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2170 Uppsatser om Soil water balance - Sida 66 av 145

Störs laxens lekvandring i en kraftverkspåverkad älvsträcka? :

The upstream spawning migration of Atlantic salmon (Salmo salar) at the confluence area between the power-station outlet and the bypass-channel in river Umeälven (flow 430 m3s-1) was compared in 2004 and 2005, two years with different experimental flow-regimes. In 2004 the water flow in the bypass-channel was altered during the day with increased flows during the nights while the water flow in 2005 mainly was altered between the weekdays and weekends. Salmon showed altered migratory behaviour in this confluence area, assessed with telemetry (n=116) and echo-sounding, with up- or downstream responses depending on flow-changes in both the bypass and the power station outlet. Increased turbine flow through the power-station generally attracted salmon into the tunnel outlet area while increased spill-flows facilitated salmon to enter the bypass. Echo-sounding in the confluence area showed an increased swimming activity up- and downstream due to time in the day and flow-rates through the tunnel outlet. No changes in activity could be detected due to increasing or decreasing flow through the hydro-power facility.

Effektivisering av energianvändningen i en förskola

This rapport contains an examination of the energy consumption of a kindergarten, which areas that have the largest impact on the energy consumption and what can be done to reduce those areas in ways that are relatively easy and profitable. It is also analyzed if it is possible to reduce the energy consumption from today?s consumption to a consumption that fulfils the demands placed on low energy houses by FEBY.The focus has been on reducing the energy consumption of the areas ventilation, heating system and hot water system, since those seemed to be the easiest ones to affect and since the building is quite recently built.There are different kinds of ventilation systems, at the moment the building have a CAV-system, which means that the ventilation is too high during large parts of the day. There are different ways to manage the ventilation system, for example presence detection, humidity sensors, CO2 sensors, temperature sensors and season adjustment. Many of those are in the end dependent on CO2 sensors to guarantee a good indoor climate, therefore the focus have been placed on this system.

ST-läkares identitetsarbete: En studie av läkare under specialiseringstjänstgöring

The results from 13 interviews and one opinion poll answered by resident physicians were interpreted as stories about identity as primary material for this thesis. The resident physicians stress the importance of considering whether their work primarily concerns curing people from diseases or if the process of working with sick people also includes how to handle the pressure of work, either by adapting to it or changing it, and the search for balance between work and private life. Residents separate themselves from older physicians by saying that younger physicians accentuate empathy to a greater extent while older physicians emphasise a high work load. Identity seems to effect how the residents perceive and relate to their work, themselves as residents and different types of patients..

Kålgallmygga, Contarinia nasturtii Kieffer : en växtskadegörare på kål

The purpose of this paper is to examine what problems cabbage growers have with the Swede Midge. The last few years the Swede Midge, Contarinia nasturtii, has become a larger problem for cabbage growers in several countries in Europe as well as in Sweden. In Canada the problems are so severe that the midge is classified as a quarantine pest and therefore certain rules have to be followed. I have collected facts of the biology, host plants and reproduction of the Swede Midge, as well as the growers experiences and the occurrence of the midge in Canada, Europe and Sweden. The Swede Midge is hard to control because of its short life cycle and the larvae are protected between the heartleaves of the plant. When the larva feeds on the growth point the plant becomes distorted, in some cases several heads develop or none at all. When the midge infests spring rape its flower buds become undeveloped and rosette like.

Development of green space in Dar es Salaam, Tanzania

In Dar es Salaam, as in many cities in developing countries, green areas are decreasing due to the fact that the growth of buildings, infrastructure and services has become a priority. As the population increases more buildings and infrastructure are needed and much of the building activity takes the form of uncontrolled settlements, which encroaches the public green space. Dar es Salaam has approximately three million inhabitants, of which about 70 percent are living in informal settlements. The aim with this study is to make a design proposal for a park and recreation area where the Msimbazi river basin in the centre of Dar es Salaam is today. The basin consist of a few playing fields, footpaths and some urban farming, but apart from this it mostly consists of unused grasslands, swamps and forests. Because it is an unsafe place and badly connected to the rest of the city infrastructure, it has become a barrier. The annual flood combined with the constant still shallow water creates a good breading ground for malaria mosquitoes.

Analys av off-design prestanda för ett absorptionskylsystem

This master thesis project at KTH is performed in the Mechanical and Aerospace Engineeringdepartment at University of Florida (UF). The thesis is a small part of a gas turbine researchproject where a vapour absorption refrigeration system (VARS) and a high pressure regenerativeturbine engine (HPRTE) are integrated together. The main objective is to build a computermodel of the VARS. The computer model is supposed to be used to analyse the off-designperformance of the VARS and should also be easy to integrate as a subroutine in a more complexsystem model. To model the VARS some knowledge of the absorbent/refrigerant mixture had tobe well known, in this case a mixture of ammonia and water.

Taket och botten: tre amerikanska remakes av japanska förlagor

Det kommer konstant ut amerikanska nyinspelningar av andra länders filmer. Vad är det som skapar behovet av nyinspelningar? Vi har analyserat och jämfört tre japanska skräckfilmer med amerikanska nyfilmatiseringar (s.k. ?remakes?) för att försöka förstå vad det finns för kulturella särdrag i respektive länders gestaltning av filmberättartekniska konventioner av rum och tid och skillnader i kunskapsnivå om filmens händelser mellan protagonist och åskådare..

