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1.
Food Chem ; 304: 125434, 2020 Jan 30.
Artigo em Inglês | MEDLINE | ID: mdl-31491711

RESUMO

The effect of amylose content in the in vitro digestibility of non-modified and OSA-modified corn starch was studied. Corn starches with different amylose content (waxy, normal and Hylon VII) were treated with 3% OSA solution. In vitro digestibility tests showed that OSA treatment reduced the fraction of fastly digestible starch, an effect that was more pronounced for cooked starch. The amylose content was negatively linked to the decrease of in vitro digestion. HPSEC analysis was conducted to gain insights on the effect of OSA-treatment on in vitro digestibility. The results showed an increase of the molecular weight of starch chains. Besides, the molecular weight increase was similar for amylose and amylopectin fractions. This suggests that OSA could be acting as a cross-linking agent between starch chains, reducing the susceptibility to amylolysis. Overall, OSA treatment induced the formation of more complex starch chains, offering more resistance for amylolytic reactions.

2.
J Sci Food Agric ; 2019 Nov 06.
Artigo em Inglês | MEDLINE | ID: mdl-31696519

RESUMO

BACKGOUND: Maize tortilla staling is a major drawback that affects its commercialization and consumption, so novel methods for retarding staling are continuously explored. In this work the effect of adding a canola oil/candelilla wax oleogel (CWO; 0. 2, 4 and 6 g.100 g-1 ) to a basic masa formulation (water, 60 g.100 g-1 ; nixtamalized maize flour, 40 g.100 g-1 ) on the texture, staling and in vitro starch digestibility of maize tortillas made in a hot plate (200 °C) was evaluated. RESULTS: Textural analysis showed that CWO reduced hardness and increased tensile strength of tortillas. FTIR analysis indicated that the retrogradation of starch chains, quantified in terms of the intensity ratio 1047/1022, was reduced by oleogel incorporation. In vitro starch digestibility tests showed that tortillas containing CWO had lower readily digestible and slowly digestible (starch fractions in comparison to the control tortilla without oleogel. CONCLUSION: The formation of amylose-lipid inclusion complexes and the formation of an oily physical barrier around starch granules were postulated as mechanisms underlying the reduced starch digestibility. This article is protected by copyright. All rights reserved.

3.
Food Chem ; 298: 125085, 2019 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-31260951

RESUMO

Plantain is a climacteric fruit having economic relevance in several tropical regions. Unripe plantain is an alternative source of indigestible carbohydrates (dietary fibre) and undigestible starch fraction. Unripe plantain flour was explored in this work as an alternative ingredient (whole and pulp) in spaghetti formulations. Chemical composition, cooking quality, texture analysis, and microstructure of spaghetti formulations were analyzed. The microstructure results showed that the presence of fiber in the food matrix helped the reduction of the starch granule swelling in the cooking process. Spaghetti made with whole plantain flour exhibited lower rapidly starch fraction, with increased resistant starch fractions. Overall, the whole unripe plantain flour exhibited good potential for gluten-free spaghetti having highest content of fiber and lower starch digestion rates.


Assuntos
Farinha , Plantago/química , Culinária , Dieta Livre de Glúten , Fibras na Dieta/análise , Digestão , Farinha/análise , Análise de Alimentos , Amido/química
4.
Int J Biol Macromol ; 132: 119-125, 2019 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-30926504

RESUMO

The development of starch granules of a banana cultivar (morado variety - Musa AAA subgroup Red dacca) from filamentous shape to semi-spherical and finally to oval shape, was studied. The purity of the extracted starch changed from 83.5% (6 weeks) to 95.4% (16 weeks). Impurities were ascribed to cellulosic and latex fractions responsible for the integrity of the pristine fruit. The amylose content was stabilized at about 29.6% after the 12th week. The thermal analysis showed that the gelatinization enthalpy increased from 5.0 to 11.2 J/g from the 6th to the 12th week, indicating an increased degree of internal molecular organization. The analysis of chain-length distribution and gel permeation chromatography, showing that the content of long chains (B1, B2, and B3+) increased with the development of the starch granule. Also, XRD analysis indicated that C- type X-ray diffraction pattern from early to later phases of development, although the relative crystallinity content increased from 19.3 to 23.5% after 16 weeks of development. FTIR revealed the formation of more ordered structures with the development time. In vitro digestion tests showed that the resistant starch fraction increased from 37.5% for week 6 to 55.5% for week 16.


