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351 Uppsatser om Experimental - Sida 7 av 24
Hydrolys av primärslam för förbättrande av biologisk fosforreduktion vid behandling av hushållsavloppsvatten [Hydrolysis of primary sludge for enhancement of biological phosphorus removal in household wastewater]
Hammarby Sjöstad is a new district of southern Stockholm built with focus on reduced environmental impact by recirculation of materials and sustainability. The environmental goals aim to cut the water consumption by half and a separate storm water treatment. Thus, the wastewater will be more concentrated and will originate from the households only. The Sjöstad project includes the idea of a local treatment plant for the household wastewater. To evaluate this possibility, Sjöstadsverket, an Experimental treatment plant was constructed.
Biological control of powdery mildew in greenhouse produced cucumber : an evaluation of two microbiological control agents
Powdery mildew is a serious problem in both field and greenhouse cucumber production and
can cause serious infection and radically reduced yields. Today, powdery mildew is the main
disease in greenhouse produced cucumber.
Disease control should preferably be both efficient and environmentally friendly, which is not
easy to achieve at all times. Alternatives to chemical control of powdery mildews are biological
control, physical control, non-fungicide control and cultivation of resistant or tolerant varieties.
Biological control can be described as the suppression of damaging activities inflicted
of a harmful organism by one or more other organisms, which are called antagonists or natural
enemies. In Sweden, there are currently no registered biological control products available
to control cucumber powdery mildew.
The aim of this study was to investigate the effect of two biological control products in order
to evaluate their ability to prevent or reduce powdery mildew infection to an acceptable level
in greenhouse produced cucumber. In the experiments, different application regimes were also
studied.
Utvärdering av EFFA-Västers föräldraprogram för föräldrar med barn i åldern 2-4 år. : En kvalitativ och kvantitativ studie med fokus på programinnehåll, effekter samt implementering.
AN EVALUATION OF EFFA-VÄSTERS PARENT PROGRAMME FOR PARENTS WITH CHILDREN 2-4 YEARS- A qualitative and quantitative research focused on content, effects and implementationAuthors: Fritz, Jesper & Johansson, LinaSupervisor: Koutakis, NikolausÖrebro UniversityAcademy of Law, psychology and social workSocial Work ProgramSocial Work 41-60 pointsC-essay, 15 pointsAutumn term 2008AbstractThis study is written on commission by The Unit for prevention which is a part of the Social welfare Services in the district of Örebro. The social work practice carried out by the unit is based on universal prevention, which includes providing parent programmes. The aim in this study is to describe and evaluate the EFFA-Väster parent programme, which has been compiled by social workers working at the unit, with regard to the content, effects and implementation of the program. The study is based on a non-Experimental inquiry of an Experimental group which has been subjected to a pre- and post test. Further, observations has been made of every program session to examine whether the program is implemented in accordance with the intention and how the program is received by the participants.
Does social activity and management routines affect the horses interest for humans? :
This work focuses on the relation between human and animals and especially on the relation between horses and human. I have brought up the human och horse relationsship, today, and in history and wrote about the behaviour of the horse. Some older studies with human and animal interaction, including animals like dog and cattle are discussed. I have also discussed physiological parameters that might influence the bond and the interaction between human and horse and some critical aspects concerning the methodology when studying this kind of physiology.
The purpose of the Experimental study was to analyze if common management routines and grooming of horses increases horses interest in making contact with humans. Many horse owners feel that they have a good connection with their horse and factors that can influence the relationsship could be physical contact, feeding or some challange that make the horse trust the human.
Optisk undersökning av dieselsprayer från en höghastighetsroterande insprutare
There have been changes in Earth?s climate system on both global and regional scale since the pre-industrial era and some of these changes are due to human activities such as the combustion of fossil fuels. This calls for the development of engines with a higher efficiency and less harmful emissions. One interesting concept is the Homogeneous Charge Compression Ignition (HCCI) engine, which has the advantages of potentially low emissions combined with high efficiency. However, HCCI with diesel fuel requires a relatively long fuel/air mixing time to ensure a "homogenous" charge.
Evaluating six crop mixes used for game fields in southwest Sweden : biomass production, fallow deer preference and species diversity
Game fields are one way to divert animals away from sensitive areas, create shelter and forage, and also to increase the biological diversity. In this study I investigated how the plant composition in six different crop mixes used for game fields affected the biomass production, biomass consumption and biological diversity at the Koberg estate in southwestern Sweden. Six Experimental fields were used and each field contained six plots, approximately 1500 m2 each, that was sown with a different crop mix. The crop mixes ranged from a pure grass mix (A), 70 % grass and 30 % leguminous plants (B), 53 % grass, 21 % leguminous plants and 26 % other herbs (C), 100 % leguminous plants (D) to the most complex mixes constituting of 91 % leguminous plants and 9 % other herbs (E) and 87 % leguminous plants and 13 % other herbs (F). The fields were cut weekly during the summer in 2010, to estimate weekly biomass production.
Ljusets betydelse för rotknoppars groningsvillighet i åkermolke (Sonchus arvensis L.)
This study is about how changed light conditions induce dormancy in plants. It is divided in two parts. First a literature study where quantification of light, the concept dormancy, photoperiod and light quality are discussed. Second an Experimental part, where the importance of light for sprouting capacity in root buds of perennial sow thistle (Sonchus arvensis L.) is investigated.In the science in how flowering in plants are induced the concepts short day/long day plants and light dominant/dark dominant are well-established. These concepts can also be applied to how light induce dormancy in plants.
