Sökresultat:
1230 Uppsatser om Dynamical mass-balance modelling - Sida 17 av 82
Recept- och rapporthantering inom blandningsteknik
To reduce emissions of carbon dioxide (CO2) Carbon Capture and Storage (CCS) technologieshave been developed. Chemical Looping Combustion (CLC) is a CO2 capture technologywith the CCS framework, and at Chalmers University of Technology in Gothenburg,Sweden, a 100 kW chemical looping combustor has been built.This project aimed to investigate to what degree air can replace helium as the uidizinggas for uid dynamical studies in a CLC cold ow model of the above mentioned 100 kWfacility. Experiments were performed using air and helium separately as uidizing gas andpressure data were obtained, which formed the basis for the comparison. The project alsoaimed to investigate uid dynamics in the uidized bed and study when the risk of sluggingoccuring was greatest. The results were presented in the form of figures and tables dividedinto pressure, concentration and standard deviation of the pressure.The results obtained showed that air as uidizing gas did not create the same uid dynamicsas helium over the entire fuel reactor.
Betyder individuell balans strukturell obalans? En studie av obetalt arbete i ljuset av Work life balance teorin.
Syftet med denna uppsats är att studera sektorn obetalt arbete. En stress kan bildas av att det obetalda arbetet tar tid från andra åtaganden i livet. Lösningar som presenteras för att komma runt denna stress är ofta inriktade på individer. Då det hushållsnära obetalda arbetet oftast utförs av kvinnor och tar tid från det som annars skulle kunnat användas till förvärvsarbete skulle man kunna hävda att det råder en strukturell obalans i samhället. Här granskas om de individinriktade lösningarna för att skapa balans är med och bidrar till den strukturella obalansen.Teorin om work life balance granskas och även de förslag som teorin ger för att skapa en mer balanserad vardag.
Avskiljning av ammoniumkväve och fosfatfosfor i reaktiva filtermaterial : skak- och kolonnförsök
In Sweden more than 400 000 private households have not yet sufficient wastewater purification. These effluent is considered as an increasing problem and many onsite purification methods have been studied. In this investigation, the method of reactive bed filters have been tested by column and batch experiments. Five different kinds of filter materials with reactive surfaces have been studied concerning their capacity to absorb ammonium and phosphorus from wastewater. The materials that were examined are Filtra N, wollastonite Filtra P, blast furnace slag and Polonite®.
Balanserad samhällsbyggnad i Eslövs kommun : fördjupning av översiktsplanen för östra Eslöv
This work has been made in cooperation with the municipality of Eslöv and the inventory area is a part of the deepening of the municipality plan of east Eslöv. The aim of the work is to test the principle of balance in the overall planning. Later in the detailed planning process a more detailed calculation is made and a suggestion of suitable measures for compensation is made. Then the method with green area factors can be used. The goal is to balance the negative influence on the environment from the planned impacts to gain a sustainable development of the city.
The principle of balance means that the one responsible for the development also has to compensate for the negative impacts on nature and landscape that comes with the development.
Rösten och kroppen - En studie av några sångpedagogers syn på användande av kroppen i sångundervisningen
Syftet med denna studie är att få mer kunskap om hur man kan använda kroppen i sångundervisning. Jag undersöker vad ett urval av sångpedagoger anser om förhållandet mellan röstorganet och resten av kroppen och hur de tillämpar det praktiskt i sin undervisning. Metoden jag använder mig av är en kvalitativ intervjuundersökning och resultatet visar bland annat att pedagogerna använder kroppen i sångundervisningen genom övningar med rörelser, olika muskelspänning och avslappning. Några av slutsatserna är att det är viktigt med balans mellan anspänning och avspänning, att använda rätt sorts muskler och rörelser samt att använda dessa på rätt sätt.The purpose of this study is to get more knowledge of how you can use the body in voice-training. I examine what a selection of singing-teachers think about the connection between the vocal organ and the body and how they use that knowledge in their teaching.
