one of the most important applications of carbon nanotubes (cnts) is as reinforcement of metal matrix composites, because of their excellent mechanical properties. in this study, al-tio2-multi walled carbon nanotubes (mwcnts) nanocomposite is fabricated using isostatic pressing followed by hot extrusion. mechanical alloying is used to mix powders of aluminium, tio2 and mwcnts. tio2 with the amo...

In recent decades, democratic countries have signed hundreds of international environmental agreements (IEAs). Most of these are weak and do not include effective enforcement. To study this puzzle, we propose a positive theory of IEAs in which the political incumbents negotiate in the shadow of reelections. We show that incumbents are prone to negotiate treaties that are simultaneously overambi...

Kai Nagel,* Dietrich E. Wolf, Peter Wagner, and Patrice Simon Los Alamos National Laboratory, TSA-DO/SA Mail Stop M997, Los Alamos, New Mexico 87545 Theoretische Physik, Gerhard-Mercator-Universität, 47048 Duisburg, Germany Zentrum für Paralleles Rechnen, Universität zu Köln, 50923 Köln, Germany Deutsches Zentrum für Luftund Raumfahrt, Linder Höhe, 51170 Köln, Germany ~Received 18 December 1997!

Received 04 Oct., 2013 Accepted 10 Jan., 2014 (006206) 1 Department of Chemistry, State University of Maringá – UEM, Maringá, PR, Brazil, e-mail: [email protected] 2 Universidade Tecnológica Federal do Paraná – UTFPR, Campus Londrina, Tecnologia de Alimentos, Londrina, PR, Brazil 3 Federal University of Latin American Integration – UNILA, Foz do Iguaçú, PR, Brazil *Corresponding author Evalu...

Guilherme Bicalho Saturnino, ∗ Caio Padoan de Sá Godinho, † Denise Fagundes-Lima, ‡ Alcides Castro e Silva, § and Gerald Weber ¶ Departamento de F́ısica, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil Departamento de Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil Departamento de F́ısica, Universidade Federal de de Ouro Preto, Ouro Preto, MG, Brazil

Clare Tanton,1 Laith J. Abu-Raddad,2,3 and Helen A. Weiss4 1Research Department of Infection and Population Health, Centre for Sexual Health and HIV Research, University College London, United Kingdom; 2Infectious Disease Epidemiology Group, Weill Cornell Medical College–Qatar, Cornell University, Qatar Foundation, Doha; 3Department of Public Health, Weill Cornell Medical College, Cornell Unive...

We report on the metagenome of a deep subsurface aquifer in the Tomsk region of Russia, sampled via an oil exploration borehole drilled to a depth of 2.8 km. Methanogenic archaea were present in the water along with members of various bacterial phyla, including Firmicutes, Chloroflexi, Bacteroidetes, Ignavibacteriae, and uncultured candidate divisions.

Iron (Fe) and aluminum (Al) hydroxides are highly reactive components in environmental processes, such as contaminant fate and transport. Phosphorus (P) sorption by these components can decrease environmental problems associated with excess accumulation of P in soils. The long-term stability of P sorbed by Fe/Al hydroxides is of major concern. Synthetic Fe and Al hydroxides coprecipitated with ...

Correspondence address: Carlos Alberto Cordeiro Abreu Filho. Av. Dr. Enéas de Carvalho Aguiar, 44. 2°andar. Cerqueira César. São Paulo, SP. CEP: 05403-001. Tel: (11) 3069-5014. E-mail: [email protected] Carlos Alberto Cordeiro de ABREU FILHO1, Luiz Augusto Ferreira LISBOA1, Luís Alberto Oliveira DALLAN1, Sérgio Almeida de OLIVEIRA1 Braz J Cardiovasc Surg 2005; 20(2): 167-173 REVIEW ARTICLE

The Atlantic forest is a terrestrial biome that extends along the Brazilian coast and has been subject of intense deforestation for decades. There are presently several efforts to try to preserve the flora and fauna of what remains from this region (e.g., Coco et al. 2014, Maciel-Silva et al. 2014, Missagia et al. 2014), but several questions on how the distinct floristic units of this biome ar...