Results 131 to 140 of about 102,427 (244)

Modelling of continuous low‐temperature emulsion co‐polymerization in 3D‐printed reactor

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
A kinetic model for the emulsion copolymerization of butyl acrylate/styrene at low temperatures is proposed and validated against experiments with a redox initiator system. The model was successfully transferred to a 3D‐printed tubular reactor and conversions of more than 80% and small particles sizes below 40 nm were observed.
Ferel Issa   +2 more
wiley   +1 more source

Álgebra no ensino básico [PDF]

open access: yes, 2009
O presente livro constitui um material de apoio ao trabalho dos professores do ensino básico no âmbito da Álgebra, abordando os temas Álgebra e pensamento algébrico, orientações curriculares para o ensino da álgebra, relações, sequências e regularidades,
Branco, Neusa   +2 more
core  

Optimal model‐based design of experiments for parameter precision: Supercritical extraction case

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract This study investigates the process of chamomile oil extraction from flowers. A parameter‐distributed model consisting of a set of partial differential equations is used to describe the governing mass transfer phenomena in a cylindrical packed bed with solid chamomile particles under supercritical conditions using carbon dioxide as a solvent ...
Oliwer Sliczniuk, Pekka Oinas
wiley   +1 more source

Álgebra y genética [PDF]

open access: yes, 2006
El objetivo de este documento es presentar una introducción a las relaciones que existen entre el Álgebra y la Genética, con algunos ejemplos de aplicaciones en ambos campos.
Moreno, Stefany, Pérez, Jesús Hernando
core  

A hidden Markov model and reinforcement learning‐based strategy for fault‐tolerant control

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract This study introduces a data‐driven control strategy integrating hidden Markov models (HMM) and reinforcement learning (RL) to achieve resilient, fault‐tolerant operation against persistent disturbances in nonlinear chemical processes. Called hidden Markov model and reinforcement learning (HMMRL), this strategy is evaluated in two case studies
Tamera Leitao   +2 more
wiley   +1 more source

As perguntas para desenvolver estratégias: Álgebra e Resolução de Problemas no Ensino Médio

open access: yesRevista Baiana de Educação Matemática, 2020
Joseane Mirtis de Queiroz Pinheiro   +1 more
doaj   +1 more source

La teledetección como instrumento de analisis de datos espaciales aplicados al estudio de incendios en el territorio italiano [PDF]

open access: yes, 2012
The relation between the vegetation’s phenology and summer wildfires in Italy was studied using remote sensing and GIS techniques, in the course of the year 2008.
Aceñolaza, Pablo Gilberto   +3 more
core  

A‐optimal model‐based design of experiments for processes with uncertain inputs

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract Model‐based design of experiments (MBDoE) techniques are tools for selecting experimental conditions that enable accurate parameter estimation for mechanistic models. Most MBDoE approaches assume that the selected experimental conditions will be implemented perfectly, without uncertainties in the independent variables.
Bright Ofori   +3 more
wiley   +1 more source

El álgebra geométrica como recurso didáctico en la ensenanza-aprendizaje del álgebra escolar [PDF]

open access: yes, 2008
La presente propuesta se enmarca en el proyecto de investigación que se está realizando como trabajo de grado, ésta se fundamenta en las experiencias de aula llevadas a cabo en el transcurso del proceso de formación de Licenciatura en Educación Básica ...
Barrios, Ninfa, Mejía, Gladys
core  

Asymptotic properties of cross‐classified sampling designs

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract We investigate the family of cross‐classified sampling designs across an arbitrary number of dimensions. We introduce a variance decomposition that enables the derivation of general asymptotic properties for these designs and the development of straightforward and asymptotically unbiased variance estimators.
Jean Rubin, Guillaume Chauvet
wiley   +1 more source

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