Sökresultat:
1087 Uppsatser om Laboratory tests - Sida 41 av 73
Stress : En gransking av studenters stressnivå - Praktik och icke praktik
Practical and theoretical learning are methods that are used in schools as a way to prepare students for the working life. Within the practical learning knowledge is not only acquired to learn in practice, but the students must also be able to apply their theoretical knowledge to what he/she does. Against this background, the aim of the study was to investigate the importance of practical learning for students in college / university level and how they are experiencing the stress that may arise out of the loss of practical learning during their education, as well as their vision for working life after completing their education. The population of the study consisted of N = 36, which 18 of these had used both practical and theoretical learning and the remainder had only used theoretical learning. The method was a questionnaire survey with a high proportion of fixed alternative answers according to likert scales.
Utvärdering av fosforläckageefter stallgödsling med hjälp av lysimeterteknik : Evaluation of phosphorus leaching aftermanure application using lysimeter techniques
Based on laboratory studies with lysimeters, the concentrations of dissolved reactive phosphorus(DRP) and particulate phosphorus, which is the main part of other P (OVRP), has been studied inpercolating water. The experiment was conducted through irrigation of small soil columnscontaining clay topsoil from an experimental field in Västergötland. Three rain simulations wereconsecutively performed. DRP concentrations in the percolating water ranged between 0.2 - 0.3mg·Lclearly related to the phosphorus concentration in the soil, measured in a soil extract ofammonium lactate (P-AL). Concentrations of OVRP were relatively low and ranged between0.12 and 0.16 mg·Lwas not proven and the experiment may reflect how a relatively slow percolation of water mayrelease DRP.
Fördelning av resultat på den svenska börsen
This paper replicates a test performed by Burgstahler and Dichev (1997), which identifies a kink in the frequency distribution of earnings for companies listed on American stock exchanges. Their claim, that the kink is evidence of earnings management, has however been dismissed as a methodical consequence. To address this concern, this paper not only replicates the test in general, but also performs tests on a split sample, where founding family-owned companies are separated from the others, since earlier research has shown that founding family ownership is correlated with less earnings management. The results are in line with the findings of Burgstahler and Dichev, with a significant kink in the frequency distribution in the general test. The findings also show that the significance of the kink increases in the non-family-owned sample, while it disappears in the family-owned sample.
Evaluation of Different Extraction- and Analysis Methods for Calprotectin in Feces
Background Calprotectin is a protein expressed in the cytoplasm inside the neutrophile granulocytes. During inflammatory bowel disease (IBD), the neutrophile granulocytes are involved in a complex interaction at the inflammatory area where they die and release their content into the intestinal lumen. Therefore, calprotectin in stool is a suitable marker for diagnosis and measurement of the disease-activity in patients with IBD. The most commonly used method to detect calprotectin in stool is ELISA, but the process of manual preparation of stool samples is time-consuming.Aim The objective of the study was to evaluate an extraction method that could replace manual preparation of fecal samples and to compare different methods for measuring Calprotectin in stool using two ELISA-methods from two manufacturers and one rapidtest.Methods For extraction of calprotectin from stool samples we used sample collector tubes from Epitope Diagnostics and fecal preparation kits from Roche. Two different ELISA-kits for measuring calprotectin concentration in stool were compared.
PRAKTISK BESTÄMNING AV KLÄMKRAFT OCH FRIKTION I SKRUVFÖRBAND
This report reflects an examination work performed for Getrag All Wheel Drive AB during the spring of 2005. Among the companies range of products there exists some concern regarding the amount of clamping force and friction on bolted joints caused by the assembly torque.The aim of this project has been to determine if there is a simple way in which to identify and then practically apply testing methods for clamping force and friction through utilization of existing testing equipment.Three separate methods of clamping force and friction determination have been tested in rear drive unit, RDU, at a 30 Nm assembly torque. A fourth and final method, screw elongation with ultrasound, has been used as reference. The methods are:?Torque-Tension test.?Screw elongation with micrometer.?Joint stiffness test.?Screw elongation with ultra sound for reference.The results from tests can be viewed in table below.MethodTorque-TensionMicrometerCs=318 kN/mm Assembled with torque wrenchMicrometerCs=318 kN/mm Assembled on lineUltra-soundCS=311 kN/mm Ultra- soundCS=318 kN/mm Joint stiffnessTheoreticalClamping force-21,8 kN17,6 kN17,3 kN17,6 kN17,1 kN17,3 kNFriction-0,110,1470,1530,1470,1520,149.
Vad begränsar lärarens handlingsutrymme? : En studie byggd på samtalande lärare, analyserad med Gunnar Bergs teori som ram
In order to get a better understanding of the interaction between employees and their technical work tools one needs to know what factors influence the interaction. The purpose of this study was to examine if there is a correlation between the personality traits Extraversion (E) and Neuroticism (N), tested with Eysenck Personality Inventory (EPI), and experience of the new Intranet among employees at The Swedish National Transport Administration (SNTA), and also to gather information of employees? opinions about the new Intranet. A survey, containing questions about the Intranet and a personality test (EPI), was posted on SNTA?s Intranet for eight workdays (N = 88, females = 53, males = 35).
