4 documents found, page 1 of 1
Ozone toxicity to Sitophilus zeamais (Coleoptera: Curculionidae) populations un...
Sousa, A. H.; Faroni, L. R. D'A.; Pimentel, M. A. G.; Silva, G. N.; Guedes, R. N. C.Two populations of Sitophilus zeamais (Coleoptera: Curculionidae) were subjected to selection pressure with ozone (O3), and the possibility of acquiring resistance to O3 was investigated. The pattern of locomotion and the rate of respiration were evaluated following each selection cycle. Two source populations were used in the study: one was a mixture composed of 30 populations (MP), and the other was composed ...
Bioactivity of Jatropha curcas L. to insect pests of stored products
Silva, G. N.; Faroni, L. R. A.; Sousa, A. H.; Freitas, R. S.The objective of this research was to assess insecticidal activity of seeds and derivatives of Jatropha curcas to insect pests of stored grains. Lethal exposure times were estimated for 50 and 95% (LT50 and LT95) of the adults of Sitophilus zeamais and Rhyzorpertha dominica to seeds of four genotypes of J. curcas: Gonçalo, Paraguaçu, Filomena and Bento. Toxicity of powders and aqueous extracts from seeds and pe...
Hermetic storage for control of common bean weevil, Acanthoscelides obtectus (Say)
Freitas, R. S.; Faroni, L. R. A.; Sousa, A. H.This study evaluated hermetic storage as a method of controlling Acanthoscelides obtectus (Coleoptera: Chrysomelidae: Bruchinae) in stored beans. Recently harvested “vermelhinho” cultivar of the common red bean was used, which had already been infested by A. obtectus in the field. Beans with a moisture content of 15.0% wet basis were stored in silo bags (3 kg), plastic bottles (1.5 L), or non-hermetic glass con...
Characterization and development of anthropomorphic phantoms liver for use in n...
Ferreira, Fernanda Carla Lima; Souza, Divanizia do Nascimento; Rodrigues, Tânia Maria de Andrade; Cunha, Clêdison de Jesus; Dullius, Marcos AlexandreThe objective this study was to characterize and develop anthropomorphic liver phantoms in tomography hepatic procedures for quality control and improvement professionals in nuclear medicine. For the conformation of the anthropomorphic phantom was used in plaster and acrylic. We constructed three phantoms representing processes with liver cirrhosis. The phantoms were filled with 99mTc diluted with water to obta...