Produção Nacional
Adriano Alves Teixeira, Charbel José Chiappetta Jabbour, Jorge Henrique Caldeira de Oliveira, Rosane Aparecida Gomes Battistelle, Rosani de Castro,
... BrazilSearch for more papers by this authorJorge Henrique Caldeira Oliveira, Jorge Henrique Caldeira Oliveira caldeira@fearp.usp.br University ... BrazilSearch for more papers by this authorJorge Henrique Caldeira Oliveira, Jorge Henrique Caldeira Oliveira caldeira@fearp.usp.br University of São ...
Tópico(s): Corporate Social Responsibility Reporting
2011 - Wiley | Environmental Quality Management
D.M. Fradinho, Carlos Pascoal Neto, Dmitry V. Evtuguin, Fernando Caldeira Jorge, Mark Irle, M.H. Gil, J.Pedrosa De Jesus,
The chemical composition of maritime pine (Pinus pinaster) bark and of alkaline bark extracts has been investigated with bark from trees grown in Portugal. Bark is composed of lignin and polyphenolics (ca. 44%), polysaccharides (ca. 39%), dichoromethane, ethanol and water extractives (ca. 17%) and ashes (ca. 1%). The lignin content determined by the Klason method, after the extraction of polyphenolics (tannin-rich fraction) from the bark by alkali solution, is 33.2%. Cellulose content is about 24%. Hemicelluloses ( ...
Tópico(s): Phytochemicals and Antioxidant Activities
2002 - Elsevier BV | Industrial Crops and Products
Catarina Pereira, Fernando Caldeira Jorge, Mark Irle, J.M.F. Ferreira,
Data are presented on the effects that cork, blue gum, or maritime pine, all grown in Portugal, have on cement setting. These materials were mixed with cement either without any treatment or after being extracted previously with a range of solvents (ranging from nonpolar to very polar). Other experiments were carried out in which extractives or calcium chloride were added to the cement paste. All lignocellulosic substrates have detrimental effects on cement setting, which is mostly seen by a delay ...
Tópico(s): Natural Fiber Reinforced Composites
2006 - Springer Science+Business Media | Journal of Wood Science
Mário Chilundo, Wilson de Sousa, Evan Christen, Joaquim Faduco, Henning Bjørnlund, Etevaldo Cheveia, P. Munguambe, Fernando Caldeira Jorge, Richard Stirzaker, André van Rooyen,
Over four years, a research-for-development project was implemented at the 25 de Setembro irrigation scheme in Mozambique. The project introduced agricultural innovation platforms to overcome barriers to production such as input and output supply chains and poorly maintained irrigation canals. Soil moisture and nutrient monitoring tools were provided so that farmers could improve their irrigation and fertilizer management. The farmers increased their crop production through the use of the tools ...
Tópico(s): Agricultural Innovations and Practices
2020 - Taylor & Francis | International Journal of Water Resources Development
Catarina Pereira, Fernando Caldeira Jorge, Mark Irle, J.M.F. Ferreira,
It is already known by the scientific and industrial communities that lignocellulosic substrates are, to a certain extent, inhibitors of the hydration reaction of cement. The extent to which and how they influence such reactions is still a matter of debate. Several techniques, such as calorimetry, i.e., the measurement of the heat evolved or obtaining temperature profiles during the hydration, the determination of extractive contents of lignocellulosic substrates and their relation with the characteristics ...
Tópico(s): Innovative concrete reinforcement materials
2006 - Springer Science+Business Media | Journal of Wood Science
José Morais, P. Nuno Palma, Carlos Frazão, Jorge Caldeira, Jean LeGall, Isabel Moura, José J. G. Moura, M.A. Carrondo,
... Resonance StudiesJose Morais, P. Nuno Palma, Carlos Frazao, Jorge Caldeira, Jean LeGall, Isabel Moura, Jose J. G. Moura, ...
