Sök:

Sökresultat:

590 Uppsatser om Wear resistance - Sida 16 av 40

Optimering av reducerad bearbetning : högre skörd till lägre kostnad

Optimization of soil tillage and crop rotation is important in many aspects, but particularly in maximizing profit margins. Since the economic outcome is usually decisive, it can be interesting to study different combinations of soil tillage systems and crop rotations in order to identify the maximum economic outcome. How a crop functions in a particular tillage system determines whether it is profitable to grow that crop. Different tillage systems affect the soil and its processes in different ways. Reduced tillage often works best on weak-structured heavy clays and on silty clays.

Tillämpning av nya beräkningsmetoder för branddimensionering av  träkonstruktioner - analyser och jämförelser

To build high-rise buildings made of timber has for long been limited by national laws, due to the lack of knowledge in engineering solutions. Frame structures made of wood has for a long time been associated with major fire hazards and consequently lower safety and this connection is still being made today. The increased environmental awareness in recent years has contributed to the exploitation of indigenous building materials, including wood from our own Swedish forests and has become increasingly common. Increased knowledge about how structures behave in fire and how they can be protected in order to achieve safe timber structures has resulted in a growing interest in these structures in the construction industry. Research in the area is constantly updated and new laws allow any number of storeys in wooden buildings in Sweden as long as the performance requirements are fulfilled.The main part of this work has involved calculations of the fire resistance and load bearing capacity of floor and wall constructions.

Effektiv provningsmetodik för växelföringsdamasker

Completed durability testing of gearshift gaiters at Kongsberg Automotive in Mullsjö, is sometimes leading to discussions regarding whether or not a gaiter is supposed to be a pass or a fail. That is because the current pass/fail-criterion are a bit vague. A durability test takes around 4-5 weeks to complete which is a long time if the tested material does not pass the test and a new material has to be tested instead. Stricter pass/fail-criterions and a faster testing method for the materials are therefore desired.In order to develop a durable pass/fail criteria, seven already judged gaiters were chosen. Every one of the gaiters was put through detailed analysis, after which there were a new assessment of the gaiters.

Våld eller sex? - En litteraturstudie om den akademiska kontroversen kring våldtäkt

Partly due to its consequences on the physical and mental health but also because of women?s constant fear of being violated, rape is considered to be a public health issue. The theoretical aspects of rape were first discussed in the 1970?s mainly from the viewpoints of Susan Brownmiller and Michel Foucault. The aim of this literature study is to investigate the different perspectives on whether rape should be viewed as sex or violence, how the controversy has developed and what the authors claim that the different perspectives result in.

Kontanthantering i förändring : En fallstudie om samarbetet i strävan mot att minska kontanthanteringen i samhället.

This study examines a case of cooperation between banks, commerce, police and the municipality of Skövde, which in a project has the target to reduce the use of cash by 15 % in the city during 2011. The purpose of this study is to increase the understanding of the importance of cooperation in which different actors come together to reach a common goal, such as speed or interfere with an ongoing change, while they must meet their own interests. In this study the case of cooperation has been studied by using a qualitative approach. The methods used in this study are participant observation and a group interview as well as personal interviews. The theories underlying the study revolve around the concepts of collaboration between organizations with similar interests, changes in society, conflict and resistance to change..

Amningsbh : Produktutveckling av amningsbh enligt en identifierad kravbild

Definitionen av en amningsbh är en bh där bröstet lätt kan tillgängliggöras för barnet vid amning, till exempel med en öppningsbar kupa. Vidare ställs det höga krav på att amningsbh:n ska vara anpassad för den moderna mammans livsstil och samtidigt ta till hänsyn de komplikationer som kan uppstå vid amning. Hos ett svenskt modeföretag, vilket studien riktar sig till, finns det ett behov av att vidareutveckla sitt sortiment av amningsbh. Syftet med studien är att granska vilka krav en amningsbh ska uppfylla, samt hur kraven ska uppfyllas. Dessa riktlinjer ska sedan sammanfattas och verifieras i framtagningen av produktionsunderlag för en första prototyp.

Kvinnors upplevelser av förändrad kroppsuppfatting och sexualitet efter mastektomi : En litteraturstudie

Breast cancer is the most common form of cancer affecting women. The treatment of breast cancer may lead to forcing the woman to remove her breast. The breast is a symbol of femininity and sexuality for many women. The purpose of this literature-based study is to describe women's experiences of altered body image and sexuality after mastectomy. This may provide a better understanding of the nurse in responding to these breast cancer patients.

Sticka ut är silver, passa in är guld: - och fyra andra medaljer i det svenska moderacet

The fashion market is highly dynamic, and characterized complexity, abstract phenomena and creativity. Further, differences between factors such as gender, countries and social classes pose increasing challenges to fashion companies and researchers active within this area. In light of these facts, the value of creating tools that help companies and professionals active within this industry becomes evident. Much research has been focused on creating a more thorough understanding of its underlying logics and its main drivers from a business perspective, whereas knowledge regarding fashion consumers and what drives their behavior are more limited. Through this study, insights about the Swedish fashion market and its consumers are generated.

