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1.
Poor Sleep quality and health-related quality of life impact in adolescents with and without chronic immunosuppressive conditions during COVID-19 quarantine
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Helito, Alberto C.
; Lindoso, Livia
; Sieczkowska, Sofia M.
; Astley, Camilla
; Queiroz, Ligia B.
; Rose, Natalia
; Santos, Claudia Renata P.
; Bolzan, Thalis
; Peralta, Rita María I.A.
; Franco, Ruth R.
; Cominato, Louise
; Pereira, Rosa Maria R.
; Tannuri, Uenis
; Campos, Lucia Maria A.
; Lourenço, Benito
; Toma, Ricardo K.
; Medeiros, Karina
; Watanabe, Andréia
; Grangeiro, Patricia Moreno
; Farhat, Sylvia C.
; Casella, Caio B.
; Polanczyk, Guilherme V.
; Gualano, Bruno
; Silva, Clovis A.
; Sallum, Adriana M. E.
; Iraha, Amanda Y.
; Ihara, Bianca P.
; Mazzolani, Bruna C.
; Martinez, Claudia A.
; Strabelli, Claudia A. A.
; Fonseca, Claudia B.
; Lima, Dandara C. C.
; Setoue, Debora N. D.
; Roz, Deborah F. P.
; Smaira, Fabiana I.
; Roschel, Hamilton
; Miyatani, Helena T.
; Marques, Isabela G.
; Oba, Jane
; Ferreira, Juliana C. O.
; Simon, Juliana R.
; Kozu, Katia
; Saccani, Ligia P.
; Martiniano, Lorena V. M.
; Miranda, Luana C. A.
; Silva, Luiz E. V.
; Laurentino, Moisés F.
; Aikawa, Nadia E.
; Sakita, Neusa K.
; Tanigava, Nicolas Y.
; Pereira, Paulo R. A.
; Palmeira, Patrícia
; Angelo, Simone S.
; Lavorato, Sofia S. M.
; Bernardes, Tamires M.
; Franco, Tathiane C.
; Viana, Vivianne S. L.
; Barros, Vera P. M. F. R.
; Zheng, Yingying
.
OBJECTIVE: To assess the possible factors that influence sleep quality in adolescents with and without chronic immunosuppressive conditions quarantined during the coronavirus disease 2019 (COVID-19) pandemic. METHODS: This cross-sectional study included 305 adolescents with chronic immunocompromised conditions and 82 healthy adolescents. Online surveys were completed, which included questions on socio-demographic data and self-rated healthcare routine during COVID-19 quarantine and the following validated questionnaires: the Pittsburgh Sleep Quality Index (PSQI), Pediatric Quality of Life Inventory 4.0 (PedsQL4.0), and Pediatric Outcome Data Collection Instrument (PODCI). RESULTS: The median current age [14 (10-18) vs. 15 (10-18) years, p=0.847] and frequency of female sex (62% vs. 58%, p=0.571) were similar in adolescents with chronic conditions compared with healthy adolescents. The frequency of poor sleep quality was similar in both groups (38% vs. 48%, p=0.118). Logistic regression analysis, including both healthy adolescents and adolescents with chronic conditions (n=387), demonstrated that self-reported increase in screen time (odds ratio [OR] 3.0; 95% confidence interval [CI] 1.3-6.8; p=0.008) and intrafamilial violence report (OR 2.1; 95% CI 1.2-3.5; p=0.008) were independently associated with poor sleep quality in these adolescents. However, the PODCI global function score was associated with a lower OR for poor sleep quality (OR 0.97; 95% CI 0.94-0.99; p=0.001). Further logistic regression, including only adolescents with chronic conditions (n=305), demonstrated that self-reported increase in screen time (OR 3.1; 95% CI 1.4-6.8; p=0.006) and intrafamilial violence report (OR 2.0; 95% CI 1.2-3.4; p=0.011) remained independently associated with poor quality of sleep, whereas a lower PODCI global function score was associated with a lower OR for sleep quality (OR 0.96; 95% CI 0.94-0.98; p<0.001). CONCLUSION: Self-reported increases in screen time and intrafamilial violence report impacted sleep quality in both healthy adolescents and those with chronic conditions. Decreased health-related quality of life was observed in adolescents with poor sleep quality.
