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517 Uppsatser om Particle concentration - Sida 5 av 35

Spänningsanalys av axel-länkmekanism på borr-rigg

This master thesis is intended to give an increased understanding of the stress state in an axle, which is assembled in one of Atlas Copco?s mountain drilling rigs. The main problems investigated were how the axle is affected when the bearing is worn, when the pretension is varied, and how to dimension the axle. Answers to these questions were found by using hand calculations, practical testing and with Finite Element analyzes. The dimensioning of the axle is currently based on the bending stress, but the author?s opinion is that the axle should be dimensioned considering the equivalent stress.

Arbetsprov i fält på ridhästar

Sport horses are widely used for performance in jumping, dressage, endurance etc. To enable comparisons of horses, training facilities, programs or physical status, an exercise test can be used. Exercise tests are also important to increase knowledge about exercise physiology of the horse considering different ways of training to compare training methods or individual qualities, development of an individual or other investigations of equine exercise physiology. Since several investigations are done on standard- and thoroughbred horses but less on sport horses, it is of great importance to get an overview of the investigations done. Most common is to investigate heart rate and lactate concentration.

Lärares uppfattning omutomhuspedagogikens påverkan på barn med koncentrationssvårigheter : ? i den traditionella undervisningen

The objective for this study was to acquire a greater insight if children with concentration difficulties are assisted by outdoor education in the traditional teaching. With the use of a qualitative methodology four teachers were interviewed. The outcome gave evidence for that the teachers thought that outdoor education has a positive outcome for children with concentrations difficulties. The findings were divided into three key categories: the teacher?s reflections about outdoor education, outdoor education for children with difficulties in concentration and if there was any difference in how the children behaved indoors after having educations outdoors..

Hälsoskolor kontra ?vanliga? skolor : skiljer sig undervisningen i ämnet idrott och hälsa?

AimThe purpose of this study is to investigate how schools who have a health concentration and schools who haven?t are teaching physical education and if possible compare these schools.This study is based on following questions: How do schools with a health concentration and schools who haven?t, in compulsory school, teach physical education and health. How do physical education teachers describe their teaching and how do the students describe it.MethodMy study is a qualitative study based on interviews with teachers and students from different schools. The interviews have been made on four different schools from all over the country. I have interviewed one physical education teacher and four students, two boys and two girls, from each school.

Analys av haptoglobin i bovint serum med surface plasmon resonance biosensorteknik :

The concentration of acute phase proteins in serum is altered as a response to inflammation, infection or trauma. this makes these proteins potential biomarkers of unspecific pathological processes. In cattle, haptoglobin and serum amyloid A are the two acute phase proteins that show the largest increase in serum concentration as a result of inflammatory processes. The haptoglobin concentration has been shown to correlate to clinical signs as well as inflammatory processes found at post mortem examination. This feature could be useful prognosis of the individual as well as for monitoring the health status of a herd or identifying carcasses that shold be examined closer at the slaughter-house.

Provtagning av trädkärnor för att bedöma föroreningsgraden av klorerade lösningsmedel i grundvatten

Chlorinated aliphatic hydrocarbons (CAH´s) were used widely within dry cleaning facilities and for metal degreasing until their toxicity was discovered. PCE is still used as dry cleaning liquid. Today CAH´s are found in soil environment at places where they have been used in the past. The CAH-concentration in trees growing on contaminated land has quite recently received attention as a cheap and effective way of assessing the extent of a CAH-contamination. The method has however, not been put into use in Sweden.The aim of the study has been to investigate whether the CAH-concentration in tree cores could be used to delineate the spread of CAH in a soil environment under Swedish conditions in different seasons.

Uptake of 137Cs by fungi and plants due to potassiumfertilization in Heby municipality in response to theChernobyl nuclear accident

The fallout from the Chernobyl nuclear accident resulted in large deposits of caesium, iodineand strontium as well as noble gases in various parts of Sweden. 137Cs has a radioactive halflifeof about 30 years and is therefore one of few radio-fission products remaining inmeasurable quantities in the Swedish soil. Radiocaesium behaves similarly to potassium insoil-plant systems and is easily absorbed by plants. It is important to understand how 137Csbehaves in different ecosystems in order to minimize the risk toward humans.The aim of this study was to determine how potassium fertilization influences radiocaesiumcontent in different forest plants and fungi. Potassium fertilizer was spread once in 1992 withapproximately 200 kg KCl per ha.

Initial evaluation of the Meritas Troponin I test for measurement of equine cardiac troponin I

Cardiac troponin I (cTnI) is considered a specific and a sensitive biomarker of cardiac disease, and due to a high inter-species sequence homology; human cTnI assays can often be used in veterinary medicine. The main aim of this study was to perform an initial evaluation of a human cTnI test, the Meritas Troponin I test, for measurement of equine plasma cTnI, in order to investigate whether the test could be a possible subject for a more comprehensive validation. The hypothesis was that the test could measure equine cTnI, as there is a good homology between equine cTnI and human cTnI. The evaluation included a dilution parallelism, an intra-assay precision study and measurement of plasma cTnI healthy horses. In the dilution parallelism and the intra-assay precision study, equine plasma with previously established high cTnI concentration, according to another cTnI assay, was used. In addition, cTnI concentration was measured in plasma, collected from 19 horses, without signs of disease at physical and ECG examinations. The obtained curve in the dilution parallelism was linear, indicating that the Meritas Troponin I test can be used to measure different concentrations of equine cTnI in plasma.

