Sök:

Sökresultat:

1618 Uppsatser om Terrain transport distance - Sida 15 av 108

Förslag till modell av kemikaliespridning i mark anpassad för användning vid räddningsinsats - Kemspill Mark 4.0

After emergencies involving chemical spills it is of great importance that correct measures are taken with short notice, both for the security of people and in order to minimize future environmental consequences. The RIB-unit at the Swedish Rescue Services Agency initiated this study, the aim of which is to propose changes to the existing chemical transport calculation tool: Chemical Spill 3.4, included in RIB - Integrated Decision Support for Civil Protection, so that it can be used for decision support as well as in preventive work. A rough estimation of chemical transport in the subsurface is considered being of great importance when making decisions during emergency response operations.The proposition presented in this report is a non site specific chemical transport model which is designed to give a rough estimation of NAPL flow in homogenous isotropic soil shortly after an instantaneous release. The model can be used at two levels; both in situations without access to information on subsurface properties, and with more accuracy in situations with knowledge of the included parameters. For that reason the user can choose among predefined alternatives or assign the parameters a numeric value to increase the quality of the model output.

Studieavbrott vid distansutbildning

Uppsatsen är producerat och examinerad under 2007.

Produktivitet och kostnader vid skörd och transport av skogsbränsle från klena gallringar

Syftet med denna studie var att undersöka ett maskinsystem för uttag av trädbränsle i klena gallringar i norra Västmanland och södra Dalarna för Mellanskog. Genom driftuppföljningsdata kunde produktiviteten och kostnaderna för maskinsystemet beräknas, samt kostnaderna för sönderdelning och transport och hur dessa förändras med transportavståndet till industri. Resultatet visar att skördarens produktivitet är beroende av storleken på skördad medelstam, samt att skotarens produktivitet sänks med ett ökat skotningsavstånd. Den totala kostnaden för drivningsarbetet för ett medelobjekt (sett till maskinsystemets produktivitet) i denna studie var 178 kr/m3f inklusive kostnader för flytt, planering och tillägg för vinst. Om man bortser från dessa kostnader uppgår kostnaden för skördaren till ca 88kr/m3f och kostnaderna för skotaren till ca 61kr/m3f. Att enbart sönderdela materialet kostar 58 kr/m3s och kostnaden för transport beror på tranportavståndet, ett längre avstånd innebär en högre kostnad.

Stjälkröksvamp (Tulostoma brumale) : stora eller små individer?

The spatial population structure of the saprotrophic basidiomycete Tulostoma brumale was investigated at a site in south eastern Sweden. Sporocarps were mapped and collected, and somatic incompatibility tests between mycelial cultures cultivated from the sporocarps were used to identify genets. Calculations of the size and numbers of genets and their distribution were performed. The spatial distribution of the tested sporocarps and the identified genets are presented graphically in a grid. The total number of identified genets within the investigated area (1210 m2) was 27 based on 48 tested sporocarps.

Katalog vs Nätbutik ? en studie om produktpresentation av modevaror inom distanshandeln

The survey Distanshandeln idag 2005, made by the Swedish postal service, tells us that web shops started to pop up in the 1990´s and began competing with the catalogue sells in the end of the decade. Ten years ago, it was said that the web shops would take over the distance trade market. Today we know that did not happen. Internet shopping accounted for 4, 2 % of all distance shopping in Sweden last year. Our inquiry is guided by the observation that the catalogue is still in use and moreover, it seems to have changed very little from when we were kids.

Närsalter och bottenlevande organismer i Mönsteråsviken

The focus of this study was to examine the nutrients and benthic organisms of the bay ?Mönsteråsviken?, which is influenced by eutrophication. The purpose was also to look at an interesting gradient forming in the bay, namely the distance from the river outflow of Lillån. At 18 sampling sites in the bay samples of water, sediments and benthic organisms were collected in late April of 2011. The water was analyzed for nitrate, phosphate and chlorophyll.

Varför miljöredovisning? : en undersökning av lastbilstransportbolag

Today?s political debate on environmental issues and environmental thinking, alongside the Swedish presidency of the EU and Climate Conferences shows that the environment is an important topic. Environment is important, not only in politics, but also for companies and the demand of environmental strategies and environmental reports has increased. This leads to an increased pressure on firms to begin to report on environmental concerns and to create active systems for environmental thinking.The aim of the present study is to examine why firms in the transport sector, mainly lorry transports, reports environmental aspects and what drives these companies to create these reports.Based on stakeholder and institutional theory we aim to examine to which extent stakeholders affects the environmental accounting and reporting. We also aim to explain how the organization is influenced to incorporate external and societal environmental procedures.

