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857 Uppsatser om Plantöverlevnad - Sida 35 av 58

Miljöoptimera avfallsindustrin i Sverige : - Ätervinn restprodukten gips

One of the most common ways to produce heat and electricity in Europe today is by the incineration of waste or combustion of coal. These materials can be very sulfurous and during combustion sulfur dioxide is produced. This is an environmental and health related toxic substance which is why power plants have strict regulations on removing it from the flue gas. Sulfur dioxide is removed from the flue gas by adding a limestone reagent. The sulfur dioxide reacts with the limestone and the synthetic product obtained is ?Flue Gas Desulfurization gypsum?.

Stabilisering av process

Calesco Foil AB is a manufacturer of thin flexible circuits for heating or electric conduction.The plant is located in KolbÀck, Sweden.One of the company?s products, the conducting polymer pasta is in present situationunpredictable. Unpredictable in the way that the same type of heater shows differentresistance, depending on which time they have been produced. The desired repetitivelyprocess is almost non-existing.The aim of this master thesis is to primary identify those parameters that effects theresistance, observe and if possible to perform tests on them. The results from this analysisstand as base for recommendations to achieve a repetitive and standardized printing process.The results and the observations from the tests indicate that a repetitive process is possible toachieve.

Är GPS-styrning lönsamt :

GPS is perhaps the future in agriculture. The next years will show it but the precision becomes only better and better and the number of users becomes only more and more. This work shows experiences from today's users and how the profitability can be improved on a farm with normal plant cultivation. The aim is to show how big the actual advantage can be to have a GPS and how good precision there is with the equipment. John Deere and Trimble are the big producers of GPS equipment to the agriculture.

Design och förÀdling av en liten och kustnÀra trÀdgÄrd :

2. SUMMARY A small garden exposed to a harsh coastal climate can be difficult to design. Limitations in space and in plant varieties increase the needs of an in-depth knowledge to achieve wanted goals. In this degree project the challenge has been to create a functional and position adapted garden for a very small beach house lot in Mölle, a little harbour village at the south coast of Kullaberg. ?Villa Malm?, is situated directly on the bedrock in a close settlement where the gardens, in most cases are very small and exposed to strong salty winds.

PÄverkan pÄ elektronik och sensorer i radiologisk miljö

The objective of this thesis is to make a training material for KSU, which shows how radiation affects the different electronic components in a radiological environment.All electronic systems in the presence of high ionizing radiation can experience difficulties and be destroyed.This influence may compromise the control system and thus the safety of a nuclear reactor plant.To achieve this objective requires a description of electronic components and sensors, to better understand its function.This thesis will also show the possible solutions available that the author found interesting.Organizations such as NASA, CERN and ESA have worked to develop electronic components immune to radiation. Those organizations have also developed a test protocol that guarantees to a certain extent the security of electronic components in a radiological environment.Since we know how the material reacts with the radiation, it could develop a material that can be resistant to radiation or like CMOS technology has proposed, to reduce the component to avoid the storage of charge in the oxide.Another solution can be the GRAPHENE. Its features will revolutionize the electronics and provide answer to the radiation problems, Graphene will replace Silicium and the electronic components will only have a few nanometers dimensions so the oxide area also reduces, and in this way avoid the known problem of storage of charge..

Skuggföredragande vÀxter i trÀdgÄrd

Detta examensarbete innehÄller en beskrivning av vÀxter som under olika förhÄllanden trivs och kan vÀxa i omrÄden med delvis eller hel skugga. Beskrivningarna av vÀxterna Àr översiktliga och Àmnar inte informera lÀsaren grundligt om vÀxten utan enbart om enklare fakta för att kunna planera sin trÀdgÄrd. Jag har valt att inrikta mig pÄ markförhÄllande beroende pÄ klimatet (torr, fuktig och blöt mark) och markförhÄllande beroende pÄ substratet (sand, lera, humus och torv) samt temperaturbundna vÀxter. DÀrefter följer en slutsats dÀr jag reflekterar över mitt arbete. ***********This thesis contains a description of plants that thrive and can grow under different conditions in areas with partial or full shade.

SpillvÀrmeÄtervinning ur kylvattensystemet ismÀltverket pÄ Sapa Profiler AB i Sjunnen

The smelting process at Sapa Profiler AB in Sjunnen generates large quantities of waste heat which is absorbed by the cooling water when the aluminum is cooled down. This paper is the result of a Master?s Degree Project aiming to present the conditions for recycling the waste heat. The cooling water absorbs the heat from the aluminum at an average rate of 600 kW and the paper shows that it can be used to replace electrical power consumption for heating the production plant?s facilities.

Att göra mÄl : en jÀmförande studie mellan Flygvapnets och Forsmarks sÀtt att sÀtta upp mÄl för sÀkerhetsarbete

I chose to study how the Swedish Air force carries out their work with setting goals for their work to improve flight safety and compare this with how the Swedish nuclear power plant Forsmark performs their work with improving nuclear safety. The study showed that both organisations have a lot to improve on in their ways of how to work. Especially when it comes to engaging the employees in the process, both in letting the employees be a part of coming up with areas to work on and in letting the employees evaluate which progress that has been made. It also showed that both organisations need to improve their methods for evaluating the work that has been done. This is especially important for the Air Force which evaluates on many levels and locations and did not have a set standard for how to conduct the evaluation.