Tópico(s): Metal-Catalyzed Oxygenation Mechanisms
1995 - American Chemical Society | Biochemistry
Govardus A. H. de Jong, Jorge Caldeira, Jie Sun, Jaap A. Jongejan, Simon de Vries, Thomas M. Loehr, Isabel Moura, José J. G. Moura, Johannis A. Duine,
... Dehydrogenase from Comamonas testosteroniGovardus A. H. de Jong, Jorge Caldeira, Jie Sun, Jaap A. Jongejan, Simon de Vries, ...
Tópico(s): Enzyme Catalysis and Immobilization
1995 - American Chemical Society | Biochemistry
Produção Nacional
Revisado por pares
Maria Augusta Gonçalves Fujaco, Mariângela Garcia Praça Leite, Antônio Henrique Caldeira Jorge Neves,
Soil erosion is a major problem observed in terrestrial ecosystems. Monitoring and identifying potential areas for erosion becomes extremely important for the better management of these areas. The main aim of this study was to develop a Geographic Information System script tool based on the universal soil loss equation (USLE), which calculates soil loss in three large agricultural sub-basins. Algorithms were implemented in the graphical interface of ModelBuilder and later in Python programming language, ...
Tópico(s): Soil and Land Suitability Analysis
2016 - Gorceix Foundation | REM - International Engineering Journal
Filipe S. Dias, David L. Miller, Tiago A. Marques, Joana Marcelino, Maria C. Caldeira, Jorge Orestes Cerdeira, Miguel N. Bugalho,
Mediterranean oak woodlands are ecosystems of high conservation and socio-economic value that occur in Southwestern Europe, North Africa and California. Oak regeneration failure is occurring in these ecosystems and may be endangering their long-term conservation. Most studies suggest that inadequate management practices may be contributing to oak regeneration failure. Forest certification is a voluntary type of certification, based on third-party auditing of compliance with performance-based sustainable ...
Tópico(s): Forest Insect Ecology and Management
2016 - Elsevier BV | Biological Conservation
Fernando Caldeira Jorge, Maria Alzira Pimenta Dinis,
Wastewater must be treated, and it is part of the development process of a given country to extend sewer networks and to build wastewater treatment plants. Wastewater treatment inevitably generates sewage sludge, and a trend for extending wastewater treatment infrastructures implies increasing quantities of sewage sludge produced. The fate of such a residue is a key environmental issue. The existing European environmental legislation is becoming more and more restrictive, namely in terms of the ...
Tópico(s): Wastewater Treatment and Reuse
2013 - | Proceedings of the Institution of Civil Engineers - Waste and Resource Management
Fernando Caldeira Jorge, Paulo Brito, Lina Pepino, António Portugal, Helena Gil, Rui Pereira da Costa,
In order to give a contribution to the development of processes aiming at making use of maritime pine bark, an abundant resource in Portugal, this paper highlights, in short, the nowadays importance of extracts of the bark or heartwood of some forest species, as well as the barks themselves. It is included a definition of tannins and their chemistry is described. The main applications are discussed, either those already established at the industrial scale or the latest research results: leather ...
Tópico(s): Collagen: Extraction and Characterization
2001 - EDP Sciences | Silva Lusitana
Jorge Caldeira, P. Nuno Palma, Manuela Regalla, Jorge Lampreia, Juan J. Calvete, Wolfram Schäfer, Jean LeGall, Isabel Moura, José J. G. Moura,
Flavodoxin was isolated and purified from Desulfovibrio desulfuricans ATCC 27774, a sulfate‐reducing organism that can also utilize nitrate as an alternative electron acceptor. Mid‐point oxidation‐reduction potentials of this flavodoxin were determined by ultraviolet/visible and EPR methods coupled to potentiometric measurements and their pH dependence studied in detail. The redox potential E 2 , for the couple oxidized/semiquinone forms at pH 6.7 and 25°C is –40 mV, while the value for the semiquinone/ ...
Tópico(s): Photosynthetic Processes and Mechanisms
1994 - Wiley | European Journal of Biochemistry
Carla Pereira, Fernando Caldeira Jorge, J.M.F. Ferreira,
Abstract The calcium (Ca), sodium (Na), and potassium (K) contents of blue gum, maritime pine, and cork increased after these lignocellulosics were stirred with the filtrate of a cement suspension or a solution of calcium hydroxide. The adsorbed cations could be released easily by treatment with an acidic solution. It is suggested that those raw materials, and lignocellulosics in general, act as cation exchange substrates when they are mixed with cement and water to make wood–cement composites. The ...
