Jan F. Kiviaho, Kevin Jacobson, Graeme Kennedy,
... 1.J054962 LinkGoogle Scholar[13] Mavriplis D. J., Fabiano E. and Anderson E., "Recent Advances in High-Fidelity Multidisciplinary Adjoint-Based Optimization with the NSU3D Flow Solver Framework," 55th AIAA Aerospace Sciences Meeting, AIAA SciTech Forum, AIAA Paper 2017-1669, 2017. doi:https://doi.org/10.2514/6.2017-1669 LinkGoogle Scholar[14] Fabiano E. and Mavriplis D., "Adjoint-Based Aeroacoustic Design- ...
Tópico(s): Aerodynamics and Acoustics in Jet Flows
2019 - American Institute of Aeronautics and Astronautics | AIAA Journal
Produção Nacional
Revisado por pares
Fabiano Paschoal, Anderson Dias Cezar, José L. Luque,
Using information from published articles, databases, and recent samples from the Brazilian coastal zone, a list of parasites of haemulid (grunts) fish known from the Neotropical and Nearctic regions was structured. A total of 231 species of parasites were listed totaling 775 records involving 48 hosts, distributed in 86 localities of the American Continent. Records were listed with information on hosts, habitat, distribution and new findings; a host-parasite list is also included herein.
Tópico(s): Fish biology, ecology, and behavior
2015 - Pensoft Publishers | Check List
Produção Nacional
Revisado por pares
Luís Guilherme Polizel Libardi, Rogério Teixeira de Faria, Alexandre Barcellos Dalri, Glauco de Souza Rolim, Luiz Fabiano Palaretti, Anderson Prates Coelho, Izabela Paiva Martins,
The sugarcane pre-sprouted plantlets (PSP) production system is an innovative method to enhance crop multiplication rates. This system is greenhouse-grown, where correct irrigation management is essential to maintain the production quality. The purpose of this study was to determine the water requirement of three cultivars (CTC9005HP, RB966928, and SP87365) of pre-sprouted sugarcane plantlets, in which crop evapotranspiration (ETc) is a function of the product of the crop coefficient (Kc) and reference ...
Tópico(s): Leaf Properties and Growth Measurement
2018 - Elsevier BV | Agricultural Water Management
Produção Nacional
Revisado por pares
Jennifer M. Anderson, Fabiano Oliveira, Shaden Kamhawi, Ben J. Mans, David Reynoso, Amy E. Seitz, Phillip G. Lawyer, Mark Garfield, M. Van Pham, Jesús G. Valenzuela,
Abstract Background Immune responses to sandfly saliva have been shown to protect animals against Leishmania infection. Yet very little is known about the molecular characteristics of salivary proteins from different sandflies, particularly from vectors transmitting visceral leishmaniasis, the fatal form of the disease. Further knowledge of the repertoire of these salivary proteins will give us insights into the molecular evolution of these proteins and will help us select relevant antigens for ...
Tópico(s): Vector-borne infectious diseases
2006 - BioMed Central | BMC Genomics
Produção Nacional
Revisado por pares
Carlos Alberto Silva, Sharon Anderson, Fabiano Ribeiro do Vale,
Os teores e a distribuição de carbono, nitrogênio e enxofre em frações granulométricas do solo foram analisados em dois Latossolos Vermelho-Escuros, um derivado de floresta (LE1) e outro de cerrado (LE2). O LE1, de Cordeirópolis, SP, corresponde a um solo cultivado com laranja desde 1982, sem e com calagem. O cultivo do LE2 (Planaltina, DF) foi iniciado em 1976, com o plantio de trigo, soja, arroz e sorgo, sendo esse solo cultivado nos últimos 14 anos com pastagem (Andropogon gayanus L.), sem e com ...
Tópico(s): Growth and nutrition in plants
1999 - Sociedade Brasileira de Ciência do Solo | Revista Brasileira de Ciência do Solo
Fabiano Oliveira, Ekaterina Giorgobiani, Anderson B. Guimarães-Costa, Maha Abdeladhim, James Oristian, Lamzira Tskhvaradze, Nikoloz Tsertsvadze, Mariam Zakalashvili, Jesús G. Valenzuela, Shaden Kamhawi,
Abstract Individuals exposed to sand fly bites develop humoral and cellular immune responses to sand fly salivary proteins. Moreover, cellular immunity to saliva or distinct salivary proteins protects against leishmaniasis in various animal models. In Tbilisi, Georgia, an endemic area for visceral leishmaniasis (VL), sand flies are abundant for a short period of ≤3 months. Here, we demonstrate that humans and dogs residing in Tbilisi have little immunological memory to saliva of P. kandelakii , the ...
