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797 Uppsatser om Enhanced biological phosphorus removal (EBPR) - Sida 11 av 54

Spårelement i Sveriges jordbruksmark : flöden, trender och fältbalanser

Field balances based on supply and removal of trace elements from the topsoil have been calculatedfor farms specialized in crop, dairy and pig production in Sweden. Today's field balances have beencompared with the field balances of 1990 in order to examine if, and then how, the situation haschanged. Studied trace elements are arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu),mercury (Hg), manganese (Mn), nickel (Ni), lead (Pb) and zinc (Zn).The balance calculations show that the stores of Cu and Zn are depleted with an average rate of -15% and -6 % over a 100-years period on crop farms when only commercial fertilizers are being used.The concentrations of Hg and Pb tend to increase in the topsoil on crop farms with more than 3 % forHg and with 2 % for Pb in 100 years. There is today balance between supply and removal of the traceelements As, Cd, Cr, Mn and Ni. In the south of Sweden, on crop farms with sugar beets in the croprotation, one can see a decrease in the concentration of Cd in the top soil by -6 % over a period of100 years.

Reingsresultat, drifterfarenheter och kostnadseffektivitet i svenska våtmarker för spillvattenrening

I denna studie har funktionen hos sju anlagda våtmarker för behandling av avloppsvatten i Sverige jämförts över tid med avseende på avskiljning av kväve, fosfor och BOD. Syftet var att undersöka våtmarkernas långsiktiga funktion, skötselåtgärder och relaterade kostnader. Våtmarkerna (1,6 - 28 ha stora) har varit i drift olika länge, mellan 7 och 17 år, och befintliga övervakningsdata samt intervjuer med ansvariga för respektive våtmark användes som grund för studien. Resultaten visade att våtmarkernas reningsfunktion generellt sett varit god utan någon tendens till en försämrad funktion över tid. Våtmarkerna belastades med 1100 - 9900 kg N/ (ha·år) och avskiljde mellan 420 och 2400 kg N/ (ha·år), beräknat som ett medelvärde per anläggning.

En kulturhistorisk undersökning av minneslunden på Stola herrgård ? förslag till en underhållningsplan

Uppsats för avläggande av filosofie kandidatexamen iKulturvård, Trädgårdens hantverk och design22,5 hp, 2014.

Levande fäbodbruk på 2000-talet : -svårigheter respektive möjligheter

Mountain holding in the 21st century ? difficulties and possibilities This study examines the difficulties and possibilities that mountain holding farmers have today. The following questions were considered: i) Who is cultivating mountain holdings today? ii) Which is the most important reason to keep animals there? iii) What kind of subsidies are most common? iv) What kinds of animals and what breeds are the most common? v) For how long period of time are the animals kept at the mountain holdings every season? vi) How are the fundamental regulations in the animal welfare law being followed, and are there any problems/conflicts in keeping animals at the mountain holdings? vii) What meaning do the animals have for the farmers and what are the farmer?s thoughts about the future? A survey based on these issues was sent out to 107 mountain holdings farmers with animals on grazing land, where 59 % submitted a response. The results showed that knowledge on how to keep animals at the mountain holdings was overall good.

Inkludering av elever med ADHD : En fallstudie från åk 5

Today there are many students with behavioral and developmental disorders in schools. One of these disorders is ADHD. The medical designation ADHD stands for Attention Deficit Hyperactivity Disorder. I have chosen to research how two students with ADHD can be included in a fifth grade classroom.This research paper addresses the issues surrounding the student?s day-to-day life with a focus on the classroom.