Bestämning av lägsta luminans för utrymningsskyltar
This report is based upon an Experimental study of exit sign luminescence in different environments. The purpose is to evaluate the lowest luminescence of an exit sign, based upon Swedish regulations. Scientific experiments have been conducted in a controlled environment, where exit sign luminescence was graded by an evaluation group. The results of these have been verified by similar experiments that took place in two department stores. The final result of the study is guidelines for appropriate exit sign luminescence in different environments..
Att rekonstruera förhistoriska odlingsförutsättningar : första steget i en metodutveckling.
The aim of this work is to take the first step into a development process, with the intention to find a way of making prehistoric soil fertility a variable in archaeological landscape analysis. A pilot study is performed on the Mälar basin area, where four topographical and geological factors are reclassified and then combined, resulting in a map which expresses a relative indication of agriculture potential. The map is then compared to the distribution of Migration Period graves and gold finds. This, however, does not mean that the technique is tied to a certain prehistoric period. Because the work is intrinsically Experimental, the technique as a whole is finally discussed and evaluated, and suggestions of improvements and further studies are made..
Effekten av individanpassade sulor hos personer med arbetsrelaterade besvär i ländrygg och nedre extremitet: En Single Subject Experimental Design (SSED)
Introduktion/bakgrund: På ett företag där det förekommer truckar skall personalen enligt lag använda truckskor som skyddsutrustning. I nuläget använder personalen inte sina truckskor på arbetstid eftersom de anses vara obekväma och öka deras besvär från kroppen. Det har visat sig i en rad olika studier att användandet av sulor i skorna kan reducera besvär ländrygg och nedre extremitet. Syfte: Syftet var att studera vilka effekter en individanpassad sula kan ge på arbetsrelaterade besvär i ländrygg, höft, knä eller fot, hos personal med stående arbete. Metod: Studien genomfördes som en Single-System Experimental Design (SSED) med ABA-design.
FE safety analysis of a high speed wood planer cutter. An alternative method to achieve the requirements of EN847 standard
In the last decades, high speed cutting has become an attractive technology in the wood industry. The possibility of reducing global costs in addiction with an increase in productivity, were the main reasons for the enlargement of the use of this technology. As usual, these advantages are accompanied by disadvantages that should be carefully analyzed. If on the one hand cutting forces are reduced with increasing cutting speeds, on the other hand, the centrifugal forces affecting the tool are higher. Exposed to such high loads, there is a considerable risk of tool failure that embeds hazards for both machine and workers.
Effekter av högt kaliumintag på magnesiumbalansen hos mjölkkor :
Magnesium is one of the most important minerals in the body and it participates in many essential processes, such as energy metabolism and protein synthezis. Magnesium deficiency in cattle may occur when they are let out for pasture in the spring, and is associated with tetany, known as grass staggers. A high yielding dairy cow often loses more magnesium daily in the milk than she has available in the body, and magnesium thereby needs to be provided in the feed to prevent the cow from being affected by deficiency symptoms.
The uptake of magnesium is mainly located to the rumen and is not regulated by hormones. The surplus is excreted in the urine by the kidneys.
Knacksensorplacering på lastbilsmotor
This work is an Experimental study where knock sensor placements are investigated using engine tests. The aim is to studythe quality of the signal from knock sensors and how the signal for engine control is affected at different sensor locations on Scanias, engine DC13. To find out at witch position on the engine youcan get a usable signal for engine control, the engine is running while the knock sensors with advanced measurement equipment is connected to the engine. Evaluation of signals from the knock sensors are made in the computer program Matlab. The program is producing a seriesof plots, from these plots it is visually possible to draw conclusions and find connections.
Effekten av en kortisoninjektion i bäckenligamenten på personer med långvarig ländryggssmärta : en studie enligt single-subject experimental design
Syfte och frågeställningarSyftet med studien var att undersöka effekten av en kortisoninjektion i bäckenligamenten på patienter med långvarig ländryggssmärta.MetodStudien genomfördes utifrån en single-subject Experimental design med sex deltagare med långvarig ländryggssmärta. De utfallsmått som användes var smärtskattning (Numerical Rating Scale, NRS), skattad smärtrelaterad aktivitetsbegränsning (Oswestry Disability Index, ODI), skattad rörelserädsla (Tampa scale of kinesiophobia, TSK-SV), rörlighet (Fingertip-to-floor), funktion genom ett dynamiskt balanstest (Star excursion balance test, SEBT), funktionstest (sit-to-stand) och uthållighetsstyrketest (modifierat Biering- Sørensen), samt fysisk aktivitetsnivå mätt med accelerometermätare. Deltagarna genomförde fem testtillfällen innan och fem eller sex testtillfällen efter intervention. Vid sista besöket skattade deltagarna förändring av besvär enligt global index of change. Resultaten analyserades på individnivå genom visuell analys av trender och nivåskillnader i grafer, statistisk analys av graferna genom 2 SD-metoden, i kombination med deltagarnas subjektiva beskrivningar av eventuell förändring.
Reklamprat: effekter på upplevt reklamvärde och köpintention
This thesis provides the first test of the effects of ?advertising talk?, i.e. comments, discussions and opinions about advertising. Despite its prevalence quantitative research on advertising talk has been scarce and this study is thus an attempt to fill in some blanks. Hypothesizing that advertising talk will enhance consumer-perceived advertising value as well as purchase intentions and that the effects are more pronounced for talk generated by consumers as compared to marketers, I use a fictional campaign to measure responses in an Experimental study.