... S0219024921500217Paulo Ferreira, Oussama Tilfani, Éder Pereira, Cleónidas Tavares, Hernane Pereira, My Youssef El Boukfaoui Dynamic Connectivity in ... 2020.2996135Paulo Ferreira, Éder J.A.L. Pereira, Hernane B.B. Pereira From Big Data to Econophysics ...
Tópico(s): Opinion Dynamics and Social Influence
1963 - University of Chicago Press | Journal of Political Economy
... 05.009WENDEL J. TELES PONTES, ERIVELTON G. CUNHA, HERNANE D. ARAÚJO, REGINALDO BARROS, ERALDO LIMA Virgin and ...
Tópico(s): Insect and Arachnid Ecology and Behavior
1982 - University of Chicago Press | The American Naturalist
Andrew Sih, James J. Krupa, Steven E. Travers,
... cz/zoac089Natália de Souza Ribas, Jeremy N. McNeil, Hernane Dias Araújo, Bruna de Souza Ribas, Eraldo Lima ...
Tópico(s): Animal Behavior and Reproduction
1990 - University of Chicago Press | The American Naturalist
Arlo W. Fast, Kent E. Carpenter, Victor J. Estilo, Hernane J. Gonzales,
The effects of pond water depth (0·5, 1·0 and 1·5 m) and artificial circulation (with/without) on certain pond dynamic processes were evaluated in a factorial design. Deep ponds had more uniform temperatures, with less rapid temperature changes, greater whole pond respiration, and greater temperature and oxygen stratification. Artificial circulation reduced thermal and oxygen stratification. Sediment respiration, which was estimated using a new technique, was more than three times greater than plankton ...
Tópico(s): Water Quality Monitoring Technologies
1988 - Elsevier BV | Aquacultural Engineering
Produção Nacional
Revisado por pares
Luiz Cláudio de Santa Maria, Ana L. C. Santos, Philippe C. Oliveira, Hernane da Silva Barud, Younès Messaddeq, Sidney J. L. Ribeiro,
This article presents a study about the synthesis of colloidal silver (Ag)/biopolymer where Ag submicron particles were prepared in situ on bacterial cellulose (BC) produced by Gluconacetobacter xylinus. Different reducing agents were compared (hydrazine, hydroxylamine or ascorbic acid) together with the influence of gelatin or polyvinylpyrrolidone (PVP) employed as colloid protectors. Particle size distribution and morphology were investigated by scanning electron microscope (SEM). SEM images show silver ...
Tópico(s): Nanomaterials for catalytic reactions
2009 - Elsevier BV | Materials Letters
Produção Nacional
Revisado por pares
Danilo Hernane Spatti, Ivan Nunes da Silva, Wesley Fernando Usida, Rogério Andrade Flauzino,
Two different fuzzy approaches to voltage control in electric power distribution systems are introduced in this paper. The real-time controller in each case would act on power transformers equipped with under-load tap changers. Learning systems are employed to turn the voltage-control relays into adaptive devices. The scope of this study has been limited to the power distribution substation, and the voltage measurements and control actions are carried out on the secondary bus. The capacity of fuzzy ...
Tópico(s): Smart Grid Energy Management
2009 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Power Delivery
Mohammed S. Ba‐Shammakh, Hernane Gante Caruso, Ali Elkamel, Eric Croiset, Peter Douglas,
The cement industry is responsible for approximately 5% of global anthropogenic carbon dioxide emissions emitting nearly 900 kg of CO2 for every 1000 kg of cement produced. Effective control strategies to mitigate these emissions are discussed and a mathematical programming model able to suggest the best cost effective strategy is outlined. Control costs consisting of operating and investment costs along with the efficiency of control options are taken into account in the model. A representative ...
Tópico(s): Environmental Impact and Sustainability
2008 - | American Journal of Environmental Sciences
Produção Nacional
Revisado por pares
Cristiano Legnani, Cecília Vilani, Vanessa L. Calil, Hernane da Silva Barud, Welber G. Quirino, C. A. Achete, Sidney J. L. Ribeiro, M. Cremona,
Tópico(s): Nanomaterials and Printing Technologies
2008 - Elsevier BV | Thin Solid Films
Produção Nacional
Revisado por pares
Hernane da Silva Barud, Adalberto M. de Araújo Júnior, Daniele B. Santos, Rosana Maria Nascimento de Assunção, Carla da Silva Meireles, Daniel Alves Cerqueira, Guimes Rodrigues Filho, Clóvis Augusto Ribeiro, Younès Messaddeq, Sidney J. L. Ribeiro,
Cellulose acetate (CA) is one of the most important cellulose derivatives and its main applications are its use in membranes, films, fibers, plastics and filters. CAs are produced from cellulose sources such as: cotton, sugar cane bagasse, wood and others. One promissory source of cellulose is bacterial cellulose (BC). In this work, CA was produced from the homogeneous acetylation reaction of bacterial cellulose. Degree of substitution (DS) values can be controlled by the acetylation time. The characterization ...
