Perchlorate and chlorate are naturally occurring in the atmosphere, from here it sediments into groundwater and soil. The pollution is increased by discharges of perchlorate and chlorate from agriculture and paper mills. Bacteria capable of reducing perchlorate and chlorate to chloride and oxygen can be used to get rid of these contaminants. However an anaerobic environment needs to be sustained in order for this reaction to be used. For this reduction to work in an aerobic environment as well, a greater knowledge of the reducing enzymes, regulating factors and their corresponding genes is needed.

This report is a bachelor thesis presented at the department of Computer Science andEngineering at Chalmers University of Technology. The aim for the project is to find a simplemethod to measure and display physical quantities in a three dimensional room.The report describes a method to construct a system for measuring differentphysical quantities via sensors. The system must be built in a modular and expandable way tobe adaptable to different tasks.The system explained in the report consists of two parts;A physical scanner with moveable probes for carrying sensors and a microcontroller forcontrolling the probes and communicating with the next part.An application written in Java for storing the measured values and presenting them in a lucidperspective.It is possible to construct the scanner with different designs and circuitry, with multiplexers andflip-flops, to ensure that an unspecified number of probes can be added to the system and thatthey can be operated simultaneously.The Java application is written in a modular way, using a design pattern that separates eachindividual part of the application. It contains exceptions and interfaces that ensure a safe andexpandable application..

One of the most distinguishing features of contemporary globalisation is production fragmentation, a splitting up of the manufacturing of a good into several different stages. Production fragmentation creates new opportunities through vertical specialization; a country incapable of mastering the entire production process may specialize in the manufacturing of one separate part. The aim of this thesis is to examine to what extent international integration affects a country?s ability to engage in vertical specialization in an industry characterized by production fragmentation. The analysis focuses on the european integration process over the last decade, where countries in eastern Europe with relatively low labour costs have been integrated with more capital abundant western economies.

Enligt PISAs undersökning (Skolverket, 20I3) uppvisar svenska elever idag sämre prestationer i läsförståelse och matematik. Många påverkansfaktorer är omdiskuterade men varken lässvårigheter eller matematiksvårigheter har berörts. I relation till detta upprättas en litteraturstudie med syftet att undersöka huruvida lässvårigheter samverkar med matematiksvårigheter och hur det påverkar matematikprestationer. Resultatet av studien visar att lässvårigheter inte alltid påverkar matematiskprestationer. Somliga elever uppvisar svårigheter medan andra inte gör det, dock synliggörs kombinationen läs- och matematiksvårigheter oftare än svårigheterna var för sig.

People with Aspergers syndrome (AS) have proven difficulties maintaining jobs according to previous research. This is a quality study. Four women with AS were interviewed about their experience of employment. What difficulties and contributions have they experience at work? What is the self experienced need of support within the research group? The result has been analyzed with different types of ?support?.

AbstractThe aim for this study is to establish how teachers and supervisors at the Child and Recreation Programme interpret the concept ?vocational knowledge?. It is also about how they substantially can see that the pupils are developing vocational knowledge, during their work placement training. The aim of this thesis is to create a base for teachers to work with continuing development in teaching practice. The empirical part of this study is based on interviews. Interviews were analyzed in three categories: definition of vocational knowledge, substantially developing in vocational knowledge and success factors. The result shows that knowing how and knowing why is salient in vocational knowledge.

Today, maintenance is a big part of the daily life on board ships. It is also one of the bigger expenses a shipping company has and without any loss of quality tries to run as economically advantageous as possible. In the hunt for economical savings the shore-based industry has subsequently applied the use of condition based maintenance, CBM, were a component is maintained according to its actual state. This leads to a reduction of maintenance costs since no parts are unnecessarily replaced. However, within the maritime sector a periodical maintenance is still the most commonly used maintenance system.The purpose of this paper is to chart the factors that are the reason for the low implementation of CBM on board the Swedish merchant fleet's ships.

Cumulative effects are seldom treated in Swedish Environmental Impact Assessments (EIA). This report treats these questions and which procedures and methods that can be used when assessing cumulative effects in EIA. This report is a literature study where also a case study is a part. The case study shows how existing methods for cumulative effects can be used in practice. The report is concentrated on biology and treats cumulative effects on premises of biodiversity and roads. Cumulative effects include both direct and indirect effects.

