Sökning: "Lead"

Visar resultat 11 - 15 av 5760 avhandlingar innehållade ordet Lead.

1. 11. Equilibrium and Kinetic Batch Studies of Cadmium and Lead sorption using Low Cost Biosorbents

   Författare :Grace Bakyayita Kizito; Ann-Catrine Norrström; Robinah Kulabako; Mai Nalubega; Dan Berggren Kleja; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biosorbents; cadmium; chemisorption; isotherms; kinetics; lead;

   Sammanfattning : Agricultural wastes; Albizia coriaria, Coffea canephora, Cyperus papyrus, Erythrina abyssinica and Musa spp were evaluated for uptake of aqueous Cd2+ and Pb2+ ions in single- and binary-component solutions. Untreated, base-treated and peroxide-treated biomasses were employed in batch studies. LÄS MER

3. 12. On the chemical state and mobility of lead and other trace elements at the biogeosphere/technosphere interface

   Författare :Mattias Bäckström; Gunnar Jacks; Örebro universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; lead; trace elements; traffic; shooting range; peat; sediments; speciation; biokemi; Chemistry; Kemi; Kemi; Chemistry;

   Sammanfattning : Most inorganic contamination has occurred at the interface between the technosphere and the biogeosphere, even though atmospheric emissions have affected the entire globe. Several human activities now pose a substantial threat towards human health and the ecosystems. LÄS MER

4. 13. Decreased furnace wall corrosion in fluidised bed boilers - The influence of fuel lead content and sewage sludge additive

   Författare :Annika Talus; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; demolition-wood; alkali chlorides; Furnace wall corrosion; lead oxide; used-wood; salt melt; lead oxychloride; sewage sludge; chlorine-induced corrosion;

   Sammanfattning : Usage of used-wood fuel in the power industry has resulted in increased corrosion problems for metallic materials in the boilers, most probably due to relatively high amounts of chlorine, alkali metals and heavy metals present in the fuel.In this investigation, laboratory exposures were performed in order to study the influence of lead content in a wood-based fuel on the corrosion of selected materials. LÄS MER

5. 14. Mortality and morbidity in lead smelter workers with concomitant exposure to arsenic

   Författare :Nils-Göran Lundström; Lars Gerhardsson; Peter Westerholm; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Copper-lead smelter; lung cancer; lead exposure; arsenic exposure; Environmental medicine; Miljömedicin;

   Sammanfattning : Arsenic is a well-known lung carcinogen in humans. In 2006, IARC upgraded inorganic lead as a possible human carcinogen (2A). LÄS MER

7. 15. Lean Remanufacturing : Reducing Process Lead Time

   Författare :Jelena Kurilova-Palisaitiene; Erik Sundin; Bozena Poksińska; Mats Björkman; Martin Kurdve; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Circular Economy; Lean Production; Toyota Production System; Value Stream Mapping; Remanufacturing Process Challenges and Improvements; Process Efficiency;

   Sammanfattning : Remanufacturing is a product recovery option in which used products are brought back into useful life. While the remanufacturing industry stretches from heavy machinery to automotive parts, furniture, and IT sectors, it faces challenges. LÄS MER