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959 Uppsatser om Forest contractor - Sida 55 av 64

Utförande och upphandling av brounderhåll : En studie av Stockholms stads broar

Trafikkontoret i Stockholm har en viktig uppgift i att förvalta de drygt 800 brokonstruktioner som är en vital del av stadens infrastruktur. En utmaning inför framtiden blir att tackla det ökade underhållsbehovet som en följd av ett åldrande brobestånd och ökad trafikbelastning. Trafikkontoret är en av de förvaltningar som ingår i Stockholms stad, som till stor del är en beställarorganisation. Idag sköts fortfarande det förebyggande underhållet av broar i egen regi men på grund av omorganiseringar kommer underhållet i framtiden att handlas upp.Syftet med examensarbetet har varit att ta fram ett underlag för upphandling och kunskapsåterföring i form av objektskartor, uppföljningsprotokoll och egenskapskrav med utgångspunkten att förbättra det förebyggande underhållet. Informationen som ligger till grund för rapporten har inhämtats från en litteraturstudie, intervjuer med sakkunniga inom branschen, data från förvaltningssystemet BaTMan och en inventering av Stockholms stads broar.

Ett gammalt kulturlandskap i Vindelfjällen : skogshistoria och markutnyttjande i Vuornavagge under 300 år

Humans have inhabited mountainous areas in northern Sweden since the end of the last glacial period, ca 8000 B.P., and their presence has marked the landscape in various ways. Older traces include the remains of hearths and dwelling sites, but there are also remains, such as culturally modified trees (CMT's), resulting from more recent activities in forested areas. This study aimed to document how people, both indigenous Sami's and Swedish settlers, have used an area northwest of Ammarnäs in Västerbotten, during the last 300 years, and what traces their activities have left in the area. I used historical records as well as an inventory of CMT's in the area to address this aim. Historical records of Sami activity are meagre, but it is clear that the people of the Ran and Gran Sami villages utilized the area long before 1500 A.D.

5 minuter till Luleå : en visuell studie av en stadsinfart

SUMMARYThe demands on the public environment are big and in particular on the environment of communication which we spend a lot of time in on our way to work, school etc. The city-approach is a road section that leads from the periphery of the city to the centre of the city, often through boring and meaningless industrial areas that displays the back side of the city to the voyager on the city-approach. The intentions of this thesis in landscape architecture has been to study one of the two city-approaches to the city of Luleå, the close surroundings and contextual position in the city and not at least give suggestions of ways how the city-approach can be changed, clarified and improved. The study of the city-approach has been made by studying literature that concern city-approaches and the architecture of roads in general. Studies of different analysis methods has been made to find appropriate approaches to work with the specific study of the city-approach to Luleå.

Modellering av Åkkomforten i en Skotare

Sammanfattning Denna avhandling avser en Skotare ? Valmet 860,4 ? från Komatsu Forest, som har hög produktivitet, men saknar såväl primärt fjädringssystem för fram- och bakaxel som hyttfjädringssystem för att isolera mot vibrationer från ojämnt underlag. Tidigare projekt har praktiskt mätt upp accelerationer (vibrationer) i förarstol, hytt, framvagn och bakvagn, liksom fyra boggievinklar. I detta examensarbete har en simuleringsmodell av skotaren utvecklats i SimMechanics baserat på vissa antaganden och förenklingar, och utvärderats gentemot tidigare mätdata. Gjorda simuleringar matchas mot mätdata i både tids- och frekvensdomänen för att demonstrera att simuleringsmodellen reflekterar huvuddragen i den verkliga skotaren.

Identifiering av fel i skogliga beståndsregister med hjälp av satellitdata :

This thesis has focused on the possibility to use a satellite image method developed by Metria Mijöanalys to identify stands that are wrongly registered in Holmen Skogs database. The method is only intended for identifying stand with poor descriptions in Holmen?s database that needs to be updated and not for updating the stand information. The study area is located several km west of Hudiksvall on the borderline between Gävleborgs- och Västernorrlands län. The area is covered by a SPOT image from 2005. By which Metria Miljöanalys has made estimates of forest parameters for all stands in the area, and compared them with corresponding estimates according to the stand database.

Spatt relaterad till tarsalledens vinkel

The effectiveness of Phlebiopsis gigantea to prevent spore infections from Heterobasidionannosum and Heterobasidion parviporum on hybrid larch stumps were investigated in fivestands in southern Sweden. All sites are former forest land and the age of the trees wasbetween 9 and 13 years.The study was implemented in August 2010, a month where spore dispersal should be great.The five sites were located in previously un?thinned monocultures of hybrid larch. The sporeload in the air was studied with the help of spore traps from three different tree species;Norway spruce, Scots pine and hybrid larch. A total of 146 spore traps, evenly distributed inall five sites were analyzed.