Tópico(s): Viral Infections and Vectors
2020 - Nature Portfolio | Scientific Reports
Produção Nacional
Revisado por pares
Carlos Alberto Silva, Fabiano Ribeiro do Vale, Sharon Anderson, Alex Rodrigues Kobal,
O presente estudo, desenvolvido em laboratório no período de outubro de 1995 a janeiro de 1996, objetivou avaliar a influência da calagem e fósforo (P) sobre a mineralização de nitrogênio (N) e enxofre (S) em sete solos, com ampla variabilidade nas características químicas e físicas. Os solos (200 g), numa etapa anterior à aplicação de P (KH2PO4 p.a.), foram pré-incubados por sete dias com CaCO3p.a.Aseguir,foramincubadosnovamente,pormais70dias.OsteoresdeN (NO3- + NH4+) e S (SO4(2-)) mineralizados em condições ...
Tópico(s): Clay minerals and soil interactions
1999 - Embrapa Informação Tecnológica | Pesquisa Agropecuária Brasileira
Produção Nacional
Fabiano Anderson Pedroso, Flávia Schwarz Franceschini Zinani, Maria Luiza Sperb Indrusiak,
The objective of this study is to verify the hydrodynamic similarity between two scales of a circulating fluidized bed (CFB) reactor using computational fluid dynamics. Glicksman’s full and simplified sets of scaling parameters were used to build two 1:4 reduced models for a CFB reactor. The model was validated against experimental results of the 3rd NETL/PSRI Challenge for fluidized beds. To exploit the hydrodynamic similarity between the two scales, dimensionless vertical pressure drop profile, ...
Tópico(s): Particle Dynamics in Fluid Flows
2016 - Springer Science+Business Media | Journal of the Brazilian Society of Mechanical Sciences and Engineering
Produção Nacional
Revisado por pares
Thales Vaz Penha, Thales Sehn Körting, Leila María García Fonseca, Celso H. L. Silva, Mikhaela Aloísia Jéssie Santos Pletsch, Liana O. Anderson, Fabiano Morelli,
Mapping refined burned areas (BA) in the Brazilian Amazon is still a challenge. The main difficulty of BA detection in large areas is the presence of cloud cover and water bodies. The use of different data sources of medium spatial resolution satellite images can provide a higher availability of cloud-free images. Besides that, it may decrease the uncertainties associated with coarse spatial resolution data (>250m), which can under or overestimate BA and hinder the detection of small BA patches (<0.1km²). ...
Tópico(s): Remote Sensing in Agriculture
2020 - UNIVERSIDADE FEDERAL DE UBERLÂNDIA | Revista Brasileira de Cartografia
Produção Nacional
Revisado por pares
Brigida TL Lucena, Billy Manoel dos Santos, João LS Moreira, Ana Paula B. Moreira, Álvaro Cantini Nunes, Vasco Azevedo, Anderson Miyoshi, Fabiano L. Thompson, Marcos Antônio de Morais,
Abstract Background Bacteria may compete with yeast for nutrients during bioethanol production process, potentially causing economic losses. This is the first study aiming at the quantification and identification of Lactic Acid Bacteria (LAB) present in the bioethanol industrial processes in different distilleries of Brazil. Results A total of 489 LAB isolates were obtained from four distilleries in 2007 and 2008. The abundance of LAB in the fermentation tanks varied between 6.0 × 10 5 and 8.9 × 10 8 ...
Tópico(s): Fermentation and Sensory Analysis
2010 - BioMed Central | BMC Microbiology
Produção Nacional
Revisado por pares
Fabiano Paschoal, Fabiano Matos Vieira, Anderson Dias Cezar, José L. Luque,
Dichelyne (Cucullanellus) tornquisti n. sp. is described from the intestine of the marine fish Orthopristis ruber (Haemulidae) of Rio de Janeiro, Brazil. The new species differs from the congeners by the location of the deirids (same level) and the excretory pore (posterior) in relation to esophagus-intestinal junction and by papillae 5 to 9 not forming a subventral line. It is the first Dichelyne species described from fish family Haemulidae in the Brazilian coastal zone.
