Produção Nacional
Revisado por pares
Maritcheli De Almeida Vieira, Liliane Dutra Brignol, Guilherme Curi,
... artigo apresenta resultados da pesquisa de recepção de Órfãos da Terra (Rede Globo, 2019) e objetiva compreender como a ...
Tópico(s): Migration, Ethnicity, and Economy
2022 - UNIVERSIDADE METODISTA DE SÃO PAULO | Comunicação & Sociedade
José L. Figueiredo, Juliana P. S. Sousa, Carla A. Orge, M.F.R. Pereira, J.J.M. Órfão,
Tópico(s): Adsorption and biosorption for pollutant removal
2010 - Springer Science+Business Media | Adsorption
Produção Nacional
Revisado por pares
Cláudio M. P. Pereira, Hélio A. Stefani, Karla P. Guzen, Aline T. G. Orfao,
Some 1H-benzotriazoles have been synthesised in good yields in short times by reaction of ophenylenediamine with sodium nitrite in acetic acid under ultrasound irradiation. Also, the ultrasoundassisted preparation of 1-acylbenzotriazoles is described. Keywords: Benzotriazoles, acylbenzotriazoles, ultrasound irradiation, sonochemistry, heterocycles
Tópico(s): Synthesis of Tetrazole Derivatives
2007 - Bentham Science Publishers | Letters in Organic Chemistry
Julio J. Criado, Emilio Fernández, J.L. Manzano, Ángel Cabo Alonso, Susana Bárrena, Manuel Medarde, Rafael Peláez, María Dolores Tabernero, Alberto Órfão,
Two square planar derivatives of Pt(en)Cl2 with intrinsic fluorescence in aqueous solution at room temperature, with quantum yields (Φ) 0.11 and 0.10, respectively, have been synthesized and characterized as [Pt(en)(CG)Cl] (Complex 1) and [Pt(en)(CG)2] (Complex 2) (en = ethylenediamine, CG = cholylglycinate). Complexes 1 and 2 exchange just one ligand (chloride or cholylglycinate, respectively) when reacted with water or 5'-GMP to give the same chemical species. After reaction with DNA oligonucleotides or ...
Tópico(s): DNA and Nucleic Acid Chemistry
2005 - American Chemical Society | Bioconjugate Chemistry
Produção Nacional
Revisado por pares
Tomáš Kalina, Juan Flores‐Montero, Quentin Lécrevisse, Carlos E. Pedreira, Vincent H. J. van der Velden, Michaela Nováková, Ester Mejstříková, Ondřej Hrušák, Sebastian Böttcher, Dennis Karsch, Łukasz Sędek, Amélie Trinquand, Nancy Boeckx, Joana Caetano, Vahid Asnafi, Paulo Lúcio, Margarida Lima, Ana Helena Santos, Paola Bonaccorso, Alita J. van der Sluijs‐Gelling, Anton W. Langerak, M Martín-Ayuso, Tomasz Szczepański, Jacques J. M. van Dongen, Alberto Órfão,
Flow cytometric immunophenotyping has become essential for accurate diagnosis, classification, and disease monitoring in hemato-oncology. The EuroFlow Consortium has established a fully standardized "all-in-one" pipeline consisting of standardized instrument settings, reagent panels, and sample preparation protocols and software for data analysis and disease classification. For its reproducible implementation, parallel development of a quality assurance (QA) program was required. Here, we report on ...
Tópico(s): Radiation Detection and Scintillator Technologies
2014 - Wiley | Cytometry Part A
Carlos Cerver�, L. Escribano, Jesús F. San Miguel, Beatriz D�az-Agust�n, Pilar Bravo, Jesús Villarrubia, Ram�n Garc�a-Sanz, Jos� L. Velasco, Pilar Herrera, Mario Bautista-Vargas, Marcos Gonz�lez, Jos� L. Navarro, Alberto Orfao,
Bcl-2 protein plays a major role in the prevention of programmed cell death of differentiating cells. In the present study, the expression of cytoplasmic bcl-2 by human Bone Marrow Mast Cells (BMMC) from both normal and pathological bone marrow samples was examined. A total of 35 subjects corresponding to 9 healthy volunteers, 8 cases of adult indolent systemic mast cell disease (SMCD), 4 cases of pediatric mastocytosis (PM), 11 cases of hematological malignancies (HM), 2 cases of reactive bone marrow, ...
Tópico(s): Click Chemistry and Applications
1999 - Wiley | American Journal of Hematology
Cet article propose d’analyser la télénovela brésilienne Orfãos da Terra à l’aune de la notion de la ...