Tópico(s): Plant Pathogens and Fungal Diseases
2005 - Taylor & Francis | Journal of Wood Chemistry and Technology
Produção Nacional
Revisado por pares
Christiano Oliveira‐Santos, Izabel Regina Fischer Rubira‐Bullen, Solange Aparecida Caldeira Monteiro, Jorge Esquiche León, Reinhilde Jacobs,
Abstract Objective This study aimed to assess the presence of additional foramina and canals in the anterior palate region, through cone beam computed tomography ( CBCT ) images, describing their location, direction, and diameter. Materials & Methods CBCT exams of 178 subjects displaying the anterior maxilla were included and the following parameters were registered: gender; age group; presence of additional foramina in the anterior palate ( AFP ) with at least 1 mm in diameter; location and diameter of AFP ; ...
Tópico(s): Dental Implant Techniques and Outcomes
2012 - Wiley | Clinical Oral Implants Research
Mara Soares da Silva, Eva R. Vão, Márcio Temtem, Luís Mafra, Jorge Caldeira, Ana Aguiar‐Ricardo, Teresa Casimiro,
Molecularly imprinted polymers (MIPs) of poly(ethylene glycol dimethacrylate) and poly(N-isopropylacrylamide-co-ethylene glycol dimethacrylate) were synthesized for the first time in supercritical carbon dioxide (scCO(2)), using Boc-L-tryptophan as template. Supercritical fluid technology provides a clean and one-step synthetic route for the preparation of affinity polymeric materials with sensing capability for specific molecules. The polymeric materials were tested as stationary HPLC phases for ...
Tópico(s): Microfluidic and Capillary Electrophoresis Applications
2009 - Elsevier BV | Biosensors and Bioelectronics
Carlos D. Brondino, M.C.G. Passeggi, Jorge Caldeira, Maria João Almendra, Maria J. Feio, José J. G. Moura, Isabel Moura,
We report the characterization of the molecular properties and EPR studies of a new formate dehydrogenase (FDH) from the sulfate-reducing organism Desulfovibrio alaskensis NCIMB 13491. FDHs are enzymes that catalyze the two-electron oxidation of formate to carbon dioxide in several aerobic and anaerobic organisms. D. alaskensis FDH is a heterodimeric protein with a molecular weight of 126±2 kDa composed of two subunits, α=93±3 kDa and β=32±2 kDa, which contains 6±1 Fe/molecule, 0.4±0.1 Mo/molecule, ...
Tópico(s): Microbial Fuel Cells and Bioremediation
2003 - Springer Science+Business Media | JBIC Journal of Biological Inorganic Chemistry
Claudia Huber, Jorge Caldeira, J. A. Jongejan, Helmut Simon,
Tópico(s): Enzyme Catalysis and Immobilization
1994 - Springer Science+Business Media | Archives of Microbiology
André Barata, Jorge Caldeira, R. Botelheiro, Daniela Pagliara, Manuel Malfeito‐Ferreira, V. Loureiro,
The wine spoilage yeast species Dekkera bruxellensis, after inoculation in red wines, displayed three survival patterns characterized by: i) initial lag phase followed by growth and sequential death; ii) initial death phase leading to reduced viable counts followed by growth and sequential death; and iii) death phase leading to complete loss of viability. These survival patterns were observed for the same strain in different dry red wine blends with 12% (v/v) ethanol and pH 3.50, in the absence of ...
Tópico(s): Fungal and yeast genetics research
2007 - Elsevier BV | International Journal of Food Microbiology
Ana R. Brás, Sara Carolina Henriques, Teresa Casimiro, Ana Aguiar‐Ricardo, João Sotomayor, Jorge Caldeira, Celina Santos, Madalena Dionı́sio,
In the present work a simple but selective reversed‐phase high performance liquid chromatographic method (HPLC) was developed for the analysis of the nematic liquid crystal mixture E7 to determine precisely the composition of the liquid crystal mixture used in PDLC film preparation. Ultraviolet absorption spectrophotometry experiments were carried out to determine the HPLC detection wavelength and to characterize the absorptivity constants of E7 constituents. The technique developed is applied in ...