Studier av utseendet på askan i sodapannor med hjälp av bildanalys
To reduce emissions of carbon dioxide (CO2) Carbon Capture and Storage (CCS) technologieshave been developed. Chemical Looping Combustion (CLC) is a CO2 capture technologywith the CCS framework, and at Chalmers University of Technology in Gothenburg,Sweden, a 100 kW chemical looping combustor has been built.This project aimed to investigate to what degree air can replace helium as the uidizinggas for uid dynamical studies in a CLC cold ow model of the above mentioned 100 kWfacility. Experiments were performed using air and helium separately as uidizing gas andpressure data were obtained, which formed the basis for the comparison. The project alsoaimed to investigate uid dynamics in the uidized bed and study when the risk of sluggingoccuring was greatest. The results were presented in the form of figures and tables dividedinto pressure, concentration and standard deviation of the pressure.The results obtained showed that air as uidizing gas did not create the same uid dynamicsas helium over the entire fuel reactor.
Mätning av abrasivflöde för vattenskärningsmaskiner
The content of the following report is the summarized result of three students
thesis at Blekinge Institute of Technology in co-operation with Water Jet
Sweden AB.
This report will give the reader a description of principles how to measure the
abrasive mass flow in a waterjet cutting system.
The work began with a visit to Water Jet Sweden AB to get a closer look at the
problem. When the analysis of the problem was done the criteria were defined in
the form of demands and desires. The main task of the criteria was to guide the
search for the solution. The work proceeded with an extensive search for
abrasive flow meters along with obtaining information about flow measurement in
general. When the search for abrasive flow meters resulted in nothing all the
efforts were concentrated on finding a principle of measurement that could cope
with the criteria.
Modellbaserad temperaturregleringav partikelfiltrets regenereringsprocess
Due to increasing regulations regarding new diesel vehicles particulate matteremissions the new Scania truck, Scania Euro 6, has been equipped with a particulatefilter. This component effectively stores the particles in the exhaust gas but must becleaned in order to prevent itself from clogging. The filter is cleaned through aprocess named regeneration which is a thermodynamic process in which thetemperature of the filter is raised through fuel supplied to the exhaust gas.The purpose of this thesis is to contribute to the development of improved controlstrategies of the temperature during the regeneration process through thedevelopment of model-based controllers. These controllers are designed in order tohave good performance in stationary as well as automatic regeneration.In order to develop these model-based controllers a model of the system isconstructed. The model is described as a linear thermodynamic grey-box model withflow varying parameters, showing good results in validation.The model provides a simulation environment during the controller design, which isfocused around the development of linear regulators with the exhaust gas mass flowas a scheduling variable whose size determines controllers? mode of operation.
Naturens lockelse : en studie av dubbelhet i Karin Broos bildvärld
The aim of the study has been to examine the duality that I seemed to find in Karin Broos works, primarily on the basis of her renditions of nature. The objective is to study the duality on various plans and to examine which traces of Intertextuality that may exist.In the study of the duality I have taken note of how nature is presented in terms of style and form, as well as that I have seeked cultural references pictorial and symbolic. I have also examined the images with reference to Intertextuality. The following questions has been applied during the work: How is nature produced in the paintings? What place occupies nature in relation to the people, in the works? What is being communicated by nature's participation in the works?As a method, and as a tool for analysis and interpretation of selected works, I have chosen to use Panofskys iconological interpretative method. As a guide to seek relations of intertextuality the theories of Julia Kristeva has been useful, which includes thoughts that new images are created or re-created in relation to other images all the time and in new contexts.As a result of the study I have found some kind of expression of balance, though it did not seemed to look that way from the beginning.
Förlagsbranschen i en dynamisk förändringsprocess En kvalitativ undersökning av tendenser till utveckling inom förlagsbranschen.
