The purpose of this study was to evaluate the different substrates that enter the digestion on Sundet wastewater treatment plant for production of biogas.This work have done an analysis of data about the biogasproduction from January 2012 to feburari 2013, this showed that the food substrates has a greater gas production than internal sludge.Through laboratory test the VS, TS and COD values for all the substrates used in the biogas production could be determinded. But the COD-method was less optimal for analysis of fat and food, therefore it optimized the method for fat but due to time constraints, this could not be done on the food substrates..

Denna studie inriktar sig på pedagoger som arbetar medvetet med sin matematikundervisning i förskolan och skolan. Vi använder begreppet matematikande som står för all den verksamhet som innehåller matematik i alla dess former. Frågeformuleringarna är fokuserade på hur pedagoger tänker om grundläggande matematikkunskaper, arbetssätt och arbetsformer samt dokumentation. Studien bygger på sex kvalitativa intervjuer. Urvalet av pedagogerna har gjorts utifrån vetskapen om att de har satsat aktivt på sin matematikundervisning.

The purpose of this essay is to examine when teachers choose to discuss mathematics withstudents rather then just talk about mathematics. A definition where used to distinguish betweenan interaction that is not a discussion and an interaction that is a discussion. This definition hasbeen created by drawing ideas from other works into making a quite simple definition whichtherefore is easy to observe. The discussions are also separated into two different kinds ofdiscussions. The first and most common category of discussion are one where only imitativereasoning is used.

The aim of this study is to investigate into the use of discussions in the classroom to help the pupils develop a deeper understanding of mathematical concepts and operations. The empirical data contain interviews with two teachers and observations from their lessons. The purpose of the interviews was to find out what importance the teachers ascribed to the ability of their pupils to talk about mathematics, and how they organised their classes to encourage mathematical discussions. With the observations, I was able to see the interaction in the classroom and hear discussions between the teacher and the pupils, as well as between the pupils themselves.The interviewed teachers proved to share my own belief in the results of researchers like Malmer (1999) and Löwing (2006) about the importance of verbal discussion, argumentation and reflection during mathematics classes. But convictions derived from the research of others are one thing, the practical application of the wisdom in the classroom another.

Recently I discovered that preschool education has evolved from integration of various subject contents and working methods. The purpose of my study is to investigate preschool teachers' attitudes and ways of working with a theme-oriented approach. I also want to examine their opinions regarding the integration of subject content in terms of mathematics and science subjects (NO) in preschools theme-oriented work approach.My questions for this study are:What is a preschool teacher's attitude and their ways of working to a thematic-oriented approach?What is a preschool teacher's opinions regarding the integration of subject content, especially in mathematics and science subjects (NO) in their pre-schools theme-oriented work approach?I have used myself a qualitative method of investigation to produce materials for my research project. I collected my empirical material for my study from the semi-structured interviews that was done with four preschool teachers in two preschools in Botkyrka municipality.

A pavement construction designed to cope with the different type of traffic loads; it is exposed to and at the same time it can resist the effect of the climate. A road structure consists of sub- and superstructure which is divided by a boundary known as terrace. During the construction of unbound layers (base course and sub-base course) in the superstructure, it is always ensured that the material meet the requirements for bearing capacity and the degree of compaction. These parameters are controlled by various laboratory tests and control methods. To obtain increased knowledge of the material and improve the quality of the compaction in the field, it is necessary to perform laboratory tests in order to determine material properties.A base course material 0/ 32 mm limestone from Gotland (Hejdeby) was investigated in this study.

SvenskaDetta är en kvalitativ studie som är baserad på semistrukturerade intervjuer. Syftet med detta arbete är att ta reda på hur två matematiklärare och en specialpedagog ser på/beskriver matematik­svårigheter och hur de arbetar med elevernas matematiksvårigheter som de upp­täcker hos sina elever. Jag är väldigt intresserad av att höra vilka matematik­svårigheter och orsaker till matematiksvårigheter lärarna ser hos sina elever samt lära mig hur skolan och lärarna jobbar med dessa svårigheter hos eleverna. Samtliga informanter hade samma svar på mina forskningsfrågor. I resultaten av hela min studie har jag kommit fram till att orsaker till elevernas matematiksvårigheter bland annat är: dåliga baskunskaper, låga baskunskaper förståelse av positionssystem samt begrepp.

