When coupled to different applications, a polymer electrolyte fuel cell (PEFC) work at a different operating temperature. In this study, the internal resistance of a PEFC is evaluated by using Electrochemical Impedance Spectroscopy (EIS) at moderate low current density, i.e., 0.5 A/cm2, in the range of 40 – 80°C. The evaluation is carried out considering frequencies between 10kHz and 0.1Hz. An equ

Mycket forskarmöda har ägnats åt den stora reduktionen i början av 1680-talet, då den svenska adelns förläningar drogs in till kronan och maktbalansen skiftade till den enväldige kungens fördel. Denna forskning har framför allt behandlat den politiska och ekonomiska utvecklingen, ofta ur ett elitperspektiv. Andra gruppers agerande och levda verklighet har sällan blivit belysta, vilket inte minst gA large body of scholarly work has been dedicated to the Swedish reduction in the early 1680s when fiefs granted to the nobility were revoked as the crown strengthened its position. However, this research has focused on political and economic developments from an elite perspective. Insufficient attention has been paid to the actions and lived realities of other groups, not least the servants of th

Artikeln behandlar hur bomärken brukades av bönder i byn Väby i Bräkne-Hoby socken i Blekinge från 1600-talets slut till 1800-talets första hälft. Dessutom analyseras utvecklingen då bomärkena som underskrifter successivt ersattes med initialer. Först tecknas en översiktlig bild av bomärkenas långa historia och deras roll i den svenska allmogekulturen. Därefter presenteras byn Väby och de förhålla

This study explores the everyday driving forces behind social advancement in the Swedish Baltic Sea region between 1680 and 1770. Characterized by the collapse of the Swedish Empire and increasing bureaucratization, this period presented obstacles to people seeking to improve their status within the prevailing hierarchical order. However, the supplication system consistently channelled social aspi

This paper discusses the role of mathematics in physics teaching and learning. The intention and strength of science is to describe what happens in the realworld by organizing explanations through theories and theoretical models. It has been widely suggested that learning in science is influenced by views about the nature of scientific knowledge. Furthermore, mathematics is an inherent part of the

University students’ conceptions of differentiability, continuity and relationsbetween these concepts were studied to reveal their choices of representationsand their strategies to justify their relational claims. Questionnaires and interviews were used to collect data. The results were analysed and categorizedthrough a framework based on understanding as connections between concepts,and a theory

Autistic persons often have difficulties with social interaction and communication. Sensory impressions are often processed differently than in neurotypicals. The person may be negatively affected bodily, e.g., being unstable or having reduced body awareness. The body awareness may be observed as an expression in movement quality. However, there is a lack of knowledge about experiences, assessment

Syftet med denna publikation är dels att på ett mer utförligt sätt presentera den information som framkom angående undersökningarna vid Ale stenar i samband med Märta Strömbergs bortgång, dels att sätta denna i relation till Strömbergs arbete med Kåsebergaåsen samt Bengt Söderbergs fortsatta arbete med platsen.Ytterligare ett syfte är att lyfta det fyndmaterial som påträffades i och runtom skeppss