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1576 Uppsatser om Wood-living insects - Sida 19 av 106
Förväntningar på Framtida Mobila Tjänster
Today?s society is very focused around technology and something that is very popular is the usage of mobile devices such as Smartphones or Tablet computers. One of the reasons why these devices are so popular, is because of the large amounts of services or ?apps? that they can provide for the user. They can do a lot of things that makes everyday living easier for the users.The focus of this study is to find out what kinds of mobile services the users of these devices are expecting and/or wishes to see in the future and what is required to be able to develop and use these services in a good way.We started of the study by searching for earlier studies on the same or similar subjects.
Utdragshållfasthet av inlimmade skruvar i limträ
In this thesis tests has been performed on the pull strength of screws glued into glulam beams.The experiment is based on the already approved method whereby the diameter of the drilled holes is the same as the screw outer diameter of 1 mm or bigger. The screws strength class shall not be less than 4.6 (EN ISO 898-1:1999, 1999).The difference in the experiments that were performed where that the drilled diameter were 1 mm smaller than the outer diameter of the screw so that the screw thread was worked into the wood.In the tests the gluing where made on M8 glulam beams. The screws where drilled at and angel of 90°tangental to the fiber direction with a diameter of 7 mm. The gluing of the screws where made in three different depths and where later exposed to pulling forces. The results showed both pulling breaks and screw breaks when they reached their maximum capacity.
Effekt av karbonatisering med biogas på aska från trädbränslen
It is essential to reuse- and recycles residues to decrease the amount of deposit materials and reach sustainable energy use. Two ways to work towards this is to recycle wood ashes to the forest as nutrient compensation and extract biogas from combustion of biomass.The aim with this study was to decide whether wood ashes that been used for biogas upgrading with accelerated carbonation also can be used as a nutrient compensation in the woods according to recommendations from the Swedish Forest Agency (Skogsstyrelsen).The ashes that were used in this study came from Johan Andersson who works at JTI in Uppsala, who also treated the ashes with biogas. The ashes have, in both untreated and treated condition, been analyzed in this study according to contents of elements, leaching properties, hardening properties and contents of crystalline phases, to evaluate what impact carbonation with biogas has on the ashes.The accelerated carbonation led to hardening of the ash, and decreased amount of CaO- and increased amount of CaCO3. The CO2-uptake also entails a dilution of the elements, and the content of nutrients and trace elements decreases. However the results show an indication of an uptake of S from the biogas to the ash, since the dilution had a smaller impact on S than the rest of the elements.
Förekomst & kostnad av kapsprickor i stormaskadad skog
The aim for this study where to investigate the frequency of cutting cracks in saw timber harvested in the storm-damaged forests in regions where the storms Hilde and Ivar hit. The idea for this work came from one of the region?s biggest actors, SCA Skog and Jämtlands district. The purpose where to find out how big proportion of the saw timber that contains cutting cracks, their financial cost in lost wood value and also give advice and suggestions on how to work against the frequency of cutting cracks.
For the field-study some guidelines where used to make sure that the samples were taken under the same conditions, they were:
? The field-study must be performed under harvesting of storm-felled forest, which are horizontal/inclined trunks.
? The averaged sized tree will make it possible to harvest saw timber.
? The trunks can?t be root cut.
A methodology called in Swedish ?Trissmetoden? was used because it is the most frequent used methodology in earlier performed studies and the only one that can be used I field.
Under the field-study data were collected from 570 saw timber logs, 30 logs from each one of the tested harvesters.
Två nya trailerkoncept för transport av rundvirke hos Stora Enso : en analys av prestation och flexibilitet
The need for roundwood transport capacity vary throughout the year. The need during a period is influenced mainly by the volume transported the period, the number of days during which transport can be carried out, seasonal variations in road conditions and the weight of the roundwood, and the origin of the wood (private forest owners/ forest companies). The need for transport capacity generally increase during the winter and in spring, after thawing. Lack of logging trucks combined with a lack of drivers for these trucks make it hard to hire extra help during periods of increased transport capacity needs. It is also very expensive to keep logging trucks for use only during these periods.
In this thesis, two new concepts based on the partial transport by truck tractors have been examined, to find out the possibility for increased performance and flexibility.
Att drabbas av och leva med stroke : en studie av självbiografier
Stroke is a widespread disease in Sweden. Nurses play a central part for those who suffer from a stroke irrespective of where in the care chain they meet. To be able to meet the patients? need of care the nurse must understand his/her lifeworld. Each and every patient is unique and the experience of being struck by a stroke depends on personality and life situation.
Living the brand : En varumärkesbyggande företagskulturstrategi
Denna uppsats behandlar ledarskap och organisationsförändring. I rapporten undersöks hur fyra chefer har handskats med de svårigheter och utmaningar som uppstått då organisationen de verkar i ska driva igenom förändringsprojekt. De undersökta organisationerna är Försvarsmakten Visby garnison, Scania AB Falun, Apoteket AB och Nacka kommun. I de två förstnämnda består förändringsprocessen av mer eller mindre total avveckling och i de andra två rör det sig om omfattande förändringar i struktur eller arbetssätt. Undersökningen är baserad på djupintervjuer med dessa chefer och svaren har analyserats utifrån existerande modeller för förändring.
Fältmätningar av limträbalkars elasticitetsmoduler : utvärdering av tre mätmetoder
This study investigates three different methods for evaluating MOE,Modulus of Elasticity, in field measurements. The purpose is toinvestigate the possibility to use dynamic measurement methods infield measurements that hitherto (2010) has been performed with staticmethods. The objects of investigation are 20 glulam beams. The firstfield measurement took place in november 2007 and applied a staticmethod based on the standard SS-EN 408. The second measurement,described in this study, took place during summer 2010, and appliedstatic as well as dynamic methods.The MOE of wood is affected by a range different factors.