Tópico(s): Biofuel production and bioconversion
2008 - Elsevier BV | Thermochimica Acta
Produção Nacional
Revisado por pares
G. M. TEIXEIRA, Maíra Aguiar, C. F. CARVALHO, D. R. DANTAS, Myrna Cunha, José Morais, Hernane Borges de Barros Pereira, José García Vivas Miranda,
Verbal language is a dynamic mental process. Ideas emerge by means of the selection of words from subjective and individual characteristics throughout the oral discourse. The goal of this work is to characterize the complex network of word associations that emerge from an oral discourse from a discourse topic. Because of that, concepts of associative incidence and fidelity have been elaborated and represented the probability of occurrence of pairs of words in the same sentence in the whole oral ...
Tópico(s): Advanced Text Analysis Techniques
2010 - World Scientific | International Journal of Modern Physics C
Produção Nacional
Revisado por pares
Maurı́cio A. P. Silva, Douglas F. Franco, Adílson R. Brandão, Hernane da Silva Barud, Francisco A. Dias Filho, Sidney J. L. Ribeiro, Younès Messaddeq, Luiz Fernando Cappa de Oliveira,
Transparent amorphous bulk materials have been prepared through the coacervation process of sodium polyphosphate and Ni2+ and Co2+ chloride solutions. Structural and spectroscopic properties were analyzed by X-ray diffraction, thermogravimetric analysis, UV–vis, infrared and Raman spectroscopic techniques. Different optical properties and water absorption tendencies were observed for the polyphosphate coacervates. The symmetric P–Ob and P–Ot stretching modes on the Raman spectra for the coacervates ...
Tópico(s): Luminescence Properties of Advanced Materials
2010 - Elsevier BV | Materials Chemistry and Physics
Produção Nacional
Revisado por pares
Hernane Borges de Barros Pereira, Gilney Figueira Zebende, Marcelo A. Moret,
Tópico(s): Evolutionary Algorithms and Applications
2010 - Elsevier BV | Computers & Education
Produção Nacional
Revisado por pares
Hernane Borges de Barros Pereira, Inácio de Sousa Fadigas, Valter de Senna, Marcelo A. Moret,
In this paper we study the topological structure of semantic networks based on titles of papers published in scientific journals. It discusses its properties and presents some reflections on how the use of social and complex network models can contribute to the diffusion of knowledge. The proposed method presented here is applied to scientific journals where the titles of papers are in English or in Portuguese. We show that the topology of studied semantic networks are small-world and scale-free.
Tópico(s): Advanced Text Analysis Techniques
2010 - Elsevier BV | Physica A Statistical Mechanics and its Applications
Produção Nacional
Revisado por pares
Ana Rita de Mello Costa, Flávia Silva Marquiafável, Mirela Mara de Oliveira Lima Leite Vaz, Bruno Alves Rocha, Paula Carolina Pires Bueno, Pedro Luiz M. Amaral, Hernane da Silva Barud, Andresa Ap. Berreta-Silva,
Tópico(s): Free Radicals and Antioxidants
2010 - Springer Science+Business Media | Journal of Thermal Analysis and Calorimetry
Produção Nacional
Revisado por pares
Gustavo Frigi Perotti, Hernane da Silva Barud, Younès Messaddeq, Sidney J. L. Ribeiro, Vera Regina Leopoldo Constantino,
Tópico(s): Polymer Nanocomposites and Properties
2010 - Elsevier BV | Polymer
Produção Nacional
Danilo Hernane Spatti, Ivan Nunes da Silva, Wesley Fernando Usida, Rogério Andrade Flauzino,
A fuzzy control strategy for voltage regulation in electric power distribution systems is introduced in this article. This real-time controller would act on power transformers equipped with under-load tap changers. The fuzzy system was employed to turn the voltage-control relays into adaptive devices. The scope of the present study has been limited to the power distribution substation, and both the voltage measurements and control actions are carried out on the secondary bus. The capacity of fuzzy ...
Tópico(s): Power System Optimization and Stability
2010 - Institute of Electrical and Electronics Engineers | IEEE Latin America Transactions
Produção Nacional
Revisado por pares
Ígor Augusto Negri Donini, Denise Toledo Bonemer De Salvi, Fabiana Keiko Fukumoto, Wilton R. Lustri, Hernane da Silva Barud, Reinaldo Marchetto, Younès Messaddeq, Sidney J. L. Ribeiro,
O presente trabalho discute os recentes avanços na biossíntese e na produção de celulose bacteriana (CB) pela gram-negativa, aeróbia e aceto-ácida Gluconacetobacter. xylinus. A CB se difere de seu par vegetal, principalmente devido ao seu caráter de fibras nanométricas, contra o caráter micrométrico da vegetal, são extruídas através da parede celular de G. xylinus, com isso sua estrutura macroscópica é mecanicamente e fisicamente mais resistente, abrindo grandes oportunidades de aplicações tecnológicas ...
