Search results for "520"
showing 10 items of 250 documents
Redesign of Utility Robot for Carbothermic Test Reactor
2015
Masteroppgave i mekatronikk - Universitetet i Agder, 2015 Production of aluminum based on a carbothermic reaction is an exciting field of research. It could potentially reduce the energy consumption of aluminum production drastically. Alcoa Norway Carbothermic has been involved in the field of carbothermic aluminum research since 1998. As a part of development of their newest carbothermic test reactor, the Hot Bowl reactor, Alcoa Norway Carbothermic has proposed a thesis regarding redesign of a machine used to lower different types of measuring equipment down into the reactor, called the utility robot. This thesis describe the process leading up to a new utility robot solution. The new util…
Obeticholic acid for the treatment of non-alcoholic steatohepatitis: interim analysis from a multicentre, randomised, placebo-controlled phase 3 tria…
2019
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New determinants of olfactory habituation
2017
AbstractHabituation is a filter that optimizes the processing of information by our brain in all sensory modalities. It results in an unconscious reduced responsiveness to continuous or repetitive stimulation. In olfaction, the main question is whether habituation works the same way for any odorant or whether we habituate differently to each odorant? In particular, whether chemical, physical or perceptual cues can limit or increase habituation. To test this, the odour intensity of 32 odorants differing in physicochemical characteristics was rated by 58 participants continuously during 120s. Each odorant was delivered at a constant concentration. Results showed odorants differed significantl…
Design av en offshore gangbru i fiberarmert polymer
2018
Masteroppgave bygg BYG508 - Universitetet i Agder 2018 Innovation and development are essential for a market in demand of faster, lighter and stronger solutions. As a material with high strength to weight ratio, and good possibilities of being premade, fiber reinforced polymers can meet those requirements. However, it has yet to challenge concrete, steel and aluminum as a structural material. This is the underlying challenge for the problem statement of this assignment, to construct an offshore gangway using fiber reinforced polymers. The design concept is based on existing steel and aluminum constructions within the size range of 25- 30m fully extended. To solve the problem and answer the …
A study of densified biochar as carbon source in the silicon and ferrosilicon production
2019
Abstract Biochar pellets were investigated as renewable reducing agents in substitution of coal and coke in the silicon and ferrosilicon production, where a high reactivity, good mechanical properties and low feedstock costs are appreciated. The usage of pyrolysis oil as binder was investigated as way to improve the quality of the pellets. Norway spruce biochar produced at 500, 800 and 1100 °C, was pelletized blended with pyrolysis oil and lignosulphonate. A second heat treatment was carried out at the same temperatures to evaluate the interaction between biochar and pyrolysis oil and to imitate the thermal stability of the pellets when used in a furnace. Density, tensile strength and mecha…
Oil whip-induced wear in journal bearings
2014
Published version of an article in the journal: International Journal of Advanced Manufacturing Technology. Also available from the publisher at: http://dx.doi.org/10.1007/s00170-014-5805-8 This paper investigates the effect of oil whirl and oil whip in fluid film radial bearings due to possible metallic contact. The degree of metallic contact and thereby wear and tear between rotating shafts and bearing bushes is assessed by measuring electric currents through the oil film. The current as well as the voltage varied in accordance with the contact ratio between the shaft and bush in the fluid film radial bearing. The gauge signal thus indicates the degree of metallic contact based on the thi…
Experimental investigation of effect of printing direction and surface roughness on the mechanical properties of AlSi10Mg-alloy produced by selective…
2021
The additive manufacturing has initially gained popularity for production of non-loadbearing parts and components or in the fields where the material strength and ductility are less important such as modelling and rapid prototyping. But as the technology develops, availability of metal additive manufacturing naturally dictates the desire to use the produced components in load-bearing parts. This requires not-only a thorough documentation on the mechanical properties but also additional and independent research to learn the expected level of variation of the mechanical properties and what factors affect them. The presented paper investigates strength, ductility, hardness, and microstructure …
Las comunidades de Castilla (1520-1522) como conflicto intraurbano. Sus peculiaridades en el contexto político europeo
2021
En 1520 y 1521 las ciudades castellanas fueron escenario de enconados conflictos políticos que dieron lugar a la introducción de radicales cambios en el régimen de gobierno local. Como consecuencia por primera vez dichas ciudades ofrecieron evidentes paralelismos con las de otros ámbitos de Europa, en particular las alemanas, en las que durante los siglos XIv y Xv y en la primera mitad del XvI proliferaron las revueltas y disputas por el poder político urbano, que con frecuencia conllevaron la introducción de cambios constitucionales de calado. En este artículo el autor se ocupa de la identificación de los principales paralelismos y divergencias, o singularidades, de las ciudades castellana…
Valentina Beatificationis & Canonizationis ... Fr. Nicolai Factor ... : Summarium, De Ortu & educatione Ven. Serui Dei
1667
Sign. : A-Z4, Aa-Oo4
Valentina Beatificationis, & Canonizationis ... Nicolai Factor ... : Animaduersiones Reuerendissimi Fidei Promotoris super dubio ...
1692
Sign. : A-B4, C5