Praktisk Fysik : Laborationernas och demonstrationernas vara eller inte vara.
Several scenarios point toward a future where we are far more people on Earth than today, where most of those people will live in cities and where oil no longer dominates in the transport systems and in agriculture as an energy source and where less energy will be available to us. The report investigates what areas in traditional ecological knowledge that can contribute to the transition that follows a future with less energy and establishes three areas with the potential of becoming important: areaspecific biological knowledge in societies that are more dependent upon its surrounding environment and its natural prerequisitesthe local management of these biological resources, which often means a fair sharing and sustainable handling of the resources and which has been observed in Nobel price awarded Elinor Ostrom?s researchthe world views that lie behind how the environment is considered and managed, world views that can inspire and point toward how we in the future should formulate world views that do not give the destructive modern management of the environment It is also noted that the magnitude of the city living in the future is a historical news and that very little research has been done in how traditional knowledge can be transferred into this kind of living..
Att styra bilanvändning mot en hållbar utveckling. Om geografiska livsvillkor kontra offentliga ingrepps betydelse för bilanvändning.
Car usage is determined by several facts, e.g. living conditions determined by geographical matters. There is a political will to control car usage with different kinds of incentives since car usage generates environmental problems. This essay analyses the differences between car usage in urban areas as opposed to thinly populated areas in Sweden and their significance on governmental incentives. By using statistics differences in car ownership during ten years between thinly populated areas, areas in the countryside and urban areas is studied.
Hiv - En förstummande sjukdom? : socionomstudenters och socialsekreterares attityder till hiv-positiva
The aim of this study is to examine social workers' and social work students' attitudes towards people living with hiv in Sweden. I will also examine if there is a connection between knowledge and attitudes. The questions at issue are how social workers' and social work students' attitudes can assume to influence on their professional practice and what causes can affect their attitudes towards people living with hiv. The study is based on a qualitative method. The methods have been: conversational interviews with five social workers, who work with family issues and integration, and a focused group interview with four social work students.
Användande av diffusionsspärr vid tilläggsisolering av äldre byggnader med trästomme
In the current situation a big part ofthe settlements that exist in Sweden isin need of renovation and energyefficiency in order to survive.Therefore, also many of the older houseswith a wooden structure are in a need ofenergy efficiency, which can be done ina variety of ways, including addinginsulation.This project deals with whether the useof a diffusion barrier or a vaporbarrier affects a wall structure byadding insulation to an older house witha timber frame. The insulation materialswhich are concidered in thisinvestigation are mineral wool and woodfiber insulation. Efforts are focused onthe effects of moisture on theseinsulation materials.To demonstrate the differences thatarise the moisture measurement programWUFI have been used to simulate avariety of wall designs. These designsare developed in consultation with theconstruction carers who are active inthe industry.Using WUFI graphs illustrating themoisture levels of the wall structureswere obtained and from these conclusionsvould be drawn. The work demonstratesthe differences that arise when using adiffusion barrier or vapor barrier inwall construction.
24 hour living room : Konstruktion av en kombinationsmöbel
Detta examensarbete är genomfört i samarbete med produktutvecklingsavdelningen på IKEA i Älmhult.Ingvar Kamprad startade IKEA år 1943 som en postorderfirma. Idag är företaget ett av världens största möbelföretag med 253 varuhus i 35 länder och med en omsättning på 161 miljarder kronor.Compact living är ett område på frammarsch inom inredningsvärlden. IKEA strävar efter att kunna erbjuda marknadskraftig heminredning inom alla områden. 24 hour Living room och dess delprojekt är en utgångspunkt för framtida idéer inom området.24 hour Livingroom är ett projekt där en urban lägenhet på cirka 40m2 skall möbleras för ett compact living. Nyframtagna möbler och prototyper skall förenkla vardagen för en familj på två vuxna och två barn.
Att leva i två världar : En studie om professionella inom socialt arbete och deras syn på barn i åldern 0-3 som lever i ett växelvis boende.
The purpose of the study, "Living in Two Worlds" is to try to find out how the professionals in social work reasoning and thinking about children 0-3 years living alternate residence and how children 0-3 years are affected by form of housing . Questions are how they professional reasons and think about the type of housing, what advantages and disadvantages they consider are and the conditions under the professional must be satisfied that the child will not get hurt. Study is a qualitative study using semi-structured interviews. The theory that the study is based on the attachment theory explaining the relational processes that occurs between the child and its care person. The results of this study show that if the parents are in great conflict with each other is important for the child cope with the alternating form of housing well or not.
Hållbart byggande, Gröna Skrapan och Bright Living - Två klimatsmarta initiativ som gör skillnad
Bygg- och fastighetssektorn utgör en stor del av samhällets miljöpåverkan och står idag för 40% av den totala energiförbrukningen i Sverige. Denna energiförbrukning måste minska i och med att energin i Sverige till stor del kommer från fossila bränslen, vilket bidrar till den globala uppvärmningen. I och med detta står bygg- och fastighetssektorn inför stora utmaningar inom en snar framtid. För att komma till rätta med problemet har bygg- och fastighetssektorn tagit steget mot en hållbar utveckling genom införandet av konceptet hållbart byggande.Syftet med denna studie är att undersöka vilka incitament som kan få företag inom bygg- och fastighetssektorn att investera i referensprojekt inom konceptet hållbart byggande. För att uppnå detta utgår studien ifrån två referensprojekt; Skanskas kontorsfastighet Gröna Skrapan och A-hus nya husserie Bright Living.