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Biological control, with the use of entomopathogenic fungi, has been one of the promising alternatives in the control of fruit flies. This study aimed to evaluate the pathogenicity of entomopathogenic fungi of the species Metarhizium anisopliae (Metsch.) Sorok. and Beauveria bassiana (Bals.) in 2nd and 3rd instar larvae, pupae and adults of the fruit fly Ceratitis capitata Wiedemann (Diptera: Tephritidae). The experiment was conducted at the Invertebrate Zoology and Phytopathology Laboratories at the Center for Agricultural Sciences, Federal University of Paraíba, in the municipality of Areia - PB. In this study, two isolates, Metarhizium anisopliae IDCB425 and Beauveria bassiana IDCB66, were used in different concentrations. It was found that the potential for infection of both isolates is greater in larvae of 2nd and 3rd instars and adults of C. capitata, than in pupae. The mortality rate of C. capitata increases as the suspensions become more concentrated. The IDCB66 isolate from B. bassiana is more efficient to C. capitata than the IDCB425 isolate from M. anisopliae. El control biológico, con el uso de hongos entomopatógenos, ha sido una de las alternativas prometedoras en el control de la mosca de la fruta. Este estudio tuvo como objetivo evaluar la patogenicidad de hongos entomopatógenos de la especie Metarhizium anisopliae (Metsch.) Sorok. y Beauveria bassiana (Bals.) en larvas, pupas y adultos de segundo y tercer estadio de la mosca de la fruta Ceratitis capitata Wiedemann (Diptera: Tephritidae). El experimento se realizó en los Laboratorios de Zoología y Fitopatología de Invertebrados del Centro de Ciencias Agrícolas de la Universidad Federal de Paraíba, en el municipio de Areia - PB. En este estudio, se utilizaron dos aislados, Metarhizium anisopliae IDCB425 y Beauveria bassiana IDCB66, en diferentes concentraciones. Se encontró que el potencial de infección de ambos aislamientos es mayor en larvas de segundo y tercer estadios y en adultos de C. capitata que en pupas. La tasa de mortalidad de C. capitata aumenta a medida que las suspensiones se concentran más. El aislado IDCB66 de B. bassiana es más eficaz para C. capitata que el aislado IDCB425 de M. anisopliae. O controle biológico, com a utilização de fungos entomopatogênicos, tem sido umas das promissoras alternativas no controle de moscas-das-frutas. Este estudo teve como objetivo avaliar a patogenicidade dos fungos entomopatogênicos das espécies Metarhizium anisopliae (Metsch.) Sorok. e Beauveria bassiana (Bals.) em larvas de 2º e 3º instar, pupas e adultos da mosca-das-frutas Ceratitis capitata Wiedemann (Diptera: Tephritidae). O experimento foi conduzido nos Laboratórios de Zoologia de Invertebrados e de Fitopatologia do Centro de Ciências Agrárias, Universidade Federal da Paraíba, no município de Areia - PB. Neste estudo foram utilizados dois isolados, Metarhizium anisopliae IDCB425 e Beauveria bassiana IDCB66, em diferentes concentrações. Verificou-se que o potencial de infecção de ambos isolados é maior em larvas de 2º e 3º ínstares e de adultos de C. capitata, do que em pupas. A taxa de mortalidade de C. capitata aumenta à medida que as suspensões se tornam mais concentradas. O isolado de IDCB66 de B. bassiana é mais eficiente à C. capitata, que o isolado IDCB425 de M. anisopliae.

The search for materials for hydrogen storage that are able to adsorb and desorb hydrogen molecules has received attention. Nanofibers have been studied because it has some interesting characteristics like high surface to volume ratio and the ease of producing by means of a low-cost setup. Polyacrylonitrile (PAN) has allowed the possibility of obtaining carbon nanofibers from the electrospinning process followed by a thermal treatment; moreover Pd has the capability of store hydrogen and can form a complex with dimethylformamide (DMF) so that, during the preparation of the solution of PAN and PdCl2, both present high solubility in the solvent. Thus, the results demonstrated that as Pd can form complex with DMF the preparation method of the PAN+PdCl2 solutions influences the interaction between Pd and PAN. The decrease in dispersion viscosity and an unexpected increase in the diameter of the fibers confirm the hypothesis. The FTIRS and XPS analysis confirm that the Pd complexes with DMF by means of bonds to N., i-ETC : ISEL Academic Journal of Electronics Telecommunications and Computers, Vol 6, No 1 (2020): Volume 6