Assuntos
Digestão , Evolução Molecular , Frutas/crescimento & desenvolvimento , Musa/química , Musa/crescimento & desenvolvimento , Amido/química , Amilopectina/análise , Amilose/análise , Solubilidade , Amido/metabolismo , Temperatura Ambiente
5.
Food Res Int ; 119: 829-838, 2019 May.
Artigo em Inglês | MEDLINE | ID: mdl-30884722

RESUMO

Recently the structuring of liquid oils with low molecular weight organogelators has received much attention. Food products devoid of trans fats, with tailored rheological and textural properties can be designed for desired applications by properly selecting the organogelator and cooling rate used in their formation. Nevertheless, studies regarding these points are still scarce. In this work the effect of two different food-grade gelators (glyceryl monostearate, GM and sorbitan monostearate, SM) and different cooling rates (1, 3 and 9 °C/min) on the microstructural, viscoelastic and texture properties of chia seed oleogels (GMO and SMO, respectively) were evaluated. Gelator and chia seed oil (ChSO) were mixed in 1:10 mass ratio. SMO formed crystalline needle-like structures, with faster cooling rates producing smaller crystals (higher crystallinity index) and a more compact network. GMO showed an opposite crystallinity index dependence with cooling rate than SMO. GMO hardness higher than that of SMO, and increased while that of SMO decreased as cooling rate was faster. Both GMO and SMO showed a thixotropic dependence of the storage (G') and loss (G") moduli with forward-backward temperature ramp (5-80-5 °C). Both moduli values were higher for GMO than for SMO independently of cooling rate used. A thixotropic index was obtained, which reflected that GMO had a more thermo-reversible structure than SMO. The results of this study indicate that the formation mechanism of chia seed oleogels was affected by the cooling rate and the chemical nature of the gelator, and elicited completely different microstructural and mechanical responses.

6.
Ultrason Sonochem ; 44: 97-105, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29680632

RESUMO

Response surface methodology was used for establishing the amplitude (72.67%) and time (17.29 min) high-intensity ultrasound (HIUS) conditions leading to an optimized faba bean protein isolate (OFPI) with lower interfacial tension, zeta potential and viscosity, and higher solubility than native faba bean protein isolate (NFPI). OFPI showed significantly higher adsorption dynamics at the air-water interface, and produced foam with significant smaller bubble diameter, higher overrun, stability and yield stress, and lower liquid drainage than NFPI. Fourier Transform Spectroscopy (FT-IR) revealed that the secondary structure of OFPI deferred from NFPI in terms of increases in ß conformations (6.61% ß-sheet, 19.6% ß-turn, 0.8% anti-parallel ß-sheet) and decreases in inter-molecular aggregates (43.54%). Multienzyme study pinpointed that the structural changes could have induced a decrease on the relative protein digestibility of OFPI respect that of NFPI. The results of this work demonstrate that HIUS technology improves the surface and foaming properties of faba bean protein isolate, which may favour the revalorisation of this crop.


Assuntos
Produtos Agrícolas/metabolismo , Proteínas de Plantas/metabolismo , Sonicação , Vicia faba/metabolismo , Adsorção , Tamanho da Partícula , Proteínas de Plantas/química , Conformação Proteica , Solubilidade , Espectroscopia de Infravermelho com Transformada de Fourier , Tensão Superficial
7.
J Sci Food Agric ; 98(12): 4403-4410, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-29435988

RESUMO

BACKGROUND: Staling of maize tortillas is a major drawback affecting their manufacture, commercialization and consumption. The development of methods that may help retard staling of maize tortillas is an ongoing research topic. In this work, a novel, simple, economic and effective method is proposed, based on adding completely gelatinized nixtamalized maize flour (GMF) dispersion to the basic masa formulation recipe (water, 600 g kg-1 ; nixtamalized maize flour, 400 g kg-1 ) in substitution of 50, 100 and 150 g kg-1 of water. RESULTS: Masa added with GMF showed increased water retention capacity, reduced freezable water content and improved flow and dynamic rheological properties and produced tortillas with decreased firmness. The infrared 1047/1022 cm-1 spectral ratio indicated that a more disordered starch granule arrangement was formed, while enthalpy peaks associated with starch retrogradation decreased. All the above indicators were more pronounced the higher was the GMF content. CONCLUSION: This work showed that GMF can play the role of a self-hydrocolloid anti-staling agent by retarding the retrogradation of maize starch and deterring the loss of water and rheological properties of masa and the increase in undesirable sensory characteristics of tortilla such as increased firmness. © 2018 Society of Chemical Industry.