I vilken grad ett barn är fonologiskt medvetet är i många fall avgörande för hur barnets läsinlärning kommer att fortlöpa, varför det är av stor vikt att redan tidigt arbeta för att stärka den fonologiska medvetenheten. En tillfredsställande läsförmåga är central för inlärningen även i andra skolämnen än svenska. Forskning har på senare tid visat att det finns ett tydligt samband mellan läs- och skrivsvårigheter och svårigheter i matematik. I denna studie undersöks huruvida det finns någon koppling mellan tidiga fonologiska svårigheter och matematiksvårigheter två år senare hos en grupp elever. Med kvantitativa metoder och genom analyser av bedömningar i olika diagnos- och kartläggningsmaterial har ett resultat kunnat presenteras som visar att majoriteten av de elever som i förskoleklassen uppvisade tecken på fonologiska svårigheter även hade matematiksvårigheter i år 2.

SvenskaDetta är en kvalitativ studie som är baserad på semistrukturerade intervjuer. Syftet med detta arbete är att ta reda på hur två matematiklärare och en specialpedagog ser på/beskriver matematik­svårigheter och hur de arbetar med elevernas matematiksvårigheter som de upp­täcker hos sina elever. Jag är väldigt intresserad av att höra vilka matematik­svårigheter och orsaker till matematiksvårigheter lärarna ser hos sina elever samt lära mig hur skolan och lärarna jobbar med dessa svårigheter hos eleverna. Samtliga informanter hade samma svar på mina forskningsfrågor. I resultaten av hela min studie har jag kommit fram till att orsaker till elevernas matematiksvårigheter bland annat är: dåliga baskunskaper, låga baskunskaper förståelse av positionssystem samt begrepp.

Today the individual ventilated cage system (IVC-system) is a commonly used housing system for mice in research facilities. IVC systems have HEPA- filters and are designed to control both supply and exhausted air at cage level, as well as temperature and relative humidity in the cages. This creates an optimal environment for the mouse and at the same time a protection against the risk of cross-infection between cages and the outside environment. The aim of this study was to evaluate the health and welfare of breeding females and pups of two different strains of laboratory mice (NMRI nude mice and C57BL/6N) in three different kinds of IVC-systems; Arrowmight, Allentown and Tecniplast. The NMRI nude (Nu) females gave birth to 18 litters in Allentown, 16 litters in Arrowmight and 15 litters in Tecniplast.

Södra Cell Mörrum is one of the five paper pulp plants that are included in Södra Cell, and the paper pulp that is produced here is not only sold to Swedish paper mills. Most of the paper pulp is exported to different countries in Europe. In the manufacturing process the plant needs different kind of process water and there are guideline values for how much copper, iron and sodium this water is allowed to contain. Analyzes of this water is in the current situation done with an atomic absorption spectrometric instrument (AAS-instrument) with a flame. Measurements done with flame-AAS of samples that have concentrations near the guideline values for copper, iron and sodium, are not reliable. The reason for not being reliable is that the quantitation limits of these metals are higher than the limit values.

Hur man kan arbeta med matematik i grundskolan, år 4-6, på ett varierande och verklighetsnära sätt. En studie av litteratur om detta och lektionsförslag utifrån litteraturstudien samt Internet och grundidéer från praktiktid..

Today the human being see energy as a matter of course but the resources that is used for extract energy is today not enough for the world demand. Of all the energy that is used in Sweden today approximately 40 % goes to the building stock. This number will most likely increase if not necessary actions will be made on the already existing building stock since new houses constantly are built which will be added up on the already existing energy supply. This takes cause of action on the already existing building stocks, to fulfill the demands of the future use of energy that has been set by the authority. At the same time the thermal conditions cannot be influenced by the necessary changes that must be made.

The aim of my examination work was to compare and research how russian respective swedish teachers make use of educational aesthetic methods such as drawing, drama, music and dance in the teaching of core school subjects ? mathematics and swedish respective russian languages. The aim of this work was to find out which of these methods are used by pedagogues in the process of education and on what level are they integrated into the theoretical pedagogic work. The point was to also analyse the regulation documents used as pedagogical base in schools i've been doing my survey in. This was done to partly find out what arts perspective is given in the curriculum and partly to see what pieces of it are reflected in the process of education.

In conventional viscose manufacturing, a large amount of carbondisulfide is consumed. This amount has to be decreased to keep the production cost down and to reduce the environmental impact. The purpose with this work was to show if an enzyme treatment of a dissolving pulp could increase the degree of substitution in the viscose so that the amount of carbon disulfide consumed in the process could be decreased. Previous investigations by Kvarnlöf (2007), Engström et.al. (2006) and Henriksson et.al.