2.
Estudo da ativação ácida e tratamento térmico de bauxita extraída de jazidas em Minas Gerais, Brasil
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Prado, C. M. R.
; Alves, M. I. R.
; Leles, M. I. G.
; Medeiros, R. I.
; Otto, C. R. N.
; Damasceno, F. C.
; Brait, C. H. H.
; Franco, P. I. B. M.
; Antoniosi Filho, N. R.
.
O Brasil é um dos maiores produtores mundiais de bauxita, contudo pouco se conhece sobre as características químicas e mineralógicas desse mineral. Assim sendo, este trabalho tem por objetivo dar prosseguimento à caracterização de bauxita, estudando as transformações ocorridas nesse material quando submetido à ativação ácida e ao tratamento térmico. Os resultados demonstraram que a bauxita "in natura" é composta basicamente pelo mineral gibbsita, seguido de semicristalitos de goethita e óxido de silício, apresentando característica de sólido com ausência de mesoporosidade, com baixos valores de área superficial total, diâmetro e volume de poros. As modificações químicas e físicas que ocorrem no material durante a calcinação são governadas, principalmente, pela desidratação das fases de hidróxidos de alumínio presentes, levando à formação das fases boehmita, hematita e alfa alumina, além de resultar em aumento na porosidade e na área superficial da bauxita. As bauxitas ativadas em meio ácido mostraram que as transformações sofridas no sólido estão diretamente relacionadas com a concentração da solução ácida utilizada e resultam em aumento da área superficial total, diâmetro e volume de poros.
Brazil is one of the world's leading producers of bauxite. Little is known, however, about the chemical and mineralogical characteristics of Brazilian bauxite. The objective of this paper is to characterize bauxite in both natural and thermally and chemically activated forms. The transformations occurring during these two processes are described. The results show that the raw bauxite is basically composed of the mineral gibbsite, followed by semicrystalites of goethite and silicon oxide. Its characteristics are those of a solid without mesoporosity, with small total surface area and pore diameter and volume. The chemical and physical modifications that occur in the material during the calcination process are governed mainly by the dehydration of the aluminum hydroxides phases, leading to the formation of the boehmite, hematite and alpha alumina phases. Calcination results in an increase in the porosity and surface area of the bauxite as well as the appearance of the characteristics of mesoporous and thermally stable materials. The activation of bauxites in an acid medium showed that the transformations in the solid are directly related to the concentration of the acid solution used and result in an increase in the total surface area and pore diameter and volume.
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3.
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Abad, P.
; Abreu, P.
; Acencio, N.
; Acevedo, S.
; Acevedo, V.
; Agohn, R.
; Albornoz, L.
; Alvarez, P.
; Arana, C.
; Arango, A.
; Arango, J. J.
; Arbeláez, A.
; Arbeláez, L. E.
; Arboleda, W.
; Arenas, A.
; Arenas, I. C.
; Arias, M. L.
; Aristizábal, A.
; Aristizábal, D.
; Arrieta, E.
; Arrieta, M.
; Arroyave, H.
; Arroyo, J. A.
; Arteaga, F.
; Ascione, G.
; Asenjo, R.
; Astudillo, B.
; Atehortúa, L. H.
; Badel, A.
; Badiel, M.
; Balestrini, S.
; Barragán, R.
; Barrera, C.
; Barrera, J. C.
; Barrera, J. G.
; Benítez, L. M.
; Bermúdez, M. J.
; Bernal, O.
; Betancourt, J.
; Betancourt, J.
; Blanco, G.
