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271 Uppsatser om Laboratory - Sida 12 av 19
Comparison of real-time PCR assays for screening of meticillin-resistant Staphylococcus aureus
Staphylococcus aureus belongs to the normal flora. Many healthy people are colonized by the bacterium mainly in the nose but also on the skin and on other mucous membranes without showing symptoms. After damage to the skin, the bacterium can enter the wound and cause infections. Methicillin-resistant S. aureus (MRSA) is resistant to b-lactam antibiotics such as penicillin and methicillin.
Utveckling av en USAR räddningsrobot för mänskligdetektering och lokalisering
SammanfattningDetta examensarbete behandlar design och vidareutveckling av en mobil pneumatiskräddningsrobot som tidigare utvecklats vid Kitagawa/Tsukagoshi Laboratory på TokyoInstitute of Technology i Japan. Räddningsrobotens huvudsakliga användningsområde ärsom hjälpmedel vid naturkatastrofer, till exempel vid jordbävningar. Målet medräddningsroboten är att kunna detektera och lokalisera överlevande som har blivitinstängda av rasmassor inuti skadade byggnader. Syftet med examensarbetet har varit attutöka robotens förmåga att kunna detektera människor samt att utveckla ettlokaliseringssystem för att kunna mäta avståndet till offren.Examensarbetet inleds med en bakgrundsstudie som undersöker befintliga teknologier påmarknaden samt aktuell forskning inom ämnet. Bakgrundsstudien resulterar i olikalösningsalternativ som presenteras i rapporten.
Evaluation of ELISA and rapid test for the analysis of fecal Calprotectin
ABSTRACTBackground Calprotectin is a protein found in the cytoplasm of neutrophile granulocytes. In the course of inflammatory bowel disease (IBD), calprotectin is released during chronic inflammation in the gut. Activation of neutrophils during the inflammation is followed by activation and secretion of pro-inflammatory molecules such as calprotectin. Calprotectin is stable in stool up to 7 days and can therefore be used as a non-invasive marker for diagnosis, treatment and measurement of the disease activity in patients with IBD. The most common method for analysis of calprotectin concentration is ELISA.
Itrakonazol till häst : en farmakokinetisk möjlighet?
Itraconazole is a third generation azol, a fungicide which acts by inhibiting ergerosterol synthesis in the fungal cell membrane, and thereby disturbing fungal regeneration. It has proven to be less toxic, to have a broader spectrum of activity and to be more potent than its predecessor ketoconazole. Itraconazole is only available in therapheutics approved for human use. Pharmacokinetic studies has been performed in humans, dogs, cats and Laboratory animals. Although itraconazole has been used tentatively with good effect against fungal infections in horses, no pharmacokinetic studies have yet been done.
African swine fever in Uganda : description of a recent outbreak and possible differential diagnoses
This study had two different aims. The main aim was to investigate the dynamics and impact of African swine fever (ASF) on a farm in Uganda during a recent outbreak through a case study. The second aim was to estimate the presence of two important differential diagnoses of ASF: Classical swine fever (CSF) and Porcine Reproduction and Respiratory syndrome (PRRS).The field and Laboratory based case study of the farm level dynamics of ASF virus during a recent outbreak (October-December 2010) on a farm in the district of Mityana, Uganda, was conducted, using interviews, ELISA and RT-PCR. The financial impact on the farm was also estimated. The impact of the outbreak was profound.
FE-modellering av hjullast på sandwichpanel
This bachelor thesis in mechanical engineering was performed during the spring2015 in collaboration with Composite Consulting Group in Laholm. TheComposites Consulting Group works mainly with design and details of differentcomposite projects, their main area is FE-calculations, 3D-modelling andmechanical tests with composite materials.The aim of this bachelor thesis was to simplify the calculation process of solidmechanics for sandwich panels by simulation with computer software. The goalwas to decrease the time for the design and calculation process of the constructionand the cost of the practical tests. Our task was to build a static three dimensionalmodel with the computer software Abaqus, where the result should correspondwith the practical pressure tests in Laboratory.The project started with collection of material data from Composites ConsultingGroup and by learning the software Abaqus, simultaneously a specification wasdeveloped in corporation with the company. Later on, a static wheel pressuremodel in the software Abaqus was produced which simulated the behavior of thesandwich panel during static wheel-pressure by a pallet truck.
