Filtyp
The stability of dispersions containing charged particles may obviously be regulated by salt. In some systems, the effective charge, as measured by the potential some small distance away from the particles, can have a sign opposite to the bare surface charge. If charge reversal takes place, there is typically a salt concentration regime within which colloidal stability increases with added salt. T
Numerous broad insights have emerged in the last decades concerning the invasive non-indigenous round goby (Neogobius melanostomus) and its expanding presence in the Baltic Sea. The waters surrounding the Danish isles are the final frontiers separating the Baltic Sea from the North Sea, and although they offer highly favourable habitats, the biotic resistance in Öresund by native competitors might
Målsättningen att minska koldioxidutsläppen i världen har lett till en ökad efterfrågan på elbilar. Elbilar ses som en nyckelfaktor för EU:s omställning till en klimatneutral ekonomi. Det ökar efterfrågan på nödvändiga råvaror till elbilsbatterier som EU vill trygga tillgången på. För det ändamålet har kommissionen tagit fram en handlingsplan om batterier. Handlingsplanen om batterier identifierarThe goal of reducing carbon dioxide emissions in the world has led to increased demand for electric cars. Electric cars are seen as a key factor for the EU's transition to a climate-neutral economy. This increases the demand for the necessary raw materials for electric car batteries, which the EU wants to secure access to. To this end, the Commission has drawn up an action plan on batteries. T
Deep sea mining (DSM) is by its proponents heralded as a sustainable way to supply the renewable energy transition with the massive amount of minerals and metals it requires, while its critics fear it will be the final drop making the oceanic cup flow over into ecological disaster. While commercial DSM remains unprecedented and its consequences largely unknown, private companies are using its “gre
I ljuset av den forskning som har konstaterat att människor som har genomgått viktoperation mår betydligt fysiskt och psykiskt bättre efter viktoperation, saknas nyansering av hur de olika personerna har upplevt sina kroppar och sig själva lång tid efter viktoperationen. Denna kvalitativa studie syftade att undersöka viktopererades kroppsuppfattning och självkänsla mer än tio år efter viktoperatio
The aim of this study was to examine school counselors’ experiences of relationship building with students in online counseling during the covid-19 pandemic. The method chosen for this study was qualitative interviews with six school counselors from different municipalities. The empirical data was analyzed and discussed using past research, Carl Roger’s theory on client-centered therapy and Erving
Ögonrörelsemätning är en populär metod inom matematikforskning för att undersöka underliggande kognitiva processer. Individer med matematiksvårigheter har svårt att bemästra matematiska färdigheter och är ofta i behov av extra hjälp. Denna systematiska litteraturöversikt syftade till att granska elva studier (nio urval) publicerade mellan 2002 och 2020 för att ta reda på huruvida ögonrörelsemätninEye tracking is a popular method used in mathematics research for investigating underlying cognitive processes. Individuals with mathematical difficulties have problems with mastering mathematical skills and are often in need of extra help. This systematic review aimed to review eleven studies (nine samples) published between 2002 and 2020 to assess whether eye tracking is a useful method for rese
The freshwater pearl mussel Margaritifera margaritifera has dramatically declined through its entire distribution range since the 1900’s. Despite the increasing conservation measures implemented to protect the species, many populations are still endangered. The long-term objective of this research, realized in collaboration with Lund University and the Life Connects project, was to raise the succe
Den särskilda utskrivningsprövningen inom den rättspsykiatriska vården har varit omdiskuterad under en längre tid. Flera statliga utredningar har gjorts och en del uppmärksammade fall med lagöverträdare som suttit inom vården uppemot 20 år har skapat en het debatt. Denna uppsats ger en närmare inblick i systemet kring särskild utskrivningsprövning och vilka intressen som är centrala när bedömninga
