Sök:

Sökresultat:

1344 Uppsatser om Wood supply - Sida 15 av 90

Hur påverkar naturvårdsåtgärder mängden av vedlevande insekter : Manuellt dödade träd vs självdöda

Today?s forest managers implement a large number of methods to increase the amount of dead wood in Swedish forests. They use everything from high cutting of trees to girdling trees and burning forests. However, implementation of these measures without proper knowledge of their consequences is a common problem. This study has been performed to increase knowledge about two of these measures, girdling and high cutting, and how these actions affect the number of wood-living insects living on dead trees.

Naturreservat : en bra naturvårdsåtgärd för att bevara enskilda arter och/eller bevara den biologiska mångfalden?

The examination of the adequate nature conservation methods in a natural reserve, to conserve a specific species and / or increase biological diversity is the subject of this study. This work is based on four species, that can be found during the Spring season, liverleaf, wood anemone, brimstone and woodpecker. The incidence and availability is studied and closely observed for these species in twenty forests, i.e. ten forests which are nature reserves and ten forests with the similar characteristics as the nature reserves habitat, but are not nature reserves in Gnesta mucipality, Södermanland. Measurements of the tree crown and the diameter of the tree trunks where noted to study how these factors could affect the outcome of the abundance and incidence of the four species.

Bristen på arrendemark som hinder för expansion av lantbruksföretag : arrendelagstiftningens och gårdsstödets påverkan på den svenska arrendemarknaden

Improved profitability, a reasonable yearly income or the possibility to have employees are all incentives for expansion. A prerequisite for farm businesses to expand is for land to be made available, either to buy or to rent. In Sweden, 43 % of the total arable land is leasehold land, which implies that a functioning leasehold market is of great importance for the Swedish agriculture. Several factors can affect the supply of leasehold land, for instance the leasehold legislation and the Single Payment Scheme. The fact that the leasehold legislation is compulsory, in protection of the leaseholder, might keep land owners from leasing their land out.

Metodutveckling för analys av klorfenoler i jord samt analys av förorenad jord från ett sågverk

In this final thesis, an existing method for analysis of chlorophenols (CP) in bottom sediments has been updated and adjusted for analysis of chlorophenols in soil. The covalent bonds between the chlorophenols and the soil matrix were broken through basic hydrolysis and the chlorophenols were then separated from the water phase through addition of sulphuric acid followed by ether extraction. The chromatography was improved through extractive acetylation of the chlorophenols.The updated method was then applied on soil samples from a contaminated area (a former sawmill in Hyttsjö, Östergötland, Sweden).The analyse was preformed by GC/MS with respect to 2-MonoCP, 4-MonoCP, 2,4-DiCP, 2,6-DiCP, 2,4,6-TriCP, 2,3,4,6-TetraCP and pentachlorophenol (PCP).Contamination of chlorophenols in nature can be explained by the former use of wood preservative chemicals based on chlorophenols. In the 1960s and the 1970s these chemicals were used in Sweden, but due to their toxicity they were banned by the Swedish government in 1978.In Hyttsjö a pentachlorophenol-based product named Santobrite was used for several years. The concentration of PCP in the soil samples from Hyttsjö varied from 0.2->1.8 ng/mg dry substance.

FRISTADS ? Supply Chains, från tråd till arbetsbyxa

The Swedish Textile industry has since the beginning of the 70-ties moved their production to countries with cheap labour further and further away. The production in the Baltic countries and Asia has become reality for many Swedish manufacturing companies. With today?s technology the communication with remote countries has ceased to be a problem. The difficulties have instead turned out to be more focused on transportation of goods and just in time deliveries to Sweden.

Behov av ökad integration inom Supply Chain : Bakomliggande orsaker till att medelstora företag implementerar EDI

I dagens allt mer komplexa företagsklimat har vikten av en integrerad Supply Chain blivit allt viktigare vilket bidragit till ökat behov av integrationen inom och mellan företag. För ökad integration inom Supply Chain kan automatiserad informationsdelning användas och ett vanligt förekommande informationsdelningssystem är Electronic Data Interchange (EDI) som integrerar två företagspartners affärssystem med varandra. Den automatiska informationsdelningen bidrar bland annat till reducerad manuell administrering, minskade transaktionskostnader och mer korrekt informationsdelning mellan företag. Medelstora företag har en avgörande och viktig funktion inom dagens ekonomi, inte minst på grund av de arbetstillfällen medelstora företag genererar utan även deras betydelse för företagsutvecklingen inom Sverige. Vi har funnit medelstora företag intressanta att undersöka på grund av deras betydelse inom samhället och har i denna studie undersökt på vilka grunder svenska medelstora tillverkningsföretag inom B2B väljer att implementera EDI för ökad integration inom Supply Chain.

