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Most animals, including aquatic crustacean zooplankton, perform strong avoidance movements when exposed to a threat, such as ultraviolet radiation (UVR). We here show that the genera Daphnia and Bosmina instantly adjust their vertical position in the water in accordance with the present UVR threat, i.e., seek refuge in deeper waters, whereas other taxa show less response to the threat. Moreover, D
I denna rapport redovisas populationstrender för 224 svenska fågelarter för olika långa tidsperioder, samt korttidstrender för 13 arter av större däggdjur. Fåglarna har räknats höst, vinter, vår och sommar enligt strikt standardiserade metoder. Sommar- respektive vinterpunktrutter har räknats sedan 1975, i huvudsak i södra Sverige. Standardrutterna räknas också på sommaren (sedan 1996) men täcker We present the results of the Swedish Bird Survey, a project run by the Department of Biology, Lund University, as a part of the National Monitoring Programme of the Swedish Environmental Protection Agency. The results for 2023 include data from: 517 winter point counts in 2022/2023 (48th winter), of which 243 were carried out during the Christmas/New Year count, 181 summer point count routes (49t
Lipid membranes are highly mobile systems with hierarchical, time and length scale dependent, collective motions including thickness fluctuations, undulations, and topological membrane changes, which play an important role in membrane interactions. In this work we have characterised the effect of encapsulating two industrially important enzymes, β-galactosidase and aspartic protease, in lipid spon
Deep convolutional neural networks (CNNs) have been shown to predict poverty and development indicators from satellite images with surprising accuracy. This paper presents a first attempt at analyzing the CNNs responses in detail and explaining the basis for the predictions. The CNN model, while trained on relatively low resolution day- and night-time satellite images, is able to outperform human
Enzymes have come into use for many new applications outside their natural biological environment, taking advantage of their high efficiency and selectivity as biocatalysts. Such new application often requires encapsulation to preserve the structure and activity of the enzyme, but also to regulate and control the activity. Here, we will discuss two types of encapsulation, soft matrices consisting
Background: Oral administration of health-promoting bacteria is increasingly used in clinical practise. These bacteria have anti-inflammatory characteristics and modulate the immune system without major reported side effects. The mechanisms of action are not yet fully defined. Our aim was to study systemic effects of probiotics by measurements of leukocytes as well as local effects on rectal mucos
The bioactivity, biological fate and cytotoxicity of nanomaterials when they come into contact with living organisms are determined by their interaction with biomacromolecules and biological barriers. In this context, the role of symmetry/shape anisotropy of both the nanomaterials and biological interfaces in their mutual interaction, is a relatively unaddressed issue. Here, we study the interacti
Polycystic ovaries (PCO) contain antral follicles that arrest growing around 3–11 mm in diameter, perturbing the dominant follicle’s selection and the subsequent ovulatory process. Proteomic alterations of PCO follicular fluid (FF) (i.e., microenvironment in which the oocyte develops until ovulation) have been studied from large follicles in connection with oocyte pickup during ovarian stimulation
Stimuli-responsive self-assembly of (an) isotropic colloids has resulted in a plethora of self-assembled structures with potential applications in fabricating smart materials. A lack of detailed understanding of the interplay between these self-assembled structures and the resulting dynamics has often impeded the exploitation of their full potential. Herein, we have unveiled the relationship betwe
I denna uppsats har en ekonometrisk analys utförts för att undersöka räntans effekt på konsumtionen i Sverige mellan åren 1995-2016. En del av fokusen har legat på de låga räntenivåerna sedan 2009 och den rådande negativa reporäntan. I modellen har även ytterligare makroekonomiska variabler inkluderats för att undersöka vad som har en märkbar effekt på konsumtionen. Enligt resultat har variablerna
Public authorities and units are allowed to consider social concerns during public procurements, but have limited room for maneuver. The legal developments during the last 15 years have gone towards more and more freedom for the procurer who wishes to consider social concerns. This makes certain questions regarding pros and cons relevant. The purpose of this paper is to explore these and reason ab
Syftet med uppsatsen är att studera och analysera hur en räntehöjning respektive -sänkning påverkar aktiekursen samt om det föreligger någon skillnad mellan olika branscher och soliditetsnivåer. Vi har genomfört en kvantitativ studie, en händelsestudie, av totalt 60 svenska företag fördelade på sex olika branscher, alla noterade på Stockholmsbörsen. Vi har beräknat den onormala avkastningen för al
Har kvinnliga ledamöter i Sveriges riksdag någon påverkan på att den politik som förs blir mer fördelaktig för kvinnor i samhället? För att svara på den frågan har vi valt att applicera två teorier, teorin om kritiska massa och representationsteorin, på ändringarna i abortlagstiftningen och resulterande motioner från riksdagens ledamöter. Av de förändringar som skett har tre år varit viktiga för o
This report investigates how organizations deal with organizational learning during times of crisis. The aim was to contribute with a framework visualizing the most profound drivers and barriers to organizational learning during crisis management, using the covid-pandemic as a case example. A preliminary framework was developed with the literature review as a foundation to do this. An interview gu
Denna uppsats ämnar till att bilda en förståelse för hur Rysslands fullskaliga invasion av Ukraina har påverkat EU:s säkerhetspolitik, med fokus på dels hur EU själva definierar det förändrade säkerhetspolitiska läget och hur de utifrån det förändrade läget har valt att agera. Den metodologiska utgångspunkten för att besvara detta sker genom en kvalitativ innehållsanalys av dokument från EU såsom
Sommaren 2018 var ett rekordvarmt år, och en markant ökning på solkurvor konstaterades av Trafikverket. Det finns flera orsaker till varför en solkurva uppstår, förutom den ökade temperaturen. När en solkurva bildas dras slutsatsen i många fall att anledningen endast är hög temperatur och vidare undersökningar utesluts direkt. Detta examensarbete består till stor del av en litteraturstudie som bThe summer of 2018 was a hot year, a significant increase of sun curves was observed by Trafikverket. There are several reasons why a sun curve occurs, in addition to the high temperature. When a sun curve is formed, the conclusion is drawn in many cases that the reason was heat and no further investigations are made. The project consists a literature study that explains the physical theory, fac