Tópico(s): Photochemistry and Electron Transfer Studies
2007 - Taylor & Francis | Liquid Crystals
Claude Moré, Marcel Asso, G. Roger, Bruno Guigliarelli, Jorge Caldeira, José J. G. Moura, Patrick Bertrand,
The aldehyde oxidoreductase from Desulfovibrio gigas belongs to the family of molybdenum hydroxylases. Besides a molybdenum cofactor which constitutes their active site, these enzymes contain two [2Fe-2S]2+,1+ clusters which are believed to transfer the electrons provided by the substrate to an acceptor which is either a FAD group or an electron-transferring protein. When the three metal centers of D. gigas AOR are simultaneously paramagnetic, splittings due to intercenter spin−spin interactions ...
Tópico(s): Metal-Catalyzed Oxygenation Mechanisms
2005 - American Chemical Society | Biochemistry
Jorge Caldeira, Richard Feicht, Hiltturd White, Miguel Teixeira, José J. G. Moura, Helmut Simon, Isabel Moura,
Enoate reductase (EC) is a protein isolated from Clostridium tyrobutyricum that contains iron, labile sulfide, FAD, and FMN. The enzyme reduces the α,β carbon-carbon double bond of nonactivated 2-enoates and in a reversible way that of 2-enals at the expense of NADH or reduced methyl viologen. UV-visible and EPR potentiometric titrations detect a semiquinone species in redox intermediate states characterized by an isotropic EPR signal at g = 2.0 without contribution at 580 nm. EPR redox titration shows ...
Tópico(s): Metal complexes synthesis and properties
1996 - Elsevier BV | Journal of Biological Chemistry
Antonio Romero, Jorge Caldeira, Jean LeGall, Isabel Moura, José J. G. Moura, Maria João Romão,
The crystal structures of the flavodoxin from Desulfovibrio desulfuricans ATCC 27774 have been determined and refined for both oxidized and semi‐reduced forms to final crystallographic R ‐factors of 17.9% (0.8–0.205‐nm resolution) and 19.4% (0.8–0.215‐nm resolution) respectively. Native flavodoxin crystals were grown from ammonium sulfate with cell constants a = b = 9.59 nm, c = 3.37 nm (oxidized crystals) and they belong to space group P3 2 21. Semireduced crystals showed some changes in cell dimensions: ...
Tópico(s): Redox biology and oxidative stress
1996 - Wiley | European Journal of Biochemistry
Jorge Caldeira, Valérie Belle, Marcel Asso, Bruno Guigliarelli, Isabel Moura, José J. G. Moura, Patrick Bertrand,
Molybdoenzymes of the xanthine oxidase family contain two [2Fe-2S]1+,2+ clusters that are bound to the protein by very different cysteine motifs. In the X-ray crystal structure of Desulfovibrio gigas aldehyde oxidoreductase, the cluster ligated by a ferredoxin-type motif is close to the protein surface, whereas that ligated by an unusual cysteine motif is in contact with the molybdopterin [Romao, M. J., Archer, M., Moura, I., Moura, J. J. G., LeGall, J., Engh, R., Schneider, M., Hof, P., and Huber, ...
Tópico(s): Electrocatalysts for Energy Conversion
2000 - American Chemical Society | Biochemistry
A. Cid, Ana Picado, J.B. Correia, Rúben Chaves, Héber Silva, Jorge Caldeira, António Matos, Mário Diniz,
Recently, the scientific community became aware of the potential ability of nanoparticles to cause toxicity in living organisms. Therefore, many of the implications for aquatic ecosystems and its effects on living organisms are still to be evaluated and fully understood. In this study, the toxicity of nanodiamonds (NDs) was assessed in the freshwater bivalve (Corbicula fluminea) following exposure to different nominal concentrations of NDs (0.01, 0.1, 1, and 10 mg l−1) throughout 14 days. The NDs were ...
