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This thesis describes bio-ethanol production and use for transport fuel in Ethiopia, focusing on current status and potential, barriers, implications and recommendations for a sustainable market. The need for such research is justified as it paves the way for bio-ethanol development in Ethiopia towards a more sustainable path as challenges are surmounted. Bio-ethanol from molasses is identified in
NIMCO Controls AB is a company located in Malmö, Sweden, that manufactures hydraulic valves mainly for the farming industry. They proposed me to work on three independent design projects to renew their product range. The first topic was a platform research for handgrips. As the company uses lots of different lever systems that need a handle, the main objective was to design a platform which deriva
Bangladesh is known to be the country worst hit by environmental changes at the same time as it is a densely populated country in South Asia. Questions of climate change have been debated during the last decades and the voices of the affected have now also been heard. Bangladesh will lose land as the sea level rises and floods occur more often. People have to escape these challenges and move to a
Computer simulation and modelling was used to simulate a real time environment in preparative chromatography to evaluate the performance of three different strategies for pooling control for different levels of robustness. The pooling problem was based around a separation case where three different insulin species were to be separated while disturbances to the modulators potassium chloride, ethano
The purpose of our study is to determine the importance of oil exports in relation to GDP in countries located in Sub-Saharan Africa when it comes to promoting economic growth. Due to the fact that oil accounts for approximately 40 percent of the world’s total energy production, and is predicted to do so for at least 45 more years to come, we found this a highly relevant topic to look into. At th
The ‘superman’ does not simply carry the accustomed drives and strivings of the customary type of man beyond all measures and bounds. Superman is a qualitatively, not quantitatively, different form of existing man. The thing that the superman discards is precisely our boundless, purely quantitative non-stop progress. The superman is poorer, simpler, tenderer and tougher, quieter and more self-sacr
In 1999, purchase of sexual services (6 Ch. 11 § The Swedish Penal Code, The Act against the purchase of sexual services) was criminalized in Sweden and the debate about it has been ongoing ever since. Previous research has primarily been attitude studies concerning social norms as well as research criticizing state agencies’ attitude towards people with experience of selling sex. Inspired by thes
A combination of acoustic trapping and impedance spectroscopy for micrometer-sized objects is here presented for the first time. Acoustic trapping has proven to be a well-functioning method for non-contact immobilization and positioning of particles or cells in microfluidic channels. The combination with impedance spectroscopy allows for simultaneous electrical measurements on the trapped objects.
Development of environmentally friendly and cost-efficient energy sources has been a challenge for modern society since long ago. Sunlight is an infinite and costless source of energy on Earth, so it would be an enormous advantage to efficiently harvest and transform it into electrical energy used in our everyday life. In nature the process, which converts light energy into chemical energy, is cal
In this thesis, simulation of coupled dynamic models, denoted sub-systems, is analyzed and described in a co-simulation context. This means that the respective coupled systems contain their own internal integrator, hidden from the coupling interface. Co-Simulation is an interesting and active research field where industry is a driving force. The problems where co-simulation is an interesting appro
The study of rapid and stochastic events that involve multiple species, such as chemical reactions and plasma dynamics, requires means to capture multispectral information in two dimensions at both high temporal- and spatial resolution. Commercially available cameras that provide high temporal resolution are based on either signal intensification or rapid data acquisition. Intensified cameras prov
The minimization of the total variation is a well-established technique of preservingedges and discontinuities. Therefore it has wide applicability in image processing,where one is interested in recovering a corrupted image while preserving edges inthe image. In the last decades, in the literature, there have been introduced manydifferent approaches and algorithms for minimizing the total variatio
When treating pregnant women with antiepileptic drugs (AEDs), clinicians have to balance potential fetal adverse effects against the risks of uncontrolled maternal disease. Only recently have emerging scientic data provided a rational basis for treatment decisions considering both aspects. The focus of research is currently moving from the first to the second AED generation. Lamotrigine is relativ
Gaucher disease (GD) patients cannot metabolize glycosphingolipids properly due to deficiency of the enzyme glucosylceramidase (GCase). The lack of animal model for GD has hindered comprehensive investigation of disease mechanisms and also the development of curative treatment strategies such as hematopoietic stem cell (HSC) targeted gene therapy. Previous GCase deficient mice have either been let
Increasing nutrient concentrations (eutrophication) and water color due to dissolved organic matter (brownification) pose continuous threats to freshwater ecosystems worldwide, threatening ecosystem services like drinking water supply. Changing the increasing trends of eutrophication and brownification on our aquatic ecosystems is challenging. However, constructed wetlands could be a potential loc
This thesis presents fundamental studies on oxide-based catalysts and model catalysts used for the synthesis of renewable fuels. The two investigated oxide catalysts are In2O3(111) model catalysts and NiMo-oxide catalysts.The In2O3(111) surface is studied as a model system for In2O3-based catalysts used for CO2 hydrogenation to methanol. Specifically, the interaction of In2O3(111) with CO2, syngas
Electronic commerce (E-commerce) is one of the issues that are expected to influence the various logistics and supply chain processes/operations including: production, packaging, warehousing, transportation, etc. Consequently, the environmental implications of E-commerce are of concern and interest. In this regard, there are some pilot studies, but they are unable to deliver conclusions or general