137Cesium i myrsamhällen i Gävleborgs län 24 årefter Tjernobylolyckan

24 years have passed since the Chernobyl accident when radionuclides were spread over largeareas of Europe, including the Scandinavian countries. Today, measurable activities of 137Csare still observed in many Swedish ecosystems.Ants (belonging to the order Hymenoptera) are social insects which collect organic materialfrom a large area around their nests. This study focuses on the 137Cs activity in ant nests andthe cesium accumulation in these nests. The aims were (1) to estimate the 137Cs fall-out in1986, (2) estimate the radiation exposure of ants and (3) find how 137Cs is distributed in an anthill. Seven ant hills (occupied by the species Formica polyctena) were studied near the villageof Hille, situated north of the city of Gävle in central Sweden.

The impact of the EU Timber Regulation on the Bosnia and Herzegovinian export of processed wood

Illegal logging and its related trade is of great concern around the world. The European Union Timber Regulation (EUTR) is a regulatory approach by the EU to prevent illegal timber and timber products to be placed on the European Union inner market. This means the regulation affects both actors in the member countries as well as the actors exporting timber and timber products to the EU from non EU member countries. This study aims to study the implementation process of the EUTR in Bosnia and Herzegovina (B-H), and its preconditions. Institutional theory is used to understand and explain how the EUTR affects B-H organisations? business environment, and how the organisations choose to respond to the EUTR.

Körskador i gallring : en studie av 21 drabbade objekt i södra Sverige

To guarantee the customers a job satisfactory executed Sydved has been certified by the ISO 14001 standard. One part of the certification is the standards of soil damages. The soil damages were over represented during 1999 and 2000. It was therefore a need to study the problem in order to see what could be done to reduces these damages. A filed study was carried out on 21 subjectively selected stands from the following five districts: Vänersborg, Falköping, Borås, Jönköping and Åseda. As the study is a descriptive study of the soil damages, their character and extension, only stands were tracks were reported were considered.

Fermentation of lignocellulosic material by the alternative industrial ethanol yeast Dekkera bruxellensis

Bioethanol is one alternative energy fuel that can be produced from different types of biomass. Second generation bioethanol comes from fermentation of lignocellulosic material and can be seen as a more environmental friendly alternative as e.g. forest residues and agricultural by-products are used. To be able to use lignocellulosic biomass in ethanol production, it has to be subjected to different treatments first. In this study, aspen sawdust was used as lignocellulosic material.

Förskolebarns tankar om vattnets kretslopp i naturen och i samhället. : skiljer sig pojkars och flickors svar åt?

AbstractThe work will give the picture of what four- and five-year-olds know about the water cycle in nature and in the society. Is there any difference depending on whether a boy or a girl is answering? The work will as well try to describe a picture of how a pre-school could plan their work on a sustainable society, science, and increased gender equality. To answer these questions the information has been received from interviews with children and by studying pre-school?s local plan.    Earlier research on the area of water shows that it is important before working with a new topic to find out what knowledge the children already have, so that the process could be as worthwhile as possible.

Kvalitet och ekonomi i utförandet av förstagallring baserat på olika gallrings- och underväxtröjningsprogram :

Stora Enso Skog has a long term contract regarding felling rights and silvicultural activities on forest owned by Bergvik Skog. In the autumn 2006, Bergvik Skog proposed a new thinning program, ?Bergvikgallring?. The new program implied an increased focus on extraction of smaller trees compared to the present thinning program, Stora Enso Skog?s ?Kvalitetsgallring?.

Hur kredithandläggare lantbruk i sina kreditgivningsstrategier beaktar den potentiella riskfaktorn att säkerheten i form av åkermark faller i värde

The increase in farmland value in Swedens plain areas is a well known fact in today's Swedish agricultural. In connection with the fluctuating prices of crops and inputs, are increasing the risk exposure to agriculture. The increased value of agricultural land has in Sweden over the years been due to a high demand for land that has existed and exists in Sweden. The increasing demand is linked to a structural rationalization of Swedish agriculture, leading to fewer and larger farm units (www, privataaffärer, Carl Johan Jurss).The purpose of this study is to examine the potential risks associated with the farmland value falls or remains unchanged, according to a farm credit administrator's perspective. The idea is to get a picture of the main factors taken into account when lending and the problems with falling or stable land prices into account when lending.

Planteringsförbandets betydelse för kvalitetsegenskaper i Contortatall (Pinus contorta var. latifolia)

In Sweden, large scale planting of Lodgepole pine (Pinus contorta var. latifolia) started in the beginning of the 1970?s. At first, the aim was production of pulpwood, but later, also production of timber became considered realistic. Today, Sweden has more than 520 000 ha of Lodgepole pine.

Klädesfabriken : Textilförläggaren Anders Hansson på Mölneby i Östra Frölunda en protoindustrialist i 1800-talets Sjuhäradsbygden?

The purpose of this paper is to survey the textile based proto-industrialism in Sweden in the middle of the 19th century. This case study is founded upon Anders Hansson?s pre-industrial textile production at the estate of Mölneby, Östra Frölunda in the rural district of Kind in the province of Västra Götaland.Account books from the year 1853 related to Anders Hansson?s wool fabric manufacturing have been looked into and categorized using a quantitative research method. The research has also been supplemented with a number of interviews.The result of the survey shows that Anders Hansson?s business activities fit into Mendel?s theory of proto-industrialists at a practice level.By collaborating with a merchant in Gothenburg the fabrics were traded in unknown markets, as well as in more familiar neighbouring districts.

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