Motståndet mot religiösa yttringar i det offentliga rummet : En kvalitativ studie om hur muslimska religiösa yttringar påverkas av de rådande sociala normerna

The study's aim was to increase knowledge about the resistance of the Muslim religious expressions in the public sphere and its emergence on the basis of the case around the opposition to call for prayer. The study was conducted through the use of the qualitative research approach through interviews with informants who have a pronounced aversion regarding the existence of the public call to prayer in Sweden. The study's questions have been answered by an analysis of the empirical material by using different theoretical points that illustrate how Western standards are valued higher than the other, in the various standard systems. The view of the Muslim religious practices depicted by informants through an interpretative framework that is characterized by Islamophobic arguments that are considered to be incompatible with Western culture and the principles of the secular state striving. Such discourses can create an uneven distribution of power between Muslims and non-Muslims on the basis of the West's representations of Orientalism explained based in ethnocentric knowledge.

De fina skillnaderna : Vem och vad signalerade status i klädedräkten, Öjaby och Virestad under 1780-talet.

This study examines patterns of consumption during the 1780s in Öjaby and Virestad parishes. I have examined the clothes and jewelry in estate inventories using the concept of status. Then I have used Pierre Bourdieu's theories to understand fashion mechanisms.I have identified five different groups, each distinguished by their formal wear. Men have similar clothes but in Virestad they have more items and more silver. Four people were divergent, they choose other materials and models.

Metaller i dagvatten - Effekter i recipient : En analys av koppar, kdamium och zink i dagvatten från en parkering i Halmstad, Sverige

When stormwater occurs near human activity the water gets polluted. The purity and composition vary widely depending on the types of activities in the area, the type of surface the water comes in contact with, precipitation and many more parameters. It has long been known that stormwater quality can affect both human health and the environment as stormwater is a major contributor to pollution of receiving waters.A human activity that has an impact on the environment in several different ways is traffic and stormwater is no exception. Airborne gases that react with precipitation, oil leaks and fuel systems that drops down on the ground, metals from brake linings and rubber particles from tire wear are some of the aspects you have to take into account when categorizing the relationship between traffic and polluted stormwater.In this project, stormwater samples from a parking lot in Halmstad, Sweden were collected and analyzed with an atomic spectrophotometer. The presence and relationship between copper, cadmium and zinc with different rainfall parameters have been studied.

Ka?ta tjejer och Ka?rria?rsmammor - kvinnan ska vara allt : En kvalitativ studie om hur kvinnan skildras i magasinen Cosmopolitan och Slitz

Every day readers of magazines receive advice on how their life is expected to be. Magazines write about what to wear, who you should be dating and where you should work. People are social beings and are affected on what they read, hear and see. In that way media is one of the main channels which defines people and draws examples on for example how a "normal" woman should be.This essay dealt with several questions: how women are described in Swedish women magazine Cosmopolitan and men ?s magazine Slitz and how they are differ from each other.

Skadliga nollflödespunkter i Fortum Värmes fjärrvärmenät i Stockholm : En analys av dess förekomst och effekter

When several production units provide a district heating network, water is pumped from different directions. When the flows from the plants finally meet in the network, the water can be completely still. These places are called zero flow zones. In district heating networks with several plants, which also have different supply temperatures, large and frequent temperature fluctuations can occur when the zero flow zones move. This may cause wear on the pipes, a phenomenon called low cycle fatigue.For this reason it is important to examine where and when zero flow zones that cause temperature changes occur.

Kvinnor och Medier : En studie om hur tidskriften Glamour konstruerar stereotypa kvinnobilder på sina omslag

Sweden has an active and growing culture of feminist comic book artists that use comedy as a mean of disseminating political ideas and critic. In this essay I do a reparative reading of Sara Granér?s comic book All I Want for Christmas is planekonomi in order to find out if it advocates alternative orders and/or ways of expression. By exploring what the comic book does to me as a reader and how, using the term ?skev? ? a hybrid of queer that examines normativity not strictly tied to sexuality ? and gulesque theory ? a mix of feminism, cuteness, the grotesque and riot grrrl ?, I show that the comic book, through the use of comedy, works as a trojan My Little Pony, reclaiming the girly franchise, while challenging several so-called dichotomies, such as: femininity/masculinity; youth/adult; high art/kitsch.

Hur väl överensstämmer tandslitage på intra-orala foton med klinisk registrering?

Syftet: Målet med studien var att utvädera kliniska intraorala foton som diagnostisk metod för att bedöma tandslitage (attrition, erosion och abrasion) och jämföra dessa bedömningar med kliniska registreringar. Material och metod: Studien genomfördes på Tandvårdskolan i Malmö, där man slumpmässigt valde ut 30 vuxna patienter. Dessa patienter undersöktes med avseende på tandslitage (attrition, erosion och abrasion) och kliniska foton togs. En månad efter kliniska registreringen gjordes en bedömning av de kliniska fotona, utan att ha kännedom om resultatet av de kliniska registreringarna. Båda undersökarna har på samtliga patienter utfört klinisk registrering och fotobedömning oberoende av varandra. Intra- och interobservatör överensstämmelse uppskattades genom Cohen?s Kappa- koefficient. Resultatet: Intraobservatör överensstämmelsen mellan bedömningar av foton och kliniska registreringar var måttligt-till-god med ett P-värde på 0,039-0,046.

<- Föregående sida 16 Nästa sida ->