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2837 Uppsatser om Water activity - Sida 32 av 190
Francisella tularensis subspecies holarctica : the curious case of a water- and mosquito associated bacterium in Sweden
Francisella tularensis, the causative agent of the zoonotic disease tularaemia, is highly contagious and potentially fatal for a wide range of wildlife species of the northern
hemisphere, also humans. Although recognized as a pathogen for over 100 years, much still remains to be elucidated concerning the ecology and transmission of the bacterium, hence this literature overview aims at compiling data regarding the aquatic association and the role of
mosquitoes in transmission of Francisella tularensis subspecies holartica, the sole subspecies in Sweden. While a linkage between the bacterium and natural waters stands beyond dispute, there is no consensus in the literature concerning its potential as a reservoir. However, two
prevailing theories can be distinguished; one proposes the water association being mammaldependent and thus merely the result of contamination from semi-aquatic mammals living in
close vicinity to the water source. The other, quite contrary, suggests mammal-independence and hence that water, possibly in association with protozoa, serves as an environmental reservoir for the bacterium.
Smärtans påverkan på fritidsaktiviteter : En intervjustudie med personer med fibromyalgi
Syftet med examensarbetet var att beskriva hur personer med fibromyalgi upplevde att fritidsaktiviteter påverkades av smärta. Som datainsamlingsmetod valdes en intervju. Semistrukturerade intervjuer genomfördes med tio kvinnor. Frågorna utformades från centrala begrepp i The Model of Human Occupation. Inklusionskriterierna var att deltagarna skulle ha diagnosen fibromyalgi och vara i arbetsför ålder.
Samband mellan självskattad fysisk aktivitetsnivå och aktivitetsregistrering via dagbok
Syfte: Studiens syfte var att undersöka samband mellan hur universitetsstudenter skattar sin fysiska aktivitetsnivå och hur de registrerar aktivitetsnivå med hjälp av dagbok samt att se om de kom upp i ACSM (American College of Sport Medicine) och WHO´s (World Health Organisation) rekommendationer.Metod: Studien hade en icke experimentell, deskriptiv och korrelerande design där 26 försökspersoner, två män och 24 kvinnor, rekryterades via anslag. De fick först svara på en enkät och därefter registrera sin aktivitet via en 7-dagars aktivitetsdagbok.Resultat: Studenterna ansåg inte att de hade en stillasittande livsstil och alla deltagare utom en ansåg sig komma upp till ACSM´s rekommendationer av fysisk aktivitet 30 minuter per dag av måttlig intensitet alla dagar i veckan. Trettiofem procent kom inte upp i WHO´s rekommendationer och av dessa överskattade 67% sin fysiska aktivitetsnivå. Sextiofem procent kom inte upp i ACSM´s rekommendationer och av dessa överskattade 94% sin aktivitetsnivå.Konklusion: Studenterna hade en låg fysisk aktivitetsnivå utifrån ACSM´s rekommendationer och majoriteten av de som inte levde upp till WHO och ACSM rekommendationer överskattade sin fysiska aktivitetsnivå. Det krävs dock mer omfattande studier för att dra några generella slutsatser då denna studie hade en skev könsfördelning och ett lågt antal deltagare.Keywords: Self-estimation, Perception, Activity diary, Physical Activity level, Overestimation. .
Utveckling av kyl- och smörjsystem för ekobilen Agilis HCCI motor
Every year, KTH participates in the Shell Eco Marathon, a competition whose goal is to design a vehicle that can go as far as possible using only the equivalent energy of one liter of petrol fuel. This year, one of KTH?s contributions to this race is the Agilis prototype; a car powered by a uniquely configured HCCI-engine developed at the university. The engine is dependent of several subsystems in order to work properly, among other, systems for cooling and lubrication.Combustion engines are in need of a cooling system that reduces the heat developed during the combustion. In general, two main types of cooling systems are employed; either air cooling, where the outside of the cylinder is exposed to a flow of the surrounding air, ore water cooling, where water flows in tubes around the engine, and the heat are transferred by the water to the surrounding air through a heat exchanger.The purpose of the lubrication system is to prevent the friction that builds up in the interference between moving parts in the engine.