The thesis of this Masterpaper has been to analyse what tendencies there might be to distinguish structural alterations in the publishing business today and how they can be understood analytically. The following questions have helped form the principal opinions found in this essay: - What tendencies according to the alterations in publishing business is Piratförlaget representing? -What tendencies according to the alterations in publishing are the literary agents representing? What tendencies regarding the alterations in publishing are the electronic publishing and other techniques related to the publishing business representing? Participants, familiar with the publishing industry in various ways, have been interviewed. The main theory is based on facts from sociology of literature, although Faheys and Randalls Key Scenario, with its driving forces, also provided a great deal of help. In addition, to structure the dynamical publishing business, Peter Senges The Systems Iceberg Model was useful.
Optimering av fackverksmodellering : Ett makro för Tekla Structures
This project is the result of a cooperation between HalmstadUniversity and EABAB. The aim of the project was to create a macro that would help EABAB automate the process of designing steel trusses. When run in Microsoft Excel, the macro imports and processes coordinates from a calculator program. The data is then imported into the Building Information Modelling software Tekla Structures, which creates a 3D structural model of the steel truss.The macro saves much time in the project planning process and also helps minimize the risk of design flaws caused by human error. .
Juridiska processer som marknadsföringsinstrument: En fallstudie kring utformningen av massmedial kommunikation i två EG-rättsprocesser
In public relations and marketing, lawsuits traditionally connote crisis. The purpose of this study is to explore the design and critical considerations concerning risks and opportunities when companies voluntarily initiate lawsuits with the partial aim to get publicity in the mass media. In the following paper, the communicative aspects of two such Swedish cases in the European Court of Justice are studied?a large corporation challenging the Swedish monopoly on gambling and a small company challenging the government on their restrictions for individuals to import alcoholic beverages. The case studies have been conducted through interviews, analysis of legal acts and press articles.
Bioactive peptides in long-time ripened open texture semi-hard cheese
Bovine milk is an excellent source of bioactive peptides. The bioactive peptides are in an inactive state in the protein and are released during enzymatic activity, e.g. during cheese ripening. Specific properties of bioactive peptides from ripened cheese has been reported, e.g. antihypertensive, antioxidative, antimicrobial, immunomodulatory and mineral binding.
En jämförande studie av fluiddynamiken för olika fluidiseringsmedium i en kallmodell av en 100 kW-anläggning för kemcyklisk förbränning
To reduce emissions of carbon dioxide (CO2) Carbon Capture and Storage (CCS) technologieshave been developed. Chemical Looping Combustion (CLC) is a CO2 capture technologywith the CCS framework, and at Chalmers University of Technology in Gothenburg,Sweden, a 100 kW chemical looping combustor has been built.This project aimed to investigate to what degree air can replace helium as the uidizinggas for uid dynamical studies in a CLC cold ow model of the above mentioned 100 kWfacility. Experiments were performed using air and helium separately as uidizing gas andpressure data were obtained, which formed the basis for the comparison. The project alsoaimed to investigate uid dynamics in the uidized bed and study when the risk of sluggingoccuring was greatest. The results were presented in the form of figures and tables dividedinto pressure, concentration and standard deviation of the pressure.The results obtained showed that air as uidizing gas did not create the same uid dynamicsas helium over the entire fuel reactor.
Saltvattenpåverkan i enskilda brunnar i kustnära områden : En undersökning av grundvattenförhållandena och riskerna för saltvattenpåverkan i S:t Annas skärgård, Östergötland
Coastal areas are popular for housing, both for permanent living and holiday houses. At the same time, thin sediments and small storage capacity in the bedrock makes the ground water resources limited. The limited ground water resources combined with too large withdrawals of ground water makes salt water intrusion a problem in many coastal areas. This study examine the risk of salt water intrusion in drinking water supplying wells on the island Södra Finnö in S:t Anna archipelago, Östergötland, Sweden. A calculation of the relation between ground water recharge and withdrawal is obtained to analyze the ground water balance in the area.