Tópico(s): Parasitic infections in humans and animals
2014 - American Society of Parasitologists | Journal of Parasitology
Ranadhir Dey, Amritanshu B. Joshi, Fabiano Oliveira, Lais Da Silva Pereira, Anderson B. Guimarães-Costa, Tiago D. Serafim, Waldionê de Castro, Iliano V. Coutinho-Abreu, Parna Bhattacharya, Shannon Townsend, Hamide Aslan, Alec Perkins, Subir Karmakar, Nevien Ismail, Morgan Karetnick, Claudio Meneses, Robert Duncan, Hira L. Nakhasi, Jesús G. Valenzuela, Shaden Kamhawi,
Leishmania donovani parasites are the cause of visceral leishmaniasis and are transmitted by bites from phlebotomine sand flies. A prominent feature of vector-transmitted Leishmania is the persistence of neutrophils at bite sites, where they protect captured parasites, leading to enhanced disease. Here, we demonstrate that gut microbes from the sand fly are egested into host skin alongside Leishmania parasites. The egested microbes trigger the inflammasome, leading to a rapid production of interleukin- ...
Tópico(s): Viral Infections and Vectors
2017 - Cell Press | Cell Host & Microbe
Fabiano Oliveira, Seydou Doumbia, Jennifer M. Anderson, Ousmane Faye, Souleymane Diarra, Pierre Traoré, Moumine Cisse, Guimba Camara, Koureissi Tall, Cheick Coulibaly, Sibiry Samake, Ibrahim Sissoko, Bourama Traoré, Daouda Diallo, Somita Kéïta, Rick M. Fairhurst, Jesús G. Valenzuela, Shaden Kamhawi,
Apart from a single report, the last publication of cutaneous leishmaniasis (CL) in Mali dates back more than 20 years. The absence of information on the current status of CL in Mali led us to conduct a cohort study in Kemena and Sougoula, two villages in Central Mali from which cases of CL have been recently diagnosed by Mali's reference dermatology center in Bamako. In May 2006, we determined the baseline prevalence of Leishmania infection in the two villages using the leishmanin skin test (LST). ...
Tópico(s): Research on Leishmaniasis Studies
2009 - Public Library of Science | PLoS neglected tropical diseases
Produção Nacional
Revisado por pares
Felipe Martini Santos, Guilherme Montandon Chaer, Anderson Ribeiro Diniz, Fabiano de Carvalho Balieiro,
Mixed-species plantations have the potential to enhance nutrient cycling and increase the overall biomass of the stand. In this study, we evaluate the dynamics of nutrient accumulation and exports in mixed-species plantations of Eucalyptus urograndis (Eucalyptus urophylla S. T. Blake × Eucalyptus grandis W. Hill ex Maiden) and Acacia mangium Willd. after five years of rotation. Monocultures of Eucalyptus urograndis, with or without nitrogen fertilization (120 kg N ha−1) (E100 and E100 + N, respectively), ...
Tópico(s): Ecology and Vegetation Dynamics Studies
2016 - Elsevier BV | Forest Ecology and Management
Produção Nacional
Revisado por pares
F. J. Hawerroth, José Luiz Petri, Flávio Gilberto Herter, Gabriel Berenhauser Leite, Jeison Furtado Leonetti, Anderson Carlos Marafon, Fabiano Simões,
A aplicação de indutores de brotação é uma das principais estratégias de manejo utilizadas para minimizar os problemas da falta de frio em frutíferas de clima temperado. Em razão da influência dos indutores de brotação sobre a resposta produtiva das plantas, a mensuração de seus efeitos ao longo do ciclo produtivo torna-se importante. Assim, o presente trabalho foi desenvolvido no ciclo 2007/2008, em Caçador/SC, objetivando avaliar diferentes combinações de cianamida hidrogenada e óleo mineral sobre ...