Assuntos
Pão/análise , Farinha/análise , Manipulação de Alimentos/ética , Manipulação de Alimentos/métodos , Zea mays/química , Humanos , Reologia , Amido/análise , Paladar , Água/análise
8.
Carbohydr Polym ; 124: 17-24, 2015 Jun 25.
Artigo em Inglês | MEDLINE | ID: mdl-25839789

RESUMO

Banana starches from diverse varieties (Macho, Morado, Valery and Enano Gigante) were studied in their physicochemical, structural and digestibility features. X-ray diffraction indicated that the banana starches present a B-type crystallinity pattern, with slight difference in the crystallinity level. Macho and Enano Gigante starches showed the highest pasting temperatures (79 and 78°C, respectively), whilst Valery and Morado varieties presented a slight breakdown and higher setback than the formers. Morado starch presented the highest solubility value and Valery starch the lowest one. The swelling pattern of the banana starches was in agreement with their pasting profile. All banana starches showed a shear-thinning profile. The resistant starch (RS) fraction was the main fraction in the uncooked banana starches. Morado variety showed the highest amount of slowly digestible starch (SDS) and the lowest RS content reported until now in banana starches. Banana starch cooked samples presented an important amount of SDS and RS. Molecular weight and gyration radius of the four banana starches ranged between 2.88-3.14×10(8)g/mol and 286-302nm, respectively. The chain-length distributions of banana amylopectin showed that B1 chains (DP 13-24) is the main fraction, and an important amount of long chains (DP≥37) are present. The information generated from this study can be useful to determine banana varieties for starch isolation with specific functionality.


Assuntos
Musa/química , Amido/química , Peso Molecular , Solubilidade , Difração de Raios X
9.
J Environ Radioact ; 135: 100-7, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24814719

RESUMO

The analysis of the diffusion of radioisotopes in stagnant water in saturated porous media is important to validate the performance of barrier systems used in radioactive repositories. In this work a methodology is developed to determine the radioisotope concentration in a two-reservoir configuration: a saturated porous medium with stagnant water is surrounded by two reservoirs. The concentrations are obtained for all the radioisotopes of the decay chain using the concept of overvalued concentration. A methodology, based on the variable separation method, is proposed for the solution of the transport equation. The novelty of the proposed methodology involves the factorization of the overvalued concentration in two factors: one that describes the diffusion without decay and another one that describes the decay without diffusion. It is possible with the proposed methodology to determine the required time to obtain equal injective and diffusive concentrations in reservoirs. In fact, this time is inversely proportional to the diffusion coefficient. In addition, the proposed methodology allows finding the required time to get a linear and constant space distribution of the concentration in porous mediums. This time is inversely proportional to the diffusion coefficient. In order to validate the proposed methodology, the distributions in the radioisotope concentrations are compared with other experimental and numerical works.


Assuntos
Radioisótopos/análise , Porosidade
10.
J Chem Phys ; 137(17): 174103, 2012 Nov 07.
Artigo em Inglês | MEDLINE | ID: mdl-23145713

RESUMO

This study is devoted to the unbiased motion of a point-like brownian particle in two-dimensional tilted asymmetric channels of varying width formed by straight walls. An effective one-dimensional description in terms of the generalized Fick-Jacobs equation is used to derive formulas that yield the particle's effective diffusion coefficient as a function of the geometric parameters of the channel. To such end, we use the formulas obtained by Bradley [Phys. Rev. E 80, 061142 (2009)] and by Dagdug and Pineda [J. Chem. Phys. 137, 024107 (2012)] to study two-dimensional diffusion in narrow and smoothly asymmetric channels of varying width. Comparison with brownian dynamics simulation results allows us to establish the domain of applicability of both the one-dimensional description and the effective diffusion coefficient formulas.

