Essays about: "barium"

Showing result 1 - 5 of 16 essays containing the word barium.

1. 1. Barium in the O horizon of soils near Sundsvall, northern Sweden : From local minerals or from anthropogenic emissions?

   University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

   Author : Mattias Åsberg Gencturk; [2023]
   Keywords : Barium; soil; organic horizon;

   Abstract : Concentrations of potentially toxic metals in surface soils are important to investigate before building new residential areas. Prior to development of a residential area in Sundsvall, northern Sweden, it was observed that barium (Ba) concentrations in the soil at the site exceeded the guideline value of 200 mg kg-1 outlined by the Swedish Environmental Protection Agency. READ MORE

3. 2. Origin of blue straggler stars in the Milky Way halo

   University essay from Lunds universitet/Astrofysik; Lunds universitet/Fysiska institutionen

   Author : Adam Brcek; [2023]
   Keywords : Blue Straggler; Galactic Halo; Spectroscopic Surveys; Binary Star Evolution; Mass Transfer; Physics and Astronomy;

   Abstract : Blue straggler stars (BSSs) are exotic stellar objects that appear to be younger than the age of the population they come from suggests. They are observed as the extension of the main sequence stars, beyond the turn-off point. READ MORE

4. 3. Glyoxylic-Modified Lignin for Synthesis of Smart Elastomer and Composite Materials

   University essay from KTH/Tillämpad fysik

   Author : Xinyi Wei; [2023]
   Keywords : Lignin; lignin-based elastomer; nanocomposites; Lignin; ligninbaserad elastomer; nanokompositer;

   Abstract : Sustainable development has become a global goal and the utilization of bioresources is a key way to achieve this crucial goal. Glyoxylic acid-functionalized lignin (GA-lignin) is one of the novel lignin derivatives extracted from beech wood (hardwood) and has great potential to be an industrially important bioresource. READ MORE

5. 4. Numerical Simulations of Metal Recovery for Battery Recycling

   University essay from KTH/Processteknologi

   Author : Morgan Ölander; [2023]
   Keywords : Batteriåtervinning; Metall återvinning; Kristallisation; Computational Fluid Dynamics CFD ; Populationsbalansmodellering; Battery recycling; Metal recovery; Crystallisation; Computational Fluid Dynamics CFD ; Population balance modelling;

   Abstract : Den pågående elektrifieringen av transport och samhälle kräver utveckling av nya metoder för återvinning av batterier. Hydrometallurgi som fokuserar på selektiv kristallisation av metaller är ett intressant alternativ för dessa ändamål. Dessa system kan studeras genom modellering och simulering. READ MORE

6. 5. Laptops and smartphones - a gold mine? : A material flow analysis of small electronics in a Swedish organisation with focus on metal resources

   University essay from Linköpings universitet/Tema Miljöförändring

   Author : Daniella Karlsson; [2021]
   Keywords : Metals; bottom-up MFA; Recycling; Reuse; Urban mining; Stocks;

   Abstract : The aim of this study is to contribute to today´s knowledge about stocks of electronic products on the organisational level. This is done by using a bottom-up MFA on laptops and smartphones in a chosen organisation, the data collected for this study is done by both semi-structured interviews and literature searches. READ MORE