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367 Uppsatser om Wind erosion - Sida 16 av 25
Erosionsskydd på vattenkraftdammars uppströmsslänter
Syftet med detta examensarbete är att belysa de otydligheter i förfrågningsunderlag och bygghandlingar som Skanska har stött på i samband med kalkylering/utförande av dammrenoveringsprojekt i Norrland. De aktuella projekten är inom ramen för det dammsäkerhetshöjande åtgärdsprogram som Vattenfall driver mellan 2002 och 2007. Otydligheterna har mest kretsat kring den bristande beskrivning av hur erosionsskydden på kraftverkdammarnas uppströmsslänter ska utföras. Eftersom otydligheterna hitintills lösts på plats har Skanska även velat öka sina kunskaper om hur erosionsskydd kan utföras. Bakgrunden till Vattenfalls dammsäkerhetshöjande åtgärder grundar sig i flödeskommitténs riktlinjer för dimensionerande flöden och deras beslut att tillämpa RIDAS, vilket leder till att en del av deras anläggningar inte uppfyller de nya föreskrifterna.
Utsläpp av växthusgaser under islossning i små boreala sjöar
Freshwater ecosystems have long been neglected as an important part of the global carbon cycle. However, research shows that most of the world?s lakes are net-heterotrophic and consequently emitters of greenhouse gases to the atmosphere. In many boreal and north-temperate lakes, most of the yearly emissions usually occur in spring, shortly after ice-thaw. The aim of this study was to quantify the flux of carbon dioxide (CO2) and methane (CH4) in three boreal lakes, during this annual event.
Under Terra Novas Stenar : en osteologisk- & arkeologisk analys av ett bronsåldersröse på Gotland
This paper discusses an osteological- and archeological analysis of a cairn from the Bronze Age on Gotland. The osteological material consists of both burnt and and unburnt bones from both human and animal. The objective of this paper is to shed light on the individuals who were buried in the cairn. It is also to generate information about continuity in its use and patterns of distribution of the bones and grave-goods in the cairn. The osteological analysis show that a minimum of five human individuals is present in the osteological material.
Hållning av unga svenska islandshästar och dess påverkan på beteende hos tvååringar :
Icelandic horses are becomming increasingly common in Sweden. The owners of
Icelandic horses in Sweden usually believe their horses to be different from other
breeds. Icelandic horses are predominantly considered to be less reactive, less
neophobic and easier to handle than other breeds. Swedish owners of Icelandic
horses also usually try to house and handle their horses in a way similar to the
traditional extensive Icelandic way. There are no scientific studies of breed
differences between Icelandic horses and other breeds, or of the housing of
Swedish Icelandic horses.
Samverkan mellan ljud och grafik : Användandet av inre bilder i spelhändelser
I detta examensarbete diskuteras ljudets funktion kopplade till korta händelser i spelet Europa Universalis III: Divine Wind (2011). Arbetet undersöker vad spelaren upplever när det uppkommer fler ljud än vad som är synligt i grafiken. Tidigare forskare vars arbete har använts är bland annat Mats Liljedahl, Nigel Papworth och Stefan Lindberg (2007) som forskat i hur spelare kan navigera efter ljud. Michel Chions (1994) forskning är också relevant då han beskriver hur ljud fungerar utanför bilden i film. Examensarbetet tar upp frågan om vad den inre bilden kan förmedla i en spelhändelse och hur spelaren tolkar situationen.
Urban vindkraft i Malmö
Sverige är ett föregångsland när det gäller miljöarbetet men har inte tillhört de ledande länderna på vindkraftsområdet. Vindkraftsproduktionen i den urbana miljön är sällsynt på den svenska marknaden. Uppsatsens syfte är att undersöka vad som menas med urban vindkraft, belysa vilka problem och hinder finns för vidare utveckling och berätta om framtidsplanerna för urban vindkraft i Malmö. Vidare försöker jag även redogöra för vilken påverkan urban vindkraft har på vårt samhälle. Uppsatsen grundar sig på analys av artiklar som behandlar urban vindkraft, studier av rapporter samt intervjuer med ansvariga för dem olika projektet som pågår i Malmö idag.
Fasta driftställen på internet : Ett koncept på (juridiskt) lös grund?
The purpose of this essay is to examine and compare the news covering of Swedens three biggest cities (the metropolitan areas) and their surrounding areas with the covering of the rest of the country (the provincial areas) in two daily national newspapers, Aftonbladet and Dagens Nyheter. The aim has been to answer the following questions:- What amount of the news coverage in Aftonbladet and Dagens Nyheter concern the metropolitan areas compared to the provincial areas, and how do these two newspapers differ in the news covering of these areas?- Is there a difference in the news articles size and content, depending on weather they concern the metropolitan or the provincial areas?- How has the balance between news concerning metropolitan and provincial areas changed over the recent 20 years?The theories used in this study are News values, the media commercialization and Popular Journalism, and The Agenda Setting Theory. The method that has been used is a Quantitative Content Analysis.Despite the essays hypothesis, that the news coverage in the two newspapers would be dominated by material from the metropolitan areas, the result showed that a majority of the examined articles concern the provincial areas. It also showed that Aftonbladet has a bigger percentage of provincial news than Dagens Nyheter.