; Bohórquez, R.
; Bravo, D.
; Bresciani, R.
; Builes, A.
; Buitrago, L
; Burgoa, A.
; Báez, L. P.
; Cabrales, J.
; Cabrales, M.
; Cabrera, C.
; Cadavid, A. M.
; Cadavid, E.
; Cadena, R.
; Caicedo, L. C.
; Caicedo, V.
; Calderón, J.
; Calderón, L. I.
; Camacho, J.
; Camacho, P.
; Camacho, P. A.
; Camargo, D. M.
; Campos, M. T.
; Campuzano, G.
; Capasso, A.
; Cardona, H.
; Cardona, J.
; Carreño, A.
; Carreño, M.
; Carrillo, G.
; Casariego, G.
; Cassalett, G.
; Castellanos, H.
; Castillo, M.
; Castillo, V.
; Castro, H.
; Castro, J.
; Castro, P.
; Cañas, E.
; Celis, A.
; Celis, L. A.
; Chávez, A.
; Chávez, J. C.
; Colorado, A.
; Contreras, E.
; Coral, A.
; Coronado, M.
; Correa, J. R.
; Corredor, S.
; Corzo, L.
; Corzo, O.
; Cotes, J. M.
; Cruz, A.
; Cubides, C.
; Cuellar, F.
; Cuervo, A.
; Cárdenas, A.
; Cárdenas, M.
; Cárdenas, M. E.
; Cárdenas, P. E.
; Cárdenas, W.
; De Viveros, C.
; Delgadillo, A.
; Delgado, J.
; Delgado, P.
; Donado, B. P.
; Donado, J. R.
; Duarte, E.
; Dueñas, R.
; Duque, J. G.
; Duque, M.
; Durango, L.
; Durán, A. E.
; Durán, M. A.
; Dávila, L. M.
; Díaz, A.
; Díaz, A. L.
; Díaz, C.
; Díaz, G.
; Díaz, L.
; Díaz, L. A.
; Díaz, L. H.
; Díaz, L.
; Díaz, M.
; Díaz, S.
; Díaz, V
; Echavarría, J.
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; García, E.
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; Gaviria, A.
; Gil, E.
; Giraldo, D.
; Giraldo, J. A.
; Giraldo, JC.
; Giraldo, N.
; Gomesese, O. F.
; González, G.
; González, M.
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; Guerrero, L.
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; Hernández, N.
; Herrera, V. M.
; Hoyos, A.
; Hurtado, E. F.
; Ibarra, P.
; Indaburu, D.
; Iragorri, A.
; Isaza, D.
; Jaimes, F.
; Jaimes, G.
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; Jaramillo, C. J.
; Jaramillo, G.
; Jaramillo, J.
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; Jaramillo, J. S.
; Jaramillo, M.
; Jaramillo, M. H.
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; Jiménes, M.
; Jiménez, C.
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; Silva, S. Y.
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; Solano, J. A.
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; Tenorio, C.
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; Torres, G.
; Torres, P.
; Torres, Y.
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; Téllez, M. R.
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; Uribe, C. E.
; Uribe, F.
; Uribe, W.
; Urrego, M. T.
; Vacca, M.
; Vallejo, M.
; Vanegas, D.
; Vanegas, D. I.
; Vanegas, E.
; Vargas, C.
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; Vidal, C.
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; Villa-Roel, C.
; Villalba, J. C.
; Villalobos, C.
; Villamil, C.
; Villamizar, C.
; Villamizar, E.
; Villar, J. C.
; Villegas, A.
; Villegas, F.
; Villegas, F. A.
; Villegas, M. F.
; Vázquez, C.
; Vélez, J. F.
; Vélez, L. A.
; Vélez, S.
; Yabur, M.
; Zapara, J.
; Zapata, H.
; Zapata, J.
; Zarruk, J. G.
; Zuluaga, A.
; Zuluaga, O.
.
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