Sökning: "iron tools"

Visar resultat 11 - 15 av 75 avhandlingar innehållade orden iron tools.

1. 11. Development of a geometallurgical framework for iron ores - A mineralogical approach to particle-based modeling

   Författare :Mehdi Parian; Pertti Lamberg; Jan Rosenkranz; Julie Hunt; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Geometallurgy; process simulation; breakage characterization; ore texture; iron ore; modal mineralogy;

   Sammanfattning : The demands for efficient utilization of ore bodies and proper risk management in the mining industry have resulted in a new cross-disciplinary subject called geometallurgy. Geometallurgy connects geological, mineral processing and subsequent downstream processing information together to provide a comprehensive model to be used in production planning and management. LÄS MER

3. 12. Dendritic morphology and ultimate tensile strength of pearlitic lamellar graphite iron

   Författare :Vasilios Fourlakidis; Attila Diószegi; Carlos A. Silva Ribeiro; Jönköping University; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Lamellar graphite iron; Primary austenite dendrite; Ultimate tensile strength; Microstructure model;

   Sammanfattning : The continued development, of cylinder blocks and cylinder heads for heavy truck engines that are made of lamellar graphite iron (LGI) is focused on achieving high ultimate tensile strength (UTS) whilst conforming to environmental regulations. The purpose of this work is to further improve the tensile strength as well as the predictive engineering tools for optimization of LGI aimed to enhance the efforts for producing lighter and sustainable components without sacrificing performance. LÄS MER

4. 13. Iron and aluminium speciation in Swedish freshwaters : Implications for geochemical modelling

   Författare :Carin Sjöstedt; Jon Petter Gustafsson; Peggy O'Day; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Geochemical equilibrium modelling; pH; adsorption to ferrihydrite; metal-NOM complexation; liming; EXAFS spectroscopy;

   Sammanfattning : Speciation governs transport and toxicity of trace metals and is important to monitor in natural waters. Geochemical models that predict speciation are valuable tools for monitoring. They can be used for risk assessments and future scenarios such as termination of liming. LÄS MER

5. 14. The Common Thread, Textile Production during the Late Iron Age and Viking Age

   Författare :Eva Andersson; Arkeologi; []
   Nyckelord :HUMANIORA; HUMANITIES; Haithabu; Birka; Scania; Viking Age; Late Iron Age; household production; textile valuables; sail cloth; bone needle; loom weight; textile production; spindle whorl; Archaeology; Arkeologi;

   Sammanfattning : The initial aim of the present PhD thesis was to develop the method of classification for textile tools to facilitate the study of textile production in an archaeological context. The thesis consists of five separate projects and a concluding summary. The study covers the late Iron Age, mainly the Viking Period. LÄS MER

7. 15. Stability Phenomena in Novel Electrode Materials for Lithium-ion Batteries

   Författare :Mårten Stjerndahl; Torbjörn Gustafsson; John O. Thomas; Robert M. Kostecki; Uppsala universitet; []
   Nyckelord :Inorganic chemistry; Li-ion battery; electrode material; intermetallic; AlSb; lithium iron phosphate; lithium iron silicate; photoelectron spectroscopy; Oorganisk kemi;

   Sammanfattning : Li-ion batteries are not only a technology for the future, they are indeed already the technology of choice for today’s mobile phones, laptops and cordless power tools. Their ability to provide high energy densities inexpensively and in a way which conforms to modern environmental standards is constantly opening up new markets for these batteries. LÄS MER