Diagnosens värde i den pedagogiska planeringen för koncentrationsstörda barn i skolan

In my composition, I have choosen to examine the question: What value does the diagnoses have for the teacher when it comes to organizing the work with children troubled by apprehensive disabilities?The method I used to examine my question was qualitative interview.The teachers? I have interviewed are either pre-schoolteachers or schoolteachers.Most of the teachers speak highly of using methods like Komet or SET in the work with the pupils troubled by deficits in their ability to concentrate.During my investigation, I have learned that the teachers think that methods like the above mentioned may help preventing some of the problems at school.Former research as well as the interviewed teachers are saying that rules and structure are very important when you are teaching children troubled by deficits in their ability to concentrate.The teachers are feeling just like me, a little bit insecure when it comes to the diagnoses and most of the time the diagnoses just confirm what the teacher already knows.My intention with this study was to aquire a deeper understanding of what it means to have concentration disabilities and to broaden my knowledge of what the teacher can do to ease the years at school for these children.Keywords: Concentration disabilities, teachers, diagnose, educational planning.

När solen går ner : Japan som skådeplats för en negativ modernitet

Den här studien gjordes för att undersöka om lärare uppfattar ett samband mellan elevers koncentrationsförmåga och fysisk aktivitet i skolan. Den baseras på en enkätundersökning som gjorts i årskurserna 1-5 på sju olika skolor i närområdet. Studien visar ett positivt samband mellan all fysisk aktivitet i skolan och lärarnas uppfattning av elevernas koncentrationsförmåga, vilket även kopplats samman med tidigare forskning inom närliggande områden. Nyckelord: physical education AND concentration, physcial activity AND concentration ability, physcial acitivty AND effect in school, excercise AND brain, physical education AND brain..

Nischbanker - potentiella dynamikskapare

The banking industry is a fundamental part of the economy in Sweden. Despite its importance, the competition and the concentration level within the Swedish banking sector is relatively unexplored. This paper aims to examine the development of the concentration level in the Swedish banking sector during a period of ten years, 2003 to 2013. The examined banks in the study are the four largest banks in Sweden; Handelsbanken, Nordea, SEB and Swedbank, and four selected niche banks, ICA banken, Ikano Bank, Länförsäkringar Bank and Skandiabanken. In order to examine the development in percentage change, there are six selected variables; loans, deposits and borrowings (both public and households), net interest income and return on equity, which are observed during a period of ten years.

Testikelmått och daglig spermieproduktion hos svenska halvblodshingstar :

Testicular measurements and daily sperm output (DSO) are important factors affecting reproductive capacity of stallions. In the present study testicular measurements of 10 Swedish half-blood stallions were determined (height, length, width and volume). Ejaculates were collected from each stallion once daily for 10 days to evaluate some important seminal characteristics: gel-free ejaculate volume, sperm concentration, percent progressively motile spermatozoa and total number of spermatozoa (TSN). The gel-free ejaculate volume was measured with a graduated cylinder, the sperm concentration was counted in a Bürker chamber, the sperm motility was estimated in a phase-contrast microscope and TSN was determined by multiplying the gel-free seminal volume by the sperm concentration. Testicular measurements were as follows (left and right testis): height 7,5 cm and 7,8 cm, length 10,6 cm and 10,8 cm, width 6,5 cm and 6,6 cm, volume 278,2 cm3 and 293,8 cm3, scrotal width 12,3 cm and total testicular volume 572,0 cm3 .

Likviditetsva?gen till mer informerade investeringsbeslut : En studie om sambandet mellan a?garkoncentration och likviditet pa? Nasdaq OMX.

Abstract Master Thesis in Business Administration, School of Business and Economics at the Linnaeus University, 2013 Authors: William Funseth and Tobias Åkesson Supervisor: Magnus Willesson Examiner: Sven-Olof Yrjö Collin Title: The liquidity route to more informed investment decisions - A study on the relationship between concentration of ownership and liquidity on Nasdaq OMX. Background and problem: Previous studies have shown that liquidity can explain differences in returns in corporate shares, the company's cost of capital and the valuation of the company. Based on the effects of liquidity we developed a research question concerning how concentration of ownership effects liquidity of corporate shares the studies conducted for companies listed on Nasdaq OMX during a period with major changes on the stock market and is also investigating weather other company-specific differences can explain differences in liquidity. Purpose: The study's purpose is to study the relationship between ownership concentration and liquidity, and whether other factors might explain differences in liquidity. Method: The study is conducted with a quantitative method and it?s based on data collected from 2006-2011 for companies listed on Nasdaq OMX.

Rörelsens inverkan på barns inlärning : En studie om hur fysisk aktivitet påverkar barns inlärning utifrån ett fåtal lärare och elevers åsikter

The purpose of this investigation is to find out how the children?s exercises affect their learning capabilities. With exercise, I mean all kinds of movements, like physics, walks and games.The method I will use in this investigation is interviews, where I choose to interview both teachers and their pupils at a school which uses an exercise-program called röris. Röris is an exercise program which involves moving to music. I also choose to look at Bunkefloprojektet, were scientists has investigated how the power of concentration is affected by exercise.My conclusion from the interviews and the literature is that I can?t prove that the children?s exercises affect their learning capabilities.

REE-förande fosfater i Blötbergets apatitjärnmalm

The Blötberget deposit is situated in the north-western part of Bergslagen. The mineralization is an apatite-iron oxide ore of Kiruna type. In Bergslagen the apatite-iron oxide ores occur along a zone from Grängesberg through Blötberget to Idkerberget in the northeast and they represent the largest and the most important iron oxide deposit in Sweden, south of Norrbotten.Different REE hosting phosphate phases has been studied by optical microscopy and analyzed by EDS attached to an electron microscope.The key minerals other than iron oxides are apatite, monazite and xenotime. The relative concentration of the REE-bearing phases differs from the other apatite-iron oxide mineralizations in the area, for example Grängesberg, by a higher concentration of xenotime and lower contents of allanite..

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