Tópico(s): Postharvest Quality and Shelf Life Management
2009 - INSTITUTO AGRONÔMICO DE CAMPINAS | Bragantia
Produção Nacional
Revisado por pares
Fabiano Paschoal, Anderson Dias Cezar, José L. Luque,
A new species of Acantholochus Cressey, 1984 (Cyclopoida, Bomolochidae), parasitic on the gills and opercular cavity of the barred grunt Conodon nobilis (Linnaeus, 1758), from the coastal zone of the State of Rio de Janeiro, Brazil, is described and illustrated. The new species differs from its congeners through a combination of characters that includes presence of lamellae on the spines on the third segment of the exopods of the third leg, the number of antennule segments, and the presence of one ...
Tópico(s): Helminth infection and control
2013 - Brill | Crustaceana
Produção Nacional
Revisado por pares
Felipe M. Carvalho, Dany Michell Andrade Centeno, Gustavo Tressia, Julián Arnaldo Ávila, Fabiano Eduardo Marques Cezario, Andrés Márquez-Rossy, Edwan Anderson Ariza Echeverri, Mohammad Masoumi,
The constant demand for increasing the strength without ductility loss and production cost encourages industrial and academic societies to propose novel heat treatment processing of commercial steel grades. To improve the mechanical properties of commercial spring steel, a novel quenching and partitioning (Q&P) processing was designed to deliver a complex and desirable nanostructured multicomponent microstructure by controlling the carbon partitioning kinetics. Furthermore, the partitioning of excessive ...
Tópico(s): Metal and Thin Film Mechanics
2022 - Elsevier BV | Journal of Materials Research and Technology
Produção Nacional
Revisado por pares
Auri Brackmann, Rogério de Oliveira Anese, Ricardo Fabiano Hettwer Giehl, Anderson Weber, Ana Cristina Eisermann, Ivan Sestari,
O objetivo do presente trabalho foi estudar o efeito de diferentes técnicas de pré-resfriamento para a conservação de melões Cantaloupe 'Hy Mark'. As formas de pré-resfriamento testadas foram: [1] resfriamento na câmara de armazenamento (RC); [2] pré-resfriamento com ar forçado (RAF) até a temperatura da polpa atingir 8 ºC; [3] pré-resfriamento em água (RA) até 8 ºC; [4] RA até 15 ºC e [5] 24 horas a 20 ºC antes do RC (retardamento do resfriamento - RR). Com o pré-resfriamento em ar forçado até 8 °C e o pré- ...
Tópico(s): Irrigation Practices and Water Management
2011 - INSTITUTO AGRONÔMICO DE CAMPINAS | Bragantia
Produção Nacional
Revisado por pares
Auri Brackmann, Anderson Weber, Ricardo Fabiano Hettwer Giehl, Ana Cristina Eisermann, Cláudia Kaehler Sautter, Emerson Dias Gonçalves, L. E. C. Antunes,
O mirtilo é uma fruta rica em polifenóis e antocianinas que apresenta alta atividade antioxidante. No entanto, essa atividade pode ser alterada por condições de armazenamento e processamento dos frutos. O objetivo deste trabalho foi avaliar a manutenção das qualidades físicas e químicas de frutos de mirtilo (Vaccinium ashei Reade) do cultivar Bluegem em diferentes condições de armazenamento. O delineamento experimental utilizado foi o inteiramente casualizado com quatro repetições e unidade experimental ...
Tópico(s): Growth and nutrition in plants
2010 - UNIVERSIDADE FEDERAL DE VIÇOSA | Revista CERES
Produção Nacional
Revisado por pares
Felipe Martini Santos, Fabiano de Carvalho Balieiro, Danilo Henrique dos Santos Ataíde, Anderson Ribeiro Diniz, Guilherme Montandon Chaer,
In this study, we hypothesized that a positive impact of Acacia trees when grown in mixed stands with Eucalyptus trees in N-deficient soil, leads to a higher biomass production in mixed stands relative to the monocultures. A randomized block design experiment was set up in a Brazilian Planosol to assess the dynamics of aboveground accumulation of monospecific Eucalyptus urograndis (Eucalyptus urophylla S. T. Blake × Eucalyptus grandis W. Hill ex Maiden), with or without nitrogen fertilization (E100 + ...
