Kugghjul är ett av de viktigaste elementen som finns i en maskin. Kuggväxlar har den högsta verkningsgraden bland kända energiomvandlare idag. Kuggväxlar har höga krav och det krävs en robust konstruktion för att göra dem okänsliga för störningar. Störningar på kuggväxlar ger upphov till transmissionsfel. Transmissionsavvikelser orsakar olika typer av oönskat beteende som exempelvis utmattning och buller är ofta en följd av tillverkningsavvikelser.I detta arbete har ett kommersiellt program, Helical3D, som bygger på kontaktmekanik och finita element metoden används för att studera inverkan av tillverkningsavvikelser på växelns prestanda i form av kontakttryck och transmissionsfel.

Since the Human Immunodeficiency Virus (HIV) that causes Acquired Immune Deficiency Syndrome (AIDS) was discovered in the 1980s, the condom has scientifically proven to be the only technological device that can prevent transmission of the virus during sexual intercourse. This technical approach to the HIV has strongly emphasized that prevention is only possible if the condom is properly used. However, as a technological artifact the condom has shown that its use is laden with values. The question of values on condoms has brought in a heated debate on the moral justifications of its use. In Malawi, just as in other African countries, the Faith Community has rejected the Governmentsplea to promote condoms as the preventive measure against the virus.The Faith Community has emphasized on abstinence and mutual faithfulness as the only reliable means to the prevention of HIV/AIDS.

Artificial insemination (AI) has had a great influence on the development of pig production and is today widely practiced (Gerrit et al., 2005). With AI, genetic progress can at a short period of time be spread worldwide compared with using natural service and the best boars can be intensively used. This is also one of the biggest risks with AI; the impact of semen containing a genetic disease or contamination of pathogens can be enormous. Fortunately, it is a small risk of disease transmission due to many tests of the boars and the semen before use (Maes et al, 2008). It is important that the boars used for insemination have good breeding values along with good reproduction features and have good fertility results (Robinson et al., 2005).

Today evidence exist that environmental chemicals deteriorate male sperm quality and that testicular cancer is increasing. Bisphenol A (BPA) is a chemical with estrogenic effects used in the manufacture of polycarbonate plastic and are found in, for instance, plastic boxes, feeding bottles and food containers. Much of the research on how men's reproductive ability is influenced are performed on rats. This review article complies how male rat reproduction is affected by BPA as a model for humans. Studies have investigated how sperm are affected, hormonal changes during reproduction and how reactive oxygen species (ROS) affects sperm.

In the spring of 2006 we had our first outbreak of avian influenza of highly pathogenic H5N1 (HPAI) among wild birds in Sweden. This disease have impact on poultry industries world wide. Sporadically the virus infects other species than birds and we now know it can even cause fatal infection of humans. There are not yet any confirmed cases of transmission of the disease between humans though a suspected case in an Indonesian family is under investigation. If a mutation occurs that changes the pathogenicity and host affinity to humans we are at a risk of a new pandemia, perhaps like the Spanish flu in 1918-1920.

Neospora caninum is an intracellular parasite that was first recognized in dogs in 1984. The parasite is now one of the most commonly diagnosed infectious causes of abortion in cattle word wide. N. caninum is transmitted to cattle in two ways. They may be infected from eating food contaminated with oocysts from a definitive host or they may be infected in utero from an infected mother. The infection is transmitted efficiently from cow to her offspring and this can occur for generations.

Growing up as a child, we had a Dog. To us, it was like a means to an end. That is, hunting other animals for food and for protection, with no special care and treatment given to this animal. Butas days passed by I began to witness a wind of change against such actions. I was made to understand that we were committing two crimes-: using the Dog as a means to an end (for hunting and for eating animals).

In the care for the critically ill patient the next of kin is of great importance. Their support, love and care for the patient, increases the wellbeing and makes a connection to the patient?s normal lifeworld. For the next of kin to be able to be that support the next of kin needs to be helped to maintain the basic need of for example their sleep, food, hygiene and psychosocial support. The critical care nurse must see to the patient?s whole lifeworld which includes their next of kin.The aim of the study was to identify the resources available for the next of kin in intensive care units in Sweden.

