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652 Uppsatser om Feeding experiments - Sida 33 av 44

Activity patterns of snow leopards (Panthera uncia) at their kill sites

The snow leopard (Panthera uncia) is an elusive felid, native to the mountains in central Asia. Basic knowledge about the snow leopards? ecology has long been lacking but is advancing with the help of the GPS-technology. GPS cluster analysis can provide insight in the diet and prey selection of elusive predators, such as the snow leopard. Acceleration data from GPS collars can be used to study animal behavior but the two have never been combined to gain more detailed information of the feeding behavior of large carnivores.

Emissioner i slutna utrymmen Med speciell inriktning på emissioner av formaldehyd och organiska syror

This study aimed to evaluate the levels of formaldehyde and organic acids that can build up within enclosed spaces. Another goal was to compare two types of paints that can be used as coating barriers within showcases and in turn compare them to the modern, and by many highly recommended, material of Marveseal®. A low volatile waterborne alkyd/acrylate paint and a two component polyurethane paint was compared to Marveseal® in two series of experiments. One series measured the level of formaldehyde, and thus the effectiveness of the three chosen barriers, and the other series measured the level of volatile organic acids, both the acids emitted from the paint itself, and that of the wood. One box in each series were not treated at all and was used as a reference.The fact that different types of materials emit volatile organic compounds have long been known.

Föräldrars upplevelse av barnets sömn- och matproblem före och efter kontakt med Special-BVC

BakgrundSömn och matproblem är vanliga hos små barn. Bekymren kan vara stora och föräldrarna i behov av professionell hjälp. Barnavårdscentralerna har stor stöd- och hjälpfunktion men inte alltid resurser för detta. I Uppsala län finns en specialbarnavårdscentral som erbjuder råd och stöd vid dessa problem.Syftemed studien var att studera föräldrarnas bedömning av barnets sömn- eller matproblem före och efter kontakt med Special-BVC, samt om det fanns ett samband mellan antal kontakter och föräldrarnas bedömning av barnets situation efter avslutat kontakt.MetodDesignen var en deskriptiv, komparativ studie där 67 av 102 (66 %) föräldrar besvarade frågor om förhållanden före och efter kontakt med Special-BVC.ResultatInom flera områden minskade barnens sömn- eller matproblem efter kontakten med enheten. Emellertid bedömde föräldrar till barn med matproblem att dessa fortfarande var ett problem för barnet men inte för familjen medan barns problem gällande sömn minskat både för barnet och familjen.DiskussionKvalitetssäkring av vårdverksamheters resultat är viktigt.

Lakningsförsök med furubarksflis : en utredning om utsläpp av fenolföreningar samt metallsorption

The filters used today to purify water are often expensive and the need to find new filter materials is substantial. Studies of pine bark have shown that this is a material that may be used as an alternative to conventional filter materials, such as activated carbon. However, the study of pine bark has shown that a leakage of phenolic compounds may occur when using the material for water purification. Therefore, the purpose of this report is to investigate the release of phenols from pine bark, in order to evaluate the use of pine bark as a filter material. Another assignment is to investigate the amount of metals adsorbed by the filter material.

Nutrient effects on microorganism communities in nutrient poor soils

Better, more efficient fertilizers with great productivity and economic returns are needed, but it is important today to find fertilizers that are also sustainable. It is also important to carefully monitor their impact on the environment, including potential side-effects. In this context, the microbial communities that carry out numerous essential functions contributing to a functional ecosystem are of particular interest. The present study is a complement to a pot experiment that investigated the potential of different waste products for use as fertilizers and how they affect the microbial community. In the pot experiment, the clearest treatment change in microorganism community function was found in the fully fertilized treatment used as a positive control. The question was whether this was indirect, i.e.