Tópico(s): Biofuel production and bioconversion
2010 - UNIVERSIDADE EST.PAULISTA JÚLIO DE MESQUITA FILHO | Eclética Química
Produção Nacional
Revisado por pares
Hernane da Silva Barud, J. L. Souza, Daniele B. Santos, Marisa Spirandeli Crespi, Clóvis Augusto Ribeiro, Younès Messaddeq, Sidney J. L. Ribeiro,
Bacterial cellulose (BC)/poly(3-hydroxybutyrate) (PHB) composite membranes were prepared from chloroform-swollen BC membranes and PHB chloroform solutions. Relative contents were varied from 25 to 90 wt.% of PHB. Macroscopically homogeneous composite membranes were characterized by scanning electron microscopy, Fourier-transformed infrared spectroscopy, X rays diffraction, thermal analysis and stress–strain measurements. Depending on the relative compositions membranes coating of BC microfibrils by ...
Tópico(s): Nanocomposite Films for Food Packaging
2010 - Elsevier BV | Carbohydrate Polymers
Produção Nacional
Luiz C. Santa Maria, Ana L. C. Santos, Philippe C. Oliveira, Aline S. S. Valle, Hernane da Silva Barud, Younès Messaddeq, Sidney J. L. Ribeiro,
A simple method was developed to load a large amount of silver nanoparticles into bacterial cellulose (BC) produced by Gluconacetobacter xylinus in a controlled manner. Due to the high electron-rich oxygen density in the BC macromolecules and the large surface area of the BC nanoporous structure as an effective nanoreactor, the in situ direct metallization technique was successfully used to synthesize Ag nanoparticles with an average diameter of 30 nm and a loading content of at least 5 wt. (%), approximately. ...
Tópico(s): Nanoparticles: synthesis and applications
2010 - Associação Brasileira de Polímeros | Polímeros
Produção Nacional
Hernane da Silva Barud, Celina E. Barrios, Thaís Regiani, Rodrigo Fernando Costa Marques, Marc Verelst, Jeannette Dexpert‐Ghys, Younès Messaddeq, Sidney J. L. Ribeiro,
Hydrated bacterial cellulose (BC) membranes obtained from cultures of Acetobacter xylinum were used in the preparation of silver nanoparticles containing cellulose membranes. In situ preparation of Ag nanoparticles was achieved from the hydrolytic decomposition of silver triethanolamine (TEA) complexes. Scanning electron microscopy (SEM) images and X-ray diffraction (XRD) patterns both lead to the observation of spherical metallic silver particles with mean diameter of 8 nm well adsorbed onto the BC ...
Tópico(s): Electrospun Nanofibers in Biomedical Applications
2007 - Elsevier BV | Materials Science and Engineering C
Produção Nacional
Revisado por pares
Hernane da Silva Barud, Clóvis Augusto Ribeiro, Marisa Spirandeli Crespi, Marco António Utrera Martines, J. Dexpert-Ghys, Rodrigo Fernando Costa Marques, Younès Messaddeq, Sidney J. L. Ribeiro,
Tópico(s): Nanocomposite Films for Food Packaging
2007 - Springer Science+Business Media | Journal of Thermal Analysis and Calorimetry
Produção Nacional
Revisado por pares
Hernane da Silva Barud, Rosana Maria Nascimento de Assunção, Marco António Utrera Martines, Jeannette Dexpert‐Ghys, Rodrigo Fernando Costa Marques, Younès Messaddeq, Sidney J. L. Ribeiro,
Tópico(s): Aerogels and thermal insulation
2007 - Springer Science+Business Media | Journal of Sol-Gel Science and Technology
Produção Nacional
Revisado por pares
Guimes Rodrigues Filho, D. S. Monteiro, Carla da Silva Meireles, Rosana Maria Nascimento de Assunção, Daniel Alves Cerqueira, Hernane Silva Barud, Sidney J. L. Ribeiro, Younes Messadeq,
In this work, the viability of recycling newspaper for producing cellulose acetate was tested. Newspaper recycling is extremely important not only for the environment preservation, but also from the economical point of view of aggregating value to this residue. Cellulose acetate was produced from a homogeneous acetylation, and then characterized by FTIR, DSC and TGA. Acetylation times were 48 h for as received newspaper (CA48) and 24 h for delignified newspaper (CA24), resulting in cellulose diacetate ( ...
