Results 31 to 40 of about 20,864 (159)
Revista de Investigación Agraria y Ambiental, 2013 El mucílago y la pulpa de café, son subproductos semilíquidos involucrados en la generación de aguas residuales con alta concentración de materia orgánica y diversas especies de microorganismos, afectando negativamente la eficiencia de los tratamientos ...
Luis Felipe Orozco +2 more
doaj +1 more source
, 2020 Journal of Nanomaterials, Volume 2020, Issue 1, 2020.
B. Noriega-Luna +8 more
wiley +1 more source
La moderna alquimia: la industria química
Revista Facultad de Ingeniería Universidad de Antioquia, 2002 Se hace un breve resumen de la evolución de la química desde la más remota antigüedad, pasando por la alquimia, la iatroquímica, la electroquímica, la teoría atómica y los descubrimientos de los siglos XVII, XVIII, XIX y XX, que desembocaron en la ...
Asdrúbal Valencia-Giraldo
doaj +1 more source
Electrochemical Biosensor for Sensitive Quantification of Glyphosate in Maize Kernels
Electroanalysis, Volume 31, Issue 5, Page 927-935, May 2019., 2019 Abstract A graphite‐epoxy electrode (GE) modified with multiwalled carbon nanotubes (MWCNTs) and horseradish peroxidase (GE/MWCNTs‐HRP) was used to build a glyphosate biosensor whose performance in aqueous solutions depends on the enzyme activity. For the biosensor preparation, MWCNTs were deposited onto the GE surface by electrophoresis using an ...
Selene L. Cahuantzi‐Muñoz +6 more
wiley +1 more source
Cuantificación voltamétrica de carbofurano en papa (Solanum tuberosum L., Solanaceae)
Ciencia y Tecnología Agropecuaria, 2017 El exceso en la aplicación de plaguicidas puede generar acumulaciones en los tubérculos de papa que sobrepasen el límite máximo residual (LMR) presentado por el Codex Alimentarius, lo cual representa riesgos para la salud de los consumidores.
Adriana Elizabeth Lara Sandoval +1 more
doaj +1 more source
Composite Materials Based on Henequen Fiber as a Thermal Barrier in the Automotive Sector
Advances in Materials Science and Engineering, Volume 2019, Issue 1, 2019., 2019 Currently, the automotive industry has made great advances in the incorporation of materials such as carbon fiber in high‐performance cars. One of the main problems of these vehicles is warming, which is generated inside due to the heat transfer produced by solar radiation falling on the car, mainly on the roof.
J. M. Olivares-Ramírez +10 more
wiley +1 more source
Advances in Materials Science and Engineering, Volume 2018, Issue 1, 2018., 2018 Fuel consumption has been increasing in recent years, especially that of diesel and jet fuel. For this reason, the necessity to build new plants to reduce their sulfur content has arisen. Sometimes, just revamping existing plants is feasible, but determining which pieces of equipment are in the appropriate condition to be reused is also necessary.
J. C. Velázquez +8 more
wiley +1 more source
Construcción de los modelos sobre la electroquímica y su enseñanza [PDF]
, 2013 Esta investigación presenta los principales resultados referentes a la aplicación de una propuesta didáctica acerca de Electroquímica, la investigación se sustenta en la necesidad de construir y transformar el conocimiento de forma científica, haciendo ...
Benavides, J. +3 more
core +1 more source
Modified Electrochemical Sensors for the Detection of Selected Food Azo Dyes: A Review
ChemElectroChem, Volume 11, Issue 4, February 16, 2024.A broad overview of carbon‐based composite electrochemical sensors with metal oxides, polymers, metal complexes and metal‐organic frameworks (MOFs), polysaccharides, ionic liquids, and metal nanoparticles, exploiting the conductivity, chemical stability, porosity, and functional groups present in these structures to provide enhanced current signals ...
Andy A. Cardenas‐Riojas +7 more
wiley +1 more source
Journal of Lipids, Volume 2018, Issue 1, 2018., 2018 Oils from yeasts have emerged as a suitable alternative raw material to produce biodiesel, due to their similar composition to common raw materials such as vegetable oils. Additionally, they have the advantage of not competing with human or animal feed, and, furthermore, they do not compete for arable land. In this work, a carbon and energy balance was
Xochitl Niehus +4 more
wiley +1 more source