Energikartläggning av Försäkringskassans lokaler : rekommendationer för ett fortsatt energieffektiviseringsarbete

With new energy directives in place, the Swedish Social Service (SSS) stands beforethe challenge how to reduce the energy demand in its locales. It is a complex matter,as the locales are rented from various property owners and it becomes a question ofhow to reduce the operational electricity and influence the property owners to workmore with energy efficiency. This thesis takes a balanced research approach in threeparts. Firstly a qualitative part in form of interviews with personnel at the SSS and itsproperty owners, secondly a quantitative part of descriptive nature in form of energystatistics and thirdly a literature review of Energy Management (EM) Supply ChainManagement(SCM), Green Supply Chain Management(GSCM) and EnviromentalPerformance Indicators (EPI). This in order to be able to give normativerecommendations of how the SSS should act to reduce its energy consumption in itslocales and provide new insights on how EM, SCM, GSCM and EPI can be applied ineffect.

Automatisering av spraytorkningsprocess

ABB Surge Arrestors in Ludvika have for a long time had a problem to keep the moisture at a steady state in the production of their ZnO-powder, that is used to produce varistors.Some black-box models of the spray drying process have been designed and evaluated to find a solution for the problem. After evaluating the collected data it has been found that variations in the supply voltage causes control difficulties for the operator. A cascade control system was designed, consisting of three PI control loops designed with lambda tuning. The disturbance in the supply voltagewas used as a feed forward in the control system.At the end of the project the control system was installed, and tests were made to verify the functionality of the regulator. It was shown that most of the variations in the moisture of the powder could be eliminated using small resources, through purchase of a process controller and four power meters.

Långsiktiga inköp och leverantörsförhållanden - En studie av svenska tillverkningsföretags inställning till leverantörer och leverantörsbedömning

This thesis aims on adding another piece to the puzzle that is the supplier relationship research. Taking its base in a series of articles regarding the transformations of global supply chains into more long-term profitable ones. Two research questions are presented, one regarding long-term supplier relationships and one regarding the main criteria?s while evaluating new suppliers. With an emphasis on the long-term relationship and profitability are five medium sized Swedish manu-facturers examined through semi-structured interviews.

Tillfällig partiell isolering av limfärgsbemålat trä vid behandling med fuktbaserade metoder - en jämförande studie av cyklododekan och mentol

Uppsats för avläggande av filosofie kandidatexamen iKulturvård, Konservatorsprogrammet15 hpInstitutionen för kulturvårdGöteborgs universitet2013:12.

Alternativa drivmedel : Vilket alternativt drivmedel uppfyller bäst Försvarsmaktens behov?

This essay is written within my education for Technical Officer in the Swedish armed forces. The essay describes the alternative fuels that the Swedish armed forces can make use of if the supply of fossil fuels is insecure. The alternative fuels that are described and compared are; Synthetic diesel, Organic diesel, Methanol and Ethanol. The essay describes the process of producing the alternatives, the need for modification and the economics for each alternative. The alternatives are compared and assessed for their ability to secure the supply of fuel to the Swedish Armed Forces.

Skötselförslag på utvalda nyckelbiotoper i Kalmar och Kronobergs län.

The objective of this study was to contribute with suggestions of nature preservation managements of selected forest objects of high nature values managed by the Swedish state-owned forest company Sveaskog. Many forests with high natural potential are relatively rare today due to modern forestry, where wood production is the main purpose. Sveaskog?s policy is to consider and to priority nature conservation on valuable objects. This assessment includes objects that in the future may develop into nature reserves.

Systemlösningar för plus- eller passivhus : En studie med syftet att lösa energibehovet för ett specifikt hus.

The purpose of the house which is the basis of this report is to be able present itself on the market as a relatively cheap and at the same time a climate friendly choice. The house is supposed to be able to be built anywhere in Sweden and the rest of Scandinavia in a short period of time. This puts demand on what kind of heating system the house can have, since not all places have the geographic advantage of being able to use geothermal or district heating. Therefore the heating system choices will only include those that are not limited by their geographic location. The house will be built in modules which only require the groundwork to be done before the house can be erected. In this report "System solutions for plus or passive-housing" a comprehensive literature search has been conducted as well as a number of calculations.

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.

Supply & value chain analysis of onions in Ethiopia

Ethiopia is a developing country situated on Africa?s horn. Ethiopia ranks 173rd on United Nations human development index where the least developed country ranks 186. About 85% of all Ethiopians are employed in agriculture. Onion is one of the basic ingredients in the Ethiopian cuisine and thus an important crop.

<- Föregående sida 15 Nästa sida ->