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4182 Uppsatser om International forest issues - Sida 29 av 279
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.
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.
Indelning av trakter inför gallring på Holmen Skog : en utvärdering av svårigheter och möjligheter
A common goal in practical forest management is to maximize the yield, measured in economical terms. When a forest stand is thinned a so called inoptimality loss can arise due to non-optimal decisions. This means that the selected management schedule results in a lower net present value than the optimal one which lowers the profitability for the forest owner. Holmen Skog uses the term tract which means an aggregation of stands made before a management action. A tract should be delineated in different tract parts in connection with pre-thinning planning if there is different bearing capacity within the tract, different thinning grades should be used or if the tract contains a weaker part that should not be thinned.
Trädslagsinverkan på markvegetationens utveckling i odlingsförsök med tall och contorta :
In the 1970?s it was predicted that in the beginning of the 21st century there would be a timber shortage in Sweden and a large scale introduction of the exotic tree species lodgepole pine started. An introduction of a foreign tree species means a risk of a negative influence on the forests ecosystem. Today, the stands that were established in the 70?s are middle-aged and the effect on the forest floor vegetation can be studied.
COIN vs DynCorp International : Hur har nyttjandet av DynCorp International påverkat Operation Enduring Freedom ? Afghanistan genom sin medverkan i utbildningen av Afghan National Police?
2001 störtades ett antal flygplan in i World Trade Center och Pentagon i USA, detta genomfördes av organisationen al-Qaeda med Usama Bin Laden som ledare. Påföljden av detta blev att USA inledde sitt krig mot terrorismen. Skådeplatsen för detta blev Afghanistan som sedan tidigare har varit krigshärjat av Sovjet på 80-talet. 2003 vann DynCorp sitt första kontrakt kopplat till Afghan NationalPolice, detta innebar att de ansvarade för att utbilda poliser som skulle arbeta på lägre nivåer. Då Tyskland ansvarade för utbildning av poliser på nivåerna commissioned och non-commissioned.
Sharia eller västerländsk jämställdhet? : Kvinnor i egyptisk lagstiftning
Sharia or western equality?womenin Egyptian legislationThe Islamic law (Sharia) in most of the countries in Middle East and North Africa has been the basis for modern laws which regulate issues such as marriage, divorce and inheritance. These laws (personal status law or family law) have been debated frequently in the last decades.There are those who consider personal status law (PSL) as unjust, male-biased and discriminating against women especially in the issue of divorce. On the other hand there are voices who call to go back to the Sharia, because muslims has to follow the islamic law and its values, they are universal as they claim. In this essay I try to enlighten these two points of view which can be found in the debate in Egypt.
Varumärkeshantering vid företagsförvärv i designbranschen
Background: The design industry is relatively immature in Sweden but large on the international market, where companies have used services from industrial design firms for a long time. Companies incresignly realise that design is an efficient mean to gain competitive advantages on the market. Several design companies fancy growth and to receive a wider market share to expand on the international market. One of them is Design Communicaton who has made a couple of acquisitions, to receive wider comptences and to cover different segments. That has lead to an increased brand portfolio with different subbrands, which can be complicated to handle efficiently in the internal and external communication.
Culture's Affect on the Determinants of Customer Satisfaction in Retailing: The Case of a European Retailer in China and the U.S.
Title: Culture?s Affect on the Determinants of Customer Satisfaction in Retailing: The Case of a European Retailer in the U.S. and China Date of the Seminar: 29th of May 2007 Course: BUS 809 Master thesis in International Marketing Authors: Lisa Bustamante Chesley Norman Charlotte Valind Advisors: Johan Anselmsson Cecilia Cassinger Keywords: International Retailing, Determinants of Customer Satisfaction, Culture, United States, China Thesis purpose: Our study aims to identify the determinants of customer satisfaction of two national cultures in a global retail setting, in order to clarify what role culture has, if any, in customers? satisfaction with an international retailer. Further, this will uncover if a Western perspective of determinants of satisfaction is a universal means of capturing what satisfies customers across cultures in a retail setting.
Viltets inverkan på vegetationsutvecklingen i en Sydsvensk skogsföryngring :
Herbivore impact on the Swedish forest has under a long time been a common subject of
debate. There are many different opinions depending on what direction the forest owner has with his/her forest. Populations of moose and roe deer have increased significantly in Sweden during the last decades. The purpose of this study is to get a full picture of the herbivore impact on the regeneration areas. The field work was done once a year for seven years (1999?2005).