Förändringar i markanvändning över tid och dess påverkan på vattenkvalitet

The EU Water Framework Directive has led that management follows the boundaries of natural catchments.The Swedish waters suffer from a nutrient overload that originates mainly from diffuse sources such as agriculture and the subcatchment of Hackstabäcken in Vallentuna Kommun, just north of Stockholm, has been chosen for this study because of its high nutrient load and because it has undergone obvious changes in land use through the years.In this study, the land use in 1902 is compared with the land use in 2011 in order to investigate if it has influenced the ability of the landscape to produce ecosystem services related to nutrient removal. These services will continue to be produced as long as the system is stable and resilient, but when landuse changes and manure from horses increases it will lead to disturbances that can convert a system from one regime in to a completely different one. That will result in loss, or degradation, of ecosystem services such as denitrification, phosphor sedimentation and adsorption, vegetation uptake and infiltration.The results of this study are based upon area calculations of landuse from old maps from 1902 and 2011. Through these maps it becomes clear that the forests in Hackstabäcken, has increased with 170 ha together with an urbanization of 311 ha, at the same time as wetlands and arable land has diminished and lakes has suffered from reductions. Wetlands have been reduced with 76 ha and the ones remaining are of insufficient quality from a nutrient removal perspective.Data from 1902 and 2011 regarding number of horses and bovines indicated a decrease in bovines and an increase in horses.

Kreativa föräldrar - En fallstudie om föräldraskapets och föräldraledighetens effekt på förälderns kreativitet i arbetet

Parenting and parental leave in a career context is a highly topical subject in which discussions about gender equality and corporate discrimination against parents occur daily. Media has recently raised the theory of parenting and parental leave as having positive impacts on personal development, such as creativity enhancement, which may promote the individual's work performance. Despite the subject's significant value for society and organizations, no scientific research is to be found. This paper examines how an individual's creativity at work is affected when becoming a parent and if parental leave has any contributory effect. Furthermore, the paper identifies and scrutinizes four creativity theories that may help explain these changes in creativity.

Lärplattformar- verktyg för lärandet : Hur bör det utformas för att förbättra e-lärande för studenter på Linneuniversitet?

The development of the web has become an attractive area, with continuously and rapid development in the area it has led to a big change in the way of learning. Learning is a concept with many definitions, but a definition that is many at hand is that learning means that individuals seeking new knowledge and experiences that shape their goals, behavior and environment.With the development of the web a new way of learning emerged, E-learning. E-learning integrates information technology with the traditional learning to offers a flexible way of learning for students where they won't be dependent on time, place or others issues that would prevent their learning. E-learning takes shape of an application, LMS (Learning Management System). Today LMS are widely used in many universities, but with new technique comes new problems. The constant developments of the LMS have made the decision to use LMS difficult.

Komponentdatabas samt felanalys av luftsystemkomponenter

STOTP-M (SAS Component) har fått luftriggar från SAS-Braathens Stavanger och uppgiften är att iordningställa dessa och fasa in komponenter för provning.STOTP-M har tidigare ej utfört komponentprovning i rigg och ska nu ta fram procedurer för dokumentation av detta. Som ett led i detta ska en databas arbetas fram där provaren kan lagra information från provning. Denna information ska senare kunna användas för att åtgärdsbestämma underhållet av komponenter. Åtgärdsbestämning av de nya komponenternas fel är i nuläget svårt då inget tidigare underhåll är utfört av verkstaden.När en komponent kommer in för underhåll kan det vara svårt att direkt säga vad som är fel på den. Därför utför man en pre-test för att bestämma de åtgärder och reparationer som sedan ska genomföras.Detta examensarbete syftar till att skapa en databas för lagring av detta testresultat samt utfört underhåll på komponenter.

Identifiering av fosfatfosfors käll- och flödesfördelning i ett litet jordbruksområde

Eutrophication of lakes and streams are nowadays a well known environmental problem and implies an enrichment of the nutrients phosphorus (P) and nitrogen (N). Phosphorus is considered to be the most important component for the growth of aquatic plants and leads in too large quantities to an intensification of growth. Phosphate (PO4) is the fraction of phosphorus that can easiest be taken up by plants and thus have the greatest impact on eutrophication. Increased plant growth in lakes and unfavorable conditions for aquatic animals are two examples of negative consequences. A significant portion of the increased nutrient supply to nearby water can be derived to phosphate leaching from agricultural areas, where private sewers and agriculture is two main sources.

