318 documents found, page 1 of 32
Microfiltration with chemistry treating of commercial membranes and microporous...
Haneda, Renata N.; Ikegami, Rogério; Fortulan, Carlos A.; Purquerio, Benedito M.; Longo, Elson [UNESP]; Fontes, Sérgio R.Made available in DSpace on 2022-04-29T08:47:27Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-11-20; Department of Mechanical Engineering São Carlos School of Engineering University of São Paulo - USP, Av. Trabalhador Sao -Carlense, 400, 13566-590 Sao Carlos, Sao Paulo; Department of Chemistry University of São Carlos - LIEC/UFSCar/Unesp, São Carlos, São Paulo; Department of Chemistry University of São...
Pb1-x Cax TiO3 solid solution (x=0.0, 0.25, 0.50, and 0.75): A theoretical and ...
De Lázaro, Sérgio Ricardo; De Lucena, Poty Rodrigues; Sambrano, Júlio Ricardo [UNESP]; Pizani, Paulo Sérgio; Beltrán, ArmandoMade available in DSpace on 2022-04-29T08:47:39Z (GMT). No. of bitstreams: 0 Previous issue date: 2007-04-25; In this paper we report an experimental and theoretical study based on a periodic density functional investigation into selected compositions of Pb1-x Cax TiO3 (x=0.0, 0.25, 0.50, and 0.75). Based on our findings, we propose that the pseudocubic structure of these perovskites presents a long-range tende...
Influence of adding iron-steel waste materials on hot metal quality
Vernilli, Fernando; Silva, Sidiney Nascimento; Longo, Elson [UNESP]; Saito, Eduardo; Nascimento, Vinicius Franco; Cangani, Maxwell PereiraMade available in DSpace on 2022-04-29T08:47:51Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-12-01; Hazardous waste materials, notably industrial ones, are of particular concern, inasmuch as if they are not dealt with adequately, they may pose a serious threat to the environment. In this connection, those industries which develop reuse and/or recycling policies for their wastes in their own manufactur...
Diagnostic study and campaign life extention of companhia siderúrgica nacional ...
Silva, Sidiney Nascimento; Marques, Oscar Rosa; Barbosa, Giancarlo Sterhling; Junior, Fernando Vernilli; Longo, Elson [UNESP]Made available in DSpace on 2022-04-29T08:47:51Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-12-01; Back in 2000, CSN along with DME, conducted a diagnostic study on Hot Blast Stoves # 1, 2 and 3 of Blast Furnace # 2, after 19 years of operation and close to the end of its design campaign - originally set to last for 20 years. The primary purpose of this study was to support the Company's efforts gear...
Microstructural and nonohmic properties of zno.pr6o11 CoO polycrystalline system
Ramírez, Miguel Angel [UNESP]; Fernández, José Francisco; De Frutos, José; Bueno, Paulo Roberto [UNESP]; Longo, Elson [UNESP]Made available in DSpace on 2022-04-29T08:48:12Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-01-01; The microstructure and electrical properties of varistors composed of (95-x) ZnO + x Pr6O11 + 5 CoO (ZPC), (x = 0.1, 0.5 and 1.0) and sintered at 1300 and 1350 °C, were investigated. According to X-ray diffraction, several phases (ZnO, Pr2O3 and Pr 2CoO4) are present when x = 1.0. Using Scanning Electro...
Preparation and characterization of in(OH)3: Eu nanostructures obtained by micr...
Motta, Fabiana V.; Marques, Ana Paula A.; Paskocimas, Carlos A.; Bomio, Mauricio R. D.; Abreu, Maria Fernanda C.; Li, Máximo S.; Leite, Edson R.Made available in DSpace on 2022-04-29T09:12:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-03-01; Crystalline europium-doped indium hydroxide (In(OH)3:Eu) nanostructures were prepared by a rapid and efficient Microwave-Assisted Hydrothermal (MAH) method. Nanostructures were obtained at a low temperature. FE-SEM images confirm that these samples are composed of 3D nanostructures. XRD, optical diffuse...
Produção de pigmentos inorgânicos a partir da solução de cloreto ferroso proven...
Silva, Sidiney Nascimento; Vernilli, Fernando; De Oliveira Vieira, Andre Tarcizo; Longo, Elson [UNESP]Made available in DSpace on 2022-04-29T09:23:53Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-12-01; In this work is analyzed the synthesis of maghemite, γ - Fe 2O3, magnetite, Fe304, goethite, α - FeOOH, and hematite, α - Fe2O3, by application of excess of iron chlorate ionic aqueous solution from Continuous Pickling line (CPL) of Companhia Siderurgica Nacional (CSN), about of 500 m3/month, as a new p...
Synthesis and characterization of novel pH sensitive PAAM-PMAA-CMC hydrogels an...
Aouada, Fauze A. [UNESP]; Bortolin, Adriel; De Moura, Márcia R.; Longo, Elson [UNESP]; Mattoso, Luiz H.C. [UNESP]Made available in DSpace on 2022-04-29T09:35:24Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-09-01; Recently, the applications of hydrogels as a carrier vehicle for the controlled release of fertilizers in the agricultural field have been extensively proposed due to the unique properties of these materials, such as their biodegradability, low-toxicity, high water uptake and reversible properties. The ...
Influence of calcium concentration on the structural and electrical properties ...
Silva, Margarete S.; Cavalheiro, Alberto A.; Zaghete, Maria A. [UNESP]; Cilense, Mário [UNESP]; Longo, Elson [UNESP]; Cavenago, Gustavo F.Made available in DSpace on 2022-04-29T12:38:27Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-01-01; Lead zirconate titanate, with Zr/Ti ratio of 53/47 was prepared by the polymeric precursor method. The powders were doped with 0, 0.2, 0.4 end 0.6 mol% of Ca2+ and characterized by XRD. The percentages of tetragonal and rhombohedral phases were calculated through Rietveld refinement. A systematic study ...
An overview on the photoluminescence emission in ZNO single crystal. A joint ex...
Lima, Renata C.; Andrés, J.; Sambrano, Júlio R. [UNESP]; Longo, Valéria M. [UNESP]; Macário, Leilane R. [UNESP]; Espinosa, José W. M.; Pizani, Paulo S.Made available in DSpace on 2022-04-29T07:13:17Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-12-01; The purpose of the present chapter is to join both the experimental and theoretical results to explain the different responses of photoluminescence (PL) emission at room temperature of ZnO powders by using different structural order-disorder effects, associated with intermediate and short range defects....