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1194 Uppsatser om Nitrogen flow - Sida 37 av 80

Produktionsutveckling av bastuaggregatsavdelning

To invent an optimized product is a complicated process. This process is only half of the work. It is equally important to develop a production system that can produce the product in an  efficient and ergonomic way.After several evaluations of conceptual and detailed drawings a final idea has come to light.The idea intends, to the maximum extent, utilize the facility in a more efficient way through moving assembly lines and stations closer to the flock section and the stock for complete products. To make the production better, stations are placed in more logical places given the assignment they are supposed to accomplish. This improves the material flow radically.

Flöden och processer på Fristadstorget

This thesis is about Fristadstorget in the city of Eskilstuna and how the square flow together with the user orientation could be improved. This work focuses on how public spaces best satisfy users through architecture, cognition and information interpretation. I've looked at people's movement patterns in Fristadstorget, with the help of observation from strategic locations. While I also integrated the city?s surrounding and taking in information from already existing buildings around the square.

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.

Uthållig odling med fokus på kväveutlakning

Kväve är en viktig byggsten i allt levande på jorden, och ingår i bland annat aminosyror,proteiner och DNA. Eftersom kväve återfinns i alla växtens celler har det en avgörande roll ivåra odlingssysystem för att få skördar med bra kvalitet. Kväve utgör också en av de storamiljöbovarna inom lantbruket. Överskott av kväve i odlingar medför risk för kväveförluster.Ett stort problem är kväveutlakning, som menas det kväve som följer regnvatten ner i undrejordlager och vidare till grundvatten, vattenströmmar och hav. Kväveutlakning kan ge storakonsekvenser på miljön, och reslutera i övergödning, döda havsbottnar och oballans i våraekologiska system.

Vallört som växtnäringskälla : växtnäringsförsök och litteraturstudie

Russian comfrey, Symphytum x uplandicum, was tested as a plant nutrient source in a trial with tomatoes. Comfrey liquid was produced by Stiftelsen Holma i Höör. Tomato plants of the cultivar Aromata planted in a medium of soil:peat (1:1) enriched with organic nutrients and lime, were fed with comfrey liquid plus Biofer, in three different concentrations. Two different concentrations of BioRika were used as comparison, along with an unfertilized control group. In the comfrey treatment I a total amont of 1g N, 0,23 g P, 0,84 g K, was given to the tomatoes.

Läslust hos elever med svenska som andraspråk. En fenomenografisk studie

The purpose of this master?s thesis is to examine how pupils with Swedish as a second language and school librarians perceive the concept of pleasure of reading and the feeling of being a part of society. Our research is based on qualitative interviews with eight students in grades 6-9 and from two different schools. We have also interviewed two school librarians in these two libraries. As a method of analysis, we used phenomenography because it is the informants' perceptions of the phenomenon of pleasure of reading that we investigate.

Påverkar jordbruk flödet av akvatiska insekter till land? : Effekter av jordbruk på akvatiskt tillflöde till land vid norrländska bäckar

Streams and riparian zone are closely linked by reciprocal flows of energy and nutrients. A large part of the transportation from water to land is in form of emerged aquatic insects. Conversion of land from forest to agriculture can greatly affect aquatic ecosystems, and due to the close link, also affect the adjacent terrestral zone. Investigating how the presence of agriculture in the surrounding area affects amounts of emergent aquatic insects gives an indication on how agriculture, in turn, may affect the terrestral enviroment. The study was preformed alongside ten streams in northern Sweden; five in landscape transformed by agriculture and five in undisturbed forest areas.

Processanalys vid Color Print Sweden AB med fokusering på prepressavdelningen

This thesis work has introduced process orientation at the printing company Color Print Sweden AB. The outcome ofthis work is a survey of the work flow at the prepress department. To visualise the production process at the companya comprehensive mapping of the main process, order-to-delivery, has been made. The work has detected a couple ofcritical elements in the existing process. These elements are the following: initial check of material delivered to the prepressdepartment as well as the control made of the plotter print-out, digital test print and plate.