11.
Rev Electron ; 37(4)abr. 2012. tab
Artigo em Espanhol | CUMED | ID: cum-51026

RESUMO

En el proceso de enseñanza-aprendizaje del idioma inglés con propósitos médicos, en Cuba, en la superación profesional, se ha detectado que aún persisten problemas, relacionados con la formación de la competencia comunicativa de estos profesionales en idioma inglés, que limitan su desempeño profesional. En los cursos académicos 2009-2010 y 2010-2011 se desarrolló una investigación pedagógica en la Filial de Ciencias Médicas del municipio de Puerto Padre, provincia de Las Tunas, como resultado de la cual se diseñó un modelo para la enseñanza postgraduada de idioma inglés con propósitos médicos. Como parte del mismo se elaboró el libro Bedside English para este tipo de enseñanza. Se manejaron la dimensión afectiva, cognitiva y praxiológica para la comunicación, en un entramado de relaciones, que permiten la formación de la competencia profesional médica comunicativa en idioma inglés, en situaciones profesionales médicas. Se corroboraron buenos resultados a través de un pre experimento(AU)


The teaching-learning process of English language with medical purposes in Cuba, concerning professional growth, has presented some problems related to the training of the communicative competence of these professionals in English language which still persist. During the 2009-2010 and 2010-2011 academic courses, a pedagogical research was carried out at Puerto Padre´s Medical sciences school, in the province of Las Tunas- resulting in the designing of a model for post-graduated education in English language with medical purposes. As part of such investigation, a book entitled “Bedside English” was written for this type of teaching. The affective, cognitive and praxeological dimensions for communication were taken into account in a framework of relationships which allow the training of the communicative medical professional competence in English language, in medical professional situations. The pre-experiment showed good results(AU)


Assuntos
Humanos , Educação , Educação de Pós-Graduação , Comunicação
12.
Rev Electron ; 37(3)mar. 2012.
Artigo em Espanhol | CUMED | ID: cum-51018

RESUMO

Se realizó una revisión bibliográfica sobre las teorías del envejecimiento y de los cambios neurobiológicos que ocurren en el paciente geriátrico, para contribuir a elevar el conocimiento sobre este tema entre los profesionales de la atención primaria y secundaria de salud, en aras de mejorar el manejo de este tipo de paciente. Se encontró que en Cuba el porcentaje de envejecimiento poblacional constituye el principal problema demográfico actual. El incremento de las personas de 60 años y más en Cuba es uno de los más rápidos e intensos que haya ocurrido a nivel internacional(AU)


A bibliographical review about aging theories and neurobiological changes in geriatric patients was carried out in order to increase the knowledge on this topic among primary and secondary healthcare professionals, to improve the handling of these patients. It was found that the percentage of aging in the Cuban population is the main demographic problem nowadays. The increase of the number of people of 60 years and over in Cuba is one of the fastest and most intense worldwide(AU)


Assuntos
Humanos , Idoso , Envelhecimento , Idoso
13.
Phys Rev E Stat Nonlin Soft Matter Phys ; 84(3 Pt 1): 031201, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22060354

RESUMO

Several studies have shown that the performance of different chemical processes can be improved by means of periodic operation. An accurate modeling and simulation of these processes requires accounting for the dependence of the system parameters with the operating frequency. This work uses the method of volume averaging to study the behavior of dispersion with frequency (i.e., dynamic dispersion) in homogeneous porous media. In the absence of convection, the dynamic dispersion is reduced to the dynamic diffusivity, showing a decreasing behavior with frequency. In contrast, the dynamic dispersion can be either an increasing or decreasing function of frequency, depending on the particle Péclet number values. At sufficiently high frequency values, the dispersion coefficient approaches the molecular diffusivity. Comparisons with direct numerical simulations for idealized porous medium models evidence the extents and limitations of the upscaling approach.

