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372 Uppsatser om Stable - Sida 25 av 25
Isolerande och skyddande dubbelväv - Produktutveckling av ett kylande fodral
Denna rapport beskriver en produktutvecklingsprocess som behandlar utvecklandet av ett textilt material som isolerar och skyddar. Det textila materialet ska fungera till ett kylande fodral utan att förstöra dess funktion och behöver därför uppfylla en speciell kravspecifikation. Materialet ska isolera mot kroppsvärme, vara stabilt, skyddande och slitstarkt. Dubbelväv valdes tidigt i arbetet då det är ett enkelt sätt att kunna påverka det textila materialets egenskaper i form av material- och konstruktionsval, i en betydligt större utsträckning än i en enkelsidig väv. För att utveckla ett material med de efterfrågade egenskaperna har tester utförs och den metod som har använts är hypotesprövning.
The effect of rapeseed oil and palm oil supplement and milking frequency on milk yield and milk fat quality
Milk fat is an important feature in many different milk products and other foodstuffs and it is often crucial for the dairy plants that the milk fat is Stable for different manufacturing processes. Lipolysis is the enzymatic degradation of fat and is the one of the causes for an elevated amount of free fatty acids (FFA) in milk. Further, the change in fatty acid (FA) composition in milk can affect the stability of the product and also the manufacturing process. Both internal and external factors, at farm level or at the dairy plants can affect both FA composition and content of FFA. Milking frequency (MF=number of milkings per cow and day) and the composition of feed are two examples of factors generally performed at farm level.
The objective of the present study was to evaluate how FA composition of milk and amount of FFA are influenced by two different ingredients supplemented to concentrate.
Environmental variables determining the occurrence of Cladonia parasitica and Hertelidea botryosa, two boreal lichens confined to wood
Biodiversity is essential for human well-being and it is defined as the genetic variation within species and the variety of species and ecosystems. Biodiversity provides several ecosystem services which are necessary for human beings but there are different threats towards the
biodiversity. The biodiversity linked to the forest in Sweden are threatened, about 50 % of the red-listed species in Sweden are associated with forests. This is linked to the commercial exploitation of the boreal forest in Sweden which started 200 years ago. The forestry the last
50 years, with clear-cuts, have contributed to a fragmented forest landscape.
Challenges and incentives for sustainable manure management in Russia
The Baltic Sea is threatened by eutrophication that largely is due to nutrient leaching from farmland within the catchment area. To solve this problem the surrounding countries cooperate within various configurations such as HELCOM and the EU-financed project Baltic Compass. Poor manure management in Russia has been discussed frequently the last couple of years.
A literature review of different types of reports and legal acts is the core of this degree project which has been performed in connection to two ongoing research projects financed by EU (Baltic Compass) and SIDA. It is supplemented with interviews with Swedish agricultural consultants and travel reports from two occasions when I had the opportunity to discuss with Russians active within the agricultural sector. Different hypotheses were investigated and discussed.
The environmental debate in Russia is quiet and there is a widespread approach that economic profit always trumps environmental concern ? a Soviet heritage that influence the Russian agriculture considerably.
The Russian legal acts on Stable manure management focus mainly on sanitary questions and only secondary on nutrient leaching.
Kvalitet i brödvete :
The quality of bread wheat is a large subject to study. The quality rests on two legs. The first one is the inheritance of specific characters, which can be influenced through plant breeding and type of cultivar. The other one is the environmental influences, such as crop rotation, nutrition, harvest and storage. The latter factors are possibly to affect through cultivation practices, while other factors are not possible to influence on for the grower, such as seasonal changes of weather and the soil content.
Hur motiverar man beställare till att ge utrymme för landskapsarkitekten att arbeta med brukare i en planerings- och projekteringsprocess?
Residential estates are created without any adaptation to the users who will use them. Clients wouldprofit on involving users in an early project stage to create housing estates adapted to the user?s needsand wishes. Clients of the housing estates that require missions from consultants should realize that noone exclusive can represent other people's needs, regardless of the theoretical expertise they possess. TheSwedish million programme in the 1970s is an example of how objective expertise gained control, whichled to the creation of outdoor environments where few wanted to stay and live.
Inhysningsrelaterade skador bland svenska hästar - en studie av distriktsveterinärers erfarenheter
Arkeologiska fynd har visat tecken på att hästen levde vid människans sida redan för mer än 5 000 år sedan. De utmaningar som tidigare förfäder tvingats hantera har i mångt och mycket dagens hästar fått hjälp av oss människor att undvika. Trots detta är inte dagens hästar framselekterade för att reagera annorlunda på omgivingen, utan använder sig av samma samma sätt att hantera sin tillvaro som deras förfäder tvingats att göra för sin överlevnad.
