologically-based screening strategy

Both benign and malignant prostate diseases elevate total prostate-specific antigen (tPSA), and the incidence of benign disease increases markedly with age. There is evidence, however, that free-to-total PSA ratio (%fPSA) and human kallikrein 2 (hK2) more closely reflect the malignant process. We tested the hypothesis that tPSA levels are more strongly predictive of cancer in younger when compared