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7891 Uppsatser om Retention time - Sida 2 av 527
Näringsämnesretention i fyra nyanlagda våtmarker i Falkenbergs Kommun
This study evaluates the retention of nitrogen and phosphorus in four newly constructed wetlands in the municipality of Falkenberg, Sweden. The four wetlands have been selected because they have been specifically constructed with the aim to reduce nitrogen and phosphorus in farming areas. The process of selecting the specific wetlands has been done in collaboration with the county administration in Halland. Through field studies in collaboration with the landowners where the wetlands are sited, the areas that provide the wetlands with water were determined. The size of these drainage areas were determined in a GIS computer program. The type of land use within the drainage areas was also determined.
Förslag till kväverening i Forsåsystemet genom våtmarksetablering
The last hundred years humans have drastically changed the amount of available nitrogen in nature. Today human activities release twice as much available nitrogen as all natural processes are doing together. We also have degraded nature´s possibilities to take care of nitrogen through the draining of wetlands and straightening of rivers. In order to regain the potential of nitrogen retention in the water systems there now requires a reshape of the landscape we live in. A planned expansion of the mining activities in Garpenberg, Dalarna, would double the content of nitrogen in the waters below the mine.
Naturhänsyn på slutavverkade hyggen i Östergötlands län.
95% of the productive forest land in Sweden are now being exploited for forestry. The new Forestry Act of 1993 equate the goal of production and the environmental goal which means that the objective for forestry is a sustainable yield, while the biological diversity must be preserved. Recent years results from the inventories of the Board of Forestry show declining trends in how nature conservation aspects taken into consideration at the felling sites.The aim of this study is to investigate what happends with the nature consideration taken at felling sites in the long run. 20 final fellings in the county of Östergötland were re-inventoried 7-9 years after final felling. These felling sites had previously been inventoried before final felling (P0) and one year after final felling (P1) in the inventory Polytax by the Board of Forestry.
Har antalet naturvärdesträd i Sverige förändrats mellan 1999-2009?
Forestry and forest products are vital components of the Swedish economy but the forest is also important for recreation, hunting, out-door life and conserving biodiversity. The Swedish Forest Act has two equally important objectives, production and environmental protection. Polytax is the Swedish Forest Agency´s inventory programme which monitors progress toward the two objectives in connection with regeneration fellings. It includes data on environmental protection measures taken in connection with regeneration fellings. 30 § of the Swedish Forestry Act and related regulations specify the demands for conserva-tion of nature.
Effekten av uteblivna miljöersättningar för anläggning av våtmarker
Environmental subsidies are used as incitements to farmers for development of sustainable land use. In 2014, applications for funding constructed wetlands were not available. This paper examines the environmental consequences of this lack of funding in one intensively cultivated region Skåne län, southern Sweden.A review of wetland applications between year 2007-2013 show that the average rate of applications has been 31 projects per year with a wetland size of 4,48 ± 1,61ha per project (mean±95% CI). Based on interviews, the result suggests that the lack of funding in one year leads to between 102 and 140 ha of constructed wetlands that is not built. This correspond to a total loss of increased nitrogen retention capacity between 6,0 and 91,7 tons/year and a loss of increased phosphorus retention capacity between 0,17and 2,1 tons/year in the drainage basins of Skåne.Further the interviews show that continuity of environmental regulations and funding is important for the farmers? interest in environmental measures.It is concluded that the total loss of increased retention capacity is small compared to the annual transport of nitrogen and phosphorus in the drainage basins.
Modellstudie av föroreningsretention i Bäckaslövs våtmark : Tillämpning av modellverktygen MIKE SHE WET och MIKE 21
During the nineties, ecological handling of urban storm water became very popular in Sweden. Together with Chalmers University of Technology and two Swedish communities, DHI Water and Environment has been doing research of storm water ponds and constructed wetlands. This thesis work is a part of that research project. The work has been applied at the Bäckaslöv storm water treatment plant in Växjö, Sweden. The plant consists of one storm water pond and a downstream constructed wetland.
Näringsretention i återskapad våtmark på betesmark : studier av en mad vid Bornsjön
It is important to construct or recreate different types of wetlands and study their retention of nutrients, since knowledge of their effectiveness in this matter is poor. In 2003 a wetland was constructed on an old meadow on the western shore of Lake Bornsjön in central Sweden. The main purpose of the wetland was to reduce the amount of phosphorus entering the lake, which is the back-up water supply for Stockholm when the city cannot obtain water from Lake Mälaren. Large areas around Lake Bornsjön consist of agricultural land and the nutrient concentrations in the inflows to the lake are usually relatively high (approx. 1 mg/l total nitrogen and 0.05-0.1 mg/l total phosphorus).
Scintigrafisk undersökning av esofagusmotilitet hos häst :
Scintigraphic examination of the esophagus has for some time been the method of choice for the study of motility dysfunction in humans. The method has not yet been described for horses hence the lack of reference values for passage time for a bolus through the esophagus in healthy subjects. The purposes of this study were to measure passage velocity and time for a bolus to pass through the esophagus in healthy subjects, as well as to evaluate the reproducibility of the method. Eight warm-blooded trotters were used in the study. The horses were sedated with a low dose of Acepromazine prior to onset of the study.
Att beh?lla bankanst?llda - En kvalitativ studie om employee retention utifr?n ett identitetsperspektiv
Svenskar byter jobb allt oftare och denna r?rlighet p? arbetsmarknaden ?r kostsam f?r arbetsgivarna. D? det har visat sig att frivillig personaloms?ttning i m?nga fall skulle kunnat kunnat motverkas av arbetsgivaren ?r det relevant att utforska hur organisationer kan arbeta med bibeh?llandet av personal. Ett samlingsbegrepp f?r ?tg?rder som syftar till att fr?mja bibeh?llandet av personal ?r employee retention.
