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557 Uppsatser om Alien plants - Sida 35 av 38

Teknik för vårskörd av hampa till stråbränsle :

Hemp is an annual energy crop that fits very well in Swedish crop rotations. It is an interesting crop with many benefits, for example its ability to establish a large quantity of biomass in one year. Hemp is easy to grow and out-competes unwanted weeds through its aggressive growth pattern without the need for pesticides. Interest in growing hemp and other energy crops is currently decreasing, apparently because of high grain prices. These high prices give a higher net profit that we believe could partly cover the cost of hemp cultivation, while the hemp in turn would improve the crop rotation and thus repay its debts in the form of increased yields of other crops. The great disadvantage of hemp is the lack of knowledge about spring harvest of the crop.

Ett framtida stall för kaninproduktion.

This survey was made to investigate the possibility of using an alternative method of fencing inSwedish forestry. The most common way of fencing in Sweden today is made by a two meter highmetal net that is attached to turned impregnated poles. The fencing methods that have beeninvestigated is a fencing system made completely out of wood so called ?German wood fence?.Browsing of game in forest regeneration areas is often a big problem and some kind of protection ofthe plants is often necessary. There is several ways of building fences and the most common way isto use metal nets and impregnated poles, this leads to a problem when the fence has profiled itspurpose.

Den ekonomiska lönsamheten för solvärme i Sverige

The sun is an endless energy source and the heat it produces can be used to heatup our homes. This technology is relatively old and was introduced in the late70-s. There are two kinds of solar collectors that are most frequently used todayand these are plain solar collectors and vacuum solar collectors. The plain solarcollectors are the once that are used the most but the vacuum solar collectorshave increased more as a percentage the last couple of years.The biggest question asked regarding an investment in solar heating is if theplant is economically profitable. This question has no direct answer because itis dependent on a couple of prerequisites.

Utvärdering av Naturvårdsverkets bedömningsgrunder för makrofyter i sjöar

According to the Water Framework Directive of the European Union, macrophytes should be used as indicators in the ecological and environmental monitoring of lakes. In the member state Sweden the Environmental Protection Agency has elaborated assessment criteria for determining lake status based on macrophytes. The main focus of this thesis is to evaluate the efficiency of the assessment criteria for macrophytes. In addition the concordance between the ecological status classes of the four quality factors included was analysed.The assessment criteria for macrophytes are based on the total phosphorus preference of the respective species. The focus is thus mainly on the nutrient level of the investigated lakes and the environmental problem monitored is eutrophication.

Minireningsverk i Luleå kommun: en funktionsstudie

Miljökontoret i Luleå har sedan 1997 gett tillstånd till ett antal minireningsverk i Luleå kommun. I april 2006 fanns det totalt 42 hushåll med minireningsverk. Syftet med examensarbetet har varit att ta reda på vilka typer av minireningsverk det finns i kommunen, hur de fungerar, vad som egentligen kommer ut från anläggningarna och om serviceavtal finns. I examensarbetet finns en litteraturstudie över vad avloppsvatten innehåller och allmänt hur minireningsverk fungerar. De reningsverk som finns i kommunen är från tre olika tillverkare, arbetet innehåller en beskrivning av dessa anläggningar baserat på det material som finns från tillverkarna.

Den positiva hälsovågen : En kvantitativ studie om hälsofrämjande arbete

The construction of buildings and paved surfaces changes the natural water balance.Precipitation generates surface runoff and storm water instead of infiltrating into the soil.Storm water has come to be considered as a major source of pollution in lakes and streams inthe vicinity of urban areas. Reduction of pollutants in storm water is a key action in order toprotect sensitive recipients and maintain high water quality. Storm water is traditionallytransported by storm sewers to the nearest recipient. In recent years the approach to stormwater management has changed; storm water should primarily be disposed of on site, throughlocal disposal of storm water, LOD. LOD is created by a combination of the function ofseveral smaller local facilities and the general sewer system.

Vedartade marktäckare för hållbara planteringar

Jag valde ämnet ?marktäckare för hållbara planteringar? då det finns en efterfrågan hos anläggare och kommuner på marktäckande växter som har lång hållbarhet och låga skötselkrav. Dessutom ville jag utöka min kunskap inom växtanvändning då jag kommer att ha nytta av det i min yrkesroll som trädgårdsdesigner och rådgivare. Syftet med arbetet har varit att ta reda på de faktorer som spelar in för att man ska få ett långvarigt resultat i en plantering med marktäckande växter. En sammanställning på tio arter som ofta ger ett lyckat resultat och som skulle kunna användas till att kombineras tillsammans har gjorts. Då det har varit svårt att få tag i relevant information genom litteraturstudier har jag även gjort en fältstudie och intervjuer. Fältstudien gjordes på Splendor Plants försöksodling där en del av försöken är på just marktäckande växter.

Trähägn en tänkbar metod för viltskydd i Svenskt skogsbruk?

This survey was made to investigate the possibility of using an alternative method of fencing inSwedish forestry. The most common way of fencing in Sweden today is made by a two meter highmetal net that is attached to turned impregnated poles. The fencing methods that have beeninvestigated is a fencing system made completely out of wood so called ?German wood fence?.Browsing of game in forest regeneration areas is often a big problem and some kind of protection ofthe plants is often necessary. There is several ways of building fences and the most common way isto use metal nets and impregnated poles, this leads to a problem when the fence has profiled itspurpose.

