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3544 Uppsatser om Natural production - Sida 27 av 237

Foderbetor och kogödsel som substrat för biogasproduktion; anaerob mesofil samrötning i labbskala

One of Sweden?s sixteen national environmental objectives strives to decrease the impact on the climate. By 2020, green house gas emissions should be 40 % less compared to the levels of 1990 and a minimum of 50 % of the energy consumption should come from renewable energy sources. Because of this there is a great need of increasing the production of renewable energy. This is where biogas comes in as a competitive alternative.

Följdeffekter av olika användningssätt för vedråvara : en ekonomisk studie

Since the turn of the millennium a sharp increase in the interest for bio energy has been observed. Important reasons for this growing interest can be due to the fact that fossil fuels are a finite resource. A net discharge of greenhouse gases occur when fossil fuels are burned. The discharge of greenhouse gases are considered to be the main reason to the greenhouse effect. Means of control to increase the use of bio energy has been introduced and, as intended, the use of bio energy has increased. As a result of the legal provisions the ability to pay for bio energy has increased, which the forest industry view as a problem.

Ekonomiska konsekvenser av etanolproduktion i östra Sverige : en analys ur lantbrukarens och förädlingsföretagets perspektiv

This study analyses the economic consequences due to ethanol production in Eastern Sweden. The analyses consider the cooperative and the farmers as one vertically integrated company. The area that found the market in this study is illustrated in figure 1. The analyses assume that all members act jointly with the objective of maximizing joint profits at the farm level as well as at the cooperative firm. A mathematical model is created to calculate the optimal use of arable land.

Framtagning av korrigeringsfaktorer för enhetstider och kapaciteter : Ett sätt att öka kvalitén på Skanskas normallägen.

Skanska is using work schedules that are specifically designed for employees in the production. These work schedules are called best practice. These are guides containing technical descriptions, design references, capabilities, etc. for work activities. This support function facilitates the work preparation and planning of future work.

Ledtidsreduktion vid ACG Nyström

A report has been made at a company in Borås at a company called ACG Nyström. Thecompany is today international and is marketing advanced equipment, systems and furthereducation to the manufacturing industry. A part of ACG Nyström?s production is a machinethey call Unimat. ACG Nyström doesn?t just stand for the actual production of the machine,but also for assembling and installation of the machine at the final customer.

Svinnoptimering VTIS1

The goals of this Bachelors? Thesis were to establish the production loss through the VTIS1 Pasteur at Arla Foods Linköping dairy and then suggest simple but effective solutions to minimize the losses for each production run. If the timeframe allowed it, some of the solutions would be implemented and tested in full production to determine their impact on economic and environmental savings.The very first step of this project was to establish the statistics over what losses there is in the production pipeline through VTIS1, from milk and powders in mixer tanks to finished and packed products in cold storage. Then, when knowing how much product was actually lost and where, those bottlenecks could be pinpointed and examined more closely. At this stage the focus was switched, from the otherwise complicated and broad manufacturing process, to the VTIS1-aggregate, since early data indicated there were quite substantial losses there.In conjunction with this project Arla Foods purchased an absorption photometer-measuring device (OPTEK AS16) that could be inserted straight into the product stream out of VTIS1, allowing real time measurements of its optical density.

Samgång av olika arter på svenska djurparker

Zoos currently aim at keeping animals in as natural habitats as possible, since they havegone from displaying exotic animals to working with conservation of endangered species.It is therefore more common that zoos keep groups composed of two or more species in thesame enclosure. The aim of this report is to study why and how different species are held atzoos. Species in the wild can interact in different degrees depending on season andresources. When species are held together at zoos the space can be more effectively used,the animals increase their activity and the visitors increase their learning. Mixed speciesenclosures involve more work and risks of injury.

growforgold.org : a design proposal for creating productive green space in cities

The aim of our master thesis is first and foremost to win the competition One Prize - mowing to Growing: Reinventing the American Lawn, announced in USA by the organization Terreform 1, the first of December 2009. Apart from winning the competition we have also tried to reach a deeper understanding of food production today and its future possibilities. Our ambition to present a winning design proposal has to a large extent decided the structure of the entire thesis. Our completed and submitted design proposal - growforgold.org - is a way of addressing urban food production in a creative way, keeping the sovereignty of the individual in mind. Instead of presenting a place-specific design solution our proposal aims to create incentives and possibilities for urban farming to take place anywhere and anytime. Our submission to the competition represents both a tool and a platform which, put in practice, could make landscape architecture happen through the hands of the individual.

