Sök:

Sökresultat:

4335 Uppsatser om Water quality - Sida 18 av 289

Ut ur Östersjön genom vassen : beskrivning av övergödningsproblematiken samt optimering av en reningsmetod genom skörd av vattenväxter

This study is based on AgroSeas business idea from environmental problems to valuable resource, with the objective to optimize a method to purify the already eutrophicated Baltic Sea by harvesting water plants, mainly reed. The nutrients will then be recirculated to arable land through residues from biogas production. The amount of nutrients that can be removed by harvesting the biomass depends on the amounts of biomass and the nutrient content of it, which in turn is strongly dependent on the nutrient concentration of the surrounding water. Vegetation suggested in the study for an effective nutrient uptake is helophytes: reed, cattails, reed canary grass, reed sweet grass in shallower water and lemnoideaes: duckweed and nymphaeids in the deeper parts. Competitive species has high purification ability but requires regular maintenance to avoid channeling and overgrowth. Regarding time and method of harvest, effectiveness may be improved by: harvesting plants above the water level and after flowering, a border is kept, harvesting twice a season, a bigger machine and a regular maintenance. This literature has illuminated a major environmental problem and it has been suggested optimizations for a method for cleaning the Baltic Sea through harvesting water plants, but to get a definite answer for the optimal method for each site tests should be carried out, this because many factors determine to what is suitable for each, specific environment. .

Intelligent vattendesign : utformning av Gjutarplan i Kallhälls centrum

The thesis aims to be an informative study for landscape architects and hopes to contributeto an understanding of ways water can be used and managed at sites lacking open, greensurfaces.The title "intelligent water design" should evoke the reader?s thoughts concerning intelligentaspects of water. Text, images and the design proposition give hints about these aspects.In the first part of this thesis, various examples of water design are presented. The chosenexamples are all applicable in urban environments with a high percentage of impervioussurfaces.The second part examines Gjutarplan, an urban square in the centre of Kallhäll, in Järfälla,north of Stockholm. Gjutarplan is first framed in a geographical and historical context.

Övergripande kvalitets och kapabilitets granskning av produktionsprocessen ? en implementering av SPS. : Overall Quality and Capability Study of the Production Process ? an Implement of SPC.

Quality was earlier only an issue for the company?s quality departments but today is the entire organization involved in quality- and improvements work. With the customers in focus, both external and internal, quality and improvement work should be integrated in the daily activities. The management shall state goals and visions together with a policy. Through participation the correct requirements for a successful work are created.With SPC, statistics process control, there is an opportunity to perceive variations in the process and with the correct tools make it stable.

Utvärdering av ett värmepumpsystems prestanda till en HWC-tvättmaskin : Med fokus på fläktvarvtal och köldmedieflöde

This report was performed in order to evaluate a new technological measure and focuses generally on a heat pump system to a HWC-washing machine. The client is Asko Appliances AB, a company well known for its environmentally friendly products. The goal of this study was to improve the energy efficiency of a washing machine by combining a heat pump device to the heater of the wash water, in order to reduce the energy consumed for heating the water. Besides reducing the energy consumption in heating the water, the washing machine was required to meet low noise and short operating time specifications. For that purpose, nine trials in three test series have been carried out.

Hur vuxna med permanent ileostomi upplever sin livskvalitet

Having an ileostomy can affect the quality of life. Quality of life is defined by Siri Naess as being active, relating well to others, having self-esteem and having a basic mood of happiness. The nurse?s task is to focus on the stoma care and work in a holistic way. The aim of the study was to describe how adults with permanent ileostomy experience their quality of life.

Orala hälsorelaterade livskvalitetsinstrument som har använts på äldre individer ? en litteraturstudie

Aim: Through the review of scientific articles, this study aimed to identify which oral health-related quality of life instruments that have been used in studies to measure the oral health-related quality of life in older individuals and the application of such instruments.Method: The study is based on a systematic literature review, where 14 articles have been chosen and evaluated against a checklist. Result: The oral health-related quality of life instruments that have been used on individuals, 65 years and older, are OHIP-49, OHIP-14, OHIP-20 or OHIP-EDENT, GOHAI and OIDP. The instruments are used to examine factors associated with the oral health-related quality of life. Significant associations have been identified, among other things, between the number of teeth in static occlusion, dry mouth and the quality of the dentures, and oral health-related quality of life. Social and cultural associations have also been revealed.Conclusions: Today there exist several well functioning instruments that are used for research purposes.

Låg, medel eller hög kvalitet i förskolan : En studie om hur och varför kvalitèn skiljer sig mellan förskolor

My essay deals with a problem in our society which, in my opinion, has been neglected. Even today in 2011, the quality of schools and preschools is extremely varied. This has been a problem for a long time and not nearly enough attention has been paid to it.In my essay I have tried to understand what it is that causes these differences in quality between preschools. With help from literature and research studies I have examined what quality in preschool really means.My starting point is an account of my own experience at the preschool where I currently work and a description of a study visit I made to another preschool which operates in a very different way to the one where I work. I wanted to investigate what the consequences are for children who grow up attending preschools of different quality.

Handlingsplan för rening av dagvatten från hårt trafikerade gator i Örebro

The main purpose with the project has been to approximate the magnitude of the pollution transport from the actual road surfaces and to get an approximation of the possibility to collect the pollutants to reduce the load to the water and improve the Water quality.The quantity of pollution transport from the most trafficated roads areas in Örebro city has been calculated. Roads whith a traffic exceeding 10 000 vehicle/day. The study has been done with the calculation tool StormTac. Through analysis of traffic loads and road surface, which together with a different kinds of parameters gives an approximation of the pollutant transport.The calculation has included some metals and other substances in the stormwater and has also included the present of suspended solids. Included the overall study, some smaller areas has also been calculated for the possibility to remove pollutants.The work also includes calculation for three different areas for stormwater treatment.