Centrala logistiska faktorer i en förÀdlingskedja för massproduktion av trÀpellets : Fallstudie pÄ Kopparfors Pelletsfabrik

This examination work aims to describe how a supply chain around the biggest pellets factory in Sweden will be configured in a logistic perspective. The plant and associated infrastructure are in the building phase and will have production start on the 2 November 2009. The key question that is set in this examination work is to recognize the logistic processes which are essential for an effective flow of materials and information that link the source of supply with the ultimate customer. In order to get the answer, a flowcharting of these supply chain processes is required for understanding the pipeline activities such as input and storage of raw material, the production system and the output of pellets to the customers. The basis for this supply chain map is a model-based representation of these logistic processes and activities that are involved around the pellets factory.

Vintervegetation genom ljus : om hur man med belysning kan framhÀva avlövad vegetation i offentlig stadsmiljö

Use of lighting is crucial to make public urban places available during dark hours. Landscape architects participate in planning of lighting, but during our education there is very little taught on the subject. Through this study we approach the subject of lighting by looking into lighting methods for urban plant materials during winter. In this thesis we look into ways to emphasize the visible characters and experiences of urban plants during winter season using light. Target audience are landscape architect students and landscape architects without knowledge of lighting. The part of the thesis that describe basic conditions for, and visual characters of plants can be useful to lighting designers without knowledge in this subject. Working methods used were the following: ? Pre-study about light and lighting techniques through literature and dialogues. ? Compiling important visual winter plant characters through photography and literature. ? Outdoor light experiments with plants.

Obtaining high quality textile fibre from industrial hemp through organic cultivation

AbstractThe urgency to find alternative fabrics to conventionally produced cotton is increasing as vast amounts of agrochemicals are used and a lot of irrigation is required. In this literature survey the potential of organic cultivation practices to produce highly qualitative hemp fibre, suitable for the textile industry, was investigated. The definition of a fibre in the textile context as well as of the qualities that are essential for a textile fibre was necessary as a base for the discussion in this thesis. The quality parameters looked at were fineness, strength, length, friction, and colour. The impact of external growth factors and plant development on these quality properties are discussed.

Hur kan mÄltiders klimatpÄverkan minska? : Hinder och mo?jligheter fo?r va?xtbaserad kost vid offentliga matserveringar.

MÀnniskans utslÀpp av miljö och klimatpÄverkande vÀxthusgaser har ökat i snabb takt de senaste hundra Ären. Fler varor produceras, konsumeras och transporteras över hela jorden för att uppfylla de krav mÀnniskor har pÄ sin levnadsstandard. Livsmedelsindustrins roll i utslÀppen Àr betydande, speciellt köttproduktionen, som stÄr för 18 procent av vÀrldens totala vÀxthusgasutslÀpp. Genom att minska den mÀngd kött som ingÄr i mÀnniskors mÄltider och gÄ mot att Àta mer vÀxtbaserat, som inte innehÄller köttprodukter, kan matens miljöpÄverkan minska. Ett viktigt omrÄde Àr offentliga matserveringar, vad som serveras dÀr har en inverkan pÄ mÀnniskors matvanor och deras syn pÄ mat.

Avbördningskapacitet för Traryd kraftverk: en modellstudie vid dimensionerande flöde

Sydkraft Vattenkraft AB owns and operates the Traryd hydropower plant, located in the river Lagan in the southern part of Sweden. The gravity dam is classed according to RIDAS guidelines (Hydropower Industry Dam Safety Guidelines) as a class 1B dam. This means that the dam must discharge a class 1-flow which has a return period of 10 000 years. The inflow into the dam has been calculated in an earlier report to 495 m3/s, with a waterline at an elevation of 126, 3 meters above sea level. The gravity dam has a discharge system with two rectangular weirs, which results in a smaller discharge than the necessary 495 m3/s.

Projektering av vindkraftspark i Juddhult, SmÄland

The aim with this study was to collect fundamental information, and to plan, a windpower farm in Juddhult , SmÄland in southern Sweden. The goal is to collect the bestavailable projecting planning support. The pieces of this projecting planning supportthat will be presented is; Environmental Consequence Description (MKB), productioncalculations, comparisons between different plant types, economic calculations, evaluatethe economy and give some farm design suggestions. The imagined wind farm will belocated in forest environment and which may cause a number of new problems. Specialinterest that will be affected, where special consideration because of the forestenvironmental is requested is, hunting, wetlands, ancient monuments and windturbulence.

Gas som bedövningsmetod vid slakt av slaktkyckling :

Electrical stunning is the method that has been used in Sweden to stun broilers prior to slaughter. However, for reasons of animal welfare and meat quality, research has been made in the EU to develop new stunning methods. Gas stunning is now regarded as the best alternative. In this study literature has been reviewed with focus on different gas stunning systems and observations have been made at two different slaughterhouses regarding animal welfare before, during and directly after stunning. At one slaughter plant carbondioxide was used in a two-stage system where the birds were standing on a conveyer belt during the stunning procedure.

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