Jämförelse mellan sojaböna och åkerböna som proteinfoder till växande grisar

The soybean can be used in multiple ways, and its high oil content makes it suitable for extraction. Soy bean meal, a by-product of the oil extraction, is a good source of protein with a high feeding value, and is therefore used in a number of different animal feeds. Further, soy bean meal has a low production price, which is one of the reasons for the extensive export of the product. There is a great demand for vegetable-based proteins, especially in the organic production where synthetic amino acids are banned. However, the current production of soy beans is not environmentally sound and that combined with the long transport distances amplifies the need of finding a locally produced protein source.

Traditional milk production in cattle in a semi-arid area in Kenya

Livestock of pastoralists provide meat, milk, blood, dung and are useful for transportation purposes. In semi-arid and arid areas with very low precipitation the herder must often walk far distances to feed the livestock. This affects the animals? production, especially of milk. Previous studies have investigated how to improve milk production in terms of milking strategies in cattle.

Side effects of biological control agents in agriculture : does the bacteria Bacillus amyloliquefaciens affect the earthworm Aporrectodea longa?

Pathogenic microorganisms pose a big threat towards food production. Meanwhile, negative impacts on humans and environment are seen by the use of pesticides. Biological control agents are an alternative to the use of chemical pesticides, and plant-growth promoting rhizobacteria, such as Bacillus amyloliquefaciens has been shown to have good properties as biocontrol agents. Before these bacteria can be used commercially their impact on other soil organisms has to be evaluated. This thesis looks into what biocontrol bacteria are and how they might affect earthworms.

Optimeringsflöde av modelleringsprogram vid broprojektering : Analys av de tre modelleringsprogrammen Tekla Structures, Revit 2013 och Rhinoceros

This thesis treats Building Information Modeling, BIM, in the production stage. Brieflydescribed BIM is virtual model of a building object where all information about theobject is gathered. All the involved operators in the construction project have access tothe model and can gather or share information about the project. There are several waysto apply BIM in the production stage. This thesis primarily deals with visualization of theobject, preparation and planning, the ability to take amounts from the model andcoordination and clash control.The basic issue was highlighted by Byggdialog AB.

Avsättningsmöjligheter för slaggrus från avfallsförbränning vid Åmotfors Energi

The incineration of waste is steadily increasing in Sweden and so is the production ofashes. The bottom ash has for many years been used as construction material inlandfills. Now many of the nation's landfills are closed and there is a great need to findanother beneficial use for the ash. Bottom ash is a gravel-like material and with itsmaterial properties it can replace natural gravel in parts of roads and surfaceconstructions. Today this use is only approved within landfill areas where leachate iscollected and checked.

En longitudinell studie av tidig talutveckling hos barn med isolerad gomspalt

The present study examines in a longitudinal perspective earlyspeech development in children with partial isolated cleft palate comparedwith children with unilateral cleft lip and palate and children with typicaldevelopment. The groups were compared regarding consonant production at18 months, 3 and 5 years. The results showed that speech development inchildren with isolated cleft palate did not differ significantly from that inchildren with typical development except for production of oral fricatives at18 months. The children with unilateral cleft lip and palate had significantlymore speech deviations at all ages. The children in both cleft palate groupshad significantly higher hearing thresholds at all ages.

Stavelsen som enhet i läsinlärningen : Ett specialpedagogiskt perspektiv

The aimof this study is to contribute furthermore to understand the complexity of theprocess of learning to read and write in an inclusive environment. It focus on the syllableinstead of the phoneme as a unit in this process which is not the most common way ofdoing it. The report is based on a qualitative analysis of this task in pre-school and gradeone at a primary school in a small municipality.In the result, I have found, that the very structured working process and the diagnosticapproach helps the teachers to understand on what level pupils are at. The pupils whostart working this way in pre-school, feel safe knowing what is expecting from them andthey also learn from each other. All pupils in grade one have, before w 45 in autumnterm, very good letter knowledge and have learnt how to read words with two syllableswith a consonant-wovel-structure.

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