Framtidens energilagring banar väg åt förnyelsebar elenergi Andelen förnyelsebar elenergi på marknaden ökar ständigt. En negativ aspekt med dessa källor är att vi inte kan kontrollera när energin skall vara tillgänglig – vindkraften behöver vind och solkraften behöver strålande sol. För att överkomma dessa motsättningar och göra energin mer tillförlitlig behöver vind och solenergi kompletteras meIn this study, different membranes were tested for their use in a vanadium redox flow battery (VRB). The membranes were first tested under charge-discharge operation of the VRB over four charge-discharge cycles at different current densities (20 mAcm-2, 40 mA cm-2 and 60 mAcm-2) and the corresponding cell performance was evaluated in terms of total energy efficiency (EE), coulombic efficiency (CE)

Agricultural systems, specifically in the global South, and the people living of them, are more than others, exposed to changes in the environment around them. Smallholder farmers (that work in agroecological systems), with a low standard of living, are the most vulnerable to short-term shocks and long-term stresses. There have been attempts by development agencies, researchers and local governmen

Insulating glass unit (IGU) is separated double or triple glass panes with closed cavities in between, usually filled with argon to reduce the heat transfer. When a construction like this is exposed to temperature variations the volume of the gas will change and pressure changes will occur. The glass panes will bulge which will give displacements and stresses in the glass panes. For large dimensio

In nuclear piping engineering, the response spectrum method of analysis is widely used to analyze piping systems. The matter of combining modal responses is of great interest. Complications may occur with the response spectrum method for large systems. Examples are convergence issues and something called twin-mode effects that may overestimate the effects on the system. This master thesis investi

The actual concept of food security focuses on four food security dimensions: food availability, food access, food utilization and food stability of which eight indicators were identified for this study. The study aims to evaluate vulnerability to chronic food and nutrition insecurity, one of the food stability types, in Ethiopia; and examines the relationship between four food security dimensions

"Transportation" is believed to be one of the main essential elements for the development of human civilization. From road to rail and from sea to sky. Till now, we human have formed many varied modes of transport that we facilitate in our daily lives. It is inevitable that a place that gathered the more people, the greater consumption of transportation. Many demanding cities like Londo

Hur ser vår inre NuRD ut? NuRD är ett molekylkomplex som arbetar med att slå på och av gener i vårt DNA. Man har upptäckt att NuRD ibland stänger av gener som normalt verkar för att hämma cancer. Om man kunde ta reda på den exakta strukturen av NuRD så skulle man kunna designa läkemedel som hindrar NuRD från att stänga av våra naturliga cancerhämmare. Vår arvsmassa är samlad som en kod i en värThe Nucleosome Remodeling and Deacetylase (NuRD) complex is a transcriptional regulator essential to several normal developmental processes, but also found to have a role in several types of cancer. In order to design cancer therapies targeting this complex, determining the structure and subunit composition is crucial. X-ray crystallography is required for the level of detail desired, demanding la

In current experiments at the high-power laser facility at the Lund Laser Centre, electrons accelerated to hundreds of MeV over short distances by means of laser wakefield acceleration in produced plasmas. To determine the amount of secondary radiation generated when accelerated electrons interact with surrounding materials is of interest to ensure a safe working environment. In this thesis, the

Bimodal harmonic structured (HS) materials, is a new class of multi-scale architected metallic materials having specified topological arrangement of coarse- and ultra-fine grains. HS are experimentally proven to combine both high strength and ductility associated with ultra-fine- and coarse-grained fractions respectively. In this work, finite-element models of HS structured specimens were construc

Protected areas (PAs) embody a historical legacy of value contestation and human exclusion. While the rise of community-based conservation in the 1980s sought to reconfigure this mechanism by running a counter narrative arguing that biodiversity conservation and development were mutually reinforcing objectives, exclusionary PAs continue to maintain a strong position in the conservation discourse.

The Amazon has always been a strategic region because of its rich variety in natural resources. Its global interest is spreading across levels and scales, influenced by the increasing demand for fossil fuels and biodiesel and the threat of climate change. Neoliberal practices continue privatizing and exploiting the Amazon´s resources regardless the Indigenous communities’ interests. These communit

This report discusses two research questions concerning ocular dominance columns, a cortical structure present in the primary visual cortex which predominately respond to either left or right eye stimuli. The first research question addresses the problem of retinotopy and ocular dominance columns. Retinotopy is the mapping of visual stimuli in the retina to a location in the visual cortex. Current

Vid värmeåtervinning från gråvatten nyttjas spillvärme som annars skulle gått förlorad från stadens infrastruktur. Gråvatten är avloppsvatten från bad, disk och tvätt. Utav hushållsavloppsvattnets totala kemiska och termiska energi finns 80 % lagrad i gråvattnet i form av värme. Genom att källsortera avloppsvatten kan värmeenergin i gråvattnet utnyttjas samtidigt som andra åtgärder med ekologiska

This is the story if a beginning, a beginning of a journey to the unknown, to find my own path, because paths are made by walking...but you have to do the scariest part: start to walk. The project is presented as a handbook for the next generations of students that want to start their own office, answering the same questions and difficulties that I had during my trip. The idea of this Master pro

Previous studies have entertained the prospect of having 3D models substitute for their dry bone originals in osteological analysis. The objective of this study was to contribute to qualifying to what extent this may be possible given current technology. To this purpose, rather than choosing just a quantitative and purely technical method for evaluating models, as has been the norm in previous stu

The blogosphere recently experiences an increasing attention by PR practice which engages in blogger relations to target bloggers as influential online gate-keepers. Bloggers thereby are given numerous possibilities to make use of their authenticity and credibility, and endorse brands through collaborations with PR. This study explores the established discipline of blogger relations in German PR a

The aim for this thesis is to find out what aspects are important to create a good sound environment at home. In order to do this three different sound environments has been studied in the literature review: hospitals, schools/pre-schools and offices. Important acoustical parameters was picked out and a method for evaluating the sound environment at home was carried out. The main subject was to fi

Soils provide the foundation for human well-being but are increasingly degrading from land use change or types of intensive land use like agriculture. In Europe, soil natural capital is degrading over time and space because of compaction, erosion, and the loss of organic matter. This trend diminishes the soil’s ability to sustain a flow of ecosystem services, which are valuable to human well-being

Arbetet undersöker utvalda råvarufutres möjlighet att genom en cross-hedge prissäkra Dried Distillers Grain with Solubles (DDGS) som är en biprodukt från etanoltillverkning. Processen för att finna den bästa cross-hedgen sker genom OLS, ECM, VECM och MIDAS regressioner med både in sample estimeringar och out of sample prognostiseringar. Regressionerna använder börshandlade råvarufutures och säljpr