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1924 Uppsatser om Land degradation - Sida 7 av 129
Kemin bakom framtidens avgasrening : En studie av ureasönderfall under kvävgasatmosfär
The purpose of this work was to provide a better understanding of urea?s decomposition and byproduct formation in an SCR system on heavy trucks. In my experimental setup with TGA-DSC-FTIR (a combination of two thermal analysis methods and a method for gas phase detection), an FTIR method for urea in the gas phase was developed for the qualitative and quantitative determination of urea and its decomposition products. Chemicals such as urea, biuret, cyanuric acid and melamine of p.a. quality were used in this method development. Beforehand, there was no FTIR method available to detect these substances; hence, the aim of this work was to develop an FTIR method to understand the degradation chain of urea. The combination of TGA and DSC was used for analysis of different samples, where urea, biuret, cyanuric acid and melamine in varying amounts have been weighted in for various experiments in order to study the temperature at which a phase transition or reaction occurs, i.e.
Vindkraft och rennäring
The Swedish Parliament has decided to increase the share of electricity produced by wind power. The same parliament has decided that the Sami have the right to herd reindeer over 50% of the country's land area. In this literature review the potential impact wind power development and associated infrastructure may have on reindeer husbandry conditions are examined.
The unique physiology of the reindeer enables it to live out of grazing in the arctic climate in the north of Sweden. For reindeer husbandry to be long-term productive and sustainable, it is important that there is enough land for grazing. The research available on how reindeer are disturbed by human activities such as roads, mines, hikers, etc., clearly indicates that the reindeer avoids areas close to such disturbance.
De bortglömda stenarna : om byars äldre gränsmarkeringar och rågångar i Ekeberga socken
This essay is about the hamlets´ older boundaries, i.e. boundary lines (?rågångar?) and boundary markers in the form of rocks, and an own survey of two hamlet boundaries in southeast Sweden. Many of the boundary rocks were subjected to unintentional damage or destruction that arose during forestry activities, the excavation of ditches, or road construction. Boundaries between hamlets sparsely populated areas were not clearly defined from the beginning, but were established initially in the form of boundary zones, that often consisted of wetlands, watercourses, or mountain heights.
När har juridiska personer beviljats förvärvstillstånd av lantbruksfastigheter?
The purpose of this report is to study when and why legal persons have been allowed to acquire agricultural properties.
The ownership of agricultural property is governed by the Land Acquisition Act. The reason for this is because they want to limit legal person owner-ship of agricultural properties. It is believed that a large proportion of pri-vate ownership is healthy and stimulating for the Swedish countryside.
There are some exceptions in which legal persons may be able to acquire. This is a review over decisions taken by the authorities. In this report I have studied purchases made between 2008 and 2010.
Jämförelse av effekter från gruppträning i bassäng med landträning hos patienter med knäartros : Utvärdering av effekter på smärta, funktion i det dagliga livet och fritid- och idrottsaktiviteter
AbstractAimThe aim of the pilot study was to compare short- and long-term effects from group exercise in water with land-based exercise on pain at rest and pain with movement, along with the effects on function in daily life and practice of sports and leisure activities in patients with knee osteoarthritis. The aims were: Is there a difference in short- and long-term effects on pain intensity at rest and pain with movement after exercise in water or land in patients with knee osteoarthritis? Is there a correlation between the degree of pain intensity at rest and with movement, respectively and long-term effects from the two different exercises on function in daily life and practice of sports and leisure? MethodThe study was a randomized intervention study without a control group. Twenty patients with radiographic knee osteoarthritis were under a total of eight weeks treated with either land- or water-based exercise lead by a physiotherapist. The patients rated pain intensity at rest and with movement on a numerical rating scale (NRS) before and after the first training session, before and after the eighth training session, before and after the fifteenth training session and before the last and sixteenth training session.
Militärteorins inflytande på doktriner : William S. Linds påverkan på svensk doktrin för markoperationer.
Influences from military theory are a part of the development of military doctrines. This thesis has, by using a method with three different dichotomies, traced and classified influences from William S Lind?s theories regarding manoeuvre warfare in the Swedish military doctrine, for land operations. The purpose has been to discuss the connection between military theory and how the Swedish doctrine for land operations (DMarkO) has been formulated. It has also been to show what this influence depends on and what consequences it will present.The examination has shown that William S.
Sjuksköterskans upplevelse av att arbeta i u-land- en intervjustudie
Syftet med denna studie var att beskriva sjuksköterskors upplevelser av att ha arbetat i u-land genom organisationen Läkare utan gränser. Studien genomfördes som en intervjustudie baserad på semistrukturerade frågor. Fyra sjuksköterskor som under de senaste två åren arbetat i u-land deltog i studien. Resultatet visade att viljan att rädda liv i kombination med spänning och äventyr motiverade sjuksköterskorna att arbeta. Innan uppdragen fick sjuksköterskorna gå en förberedande kurs genom Läkare utan gränser.