Förslag till skötselplan för Uppsala högar och Tunåsen : ett exempel på medbestämmande planering

This Master thesis is made at the request of the local municipality of Uppsala in Sweden. The purpose of this work is to create a guiding management plan. Recreation, conservation of the cultivated landscape and the historical environment, conservation biology and the aim of the landowners are all considerd. The area is almost 34 hectares and located north of the centre of Uppsala. Landowners are the National Heritage Board, the diocese of Uppsala, the university of Uppsala, the local municipality of Uppsala and one private landowner.

Kålgallmygga, Contarinia nasturtii Kieffer : en växtskadegörare på kål

The purpose of this paper is to examine what problems cabbage growers have with the Swede Midge. The last few years the Swede Midge, Contarinia nasturtii, has become a larger problem for cabbage growers in several countries in Europe as well as in Sweden. In Canada the problems are so severe that the midge is classified as a quarantine pest and therefore certain rules have to be followed. I have collected facts of the biology, host plants and reproduction of the Swede Midge, as well as the growers experiences and the occurrence of the midge in Canada, Europe and Sweden. The Swede Midge is hard to control because of its short life cycle and the larvae are protected between the heartleaves of the plant. When the larva feeds on the growth point the plant becomes distorted, in some cases several heads develop or none at all. When the midge infests spring rape its flower buds become undeveloped and rosette like.

Parkplan för Kungälv med förutsättningar för sociala värden :

To work with environments outdoors for people, animals and plants is the main topic for the landscapearchitect. On several occasions the work is about public places that is to be in relation with other parts of the town. It is about the activities and the life that take place. The physical environment and the interpretation of it gives possibilities or obstructions for people who moves around or spend time in it.Since public places, parks and places for movement are used in daily life they strongly effect the people who use the places. The concequences of this effect can be positive or negative experiences.A positive example is a passage over a brook on the way to school while a negative one is to be afraid while passing a tunnel when it is dark outside. Other examples of concequences are stress effect from traffic noice or calming environments with twitter of birds. The physical environment is also a part of the total interpretation of a town.

Enkätundersökning till Älvdalens Besparingsskogs delägare

Älvdalens Savings Forest was formed in the late 1800's. During this time the country was conducting the first major land reform in Sweden, namely the redistribution of arable land through government action. In Älvdalen people saw an opportunity to form Savings Forest, that is jointly owned forests, where everyone would get part of the proceeds. The yield in the first place would cover were costs to manage and monitor the forest and to the measures to ensure regrowth and improve the forests. You could also use the proceeds to develop the area and make it easier for the population to manage their forest. In early summer, a survey was sent to all the members of Älvdalens Savings Forest.

Lokalt omhändertagande av dagvatten i Västerås - Möjligheter till ökad användning i befintliga innerstadsområden : Local disposal of storm water i Västerås - possibilities for increased use in downtown areas

The construction of buildings and paved surfaces changes the natural water balance.Precipitation generates surface runoff and storm water instead of infiltrating into the soil.Storm water has come to be considered as a major source of pollution in lakes and streams inthe vicinity of urban areas. Reduction of pollutants in storm water is a key action in order toprotect sensitive recipients and maintain high water quality. Storm water is traditionallytransported by storm sewers to the nearest recipient. In recent years the approach to stormwater management has changed; storm water should primarily be disposed of on site, throughlocal disposal of storm water, LOD. LOD is created by a combination of the function ofseveral smaller local facilities and the general sewer system.

Val av material och utformning av sinnesträdgårdar för gravt utvecklingsstörda :

The purpose of this thesis was to determine what materials should be used when creating a stimulating garden for intellectually handicapped people and whether there are materials that are better than others to use in this kind of environment. How the materials preferably can be used and how the environment should be designed to satisfy the need of each individual will also be discussed. Seriously intellectually handicapped people have the same level of intelligence as a normal 0-2 year old child. It is important to point out that these individuals can not be compared to a normal child in other aspects than the level of abstract thinking and perception of reality. As the grown up intellectually handicapped people have remained a lot longer on this stage of intelligence they have got more experience. (Kylén 1981) It is important with a lot of different experiences for the brain to develop normally, which implies the use of many different materials to achieve the best stimulation (Kylén 1981).

Växter som en källa till järn i maten

På senare tid har konsumenter visat ett ökat intresse för näringsmässig kvalitet som innehåll av vitaminer, mineraler och bioaktiva ämnen hos frukt och grönsaker. Samtidigt är järnbrist den vanligaste och mest utbredda typen av näringsbrist globalt, även i industrialiserade länder. En allmän uppfattning verkar vara att animaliska produkter som kött och blodmat utgör den enda fullgoda källan till järn. Denna uppsats syftar till att undersöka om den uppfattningen grundar sig på att kött är den mest kända och omtalade järnkällan i västvärlden? Ytterligare frågor som belyses är; vad skiljer järn i växter från animaliskt järn när det gäller koncentration, biotillgänglighet och upptag? Vilka faktorer påverkar koncentrationen samt biotillgängligheten av järn? Hur påverkas dessa faktorer? Vilka exempel på övriga ämnen i växter finns som påverkar halten samt upptaget av järn till människokroppen? Hur kan effektiviteten av växter som järnkälla förbättras? Som metod valdes att göra en litteraturstudie.

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