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Cyclooxygenase-2 inhibition and thromboxane A (2) receptor antagonism attenuate hypoxic pulmonary vasoconstriction in a porcine model.

AIM: Hypoxic pulmonary vasoconstriction (HPV) causes pulmonary hypertension that may lead to right heart failure. We hypothesized that the COX-2 inhibitor nimesulide and the thromboxane A (2) receptor antagonist daltroban would attenuate HPV. METHODS: Haemodynamic measurements and blood sampling were performed in 18 anaesthetized, mechanically ventilated pigs, with mean ± SEM weights of 31.3 ±

Large Eddy Simulation of flame stabilisation dynamics and vortex control in a lifted H2/N2 jet flame

Flame stabilisation in (highly) preheated mixture is common in several industrial applications. When the reactants are injected separately in the device (usually at high-speed), the flame is lifted so that the fuel and oxidant first mix to give an ignitable mixture. If the temperature of the mixture is adequate, it auto-ignites stabilizing the flame. Here we focus on an academic lifted jet flame a

Gestational Age at Birth and Mortality in Young Adulthood EDITORIAL COMMENT

Preterm birth is associated with increased rates of neonatal and infant mortality. It has been hypothesized that gestational age at birth may also be associated with increased mortality rates in adulthood, but to date, no studies have demonstrated this relationship. This national cohort study investigated the association between gestational age at birth and mortality in young adulthood. Data obtai

Quantification of left-to-right shunt through patent ductus arteriosus by colour Doppler in children admitted for a device closure

Purpose: Our animal model suggests that quantification of ductal flow from colour Doppler pixels is possible. We aimed to clarify whether this method can be used to determine a clinically significant ductal shunt in children. Methods: We retrospectively quantified ductal flow from saved images from 20 children who had been admitted for device occlusion of patent ductus arteriosus. Colour Doppler i

Working conditions, health and productivity among dentists in Swedish public dental care - a prospective study during a 5-year period of rationalisation

In recent decades, comprehensive rationalisations have been implemented in public dentistry in Sweden. How rationalisations affect working conditions, health and production from a long-term perspective has been poorly investigated. This study aims to analyse changes and associations in dentists' working conditions, health and productivity during a 5-year period. In 2003 and 2008, 65 dentists respo

Study of heavy-flavor quarks produced in association with top-quark pairs at root s=7 TeV using the ATLAS detector

Using a sample of dilepton top-quark pair ((tt) over bar) candidate events, a study is performed of the production of top-quark pairs together with heavy-flavor (HF) quarks, the sum of (tt) over bar + b + X and (tt) over bar + c + X, collectively referred to as (tt) over bar + HF. The data set used corresponds to an integrated luminosity of 4.7 fb(-1) of proton-proton collisions at a center-of-mas

Policy reform and academic drift: Research mission and institutional legitimacy in the development of the Swedish higher education system 1977-2012

Twentieth-century massification of higher education and academic research led to mission diversification and structural diversification of national higher education systems (HESs), but also a tendency of non-university colleges to seek to develop into full-scale universities by the emulation of practices of established academic organizations, a tendency that has been called academic drift. The dri

Population collapses in introduced non-indigenous crayfish

Invasive species often have instable population dynamics and are known to collapse or oscillate heavily after passing through the initial lag/growth phases. Long-term data-series documenting these fluctuations are however rare. We use long-term (starting in the early 1960s), semi-quantitative data on the invasive signal crayfish (Pacifastacus leniusculus), capturing its population development afte

In Search of Heimat: A Note on Franz Kafka's Concept of Law

Are Fran T Kafka's representations of law and legality figments of his imagination, or do they go beyond his obsessive probing of his neurosis to reflect issues that also engaged the social and legal theorists of his time? Does Kafka's conception of law offer anything new in respect to law, justice, and bureaucracy that was not explored by his contemporaries or by later legal scholars? This paper

Appendicitis in children from a gender perspective.

The incidence in appendicitis and the appendectomy rate are different between boys and girls. This study aimed to further evaluate appendicitis in children from a gender perspective. Gender differences in presentation, perioperative care, and outcome after appendectomy were examined.

Familial Risk of Small Intestinal Carcinoid and Adenocarcinoma

BACKGROUND & AIMS: Small intestinal cancer (SIC) is rare, and its etiology is poorly understood. We compared clusters of families with SICs of different histologic subtypes. METHODS: By using the nationwide family cancer data sets of Sweden and Finland, we identified a cohort of 9964 first-degree relatives of 1799 patients with SIC, diagnosed from 1961 through 2009. Data were collected from ti

Natural Resource Management: Challenges and Policy Options

Much of the improvement in living standards in developed and developing countries is attributable to the exploitation of nonrenewable and renewable resources. The problem is to know when the exploitation occurs at rates and with technologies that are sustainable. If the technologies used are not sustainable, resource exploitation presents a serious problem for the future because welfare will decre

Usage of Open Source in Commercial Software Product Development - Findings from a Focus Group Meeting

Open source components can be used as one type of software component in development of commercial software. In development using this type of component, potential open source components must first be identified, then specific components must be selected, and after that selected components should maybe be adapted before they are included in the developed product. A company using open source compone

25-Hydroxyvitamin D and Cardiovascular Disease in Patients With Systemic Lupus Erythematosus: Data From a Large International Inception Cohort

Objective. An association between 25-hydroxyvitamin D (25[ OH] D; vitamin D) deficiency and increased cardiovascular (CV) risk factors and CV disease (CVD) has been shown in general population studies. Vitamin D deficiency has been noted in systemic lupus erythematosus (SLE), and CVD is a major cause of morbidity and mortality in SLE. The objectives of this study were to estimate the associations

On the Choice of Test for a Unit Root when the Errors are Conditionally Heteroskedastic

It is well known that in the context of the classical regression model with heteroskedastic errors, while ordinary least squares (OLS) is not efficient, the weighted least squares (WLS) and quasi-maximum likelihood (QML) estimators that utilize the information contained in the heteroskedasticity are. In the context of unit root testing with conditional heteroskedasticity, while intuition suggests

Autocrine Fibroblast Growth Factor 18 Mediates Dexamethasone-Induced Osteogenic Differentiation of Murine Mesenchymal Stem Cells

The potential of mesenchymal stem cells (MSC) to differentiate into functional bone forming cells provides an important tool for bone regeneration. The identification of factors capable of promoting osteoblast differentiation in MSCs is therefore critical to enhance the osteogenic potential of MSCs. Using microarray analysis combined with biochemical and molecular approach, we found that FGF18, a