Sökning: "airborne particles"

Visar resultat 21 - 25 av 83 avhandlingar innehållade orden airborne particles.

1. 21. Platinum Group Elements in Birds of Prey

   Författare :Kristine H. Ek; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; rhodium; bird of prey; platinum; laser ablation; palladium; ICP-MS; airborne particles;

   Sammanfattning : The environmental concentrations of Pd, Pt and Rh (three of the platinum group elements, PGE) have increased since the introduction of exhaust catalysts on automobiles. A limited understanding of the environmental distribution and effects of the platinum group elements has raised concern over their potential biological availability. LÄS MER

3. 22. Dispersion and risk assessment of airborne contaminants in pharmaceutical clean rooms

   Författare :Berit Reinmüller; KTH; []
   Nyckelord :airborne contamination; clean rooms; clean zones; clothing systems; dispersion of contaminants; LR-Method; microbiological risk assessment; risk assessment; source strenth;

   Sammanfattning : In many of today's industries, particularly in the healthcare field, special protection is required against airbornemicrobiological contamination. Clean rooms and clean zones areused to separate the ambient environment from contaminationcontrolled areas. LÄS MER

4. 23. Hygroscopic Properties of Atmospheric Aerosol Particles in Various Environments

   Författare :Jingchuan Zhou; Kärnfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; tandem differential mobility analyser TDMA ; internal and external mixture; closure study; GDF95; AOE-96; Fysik; Physics; Kärnfysik; Nuclear physics; ACE-2; CLAIRE98; differential mobility particle sizer DMPS ; atmospheric aerosol particles; hygroscopic growth; Fysicumarkivet A:2001:Zhou;

   Sammanfattning : Atmospheric aerosol particles affect our living environment in many ways. Their effects are influenced by the interaction between the aerosol particles and the ubiquitous water vapour. The number-size distribution is a primary important parameter for aerosol particles and can be measured using the differential mobility particle sizer (DMPS). LÄS MER

5. 24. Transmission of Infectious Bioaerosols : Sources, transport and prevention strategies for airborne viruses and bacteria

   Författare :Malin Alsved; NanoLund: Centre for Nanoscience; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; bioaerosol; infectious disease; Norovirus; Airborne bacteria; aerosols;

   Sammanfattning : Infectious diseases that can be transmitted via air often spread rapidly, sometimes causing large epidemic and pandemic outbreaks. As an increasing number of people live in crowded urban environments, and with frequent and long-distance traveling across the world, infectious diseases can spread even faster. LÄS MER

7. 25. Physical characterization of engineered aerosol particles

   Författare :Linus Ludvigsson; Fasta tillståndets fysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fysicumarkivet A:2017:Ludvigsson;

   Sammanfattning : This thesis will explore parts of the life of engineered nanoparticles, from generation in research environments andprocess monitoring, to emissions in an industrial setting. The aim is to give insights into how the particles can becharacterized in different settings and how different characterization methods can be applied depending on need ordemand. LÄS MER