Sökresultat:
1825 Uppsatser om Hydraulic transport capacity - Sida 32 av 122
SJA?LVFO?RSO?RJNING AV JORDBRUKSPRODUKTER I SVERIGE : Att fo?redra eller ej ur ett klimatperspektiv
Ma?nniskor har de senaste a?rhundradena bidragit till o?kade emissioner av klimatgaser, vilket i sin tur har bidragit till den klimatfo?ra?ndring som idag upplevs. Jordbruket sta?r fo?r en stor del av dessa emissioner och i takt med att befolkningen o?kar sa?tts ytterligare press pa? jordbruket att kunna fo?rse denna befolkningso?kning med livsmedel. Samtidigt o?kar detta a?ven pressen pa? miljo?n.
Effektivare Askåterföring : Kombimetoden
Undersökningens resultat visar att det finns betydande kostnadsbesparingar att göra vid införandet av en ny metod för askåterföring. Den nya metoden medför betydligt mindre transporter vilket leder till ett reducerat utsläpp av koldioxid och andra ämnen som har en negativ miljöpåverkan.I den nya metoden utnyttjas i viss utsträckning timmerbilarnas lediga kapacitet för transport av aska ut till spridningsområdet vilket då ökar chansen till högre lönsamhet för åkerinäringen..
Föroreningstransport i grundvatten : En modelljämförelse
This thesis compares different methods for risk assessment of a creosote contaminated site in Vansbro, Dalarna. In a complementary study the importance of using representative data for calibration and validation of stationary groundwater models is discussed. The time dependency between surface water levels and groundwater levels on the site in Vansbro is evaluated by step response analysis. The results show that the groundwater levels reflect only long-term variation in the surface water levels. Hence the use of such long-term means for calibration and validation of the stationary groundwater models is the only theoretically defendable alternative.As a first step in the comparison of risk assessment methods the degree of contamination is evaluated on the basis of generic guideline values for contaminated soils, developed by the Swedish Environmental Protection Agency.
2440x1220 : såga, sätt samman
I have been inspired by the Do It Yourself movement. DIY builds on the creativity of the individual, one?s capacity for initiative and one?s desire to realise one?s ideas. I have been inspired by sheets of pattern paper used in the manufacture of clothing, and my line of furniture is based on two-dimensional patterns of furniture. The sections of the pieces of furniture are printed on and relate to a standard sheet of plywood.
Menstruationscykelns och p-pillers påverkan på den fysiska prestationsförmågan
Effects of Menstrual Cycle and Oral Contraceptives on Sport Performance During the menstrual cycle, there is a variation of the female steriod hormones estrogen and progestogen. These hormones has mainly reproduktive functions, but do also affect other physiological systems, which may have an influence on athletic performance. The use of oral contraceptives among female athletes matches the use among the general population. There is a concern among female athletes and there coaches weather oral contraceptives can affect the performance. The purpose of this litterature review is to determine the effect of the menstrual cycle and the use of oral contraceptives on athletic performance.
ALK?RR - K?LLA ELLER S?NKA F?R V?XTHUSGASERNA METAN OCH LUSTGAS? Empirisk studie av v?xthusgasutbyte i kustn?ra alk?rr p? den svenska V?stkusten.
Due to global climate change and the rising levels of greenhouse gases (GHG) in the atmosphere, the interest for seeking solutions for mitigation has increased. While much attention has been directed towards technical solutions such as carbon capture and storage (CCS), biogenic carbon sinks has also garnered significant attention. Previous studies have shown that coastal ecosystems such as seagrass meadows and mangroves have a much greater capacity for storing carbon (C) compared to terrestrial ecosystems. That raises the question if other coastal ecosystems, such as coastal wetland forests, that previously haven?t been considered as blue carbon habitats also contribute to coastal carbon sink capacity.
Ursäkta, var är toaletten? Patienters upplevelse av att få en tillfällig loop-ileostomi nedlagd efter rektalcancerbehandling
Introduction: Reversal of a temporary loop-ileostomy is the final step after a long treatment for rectalcancer, an event that the patient has been looking forward to for a long time. Studies have shown that patients often have a significant impact on the bowel function after reversal of the stoma.Aim: To describe how the patient experienced the first time at home after reversal of a temporary loop-ileostomy due to rectalcancer. Method: Qualitative semi-structured interviews, with 15-20 patients who have undergone reversal of a temporary loop-ileostomy due to rectal cancer, will be conducted. The interviewes will be analysed using qualitative content analysis according to Graneheim & Lundman (2004). The patients will be recruited from the colorectal unit at Sahlgrenska University hospital/Östra and from the surgical unit at Kungälvs hospital.
PLA som metod för detektion av bornavirusinfektion hos katt
A method for intra vitam detection of bornaviral infection and diagnosis of bornaviral dis-ease in the cat is currently lacking. The aim of this work was to explore the possibility of using the proximity ligation assay (PLA), with its capacity of recognizing femtomolar con-centrations of a protein, as a method for detection of the minute quantities of antigen and antibodies that are present in the tissues and body fluids of a bornaviraly infected cat. For this purpose reliable comparative assays, in the form of an ELISA and an IFA, had to be established. When this proved impossible within the time frame of the project, the aim of the study had to be abandoned, further underscoring the need for improved means of detec-tion of bornaviral antibodies and antigen..