Individuell tillväxt och substratval hos en lokalt differentierad population av Asellus aquaticus
Local differentiation may occur during a short period of time and is part of the formation of new species. The isopod Asellus aquaticus is an example of a species in which local adaptation has occurred during a short period of time. An establishment of stonewort (Chara spp.) vegetation in Lake Tåkern (in the 2000) resulted in two different Asellus ecotypes; a lighter pigmented, smaller one that lives among stoneworts grazing periphytic algae, and a darker, larger ecotype that feeds on decaying leaves in reed (Phragmites australis vegetation. The purpose of this study was to examine whether there are differences in growth between ecotypes, depending on whether the food was periphytic algae or leaves, and to study the choice of substrates between the two food types. For the study, animals from both habitats were brought in from Lake Tåkern to the Laboratory.
Feeding preferences and foraging in Larvae of Manduca sexta and Spodoptera littoralis : a laboratory study based on olfaction
Larvae of Lepidopteran Manduca sexta and Spodoptera littoralis are pests of economical importance in several horticultural and agricultural crops. Knowledge of
insect feeding preferences and behavior is crucial in order to find economically and ecologically sustainable solutions to the problems caused by these herbivores.
The aim of this thesis was to study the behavior and the induced feeding preferences in larvae of M. sexta and S. littoralis when reared on certain host plants.
The hypothesis was that larvae of M. sexta would have an innate preference for plants of the Solanaceae family and therefore discriminate the previously experienced nonhost
when faced with the choice between a true host and the previous food source.
Resistenta rapsbaggar :
Oilseed rape crops are an important in southern Sweden because of the high intensity
of wheat growing. Pollen beetles are the most important pest in oilseed rape and
causes often economic losses. Therefore it?s of great importance that we can control
the population density, e g by using insecticides if necessary, to avoid mayor yield
losses.
In year 2000 pollen beetles were numerous in the province of Östergötland. The
farmers sprayed with insecticides several times, but with low effects on the beetles.
Field trials and Laboratory experiments showed that pollen beetles had developed
resistance against pyrethroids.
Kväveomsättning i gräsmark med olika artantal och artsammansättningar :
This study was carried out at the Swedish University of Agricultural Sciences, Dept. of
Agricultural Research for Northern Sweden. The aim of the study was to determine how plant species richness and diversity influence the nitrogen pools and nitrogen fluxes in the soil. Plant and soil samples from a biodiversity experiment in grasslands were used. Thirty plots with 12 grassland plant species (legumes, grasses, and non-legume herbs), combined from 1-12 species were investigated.
Företagshälsovård och beställarkompetens ur ett verksamhetsteoretiskt perspektiv
Halmstads kommun har sedan två år använt sig av den externa företagshälsovården Previa i beställningsarbetet gällande företagshälsovårdsinsatser och efterfrågar en undersökning av detta beställningsarbete. Syfte: Syftet med denna uppsats är att ur ett verksamhetsteoretiskt perspektiv undersöka beställare och leverantörers beskrivningar av beställarkompetensen av företagshälsovård och att skapa förutsättningar för ett expansivt lärande. Metod: Undersökningen genomfördes genom kvalitativ forskning där en egen metoddesign inspirerad av Change Laboratory och fokusgruppsdiskussioner användes. Två diskussionsträffar genomfördes tillsammans med beställare och leverantörer av företagshälsovård där bland annat motsättningar och positiva aspekter av beställningsarbetet diskuterades. Teoretisk referensram: Beställningsarbetet belystes genom hela studien ur ett CHAT-perspektiv där yttre faktorer ansågs ha betydelse för kvaliteten på beställningsarbetet.