14.
J Chem Phys ; 134(20): 204709, 2011 May 28.
Artigo em Inglês | MEDLINE | ID: mdl-21639469

RESUMO

Asymmetric diffusion has been observed in different contexts, from transport in stratified and fractured porous media to diffusion of ions and macromolecular solutes through channels in biological membranes. Experimental and numerical observations have shown that diffusion is facilitated in the direction of positive void fraction (i.e., porosity) gradients. This work uses the method of volume averaging in order to obtain effective medium equations for systems with void fraction gradients for passive and diffusive mass transport processes. The effective diffusivity is computed from the solution of an associated closure problem in representative unit cells that allow considering porosity gradients. In this way, the results in this work corroborate previous findings showing that the effective diffusivity exhibits important directional asymmetries for geometries with void fraction gradients. Numerical examples for simple geometries (a section with an obstacle and a channel with varying cross section) show that the diffusion asymmetry depends strongly on the system configuration. The magnitude of this dependence can be quantified from the results in this work.

15.
Rev electrón ; 34(5)oct.-dic. 2009.
Artigo em Espanhol | CUMED | ID: cum-42359

RESUMO

La competencia comunicativa en idioma Inglés de los profesionales médicos cubanos muestra un desbalance en la integración de las cuatro habilidades esenciales del idioma, lo que afecta su desempeño profesional en diversas partes del mundo, donde este idioma constituye la vía para comunicarse. Esta situación ocurre, además, al optar por una categoría docente y/o grado científico, siendo comprobada en reuniones metodológicas, de departamento, colectivos de asignaturas y visitas a clase. Para contribuir a dar solución a la situación problémica planteada, se realizó una revisión bibliográfica sobre las categorías del proceso formativo de postgrado en idioma inglés en profesionales médicos y un análisis de las mismas, basado en la observación participante en este tipo de enseñanza y en los cursos de postgrado en idioma inglés, ofertados en diversas instituciones de la enseñanza médica superior del país(AU)


The Cuban medical professionals communicative competence in the English language shows no balance in the integration of the four essential abilities of the language. It affects their professional performance in many parts of the world where this language is the means to communicate. This situation also occurs when the professionals apply to upgrade their teaching rank and/or scientific degree. That was verified in methodological, departmental, staff meetings and lessons supervision. To contribute to give solution to the problem situation stated, a bibliographic revision about the categories of the postgraduate formative process of the English language in medical professionals was done, as well as an analysis of them based on the participant observation of this type of teaching and of English postgraduate courses offered by different institutions of the Cuban Higher Medical Teaching(AU)


Assuntos
Humanos , Educação de Pós-Graduação
16.
Rev electrón ; 34(4)dic. 2009. Tab
Artigo em Espanhol | CUMED | ID: cum-41911

RESUMO

En la mayoría de los profesionales de las Ciencias Médicas del Municipio Puerto Padre se muestran dificultades en la competencia comunicativa en idioma Inglés, cuando se les realizan exámenes para cambio de categoría docente o para cumplir misiones de colaboración en países de habla inglesa. Para dar solución a esta problemática, se realizó una investigación sobre las necesidades de aprendizaje de los profesionales médicos que acudieron a los cursos de inglés con propósitos médicos durante seis cursos académicos en la Filial de Puerto Padre. Se realizó un estudio de la situación de la enseñanza postgraduada en profesionales médicos en el país y se diseñó una estrategia para estimular la competencia comunicativa de los mencionados profesionales. Se muestran los resultados obtenidos en los cursos académicos 2007 2008 y 2008 2009 con el uso de acciones educativas, como parte de esta estrategia. La tarea comunicativo-interactivo-integradora en el aula y en la sala o consulta del hospital o policlínico constituyó la célula fundamental de cada tema del libro diseñado y usado como medio. Los profesionales demostraron haber elevado su competencia comunicativa en cuatro dimensiones principales: gramatical lingüística, discursiva, sociolingüística y estratégica(AU)


Most of the medical professionals from Puerto Padre Municipality show difficulties in their communicative competence in the English Language when they sit tests to obtain a higher teaching rank or to fulfill missions or collaboration in English Speaking countries. To solve this situation, research was done to find out the learning needs of the professionals who attended the courses of English for Medical Purposes during six academic years in Puerto Padre Medical School. Along with this aim, a study concerning the postgraduate teaching to Medical professionals in Cuba was carried out. Based on the findings, a stategy to enhance the communicative competence of these professionals in the English language was designed. The results obtained in the academic-years 2007 2008 and 2008 2009, with the use of educative actions as part of the strategy carried out are shown. The integrating-interactive communicative task in the classroom and in the wards or consultations either in the hospital or in the policlinic was the cell of each theme of the book designed and used.The medical professionals developed their communicative competence in four principal dimensions: linguistic and grammatical, discourse, sociolinguistic, and strategic(AU)


