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This Master Thesis is about the Gasification of hammer-milled chipboard. The opening part is about general theory of bio-mass gasification and the gasification machines. Next there is a chapter about the products which are included in the gas after gasification and the methods, how to remove them from the gas. This thesis is about gasification legislative acts and novels too. The main body of the thesis is about the experimental gasification in Biofluid 100 machine. This machine is located in the Fakulty of Mechanical Engineering in Brno. There were the samples of gases and tars collected during the gasification. From this samples was made the analysis. Then the mass content BTEX, n-alkans and PAHs.According the process of experiments was set the procedure of gasification. Finally there was a evaluation of the chipboard gasification made.

The subject of this study is the business activities of an industrialist from county of Jämtland, Sven O Persson (S P), from the end of the 1910's to the end of the 1980's. The economic development of Jämtland during the last one hundred years has also been depicted and placed in relation to the national one, during periods of directional change and/or expansion. Of primary interest is the interplay between S P's business operations and the surrounding world.This research looks at S P's business activities both from a structural-analytical perspective and an entrepreneurial. Sven Persson's operations commenced in Jämtland at the end of the 1910's with horse dealing, and the first woodland properties were acquired in 1926. Early on (1932) he linked his operations to the development of the motor vehicle. Up until the middle of the I960's the transport sector was the foremost driving force behind his business expansion. Sven Persson's widespread net of personal contacts provided him with information of important sections of the county's economy, which made it easier for him to discover and capitalize on the business opportunities opened by the breakthrough of the trucking industry the timber boom and the regulated economy of the W W II. It is worth mentioning that his operations integrated Östersund's advantages with those of the countryside and business activity was thus largely independent of the geographical location of this agrarian county and the long distances to populated, affluent markets. After the founding of Persson Invest (PI) in 1968 business operations grew rapidly and principally outside the county, and the main product was then chipboard. The hardening competition in the economy had enabled the concern to acquire insolvent companies and/or firms whose assets were too small to meet future investment costs. In the first year of business of this concern the number of employees was around 500 and in 1976 it had risen to almost 1,750. The new areas included the manufacture of agricultural and forest machinery and snowmobiles and three breweries. By 1980, however, the number of employees had decreased to about 1,100. During the following ten-year period the downswing was broken and employment increased to some 1,300 by 1990. The downswing was mainly due to rationalizations, profitability problems and the sale of Pi's agricultural machinery division. The 1980's upturn was mainly due to new acquisitions within the chipboard industry and the purchase of a large Volvo dealership in Norway. With the sale of the breweries in 1989 the sphere of business was thus nearly the same as in 1968. In a structural-analytic context the concern's acquisitions 1968-1976 were not successful. Rationalization was already far advanced in several of the firms when the takeovers took place, and their operations were centered in stagnating and/or shrinking markets. Using Erik Dahmén's terminology, it was a matter of companies whose production was on the negative side of the developmental fence. The concern's manu­facture of chipboard, however, had great success. A central role in that development can be ascribed to low capital costs. Profits from the car dealerships, regional development grants and the acquisition of chipboard firms explain the low cost. Sven Persson's entrepreneurial talent was to discover opportunities offered by the market at an early stage and to capitalize them, as in the case of the car dealership and the chipboard manufacturing. Other charac­teristic traits was to make decisions based on informal conversations, intuition and personal evaluation, instead of formal decision-making, economic analyses and market research. / digitalisering@umu

