Results 21 to 30 of about 31,015 (146)
Revista UniVap, 2016 Neste trabalho será apresentada a caracterização microestrutural do aço inoxidável 17-4 PH martensítico destinado à indústria petroquímica. Este foi endurecido por precipitação, via tratamento térmico de solubilização.
Ane Caroline Celestino Silva +4 more
doaj +1 more source
A Fuzzy Behavioral Model for analyzing over-reaction and under-reaction in the Brazilian stock market [PDF]
, 2008 Neste artigo, são apresentados testes empíricos para a investigação de ocorrência de fenômenos de sobre-reação e sub-reação no mercado de ações brasileiro.
AGUIAR, Renato Aparecido +2 more
core +1 more source
Chemical Engineering Journal Advances, 2023 Microplastics, which are small plastic particles, have become a growing environmental concern due to their prevalence in aquatic and terrestrial environments.
Fernanda Miranda Zoppas +5 more
doaj +1 more source
Mathematical Modelling of Acetaminophen Release in HPC/PAAm Hydrogel: Synthesis and Application
International Journal of Polymer Science, Volume 2019, Issue 1, 2019., 2019 Hydrogels are commonly used as Drug Delivery Systems (DDS) as patches due to its ability to store drug molecules within their structures. The release can be activated under certain stimuli, such as temperature and pH. In this paper, the mathematical modelling of acetaminophen release in hydroxypropyl cellulose with polyacrylamide (HPC/PAAm) is reported.
Abigail M. Díaz-Guerrero +6 more
wiley +1 more source
International Journal of Chemical Engineering, Volume 2018, Issue 1, 2018., 2018 New catalysts of Pt, PtNi, PtCo, and NiCo supported on Al2O3 were developed for producing hydrogen by aqueous phase reforming (APR) of oxygenated hydrocarbons. The urea matrix combustion technique was used for loading the metal on the support in order to improve several aspects: increase both the metal‐support interaction and the metal dispersion and ...
Liza A. Dosso +3 more
wiley +1 more source
Un estudio comparado sobre la petroquímica básica en México y Argentina entre 1950 y 1990
História Econômica & História de Empresas, 2019 Este artículo realiza un estudio comparativo acerca de la evolución de la producción petroquímica en México y Argentina en las décadas de consolidación, auge y abandono de la industrialización sustitutiva de importaciones.
Juan Odisio
doaj +1 more source
Boletín de Ciencias de la Tierra, 2007 Las dunitas y rocas metabásicas que conforman la Ofiolita de Aburrá se generaron durante el Triásico tardío en un ambiente general de suprazona de subducción que probablemente incluía un arco de islas incipiente y una cuenca retroarco, sin descartarse ...
JORGE JULIÁN RESTREPO A.
doaj +2 more sources
Energy Conversion and Management: X, 2022 In this work the acid-catalysed reactions involved in the one-pot production of pentyl valerate (PV) from γ-valerolactone (GVL) and pentanol in liquid phase at 523 K, 10 bar of N2 over acidic catalysts was studied.
Karla G. Martínez Figueredo +2 more
doaj +1 more source
Study of the dispersion of Cloisite 10A in recycled polyethylene terephtalate by extrusion
Dyna, 2017 This research focuses on clay dispersion of commercial Cloisite 10A in recycled PET (RPET) to improve the properties of recycled polymer lost in the reprocessing of materials, specifically during extrusion.
Ernestina Elizabeth Banda-Cruz +2 more
doaj +1 more source
Microplastics, 2023 Microplastic pollution has become a global environmental concern with detrimental effects on ecosystems and human health. Effective removal of microplastics from water sources is crucial to mitigate their impacts. Advanced oxidative processes (AOPs) have
Nicolás Alejandro Sacco +5 more
doaj +1 more source