Hästhållningen i Sverige regleras i många avseenden enligt de lagar och förordningar som finns, både i fråga om hur den fysiska miljön ska se ut och vilka krav som ställs på hästens dagliga hantering. Jordbruksverket har tagit fram uppgifter som visar att nästan 90 % av svenska hästhållare tillgodoser hästarnas behov av social kontakt genom att de får gå i hage tillsammans med andra hästar och att 80 % har stall med boxar. Att inhysa tidigare stäpplevande djur på begränsade ytor kan antas medför en hel del risker.
Utvärdering av öppna dikens status och funktion : en förstudie i Västmanlands län
Evaluations of open Ditch status and function, with an assessment of suitability of a conversion to a two stage ditch as a low maintenance alternative.
To illustrate Swedish drainage problems this work focused on two agricultural drainage associations assessed in detail with a new method called MADRAS (Minnesota Agricultural Ditch Reach Assessment for Stability). With the assessment of the MADRAS method estimates were made to conclude the ditches operating
problems.
This was made through measurements of sediment depths, mass bank failures etc. in order to quantify ditch problems and propose practical actions for improved ditch stability and water quality.
The MADRAS surveys were conducted in two main ditches that drains 2900 hectares of land on the northern shores of Mälaren. In the study measurements of the ditch cross-sections were also conducted to compare actual profiles with the original map profiles.
The evaluation showed that parts of the studied ditch sections were operatively poor; main reason was mass bank failure, undercut channel banks, sediment aggregations
and narrowed ditches. The profile survey shows that a majority of the profiles 80 % has sediment accumulations there remains only 64 % of the original profile from the map.
Tillväxtreaktion på kvarlämnade träd i Hagners "Naturkultur" försök :
The primary goal of this study was to investigate how the radial growth of retained trees responds after thinning-from-above. The National Board of Forestry which initiated this study, was interested in whether there were differences in the growth-response between the tree species Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) Karst.). Another question of issue was if there were differences in the growth response between trees of different sizes. It is within the framework of the National Board of Forestry?s, Continuous Forests Project that these urgent questions are to be answered.
Wetland development in the context of ecotourism : a conceptual design proposal for a wetland site in Lake Victoria, Kenya
The travelling sector is expanding worldwide, which puts all destinations under pressure to have a functioning
social system and good resources to manage the problems and take advantage of the opportunities that the
tourism sector can offer a community. The area around Kisumu in Kenya, like much of Africa, tourism can
simultaneously ensure a Stable financial future while it removes, as a result of a growing population, more and
more of the scenery that many tourists want to experience. Responsible travel to natural areas that promotes
conservation of the environment and improves the welfare of local people is what defines ecotourism. A
concept that implies a closed cycle, where visitor?s needs are met in balance with what can be given back,
without risking creating imbalances in society.
Along the coast of Lake Victoria, valuable papyrus wetlands provide Kisumu vital ecosystem services
such as water purification, climate adaptation while it also serves as a reservoir for biodiversity.
Om fototextpoesi : Läsningar av mötet mellan fotografisk bild och poetisk text
What is the relation of image and word, of sentences and pictures? What kind of message does this combination produce when juxtaposed on a single material plane? And how do we read its ?infinite? relation? These are the questions at the center of this inquiry. My main interest concerns the exact nature of the relation between photographic images and textual elements of poetic language when these are juxtaposed in what I call Phototext poetry.The thesis calls into question the conventional reading habits of the conjunction of photographs and texts, and seeks to understand the more complex connections intrinsic to the relation image/word and its material and perceptual play in poetic works. Does a text always ?anchor? the multiple meanings of an image, as Roland Barthes argues? What if the alterations of an image could ?anchor? certain fractions of a poetic, polysemantic textual construct? Is a photograph indifferent to the visual, material permutations of texts that certain contemporary poetic practices produce?I discuss phototextual works and collaborations of various kinds, from Molin fontän [?Molin?s fountain?] (1866) over classic surrealist poetry to language-oriented writing.
Landvinning : scenarier för efterbehandling och gestaltning av Aitikgruvan, Gällivare
Open pit mining creates huge amounts of tailings and waste rock deposits. Due to it's content of sulphide minerals, predominantly pyrite (FeS2), there is a risk of oxidation and formation of acid water containing heavy metals, known as Acid Rock Drainage (ARD). To prevent the process of oxidation, the tailings and waste rock have to be reclaimed. The most commonly used methods of reclamation are a coverage of water or soil.
Mining also results in a large-scale interference in the landscape that will make an eternal change of its appearance.