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697 Uppsatser om Wood density - Sida 26 av 47

Produktspårning med RFID : Konceptutveckling och utvärdering

The aim of this thesis was to investigate the possibility of integrating an item tracking systemwith a monitoring system currently under development at Fifth Generation Technologies (P) Ltd.A literature study of RFID technology and the networks ZigBee and MiWi was done. Based onthe literature study a concept for a distributed system was developed.The concept is to have several RFID readers placed in the area where tracking is to be performedand allow them to communicate with each other through wireless communication. The RFIDreaders shall be able to form zones and filter the data that is forwarded from the zones to theservers and thus perform some of the work that the server would normally have to do. Theconcept has been evaluated by prototype development and testing. The prototype uses an ultrahigh frequency RFID reader and a MiWi network.The test indicated some limitations with the selected technologies.

Det medeltida Fårö - en studie av en ödegård utifrån ett genusperspektiv

The aim of this study was through applying a new perspective reach the people who during medieval time lived and worked on the farm. On the basis of my previously study and a gender perspective this study have compared general literature with local and then interpreted the farm from a local context. The questions raised here concerns division of work and spatial distribution on the farm as well as local impact on gender constructions.This study resulted in interesting problems within the archaeology itself but also in significant details about the farm. No gender restrictions could be seen in the houses except in Hus 1 were a smaller space, which probably used as storage or a workshop had been restricted tomales. Instead the buildings social space mainly consisted of a mixed gender environment.

Vad styr förekomsten av sälg och asp? : en studie av olika beståndstyper inom Hamra kronopark, Dalarna

Aspen (Populus tremula L.) and goat willow (Salix caprea L.) are two important tree species in the aspect of nature conservation. Due to the elimination of forest fires, a former negative attitude towards deciduous trees in forestry and a strong herbivore pressure, these tree species have been negatively affected during the last fifty years. The aim of this study was to investigate whether the occurrence of aspen and goat willow could be related to either human impact or to site properties, such as ground moisture and vegetation type. A side study included an inventory of a number of cyanobacterial tree lichens on aspen and goat willow in order to try to relate the occurrence of these lichens species to stand history and stand properties. The study was performed in Hamra State Forest in northern Dalarna. Nature reserves were compared with stands in managed areas.

Änglar och sorg : Angels and mourning

What psychologial processes are activated in experiencing mourning after a loss of a belovedperson? How is death described in other authors? novels and short stories compared to mine?This essay aims at analysing my two short stories The follower and The price for love fromdifferent aspects. I discuss the psychological realism and the spirituality using the method ofclose reading, interpreting and applying ideas of texts from other authors in my short stories.Death is a central phenomenon in both of my texts. Therefore I discuss death frompsychological and philosophical aspects in this essay. To get a philosophical frame of death Iturn to Jacques Derrida, Emmanuel Levinas and Martin Heidegger.

Elektronisk Handel : Framtagning av två implementeringsmodeller

This report is about helping Q-Med AB in Uppsala to start its implementation of uncertainty of measurements analyses in their manufacturing department. Prior to this, the company relied solely on personal experience or did not take this uncertainty into consideration at all during different kind of measurements, which means that some of the processes that the company previously believed were within specified acceptance limits, will actually fail when considering these sources of uncertainties.Q-Med AB needed some sort of instruction to help the company, in a systematic way, to investigate different types of disorders that are affecting all kinds of measurements. This instruction includes a short summary about measurements and uncertainty of measurements in general and a detailed procedure about how these uncertainties are going to be handled in their daily work.The goal was to be able to use this instruction to systematically locate, eliminate (when possible) and analyze all kinds of disorders when measuring. Q-Med is using a lot of different types of instruments when measuring different types of quantities, including temperature, mass, pressure and density. This instruction will hereafter be used for every instrument, regardless of quantity and type of instrument.The instruction is tested through 4 different kinds of measurements, for mass, temperature and humidity.

Effekter av studie- och yrkesinriktad vägledning på gymnasieskolan ? Effekter av vägledning, avseende gymnasieelevers valda program

The purpose of this study was to investigate the effect of educational and vocational guidance, refer-only high school students tend to stay on their first selected program or to change the program. The theories used in the study deals with young people's choices and choosing education and vocational and life role as a student. The method was quantitative, descriptive survey. High school students in grades three, from two high schools, were asked to answer a questionnaire about perceived educational and vocational guidance. Convenience sample consisted of 162 respondents (N = 162), 86 women and 76 men.

Exponering av trägolv och lister i butik och på mässor : en jämförande studie mellan sport- och bygghandeln

The business cycle of the wood flooring branch is currently high however that situation may not be sustainable. In a possible future weaker business climate, the importance of marketing becomes accentuated for firms that aim to maintain their sales levels. We can see trends that competition among the Swedish and foreign manufactures is already stepping up. The intent of this study is to establish marketing guidelines for floor- and molding manufacturers, so they can establish a clearer brand image in DIY retail outlets. By comparing the approach of sports- and DIY stores to brand and product placement, this study aims to bring new knowledge to the DIY branch for improved consumer and product handling.