Om vikten av kvalitet. En studie av förändring i svensk hälso- och sjukvård.

The public health care sector has come under increasing pressure to cut down costs, maximize productivity and satisfy patients' needs during the 1990s and onwards. As a way of "getting more for less" quality management has been introduced. Originating in the private manufacturing industry, quality management has a strong focus on productivity and efficiency, aspects which are measured in quantitative terms. However, there are strong concerns that quality management is a means of speeding up the marketization of public health care by introducing core values much different from the ethic and medical norms that traditionally underpin health care organizations.This essay focuses on how quality management has been introduced to, and transformed by, public health care. A theoretical framework based on new institutionalism is constructed, and translation theories are used as a way of illustrating how the medical institutional environment, in fact, changes the concept of quality management.

Vad skapar boendekvalitet? : Analys av småhusområden

The purpose of this thesis has been to signify what creates quality for the dwellers. Bycreating a definition of the term we have showed how well the qualitycriteria?s has been fulfilled in the newly built one family house area Pumpkällehagen in Viskafors.The questions the thesis gives answers to is: What is quality for the dwellers inhousebuilding of today? and How well have these quality aspects been carried out in tracthousing areas? These questions have taken us to our main goal: To describe what qualityfor the dwellers is and how well it has been carried out in a certain area.The literature review is describing what was published before the making of this thesis.From four different publications within the concept of quality an analysis template hasbeen enacted. This template has been used for our case study, but is also supposed towork in future analysis of tract housing areas.Interviews was carried out with the areas architects; Ola Nylander and Mattias Karlsson,as well as the client; Mikael Bengtsson. From these we have gathered their point of viewon the background of the area, as well as their view on the term quality for the dwellers.Our work has brought us to enact nine different quality aspects, which we considercreates quality for the dwellers:? The Non-measurable properties? The rooms relative connections? Sufficient and user-friendly property complements? The property complements connection to the apartment? Location of the apartment and connections to the environment? Opportunities of outdoor activities? Orientation and transportation within the area? The social unity? The cost of the apartment and its form of tenureFrom the case study, using the analysis template, we can state that Pumpkällehagen is avery successfully built area where most of our assessment criteria?s and quality aspectshave been fulfilled.

Smak och konsistens hos ost : en litteraturstudie kring årstiderna och fodrets inverkan

To enjoy the richness of the grazing cows and high yield during the summers, even during the winter, cheese has been the way to store milk for thousands of years. Nowadays yield is high all year around and the cheese production is possible during all seasons. The aim of this paper is to investi-gate how and why the seasons influence taste and texture of pressed and ripened cheese. Milk is composed of proteins, fat, lactose and water but contains also a lot of vitamins. The quality of milk is very important for the final constitution of cheese.

Upplevelser som påverkar livskvaliteten hos patienter som väntar organtransplantation : En litteraturöversikt

Each year, 800 people wait for an organ transplant in Sweden. The development of drugs for organ rejection has evolved over the past 60 years, which has increased the survival of patients who have undergone organ transplantation. The most common organ transplanted is the kidney, liver, lung and heart. There are more studies done on quality of life after an organ transplant, but very few studies on quality of life before organ transplantation.The aim of the study was to describe the experiences of quality of life among patients waiting for an organ transplant.A literature overview of eight articles was analyzed in both similarities and differences. The articles were published between 2002 and 2012.The result is presented in four themes, hope of life, living in uncertainty, the body fails and need for support.

Orala hälsorelaterade livskvalitetsinstrument som har använts på äldre individer ? en litteraturstudie

Aim: Through the review of scientific articles, this study aimed to identify which oral health-related quality of life instruments that have been used in studies to measure the oral health-related quality of life in older individuals and the application of such instruments. Method: The study is based on a systematic literature review, where 14 articles have been chosen and evaluated against a checklist. Result: The oral health-related quality of life instruments that have been used on individuals, 65 years and older, are OHIP-49, OHIP-14, OHIP-20 or OHIP-EDENT, GOHAI and OIDP. The instruments are used to examine factors associated with the oral health-related quality of life. Significant associations have been identified, among other things, between the number of teeth in static occlusion, dry mouth and the quality of the dentures, and oral health-related quality of life. Social and cultural associations have also been revealed. Conclusions: Today there exist several well functioning instruments that are used for research purposes.

Wallenius waters AOT luftrenare

This bachelors thesis was made forWallenius Water AB to develop a basisfor an Airpurifier prototype. Wallenius Water isone of the world's leading environmentaltechnology companies engaged inchemical-free water treatment based onUV-radiation. The thesis aim was toproduce a basis for a prototype that canbe used in three applications:Standalone, RAS systems and ventilationsystems. The work includes anintroductory description of the theorybehind AOP technology based on aliterature review on the subject. Asurvey of products currently on themarket and a product specification hasbeen used as the basis for thepreparation of a number of concepts inthis report.

Skalkonstruktion : Med inriktning mot hållfasthet och dämpning av ljud

The sound part is mainly practical and is dependent on concepts that have been tested through measuring with a sound level meter. The design part is more theoretical and has been verified with CAD models and finite element analysis.With a sound damping hood on the compressor the sound level is reduced with up to four dB. An optimized absorbent for the compressor space gives a reduction with three dB. By using the insulation for the heat water tank as absorbent we can see a sound reduction on the lover octave bands. A reduction like this is elsewhere hard to achieve as at it requires thick absorbents.By changing the today?s insulation to the heat water tank to a form of polystyrene polymer insulation the weight from the heat pump above can be transferred to the stable heat water tank.

<- Föregående sida 18 Nästa sida ->