Do retention trees affect the composition of ectomycorrhizal fungi? : a comparison between clear-cuts areas with and without retention trees in pine forests
Under det senaste årshundradet har de svenska skogarna genomgått en omfattande förvandling, från mer eller mindre naturligt dynamiska till hårt brukade skogar bestående av monokulturer av tall eller gran. Denna förändring har lett till en minskning av den biologiska mångfalden, att många arter som är beroende av skog har minskat radikalt och hotas av utrotning. Som ett försök att främja variation, biologisk mångfald i allmänhet och förhindra minskningen av rödlistade skogsarter introducerades i början av 90-talet en viss naturvårdshänsyn i brukade skogar. I den här studien utvärderas den påverkan som kalavverkning har och den betydelse hänsynsträd har på artsammansättningen och förekomsten av ektomykorrhizasvampar (EMF) under de första 20 åren efter kalavverkning. Studien utfördes genom extrahering och identifiering av svamp-DNA från jordprover tagna på kalavverkade ytor, nära hänsynsträd och i gammal skog i ett begränsat geografiskt område i norra Sverige.
Hydrolys av primärslam för förbättrande av biologisk fosforreduktion vid behandling av hushållsavloppsvatten [Hydrolysis of primary sludge for enhancement of biological phosphorus removal in household wastewater]
Hammarby Sjöstad is a new district of southern Stockholm built with focus on reduced environmental impact by recirculation of materials and sustainability. The environmental goals aim to cut the water consumption by half and a separate storm water treatment. Thus, the wastewater will be more concentrated and will originate from the households only. The Sjöstad project includes the idea of a local treatment plant for the household wastewater. To evaluate this possibility, Sjöstadsverket, an experimental treatment plant was constructed.
Symptom patienter upplever efter dagkirurgi till följd av anestesi
Ambulatory surgery is common and develops alongside surgery and anesthetic methods. Time admitted is short and aftercare takes place in the home environment.Objective: The aim of the study was to investigate which symptoms patients experience after ambulatory surgery related to anesthesia. Furthermore how strongly symptoms affect the patient. Symptoms appear as a result of anesthesia and surgery and can therefore be interpreted as nursing induced suffering.Method: Participants were recruited at ambulatory clinics at a Swedish university hospital spring, 2015. Prior to the study permission was granted from the clinic managers. The study is a quantitative descriptive longitudinal study. Data collection forms were administered and data collection was performed by phone.
Gröna tak som del i ett hållbart stadsbyggande
Green roofs have seen a revival in the society of today. They provide many functions
of which both society as a whole and the individual can take part. In particular
extensive green roofs, that requires little or even zero maintenance, provides very
valuable functions. Green roofs affect our environment and our economy in a
positive manner as well as the physical expression of buildings.
In this bachelor thesis the impact of green roofs on society has been examined
throughout literature studies. The result as a compilation of contemporary research
in this field is presented together with a discussion about the use of green roofs in
general.
The two major arguments for an extended use of green roofs are, the high
stormwater retention capacity and the cost-benefits seen over time compared to a
conventional roof.
Övertänjd urinblåsa- redan före operation? En observationsstudie
Introduction: Urinary retention is a common postoperative complication associated with bladder distension. Permanent damage to the bladder affects the patient?s quality of life and may lead to a lifelong inability to empty the bladder and needs of self-catheterization with the risk of urinary tract infection. Bladder distension was classified as the fourth largest health care related injury in Sweden in 2013. Bladder distension may occur before the operation starts and is more common among orthopedic patients.
Motiverade anställda = Nöjda kunder : En handlingsplan för att implementera intern marknadsföring i ett litet tjänsteföretag
Sammanfattning ? ?Motiverade anställda = Nöjda kunder ? En handlingsplan för att implementera intern marknadsföring i ett litet tjänsteföretag?Datum 6 juni 2013Nivå Kandidatuppsats i Företagsekonomi/Marknadsföring, 15 högskolepoängInstitution Akademin för Ekonomi, Samhälle och Teknik (EST), Mälardalens HögskolaFörfattare Linda DAVIDSSON, 1989-02-10 och Jenny THYRWIND, 1986-08-22Titel ?Motiverade anställda = Nöjda kunder ? En handlingsplan för att implementera intern marknadsföring i ett litet tjänsteföretag?Handledare Finn Wiedersheim-PaulNyckelord Intern marknadsföring, Motivation, Kommunikation, Retention och KundlojalitetFrågeställning Hur kan ett litet tjänsteföretag utforma intern marknadsföring för att öka kundretentionen?Syfte Syftet med denna studie är att undersöka hur vi kan utforma en handlingsplan för intern marknadsföring inom ett litet tjänsteföretag för att påverka kundrelationen samt retentionen.Metod Undersökningen är baserad på ett antal kvalitativa intervjuer med medarbetare och ledning. Datainsamlingen resulterade i en problembild på Bolaget vilket bidrog till en fördjupning, analys, bearbetning samt en förbättring i Bolagets arbetssituation.Slutsats Inom Bolaget bör de utforma och sprida ledorden samt införa en ansvarig gällande kundkontakter på kontoret. De bör dessutom genomföra individuella möten samt utvecklingssamtal. Månadsmöten i Bolaget bör vara mer utförliga med fokus på personalfrågor.