AbstractSocial welfare workers employed in the same county base their assessments on the same laws, routines and guidelines, yet it seems that they sometimes come to different decisions. It's the discretion that enables the social workers to make individualized decisions adapted to each clients unique situation.The purpose of this paper is to examine social welfare workers reflections on discretion and what influences their discretion in the professional role.Six qualitative interviews were conducted with social welfare workers in three communitys i the middle of Sweden.The main result shows that it is primarily four factors that affect the social welfare workers discretion in the professional role :External factors such as other organizations change of regulations and cooperation with other organizations.Organizational factors such as routines, rules and guidelines .Professional factors such as the opportunity to use experience and professionalknowledge to determine which measure works in different situations.Individual factors like the workers ability for initiative and the clients individualcircumstances. Social welfare workers feel that they have a relatively wide discretion in their profession. They believe they have the ability to make individual evaluations of each client, however they also believe that their discretion often is limited by lack of time.Key words: social welfare workers, clients, discretion, assessments. .

AbstractThe aim for this study is to establish how teachers and supervisors at the Child and Recreation Programme interpret the concept ?vocational knowledge?. It is also about how they substantially can see that the pupils are developing vocational knowledge, during their work placement training. The aim of this thesis is to create a base for teachers to work with continuing development in teaching practice. The empirical part of this study is based on interviews. Interviews were analyzed in three categories: definition of vocational knowledge, substantially developing in vocational knowledge and success factors. The result shows that knowing how and knowing why is salient in vocational knowledge.

The purpose with this study was to see the relation between gymnastic pause and concentration to find out the students in a first grade experiences and thoughts about gymnastic pauses in the classroom. I have made a qualitative study to fulfill my purpose, I have observed students before and after the gymnastic pauses, carried through gymnastic pauses with the pupils and interviewed pupils in group.Previous research shows that the good working atmosphere and concentration has improved when pupils have had gymnastic pauses but it is difficult to say how it looks in the long term when the research doesn?t show that.In my study, it appears that the gymnastic pauses make it calmer in the classroom. Some of the pupils believe that they have had a better ability to concentrate after the gymnastic pauses while some pupils believe that they have not had a better ability to concentrate. Some pupils say it's good to get a break to carry on with the schoolwork during the entire lesson.

This thesis aims to further study the interpersonal risk taking within groups and thereby the importance of a climate promoting a reflective behavior. The increased demand in complexity and exposure towards teamwork leads to increased call for knowledge integration, which can be explained as the ability to integrate the collective knowledge within the group. We have therefor identified a need for better understanding what makes a group more effective. Key factors for self-estimated effective collaboration have been shown to be a group's reflective behavior and ability to coordinate the skills that each individual possesses. These factors are greatly affected by the psychological safety within the team.

The aim of the study was to do an analysis about the conceptions of units and unit con-version. Investigating the students´ attitudes towards their own mathematical ability and the students´ understanding of the conception of units..

The purpose of this thesis has been to investigate the effect of introducing the qualitystandard ISO 9001:2000 at Metso Paper Service in Sundsvall. The investigation has been focused on implementation of the new method of work, Continuous improvements. The implementation has been studied in a case study with both a qualitative and quantitative method. Continuous Improvements is a way of working focused on continuously increasing the efficiency and having the purpose of achieving the formulated goals. This is often accomplished by the organisation carrying out the changing process to a great extent in small but efficient teams.

The aim of the study was to examine the reading ability of adultswith intellectual and/or communicative disabilities. The group adults withintellectual and/or communicative disabilities consisted of 66 individuals.One control group consisting of 36 children aged 7 to 12 years and onereference group consisting of 14 adults were used. Participants were given anumber of language and reading related tests. Adults with intellectual and/orcommunicative disabilities had significantly lower results than the adultreference group regarding all tests and significantly lower results than thechild control group regarding phonological processing. There was nodifference between adults with intellectual and/or communicative disabilitiesand the child comparison group regarding word decoding and readingcomprehension.