Light has always fascinated humans but ever since the invention of the first light bulb, the use of artificial lighting has accelerated dramatically. Darkness has never been as rare as today and the overuse of lighting has created a new phenomenon called light pollution. Most living beings are biologically dependent on the recurrent twenty-four-hour rhythm of light and darkness, called the circadian cycle. Human beings are evolutionary developed after this circadian rhythm and the effects of constant artificial light is yet unknown. Scientists fear the consequences of constant lighting and what it means physically, mentally and philosophically for the human species.

AimThe specific questions in the theoretic part were:What is contained in the terms "balance and balance skill" and how can this skill be measured?The specific questions in the empirical part were:How does balance skill in different age categories of children correlate with biological and physiological parameters such as age, gender, body height, weight and level of physical activity?MethodsLiterature search based on books and scientific papers related to the questions posed above. Selection was made at libraries and on?line through "Pubmed". Specific search words were used.

Since prehistoric time man has used wood to build their environment. The material?s availabilitycombined with its good mechanical properties has often made it the material of choice. Like allmaterials exposed to natures degradative processes the properties of wood decreases over time.Rot, UV radiation and attacks by insects and pests damage wood if not protected. Since we wantwhat we build to consist, optimizing our building materials durability is of great interest.Techniques and methods for increasing the endurance of wood have been developed in severaldifferent places and for a long time.

A common perception is that fungicide treatments increases yield, but that the nitrogen of the particular grain is diluted so that the overall removal of grain nitrogen from the field remains unchanged. The aim of this paper is to demonstrate that a healthy crop reduces the risk of nutrient loss from agricultural land. The results from genotype and plant protection trials often show constant nitrogen content in the grain, although the yield has been increased. Results from such experiments are therefore processed in order to confirm this and show that it is no statistically significant difference between the protein content (and also nitrogen content) in crops which have undergone fungicide treatment compared to crops which remained untreated. The trials processed have been carried out in the southernmost part of Sweden and are distinguished to concern winter wheat production.The explanation to the results is that a healthy crop is able to maintain the biological functions of the plant in a more efficient way than a crop damaged by a fungal infection.

This BSc thesis is a part of an initial step of a collaboration between Skansen and Kenyan Wildlife Service (KWS) and constitutes of an inventory of the Nairobi Animal Orphanage run by KWS. Animal Orphanage takes care of orphaned and injured animals arriving from throughout Kenya. The project started out as a refuge and as a temporary place for animals in need of care and help. With time it has evolved to an establishment that resembles and functions more like an animal zoo. The aim of this inventory is to focus on how the biological needs of Congo grey parrots ( Psittacus erithacus erithacus) and cheetahs (Acinonyx jubatus) are met, in terms of management and housing.

In recent years, revelations about illegal international adoptions have made headlines around the world, and one notable country where many illegal adoptions have been facilitated is Chile. To find out that one's adoption wasn?t facilitated legally is a shock for the individual that raises many new questions about themselves and their origins. This study intends to examine how the identity of stolen adoptees has changed in their adulthood after they have found out that they were stolen, as well as to investigate how they experience alienation in Sweden from their position as both stolen and non-white adoptees. Qualitative methods have been employed in this study: participant observation, semi-structured in-depth interviews, and informal interviews.

This BSc thesis is a part of an initial step of a collaboration between Skansen and Kenyan Wildlife Service (KWS) and constitutes of an inventory of the Nairobi Animal Orphanage run by KWS. Animal Orphanage takes care of orphaned and injured animals arriving from throughout Kenya. The project started out as a refuge and as a temporary place for animals in need of care and help. With time it has evolved to an establishment that resembles and functions more like an animal zoo. The aim of this inventory is to focus on how the biological needs of Congo grey parrots ( Psittacus erithacus erithacus) and cheetahs (Acinonyx jubatus) are met, in terms of management and housing.

Natura 2000 is part of the European Union: s framework to protect and preserve biological diversity. Natura 2000- areas are by the goverment appointed to areas of national interest for preserving nature. Also wind power stations are appointed as of national interest and the reason for this is the goverments goal to get energy from reneweble energysources. This essay describes when both these intrests conflict eachother when it comes to building wind power stations within Natura 2000- areas. The main focus of this essay is a casestudy of two cases from two different counties, Dalarna- and Norrbotten county, where applications have been made to build wind power stations within existing Natura 2000- ares, both cases have reached the court dealing with enviromental issues.

In 2006, Stora Enso Skog implemented an education program in water management for harvester operators, timber purchasers, cut block planners and supervisors. The focus of the program was creating stream crossings with minimal harm to the stream and the surrounding riparian area. This main purpose of this study was to determine the difference in work procedures before and after participating in the program. The methodology consisted of field studies and interviews with harvester operators and their supervisors. The field study looked at how the streams had been crossed concerning the number of crossings, visible damage to the stream and/or the riparian area made by the machines. Biological parameters such as the width and dept of the stream and amount of large woody debris in the stream were also measured. The field result from 30 harvesting sites showed no significant difference between sites that had been harvested before or after the education program. But the harvester operators and their supervisors experienced an increased concern for watersheds after the educational program.

