Sökning: "dry and wet deposition"

Visar resultat 6 - 10 av 21 avhandlingar innehållade orden dry and wet deposition.

1. 6. Label free analysis and spatial distribution of molecular lipids in brain tissue and cells using mass spectrometry imaging

   Författare :Amir Saeid Mohammadi; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Mass Spectrometry Imaging; Secondary Ion Mass Spectrometry Imaging; Matrix Assisted Laser desorption Ionization; Lipids; Brain tissue;

   Sammanfattning : Lipids are important inherent components in brain and cell membranes, which play significant biological roles in cell function. Identification and localization of specific biomolecules such as peptides and lipids within cellular membranes is currently a major challenge in metabolomics and biological studies. LÄS MER

3. 7. Porous Materials from Cellulose Nanofibrils

   Författare :Nicholas Tchang Cervin; Lars Wågberg; Björn Lindman; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Poröst material; cellulosa nanofibriller; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Sammanfattning : In the first part of this work a novel type of low-density, sponge-like material for the separation of mixtures of oil and water has been prepared by vapour deposition of hydrophobic tri-chloro-silanes on ultra-porous cellulose nanofibril (CNF) aerogels. To achieve this, a highly porous (>99%) robust CNF aerogel with high structural flexibility is first formed by freeze-drying an aqueous suspension of the CNFs. LÄS MER

4. 8. Green liquor dregs-amended till to cover sulfidic mine waste

   Författare :Susanne Nigéus; Christian Maurice; Thomas Pabst; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Applied Geochemistry; Tillämpad geokemi;

   Sammanfattning : The mining industry produces massive amounts of waste that without treatment and in contact with oxygen can result in acid rock drainage (ARD) and increased leaching of metals. In Sweden, the common way to manage the mine waste after closure is to apply a dry coverage on top of the waste deposition. LÄS MER

5. 9. Aerosol Exchange between Forests and the Atmosphere : Fluxes over a Tropical and a Boreal Forest

   Författare :Lars Ahlm; Douglas Nilsson; David Fowler; Stockholms universitet; []
   Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; Applied Environmental Science; tillämpad miljövetenskap;

   Sammanfattning : The main goal of this thesis was to investigate primary biogenic aerosol emission from the Amazon rain forest through measurements of vertical turbulent aerosol number fluxes. In addition, the particle dry deposition sink has been analysed and quantified, and is also compared with the dry deposition sink at a boreal forest site. LÄS MER

7. 10. Application of Passive DOAS using Scattered Sunlight for quantification of gas emissions from anthropogenic and volcanic sources

   Författare :Claudia Rivera; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; nitrogen dioxide; DOAS; gas emission; sulphur dioxide; volcanic; formaldehyde.; scattered sunlight; anthropogenic;

   Sammanfattning : Monitoring of gas emissions from natural and anthropogenic sources is important due to the negative effects of these emissions on human health, atmospheric quality and ecosystems. Concern over air pollution has increased the need to develop measurement techniques suitable for gas flux determination. LÄS MER