Fosforgödslingseffektivitet i långliggande bördighetsförsök

Rapid population growth and the fact that phosphorous is a limited resource implies that the question regarding an efficient use of phosphorus is of great importance, and consequently,that the phosphorous use efficiency should be as high as possible. The view on phosphorous use efficiency, and how this is calculated, has varied over time. This has had great implications on what type of research that has been conducted, which have resulted in an inconsistency between the academic?s view on the subject and recommendations received by farmers. The purpose of this paper is to calculate the phosphorus use efficiency in the Swedish long term fertility experiments.

Utvärdering av Near Field Communication och Certified Wireless USB: Säkerhet vid utveckling av applikationer

Today?s society is one where technological advances are made daily, which increases the need to stop and assess the risks against users? integrity when integrating new technology in contemporary systems all the greater. We have taken two technologies, Near Field Communication and Certified Wireless USB, whose envisioned area of use is to be integrated into mobile phones, and evaluated what security threats are revealed for the respective technologies. The threats against security have been identified through research of the standards and existing reports for each technology. Practical experiments have not been conducted on account of us not having access to any equipment to run such trials.

Local poultry production in rural Zambia and the effect of light on poultry performance

Zambia is a country in Southern Africa where poverty is widespread and the traditional keeping of local poultry therefore plays a crucial role in improving nutrition. Meat and eggs from poultry are important sources of protein but also of income. Improving the poultry production is thereby a method to fight poverty. For poultry, the access to light is an important factor for both growth and egg production. In this paper, the focus is on the traditional village chickens used for both egg and meat production, how they are kept, their health and welfare and if the use of a solar lamp will influence their behaviour, growth and egg production. Three studies were conducted in Chibombo and Choma Districts in Zambia were 17 farmers were interviewed regarding the village chicken management of which six farmers participated in a solar lamp experiment.

Produktion av finfibrig ull genom avel och utfodring - inkorsning av merino i sveafårsbesättningar :

To produce fine fibre wool as a complement to lamb meat production, Merino and Svea sheep are currently being crossbred in the county of Jämtland. The aim of this study was to evaluate growth and wool quality of the first crossbred lambs. In addition, a literature study about nutritional effects on wool production has been carried out. The literature study showed that fine fibre wool should foremost be achieved through directed breeding. Nutritional requirements of the sheep at different stages of production should determine their feeding.

Differences in host plant preferences and olfactory physiology between populations of the moth Spodoptera littoralis established in Egypt and Benin

This study was made to compare and distinguish any differences in olfactory recognition and host plant adaptation between two strains of cotton leaf worm, Spodoptera littoralis. The populations used were established in Egypt and Benin, Africa. The documentation consisted of information about (1) each of the strains development through the larval stage up to pupation on diets of cotton, clover and cowpea. (2) Their oviposition preferences as adults between cotton, clover, cowpea, maize and cabbage. (3) Electroantennographic recordings to quantify any possible responses to plant volatiles. Throughout the diet experiments the larvae from the Benin strain showed significantly a better development between artificial, clover, cowpea and cotton respectively, while the Egypt strain had significance between artificial, cotton and cowpea/clover as diet. Also noted was how the strains substantial development of weight differentiated if fed the cotton diet, followed by the cowpea diet showing that the Benin strain would develop a higher body mass on a cotton diet as well as on a cowpea diet. This trend was however switched once the pupal stage was reached, where the Egyptian strain contained a significantly greater body mass than the Benin strain on the artificial and the Benin strain a greater on cowpea, which suggests that in the end, the Benin strain develops significantly better on cowpea while the Egypt strain develops better on an artificial diet. During the oviposition experiment that both stains showed a clear difference in hierarchy of host plants considered suitable for oviposition, where the Egyptian strain is significantly more attracted to clover than the Benin strain. Also showed with electroantennographic recordings and significant values was the higher sensitivity the Egypt strain had towards (E)2-hexenal, (E/Z)-b-ocimene, (Z)-3-hexenyl acetate, Nonanal, (-)-linalool and ?-myrcene when compared to the responses from the Benin strain..

