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669 Uppsatser om Genetic diversity - Sida 21 av 45
Könsselektering av spermier från lantbrukets husdjur
Millions of preselected progeny have been born since the development of The Beltsville Sperm Sexing Technology 1986. The method is based on flow cytometry and sorting is done on the basis of DNA difference of the X- and Y-chromosomes. Preselection of progeny provides an opportunity to obtain genetic gain and increased production as well as increased animal welfare and decreased environmental impact. However, the method is associated with low fertility, high costs and uncertainty whether the sorting process contributes to DNA damage and thereby results in genetically impaired progeny. Today, sex sorted sperm is only commercially available in the bovine industry, due to the fact that bull sperm is more suitable for selection than sperm from other species.
Betydelsen av anlagda våtmarkers area och ålder för förekomst av sjöfågel inom Linköpings kommun
The aim of this study was to examine what impact restored and constructed pounds and wetlands have on waterfowls in the area of Linköping. The birdlife in five constructed wetlands werechosen to investigate if specific factors like age, size and vegetation affected the avian diversity in wetlands. Also, extra focus has been given to the threatened Horned Grebe (Podiceps Auritus), breeding in the studied area. The results showed that the number of species as well as individuals of waterfowl and Horned Grebe changed over time in what might be a result of succession in the wetlands. Comparing the number of birds to the size of the wetlands showed a clear correlation. Larger areas inhabited greater numbers of species and individuals.
H?llbar arbetsmilj? i en distanskontext: En kvalitativ studie om mellanchefers tillv?gag?ngss?tt p? globala f?retag
The purpose of the study is to contribute knowledge about the representation of fiction
authors who have written in languages other than Swedish in educational school books
within the Swedish subject. This is done in relation to the school's promotion of cultural
diversity, a globalized world and to the Swedish curriculum. The study is a combination of a
qualitative and a quantitative analysis that takes its starting point in six educational books for
the courses Swedish 1 and 2. The analysis shows that all study materials include a broad
representation of authorships from Europe and the USA. The selection of authors from other
parts of the world is, however, limited.
?Man säger inte- Tjena Wallenberg här är jag, va!? : en studie av arbetskonsulenters förståelse av hinder och möjligheter på arbetsmarknaden för personer med utländsk bakgrund
The study is a qualitative survey with the purpose to through interviews with Employment Office social workers examine their perception of possibilities and obstacles in the employment market for immigrants. This purpose is specified through two specific problems; how are cultural and ethnic affiliations portrayed in relation to what is perceived as Swedish in the communication with Employment Office social workers and whether they reckon that the specifications in the employment market are pragmatically or normatively motivated. The materials are presented using a social constructivist perspective and in relation to previously conducted research and our chosen theory. The results are presented and analyzed in themes. The main conclusions drawn from the interviews are that it primarily is the individual prerequisites that are central, but that structural factors also affect the entry into the employment market.
Aortic Body Tumors in Dogs
The purpose of this essay was to review the literature and describe the patophysiology, diagnosis, microscopic and macroscopic appearance of aortic body tumors in dogs. The tumors originate from the chemoreceptor organs situated at the base of the heart. The chemoreceptor organs are neuroendocrine cells responsible for surveillance of changes in e.g. the blood pH. Aortic body tumors are rare and represent 7 % of the total cases of primary cardiac tumors in canines.
En jämförelse mellan versionerna 1.2 och 2.0 av WAP
The ability to tackle NP-hard problems has been greatly extended by the introduction of Metaheuristics (see Blum & Roli (2003)) for a summary of most Metaheuristics, general problem-independent optimisation algorithms extending the hill-climbing local search approach to escape local minima. One of these algorithms is Iterated Local Search (ILS) (Lourenco et al., 2002; Stützle, 1999a, p. 25ff), a recent easy to implement but powerful algorithm with results comparable or superior to other state-of-the-art methods for many combinatorial optimisation problems, among them the Traveling Salesman (TSP) and Quadratic Assignment Problem (QAP). ILS iteratively samples local minima by modifying the current local minimum and restartinga local search porcedure on this modified solution. This thesis will show how ILS can be implemented for MSA.
GSM-baserat larm
The ability to tackle NP-hard problems has been greatly extended by the introduction of Metaheuristics (see Blum & Roli (2003)) for a summary of most Metaheuristics, general problem-independent optimisation algorithms extending the hill-climbing local search approach to escape local minima. One of these algorithms is Iterated Local Search (ILS) (Lourenco et al., 2002; Stützle, 1999a, p. 25ff), a recent easy to implement but powerful algorithm with results comparable or superior to other state-of-the-art methods for many combinatorial optimisation problems, among them the Traveling Salesman (TSP) and Quadratic Assignment Problem (QAP). ILS iteratively samples local minima by modifying the current local minimum and restartinga local search porcedure on this modified solution. This thesis will show how ILS can be implemented for MSA.
Genetiska och epigenetiska samband mellan näringsförsörjning och fertilitet hos mjölkkor
The dairy cow?s ability to resume estrus after calving and to conceive is affected by their metabolic status after calving. For high yielding cows there is a high risk that the feed intake will not be sufficient to cope with the increased energy demands after calving, and the cow will end up in a state of negative energy balance. Energy balance can be measured in various ways, for example by body condition score or by plasma concentration of several metabolic hormones and metabolites. After calving, endocrine pathways stimulate tissue mobilization; insulin signaling is blocked, the concentration of insulin-like growth factor-1(IGF-1) and leptin decreases, and the concentration of growth hormone (GH) increases.