Tópico(s): Diamond and Carbon-based Materials Research
2014 - Elsevier BV | Journal of Hazardous Materials
Patrícia Branco, Diana Francisco, Christophe Chambon, Michel Hébraud, Nils Arneborg, M. Gabriela Almeida, Jorge Caldeira, Helena Albergaria,
Saccharomyces cerevisiae plays a primordial role in alcoholic fermentation and has a vast worldwide application in the production of fuel-ethanol, food and beverages. The dominance of S. cerevisiae over other microbial species during alcoholic fermentations has been traditionally ascribed to its higher ethanol tolerance. However, recent studies suggested that other phenomena, such as microbial interactions mediated by killer-like toxins, might play an important role. Here we show that S. cerevisiae ...
Tópico(s): Probiotics and Fermented Foods
2013 - Springer Science+Business Media | Applied Microbiology and Biotechnology
Varongsiri Kemsawasd, Patrícia Branco, M. Gabriela Almeida, Jorge Caldeira, Helena Albergaria, Nils Arneborg,
The roles of cell-to-cell contact and antimicrobial peptides in the early death of Lachanchea thermotolerans CBS2803 during anaerobic, mixed-culture fermentations with Saccharomyces cerevisiae S101 were investigated using a commercially available, double-compartment fermentation system separated by cellulose membranes with different pore sizes, i.e. 1000 kDa for mixed- and single-culture fermentations, and 1000 and 3.5–5 kDa for compartmentalized-culture fermentations. SDS–PAGE and gel filtration ...
Tópico(s): Advanced Chemical Sensor Technologies
2015 - Oxford University Press | FEMS Microbiology Letters
Produção Nacional
Revisado por pares
Silvia Palma-Rojas, Armando Caldeira-Pires, Jorge Madeira Nogueira,
Tópico(s): Agriculture Sustainability and Environmental Impact
2015 - Springer Science+Business Media | The International Journal of Life Cycle Assessment
Patrícia Branco, Diana Francisco, Margarida Monteiro, M. Gabriela Almeida, Jorge Caldeira, Nils Arneborg, Catarina Prista, Helena Albergaria,
Tópico(s): Bacteriophages and microbial interactions
2016 - Springer Science+Business Media | Applied Microbiology and Biotechnology
Sergey A. Bursakov, C. Carneiro, Maria João Almendra, R.O. Duarte, Jorge Caldeira, Isabel Moura, José J. G. Moura,
Some sulfate reducing bacteria can induce nitrate reductase when grown on nitrate containing media being involved in dissimilatory reduction of nitrate, an important step of the nitrogen cycle. Previously, it was reported the purification of the first soluble nitrate reductase from a sulfate-reducing bacteria Desulfovibrio desulfuricans ATCC 27774 (S.A. Bursakov, M.-Y. Liu, W.J. Payne, J. LeGall, I. Moura, and J.J.G. Moura (1995) Anaerobe 1, 55-60). The present work provides further information about ...
Tópico(s): Wastewater Treatment and Nitrogen Removal
1997 - Elsevier BV | Biochemical and Biophysical Research Communications
Victor Gomes Lauriano Souza, João Ricardo Afonso Pires, Carolina Rodrigues, Patrícia Freitas Rodrigues, Andreia A.S. Lopes, Rui J. C. Silva, Jorge Caldeira, Maria Paula Duarte, Francisco Manuel Braz Fernandes, Isabel M. Coelhoso, Ana Luísa Almaça da Cruz Fernando,
Novel bionanocomposite films of chitosan/montmorillonite (CS/MMT) activated with ginger essential oil (GEO) were produced and characterized in terms of their physical and morphological properties. The homogenization process led to a good interaction between the chitosan and the nanoparticles, however the exfoliation was diminished when GEO was incorporated. Film glass transition temperature did not statistically change with the incorporation of either MMT or GEO, however the value was slightly reduced, ...
Tópico(s): Electrospun Nanofibers in Biomedical Applications
2019 - Multidisciplinary Digital Publishing Institute | Coatings