Kartering av markföroreningar inom Skutskärs Bruk samt utvärdering av spridningsrisker enligt Naturvårdsverkets MIFO fas 2

With the prospect of future construction on the Skutskär Pulp Mill property, Stora Enso Fine Paper has initiated an investigation of soil contaminants and a risk assessment of these contaminants. A soil and groundwater investigation has therefore been conducted on an open area of about 16 000 square meters, situated between the current wood room and digester house. To be able to integrate this study into an investigation for the whole industrial property, the study has been carried out as a phase 2 study according to the Swedish Environmental Protection Agency?s Methods of Inventories of Contaminated sites (MIFO).The site investigation has involved soil and groundwater sampling, together with the analysis of heavy metals and organic contaminants. The degree of hazard posed by the contaminants, the level of contamination, the potential for migration of the contaminants, as well as the degree to which protection of human health and the environment is required in the area, have been weighed together for an overall risk assessment of the area with regard to human health and the environment.The investigated area was built up by filling in the coastal waters.

Civilsamhällets mobilisering i demokratiseringsprocessen -en fallstudie av Sydafrika

This essay captures the process toward a democratic transition in South Africa and tempts on analyzing the efforts made by civil society before the negotiation with the government in the beginning of the 90´s. The method used is a case study.By applying the theory of Elisabeth Jean Wood about the importance of continued mobilization, I try to answer the question: to what extend did civil society influence the democratization process. The focus of the study lies on the years of intensified popular mobilization, from the start of the 80´s until the beginning of the 90´s.The results following this study shows that COSATU, Congress of South African Trade Unions) and ANC(African National Congress) played both a crucial role for the democratization process in South Africa. UDF, however played a role in the process, but not in the same significant way that COSATU and ANC..

Optimering av indunstningsprocess

The wastewater treatment plant at GE Healthcare's facility in Uppsala deployed a three step vacuum evaporator in 2007. The purpose of this was to pre-treat wastewater containing amines. The purpose of this thesis was to optimize thisprocess by reducing the amount of concentrate without releasing more nitrogen tothe environment and to examine if density could be used as a measurement of whenthe process should be ended.To create a foundation for optimization six test cycles were conducted with samples taken from all three steps. Both concentrate and condensate were tested as well as the incoming solution. Furthermore, the thesis has been expanded with a benchmarking part examining two different evaporators.

44 m2 extra - ett förslag på nytt fritidshus

My Finnish grandfather had a passion for architecture, eventhough he wasn?t an architect. In the end of the 1950s he builta wooden summerhouse on a lot outside of a small villagecalled Lempäälä, close to the city of Tampere. Today the lotbelongs to my mother. Every time I visit our summerhouse, itmakes me want to do as my grandfather did ? to build a smallhouse next to it.My project is a proposal for a wooden house on mymothers lot.

Datorbaserad analys av enzymdesign för Diels-Alder  reaktioner

This thesis has been focused around the Diels Alder reaction with the goal to design an enzyme catalyzed reaction pathway. To achieve this goal computer aided enzyme design was utilized. Common traditional methods of computational chemistry (B3LYP, MP2) do not do well when calculating reaction barriers or even reaction energies for the Diels Alder reaction. New calcu- lation methods were developed and tested. This was the focus of the first part of the thesis, by choosing a small system, extensive and heavy calculations could be done with CBS-QB3.

Massivträ : Jämförelse mellan olika principer för sammanfogning av trä till plattelement med avseende på pris, hållfasthet och ekologi

Ökad användning av byggtekniken massivträ kan ge ett positivt bidrag till hållbart byggande. Utvecklingen inom datornavigerad bearbetning ger massivträ möjligheten att rationalisera byggproduktionen inom trä. Tekniken ligger rätt i tiden och kommer att värderas allt högre då den tillvaratar materialets karaktäristiska egenskaper.Utvecklingen av massivträ har resulterat i teknikvarianter av hur virke kan sammanfogas till solida element. Ett behov har funnits av en marknadsjämförelse mellan befintliga principer där studien förtydligar grundläggande skillnader för intresserade byggaktörer. Problemfrågan för denna studie har varit: vilka principer för sammanfogning av trä till plattelement inom massivträ är mest fördelaktiga? Detta sett utifrån faktorerna produktionskostnad, hållfasthet och ekologiska övervägningar.För att förtydliga den undersökta byggmetodens nytta i ett vidare perspektiv har det presenterats en allmän beskrivning av massivträ.

Modellering av indunstning på Södra Cell Mönsterås

Evaporation is a part of the chemical recovery department at wood pulping mills. The purpose of evaporation is to remove water from the black liquor, which makes the liquor combustible. The process is very energy demanding, and having a well-functioning model of the system is of greatest interest. The model can then be used to study energy consumption and to test different control strategies. Two models have been developed during the master thesis.

Ett bostadshus i prefabricerad trästomme : Ett gestaltningsarbete anpassat efter volymelementsbyggande

Den här rapporten är en sammanställning av ett gestaltningsarbete där ett bostadshus i 5 våningar projekterats fram. Huset i fråga har anpassats till att kunna byggas med prefabricerade volymelement och enbart i stommaterialet trä. Prefabricerade volymelement är färdigbyggda rumsenheter, tillverkade på fabrik. Dessa kan vara så pass färdigställda att de levereras till en byggarbetsplats med färdig fasad och fast inredning. Eftersom arbetet baserats på volymelementsbyggande, har projektering skett efter de villkor och den byggteknik som då tillämpas.

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