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667 Uppsatser om Temperature dependence - Sida 18 av 45
Deaktivering av metanisering katalysatorer
A titania-supported nickel catalyst was prepared and tested in methanation in order to evaluate its catalytic properties (activity, selectivity and specially, activity loss), and compare it with an alumina-supported nickel catalyst.The titania-supported catalyst did not only show higher stability than alumina, but also presented a different cause of deactivation, carbon formation. In addition, a kinetic model was obtained for the titania-supported catalyst, and a study of the effect of different operating conditions (temperature, composition and partial pressures of synthesis gas and water) on the deactivation rate and carbon formation of this catalyst was performed.
Utvärdering av VAV i nybyggt kontorshus
VAV (Variable Air Volume) system has been studied in a newly constructed office-building. The goal for the study has been to evaluate how the ventilations system work in practice, if adjustments can be made to achieve an more energy efficient system and to evaluate if other alternative ventilation systems is to be preferred in the further.The degree project has been executed at Helenius Engineering Firm who is working with the environment, media systems, HVAC and energy in buildings. The building that has been studied is owned and operated by Akademiska hus.Literature studies, visits at site, inventory, review of system documentation, energy analyses, interviews, key figures, LCC, sand energy- and indoor climate simulations has been made to study the building. Where appropriate some tools from Six Sigma have also been used.How to achieve an energy efficient system and a pleasant indoor climate is studied with human health and well-being as base for the indoor climate requirements. Technical support systems such as ventilation systems have to be designed so that an acceptable indoor climate can be achieved.
Mean value modelling of a poppet valve EGR-system
Because of new emission and on board diagnostics legislations, heavy truck manufacturers are facing new challenges when it comes to improving the engines and the control software. Accurate and real time executable engine models are essential in this work. One successful way of lowering the NOx emissions is to use Exhaust Gas Recirculation (EGR). The objective of this thesis is to create a mean value model for Scania's next generation EGR system consisting of a poppet valve and a two stage cooler. The model will be used to extend an existing mean value engine model.
Multinationella företag som demokratifrämjare. Illustrerat av H&M:s CSR-arbete i Bangladesh
The main argument of the thesis is that multinational companies (MNCs) can promote democracy through corporate social responsibility (CSR). MNCs hold some prerequisites giving them the means to create positive changes. But they lack one important prerequisite: knowledge about local conditions. Therefore the best CSR result is reached through partnerships with local NGOs.H&M's CSR-work in Bangladesh, including a partnership with the Bangladeshi women's rights organisation Karmojibi Nari, serves as an illustrating case. It is argued that the CSR-work promotes democracy through strengthening the civil society, through indirectly implementing national laws concerning labour legislation and human rights and through raising awareness about rights and legislation among the workers.The CSR process changes the terms for both NGOs and MNCs.
Företags hantering av konsumentdata : Speglar användares elektroniska fotspår förhållningssättet till integritet?
The essay concerns corporation?s usage and consumer?s attitude towards the phenomenon Big Data. The aim is to analyse whether corporation-management and future ambitions concerning consumer data coincide with attitudes and opinions of today's consumer, and how these opinions reflect consumer behaviour online. The essay is limited to focus on how companies use consumer data in order to better understand and improve the efficiency of their marketing. A self-composed analyse-model was created using previous studies concerning Internet-usage in Sweden, previous management analysis of corporations use of Big Data combined with theory of Cognitive Dissonance. A questionnaire was then created with the analyse model as foundation.
Habitatval, migrations- och furageringsaktivitet samt homing hos gädda (Esox lucius) härstammande från Österby myr, Gotland.
In this study the spawning migration activity, habitat choice (depth and temperature), foraging activity, duration of stay in the spawning site and homing-behavior was studied for anadromous pike (Esox lucius) in the wetland Österby myr, Gotland.The spawning migration was concentrated to dusk and dawn, a homing behavior was confirmed and there was no significant difference between sexes with respect to duration of stay. A difference in habitat choice and small variation in foraging activity between individuals was established..
Färdtjänst ur brukarnas synvinkel. Perspektiv på beroende, oberoende och tillit
This study concerns paratransit service in a relatively small municipality in Sweden. The aim of this study is to describe the user's experience of paratransit service. The question formulation is mainly built around the user's experience of paratransit service and their view on what impact paratransit service has on their lives. The empirical data consists of ten interviews with ten different paratransit service users with ages ranging from 25-95 years. The data has mainly been analyzed through concepts of independence, empowerment and trust.
The result of this study shows that paratransit service in many ways can be described as a crucial part of the users' lives.