Tópico(s): Lignin and Wood Chemistry
2007 - Elsevier BV | Carbohydrate Polymers
Produção Nacional
Revisado por pares
Rafael Leite de Oliveira, Hernane da Silva Barud, Rosana Maria Nascimento de Assunção, Carla da Silva Meireles, Geandre Oliveira Carvalho, Guimes Rodrigues Filho, Younès Messaddeq, Sidney J. L. Ribeiro,
Tópico(s): Biofuel production and bioconversion
2011 - Springer Science+Business Media | Journal of Thermal Analysis and Calorimetry
Produção Nacional
Revisado por pares
Hernane Fernandes Pinhal, Maristela Rosália Anastácio, Pedro Augusto Porto Carneiro, Valdiney José da Silva, Tâmara Prado de Morais, José Magno Queiróz Luz,
Atualmente, percebe-se uma preocupação em relação às plantas do cerrado, com grande enfoque nas fruteiras em função de suas características e usos. Apesar de ser uma área ainda pouco explorada, é crescente o número de estudos dessas espécies nativas, dentre eles, os que abrangem as técnicas de cultura de tecidos. Isso se deve uma vez que essa ferramenta biotecnológica permite a propagação de espécies com dificuldade de germinação, minimiza o problema de sementes recalcitrantes, promove a produção ...
Tópico(s): Plant tissue culture and regeneration
2011 - UNIVERSIDADE FEDERAL DE SANTA MARIA | Ciência Rural
Produção Nacional
Revisado por pares
Sybele Saska, Hernane da Silva Barud, Ana Maria Minarelli Gaspar, Reinaldo Marchetto, Sidney J. L. Ribeiro, Younès Messaddeq,
The aim of this study was to develop and to evaluate the biological properties of bacterial cellulose-hydroxyapatite (BC-HA) nanocomposite membranes for bone regeneration. Nanocomposites were prepared from bacterial cellulose membranes sequentially incubated in solutions of CaCl(2) followed by Na(2)HPO(4). BC-HA membranes were evaluated in noncritical bone defects in rat tibiae at 1, 4, and 16 weeks. Thermogravimetric analyses showed that the amount of the mineral phase was 40%-50% of the total weight. ...
Tópico(s): biodegradable polymer synthesis and properties
2011 - Hindawi Publishing Corporation | International Journal of Biomaterials
Produção Nacional
Revisado por pares
Bruno Alves Rocha, Marina Rezende Rodrigues, Paula Carolina Pires Bueno, Ana Rita de Mello Costa-Machado, Mirela Mara de Oliveira Lima Leite Vaz, Andresa Piacezzi Nascimento, Hernane Silva Barud, Andresa Aparecida Berretta-Silva,
Tópico(s): Phytochemistry Medicinal Plant Applications
2011 - Springer Science+Business Media | Journal of Thermal Analysis and Calorimetry
Produção Nacional
Revisado por pares
Hernane da Silva Barud, Thaís Regiani, Rodrigo Fernando Costa Marques, Wilton R. Lustri, Younès Messaddeq, Sidney J. L. Ribeiro,
Antimicrobial bacterial cellulose-silver nanoparticles composite membranes have been obtained by “in situ” preparation of Ag nanoparticles from hydrolytic decomposition of silver nitrate solution using triethanolamine as reducing and complexing agent. The formation of silver nanoparticles was evidenced by the X-ray diffraction, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and absorption in the UV-Visible (350 nm to 600 nm). Thermal and mechanical properties together with ...
Tópico(s): Nanomaterials for catalytic reactions
2011 - Hindawi Publishing Corporation | Journal of Nanomaterials
Produção Nacional
Revisado por pares
Jéssica Alves Marins, Bluma G. Soares, Karim Dahmouche, Sidney J. L. Ribeiro, Hernane da Silva Barud, Denise Bonemer,
Tópico(s): Advanced Sensor and Energy Harvesting Materials
2011 - Springer Science+Business Media | Cellulose
Produção Nacional
Revisado por pares
Guimes Rodrigues Filho, Rosana Maria Nascimento de Assunção, Júlia Graciele Vieira, Carla da Silva Meireles, Daniel Alves Cerqueira, Hernane da Silva Barud, Sidney J. L. Ribeiro, Younès Messaddeq,
In the present work, methylcellulose produced from sugar cane bagasse was characterized by FTIR, WAXD, DTA and TGA techniques. Two samples were synthesized: methylcellulose A and methylcellulose B. The only difference in the process was the addition of fresh reactants during the preparation of methylcellulose B. The ratio between the absorption intensities of the C–H stretching band at around 2900 cm−1 and O–H stretching at around 3400 cm−1 for methylcellulose B is higher than for methylcellulose ...
Tópico(s): Nanocomposite Films for Food Packaging
2006 - Elsevier BV | Polymer Degradation and Stability