Tópico(s): Agroforestry and silvopastoral systems
2015 - Elsevier BV | Forest Ecology and Management
M. A. Janssen, Andrew P. Ingersoll, Michael Allison, S. Gulkis, A. Laraia, K. H. Baines, S. G. Edgington, Y. Anderson, K. Kelleher, Fabiano Oyafuso,
We present well-calibrated, high-resolution maps of Saturn’s thermal emission at 2.2-cm wavelength obtained by the Cassini RADAR radiometer through the Prime and Equinox Cassini missions, a period covering approximately 6 years. The absolute brightness temperature calibration of 2% achieved is more than twice better than for all previous microwave observations reported for Saturn, and the spatial resolution and sensitivity achieved each represent nearly an order of magnitude improvement. The brightness ...
Tópico(s): Geology and Paleoclimatology Research
2013 - Elsevier BV | Icarus
Produção Nacional
Revisado por pares
Hirotomo Kato, Jennifer M. Anderson, Shaden Kamhawi, Fabiano Oliveira, Phillip G. Lawyer, Van My Pham, Constance Souko Sangare, Sibiry Samake, Ibrahim Sissoko, Mark Garfield, Lucie Sigutova, Petr Volf, Seydou Doumbia, Jesús G. Valenzuela,
Abstract Background Salivary proteins from sandflies are potential targets for exploitation as vaccines to control Leishmania infection; in this work we tested the hypothesis that salivary proteins from geographically distant Phlebotomus duboscqi sandfly populations are highly divergent due to the pressure exerted by the host immune response. Salivary gland cDNA libraries were prepared from wild-caught P. duboscqi from Mali and recently colonised flies of the same species from Kenya. Results Transcriptome ...
Tópico(s): Insect symbiosis and bacterial influences
2006 - BioMed Central | BMC Genomics
Produção Nacional
Revisado por pares
Aryane Alves Vigato, Ian Pompermayer Machado, Matheus del‐Valle, Patrícia Aparecida Ana, Anderson Ferreira Sepulveda, Fabiano Yokaichiya, Margareth K.K.D. Franco, Messias C. Loiola, Giovana Radomille Tófoli, Cíntia Maria Saia Cereda, Mirela Inês de Sairre, Daniele Ribeiro de Araújo,
Organogels (ORGs) are remarkable matrices due to their versatile chemical composition and straightforward preparation. This study proposes the development of ORGs as dual drug-carrier systems, considering the application of synthetic monoketonic curcuminoid (m-CUR) and lidocaine (LDC) to treat topical inflammatory lesions. The monoketone curcuminoid (m-CUR) was synthesized by using an innovative method via a NbCl5-acid catalysis. ORGs were prepared by associating an aqueous phase composed of Pluronic ...
Tópico(s): Surfactants and Colloidal Systems
2022 - Multidisciplinary Digital Publishing Institute | Pharmaceutics
Produção Nacional
Revisado por pares
José Paulo Leite Guadanucci, Pilar Louisy M. Braga, Fernanda de Souza Sá,
... Monteiro, Leonardo Lessa, Rafael da Fonseca Ferreira, Willian Fabiano da Silva, Gabriela Monteiro de Castro, Thomás Souto Pires, Anderson Henrique Apolinário and Ludmila Pereira Canuto for their ...
Tópico(s): Turtle Biology and Conservation
2014 - Taylor & Francis | Journal of Natural History
Produção Nacional
Revisado por pares
Fabrício Bacelar Lima Mendes, Robério Rodrigues Silva, Gleidson Giordano Pinto de Carvalho, Fabiano Ferreira da Silva, Túlio Otávio Jardim D’Almeida Lins, Anderson Luíz Nascimento da Silva, Venício Macedo, George Abreu Filho, S. O. de Souza, Joanderson Oliveira Guimarães,
Tópico(s): Reproductive Physiology in Livestock
2014 - Springer Science+Business Media | Tropical Animal Health and Production
Produção Nacional
Revisado por pares
Cleitiane da Costa Nogueira, Carlos Eduardo de Araújo Padilha, Anderson Alles de Jesus, Domingos Fabiano de Santana Souza, Cristiane Fernandes de Assis, Francisco Canindé de Sousa Júnior, Everaldo Silvino dos Santos,
In this study, we investigated four conventional pretreatments under pressurized conditions, as well as in situ detoxification using polyethylene glycol (PEG 400), for the simultaneous saccharification and fermentation (SSF) of green coconut fibers. The highest fermentable sugar production (22.05% g/g untreated fiber) was reached with pressurized dilute alkaline pretreatment. In the SSF, the addition of PEG favored ethanol production compared to that in experiments without the polymer, reaching a maximum ...