Nyemission. Var det värt det? : En studie om nyemissioners effekter på idrottsaktiebolag
This essay has examined the effects that new issues had on the four Swedish football clubs that are organized as sport limited companies. The difference between a limited company and a sporting limited company is that the clubs always have majority ownership by the 51% rule. Previous research on sport limited companies and on new issues has been associated with the agent theory and the pecking order theory in order to explain the effects.The thesis is a qualitative study with an inductive approach, where the interviews have been selected as the method of collecting data. Through the years the clubs have performed new issues several times. The study says that the clubs perform a new issue for two reasons, either for investment purposes or because they have a poor economy and must collect liquid assets.
VEM ST?DJER BIST?NDET? En kvantitativ studie om vilka faktorer som p?verkar attityden gentemot EU:s internationella bist?nd
The discussion regarding international aid tends to be highly debated for long periods of time.
Some individuals are very positive towards aid and some individuals are less positive towards
aid. This study aims to broaden the understanding of the aspects behind that. The previous
research tends to focus on aid allocation within the EU, or which macro factors could influence
which donor countries give to which recipient countries. This study aims to add to the research
with which aspects at the individual level can influence the individual's attitude towards
international aid from the EU.
Kaliumgödsling på torvmark - effekt på tillväxten hos planterade granar (Picea abies)
Peat lands are a great potential resource for increased forest growth in Sweden, there are approximately 6.5 million hectares of peat lands, whereof around 70% produce less wood than one m3sk/ha and year and are therefore classed as forest waste land. There are over 200 000 hectares of peat land that is already drained and wooded, and that may be suitable for fertilization. Forest production on peat soils usually requires drainage and fertilization. Dewatering requires ditching the area, so that the roots can have access to oxygen. Nitrogen is often abundant in the peat but other nutrients; especially potassium is in short supply. The purpose of this work was to examine the effects of potassium fertilization on the growth of spruces that were planted on drained peat land and how different amount of fertilizers affects the growth. Potassium deficiency is strongly growth inhibiting, since potassium is important for substance transport in the tree. Potassium is also important for the carbohydrate formation, and because increasing the sugar content of the cells constitutes a lower freezing temperature does potassium availability in the soil play a major role in the winter resistance of many species. Potassium is not found in any organic compounds in the tree, but is present in cell and tissue fluids. A fertilization trial was started in 1978 in Siljansfors Experimental Forest. The plots in the experiment were fertilized with different amounts of potassium and one plot was left without fertilization. All plots that were fertilized with potassium grew considerably better than the unfertilized plot. The difference in production between the unfertilized plot and the plot that received the most potassium was 7.2 m3sk/ha and year. The unfertilized plot can still be classified as waste land. The theoretical production capacity was estimated using a Swedish system for site quality estimation of wetlands after ditching (dikningsbonitering). The plot with most potassium produced after fertilizationaproximately in level with theoretical estimations. Key words: Peat land, Fertilization, Ditching, Growth, site quality..
Har antalet naturvärdesträd i Sverige förändrats mellan 1999-2009?
Forestry and forest products are vital components of the Swedish economy but the forest is also important for recreation, hunting, out-door life and conserving biodiversity. The Swedish Forest Act has two equally important objectives, production and environmental protection. Polytax is the Swedish Forest Agency´s inventory programme which monitors progress toward the two objectives in connection with regeneration fellings. It includes data on environmental protection measures taken in connection with regeneration fellings. 30 § of the Swedish Forestry Act and related regulations specify the demands for conserva-tion of nature.
Slam ? en outnyttjad resurs i skogsbruket
Every year about 210 000 tones dry weight of sewage sludge is produced in Sweden. Most of the sludge is applied to agricultural land, plantsoil and landfill cover. Sewage sludge contains essential nutrients such as nitrogen and phosphorus. Nitrogen is limiting growth on solid ground in Sweden and can therefore be used as fertilizer to increase productivity. In order that the sludge can be spread to forest land it requires first a conversion of sludge to pellets, to make it more manageable.
Metod för användning av Geografiska Informations System vid långsiktig vägplanering : en studie genomförd på Sveaskogs marker i Norrbotten
The forest industry is one of the most important industry branches in Sweden. Since the demand of high precision wood deliveries has increased, the demand on a well constructed forest road net also has increased. A good road net gives the wood-supplier competition advantages and also increases its service level towards its customers, lumber-mills and pulp-mills. In some parts of Norrbotten, the road net is still insufficient and not yet built out enough, and that is why it is important to know how to act and where to improve the road net in these areas.
The purpose of this thesis was to create a work-model for long term road planning in areas with no road net or a not yet complete road net. The model has been created in an ArcGis environment, where a long chain of tools has been tied together with the program ?Model builder?.