Tópico(s): Urban and sociocultural dynamics
2024 - Laval University | Communication
Produção Nacional
Beatriz Martins de Castro, Valquíria Michela John,
... de 2019, a Rede Globo exibia a telenovela Órfãos da Terra. A vilã, Dalila (Alice Wegmann), era uma árabe ...
Tópico(s): Literature, Culture, and Criticism
2023 - | Revista Brasileira de Estudos da Homocultura
Marcelo Juchem, Adriana Stela Bassini Edral, Amália Agatha Gregório,
... imagem de beijo entre duas mulheres da novela Órfãos da Terra, de 2019. A partir do monitoramento social da ...
Tópico(s): Social Media and Politics
2023 - Hertz Wendel de Camargo | Ação Midiática – Estudos em Comunicação Sociedade e Cultura
Produção Nacional
Daniela Jakubaszko, Anna Carolina Cicilini, Letícia Gouveia Veras,
... de imigrantes refugiados sírios no Brasil na telenovela “Órfãos da Terra” (TV Globo, 2019) de Duca Rachid e Thelma ...
Tópico(s): Cultural, Media, and Literary Studies
2021 - UNIVERSIDADE FEDERAL DE SANTA MARIA | Cadernos de Comunicação
Alı́rio E. Rodrigues, J.J.M. Órfão, André Zoulalian,
Abstract An assessment is made of the influence of convective effects in the behaviour of calalyst pellets with large pores Concentration profiles and effectiveness factors are calculated for zero order reactions in isothermal regimes using a model which involves convective transport as well as diffusion and reaction processes in the pellet Errors made in current reactor design are discussed. A predictive method for calculating the intraparticle fluid velocity in industrial cases is reported. Finally, ...
Tópico(s): Petroleum Processing and Analysis
1984 - Taylor & Francis | Chemical Engineering Communications
Paula Díez, Noelia Dasilva, María González‐González, Sergio Matarraz, Juan Casado‐Vela, Alberto Órfão, Manuel Fuentes,
Microarrays constitute a new platform which allows the discovery and characterization of proteins. According to different features, such as content, surface or detection system, there are many types of protein microarrays which can be applied for the identification of disease biomarkers and the characterization of protein expression patterns. However, the analysis and interpretation of the amount of information generated by microarrays remain a challenge. Further data analysis strategies are essential ...
Tópico(s): Advanced Proteomics Techniques and Applications
2012 - Multidisciplinary Digital Publishing Institute | Microarrays
M.F.R. Pereira, Samanta F Soares, J.J.M. Órfão, José L. Figueiredo,
The surface chemistry of a commercial activated carbon has been selectively modified, without changing significantly its textural properties, by means of chemical treatments, using HNO3, H2O2, NH3, and thermal treatments under a flow of H2 or N2. The resultant samples were characterized in terms of their surface chemistry and textural properties, and subsequently tested in the removal of different classes of dyes. It was shown that the surface chemistry of the activated carbon plays a key role in ...
Tópico(s): Adsorption, diffusion, and thermodynamic properties of materials
2003 - Elsevier BV | Carbon
Produção Nacional
Revisado por pares
Rodrigo Cella, Aline T. G. Orfao, Hélio A. Stefani,
Here we report an ultrasound-assisted synthesis of stereodefined 1,3-dienes by Suzuki–Miyaura cross-coupling reactions of vinylic tellurides and potassium β-styryl trifluoroborate salt.
Tópico(s): Chemical Synthesis and Reactions
2006 - Elsevier BV | Tetrahedron Letters
Francisco Villacañas, M.F.R. Pereira, J.J.M. Órfão, José L. Figueiredo,
The adsorption of model aromatic compounds (phenol, aniline, nitrobenzene) on modified activated carbons has been investigated. Electrostatic and dispersive adsorbate/adsorbent interactions are involved in this process. Their influence on the uptake of the above mentioned aromatic compounds has been evaluated using different solution pH conditions and activated carbon samples with different surface chemistries. These samples were obtained by modification of a commercial activated carbon by means ...
Tópico(s): Analytical Chemistry and Chromatography
2005 - Elsevier BV | Journal of Colloid and Interface Science
P.C.C. Faria, Daniela Monteiro, J.J.M. Órfão, M.F.R. Pereira,
Several metal oxides, as well as metal oxides supported on activated carbon, were assessed as ozonation catalysts for the removal of selected organic compounds. Two transition metals (Mn, Co) and one rare earth element (Ce) were chosen for the preparation of the two series of catalysts. These materials were used in the ozonation of two aromatic compounds (aniline and sulfanilic acid) and one textile azo dye (CI Acid Blue 113). The results were compared with those obtained with non-catalytic ozonation. ...
