Sökning: "UV protection"

Visar resultat 11 - 15 av 34 avhandlingar innehållade orden UV protection.

1. 11. Computational Studies of UV-B Induced Signalling Pathways in Plants

   Författare :Min Wu; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Computational Chemistry;

   Sammanfattning : Abstract This thesis presents theoretical studies of UV-B induced signaling pathways in plants using molecular dynamic methods combined with (TD)-DFT calculations. Ultraviolet B (UV-B) radiation is a component of sunlight covering wavelengths 280-300nm. LÄS MER

3. 12. Hydrophobic Impregnation of Concrete Structures : Effects on Concrete Properties

   Författare :Anders Selander; Johan Silfwerbrand; Jan Trägårdh; Mårten Janz; Andreas Gerdes; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hydrophobic impregnation; silane; siloxane; concrete; surface treatment; water repellent agent; building protection; impregnering; betong; silan; siloxan; ytbehandling; Civil engineering and architecture; Samhällsbyggnadsteknik och arkitektur;

   Sammanfattning : Hydrophobic impregnations often referred to as water repellent agents, today mainly consisting of alkylalkoxysilanes, are often used on concrete to prolong the service life of the structure. This is accomplished by protecting the reinforcement bars from chlorides or by changing the moisture content inside. LÄS MER

4. 13. Towards a broader use of phototesting : in research, clinical practice and skin cancer prevention

   Författare :Magnus Falk; Chris Anderson; Karin Wårdell; Olle Lärkö; Linköpings universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Phototesting; divergent beam; skin cancer prevention; self-reading; minimal erythema dose; sun protection behaviour; Dermatology and venerology; Dermatologi och venerologi;

   Sammanfattning : In western societies, skin cancer incidence has increased dramatically over recent decades, due predominantly to increased sun exposure habits. Ultraviolet (UV) light exposure and individual light sensitivity of the skin constitute two important factors affecting the risk for skin cancer development. LÄS MER

5. 14. Skin cancer prevention : behaviours related to sun exposure and early detection

   Författare :Richard Bränström; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Skin cancer; malignant melanoma; sun exposure; sunburn; sun protection; prevention; early detection;

   Sammanfattning : Skin cancer is an emerging public health problem in Sweden. Even though the most important risk factor for the development of skin cancer - sun exposure - is known, the incidence of skin cancer is still increasing. Every year approximately 30,000 people in Sweden are diagnosed with skin cancer and approximately 400 die of this condition. LÄS MER

7. 15. Thin-film ultraviolet light-emitting diodes realized by electrochemical etching of AlGaN

   Författare :Michael Alexander Bergmann; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; thin-film flip-chip; light-emitting diodes; UVB; AlGaN; thermocompression bonding; substrate removal; ultraviolet light; electrochemical etching; heterogeneous integration; LEDs;

   Sammanfattning : Ultraviolet (UV) light sources have a direct impact on everyone’s life. They are used to sterilize surfaces as well as for water purification. In addition, they are used in green houses to enhance health-promoting substances in plants, for phototherapy to treat skin diseases, for sensing and material curing. LÄS MER