Results 11 to 20 of about 5,316 (164)
Revista Facultad de Ingeniería Universidad de Antioquia, 2003 Los incineradores de desechos hospitalarios, municipales y hornos crematorios se han identificado como los principales generadores de dioxinas y furanos. Colombia no ha sido ajena a esta problemática.
Beatriz Aristizabal-Zuluaga +2 more
doaj +1 more source
Structural Investigation of Poly(ethylene furanoate) Polymorphs [PDF]
Polymers, 2018 α and β crystalline phases of poly(ethylene furanoate) (PEF) were determined using X-ray powder diffraction by structure resolution in direct space and Rietveld refinement. Moreover, the α’ structure of a PEF sample was refined from data previously reported for PEF fiber.
Lucia Maini +5 more
openaire +3 more sources
Synthesis and Characterization of Bio-Based Polyesters: Poly(2-methyl-1,3-propylene-2,5-furanoate), Poly(isosorbide-2,5-furanoate), Poly(1,4-cyclohexanedimethylene-2,5-furanoate) [PDF]
Materials, 2017 In the present study, three new biobased furanoate polyesters with potential use in food packaging applications, named poly(isosorbide furanoate) (PIsF), poly(methyl-propylene furanoate) (PMePF) and poly(1,4-cyclohexane-dimethylene 2,5-furanoate) (PCHDMF) were synthesized.
Zoi Terzopoulou +6 more
openaire +2 more sources
Synthesis and antitubercular activity evaluation of 4-furano-coumarins and 3-furano-chromones
Synthetic Communications, 2018 The synthesis of novel 4-furano-coumarins and 3-furano-chromones has been achieved using silver-mediated oxidative C–H/C–H functionalization of 4-ethynylcoumarin/3-ethynylchromone with ethyl acetoacetate in 80%–90% and 82%–90% yields, respectively. The structure of the synthesized compounds was established on the basis of their spectral data analysis ...
Singh, Ankita +6 more
openaire +1 more source
Revista de Metalurgia, 2004 En las plantas de sinterización se generan emisiones gaseosas que deben cumiplir normativasambientales que tienden a ser, cada vez, más exigentes. En el proceso se utilizan alrededorde 40 Kg de coque y 1.700 Nm de aire por tonelada de sinter útil.
F. García-Carcedo +9 more
doaj +1 more source
Dioxinas e furanos: origens e riscos Dioxins and furans: origins and risks
Revista de Saúde Pública, 1999 Apresenta-se uma atualização bibliográfica com o objetivo de relatar a origem e os riscos à saúde pública das dioxinas e furanos e possibilitar o conhecimento de algumas áreas de pesquisa sobre esses compostos.
João V de Assunção, Célia R Pesquero
doaj +1 more source
Composição da matéria orgânica em solos de seis zonas pedoclimáticas de Magdalena (Colômbia) [PDF]
, 2016 [ES] Los suelos al noreste del departamento del Magdalena (Colombia) afrontan una creciente degradación, principalmente por las bajas tasas de acumulación de materia orgánica del suelo (MOS) y su reducido período de transformación.
Kaal, Joeri +2 more
core +1 more source
Compuestos orgánicos volátiles presentes en el aroma de 17 frutas exóticas en Colombia: revisión
Revista Colombiana de Investigaciones Agroindustriales, 2023 El aroma es la sensación obtenida con la activación de los receptores olfativos en la nariz humana y animal, ante la presencia de Compuestos Orgánicos Volátiles (COV o en inglés VOC`s) que son liberados por los organismos como producto de procesos ...
Gonzalo Taborda-Ocampo +3 more
doaj +1 more source
Angewandte Chemie, Volume 138, Issue 2, 9 January 2026.By harnessing chalcogen bonding (ChB) catalysis, an exclusive access into a highly stereoselective strain‐release C‐glycosylation pathway was discovered. This was surprisingly not replicable by the conceptually similar halogen bonding (XB) catalysis.
Hao Guo, Charles C. J. Loh
wiley +2 more sources
Revista Brasileira de Ciência do Solo, 2000 Este trabalho objetivou investigar as principais unidades estruturais de ácidos húmicos obtidos do composto de resíduos sólidos urbano (AH-CRSU) e lodo de estação de tratamento de esgoto (AH-LETE) por meio da pirólise acoplada à cromatografia gasosa ...
L. P. Canellas +3 more
doaj +1 more source