Saker som ska röra sig har ofta stor fördel av att vara lätta, då detta minskar energin som krävs för att få dem att röra sig och eller ökar deras topphastighet. Detta har flitigt använts inom flygindustrin där strikta krav ställs på flygplan vad gäller nyttolast och bränsleförbrukning. En stor del i detta utvecklingsarbete har bestått i att ändra eller förbättra materialen som flygplan byggs i. DBy using composites when constructing vehicles, lighter weight and thus better performance can be achieved. Composites are widely used in airplanes and small boats, but has yet to be incorporated in larger ships such as freighters and cruise ships. The main hindrance for its use is the lack of practical knowledge and experience. However, the Visby corvette is a 70 m ship made entirely out of compo

Europa går över till en cirkulär ekonomi och har höga återvinningsmål. År 2030 ska alla förpackningar på marknaden vara återvinningsbara. Detta är en utmaning, särskilt för plastförpackningar för livsmedel, som vanligtvis består av olika plastmaterial. Kravet från återvinningsindustrin i Europa är att använda monomaterialförpackningar eftersom det är lättare att återvinna. Detta kan bli problematiEurope is transitioning to a circular economy and have high recycling goals. By 2030 all packaging on the market should be recyclable. This is a challenge, especially for plastic packaging for food, which usually constitutes of different plastic materials. The demand from the recycling industry in Europe is to use mono material packaging as it is easier to recycle. This can become problematic for

Språkförbistringar i vårdmötet påverkar distriktssköterskan, patienten och anhöriga i patientmötet. Studier om distriktssköterskors perspektiv på vårdmötet är begränsad, dessutom har tidigare forskning främst studerat fenomenet inom slutenvården. Syftet med studien var att belysa distriktssköterskans perspektiv av mötet mellan patient och distriktssköterska när de inte talar samma språk. Det utför

Southeast Asia is the hardest-hit region worldwide regarding the frequency and severity of natural hazards, which are deemed to increase significantly in the incoming years. The International Red Cross and Red Crescent Movement (RCRC) in Southeast Asia, through its International Federation of Red Cross and Red Crescent Societies (IFRC) Asia Pacific Regional Office (RO), IFRC Country Cluster Suppor

We want to have a good life! In fact, this is the core of urbanism and the reason why we keep building and constantly improving our cities. The ideal of how we wanted to live has changed through the time and developed into a form many people are satisfied with. But there is so much behind us living this ‘good life’. The urgency of climate crisis and the worsening situation for humans in afflict

Abstrakt Bakgrund: Övervikt hos barn är ett aktuellt ämne och i Sverige är 9% av alla 4-åringar överviktiga. Den miljö barnet växer upp i är av betydelse och för att lägga en bra grund för hälsosamma levnadsvanor är barnhälsovårdssjuksköterskan viktig. Barnhälsovårdssjuksköterskan arbetar hälsofrämjande och då barn identifieras med övervikt är hon ett stöd till familjen för implementering av goda

When investigating an accident, the HTO-perspective (Human, Technology, Organization) is helpful to show the whole picture. The method Safety Function Analysis allows the safety functions (barriers) to be identified and categorized according to the responsible actors, period of time and type of subjects. The purpose of the report is to evaluate the use of Safety Function Analysis for fire investi

Worldwide inequality in the circulation of vaccines during the outbreak of the COVID-19 pandemic re-ignited the ever-existing turmoil between rich, developed nations and poor, developing nations on the role of intellectual property (IP) against the fundamental right to health. The World Trade Organization (WTO) and the World Health Organization (WHO) contribute to making medicinal products and dia

How useful are algorithms when studying the genetics of non-model organisms? Metamonada is a group of eukaryotic single-celled organisms called protists that live in different environments using varied metabolic pathways. One unifying characteristic of the supergroup is their incredibly functionally reduced mitochondria. This group of organisms is worth studying because they are a mixture of free

The perpetrator inference in the crime scene can be narrowed down in geography using ancestry informative markers (AIMs) to infer ancestry. The commercial kits including AIMs are in high demand in criminal investigations to infer the ancestral geographic origin from the individual’s genotype. However, more than 10,000 SNPs were used to carry out accurate inferences, causing extremely high costs. A

