The Compact Irradiator Modulus Designed for DNA Repair and Mutagenesis Studies in ISS Microgravity Environment Using UVA Emitted by Light-Emitting Diodes
AUTOR(ES)
Sampaio, Marcelo, Evangelista, Heitor, d'Amore, Roberto, Asad, Nasser Ribeiro, Asad, Lídia Maria Buarque de Oliveira, Araújo, Adriano Caldeira de, Brasil, Ana Paula Hagge, Veissid, Nelson, Vlassov, Valeri, Pacini, Alessandra, Fontoura, Monique Thérèze Schulz
FONTE
J. Aerosp. Technol. Manag.
DATA DE PUBLICAÇÃO
2014-09
RESUMO
ABSTRACT: This work presents the design and characteristics of a new compact ultraviolet (UV) irradiator used in a biological onboard space flight experiment. The experiment, called DRM, took place in the International Space Station research facility (ISS-13 expedition), during the Centenary Mission (Russian-Brazil) in March-April 2006. The DRM main objective was to correlate the DNA repair mechanism and mutagenesis with microgravity. A compact irradiator apparatus was designed for DRM to allow in situ induced radiation in space. This apparatus, called CIM, uses UV-A Light-emitting diodes (LEDs) with 375 nm wavelength as molecular lesions inducers on four bacterial E. coli strains. The manned space mission restrictions were focused on during the CIM main parts design. The ultraviolet dosimetry is also described in this document as DRM experiment results and the CIM operational data are reported to certify the CIM design and DRM protocol compatibility in space application.
Documentos Relacionados
- Organic light-emitting diodes formed by soft contact lamination
- The use of light-emitting diodes (LED) in commercial layer production
- Abrasion resistance of composites polymerized by light-emitting diodes (LED) and halogen light-curing units
- Influence of intensive light exposure on the complex impedance of polymer light-emitting diodes
- Evaluation of light-emitting diodes as attractant for sandflies (Diptera: Psychodidae: Phlebotominae) in northeastern Brazil