Guldlock och de tre björnarna, en saga utan familj : En intervjustuide med sex personer verksamma inom förskolan angående skönlitteraturens roll i verksamheten och behovet av icke-heteronormativ skönlitteratur
Literature is an important part of the daily activity in preschool and it is also a powerful tool for reinforcing different norms.The purpose of this study is to explore, through qualitative interviews, for what purpose pedagogues in preschool use literature in their daily activity and what needs these pedagogues see for non-heteronormativity literature. The study also relates the needs that pedagogues see with the basic values presented in the Swedish National Curriculum for preschool.Literature is used in preschool for a wide range of purposes including; enriching the language, getting familiarized with the written language, show diversity, reinforce norms on how to be a good friend, as a starting-point for discussion, working with a theme or to have a fun time.The needs that the pedagogues see for non-heteronormativity literature can be divided in to three categories namely there is always a need, there is only a need when somebody requires that kind of literature to identify themselves with or there is only a need when somebody is being discriminated because of not belonging to the heteronorm.The need for non-heteronormativity literature being there always corresponds with the basic values in the Swedish National Curriculum for preschool and the recommendation that the basic values are visible in the daily activity of the preschool. The other needs doesn?t correspond with this, but it matches other parts of the Swedish National Curriculum for preschool..
Analys av webbservertrafik
ABSTRACT This essay is about traffic analysis of Web servers. The purpose is to investigate if companies analyse the traffic on the Web server and if they use this information to create more than simple statistic reports. The questions that we will answer are the following: ? How common is traffic analysis on the Web server among companies? ? Is the Web administrator limited in analysing the Web traffic, if the company has the website on a Web hotel? ? Does the company uses the results they get from analysing the traffic on the Web server for updates and changes on the Web page? To answer these questions we made a questionnaire investigation by telephone interviewing the companies? webmasters. The extent of the investigation was 20 companies in Blekinge.
En kreativ mötesplats ? Kristinebergs bibliotek och öppna förskolas relation till 1970-talets samhällsdiskussion
The purpose of this master?s thesis is to examine the activity at the library and preschool at Kristineberg (a part of the town of Borås) and its underlying approach. How do the activities agree with the ideological attitudes of the 1970s? To answer these questions I have carried out a case study based on qualitative interviews. The theoretical background includes ideas of the library, the community center and the cultural activity at the library.
Tankar om ett kök
The kitchen is one of the most important rooms in our homes. It is a place for social engagements, meetings between people and activity. How the kitchen looks today is a concept sprung from the Swedish kitchen standard of 1952. Eventhou this standard no longer exists it is a model of how kitchens are designed today. The kitchens most often sold today come from one of four major kitchen manufacturers in Sweden.My thesis investiges an alternative kitchen concept.
Årstidsdynamik för kvicksilver i ett sövattensediment :
The limit for mercury in fish, set by health authorities, is exceeded in about half of the lakes in Sweden. Methyl mercury (MeHg) is the most toxic form of mercury and accumulates in fish. Therefore transformation of inorganic mercury (Hg) to methylmercury (MeHg) is an important process that we need to understand in order to possibly counteract the negative effects of mercury in the environment.
The seasonal dynamics of mercury biogeochemistry is likely of great importance for the accumulation of MeHg in the aquatic food web. In thesis the chemical speciation and transformations of Hg and MeHg in bottom waters and sediments is followed in Ängessjön, a small lake located on the east coast in the middle of Sweden. The lake is not directly affected by any industrial pollution and concentrations of Hg in the sediment reflect the atmospheric deposition in this area, as well as processes taking place along the hydrological pathways from soil to lake.
Samples from sediment, bottom- and streamwater were collected in average every second month during the period Feb.
