Sökning: "metals and metalloid"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden metals and metalloid.

1. 1. Mechanisms behind pH changes by plant roots and shoots caused by elevated concentration of toxic elements

   Författare :Muhammad Tariq Javed; Maria Greger; Sylvia Lindberg; Marinus L. Otte; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Elodea canadensis; Eriophorum angustifolium; fluorescence microscopy; mechanisms; metals and metalloid; pH changes; protoplasts; phytofiltration; phytostabilization; root exudates; Plant Physiology; växtfysiologi;

   Sammanfattning : Toxic elements are present in polluted water from mines, industrial outlets, storm water etc. Wetland plants take up toxic elements and increase the pH of the medium. In this thesis was investigated how the shoots of submerged plants and roots of emergent plants affected the pH of the surrounding water in the presence of free toxic ions. LÄS MER

3. 2. Adaptation and Protein Quality Control Under Metalloid Stress

   Författare :Sebastian Ibstedt; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; protein quality control; arsenite; tellurite; natural selection; Saccharomyces cerevisiae;

   Sammanfattning : Toxic metals and metalloids are emerging as major environmental pollutants, having ecological consequences as well as being linked to a broad range of degenerative conditions in animals, plants and humans. While the toxicity of several metalloids is well established, the underlying molecular mechanisms are often not clear. LÄS MER

4. 3. Water treatment using cryogel-based adsorbents - Targeting environmental pollutants at low concentrations

   Författare :Linda Önnby; Bioteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Adsorption; cryogels; nanoparticles; arsenic; cadmium; water treatment; composites;

   Sammanfattning : The lack of safe, clean water is strongly linked to poverty, underdevelopment and poor health. Water is needed not only to sustain life, but to produce food and in industrial processes. Anthropogenic pollution and natural events can jeopardize access to safe water. LÄS MER

5. 4. A Computational Venture into the Realm of Laminated Borides and their 2D Derivatives

   Författare :Pernilla Helmer; Johanna Rosén; Martin Dahlqvist; Jonas Björk; Biplab Sanyal; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Daily life in modern society is highly dependent on many different materials and techniques for manipulating them, and the technological forefront is constantly pushed further by new discoveries. Hence, materials science is a very important field of research. LÄS MER

7. 5. Suitability of industrial residues for preventing acid rock drainage generation from waste rock

   Författare :Elsa Nyström; Lena Alakangas; Hanna Kaasalainen; Christian Maurice; Päivi M. Kauppila; Luleå tekniska universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Applied Geochemistry; Tillämpad geokemi;

   Sammanfattning : One of the main and most challenging environmental problems related to mining is the generation of acid rock drainage (ARD), a leachate characterized by low pH and elevated concentrations of sulfate, metals, and metalloids formed when sulfide-bearing minerals are subjected to oxygen and water. During the operation of a mine, waste rock is often deposited in heaps and usually left under ambient conditions, enabling sulfides to oxidize. LÄS MER