A field experiment was carried out in 2006 to investigate the effects of deep rotary cultivation on sugarbeet growth. The background to the experiment was a 2005 study showing potentially higher yield, higher cleanness and higher sugar content when primary tillage was carried out to 35 cm depth with a rotary cultivator. On four field sites in Skåne (L:a Isie, Ädelholm, Stävie and Vragerup), five different treatments were compared: mouldboard ploughing in the autumn to 20 cm; mouldboard ploughing in the autumn to 20 cm + rotary cultivation in the spring to 35 cm; rotary cultivation in the autumn to 35 cm; rotary cultivation in the spring to 35 cm; and mouldboard ploughing in the spring to 20 cm. The rotary cultivator used in the treatments is manufactured by a Dutch company, Imants. The implement cultivates the soil with spade tines fitted on arms that are mounted on a horizontal rotating PTO-driven axle. Beet plants were inspected and yield determined in the experiment, and three soil parameters were examined: penetration resistance, water infiltration and infiltration of blue dye. Root shape was also examined. The site at Stävie was not harvested due to poor beet establishment. At the other sites, the highest yield was found when the soil was rotary-cultivated in the autumn.

This essay is about gender equality in a Swedish upper secondary school. The aim is twofold: to obtain knowledge about feminism, gender equality, boys´ and girls´ situations in schools and gender equality work there; and to find out if government management documents for schools work effectively when it comes to promoting gender equality in schools. There are four research questions: How do teachers interpret what´s said in management documents for schools? What strategies do teachers use to promote gender equality? What opportunities and obstacles do teachers see for promoting gender equality at the specific school? And, finally, do the management documents for the school work effectively when it comes to promoting gender equality?The study has a socialist feminist perspective, which sees gender differences as a result of a mix of biological, historical and social factors. Important theoretical standpoints include gender socialization as an explanation for how girls and boys become women and men.The results of the study points out that teachers interpret management documents differently, and that they find the documents hard to understand.

The aim with this study is to through a research summary review experiences of growth and theparents caring ability among children who has grown up with parents having intellectual disabilites,and by empirical data illustrate how these persons today describe their childhood, their parentscaring ability and other cicumstances that have affected the growth. The results from the researchsummary are then to be compared with the results from the empirical data in purpose to reviewsimilarities and discrepancies.The study has a qualitative approach and it is based on foundings from earlier research andinterviews with four women whos mothers have intellectual disabilities.In the existing research of this issue there is a clear dichotomy between whether the researchershave focused on either the children or the parents. In both perspectives there are differentconceptions about whether a person with intellectual disabilities have the capacity to care for andraise a child, as there is about how the parents intellectual disaparment affects the child.The womens stories of the childhood are obviously unique, but they also have many experiencesin common, both among themselves as with what has been found in research. Children of parentswith intellectual disabilities have been classified as a risk group, wich has been shown by reversedroles for child and parent, lack of attachment to the parents and by insufficient care. Despite thedifficulties that the women have faced, they describe many parts of their lives in positive termstoday.There seems to be other influences in addition to the parents intellectual capacity that affect theesechildrens outcomes.

The distribution of work related tasks depending on gender leads to different appraisal depending on which gender is performing a task. This aim of this research is to study how gender differences influence task allocation within the restaurant industry. The study is inspired by a discourse analysis perspective complemented by constructivist and critical pragmatic theory. Interviews were conducted in two focus groups with seven participants in total. The analysis is divided into four sections which answer six discourse analytical questions using the interview material.

Modern milk production have come a long way when it comes to accommodating the nutritional and physiological needs of the animals, but unfortunately the behavioural and psychological needs of cows and heifers are often left unfulfilled. A long time for eating is beneficial for the digestion and also gives the cattle something to do and decreases the risks for developing abnormal behaviours. An important factor that influences eating- and ruminating time is the particle size of the roughage. The aim of the study was to find out if particle size influences the behaviour of dairy heifers, in particular with regard to eating behaviour and abnormal behaviours. The study was conducted at Uddetorp farm high school in Skara. Forty-two heifers of the breeds SR and SF were housed in 8 slatted floor pens.

Bakgrund: Gingivit kännetecknas av svullet/lättblödande och ibland ömt tandkött. Gingivit är en inflammatoriskt orsakad reaktion som uppkommer i samband med närvaro av bakterier. För att motverka utvecklingen av gingivit rekommenderas munhygienvård regelbundet. Gingivit kan utvecklas till parodontit med skador på upphängningsapparaten och benstödet, orsaken till detta är idag dock ej helt klarlagd. Kliniska variabler (blödning vid sondering) är vedertagna diagnostiska metoderna för diagnostisk av gingivit idag.