Flygplansavisningens miljöpåverkan vid svenska flygplatser
The aim of this thesis was to answer a number of questions about the environmental consequences of aircraft de-icing. A further aim was to suggest how the environmental consequences due to the release of de-icing fluids can be measured and reduced.The main impact of the aircraft de-icing on the environment is due to the large oxygen demand for the degradation of glycol based de-icing fluids which are released in the environment. The effect of the increase in oxygen demand depends on where the degradation occurs in the ecosystem. In a sensitive ecosystem, the large demand of oxygen could provide an anaerobic environment which would be harmful for many types of organisms.In order to reduce the negative effects of the applied de-icing fluid, there is some type of collection system at every regular airport in Sweden. The methods of collection can be divided into two general groups, hydrological isolation or vacuum sweeper trucks.
Markanvädnings och markvård på småskaliga farmer i Bungomadistriktet, Western Province, Kenya
In Northen Bungoma, Western province ? Kenya, the Vi-Agroforestry Project (VI-AFP) has introduced a new project that covers 7000 households. To succeed with the project, a water resources protection project, agroforestry methods will be implemented to secure the water quality of the area. In this thesis a foundation is laid for future follow-up studies of land cover and land use of this area. To carry out this study an existing method from a cooperation between VIAFP and Dalarnas University (HDa) has been implemented.
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..
"Danmarks fremtid dit land - dit valg..." - En analys av Dansk Folkepartis bok
I min uppsats har jag valt att undersöka Dansk Folkepartis bok Danmarks fremtid dit land - dit valg. Jag har främst gjort en retorisk analys av materialet utifrån Lennart Hellspongs bok Metoder för brukstextanalys. I kombination med den retoriska analysen har jag även valt att använda Teun van Dijks bok Elite discourse and racism för att få en breddare förståelse av materialet. Med hjälp av van Dijks bok och hans diskussion av olika retoriska strategier och diskurser försöker jag göra det lättare att förstå och se Dansk Folkepartis sätt att påverka. Jag för även en kortare diskussion av bilder och dikter som förekommer i boken..
En värld av ?i? och ?u? : -En studie av u-länder i geografiböcker för gymnasiet
I uppsatsen har två geografiböcker för gymnasiet studerats. Fokus för undersökningen har varit böckernas framställning av "de andra", i det här fallet representerat av periferin, u-länder eller tredje världen, beroende på vilket uttryck som väljs att användas. De två undersökta böckerna, Geo- guiden och Geografi- människan, resurserna, miljön, brukar främst begreppen u-land och i-land för att beskriva världens fattiga respektive rika länder. Även begreppet NIC-land förekommer i böckerna men inte i samma utsträckning. Geografi- människan, resurserna, miljön presenterar även begreppen centrum- periferi, vilka dock inte används i särskilt hög grad.
Miljökonsekvensbeskrivning för en utökning av befintlig djurhållning :
In the last few years the environment becomes more watchful, even for us farmers.
All agricultural enterprises that exceed 200 animal units must be tested according to
regulation of environment. A farm business with 200 animal units and more is classed
?environmentally hazardous activities? and has to make an environmental impact
assessment for the business you have today, and the activity after expansion.
Before you can construct a building and expand the numbers of animals is a lot of
applications to make. I have in this project restricted me to establish a environmental
impact assessment and a consultation foundation.
To make a environmental impact assessment is the big part of the application. The
environmental impact assessment take a lot of time and you need skills for all the rules
in the environmental code to be abele to make an environmental impact assessment
approved.
The environment codes purposes (1 kap 1 § Miljöbalken) is to rule the laws.
The purpose of the environment code is to promote sustainable development which will
assure a healthy and sound environment for present and future generations.
Definitions of a ?environmentally hazardous activities? 9 kap 1§ Miljöbalken) shall
mean the discharges of wastewater, solid matter or gas from land, buildings or structures
onto land or into water areas or ground water.
Marknaden för skogsvårdstjänster : en undersökning bland privata markägare inom en region i Värmland
This work broadly illuminates the conditions for increasing the commissions of forestry services within the whole, or parts of, the western regions of Stora Enso?s operating area. Through a questionnaire, a survey was made examining whether the owners of the forests themselves do the forestry on their woodlands. This foremost concerns the pre-commercial thinning, but also planting and soil scarification. The survey also shows who are buying the most part of their forestry services and who are carrying it out themselves.
Växelkursens betydelse för utrikeshandel : En jämförelse mellan ett EMU-land och Sverige
Uppsatsens syfte är att analysera den nominella växelkursens påverkan på utrikeshandel och göra en jämförande studie mellan ett EU-land (Sverige) och ett EMU-land (Tyskland). Fokus för denna undersökning kommer att ligga på vad som skedde med utrikeshandeln under de två ekonomiska kriserna på 2000-talet, men även ge en generell bild för utrikeshandeln under hela perioden 2000-2010. Uppsatsen avser att besvara om det finns några skillnader i hur ländernas handel påverkades under kriserna med avseende på växelkursen, samt om handelssammansättningen av handelspartners förändrats. Detta kommer undersökas för att se hur Sveriges utrikeshandel påverkats av att stå utanför EMU.Resultaten visar på att den nominella växelkursen inte haft stor betydelse för utrikeshandeln under den undersökta tidsperioden. Både export och import har ökat under perioden, men det går inte att finna någon direkt koppling till växelkursförändringar.