Vol. 32 No. 2

Review paper

• Development of tubular coated electrodes for underwater wet welding.

  Alexandre Queiroz Bracarense, Lorenzo Perdomo González, Ezequiel Caires Pereira Pessoa, Rafael Quintana Puchol

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• Interactive optimization tool for the optimum design of helical extension springs.

  Carlos Galeano, Carlos Duque, Andrés Tovar

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• Effect of external donor and prepolymerization on the performance of Ziegler-Natta catalysts in propylene polymerization.

  Francisco Osorio, Juan Fernández, Nicolino Bracho, Tamara Rajmankina

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• Dynamic parameter identification of parallel robots starting from the measurement of joints position and forces.

  Miguel Díaz Rodríguez, Vicente Mata, Nidal Farhat, Sebastián Provenzano

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• Biomass production of microalga Scenedesmus sp. with wastewater from fishery.

  Charity Andrade, Alexandra Vera, Carmen Cárdenas, Ever Morales

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• Water proporcional meters used as a tool for integrated water management.

  Guillermo Andrés Fuentes Barrera, Jhoniers Guerrero Erazo

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• Quantification of sediment transport through direct measurements and the use of empirical models in an experimental catchment in the Andes Mountains, Southern Chile.

  Andrés Iroumé, Paula Uyttendaele

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• Cellulase production by Trichoderma reesei Rut C-30 from different cellulosic substrates.

  Alejandro Colina, Alexis Ferrer, Lauris Urribarrí

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• Robust fault detection in uncertain polytopic linear systems.

  Addison Ríos Bolívar, Wilber Acuña Bravo

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• Efficient evaluation of Top-k Skyline queries.

  Marlene Goncalves, María Esther Vidal

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