Pathogenic microorganisms pose a big threat towards food production. Meanwhile, negative impacts on humans and environment are seen by the use of pesticides. Biological control agents are an alternative to the use of chemical pesticides, and plant-growth promoting rhizobacteria, such as Bacillus amyloliquefaciens has been shown to have good properties as biocontrol agents. Before these bacteria can be used commercially their impact on other soil organisms has to be evaluated. This thesis looks into what biocontrol bacteria are and how they might affect earthworms.

The movement of the allotment gardens reached Sweden in the beginning of the last century. The allotment gardens quickly spread among the big towns from Malmö in the south and to the far north of the country. Today, there are about 42 000 owners of allotment gardens in Sweden. This work will show the differencies and similarities comparing the original ideas of allotment gardens with how they are used today. The specific questions were; what are the reasons to acquire an allotment garden; is it used for raising vegetables and fruit or only for growing flowers; is what is cultivated there also gathered and used or is it cultivated only for the pleasure of gardening; and finally how the owners of the allotment gardens spend their time there ? by cultivating the land or by recreational activities. Literature studies were made as well as an inquiry at one allotment garden area i Lund. The ideas of the original allotment gardens in the beginning of the 20th century were as much based on the need of getting out of the aparment to a healthy environment, as cultivating vegetables for economical reasons.

The reindeer are kept in extensive pasture systems where the conditions are similar to thosefor wild reindeer. Since the reindeer have special demands on their pasture, it is difficult tokeep them in intensive production systems where they cannot graze selectively. Too manyreindeer on a small area will also facilitate spread of diseases. A selection program forreindeer needs special qualifications according to several different reasons. The purpose withthis literature review is to summarize the factors needed for a reindeer selection program andthe problems and possibilities included.Reindeer grazing right has a special meaning to the Sami and are reserved for them accordingto immemorial rights.

It is important, for companies operating on a homogeneous product market, to understand and adapt to customer needs. Since coffee is a homogeneous product in food retail it is vital for coffee companies to work extensively with differentiation and the fierce competition. The prevailing homogenity makes it difficult for companies to develop the product itself and must therefore work to create added value to the product.The purpose of this thesis is to carry out a study on consumer decision-making when purchasing homogeneous products, and to examine how companies work to strengthen their brand and gain market share in a homogeneous product market. The market that this thesis highlights is the coffee market.To answer the purpose of this thesis the writers have conducted a questionnaire survey regarding consumers? decision-making process and interviewed two marketing managers for two major actors on the coffee market.

Travelling All Inclusive implicate that a traveler goes on a trip where food, beverage, room and sometimes activities are included as everything is already paid in advance. The purpose with this study is to examine what it is that have motivated people to travel All Inclusive and to examine how people and travel companies reason about the possible economical effect All Inclusive have on a destination and a local population. We chose to conduct a survey over Facebook. As a complement to the survey and to find out how travel companies reflect on All Inclusives effects, we chose to implement email interviews with Ticket, Solresor and Airtours. The theories in this study focus on travel motivation, travel personalities and All Inclusive's impact on a destination and a local population.

En del personer, framförallt osttillverkare och butiksinnehavare, hävdar att det finns sensoriska skillnader mellan ostar gjorda på pastöriserad och opastöriserad mjölk. Frågan är om detta stämmer och vad som i så fall skiljer dem åt smak-, textur- och arommässigt. Det här är en litteraturstudie som bygger på fakta från fyra vetenskapliga artiklar. Artiklarna, som alla är vetenskapligt granskade och publicerade i någon tidskrift, hämtades från någon av databaserna Summon och Food Science and Technology Abstracts (FSTA). I alla artiklar framgick det att det fanns tydliga sensoriska skillnader mellan ostar gjorda på pastöriserad och opastöriserad mjölk.

The aim of this study was to describe the importance of diet and physical activity related to Diabetes Mellitus (diabetes). Method used was a descriptive literature study based on empirical studies. The study shows that diet, physical activity and lifestyle-changes are very important factors when it comes to preventing and treating of diabetes. By the right diet and physical activity the treatment with medications in some cases can be superfluous and people with the disease could live longer and be healthier during their lifetime. Nurses have the responsibility to educate, inform and make sure that the diabetic patient gets the best care as possible specially suited for this individual patient.