PTAG - aktiv RFID-tag med GPS
Free2Move AB is developing products for the market within wireless communicationand identification, among those active RFID-tags. The company had an idea aboutproviding one of their active RFID tags with a GPS receiver and transmit positions viaan existing RFID protocol. Desire from the company was also the possibility to logpositions and measure temperature. The finished prototype should also be able to beactivated by movement. The company had proposal about components that were to beused in the project.
Vägen till den grönare sidan leder över forsen : En tematisk analys av destruktivitet och strävan efter konstnärskap i August Strindbergs Röda rummet
The aim of the essay is to analyze destructivity and the aspiration of artistry in August Strindberg´s debut novel Röda rummet. By the method of close reading the thematic analysis is performed. The method is also based on an hermeneutic way of looking at literature.A historical context is adapted and the characters are compared to historical descriptions of artists such as bohemians, decadents and dandys. The artists of the novel prove to be, like the bohemians of the 19th century, standing outside and against society, although the presence of relations and cultural exchange seem to be just as important. There is also an ambivalence to be found in their relationship with the city and it´s lifestyle.The question at issue is how the development of the characters´ artistry come about, and in what ways the characters are influenced.
Klinisk termografi som diagnostiskt hjälpmedel vid rörelsestörning hos häst :
Thermography is the assesment of the surface temperature of the horses body and it falls into the categori of physiological imaging. Thermography allows us to portray inflammation and changes in sympathetic tone in a graphical manner.
The purpose of this study was to review thermography in equine medicine and to evaluate thermography as an aid in the diagnosis of lamness in horses.
Thermography has been helpful to identyfy sprains, stress fractures, shin splints and soft tissue, tendon, ligamentous and nerv injuries and to monitor healing processes during rehabilitation. Routine thermography may reveal inflammatory responses prior to clinical signs.
In present study thermograpy gave especially valuabel information in two cases. In one horse reduced blood flow in a. saphena due to a thrombosis were visualised and in the other horse bilateral thoracolumbal radiculopati was diagnosed.
Med datorn som följeslagare : Perspektiv på datorers inverkan för lärare i ett En-till-En-projekt
In today?s society we depend on technology to perform the simplest tasks. Whether we are engaging in conversation with a friend or are navigating in traffic, we are likely to be found with some technological device in our hands. This dependence has grown over a period of time, and many of us have failed to reflect on the impact technology has had on our lives. The emergence of so-called One-to-One projects, where teachers and students gain access to a personal laptop, does however provide an excellent opportunity to do so.
Upplevelser av mötet med vården hos personer med missbruksproblematik
Alkoholkonsumtion och narkotikaanvändning ökar i världen idag och leder till konsekvenser för den somatiska sjukvården då patienter med missbruksproblematik blir mer vanligt förekommande. Personer med missbruksproblematik upplever sig ofta som tillhörande en stigmatiserad grupp och mötet med vården som något negativt. Syftet med studien var att undersöka upplevelser av mötet med vården hos patienter med missbruksproblematik. Litteraturstudien baseras på 11 vetenskapliga artiklar som analyserades. I resultatet framkom 3 kategorier, negativa upplevelser i mötet med vården, barriärer till att söka vård samt positiva upplevelser i mötet med vården.
Elevers tillämpning av källkritik på Internet
This paper, called Pupils' practice of source criticism on the Internet, is investigating pupils? use of source criticism. The main research question was: how much knowledge pupils from an upper secondary class have about the use of source criticism, regarding examining data from the Internet intended for assignments. Furthermore, developing a suitable method to investigate this was included. The main research question led to further sub questions that aimed to answer to what extent pupils consider source critique criteria as sender, aim, up-to-dateness, credibility and dependence.The study has been conducted by using mixed methods, both qualitative and quantitative methods.
Buller : Hur planeras en bullerfri stad?
Milosevic, S. 2014. Buller ? Hur planers en bullerfri stad?. Kulturgeografiska institutionen, Uppsatser, Uppsala universitet. This essay is about noise pollution caused by urbanization.
Integration på arbetsmarknaden : Ett sysselsättningsprojekt om arbetsmarknadsproblematik för invandrare
Integration of the labor is becoming increasingly topical, with increasing immigration. Labour market integration has been proved to be problematic, partly due to linguistic and cultural differences between the migrant's home country and Sweden. Difficulties with labour market integration have resulted in high numbers of unemployment and dependence on social welfare. Projects VIAM is an employment project conducted by Folkhälsobyrån AB in Västerås, aimed at finding jobs for welfare dependency immigrants. The purpose of this study is to investigate how the informants on Folkhälsobyrån and administrators on the Social service in Västerås has experienced the work of the project VIAM, development issues and the informant´s and administrator´s perception of factors that are influencing immigrant´s employment situation in Västerås.