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In arid and semi-arid areas, hydrosphere and biosphere suffer maximal disturbance and impacts of mankind during the development and utilizing processes. These impacts interact with each other and exert hostile effect on the environment. The transformation of the ecological environment depends mainly on the exploitation of water resource, economic development and the relative balance of environment
Phase diagrams of poly(ethylene glycol)/polyacrylate/Na(2)SO(4) systems have been investigated with respect to polymer size and pH. Plasmid DNA from Escherichia coli can depending on pH and polymer molecular weight be directed to a poly(ethylene glycol) or to a polyacrylate-rich phase in an aqueous two-phase system formed by these polymers. Bovine serum albumin (BSA) and E. coli homogenate protein
In this study we investigate the effect of programmed cross-flows on the error in the hydrodynamic radii (r(h)) determination with asymmetrical flow field-flow fractionation (AsFlFFF). Three different standard polystyrene particles (nominal radii of 30 and 40 and 50nm) are fractionated with exponentially and linearly decaying cross-flows with different decay rates. Hydrodynamic radii are calculate
This study investigated the effect of glow discharge treatment of titania surfaces on plasma protein adsorption, by means of ellipsometry and mechanically assisted SDS elution. The adsorption and film elution of three plasma proteins, viz. human serum albumin (HSA), human immunoglobulin G (IgG) and laminin-1, as well as competitive adsorption from a mixture of the three proteins, showed that the a
The purpose of my thesis is to understand in what ways economic and productive transnationalisation affects political and social participation in the local level. Particularly, what I wish to explore are the effects of integration into the global economy over labour movements in peripheral regions. I study the ways in which workers of salmon firms in the areas of Puerto Montt and Chiloé organise a
Vindkraft är en förnyelsebar energikälla som ligger i tiden och är den energikälla som idag växer snabbast i världen. Eftersom Sverige har stor utbredning och långa kustpartier finns det goda möjligheter att utnyttja vind som energikälla. Sveriges riksdag har därför satt ett mål att ungefär tiodubbla energiutvinningen från vindkraft till år 2015. Den generella uppfattningen om vindkraft i Sverige
The main sustainability goal of many small islands in the North Sea is to become self supplied in renewable energy in 20-30 years. The majority of the islands are trying to repeat Samsø‘s success – to make a transition towards energy sustainable system by new energy production from local renewable sources such as wind, solar and biomass. However, for other islands like Spiekeroog island, a tourist
Jag har studerat en klass i nian som haft som skoluppgift att skriva var sin egen låt. Förutom att observera hela klassen har jag dessutom följt fyra elever under deras musikskapande process. För att besvara min forskningsfråga om hur ungdomar gör när de skapar musik som skoluppgift, har jag använt mig av kvalitativ metod och jobbat med observationer och intervjuer. I teorin har jag valt att titta
When a change of a signal installation will be implemented, the process takes the approach of two guiding documents that Trafikverket provides; BVF 544.94001 Teknisk säkerhetsstyrning and BVS 544.92100 Ibruktagandebesiktning av signalanläggningar. The problem with the two documents is that they sometimes treat the same things in the commissioning process, which means that there is a risk of contra
In this thesis we study analytical and numerical methods which describe interactions and evolution of complex physical systems modeled by microscopic processes. We focus on two types of systems which are differentiated based on how modeling is taking place at the microscopic level. In that respect we study systems which can be described either by stochastic differential equations or by elementary
The nearest neighbour level spacing distribution and the Δ3 statistic of level fluctuations associated with very high spin states (I ≳ 30) in rare-earth deformed nuclei are analysed by means of a cranked shell model. The many particle-many hole configurations created in the rotating Nilsson potential are mixed by the surface-delta two-body residual interaction. The levels in the near-yrast region
Introduction Common complications after surgical procedures include surgical site infection, wound rupture and incisional hernia. Wound healing can be influenced by the technique for abdominal access and closure. A Suture-Length to Wound-Length (SL/WLr) ratio ≥ 4 is advised to achieve a high-quality wound closure. This thesis describes the background and clinical realities of abdominal wall relate
A review concerning road tunnel fire safety and risk is presented. In particular different perspectives and methodson safety and risk are discussed. Road tunnel fire safety usually involves high uncertainty and high-stakes decisions.Thus, a wider group of stakeholders and different types of knowledge should be included in the fire safety analysisand evaluation, than what is required by technical r
In order to investigate whether oxidative damage is associated with differences in antioxidant intake, we measured the levels of 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodGuo) in lymphocytes and α-tocopherol and several carotenoids in plasma of women with different dietary habits. We found that women from Granada (Spain), a region with a typically Mediterranean diet, had significantly higher leve
This thesis describes the work done on two open access microcavities that aims at detecting single rare-earth ions for quantum information applications. The initial microcavity faced mechanical instability due to its geometry, which limited robust design possibilities due to the 25 mm diameter space of the helium bath cryostat. A Purcell enhancement of 2.2 was realized for nanoparticles at 2.1 K,
Fluorescence microscopy is introduced as a low cost quality control process for nanoimprint lithography. To depict imprinted structures down to 1 mum lateral size and to detect residues down to 100 nm lateral size, the standard printable polymer mr-18000 is labelled with less than 0.1 wt.% fluorescent dye. Three different types of stamps are used to determine the dependence of the shape and size o
