Alkanes-assisted low temperature formation of highly ordered SBA-15 with large cylindrical mesopores

Highly ordered SBA-15 silicas with large cylindrical mesopores (similar to 15 nm) are successfully obtained with the help of NH4F by controlling the initial reaction temperatures in the presence of excess amounts of alkanes.

Factors influencing the catalytic activity of SBA-15-supported copper nanoparticles in CO oxidation

Copper nanoparticles were deposited onto mesoporous SBA-15 support via two different routes: post-grafting method and incipient wet impregnation method. Both XRD and TEM reveal that the post-grafting can make Cu particles very small in size and highly dispersed into channels of SBA-15, while the impregnation method mainly forms large Cu particles on the external surface of SBA-15. TPR experiments show that CuO species formed by the post-grafting method is more reducible than that prepared by the impregnation method. The catalytic activity tests for CO oxidation manifests that the sample prepared by the post-grafting method has a much higher activity than that prepared by the impregnation method, with a lowering of 50 degrees C for T-50, showing a strong dependence of catalytic activity on the size and dispersion of Cu particles. Besides the preparation procedure, other factors including calcination temperature, reduction treatment, copper loading as well as the feed composition, have an important effect on the catalytic activity. The best performance was obtained when the catalyst was calcined at 500 degrees C and reduced at 550 degrees C. The calcination and reduction treatment at high temperature have been found to be necessary to completely remove the organic residue and to generate active metallic copper particles. (c) 2005 Elsevier B.V. All rights reserved.

USO DO óleo de cravo no manejo de peixes - programa 15.

2009

Large-pore mesoporous SBA-15 silica particles with submicrometer size as stationary phases for high-speed CEC separation

A new mesoporous sphere-like SBA-15 silica was synthesized and evaluated in terms of its suitability as stationary phases for CEC. The unique and attractive properties of the silica particle are its submicrometer particle size of 400 nm and highly ordered cylindrical mesopores with uniform pore size of 12 nm running along the same direction. The bare silica particles with submicrometer size have been successfully employed for the normal-phase electrochromatographic separation of polar compounds with high efficiency (e.g., 210 000 for thiourea), which is matched well with its submicrometer particle size. The Van Deemeter plot showed the hindrance to mass transfer because of the existence of pore structure. The lowest plate height of 2.0 mu m was obtained at the linear velocity of 1.1 mm/s. On the other hand, because of the relatively high linear velocity (e.g., 4.0 mm/s) can be generated, high-speed separation of neutral compounds, anilines, and basic pharmaceuticals in CEC with C-18-modified SBA-15 silica as stationary phases was achieved within 36, 60, and 34 s, respectively.

Formação de um rebanho de corte utilizando novilhas cobertas aos 15 e 18 meses de idade.

Este trabalho visa orientar os produtores e técnicos que têm interesse em formar novos rebanhos com fêmeas acasaladas aos 15 ou 18 meses de idade. Tais orientações, no entanto, só serão válidas quando outros aspectos de manejo forem também observados, tais como: controle sanitário eficiente, estação de monta bem definida, controle adequado da qualidade e quantidade de pastagem disponível, etc.

Eficiência de fungicidas para o controle da mancha-alvo, Corynespora cassiicola, na safra 2014/15: resultados sumarizados dos ensaios cooperativos.

2015

Eficiência de fungicidas multissítios e fertilizantes no controle da ferrugem asiática da soja, Phakopsora pachyrhizi, na safra 2014/15: resultados sumarizados dos ensaios cooperativos.

2015

Eficiência de fungicidas para o controle da ferrugem-asiática da soja, Phakopsora pachyrhizi, na safra 2014/15: resultados sumarizados dos ensaios cooperativos.

2015

The Limitations of Law in promoting synergy between environment and development policies in developing countries

Journal of Energy and Natural Resources Law, 24(4) pp.574-606 RAE2008

Representing Europe's Citizens? Electoral Institutions and the Failure of Parliamentary Representation

Scully, Roger, Farrell, David, Representing Europe's Citizens? Electoral Institutions and the Failure of Parliamentary Representation (Oxford: Oxford University Press, 2007), pp.xiii+230 RAE2008

The Power of Partnerships in Global Governance

Abrahamsen, Rita, 'The Power of Partnerships in Global Governance', Third World Quarterly (2004) 25(8) pp.1453-1467 RAE2008

Metaphorizing the Holocaust: The Ethics for Comparison

This paper focuses on the ethics of metaphor and other forms of comparison that invoke National Socialism and the Holocaust. It seeks to answer the question: Are there criteria on the basis of which we can judge whether metaphors and associated tropes “use” the Holocaust appropriately? In analyzing the thrust and workings of such comparisons, the paper also seeks to identify and clarify the terminology and concepts that allow productive discussion. In line with its conception of metaphor that is also rhetorical praxis, the paper focuses on specific controversies involving the metaphorization of the Holocaust, primarily in Germany and Austria. The paper develops its argument through the following process. First, it examines the rhetorical/political contexts in which claims of the Holocaust’s comparability (or incomparability) have been raised. Second, it presents a review (and view) of the nature of metaphor, metonymy, and synecdoche. It applies this framework to (a) comparisons of Saddam Hussein with Hitler in Germany in 1991; (b) the controversies surrounding the 2004 poster exhibition “The Holocaust on Your Plate” in Germany and Austria, with particular emphasis on the arguments and decisions in cases before the courts in those countries; and (c) the invocation of “Auschwitz” as metonym and synecdoche. These examples provide the basis for a discussion of the ethics of comparison. In its third and final section the paper argues that metaphor is by nature duplicitous, but that ethical practice involving Holocaust comparisons is possible if one is self-aware and sensitive to the necessity of seeing the “other” as oneself. The ethical framework proposed by the paper provides the basis for evaluationg the specific cases adduced.

Funkcje postępowań antydumpingowych prawa Unii Europejskiej

Wydział Prawa i Administracji

Manifestações orais em crianças em tratamento oncológico

Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Medicina Dentária