Växthusvävens fukttransmission ? Hur struktur och materialval påverkar växthusvävens fuktgenomsläpplighet

Växthus används för att ge ett bättre odlingsklimat åt grödor och växter. För ytterligare förbättring av förhållandena används växthusvävar som exempelvis kan reglera temperatur, fuktighet och ljustillförsel. Väven som behandlas i denna rapport är en så kallad energiväv som främst har till uppgift att minska energiåtgången vid uppvärmning.När väven är fördragen nattetid, ökar luftfuktigheten då grödorna avger fukt dygnet runt. Fukten kan kondenseras mot energiväven, vilket gör att det bildas droppar på väven som kan falla ned på växtligheten. Den höga luftfuktigheten kan medföra svampsjukdomar och i övrigt också bidra till att tillväxten avstannar.

Balanskravet : ? En studie över hur två kommuner med olika ekonomiska förutsättningar hanterar balanskravet

För att komma till rätta med kommunernas och landstingens mångåriga underskott i början av 1990-talet, infördes god ekonomisk hushållning år 1992 för att skapa balans mellan inkomster och utgifter. Då det inte finns någon tydlig definition på god ekonomisk hushållning infördes balanskravet år 1998 som ett komplement. Balanskravet innebär att intäkterna ska vara större än kostnaderna, det vill säga att ekonomin ska vara i balans. Grundtanken och syftet med införandet av balanskravet är att varje generation ska bära ansvar för de kostnader som den generationen beslutar om och konsumerar samt skapa en långsiktig stabil utveckling av ekonomin. Om en kommun inte får ekonomin i balans och redovisar underskott ska det negativa resultatet enligt 8kap 5a§ Kommunal Lagen kompenseras inom tre år om det inte föreligger synnerliga skäl och kan därmed frångå en budget i balans.

Markanvändningens förändring i vardagslandskapet : en analys av utvalda delar i Wessmantorp

During the last 100-200 years people have change their way of living and the condition and need for survival is no longer depending on the agricultural work. The forestry has replaced the farming and a lot of the natural pastural have been lost. Wessmantorp in the north part of Skåne is an old place for forestry and farming where people have been living for several hundred years. Studies of selected parts of the everyday landscape, that earlier have been settlement with small crofter?s holding, show that the changes in the landscape mostly depends on the human factor and that a lot of the cultivable soil have been replaced with spruce. Some of the areas, which the earlier dwellings were placed, still contain some remains of old house foundations and stone fences and can regard as being of an historical value. The studies provide the reader with a short background, the place as it is today and the changes of the land use in Wessmantorp.

Utomhuspedagogisk inlärning : För elever med koncentrationssvårigheter

The overall aim with this study is to elucidate outdoor education as an education method and on the basis of that illustration to examine active educators vision on it as a way to motivate students' learning. This study is based on a literature component and a qualitative study through interviews five teachers.The results of the interviews show how to interpret the motivation and how to work with students' motivation. As well as outdoor education as part of the activity.  The interviews show the importance of outdoor education can be to increase students'motivation for learning. They also show the importance of outdoor education is for student learning and test scores have shown the effectiveness of student learning through outdoor education.

Ett gårdsbesök : ger besöket någon kunskap om mjölkproduktion?

Aquatic organisms are usually not exposed to single substances but rather to mixtures of toxicants in streams located in agricultural areas. The transport of pesticides used in the agricultural area in Sweden is monitored with continuous environmental supervision every year. During 2002-2008 an average of 10 pesticides were found in each sample and 40% of the samples contained substances with concentrations higher than the Water Quality Standards. Chemical risk management is normally based on single-test evaluations. A problem when assessing mixture toxicities is that the constituents and concentrations of pollutants in the environment vary greatly.

Produktivitet vid stubblyftning :

Stump wood was used between 1850 and 1950 for production of tar and as firewood. In the 1950s the use decreased because of the introduction of the cheap fossil oil. In the 1970s stump wood became an interesting issue again as a raw material for the pulp industry. Stump lifting has today become a possible source for bioenergy. The objectives with this study were to investigate the productivity of stump lifting and stump extraction, and to analyse the economy.

Jord i portföljen : jordbruksmark som en del av en investeringsportfölj

People who invest capital in promising projects as a profession are called venture capitalists. They are constantly looking for new investment opportunities. Recently, media have observed a growing interest in forest land as capital investment. This is because several fund and investment company market the possibility of safe return through investment in woodland, both in Sweden and abroad. When an investment in forests is seen as an acceptable investment option, focus turns to nearby areas, namely agricultural land.

Planering och gestaltning för träning och motion

Aquatic organisms are usually not exposed to single substances but rather to mixtures of toxicants in streams located in agricultural areas. The transport of pesticides used in the agricultural area in Sweden is monitored with continuous environmental supervision every year. During 2002-2008 an average of 10 pesticides were found in each sample and 40% of the samples contained substances with concentrations higher than the Water Quality Standards. Chemical risk management is normally based on single-test evaluations. A problem when assessing mixture toxicities is that the constituents and concentrations of pollutants in the environment vary greatly.

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