Search for dissertations about: "Airborne dust"

Showing result 1 - 5 of 29 swedish dissertations containing the words Airborne dust.

2. 1. Novel Technique for Analysing Volatile Compounds in Indoor Dust : Application of Gas Chromatography – UV Spectrometry to the Study of Building-Related Illness

   Author : Anders Nilsson; Christer Tagesson; Verner Lagesson; Göran Strid; Linköpings universitet; []
   Keywords : acrylates adverse effects; air pollution; ultraviolet; indoor analysis; chromatography; gas; environmental exposure adverse effects; sick building syndrome etiology; dust; volatilization; Spectrophotometry; MEDICINE; MEDICIN;

   Abstract : It is now generally acknowledged that particulate air pollution can cause respiratory symptoms and that indoor dust particles may be associated with mucous membrane irritation and odour annoyance. One reason for this may be that dust particles adsorb large quantities of gases and other volatile compounds. READ MORE

4. 2. Development of methods for determining aflatoxins in biological material

   Author : Anders Kussak; Rainer Stephany; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Aflatoxins; Mycotoxins; Carcinogen; Airborne dust; Urine; Feed factories; Immunoaffinity extraction; Solid-phase extraction; Post-column derivatization; Electrospray; Mass spectrometry;

   Abstract : In this thesis, it is shown how aflatoxins can be determined in biological material. The thesis is a summary of five papers.Aflatoxins are carcinogenic mycotoxins produced by Aspergillus moulds. Methods were developed for the determination of aflatoxins in samples of airborne dust and human urine collected at feed factories. READ MORE

5. 3. Microorganisms in indoor environments. A search for health-related measurements

   Author : Loay Wady; Avdelningen för medicinsk mikrobiologi; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; mykologi; virologi; bakteriologi; Mikrobiologi; mycology; bacteriology; virology; Microbiology; schools; microbial markers; MVOCs; building materials; dust; GC MSMS; SPME;

   Abstract : Microorganisms are ubiquitous in indoor air and epidemiological data suggest that inhalation of microbes and/or their products adhered on air–borne dust particles can impair well–being and health. In the present thesis microbial volatile organic compounds (MVOCs) and cellular markers were studied by gas chromatography–mass spectrometry (GC/MS). READ MORE

6. 4. Mycotoxins in indoor environments. Determination using mass spectrometry

   Author : Erica Bloom; Avdelningen för medicinsk mikrobiologi; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Gas chromatography; Mass spectrometry; Mycotoxin; Indoor Air; Ergosterol.; Mold; High pressure liquid chromatography; Dust; Building materials;

   Abstract : Dampness in indoor environments may cause various health problems. The specific causative agent(s) are unknown but may originate from degradation processes in damp materials, microbial growth, or a combination of these phenomena. The health impact of dampness in buildings is a politically, legally, and economically important question. READ MORE

7. 5. A study of micro-particles in the dust and melt at different stages of iron and steelmaking

   Author : Muhammad Nabeel; Andrey Karasev; Lauri Holappa; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Particle size distribution; ironmaking; iron ore pellets; dust generation; mechanical wear; friction; reduction; REM clusters; Electrolytic extraction; cluster size distribution; growth mechanism; collisions; statistical analysis.; Teknisk materialvetenskap; Materials Science and Engineering; Metallurgical process science; Metallurgisk processvetenskap;

   Abstract : The dust particles generated due to mechanical wear of iron ore pellets and clusters formed in molten stainless steel alloyed with rare earth metals (REM) are considered in this study. Firstly, the influence of the characteristics of iron ore pellets, applied load on a pellet bed and partial reduction of the pellets on the size distribution of the generated dust was investigated. READ MORE