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  1. No Access

    Chapter and Conference Paper

    Energy Recovery and Greenhouse Gas Emission Reduction Potential of Bio-Waste in South American Countries

    The present research work aimed to evaluate the effect of different treatments composed of solid sediments, water, and biomass on the production of methane (CH4) gas by anaerobic biodigestion. Concerning the meth...

    H. Romero, M. Farias, G. Armijos, W. Torres… in Sustainable Development with Renewable Ene… (2024)

  2. Article

    Hardness Analysis of X-Ray Images for Neural-Network Tuberculosis Diagnosis

    We consider the automatic hardness determination of a chest X-ray image and the effect of pre-filtering of the training and validation samples on the performance of the classification algorithm of tuberculosis...

    Ya. A. Pchelintsev, A. V. Khvostikov… in Computational Mathematics and Modeling (2022)

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  3. No Access

    Article

    Catalytic activity in the hydrocarbon conversion of systems containing platinum, nickel, iron, and zinc nanoparticles (communication 2)

    The catalytic activity of metal-containing zeolites modified by nanosized Pt, Ni, Fe, and Zn powders was studied in the process of upgrading the petroleum straight-run gasoline fractions. It was found that the...

    L. M. Velichkina, A. N. Pestryakov, A. V. Vosmerikov… in Petroleum Chemistry (2008)

  4. No Access

    Article

    Catalytic activity in hydrocarbon conversion of pentasil containing platinum, nickel, iron, or zinc nanoparticles

    Catalyst samples containing nanosized Pt, Ni, Fe, or Zn powder were prepared on the basis of high-silica zeolite ZSM-5 by mechanical mixing. The structure and state of active centers of zeolite catalysts (fres...

    L. M. Velichkina, A. N. Pestryakov, A. V. Vosmerikov… in Petroleum Chemistry (2008)

  5. Article

    Fortification of Sugar with Iron. Determination of the Dose Impact

    R Cardoso, E Giorgini, JAP Giorgini, AMA Ferreira, M Farias, J Valle… in Pediatric Research (1998)

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  6. No Access

    Article

    Influence of the substrate temperature on the structure and surface roughness of Cd0.18Sb0.64Te0.18 films

    Using a radiofrequency sputtering deposition technique, ternary Cd0.18Sb0.64Te0.18 thin films have been grown on glass substrates at several substrate temperatures (50–250°C). The samples have an Sb content of...

    F. J Espinoza-Beltran, R Ramirez-Bon, A Picos-Vega… in Journal of Materials Science (1997)

  7. No Access

    Article

    Plasma enhanced chemical vapor deposition of SiO2 films at low temperatures using SiCl4 and O2

    Silicon dioxide films have been deposited by Plasma-Enhanced Chemical Vapor Deposition (PECVD) technique using SiCl4 and O2 as reactive materials. Infra-red transmittance, Auger electron spectroscopy analysis, el...

    A. Ortiz, S. Lopez, C. Falcony, M. Farias… in Journal of Electronic Materials (1990)