Tópico(s): Analytical chemistry methods development
2008 - Elsevier BV | Chemosphere
P.C.C. Faria, J.J.M. Órfão, M.F.R. Pereira,
Tópico(s): Analytical chemistry methods development
2008 - Springer Science+Business Media | Catalysis Letters
P.C.C. Faria, J.J.M. Órfão, M.F.R. Pereira,
The oxidation of hazardous organic compounds leads to the formation of several by-products, being oxalic acid and oxamic acid final oxidation products refractory to ozonation. The present work aimed to study the ozonation of those carboxylic acids in the presence of activated carbon at different solution pH. For comparative purposes, experiments of adsorption on activated carbon, ozonation, and ozonation in the presence of activated carbon were carried out. In order to clarify the reaction mechanism, ...
Tópico(s): Electrochemical Analysis and Applications
2007 - Elsevier BV | Applied Catalysis B Environment and Energy
P.C.C. Faria, J.J.M. Órfão, M.F.R. Pereira,
The influence of the surface chemical groups of an activated carbon on the removal of different classes of dyes is evaluated. Starting from the same material (NORIT GAC 1240 PLUS), the following treatments were carried out in order to produce a series of samples with different surface chemical properties but with no major differences in their textural properties: oxidation in the liquid phase with 6 M HNO3 and 10 M H2O2 (acid materials) and heat treatment at 700°C in H2 or N2 flow (basic materials). ...
Tópico(s): Nanomaterials for catalytic reactions
2004 - Elsevier BV | Water Research
Miguel Lizana, Roberto Martín-Sánchez, Rafael Márquez, Juana Ciudad, Antonio López, Alberto Órfão,
Abstract The DNA content per diploid nucleus (2 C-value) was determined for the eight species of Iberian salamanders by flow cytometry. All species showed high values, which are characteristic of Caudata. The species with the lowest value was Pleurodeles waltl (48.25 pg DNA/cell) and Salamandra salamandra had the highest values (70.55 pg DNA/cell). There were no statistical differences between sexes in any of the eight species and DNA content was not directly related with phylogeny. The values obtained ...
Tópico(s): Genetic diversity and population structure
2000 - Brill | Amphibia-Reptilia
Emilio Rodríguez-Fernández, J. Manzano, A. Alonso, M.J. Almendral, Martín Pérez‐Andres, Alberto Órfão, José María Criado,
Cisplatin is one of the chemotherapeutic agents used the most for testicular, ovarian and several other cancers. In order to overcome cisplatin resistance, other platinum (Pt) compounds have been developed and, in the last ten years, Pt-derivatives with reporting activity have also been synthesized. The first generation of reporting Pt-compounds was based on linking a fluorescent molecule (e.g. cyanine) to cisplatin, but more recent studies have focused on strategies to synthesize intrinsically fluorescent ...
Tópico(s): DNA and Nucleic Acid Chemistry
2009 - Bentham Science Publishers | Current Medicinal Chemistry
Abstract The kinetics of processes involving solids may be determined from experiments under non‐isothermal conditions. On analyzing data by integral methods, it is necessary to calculate the temperature integral, which does not have an analytical solution. Instead of performing the numerical integration, most of the researchers prefer to circumvent the problem by using approximate expressions, not always adequate. The widespread use of inaccurate approximations does not contribute to a coherent ...
Tópico(s): Energetic Materials and Combustion
2007 - Wiley | AIChE Journal
Elodie G. Rodrigues, M.F.R. Pereira, Xiaowei Chen, Juan J. Delgado, J.J.M. Órfão,
The main goal of this work is the study of the relationship between the surface chemical characteristics of activated carbon and the performance of the respective gold-supported catalysts in the oxidation of glycerol. For that purpose, a set of modified activated carbons with different levels of oxygenated functional groups on the surface, but with no major differences in their textural parameters, was prepared. A strong effect of the activated carbon surface chemistry on the catalytic activity ...
Tópico(s): Nanomaterials for catalytic reactions
2011 - Elsevier BV | Journal of Catalysis
José L. Figueiredo, M.F.R. Pereira, M.M.A. Freitas, J.J.M. Órfão,
A NORIT activated carbon was modified by different chemical and thermal treatments (including oxidation in the gas and liquid phases) in order to obtain materials with different surface properties. Several techniques were used to characterize these materials including nitrogen adsorption, chemical and thermal analyses, XPS, TPD and DRIFTS. The results obtained by TPD agree quantitatively with the elemental and proximate analyses of the oxidized materials, and qualitatively with the observations by ...
