Vol. 22 No. 2

Review paper

• Thermal evaluation and biological control of cooling towers

  Hernán Trujillo, Javier Colina, Jorge Sánchez

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• Catalysis studies of Ru3(CO)12 substituted with PPh2CH2CH2 CH2PPh2

  Bernardo Fontal, Ricardo Hernández, Trino Suárez, Marisela Reyes, Fernando Bellandi

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• Study of the heterogenous crystallization of polypropylene with various coupling agents

  Gladys Ronca, Leni Márquez, Carmen Albano

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• Water wave resonance in the new basin in Los Monjes del Sur, Venezuela

  Pedro Solana, Henry Flores, Hugo Contramaestre

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• Hydraulic parameters analysis in facultative ponds

  Gerardo Aldana, Nibis Bracho, Jesús Esteves

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• Influence of "El Niño" over the pluviometric regime in the Lake of Maracaibo basin

  Susana de Bautista, José Morales, Euler Romero

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• Influence of conversion system on the exhaust gases emissions from vehicles fueled with gasoline or CNG

  Analí Machado, Neyma García, Józef Przybylski, Vidal Montiel

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• Differentiable manifold with a [F1,F2] (5,1) -structure

  Adnan Al Aquel

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