Sökning: "Photostability"

Visar resultat 1 - 5 av 29 avhandlingar innehållade ordet Photostability.

1. 1. Studies of Sunscreens: Percutaneous Absorption of Benzophenone-3 and Photostability

   Författare :Helena Gonzalez; Göteborgs universitet; []
   Nyckelord :benzophenone-3; dihydroxy benzophenone; sunscreens; UV radiation; reverse-phase HPLC; photostability;

   Sammanfattning : Studies of Sunscreens: Percutaneous Absorption of Benzophenone-3 and Photostability Helena Gonzalez Department of Dermatology and Venereology Institute of Clinical Sciences The Sahlgrenska Academy at Göteborg University Göteborg, Sweden Abstract Aim: To learn more about percutaneous absorption of the photoactive compound benzophenone-3 (BZ-3) and to study the excretion pattern of BZ-3 and its metabolite dihydroxy benzophenone (DHB). We also got the opportunity to develop a reverse-phase HPLC method to analyze BZ-3 and DHB. LÄS MER

3. 2. Construction of an apparatus for production of size-selected clusters, characterisation of magnetic and optical properties of cluster films and studies of the photostability of sunscreens

   Författare :Nils Tarras-Wahlberg; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; clusters; deposited; size-selected; optical properties; Ti; oxidation; magnetism; Mössbauer; Fe; sunscreens; photostability;

   Sammanfattning : .... LÄS MER

4. 3. Photophysics of Perovskite Nano- and Microcrystals

   Författare :Junsheng Chen; NanoLund: Centre for Nanoscience; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ultrafast spectroscopy; Two-photon absorption; Perovskite; Nanocrystals; Photostability; Lead free perovskite;

   Sammanfattning : The demand and consumption of energy is increasing dramatically all around the world. Broad adoption of fossil fuels has triggered an enormous threat to the environment. To ensure sustainability of our species and habitat, new solutions to fulfill the energy demand have to be found. LÄS MER

5. 4. Materials aspects in spin-coated films for polymer photovoltaics

   Författare :Ana Sofia Anselmo; Ellen Moons; Krister Svensson; Jan van Stam; Paul Dastoor; Karlstads universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; materials science; photovoltaics; conjugated polymer; polymer solar cell; bulk heterojunction; coating; morphology; fullerene; photostability; degradation; X-ray absorption spectroscopy; synchroton-based techniques; Materialvetenskap; Materialvetenskap;

   Sammanfattning : Polymer-based photovoltaics have the potential to contribute to boosting photovoltaic energy conversion overall. Besides allowing large-area inexpensive processing, polymeric materials have the added benefit of opening new market applications for photovoltaics due to their low-weight and interesting mechanical properties. LÄS MER

7. 5. Development of bixin formulations. Extraction, microencapsulation, dispersibility and photostability

   Författare :Cecilia Curi; Avdelningen för livsmedel och läkemedel; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bixin; annatto; natural colorants; light stability in solid multiphase systems; shelf life extension; auqeous physical stability; encapsualtion efficiancy; spray drying; natural colored candies;

   Sammanfattning : The aril that covers the seeds of the plant species Bixa orellana is composed of the natural colorants bixin and norbixin, phenolic components and native carbohydrates composed of hemicellulose, starch, and a small fraction of proteins. Bixin is a hydrophobic carotenoid that is water insoluble and is mostly used for coloring oil-based formulations. LÄS MER