Analys av artificiella marktyper vid vatten med hjälp av GIS, Värmlands län 2007
On commission of the County administrative board in Värmland County a method was developed for analysis of the occurrence of artificial land use at lakes and watercourses. With artificial land use is meant land significantly affected by man. Two bases have been used to carry out the analysis. In one of the analysis the vegetation database and in the other GSD¹-Marktäckedata (land cover data) was used (this method has been used by County administrative board in Jönköping County).The analysis comprises all watercourses within Alsterälven river basin. The digital water bodies are created by the Swedish Meteorological and Hydrological Institute on the basis of GSD-Översiktskartan (general map).
Energieffektivisering genom förvärmning av flis till kokare med sekundärvärme
The Swedish pulp and paper industry meets higher demand for energy efficiencyi mprovements with increasing energy prices and changes in the Swedish renewable energy certificate system. One action of energy efficiency improvement is by using secondary heat, that otherwise would have been treated as waste heat, for use in a system with lower temperature demands. The aim of this Master´s thesis is to identify possible secondary heat sources in a typical Swedish pulp and paper mill and to investigate what economic benefits the secondary heat will provide when being used for pre heating of wood chips to a kraft digester.The Master´s thesis focuses on three secondary heat sources; dry warm air, warm water and moisture saturated warm air located inside the pulp or paper mill. Two types of kraft digesters are simulated within this study, a typical Scandinavian digester and a modern twin vessel steam phase digester.Due to quality aspects and low temperature level drying is the drying technology with dry warm air rejected. Using warm water in direct contact with wood chips increases the quantity of water to the evaporation plant and thus reduced pulp or paper production and is therefore also rejected.
En studie om spridning av modeller inom produktkalkylering
Syftet med vår studie är att finna faktorer till spridningen av
kalkylmodellerna Activity-based costing (ABC), Target costing (TC) och Kaizen
costing (KC). Detta gör vi genom att använda oss av kvalitativ ansats och
genomföra intervjuer vid sex tillverkande företag. Vi kan se influenser av
spridningen av modellerna ABC, TC och KC i studiens företag. Det har visat sig
att företagen tillämpar ?traditionell? produktkalkylering med inspiration av
ABC-modellen.
Pensionärers motionsvanor med fokus på styrketräningens roll för dem
Introduction: Elderly people have much to gain when it comes to physical activity andresistance training. Ageing is a process that every human being has to go through. The mostimportant physical attributes changes, when it comes to handle everyday life and ailment thatusually occurs in the later stages of life. Physical activity and resistance training may help thecommon problem among the elderly, when it comes to cope with issues of pain and strenuouseveryday life that occurs under this ailment. Objective: To identify a senior citizen´sperception about physical activity and attitudes about resistance training.
Use of feline TK1 as a biomarker in disease monitoring
Serum thymidine kinase 1 (TK1) activity is used as a tumor marker in disease monitoring in veterinary and human medicine. TK1, an intracellular enzyme, is involved in a salvage pathway of DNA precursor synthesis.
TK1 is used in DNA precursor production by catalyzing the transfer of the gamma-phosphate-group from a phosphate-donor to the 5?- hydroxyl-group of thymidine forming thymidine-monophosphate. Nucleoside monophosphosphates are finally converted into thymidine-triphosphates. TK1 activity significantly rises in the G1 and the S phase of the cell cycle.
Ridskolehästens hållbarhet : hur länge stannar hästarna i verksamheten?
SUMMARYThe riding school horse is the base for the riding school. Riding schools are looking for a suitable horse that meets their demands for exterior, age, education, temperament, price and sustainability. Many different aspects may define the sustainability of the riding school horse; of them is how long life the riding school horse has in riding school activity. Previous studies have shown that the riding schools requirements are 8-12 years life span in the riding school.The purpose of this study was to describe the Swedish riding school horse life span in riding schools and at what age the riding school horses were recruited, disposed and the reasons for disposal. Information about the riding school horse life span in riding schools and reasons for disposal can provide important understanding regarding the importance of health for the riding school horse, riding school economy and profitability in the riding school.