Sökning: "persistent effects"

Visar resultat 6 - 10 av 366 avhandlingar innehållade orden persistent effects.

1. 6. Differentiation of Brain and Reproductive Organs in Birds : Effects of Environmental Contaminants

   Författare :Jeanette Axelsson; Björn Brunström; Björn Munro-Jenssen; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Zoophysiology; Bird; endocrine disruption; estrogen receptor; methoxychlor; UV-filter; sexual behavior; ovotestis; Zoofysiologi; Biology; Biologi;

   Sammanfattning : The first objective of this thesis was to investigate effects of endocrine disruptors on the developing brain and gonads of bird embryos. The substances studied were the insecticide methoxychlor, and nine UV-filters (3-benzylidene camphor (3BC), 4 methyl benzylidene camphor (4MBC), benzophenone (BP) 1,2 and 3, 4 hydroxy benzophenone (4 HB), 4 dihydroxy benzophenone (4DHB), benzyl salicylate (BS), and ethyl-4-aminobenzoate Et-PABA)), commonly used in cosmetic products. LÄS MER

3. 7. Effects of electrical accidents : occupational and health perspectives

   Författare :Lisa Rådman; Magnus Thordstein; Håkan Olausson; Kerstin Norman; Finn Nilson; Örebro universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Electrical accident; Neurosensory symptoms; No-let-go phenomenon; Pain; Voltage; Quantitative sensory testing;

   Sammanfattning : Professionals working in the electrical industry are at risk of accidental injuries caused by electricity. Electrical accidents can cause persistent neurological symptoms, previously mainly described in patients whose injuries were initially extensive. LÄS MER

4. 8. Correlation Effects in One-dimensional Electron Systems

   Författare :Peter Sandström; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; exclusion statistics; resonant tunneling; one dimension; correlated electrons; charge quantization; persistent currents; Aharonov-Bohm effect; Luttinger liquid;

   Sammanfattning : Theoretical studies suggest that an interacting one-dimensional electron system does not behave as a Fermi liquid. Instead, it is predicted to form a Luttinger liquid characterized e.g. by the absence of fermionic quasiparticles and interaction-dependent power-laws for transport quantities. LÄS MER

5. 9. Human exposure to persistent organic pollutants : Illustrated by four case studies in Europe

   Författare :Jana Weiss; Åke Bergman; Janice Huwe; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Human exposure; Persistent organic pollutants POPs ; Environmental chemistry; Miljökemi;

   Sammanfattning : An extensive use of chemicals in countless consumer products has resulted in human exposure to several persistent organic pollutants (POPs). Sufficient knowledge about their chemical composition properties and environmental faith is required, to be able to proper risk assess and regulate the substances. LÄS MER

7. 10. Effects of Varying Combustion Conditions on PCDD/F Formation

   Författare :Johanna Aurell; Stellan Marklund; Sukh Sidhu; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; dioxin; formation; PCDD; PCDF; MSW incineration; transient combustion; sulfur; memory effects; quench time; chlorine; combustion; polychlorinated dibenzothiophenes; NO; water; Environmental chemistry; Miljökemi;

   Sammanfattning : Polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) are by-products emitted from combustion sources such as municipal solid waste (MSW) incineration plants. These organic compounds are recognized as toxic, bioaccumulative and persistent in the environment. LÄS MER