Predicting spawning bed erosion and longevity : a case study in tributaries to river Vindelälven, northern Sweden
Timber floating operations in Scandinavia during the 19th and 20th centuries has contributed to severe negative impacts on riverine ecosystems. Increase in water velocity and lack of stream bed heterogeneity as a result of stream channelization lead to increased bed load transport. Since availability and recruitment of new suitable spawning substrate in Scandinavian watercourses is sparse, spawning habitats for salmonids has become a scarce commodity. Lately, increasingly more attention has been given to the recreation and improvement of brown trout (Salmo trutta) spawning habitats in restoration projects. While much of the research on spawning habitat has been focused on evaluation of the influence that the constructed spawning grounds have on fish populations, few studies have been conducted to evaluate the persistence of these constructions over time.
I evaluate erosion of constructed spawning beds as an effect of sediment transport attributable to water discharge.
Är avståndet för transport av spannmål en kritisk faktor i framställningen av etanol till framtidens bränsle?
Förr eller senare minskar tillgången på råolja och därmed bensin och diesel i världen. Då måste vi människor finna andra drivmedel för att klara våra transportbehov och andra behov som är beroende av drivmedel. Förutom detta finns det behov av åtgärder som minskar emissioner av CO2 till atmosfären. Etanol som drivmedel är relativt nytt, och marknaden är potentiellt mycket stor. Agroetanol AB är en etanolfabrik i Norrköping som använder spannmål som råmaterial.
Stressad i knoppen, inaktiv i kroppen? : en tvärsnittsstudie om förändring i fysisk aktivitet vid stress i vardagen
Syfte och frågeställningarSyftet med studien är att undersöka om det finns några skillnader i fysisk aktivitet beroende på upplevd stress. Undersökningen avser att jämföra en tidsmässigt lugn respektive stressig vecka. För att besvara syftet undersöks om deltagarna når upp i rekommendationerna för fysisk aktivitet samt om det finns en skillnad i aktivitetsgrad mellan domänerna. MetodStudien är en tvärsnittsstudie där enkäter används för att besvara syftet. Enkäten är egenkonstruerad och uppdelad i två delar, där delarna representerar en vanlig lugn vecka och en vanlig stressig vecka. Den upplevda stressen är utgångspunkt, den fysiska aktiviteten undersöks genom frågor som berör intensitet, duration och frekvens.
Framtagning av en förebyggande åtgärd mot kriminalitet vid lastbilstransporter
Boberg at Scania CV AB. The purpose was to investigate the technical and customer oriented possibilities for the development of a transport security measure against cargo crime, which is a growing problem in Europe. The main goal was to develop a concept that is possible to implement in the Scania CV AB Fleet Management System. Another goal was to develop a security model that will be used as a tool during Scania CV AB?s future development projects of transport security concepts.The work was divided into three main parts: a background study, handling cargo crime, transport security Scania CV AB trucks and market analysis, a stakeholder investigation including a questionnaire and interviews, and a concept development session.
Light Explosion : rekonstruktion av en akrylarmatur
This report presents thesis of Liisa Kokkonen in collaboration with Muovikilpi Oy.The project?s goal is to find a new construction for an existing lamp made of acrylic. Form and design retains and the manufacturing occurs at Muovikilpi Oy. The project contains the new construction and manufacturing of the lamp and also a proposition for a set with floor and wall lamp. The paper gives an outline of acrylic as material and how it reacts with light.
Externhandel och mellankommunalt/regionalt samarbete utifrån ett hållbarhetsperspektiv med fokus på delregionen Södertörn
In Sweden according to the planning and building Act municipalities have planning monopoly. The question about shopping centres in the outskirts of cities is a regional issue, because they attract customers from a large area. Municipalities often find it hard to assert themselves against large commercial companies when it comes to their establishing new retail outlets on the outskirts of cities. Without a regional co-operation there is a risk that municipalities can be played up against one another, so that more and more companies are given permits without the municipalities having taken the strategic consideration necessary for a long term sustainable development. The focus in this work is on four municipalities in the Södertörn region (Södertälje, Botkyrka, Huddinge and Nynäshamn).
Analys av spänningsstabilitetsberäkningar i det svenska elsystemet
Numerical simulations play a vital role in both static and dynamic stability assessment of electric power systems and the foreseeing of voltage collapse. Simulations performed by Svenska Kraftnät(SvK) are mainly done in the specialized voltage collapse predicting software tool, SPICA and the more all?purpose software tool, ARISTO.The grid operators at SvK use SPICA to predict the maximum transfer limit at specified sections (in this report the section in concerns is the southern part of Sweden i.e. interface1 4). SPICA is mainly used as an online application by using actual states from the grid, these states update every quarter of an hour.This thesis is a continuation of the master thesis SPICA ? ARISTO JÄMFÖRELSE by Jakob Katzman and Johan Fält.