Den svenska lapphunden - en ras i behov av förändring?
Many pedigree dogs are suffering from inherited diseases or personality disorders caused by selective breeding. The Swedish lapphund is a breed that has been suffering from some loss of genetic variation due to the heavy use of only a few males. Concerns have arisen and crossbreeding has been discussed as a way to manage gene loss. Four breeds has been taken into consideration for this purpose; schipperke, finish lapphund, Norwegian buhund and Norwegian elkhound, black. These breeds has been tested theoretical by a comparison of mentality and health.
Från apparat till App : Public service i ett förändrat medielandskap
This Bachelor thesis is a qualitative study of the public debate regarding the role of Public service in the media converged society today. The purpose of this thesis is to examine how the public debate, that is the Swedish Public service television and people with broad representative knowledge about Public service, motivates a change of the function of the Swedish Public service television.Our issues are: What does the public debate say about the function of Swedish Public service television in our society today and how is a change motivated in this debate? How does the public debate look upon today´s media convergence and the fragmentation of the audience which, according to Denis McQuail, is a consequence of this?The method of this thesis is a qualitative analysis and we have analyzed ten opinion articles and Swedish Public service television magazine ?DittSvt?. The theoretical background was obtained from Henry Jenkins and Håkan Hvitfelts theories and thoughts about mediaconvergence. We have supplemented this with Denis McQuails theory regarding the fragmentation of the audience.In this thesis, we see that the public debate is a lot about diversity in Swedish Public service television programming and that the democratic base is still very important.
Digital Materia
Med tankar från pedagogen Montessori och filosoferna Platon och Baudrillard har
detta arbete behandlat frågor om datorn och dess betydelse för en grafiker.
Frågeställningen formulerades efter hand och lydde tillslut: ?Hur kan materia
te sig i digital form??
Forskningen resulterade i en hypotes för hur digital materia skulle födas i
datorn: genom att blanda två uppsättningar av data, såsom två genuppsättningar
tillsammans skapar en ny organism. Under produktionen utvecklades därmed en
metod för hur en grafiker ska kunna skapa tillsammans med en dator. Syftet är
att ge andra grafiker ett nytt sätt att se på digital grafik.
Evighetsträd
FSC (Forest Stewardship Council) is the major form of certification system in Swedish forestry today and its more than 11 million hectares are covering almost half of the total productive forest area in the country. Its regulations prescribe that at least 10 wind firm trees should be left behind after every clear cutting operation.
This study have taken place on 30 recently clearcut objects in Bergslagen, Sweden, were an inventory of the standing stock have been made. The research shows that, with 90 % security, the retained trees together contain 9-13 m3sk per hectare. Pine is the dominant tree and it covers more than half the numbers of retained trees and its volume cover 65 % of the retained trees total volume. Spruce is on second place with 30 % of the retained trees, but only 21 % of the standing stock.
Konstruktion av en autonom dammsugare
The ability to tackle NP-hard problems has been greatly extended by the introduction of Metaheuristics (see Blum & Roli (2003)) for a summary of most Metaheuristics, general problem-independent optimisation algorithms extending the hill-climbing local search approach to escape local minima. One of these algorithms is Iterated Local Search (ILS) (Lourenco et al., 2002; Stützle, 1999a, p. 25ff), a recent easy to implement but powerful algorithm with results comparable or superior to other state-of-the-art methods for many combinatorial optimisation problems, among them the Traveling Salesman (TSP) and Quadratic Assignment Problem (QAP). ILS iteratively samples local minima by modifying the current local minimum and restartinga local search porcedure on this modified solution. This thesis will show how ILS can be implemented for MSA.
Effekt av utfodring och motion för utveckling av diabetes mellitus hos gråhund och jämthund. :
This study is a follow up of a pilot study made 2004, that evaluated feeding, exercise and weight as possible risk factors for developing any kind of diabetes in dogs. We have selected our material for a certain kind of DM that exists among Norwegian and Swedish elkhounds. These breeds are among the most common breeds affected by diabetes and this kind of DM almost exclusively affects intact bitches.
We performed a case- control study where the owners were interviewed over the phone. The owners of a total of 48 case dogs and 58 control dogs were contacted. The questions for the cases focused on the time before the diagnosis and the questions for the control dogs focused on the dog´s adult life.
-"Fattar man inget är det kört!" : - en studie i kommunikation mellan Bollnäs Bostäder och deras mångkulturella hyresgäster
Studien visar att Bollnäs Bostäder bör utveckla gemensamma arbetsmetoder och introduktionsmaterial för sina bovärdar när det gäller lägenhetsintroduktionen med de invandrare som har svårigheter med det svenska språket. Jag anser att det skulle skapa förutsättningar för en jämnare kvalitet i kundprocessen. Studien visar också att det inte alls är säkert att de invandrade hyresgästerna upplever samma kommunikationssvårigheter som Bollnäs Bostäder upplever, vilket jag anser kräver en djupare undersökning. Genom att intervjua andra fastighetsföretag har jag också kommit fram till förslaget att Bollnäs Bostäder kan undersöka fördelarna med att utveckla en introduktionsfilm till sina lägenhetsintroduktioner för att lättare nå fram med sina budskap. Slutligen anser jag att det är viktigt att ha kunskap, inte bara i verbal-, utan även i icke-verbal kommunikation för att kommunicera med invandrade hyresgäster som inte kan det svenska språket. Därför tror jag att det skulle vara värdefullt för bovärdarna att få utbilda sig inom detta område..