Konsten att kränga en kommun : en diskursanalys av en kommuns externa kommunikation
University of VäxjöSchool of Social SciencesBachelor Thesis in Political ScienceTitle: ?Sverigedemokraternas valframgångar 2006 ? En ulv i fårakläder??Author: Emma Haraldsson and Åsa NeuschützTutor: Emil UddhammarThe aim of this study is to explain Sverigedemokraterna?s electoral success in 2006 and the essay assumes that some form of change has occurred. To study this change two hypotheses have been constructed. The first hypothesis concerns the change within Sverigedemokraterna and the second hypothesis concerns the change of the Swedish voters attitudes.Kirchheimers catch-all theory is used to explain the change in Sverigedemokraterna. The catch-all theory states that parties have to change their structure to maximise the number of votes.
Triage - hälsoekonomi : resursallokering och kostnadsberäkning för olika proriteringsnivåer inom akutsjukvård
When a person arrives at the emergency ward at the Uppsala University Hospital with his or her symptoms he or she explains the problems and then a priority process starts. The staff evaluate at which emergency level the patient is located in a model called Triage. The Triage model helps to decide the priority need and is based upon templates which point out in which of the 5 categories a patient is to be placed, to eliminate any future risk regarding his or her health. A lower triage level means lower priority but implies better health when the evaluation takes place. To obtain optimal effect of the Triage model the evaluation of symptoms must be reproducible so that patients with the same symptoms are placed at the same triage level regardless of whom among the staff conducts the evaluation.
The purpose of the study was to see if the resources are allocated based on priority level of the patients.
Nedskrivning av goodwill - en skyldighet eller möjlighet?
The purpose with this thesis is to demonstrate that other factors than the existing set of rules could influence the Management Group?s decision in regards to depreciation of goodwill. We have explained the conflicts between the management group and the stakeholders by using the Agency Theory and the Stakeholder Model. We have used the Positive Accounting Theory to describe how the management group?s opportunistic behaviour decides which accounting method to use.
Experimentell jämförelse av Cassandra, MongoDB och MySQL
Context. Performance and resource usage is often an important factor for
database driven services. Depending on the purpose of the application, choosing
the wrong type of database may require
unnecessary hardware upgrades or replacements.
Objectives. This study investigates the differences in performance and resource
usage between
different SQL- and NoSQL-databases. The study is a comparison that focuses on
how the databases
perform in different applications.
Val och kompensation : En studie av lärares arbetssätt med materialet ABC-klubben
This study, based on the socio-cultural theory of the book as a mediating tool, examines how four teachers say they work with the reader ABC-klubben. This is done with a focus on how they reason about choosing the level of readers for the pupils and about what compensation, if any, they make for pupils who read the simpler book and therefore miss the more difficult words and expressions. The result shows that all the teachers say that they take the pupils? motivation for and pleasure in reading as an important ground for the decision as to which reader a pupil should use, and that this decision is taken with a focus on the individual. When it comes to compensation for the pupils who read the simpler book, the teachers do not describe consistently focused work on this, but they describe a similar way of working whereby they nevertheless acquaint these pupils with the more difficult book and the harder words and expressions.
Talmotoriska avvikelser vid Parkinsons sjukdom och vid stamning: en jämförande studie
The following study examined whether similarities in motor speech deficits in Parkinson?s disease and in developmental stuttering could be observed. Furthermore, intelligibility was examined. Assessments of 16 people with Parkinson?s disease, 35 people with developmental stuttering and 49 matched controls were performed with the tests Dysartribedömningen and the Swedish Test of Intelligibility.
AUTOMATISK PAN/TILT-KONTROLLER FÖR ANTENNINRIKTNING
This report describes the design and construction of a prototype that automatically aims a microwave link towards a target. The link, that is located on a mobile aerial mast, is used by Saab Training Systems as a part of an infrastructure network. The report also discusses the development of a GUI that communicates with the control unit by Bluetooth.The control unit, called Pan/Tilt-controller, controls the position of the link by stepping motors. One motor controls the azimuth angle and the other one controls the elevation angle.By a GUI the operator enters the coordinates on its own position and the targets position. Hereafter a bearing is calculated and it will be sent up to the control unit.The control unit will sense its own direction by a magnetic sensor that works as an electronic compass.
Personlighetstyper och upplevelse av ett nytt arbetsstöd : undersökning gjord på Trafikverkets Intranät och anställda
In order to get a better understanding of the interaction between employees and their technical work tools one needs to know what factors influence the interaction. The purpose of this study was to examine if there is a correlation between the personality traits Extraversion (E) and Neuroticism (N), tested with Eysenck Personality Inventory (EPI), and experience of the new Intranet among employees at The Swedish National Transport Administration (SNTA), and also to gather information of employees? opinions about the new Intranet. A survey, containing questions about the Intranet and a personality test (EPI), was posted on SNTA?s Intranet for eight workdays (N = 88, females = 53, males = 35).
Bildbaserat informationsmaterial : Visuell information som hjälp för ett komplicerat betalsystem i kollektivtrafiken.
I got interested in this subject when I came in contact with Västtrafiks new paymentsystem myself during my visits in Gothenburg. I suspected problems with the informationmaterial regarding it and others seemed to share my opinion that the payment system wasdiffcult to understand. When I contacted Västtrafik and asked them about the paymentsystem they confirmed that some understanding diffculties had occurred. With thatconfirmation I decided to make it my project to look in to the matter.Some methods were used to identify the problems. The methods could again confirm thatthere were some problems with the payment system and that the information material wasa vital reason.