Syftet med denna studie är att undersöka om marknadsrisken för de fyra svenska storbankerna har minskat i och med ökad kapitaltäckning. Finansiell teori implicerar att höjd kapitaltäckning bör resultera i minskad risk i aktiepriset. Marknadsrisken analyseras genom att undersöka historisk volatilitet, betavärde och Credit Default Swap spread (CDS-spread) för respektive banks marknadsnoterade aktie.The purpose of this study is to evaluate whether the market risk for the four largest banks in Sweden has decreased with increased capital requirements. Financial theory dictates that increased capital requirements decrease risk in the stock price. The market risk was investigated by analysing historical volatility, betas and credit default swap spread (CDS-Spread) for each bank’s publicly traded
Rapporter om rekordlåga grundvattennivåer och införda vattningsförbud blir vanligare och vanligare. En av de kommuner som har haft problem med dricksvattenförsörjningen är Gävle kommun. De har, via ett samarbetsorgan, anlitat Midvatten AB för att kartlägga förutsättningar för att inrätta en ny dricksvattentäkt i Älvkarleby-Skutskär. I det aktuella området löper Uppsalaåsen, som innehåller mycket gSweden has in recent years suffered record-low groundwater levels with imposed water restrictions. One of the municipalities who have had problems with their drinking-water supply is Gävle. They have hired Midvatten AB to review a possible location that for groundwater extraction in Älvkarleby-Skutskär. The Uppsala Esker, which contains a lot of groundwater, passes through the area. Parallel to th
Detection of Earth-mass planets on orbits around 1 AU with the radial velocity method has so far not been possible, the Doppler velocity they induce on their host star is too small to be detected. Planetary systems detected with the radial velocity method might then contain undetected Earth-like planets. One such planetary system is HD37605, which contains a star similar to the Sun and two gas gia
In this paper, the performance of a binary phase shift keyed random time-hopping impulse radio system with pulse-based polarity randomization is analyzed. The effects of interframe interference and multiple-access interference on the performance of a generic Rake receiver are investigated for asynchronous systems in frequency-selective environments. A key step is to model the asynchronous system a
We devise a stochastic and spatially explicit model for the dynamics of the initials cells in a stratified shoot apical meristem (SAM). The meristem is composed of three layers with seven initials per layer. We investigate the probability and number of divisions for a mutant lineage to either reach fixation or becoming purged through selection or drift. In contrast to previous studies our results
To investigate whether biotransport constitutes an entry route into pristine ecosystems for nonpersistent, nonvolatile xenobiotic compounds, extractable organically bound halogen in sockeye salmon (Oncorhynchus nerka) from Alaska was determined before and after spawning migration. The major organohalogen compounds in the salmon were halogenated fatty acids, predominantly chlorinated species that a
Sodium stearoyl-2 lactylate (SSL) lipid surfactant molecules specifically bind partially hydrolysed oat proteins in aqueous medium and significantly enhance the dispersion stability of oat cereal preparations. The proposed complexation is composition dependent and a greater understanding of the role of both oat proteins and lipid surfactant in the effect was gained with data from high performance
To investigate the morphological basis for olfactory reception in the carrot psyllid (Trioza apicalis) we used scanning and transmission electron microscopy. Our study reveals a very sparse sensillar setup. We identify and describe several different types of single-walled sensilla likely to have an olfactory function, as well as mechanosensory hairs and intracuticular sensilla. A T. apicalis anten
The microflora of the bile and wall of the gallbladder was prospectively investigated in 104 nonselected consecutive patients treated with early cholecystectomy for acute cholecystitis after an average hospital stay of 1.8 days. The chief purpose was to relate the findings of cultures to duration of the illness. Special attention was paid to anaerobic isolation techniques. The cultures yielded 107
Investigation of lung clearance of 99mTc-labelled diethylene triamine penta-acetic acid (DTPA) in smoking sarcoid patients has been impeded by difficulties to differ between pathology of clearance kinetics caused by sarcoidosis and by smoking. This study explores the kinetics of lung clearance of 99mTc-DTPA in 15 current smokers with intrathoracic sarcoidosis. The results are compared with finding