Kvinnliga och Manliga sysslor : - En undersökning utifrån de fem bäst sålda bilderböckerna skrivna av Astrid Lindgren

AbstractThe purpose of this essay was to study women?s and men?s place in the room, the public room or the private room, in the five best sold picture books written by Astrid Lindgren and the analysis was done with a feministic perspective. A lot of children read Astrid Lindgren?s picture books and therefore this might influence what?s female and masculine. The five best sold picture books written by Astrid Lindgren is: 1) Känner du Pippi Långstrump 2) Den där Emil 3)Visst kan Lotta cykla 4) Nils Karlsson-Pyssling flyttar in 5) Kajsa Kavat hjälper mormor.

Koldioxidlagring - realitet eller utopi? : En komparativ fallstudie med syfte att undersöka potentialen för koldioxidlagring i geologiska formationer och biologiska sänkor och dess förmåga att bidra till hållbar utveckling

To curb greenhouse gases and mitigate climate change is one of the biggest challenges human society face today. Carbon dioxide (CO2) has accumulated rapidly in the atmosphere as a consequence of burning of fossil fuels and deforestation. The aim of this study is to explore two methods to store carbon dioxide in geological formations and biological sinks. The aim is also to discuss the two mitigation options from a sustainable perspective and whether it can lead to a better environment and benefits for local and global societies. The research questions are: Which method to store carbon dioxide, geological or biological, is the most effective? Which method to store carbon dioxide, geological or biological, has the greatest potential to promote sustainable development for local communities?The method used is a comparative case study and presents four case studies that explore the potential for CO2 storage offshore in Norway and Brazil; and in tropical forests in Mexico and Brazil.

"Jag tror att det är ärftligt och att det är biologiskt.. och så tror jag att det är.. eller ja.. jag tror att det är biologiskt". Konstruktionen av ADHD och DAMP i skolans och vetenskapens värld

The purpose of this study was to investigate the understanding of the diagnoses ADHD and DAMP within different professional categories in the educational system, how it is being addressed and how this affect their work with children diagnosed with ADHD or DAMP. We also wanted to shed some light on the debate between Kärfve and Gillberg, about whether the diagnoses of ADHD and DAMP are social constructed problems or biological and genetic disorders. More specifically, our study was of a qualitative nature and consisted of interviews with seven persons working in six different professions within the educational system. The respondents all worked in school environments but with varied roles and thus varied experience of children with ADHD/DAMP. The interviews and literature studies revealed the complexity of ADHD and DAMP and also the diversity of the debate regarding the diagnoses.

Förekomst av meticillinresistenta Staphylococcus spp. på kirurgiskt behandlade hundar

Surgical site infections are a recurrent problem in veterinary medicine. A 2-5 % infection rate in clean surgery has been reported. During the last years the increase in methicillin resistant staphylococci has also taken its toll on veterinary medicine, demanding a stricter hygiene and antibiotic regime. The 2008 outbreak of methicillin resistant Staphylococcus aureus (MRSA) at the University animal hospital, Swedish University of Agriculture indicated that that the MRSA problem was now a real, possibly zoonotic problem.Since the first dog, in Sweden, was diagnosed as a carrier of methicillin resistant Staphylococcus pseudintermedius (MRSP) in a study in 2006, the infection rate by this bacterium has increased. In 2009 (January 1st - December 2nd) the National Veterinary Institute (SVA) has identified 58 samples as MRSP positive.

Värdering av lager i lantbruk : Går det att värdera ett växande lager?

Background: The valuation of growing crops is problematic partly due to weather conditions. 2011 showed that of all cultivated crops 42% were autumn sown which makes up a significant proportion of the total arable land in Sweden. This presented an opportunity to investigate more closely the methods and options used in the inventory valuation of biological assets. Problem: What options are there in the valuation of own-produced inventory specifically in the form of growing crops? Objective: This study's aim is to create an increased understanding of an agricultural company's options for inventory valuation of biological assets. In the survey of the options this study has found two main categories: rule-and principle-based accounting. Methods: A qualitative study with an abductive approach.

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