Hybridlärkens tillväxt i Snogeholm : hur påverkas produktionen i blandbestånd jämfört med trädslagsrena bestånd?
The hybrid larch (Larix x eurolepis Henry) is a fast growing tree species and was introduced in Sweden for about 50 years ago. The high growth and expected resistance to diseases are probably the main reasons of introducing the tree species into the Swedish forests.
The purpose of this thesis was to document the production of hybrid larch planted in the Snogeholm landscape Laboratory and to compare the production in the pure hybrid larch stand with the mixture together with pedunculate oak (Quercus robur).
The data collection in Snogeholm since the establishment has been carried out by the Swedish University of Agricultural Science (SLU). The fieldwork for the thesis was carried out in 3 stands, containing hybrid larch, pedunculate oak and a mixture of hybrid larch and pedunculate oak, in order to be able to compare the total stand production of the areas.
The results show that the total production of hybrid larch in the mixed stand only is 35 % compared with the total production of hybrid larch in the pure stand. Therefore, the hypothesis that the total production of hybrid larch is equal to the planted mixture with pedunculate oak was rejected.
The other hypothesis that the total production of a 2 hectare large stand containing a mixture of hybrid larch and pedunculate oak would be greater than the total production of two pure stands of 1 hectare containing hybrid larch and oak each was also rejected. In the studied case the total production was 45 % greater if hybrid larch and pedunculate oak was planted in pure stands.
The results from the case-study only indicate that the total production of hybrid larch and oak under the investigated conditions can be higher when planting the two species in pure stands compared with a mixture of the two species.
Utvärdering av måluppfyllelse för Polisen och SKL : en studie av upprättandet av ett gemensamt servicecenter för ekonomi- och personaladministration
Inom Polisen finns ett behov av att renodla verksamheten, då de med åren fått ökade administrativa kostnader. Ett projekt startades inom Polisen och Statens kriminaltekniska laboratorium, där all ekonomi- och personaladministration ute på myndigheterna samlades på ett och samma ställe i ett servicecenter förlagt till Linköping. Syftet med studien är att utvärdera hur måluppfyllelsen för de mål som sattes upp för projektet upplevs. Studien är av kvalitativ karaktär, med en fallstudieliknande ansats, där 18 intervjuer genomfördes med de anställda på servicecentret, samt flertalet ur projektets styrgrupp.Resultatet av studien är att organisationen har kommit långt med måluppfyllelsen, men att man inte har nått riktigt ända fram då studien visar att åtta av elva mål är helt uppfyllda i nuläget. Tre mål är alltså ännu inte helt uppfyllda, vilket kan bero på att många av målen är otydliga, kan tolkas olika och inte är så väl förankrade hos de anställda.
Förbränning av pellets framställda av defibrerad granråvara :
Fuel pellets are in Sweden mainly produced from sawdust and cutter shavings. Before the pelletising process the raw material is dried to attain consistent moisture content and ground up in a hammer mill. In the densification process (pelletising) the ground material is forced through holes in a rotating die. This heats up the wood particles which cause them to soften and self bond. After the process the pellets are cooled, sieved and bagged.
The milling process creates a wide range of particle sizes.
Reflekterande eller reproducerande matematik : en jämförande studie mellan två undervisningsmetoder i matematik, det laborativa och det traditionella
In each classroom there is a teacher with good intentions wanting what´s best for their pupils. But grades and tests in mathematics from 2009 in Sweden shows there is a crack between the subject being taught and the learning child. The purpose with this research is to find an understanding from a teaching and learning perspective of which teaching method is more suitable for teaching and learning mathematics by doing a comparison between two methods. The main question is:What are the advantages and disadvantages of the traditional and the Laboratory method of teaching, supported by the two keywords teaching method and learning?This C-paper is based on a qualitative research aiming to gather an in-depth understanding of human behavior.