Identifiering av kast- och variationspåverkande faktorer vid axelsvarvning: en studie utförd med hjälp av statistisk försöksplanering vid ITT Flygt AB

ITT Flygt ingår i den amerikanska koncernen ITT Industries Inc. som är ett globalt tillverkningsföretag med 45000 anställda i hela världen. ITT Flygt är världens ledande producent av dränkbara pumpar och omrörare. Produktionen i Sverige är i huvudsak baserad vid en anläggning i Lindås utanför Emmaboda och en i Kristianstad. I Lindås finns hela produktionsflödet från gjuteri till färdig produkt.

Måla med musik, komponera med färg : En retrospektiv studie av den kreativa processen, bland bild, musik och synestesi

The relationship between color and music, and their relation to the human being and our surrounding universe has been subject of studies, theories and experiments since the old ages. From the ancient China and Persia to the present times, philosophers, scientists and artists have tried to explain these connections between color and music and also tried to find answers to this ancient enigma.The invention of the color organ c. 1730, an instrument that was intended to display color in addition to the musical auditive experience, was the first attempt to materialize the practical correlation between notes and color. This correlation has its foundation in the ideas of Isaac Newton, who through his book Optics published only a few years earlier, conformed the beginning of a new art culture: ?Visual music?, in which image and sound are the fundamental elements in the creative process.The ?visual music? concept is not only grounded in the ideas of music and sound, but also in the extraordinary creative capability of certain individuals.

Compost and its effects on soilborne plant pathogens

Certain microbial residents from composts are known to possess the ability to suppress soilborne plant pathogens. Trichoderma spp. and Gliocladium spp. are commonly found in composts and are perhaps the most wellknown hyperparasites of fungal pathogens, which may also be naturally present in compost. Trials have many times proven them to be effective against plant diseases caused by soilborne pathogens such as Pythium spp., Phytophthora spp.

Två synsätt på elevers lärande av ämnet statistik : En studie av elever i årskurs 7

The purpose of this paper is to create increased understanding of how pupils learn statistics. This includes gaining insight into pupils' use of their own experience and group experience to help to get a better understanding of statistical problem solving. The study's research questions are about how pupils learn to work with data in tables and diagram and how pupils learn to work with measures.The theoretical framework consists of two approaches to studying learning. One approach is based on pupils? cognitive conditions, called set-befores, and the pupils' previous experiences, called met-befores.

?Det var bara att testa själv". En pilotstudie om vilket stöd mödrars erfarenhet av stöd från BVC efter att de slutat amma sitt barn före sex månaders ålder

Inledning: På BVC möter sjuksköterskan föräldrar och deras barn under barnens första år.Hon har här en betydande roll i att vägleda och stödja föräldrarna till att ge sina barn enhälsosam uppväxt. Få studier har visat på mammors behov och erfarenhet av stöd från BVC -sjuksköterskan efter nedläggning av amning före 6 månader ålder. Vi har i denna pilotstudievalt att undersöka dessa erfarenheter utifrån mödrarnas vardagsvärld.Syfte: Att få kunskap om vad modern upplever som stöd/icke stöd från BVC-sjuksköterskannär hon fattat beslutet att sluta amma.Metod: Kvalitativ innehållsanalys enligt Graneheim och Lundman (2004) användes föranalysering av pilotstudiens två intervjuer.Resultat: När intervjuerna analyserades framkom temat: mödrars efterfrågan och erfarenhetav stöd från BVC-sjuksköterskan efter nedläggning av amning. Resultatet presenteras utifrånfyra subteman: Upplevelsen av att sakna stöd och konkret information från BVC, upplevelsenav att söka bekräftelse från BVC, upplevelsen av att efterlysa en attitydförändring ochupplevelsen av att få ett positivt bemötande.Diskussion: Vid analys av resultatet är författarna medvetna om sin egen förförståelse ochbristande erfarenhet av intervjuver. Resultatet belyser tänkvärda och intressanta erfarenheterav hur mödrarna upplever stödet från BVC.

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