Mittuniversitetets forskningsavdelning Sports Tech Research Centre (STRC) driver sedan en tid tillbaka ett projekt i samarbete med Svenska Skidförbundet. Syftet med projektet är att bidra till det alpina landslagets framgång genom att utveckla fartdräkterna som åkarna använder, främst genom att minska fartdräktens påverkan av luftmotståndet. En del av projektet innefattar vindtunneltester av dessa fartdräkter för att mäta dess luftmotstånd. Syftet med detta examensarbete är att bidra till fortsatt utveckling genom att underlätta dessa tester. Syftet är även att undersöka och utvärdera en ny tillverkningsmetod för att designa och tillverka testdockor avsedda att använda i vindtunneltester. Målet var att designa och tillverka en testdocka utifrån en alpinskidåkare på elitnivå. Dockan skulle kunna kläs i en fartdräkt och användas i en vindtunnel, och där visa likvärdiga mätvärden för luftmotståndet som för testpersonen och en lägre standardavvikelse. Arbetet började med att skanna testpersonen som testdockan skulle skapas utifrån. Fotogrammetri användes som skanningsmetod. Därefter följde 3D-modellering och beredning inför tillverkningen. Testdockan tillverkades av horisontella spånskivelager sammanfogade med varandra. Jämförande vindtunneltester utfördes sedan på testdockan och testpersonen den är skapad utefter, i syfte att validera dockan och uppnå liknande mätvärden. Den resulterande 3D-modellen från skanning och 3D-modellering kunde valideras mot testpersonens verkliga mått och var därför användbar för att tillverka den fysiska testdockan. Resultatet efter montering och ytbehandling var en fysisk testdocka som kunde kläs med fartdräkt och tillhörande utrustning. Dockans dimensioner stämde överens tillräckligt bra med testpersonens dimensioner. Vindtunneltesterna visade på ett luftmotstånd på ca 19,8N för testpersonen och ca 28,1N för testdockan. Detta beror troligtvis på skillnader mellan deras positionering. Standardavvikelsen av luftmotståndet för testpersonen och testdockan var ca 3,76N respektive ca 4,33N. Fotogrammetri följt av 3D-modellering i Rhino lämpade sig för denna typ av modell med organiska former. Tillverkningsmetoden krävde mycket efterarbete men gav ett bra resultat i just detta arbete, där de minsta detaljerna som t. ex ansikte och händer inte var av största vikt. Målet att tillverka en testdocka med fungerande funktioner uppfylldes. Ökningen av standardavvikelsen för testdockans luftmotstånd gör att den delen av målet inte uppfylldes, men ytterligare undersökningar behöver utföras innan slutsatser kan dras om dockans användbarhet. / Mid Sweden University's research department Sports Tech Research Center has been running a project in collaboration with the Swedish Ski Association for some time. The purpose of the project is to contribute to the success of the Swedish alpine national team by developing the race suits that the riders use, mainly by reducing the race suit's impact on air resistance. Part of the project includes wind tunnel tests of these race suits to measure its air resistance. The purpose of this thesis is to contribute to further development by facilitating these tests. The purpose is also to investigate and evaluate a new manufacturing method for designing and manufacturing test dummies intended for use in wind tunnel tests. The goal was to design and manufacture a test dummy based on an alpine skier at an elite level. The dummy was to be dressed in a race suit and used in a wind tunnel, and there show equivalent measured values for the air resistance of the test person and a lower standard deviation. The work began with scanning the test person from whom the test dummy was to be created. Photogrammetry was used as the scanning method. This was followed by 3D modulation and preparation for production. The test dummy was made of horizontal chipboard layers joined together. Comparative wind tunnel tests were then performed on the test dummy and the test person it is created from, in order to validate the dummy and achieve similar measurement values. The resulting 3D model from scanning and 3D modulation could be validated against the test person's actual measurements and was therefore useful for manufacturing the physical test dummy. The result after assembly and surface treatment was a physical test dummy that could be dressed in a speed suit and associated equipment. The dimensions of the dummy matched well enough with the dimensions of the test person. The wind tunnel tests showed an air resistance of about 19.8N for the test person and about 28.1N for the test dummy. This is probably due to differences between their positioning. The standard deviation of the air resistance for the test person and the test dummy was about 3.76N and about 4.33N, respectively. Photogrammetry followed by 3D modulation in Rhino was suitable for this type of model with organic shapes. The manufacturing method required a lot of finishing work but gave a good result in this particular work, where the smallest details such as the face and hands were not of the utmost importance. The goal of manufacturing a test dummy with needed functions was met. The increase in the standard deviation of the test dummy's air resistance means that part of the goal was not met, but further investigations need to be carried out before conclusions can be drawn about the dummy´s usefulness / <p>2022-07-01</p>