Tópico(s): Analytical chemistry methods development
1999 - Elsevier BV | Carbon
Selamawit Ashagre Messele, O.S.G.P. Soares, J.J.M. Órfão, Christophe Bengoa, Josep Font,
Nitrogen-free and nitrogen-doped carbon xerogel materials, from urea and melamine precursors, were prepared at different pH and evaluated as adsorbents/catalysts in the removal of phenol. Then, zero-valent iron (ZVI) was supported on these carbon xerogel materials and its activity was again evaluated for phenol removal by adsorption and catalytic wet peroxide oxidation (CWPO). The prepared samples were characterized by N2 adsorption at -196°C, pH at the point of zero charge (pHPZC) and elemental analysis. ...
Tópico(s): Adsorption and biosorption for pollutant removal
2017 - Taylor & Francis | Environmental Technology
Produção Nacional
Revisado por pares
María González‐González, José María Sayagués, Luis Muñoz‐Bellvís, Carlos E. Pedreira, Marcello L. R. de Campos, Jacinto García, José A. Sánchez Alcázar, Patrick F. Braz, Breno L. Galves, Luis González, Óscar Bengoechea, M. Abad, Juan Jesús Cruz, L. Muñoz Bellido, Emilio Fonseca, Paula Díez, Pablo Juanes‐Velasco, Alicia Landeira‐Viñuela, Quentin Lécrevisse, Enrique Montalvillo, Rafael Góngora, Óscar Blanco, José Manuel Sánchez-Santos, Joshua LaBaer, Alberto Órfão, Manuel Fuentes,
Sporadic Colorectal Cancer (sCRC) is the third leading cause of cancer death in the Western world, and the sCRC patients presenting with synchronic metastasis have the poorest prognosis. Genetic alterations accumulated in sCRC tumor cells translate into mutated proteins and/or abnormal protein expression levels, which contribute to the development of sCRC. Then, the tumor-associated proteins (TAAs) might induce the production of auto-antibodies (aAb) via humoral immune response. Here, Nucleic Acid ...
Tópico(s): Advanced Proteomics Techniques and Applications
2021 - Multidisciplinary Digital Publishing Institute | Cancers
Nagendranath Mahata, Adelino F. Cunha, J.J.M. Órfão, José L. Figueiredo,
Ni nanoparticles and filamentous carbon were generated simultaneously by decomposing methane over Raney nickel catalyst. Nickel nanoparticles were stabilized by filamentous carbon. The Ni–filamentous carbon composite materials were tested as catalysts for the hydrogenation of ortho- and para-chloronitrobenzene, producing chloroanilines selectively (99% yield). The catalysts exclusively reduce the nitro group in chloronitrobenzenes, leaving the C–Cl bond untouched. A possible explanation for this ...
Tópico(s): Catalytic Processes in Materials Science
2009 - Elsevier BV | Catalysis Communications
M.F.R. Pereira, J.J.M. Órfão, José L. Figueiredo,
Activated carbon fibers from different precursors and with different degrees of activation were used as catalysts for the oxidative dehydrogenation of ethylbenzene. Within each group, the fibers exhibited similar surface chemistries, so that the observed catalytic performances could be interpreted exclusively in terms of their textural properties. Analysis of the catalytic results highlighted common trends. In particular, the fibers with an average micropore width larger than 1.2 nm were found to ...
Tópico(s): Aerogels and thermal insulation
2002 - Elsevier BV | Carbon
Nagendranath Mahata, Adelino F. Cunha, J.J.M. Órfão, José L. Figueiredo,
Simultaneous generation of filamentous carbon and nickel nanoparticles was achieved by decomposing methane over Raney-type skeletal nickel catalyst. Nickel nanoparticles were generated by metal disintegration and stabilized by filamentous carbon. This composite material was tested as a catalyst for the hydrogenation of nitrobenzene. The active phase of the catalysts consists of nickel nanoparticles in reduced form with superficial oxide layers. The catalysts exhibited excellent performance, producing ...
Tópico(s): Electrocatalysts for Energy Conversion
2008 - Elsevier BV | Applied Catalysis A General
Vera P. Santos, Samuel Bastos, M.F.R. Pereira, J.J.M. Órfão, José L. Figueiredo,
The oxidation of toluene over a cryptomelane (K-OMS-2) catalyst was investigated at temperatures between 100 and 300 °C. The catalyst was tested both in temperature-programmed experiments (light-off curves) and in isothermal tests. The carbonaceous deposits retained in the porous structure after the isothermal tests were evaluated by temperature-programmed oxidation. The results show that gradual deactivation occurs at temperatures below 268 °C (which corresponds to the peak maximum in the TPO curves). ...
Tópico(s): Zeolite Catalysis and Synthesis
2010 - Elsevier BV | Catalysis Today