Assuntos
Humanos , Ensino , Aprendizagem , Competência Profissional
17.
Chaos ; 19(2): 028502, 2009 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-19566277

RESUMO

This paper explores the possibility of applying statistical nonlinear physics methods to elucidate the underlying mechanisms controlling the heart rate. In particular, the presence of delays in RR interval dynamics is studied by using a lagged detrended fluctuation analysis. The results indicate that patients with congestive heart failure (CHF) have a prolonged time delay in the baroreflex response. Some implications of large delays for the functioning of autonomic control in subjects with CHF are discussed.


Assuntos
Frequência Cardíaca/fisiologia , Modelos Cardiovasculares , Sistema Nervoso Autônomo/fisiopatologia , Barorreflexo/fisiologia , Insuficiência Cardíaca/fisiopatologia , Humanos , Dinâmica não Linear
18.
Phys Rev E Stat Nonlin Soft Matter Phys ; 79(5 Pt 2): 057202, 2009 May.
Artigo em Inglês | MEDLINE | ID: mdl-19518601

RESUMO

Here we propose a method, based on detrended fluctuation analysis (DFA), to investigate lagged correlations for nonstationary time series. The aim is to show that the largest correlation can be found at positive lags, reflecting the existence of underlying delays in the evolution of real time sequences. The performance of the lagged DFA method is illustrated by selected real examples.

19.
Ann Biomed Eng ; 33(10): 1449-63, 2005 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-16240092

RESUMO

This article studies the problem of controlling the drug administration during an anesthesia process, where muscle relaxation, analgesia, and hypnosis are regulated by means of monitored administration of specific drugs. On the basis of a seventh-order nonlinear pharmacokinetic-pharmacodynamic representation of the hypnosis process dynamics, a cascade (master/slave) feedback control structure for controlling the bispectral index (BIS) is proposed. The master controller compares the measured BIS with its reference value to provide the expired isoflurane concentration reference to the slave controller. In turn, the slave controller manipulates the anesthetic isoflurane concentration entering the anesthetic system to achieve the reference from the master controller. The advantage of the proposed cascade control structure with respect to its noncascade counterpart is that the former provides operation protection against BIS measurement failures. In fact, under a BIS measurement fault, the master control feedback is broken and the slave controller operates under a safe reference value. Extensive numerical simulations are used to illustrate the functioning of the proposed cascade control structure.


Assuntos
Quimioterapia Assistida por Computador/métodos , Hipnose Anestésica/métodos , Isoflurano/administração & dosagem , Isoflurano/farmacocinética , Pulmão/fisiologia , Mecânica Respiratória/fisiologia , Administração por Inalação , Anestésicos Inalatórios/administração & dosagem , Simulação por Computador , Retroalimentação/fisiologia , Humanos , Pulmão/efeitos dos fármacos , Modelos Biológicos , Monitorização Fisiológica/métodos , Mecânica Respiratória/efeitos dos fármacos
20.
Biotechnol Prog ; 21(5): 1420-8, 2005 Sep-Oct.
Artigo em Inglês | MEDLINE | ID: mdl-16209545

RESUMO

The derivation of an approximate solution method for models of a continuous stirred tank bioreactor where the reaction takes place in pellets suspended in a well-mixed fluid is presented. It is assumed that the reaction follows a Michaelis-Menten-type kinetics. Analytic solution of the differential equations is obtained by expanding the reaction rate expression at pellet surface concentration using Taylor series. The concept of a pellet's dead zone is incorporated; improving the predictions and avoiding negative values of the reagent concentration. The results include the concentration expressions obtained for (a) the steady state, (b) the transient case, imposing the quasi-steady-state assumption for the pellet equation, and (c) the complete solution of the approximate transient problem. The convenience of the approximate method is assessed by comparison of the predictions with the ones obtained from the numerical solution of the original problem. The differences are in general quite acceptable.


Assuntos
Reatores Biológicos , Misturas Complexas/química , Enzimas Imobilizadas/química , Análise de Falha de Equipamento/métodos , Microfluídica/métodos , Modelos Químicos , Dinâmica não Linear , Simulação por Computador , Cinética , Fatores de Tempo
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