Sökning: "Hazardous materials"

Visar resultat 1 - 5 av 58 avhandlingar innehållade orden Hazardous materials.

  1. 1. Continuous Fibre Reinforced Oxide/Oxide Composites

    Detta är en avhandling från Chalmers University of Technology

    Författare :Magnus Holmquist; Chalmers tekniska högskola.; Chalmers University of Technology.; [2003]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk materialvetenskap; Materials science; ceramic matrix composite; continuous fibre reinforced ceramic composite; oxide fibre; single crystal oxide fibre; sapphire; polycrystalline oxide fibre; alumina; mullite; interphase; interface; zirconia; tape casting; hot pressing; hot isostatic pressing; VibroIntrusion; mechanical properties;

    Sammanfattning : The appealing properties of ceramics include retention of strength and hardness at high temperatures, chemical inertness and low density. However, monolithic ceramics fail in a brittle, unpredictable manner making them unsuitable for many applications where reliability is a key requirement. LÄS MER

  2. 2. Grouting of Hard Rock with Gelling Liquids, Field and Laboratory Studies of Silica sol

    Detta är en avhandling från Chalmers University of Technology

    Författare :Johan Funehag; Chalmers tekniska högskola.; Chalmers University of Technology.; [2005]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Geovetenskap; Earth sciences; Samhällsbyggnadsteknik och arkitektur; Civil engineering and architecture; Teknisk materialvetenskap; Materials science; Grouting; gelling liquids; silica sol; colloidal silica; penetration length; hydraulic test; transmissivity; field study; sand column; aperture; propagation; rheology;

    Sammanfattning : Recent grouting projects in Sweden have concentrated on the grout itself. The only grout normally used in Sweden is a cement-based one. During the past 10 years, the acceptable flow of water into tunnels has been significantly reduced. The current requirements mean that an average fracture aperture of around 0. LÄS MER

  3. 3. Towards Abatement of Selected Emissions from Metals Manufacturing

    Detta är en avhandling från Stockholm : KTH

    Författare :Diana Orrling; KTH.; [2010]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mercury; zinc; iron; copper; sulfur dioxide; adsorption; pollution; spectroscopy; thermal desorption; polycrystalline; surfaces; TECHNOLOGY Materials science; TEKNIKVETENSKAP Teknisk materialvetenskap;

    Sammanfattning : Although the metallurgical industry has made great strides in the reduction of unwanted emissions to the atmosphere as a result of production processes, significant challenges still exist. From a global perspective, even large reductions in emissions per produced ton become immaterial when considering that the total world production of metals continues to increase. LÄS MER

  4. 4. Gamma irradiation in multi-cycle ABS recycling- effects on ABS properties and the recovery of antimony

    Detta är en avhandling från Chalmers University of Technology

    Författare :Sandra Tostar; Chalmers tekniska högskola.; Chalmers University of Technology.; [2013]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ABS; WEEE; gamma irradiation; recycling; antimony; plastics;

    Sammanfattning : Electronic waste, also called waste electrical and electronic equipment (WEEE), is the fastest growing waste stream in Europe today. The fast exchange pace of mobile phones, televisions and computers creates an important need to develop recycling areas to take care of, reuse and recycle these materials. LÄS MER

  5. 5. Environmental and health hazards of chemicals in plastic polymers and products

    Detta är en avhandling från Chalmers University of Technology

    Författare :Delilah Lithner; Göteborgs universitet.; Gothenburg University.; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; plastics; plastic products; plastic polymers; consumer products; environmental hazards; environment; health hazards; human health; hazard ranking; hazard assessment; chemical ranking; hazard identification; hazard classifications; hazardous chemicals; hazardous substances; toxic substances; monomers; polymers; toxicity; acute toxicity; toxicity tests; Daphnia magna; Toxicity Identification Evaluation; TIE; leaching; leachates; product leachates; leaching tests; plastic materials; plastic;

    Sammanfattning : Plastics are extremely diverse in terms of chemical composition, properties and possible applications, and are widely distributed in the society and the environment. In the last 15 years the global annual production has doubled, reaching 245 million tons in 2008. LÄS MER