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High gas tightness ZrO2-added silicate glass sealant with low thermal stress for solid oxide fuel cells

A low leakage rate sealant of 10 wt% ZrO2-added CaO–K2O–Na2O–BaO silicate glass for SOFC has been studied. The structure of the sealant is stable at high temperatures with leakage rates less than 10−4 sccm∙cm−1, and no crystal except for ZrO2 is found in XRD analysis after heating at 800 °C for 100 h. ZrO2 is distributed in the glass matrix and plays a supporting role in avoiding over-softening at

Bumblebee flower constancy and pollen diversity over time

Bees often focus their foraging effort on a few or even a single flower species, even if other equally rewarding flower species are present. Although this phenomenon-called flower constancy-has been widely documented during single foraging trips, it is largely unknown if the behavior persists over longer time periods, especially under field conditions with large temporal variations of resources. W

Stabilization of evanescent wave propagation operators

This paper presents a stabilized scheme that solves the wave propagation problem in a general bianisotropic, stratified medium. The method utilizes the concept of propagators, i.e., the wave propagation operators that map the total tangential electric and magnetic fields from one plane in the slab to another. The scheme transforms the propagator approach into a scattering matrix form, where a spec

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Sagsbehandlerne i forvaltningen skal træffe afgørelser på et oplyst og objektivt grundlag og være i stand til at begrunde afgørelserne. De assisteres dog i stigende grad af beslutningsunderstøttende algoritmer, der er skabt til at generere output fremfor at tilvejebringe en forklaring. Denne udvikling kan effektivisere og for-bedre arbejdsgange, men kan også udfordre forvaltningsretlige krav til s

The Last Urban Frontier : Commodification of Public Space and the Right to the City in Insurgent Hong Kong

Denna avhandling undersöker skapandet och omvandlingen av offentliga platser i Hongkong, en stad som är genomsyrad av nyliberala ideal och som under senare år har kännetecknats av betydande försämringar när det gäller demokratiska rättigheter och friheter. Som ett resultat av den nyliberala kapitalismens expansion har kommodifieringen av det urbana rummet inte bara förvärrats utan också blivit merThis thesis explores the production and transformation of public spaces in Hong Kong, a city that is steeped in neoliberal ideals and has seen substantial deterioration in terms of democratic rights and freedoms in recent years. As a result of the expansion of neoliberal capitalism, commodification of urban space has not only exacerbated, but also become more far-reaching and indiscriminate. While

Sex och funktionshinder i Danmark och Sverige : Hur man hjälper och hur man stjälper

Ska allt vi förknippar med den offentliga sfären – tillgång till offentliga miljöer, arbetsliv, sociala relationer – vara tillgängligt för personer med funktionsnedsättning? Knappast någon skulle idag svara ”nej”. Men hur resonerar vi kring den privata sfären, kring frågor om intimitet och sexualitet? Är det möjligt att öka tillgängligheten också till dessa viktiga delar i en människas liv? Och ka

Crip theory : A useful tool for social analysis

The article gives an overview of Crip Theory, a diverse assembly of critical perspectives on dis/ability, and outlines how it can be used to analyse social relations and intersectionality in contemporary societies. Arguing that Crip Theory is indebted not only to cultural studies but also to materialist models of disability and feminist theory, the authors conclude that it can contribute significa

The influence of ignition control parameters on combustion stability and spark plug wear in a large bore gas engine

The paper presents novel studies on the impact of different ignition control parameters on combustion stability and spark plug wear. First, experimental results from a 32.4-liter biogas fueled large bore single cylinder spark ignition engine are discussed. Two different ignition systems were considered in the experiment: a DC inductive and an AC capacitive. The spark plugs used in the experiment w

Human Rights and Human Dignity

This contribution is an analysis of the philosophical construction of the dignity of the human, with a critical but hopefully constructive engagement with Dan Egonsson’s reflections on social attitudes about the dignity of humanity and how and why moral philosophers ought to account for then. I agree that philosophers should account for actual social attitudes, but my discussion will tend towards

Financial journeys : Reasoning about debt and money among young adults in Sweden

Unga vuxna nämns ofta som bland de mest ekonomiskt utsatta grupperna och Sverige karakteriseras ofta som ett av de länder i EU som har de mest skuldsatta hushållen. Även om hushållens skuldsättning främst är kopplad till bostadslån, har även andra former av kreditanvändning blivit allt vanligare. Mot bakgrund av en ökande tillgången till lättillgängliga konsumentkrediter, en tuff bostadsmarknad meYoung adults are often mentioned as among the most financially vulnerable groups, and Sweden is often characterized as being one of the countries in the EU with the most indebted households. While this houshold indebtedness mainly is linked to home loans, also other forms of credit usage have become increasingly common. Given the increasing access to readily availabe consumer credits, a difficult

The effects of Nordic berries on cognition and brain function : Connections with gut microbiota composition and cardiometabolic risk markers

An aging population is associated with an increased prevalence of cognitive decline and related diseases. Gradual cognitive decline is a natural feature of aging, but may also develop into a more severe loss of cognitive function, manifesting as mild cognitive impairment or severe cognitive disease. Currently, no medical treatments can fully prevent these conditions or diseases. One approach is to

Modeling Various Drought Time Scales via a Merged Artificial Neural Network with a Firefly Algorithm

Drought monitoring and prediction have important roles in various aspects of hydrological studies. In the current research, the standardized precipitation index (SPI) was monitored and predicted in Peru between 1990 and 2015. The current study proposed a hybrid model, called ANN-FA, for SPI prediction in various time scales (SPI3, SPI6, SPI18, and SPI24). A state-of-the-art firefly algorithm (FA)