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Alzheimers sjukdom och nanopartiklar – blir vi dementa snabbare? Demenssjukdomar kommer märkbart att påverka vår allt mer åldrande befolkning. Alzheimers sjukdom är den vanligaste av dessa och leder till exempel till minnesförlust och förändrad personlighet. En sak som kännetecknar sjukdomen är bildandet av plack i hjärnan. Plack består av ihopklumpade protein. Proteinet som utgör dessa utgör desAbstract Alzheimer’s disease is a common form of dementia with one of its hallmarks being the formation of plaques in the brain consisting of fibrils formed from the amyloid beta peptide (Aβ). Nanoparticles have in vitro been shown to affect the rate of which these fibrils form. When nanoparticles enter a biological system they will be covered with proteins, a protein corona is formed. In this st

PEJL PÅ RASTANDE FLYTTFÅGLAR Varje vår och höst passeras Falsterbo av miljontals flyttfåglar. Många mellanlandar här för att fylla på sina bränsledepåer och vila upp sig inför nästa etapp på resan. Frågor som är intressanta inom flyttfågelforskningen är bland annat hur länge fåglarna rastar och om längden på vistelsen är kopplad till art, ålder, kön, fettreserver eller flyttningsstrategi (i det hABSTRACT The aim of this study was to examine autumnal stopover strategies of migratory passerines, with the main focus on stopover duration, departure time and departure direction in relation to biometrics (age, sex and fat reserves), different migratory strategies (long, short-to-medium and partial migration) and weather conditions. During the autumn migration season of 2010, in conjunction wi

Bcl-6 i T celler – ökar men initierar ej uttryck av CXCR5 En av de viktigaste funktionerna av kroppens immunförsvar är dess förmåga att producera antikroppar som skyddar mot infektioner. När immunförsvaret utsätts för en ny bakterie eller ett nytt virus kommer B celler att producera stora mängder antikroppar för att förhindra en storskalig infektion. Dessa antikroppar är dock inte särskilt effekAbstract: T follicular helper (Tfh) cells are a subset of CD4 T cells specialized to help B cells during the germinal center reaction. By expressing high levels of the chemokine receptor CXCR5, Tfh cells home into the B cell follicle where they provide B cells with cytokines IL-4 and IL-21 as well as receptor-ligands interactions essential for B cell differentiation into mature antibody secreting

Education is seen as one of the key solutions to various social problems in the field of development studies. Primary education particularly lays the basis of forming knowledge and ability to access higher levels of other social activities. As the second of Millennium Development Goals,universalizing primary education is attracting significant attention among the international world. One of the ma

Modified Atmosphere Packaging (MAP) is a technique for modifying internal gas atmosphere of the food package to slow deteriorative reactions inside the package and prolong shelf life of the product. However, due to current limitations of this passive technology, there might be some opportunities for introduction of active MAP through microorganisms. Therefore, the study is conducted on investigati

The possibility to print out metallic components with complex 3D-structures is could revolutionize the industry. In this master’s thesis the cause of process parameters have been investigated for three alloys; stainless steel, 316L, two nickel-based alloys, a derivative of Alloy 738 and 939. Microstructure, porosity, tensile testing, impact toughness, hardness and surface roughness was investigate

This paper presents an exploratory case study of the factors that explain the emergence and growth of social finance in the UK. Social finance refers to an array of activities that address societal issues using finance tools and logic. The practice of social finance manifests itself in the investment in social organisations and enterprises. Investments in social finance, ultimately aim to generate

This master thesis is on Statistical Process Control (SPC). The objective is to evaluate if SPC can be used in a process that produces plates for heat exchanger, the process evaluated is located at Alfa Laval Lund AB. The products are produced in the process by punching and shearing metal coils. An ambition in the project is also to increase the knowledge about Statistical Process Control at Alfa

Cardiovascular diseases are accountable for almost 50 % of the mortality number in Europe which is why research on its causes is highly prioritised. For practical and ethical reasons, in vitro study models are of high importance to enable research on cardiac abnormal behaviours. To meet this issue, researchers from Imec, Belgium, developed Neuray-II, the second generation of a biocompatible chip w

This report is the result of a masters project conducted at the Division of Structural Mechanics at Lund University. The purpose of the project was to integrate a FEM mesh generator with the Python version of the code library CALFEM and improve the mesh visualisation capabilities of said library. This report describes how the mesher software Gmsh and the visualisation library visvis were integrate

The migration of people by sea is not a new phenomenon. Since early days, people whose lives have been under threat or people in search of better living conditions often have taken this route. However, today States are trying to prevent every attempt of irregular migration as they have established policies of interception at sea. They often engage in interceptions without taking into consideration

China’s economic reform has opened fresh flood into global market and its recent performance in overseas investment attracts world attention. Through a comparison in motivation, location choice and market entry mode with other Asian economies, as well as theoretical explanations from institutional perspective, this study intends to discover their similarities and differences, thus how unique China

This paper attempts to describe how young entrepreneurs in high-tech startups frame strategic decisions. Furthermore it seeks to identify how different types of decisions/situations affect the application of different types of logics. Lastly it aims to explore how and why these frames change over time if they do. The insights should indicate how decision-making in practice relates to existing theo

After the 1980s, neoliberalism became the dominant philosophy of development across the world. Whereas the widespread implementation of neoliberal economic policies contributed immensely for a maximization of world economic integration and activity, critics argue that the ideology was also responsible for dramatically widening the inequality gap between and within nations, as well as for the incre

There are many valuable substances present in nature such as antioxidants. The conventional method for extracting the antioxidants employs organic solvents. Subcritical Water Extraction (SWE) is a sustainable method for extraction of high valuable compounds. This method uses subcritical water as a solvent instead of organic solvents but leaves the compounds in a water solution. Keeping the antioxi

Helsingborg, a coastal city in southern Sweden, has initiated a twenty-five yearlong re-development project called H+, aiming to convert the southern industrial harbor space into a new, livable urban neighborhood and city center. The winning plan for the H+ project, titled ‘The Tolerant City,’ is an inherently social redevelopment that requires innovative and collaborative strategies, as well as a

The continuous increase in global energy consumption has led to a greater focus on the energy required for heating buildings. This thesis presents a techno-economic model for analysing low-temperature district heating networks coupled with a geothermal heat source. The model was used to analyse an existing system in Denmark with 15 connected single-family detached houses. Each of the houses has a

Dry etching is one of the most important methods of pattern transfer in nanofabrication. There are many dry etching methods, the most commonly used is reactive ion etching (RIE), that is based on a continuous supply of reactive ions and radicals generated in a radio-frequency (RF) plasma discharge. The RIE approach can be very accurate and may provide high resolution etching, below 10 nm in latera

This paper presents a comprehensive cross-functional analysis of machining operations for ductile cast iron components in the automotive industry, focusing on the problem of chip carryover and its impact on downstream processes. The research aims to understand the role of machining and identify the source of the issue, by analyzing different machining sequences and the chips that affect the final