Hur långt bär cykeln? : Gång och cykling i Västerbottens län - en studie av pågående arbete med regional gång- och cykelplanering

The craft of planners are planning for a better future. Knowledge about climate change, environment, health and availability effects the trend towards less car dependent societies in favour of public transport and active transport like walking and biking. This study takes place in Västerbotten, one of Sweden?s most north provinces with a population of 260 000 inhabitants. It is a sparsely populated area with two dominant cities, the other municipalities are largely unpopulated.

Marknadsföring som konkurrenskraft under julhandeln : En studie av köpcentrum i Stockholmsområdet

Shopping is one of the most important social activities today and the majority of all shopping takes place in Shopping Centres. The number of Shopping Centres has increased and it is important to attract visitors by using the right marketing strategy. Christmas is an extra important period because the turnover normally increases three times in December compared to a ?normal? month. The purpose of this study is to analyze the marketing of Shopping Centres during the Christmas period, and analyze how this marketing contributes to the visitors? choice of Shopping Centre. This is a positivistic study that combines a quantitative and a qualitative method.This study concludes that range of stores and distance are the most important factors when a visitor decides which Shopping Centre to visit. During Christmas it is important to create a Christmas feeling, preferably made by offering decorations and music.

Nya tillämpningar för utandningstest kopplade till Kibions diagnostikinstrument IRIS ®

The focus of this study was to examine the nutrients and benthic organisms of the bay ?Mönsteråsviken?, which is influenced by eutrophication. The purpose was also to look at an interesting gradient forming in the bay, namely the distance from the river outflow of Lillån. At 18 sampling sites in the bay samples of water, sediments and benthic organisms were collected in late April of 2011. The water was analyzed for nitrate, phosphate and chlorophyll.

Språk och utveckling eller språkutveckling och identitet

Msc in Logistics and Transport Management.

Påverkar polariserande solglasögon avståndsbedömningen?

Syfte: Denna undersökning utreder om polariserande Suncovers skulle kunna påverka djupseendet.Metod: Mätningarna genomfördes på tre meters avstånd med en modifierad variant av Frisby Davis Distance Stereotest och med jämförande mätningar mellan bruna Suncovers från Polaroid, gråa Suncovers från Polaroid och utan solskydd. Undersökningarna gjordes på 36 frivilliga försökspersoner som alla hade samsyn och inte mer visusskillnad mellan ögonen än 0,1 med en synskärpa över 0,9 Snellen-visus.Resultat: Utan solglasögon var medelvärdet på stereoseendet för försökspersonerna 16,0´´ ± 10,7´´. Med polariserande Suncovers blev det en försämring, denna försämring var 2,8´´ med gråa Suncovers (p = 0,08) och 5,4´´ med bruna Suncovers (p = 0,02).Slutsats: Med de bruna Suncovers fanns en signifikant försämring i jämförelse med utan Suncovers även om skillnaden var liten. Att det är en större påverkan med bruna Suncovers än med gråa kan möjligtvis bero på att de bruna till skillnad mot de gråa absorberar våglängderna ojämnt över det synliga spektrumet..

Produktutveckling av kylväska för transport av vacciner i svåråtkomliga platser

Examensarbetet har genomförts i samarbete med konsultföretaget i3tex AB i Göteborg samt med Aircontainer Package System Sweden AB (APS) i Stockholm. APS utvecklar och säljer standardiserade och kundanpassade förpackningslösningar för att transportera temperaturkänsliga produkter. Ett av APS önskemål är att i framtiden kunna erbjuda fler alternativ av kylväskor. Ett av dem är en kylväska som skulle kunna användas vid transport av vacciner i svåra miljöer eftersom det idag inte finns med i deras utbud. Examensarbetet fokuseras därför på att ta APS befintliga blodväska som referens och att ta fram ett nytt koncept för transport av vacciner, samt utveckla ergonomiska egenskaper för att underlätta och optimera användningen för de som jobbar i fält på organisationer som t.ex.

Skogs- och energibolagens attityd till förnybara drivmedel vid upphandling av transporttjänster i norra Sverige

Sweden's government is dedicated to the goal of having a vehicle fleet that is independent of fossil fuels by 2030. Achieving these goals requires, among other things, new types of fuel that give lower net emissions of carbon dioxide. The present market includes stations offering lowlevel blends of renewable fuels in conventional diesel as well as some stations offering renewable fuels only. The purpose of this study is to survey purchasers? attitudes to the use renewable fuels in roundwood and bioenergy transport in forest- and energy companies. The study was based on qualitative interviews through a combination of face-to-face meetings and telephone interviews with each sample group. The total number of respondents was ten (10), consisting of five (5) from forest companies and five (5) from energy companies. Transport service purchasers were generally positive to renewable fuels and considered these necessary in the future.

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.

<- Föregående sida 15 Nästa sida ->