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An exploratory modelling study of chemiluminescence in ammonia-fuelled flames. Part 2

The detailed kinetic mechanism of the author was extended by reactions describing formation and consumption of excited species which are formed in NH3+CH4+air flames, complementing the modelling efforts presented in Part 1. Currently the model includes the following excited species: O(1D), OH*, O2*, CH*, CH2(1), NO2*, NO(A), NH*, N2(A), NH2*, C2*, CO2*, CH2O*, and CN*, among which many were observ

The Role of Scientific Language Use and Achievement Level in Student Sensemaking

Many science students struggle with using scientific language and making sense of scientific phenomena. Thus, there is an increased interest in science education research and public policy with regard to understanding and promoting scientific language use and sensemaking in science classrooms. However, there is a lack of comparative studies on how upper-secondary school students of different achie

Accuracy of uncalibrated 2D digital subtraction angiography measurements on a novel biplane system compared to computed tomography angiography

Background: 2D digital subtraction angiography (DSA) images are the gold standard for neuroradiological vascular assessment and the basis of interventional procedures such as mechanical thrombectomy and cerebral aneurysm coiling. However, length measurements in projected DSA images are affected by the distance between the x-ray source, the object, and the detector. Precise coordination between all

Arts and culture engagement and mortality : A population-based prospective cohort study

Aims: The aim of this study was to investigate associations between having visited the theatre/cinema and an arts exhibition during the past year and all-cause, cardiovascular disease (CVD), cancer and other-cause mortality. Methods: The 2008 public health postal survey in Scania, Sweden, was distributed to a stratified random sample of the adult population (18–80 years old). The participation rat

Randomized clinical Trial Comparing drug Eluting Stent Zilver PTX® Versus Bare Metal Stent Zilver Flex® for Treatment of Lesions in Femoral and Popliteal Arteries in Chronic Limb Threatening Ischemia

Objective: Drug eluting stents (DES) might improve the results of stenting in the femoropopliteal (FP) segment, but randomized data between DES and BMS in the treatment of patients with chronic limb threatening ischemia (CLTI) is lacking. The aim of this study was to perform a randomized comparison, between DES and bare metal stent (BMS) implantation in a subgroup of CLTI patients with lesions in

Parallel matters : Efficient polyp segmentation with parallel structured feature augmentation modules

The large variations of polyp sizes and shapes and the close resemblances of polyps to their surroundings call for features with long-range information in rich scales and strong discrimination. This article proposes two parallel structured modules for building those features. One is the Transformer Inception module (TI) which applies Transformers with different reception fields in parallel to inpu

Between Law and Safety : Licensed Aircraft Maintenance Engineers and the Socio-professional Construction of Legality in European Civil Aviation

Den undersökning och intervjubaserade mixed metods-forskningen som presenteras i denna sammanläggningsavhandling utforskar hur flygtekniker i Sverige, Norge och Portugal upplever att arbeta under den vertikala kedjan av hård och mjuk lagstiftning som utgör Europeiska Unionens reglering av denna sektor. Genom att fokusera på händelserapportering och certifiering av att flygplan kan tas i drift, somThe survey and interview-based mixed methods research presented in this compilation dissertation explores how licensed aircraft maintenance engineers in Sweden, Norway and Portugal experience working under the vertical chain of hard and soft law that makes up the European Union regulation of this sector. By focusing on occurrence reporting and the certification and release of aircraft into service

Investigating the Electromechanical Behavior of Unconventionally Ferroelectric Hf0.5Zr0.5O2-Based Capacitors Through Operando Nanobeam X-Ray Diffraction

Understanding various aspects of ferroelectricity in hafnia-based nanomaterials is of vital importance for the development of future nonvolatile memory and logic devices. Here, the unconventional and weak electromechanical response of epitaxial La0.67Sr0.33MnO3/Hf0.5Zr0.5O2/La0.67Sr0.33MnO3 ferroelectric capacitors is investigated, via the sensitivity offered by nanobeam X-ray diffraction experime

A geofencing-based methodology for speed limit regulation and user safety in e-scooter sharing systems

The advent and popularity of shared electric scooters in many urban areas worldwide offer new opportunities and challenges to be addressed by the research community, especially as far as safety and accessibility issues are concerned. This paper proposes a methodology, based on geofencing technology (i.e., virtual geographic boundaries) to define in which urban areas the speed of shared electric sc

Quantifying extinction imaging of fuel sprays considering scattering errors

In this work, we use the measurement technique of high-speed Diffuse Back Illumination Extinction Imaging (DBI-EI) to obtain quantitative information in the form of projected liquid volume (PLV) in a highly transient GDI process. For the DBI-EI setup we use a LED-Panel as the light source, which fulfills diffuse back illumination extinction imaging criteria. Measurements were carried out in a cons

Plasma phosphorylated tau 217 in preclinical Alzheimer's disease

An accurate blood test for Alzheimer's disease that is sensitive to preclinical proteinopathy and cognitive decline has clear implications for early detection and secondary prevention. We assessed the performance of plasma phosphorylated tau 217 (pTau217) against brain PET markers of amyloid [[11C]-labelled Pittsburgh compound B (PiB)] and tau ([18F]MK-6240) and its utility for predicting longitud

What is the point of method sections?

There are plenty of books and articles on research methods, but few discuss the nature and purpose of method sections in academic journals. Based on interviews with critical and interpretivist researchers, this short paper examines the nature and purpose of method sections in management and organization studies. We show how researchers make sense of, and struggle with, positivist expectations abou

Leadership and the stings of command

In business discourse, the leader is often portrayed as the one who changes the current order. Leaders stand above the organization, and from that elevated position they can bring about the necessary change that offers a way out of whatever crisis afflicts the business. In this paper, I consider the paradoxical fact that leaders, in our popular understanding at least, do not use orders when creati