En ?terinventering och analys av den svenska populationen av svart nervmossa (Campylopus atrovirens)

Bristly swan-neck moss (Campylopus atrovirens) is in Sweden a very rare moss that only grows on a few blocks and cliffs around Gothenburg. The species can globally only be found in areas with high precipitation. Rain fall in Gothenburg has increased with a stronger greenhouse effect. Air pollution in Gothenburg has also improved. Mosses generally benefit from these conditions and this papers hypothesis is that the population of the species has grown because of these more beneficial conditions.

Analys och förbättring av en mätenhet för laddning av elfordon

Reducing the CO2-pollution, resulting from the combustion of fossil coal for energyproduction, is important to affect environmental changes. One way to achieve a reductionis to use the oxy-fuel technology. The technology uses O2 and re-circulated flue gasduring the combustion which results in a flue gas mainly consisting of CO2. The flue gascould then be compressed and stored without environmental effects. A problem thatfollows from the compression is the risk of acidification in sensitive parts of the process.Acidification can occur because of reactions following from the contact of condensedwater and sulphur- and nitrogen-oxides which are also present in the flue gas.This report compiles and evaluates the basis of a scientific unit with the purpose ofexploring the possibilities of extracting impurities of SOx and NOx from the flue gases.The dimensions of the unit are based on basic conditions, defined for an existing oxy-fuelprocess at Chalmers, and on the results of computer modelling.

Automatisk nivåreglering av strålkastare

To be allowed to sell Z-suspended vehicles with dipped beam Xenon or LED lighting, Scania have to develop automatic headlight level control. This master?s thesis aims to be the foundation to that development.The thesis consists of several parts; a market analysis of how competitors to Scania and the general vehicle industry solve this problem; several available principles for detecting the amount of control needed; the construction of a test station for sensors, a control unit and components connected controlled by the control unit; a further theoretical and practical development of one principle ? one rotational sensor connected between the chassis and the back drive axis; a state flow model programmed in Simulink that produces the control signal for the headlight leveling from the sensor input.Lastly the thesis gives some recommendations to the further development and implementation of automatic headlight level control on Scania vehicles..

Det vidgade textbegreppet : i teori och praktik

This work is about the expanded conception of text and takes off in the use of this expression in the high school curriculum. The work begins with a theory chapter, where a few different definitions of text are the basis for reasoning about factors which can have contributed to an expansion of the conception. Hereby other important expressions, related to the expanded conception of text, as hypertext, multimedia and intermediality, are brought up. Further, is examined empirically how the expanded conception of text is interpreted, rhetorically and practically, by a few teachers in the High School. Finally, covered scientist?s theories are discussed and compared with the concluded empiric data.The study shows however, that the expanded conception of text in the curriculum has not become a conception for the teachers who were interviewed.

Självbildens nivå och utveckling i skolanSpecialpedagogiskt stöd ur elevperspektiv

Det talas idag mycket om Sveriges satsningar på en skola för alla. Samtidigt mår många elever dåligt. Det är något som inte stämmer. Syftet med denna studie är att undersöka hur elevernas självbild påverkas av specialpedagogiskt stöd. Avsikten är att beskriva självbild, självkänsla och självförtroende, ur den enskilde elevens synvinkel.

Lyftkraftsberäkning för vingprofiler: Virvelpanelmetoden

The problem presented in this report is that of finding a method to calculate the lift force from a single-element airfoil of arbitrary shape. A number of restrictions are used in order to simplify calculations while retaining reasonable accuracy. The problem is solved for the two-dimensional case only and no finite-wing effects are taken into account. Furthermore, inviscid and incompressible flow is assumed. The method used to solve the problem is the vortex panel method, with vortex singularities distributed over simplified airfoil geometry.

Informationshantering och -spridning på Axis Communications AB

In a complex and turbulent world, several companies begin to realize the value of information as a strategic resource and try to find strategies to manage this. This master thesis aims to describe the information management at Axis Communications AB. Axis is a fast growing company and due to this they have not been able to manage the flow of information whitin the company. To find out how the information was managed at this time we made a survey and employee interviews at three Axis business units. By analyzing the surveys and interviews we found several problems.

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