This thesis presents a case study of a Swedish museum’s membership in a European network. Drawing on field material gathered through ethnographic methods, such as interviewing, participant observation and autoethnography, the thesis takes two theoretical perspectives: First, it conceptualizes the network membership as a form of cooperation, following Richard Sennett’s theory on the subject, and se

The measurement of biodiversity has been a challenging topic in recent years. Our group uses a remote sensing technique named Scheimflug lidar to monitor insect activity and abundance. A field campaign was conducted back in 2020 at Stensoffa, Sweden, with our lidar system to measure insect activities over a lake. This thesis work aims to develop a method to estimate insect diversity of the data re

Cambodia is now facing alarming issues concerning occupational safety and health in the construction sector. According to the ILO, in 2009, every day four people in Cambodia were killed due to occupational accidents which this amounted to more than 1500 death of the construction workers. Based on the union leaders in Cambodia, those accidents and illnesses were seen and occurred at the constructio

Abstrakt. Bakgrund: Ohälsosamma levnadsvanor utgör en stor risk för att utveckla folksjukdomar. Folksjukdomar utgör den ledande dödsorsaken i världen och är en av de största hälsoutmaningarna under 2000-talet. Studier har visat att motiverande samtal (motivational interviewing, MI) är effektivt för att hjälpa människor att bryta ohälsosamma levnadsvanor. Samtidigt belyser en studie att endast häl

Additiv tillverkning (AM) är vanligtvis relaterat till snabb prototypframställning, även om det nu för tiden blir ett verkligt alternativ för mindre serieproduktioner. Expansionen av denna teknik är direkt relaterad till produktionskostnaderna, men med rätt verktyg i designfasen är det möjligt att även hjälpa utvecklarna av en produkt att välja vilket som är det bästa materialet eller AM-tekniken Additive manufacturing (AM) is commonly related to rapid prototyping, although nowadays it is becoming a real option for small-batch production. The expansion of this technique is directly related with the production costs. However, with the supporting tool in the conceptual phase of design it is possible to guide the product developers at selecting the most appropriate material and AM technology

Hur landskapskvalitet påverkar humlors födosök efter pollen Under de senaste århundradena har det skett en nedgång i både antal arter och individer av humlor. Den förmodligen viktigaste anledningen till detta är den förändrade landskapsstrukturen som uppstått till följd av intensifieringen av jordbruket. Detta har lett till större och mer enformiga fält, samtidigt som naturliga (och halvnaturligaBumblebee abundance and diversity have been declining in the last few decades. Habitat change, mainly due to intensified agricultural practices, has been pointed out as the main driver in this process. Being central place foragers bumblebees are highly dependent on the landscape surrounding the nest and the resources available there. According to the optimal foraging theory bumblebee individuals i

After hatching, bird chicks are inevitably exposed to the thermal conditions of their environment. For the first stage of development chicks are not yet fully capable of maintaining a stable body temperature. During this time, their thermal environment can cause morphological and physiological priming. The plasticity of these responses and the extent to which they persist in the long-term is not w

Self-recognition is an advanced cognitive ability that is traditionally investigated by the mirror mark test. However, it has been argued that this test might not be a reliable measure of self-recognition ability, as it may be affected by the mirror understanding of the species. The great tit (Parus major) is one of the many avian species that did not succeed in this test. However, it has never be

Bumblebees are essential pollinators of wild and cultivated plants. They have experienced global declines over the last decades mainly due to habitat loss and fragmentation caused by agricultural intensification and land use changes. Haplodiploid hymenopterans with single-locus complementary sex determination (CSD), such as bees and bumblebees, are likely to experience partly different consequence

Allelopathy is a term first introduced by Hans Molisch in his 1937 book titled The Influence of One Plant on Another: Allelopathy and, as it stands, it is defined as the biological phenomenon through which growth, development, reproduction or survival of an organism are altered by the release of biochemicals from another. In this study, we investigate the allelochemical potential of leachates coll