Tópico(s): Polyamine Metabolism and Applications
2018 - Elsevier BV | Industrial Crops and Products
Produção Nacional
Revisado por pares
Anderson Alles de Jesus, Domingos Fabiano de Santana Souza, Jackson Araújo de Oliveira, Marcell S. Deus, Maxwell Gomes da Silva, Elton Franceschi, Silvia Maria Egues, Cláudio Dariva,
The non-catalytic esterification of oleic acid with supercritical ethanol was carried out in a tubular reactor at different temperatures (150–300 °C), molar ratios (1:1–6:1) and volumetric flow rates (0.001–0.005 dm3/min). The highest free fatty acid conversion was obtained at 300 °C, ethanol to oleic acid molar ratio of 6:1 and fixed pressure of 150 bar. A phenomenological axial dispersion model was developed to evaluate the intrinsic effects of the operating variables on the conversion of oleic acid ...
Tópico(s): Process Optimization and Integration
2018 - Elsevier BV | Energy Conversion and Management
Produção Nacional
Revisado por pares
Tainã Rapp Py-Daniel, Anderson Kennedy Soares De‐Lima, Fabiano Campos Lima, Aline Pic‐Taylor, Osmindo Rodrigues Pires Júnior, Antônio Sebben,
The mouse, chicken, African clawed frog, and zebrafish are considered ¨model organisms¨ due to their extensive embryological and genetic characterization. However, they are far from representative of known diversity, impairing phylogenetic analyses of developmental patterns. Since squamates have historically received limited attention in developmental studies, we here describe the developmental sequence for Tropidurus torquatus, and provide the first post-ovipositional developmental series for the ...
Tópico(s): Wildlife Ecology and Conservation
2016 - Wiley | The Anatomical Record
Produção Nacional
Revisado por pares
Marcelo Demarzo, Rodrigo Cariri Chalegre de Almeida, João José Neves Marins, Thiago Gomes da Trindade, Maria Inêz Padula Anderson, Aírton Tetelbom Stein, Fabiano Gonçalves Guimarães, Felipe Proenço de Oliveira, Fernanda Plesmann de Carvalho, Flávio Dias Silva, Francisco Arsego de Oliveira, Gustavo Tenório Carlos, Jaciara Bezerra Marques, Leika Aparecida Ishigama Geniole, Lia Márcia Cruz da Silveira, Maria Eugênia Bresolin Pinto, Nayra Almeida da Silva, Rodrigo Cechelero Bagatelli, Sandro Rodrigues Batista, Tânia de Araújo Barboza, Thiago Dias Sarti, Vitor Hugo Lima Barreto, Gustavo Gusso, Mourad Ibrahim Belaciano,
O presente documento traz diretrizes construídas conjuntamente pela Associação Brasileira de Educação Médica (ABEM) e a Sociedade Brasileira de Medicina de Família e Comunidade (SBMFC) com a intenção de apoiar as escolas médicas de forma objetiva e prática, na elaboração de projetos político-pedagógicos no contexto da Atenção Primária à Saúde. Um marco reconhecido na política educacional brasileira é a publicação das Diretrizes Curriculares Nacionais, as quais flexibilizam as organizações curriculares, ...
Tópico(s): Male Reproductive Health Studies
2012 - Associção Brasileira de Educação Médica | Revista Brasileira de Educação Médica
Produção Nacional
Revisado por pares
Anderson Fragoso dos Santos, Fabiano Araújo Pires, Hugo Emiliano de Jesus, André Luis Souza dos Santos, Raquel S. Peixoto, Alexandre Soares Rosado, Claudia M. d’Avila-Levy, Marta H. Branquinha,
Two psychrophilic bacterial samples were isolated from King George Island soil, in Antarctica. The phylogenetic analysis based on the 16S rRNA (rrs) gene led to the correlation with the closest related isolates as Sporosarcina aquimarina (99%) and Algoriphagus antarcticus(99%), with query coverage of 99% and 98%, respectively.The spent culture media from both isolates displayed proteolytic activities detected by sodium dodecyl sulfate polyacrylamide gel electrophoresis containing gelatin as protein ...
Tópico(s): Phytase and its Applications
2015 - Brazilian Academy of Sciences | Anais da Academia Brasileira de Ciências