Nytt ventilationssystem till djurstallar :
There is two dairy farms in Sweden with ability to be opened on both long sides, one outside
Hjo and the other one, Brandstadholm, north of Sjöbo. When there is no measures and results
or not enough literature about natural ventilation and especially on this kind of air inlet, makes
my tests very interesting not only on Alnarp, but among other companies.
I would like to find out if there is any air movements direct on the cows, how high/low
temperature, air humidity, light intensity and noise standard inside the barn. Does
Brandstadholm fulfil the rules and regulations when it comes to climate inside the barn? Could
this system become the new dairy barn instead of the conventional barns in Sweden?
I am going to focus on the animals environment, after all they are the one who is going to
spend the most of the time in the barn.
I used five electrical loggers distributed inside the barn to measure the temperature and one of
the loggers measured the air humidity, every 15th minute. One logger were placed on the
outside which measured both temperature and air humidity.
EN REN KONFLIKT, OM REN, VIND OCH MALM En normativ studie om samernas r?tt till mark under den gr?na omst?llningen
This study aims to unravel if it should be accepted to use natural resources in the Sami reindeer grazing area for the green transition. Mines, wind parks, and other infrastructure in the reindeer grazing area create problems for the reindeers which makes it difficult for the Sami to proceed with this traditional practice. While the Sami people have right to practice these customs the minerals and land which in it lies could be crucial to successfully go through the green transition in Sweden and the European Union as well. To answer the question: Should it be acceptable to use natural resources in the Sami reindeer grazing area to accomplish the green transition? a reflective equilibrium will be applied to the principles of egalitarianism and collective rights.
Soil carbon in small-holder plantain farms, Uganda : a comparison between agroforestry and non-agroforestry
Smallholder farmers in Uganda suffer from declining productivity. With a rapidly increasing population, marginal land is taken into production and the current land
management leads to loss in soil fertility and escalation in soil erosion. There are studies indicating that the use of agroforestry increases soil organic carbon (SOC)
compared to systems without trees. Soils which are high in carbon have many advantages, for example better water holding capacity, which can reduce stress on
crops during drought.
The aim of this study was to determine the effect agroforestry has on SOC concentration in small-holder farming systems in Uganda. The intended system to
study was farms practicing agroforestry methods or not in intercropped plantain (cooking banana) fields.
Elmontörernas syn på elsäkerhet : En studie om att öka elsäkerheten i Telge Nät AB
In today?s society, safety in a workplace is an important factor to any organization. Focus on improving the working conditions by making them safer through technology is taking us into a time where we rely on technology to keep us safe. How well developed the technology may be, it is still not enough to keep us entirely from harm. Human error will always be a factor in the human interaction with a workplace.
Ruminants´production within agroforestry systems in rural Rwanda : production benefits and problems
Intercropping involving trees is called agroforestry and makes it possible to get higher production for every area unit. The trees can function as food, fodder, fuel, medicine; prevent mark erosion and much more. Agroforestry can also be combined with animal husbandry.
The aim of this study was to document the animal production systems used by rural small-scale farmers maintaining ruminants and using agroforestry in the northern province of Rwanda. The farmers using agroforestry is expected to have higher milk yield than average due to homegrown protein.
The method used during the study was semi-structural interviews with booth open and closed questions. In order to get in contact with farmers that matched the criteria; small-scaled rural farmers with ruminants and using agroforestry, the ?Vi Agroforestry Programme? (Vi-Life) in Kigali were contacted and the staff worked as supervisors, translators and contact with the farmers throughout the study.
During the study nine individual farmers, two cooperatives breeding sheep and one group interview were conducted.
Kollektivt Musicerande
The purpose of this master thesis is to identify some phenomena that may contribute or work against the individual musician?s opportunities to contribute with their personal musical intuition in the orchestral work. I want to investigate under which conditions and in what context the orchestra environment gives musicians opportunities to take musical initiatives. I will also test a method to develop and work with musical intuition in a staged trombone audition called blåst. My wish is to highlight orchestra musician's perspective and experiences and to discuss where in an orchestral musician?s everyday work the artistic and authentic musical initiative appears and how we are going about it.
Vegetarisk kost och dess påverkan på den orala hälsan
Många faktorer påverkar den orala hälsan, däribland kosten. Idag finns många olika kosttyper samt livsstilar, och något som ökar i Sverige är den vegetariska kosthållningen. Syftet med denna litteraturstudie är därför att kartlägga vilken inverkan vegetarisk kost har på den orala hälsan. Artiklarna som användes i denna litteraturstudie hämtades från databasen PubMed, och studiernas referenslistor granskades kritiskt. Det upptäcktes också artiklar genom referenslistgranskningen.
Varför ska vi gå till skolan? : En kvalitativ studie om skolk på gymnasiet utifrån ett sociologiskt perspektiv
The aim of this paper is exploring questions regarding the problem of absenteeism among high-school students in Sweden. Fifteen students attending an urban high-school have been interviewed about their views and experiences of absenteeism. The author analyzes the students? answers by taking into account two different sociological approaches which give two different explanations about the way young people experience and estimate education. The French sociologist Bourdieu theorized that differences in cultural capital influence the permanent internalization of patterns of thought and behavior.