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Development and analysis of a commercial hair mask Our degree project has been to develop and analyse a hair mask. We tried out different “recipes” for the hair mask in the lab, and then used different methods to evaluate our recipes to find out which one is the best. Like many other industries, the hair cosmetic industry is facing a change where customers are asking for a new type of environmenta
This project discusses the effects of recycle streams on the dynamics and performance of chemical plants. The questions addressed are: can the current industry standard tuning methods still be applied to systems with recycle, and if not, how can they be modified? This is approached by analysing the arrest time tuning method when applied to an integrating process with and without recycle. The resul
The overall purpose of the present thesis is to explore how participatory development architecture and the good governance principles of cooperation and consensus have depoliticised disability as an issue and have re-shaped the discourses and actions of organisations of and for disabled people in Georgia. Through the lens of the theory of post- politics, the research analyses the application of go
The increasing amount of renewable energy in the electrical grid comes with several challenges, of which overvoltage and congestion (overcurrents) are the subjects of this work. One flexible way of handling these problems is active management by some control system. There is a trade-off between simplicity when implementing the control system and the performance. In the project Active Network Manag
Adsorption of oxygen onto Cu(100) leads to formation of a well-ordered surface structure known as the `missing row' (MR) reconstruction. The aim of the work described in this thesis was to characterize the chemical properties of this MR structure, which serves as a well-defined analogue for oxidized copper surfaces used in catalysis for CO2 hydrogenation. Specifically, the interaction of CO2 w
For this thesis I have programmed and tested a particle simulator. It was coded in the Python programming language. In this simulator, both linear and non-linear elements can be used. The design philosophy was to make the program object-oriented for easy addition of new element types with a modular result. The Python language allowed for a smooth implementation and kept the code clear. In order to
Macroalgae are found worldwide dominating the aquatic ecosystems and representing a vast still sporadically explored resource with significant potential for mitigating climate change, constitute new food alternatives, provide sustainably fuel, and possibly be involved in new pharmaceutical discoveries. Despite limited research attention, ulvan, an irregular sulphated polysaccharide found in green
Amelogenin is an extracellular matrix protein which has an important role to play in enamel formation during tooth development. The need for amelogenin for research purposes in order to be utilized for its many potential applications have resulted in the rise of the production of recombinant amelogenin. So far, the most optimal expression system used for the production of recombinant amelogenin is
Nanocarriers and nanoreactors are often derived from viral capsids. The capsid of HBV is a particularly attractive self-assembling model, fit for conversion into protein carrier. In this thesis modified HBV capsid is expressed in E.coli and purified by size exclusion chromatography. Nanocarrier system is based on principle of specific binding between the modified capsid building block and protein
Recently a new way of constructing variable step-size multistep methods has been proposed, that parametrizes the entire domain of multistep methods. In the presented work the case of explicit two-step methods is looked at, analyzed and related to the already known theory of multistep methods. The error coefficient is derived as a function of the step-size ratio and an upper limit to the method dom
Swelling Properties of Pure Na and Ca bentonites Swelling of natural bentonite, with mono and divalent counter ions and mixture of both bentonites, in heavy water is studied. For this purpose, pure Na and Ca bentonites are prepared by ion exchange method. 2HNMR technique is used to measure qudrupolar splitting. Electrostatic interaction between platelets is mainly responsible in swelling in case
This thesis presented an in-depth qualitative case study of the peace process between the Colombian state and the FARC guerrilla from 2012 and onwards. The purpose of it was to problematize the peace process by investigating the prospects and pitfalls of negotiating peace within a neoliberal development model, by asking what reasons there are to believe that the process will lead to peace, contras
This thesis aims at comparing the differences between Chinese welfare system and Swedish welfare system in respects of maternity insurance, parental leave and childcare. The reason comparing welfare system in these specific aspects is because they have intense relations with the mothers’ and children’s benefits. They also influence the mothers’ will of pregnancy. Selecting these two countries as t
This thesis work focused on the study of a quadrotor helicopter. The dynamic system modelling and the control algorithm evaluation were carried out. To test the results, a simulator and a real platform were developed. The Newton-Euler formalism was used to model the dynamic system. Particular attention was given to the group composed of the DC-motor, the gear box and the propeller which needed als
