Results 61 to 70 of about 679,230 (229)

Determinação de Cd e Pb em urina e sangue por espectrometria de absorção atômica em forno de grafite após extração no ponto nuvem com otimização multivariada: aplicação em trabalhadores de uma fundição [PDF]

open access: yes, 2007
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Química.A extração no ponto de nuvem (CPE) é proposta como um procedimento de pré-concentração para a determinação de ...
Maranhão, Tatiane de Andrade
core  

Study of alcoholic fermentation of an aqueous extract of butiá palm (Butia eriospatha (Martius) Beccari) pulp: Optimization by response surface methodology

open access: yesSemina: Ciências Exatas e Tecnológicas, 2015
The fermentation conditions were established and an incomplete Box-Behnken factorial design was applied. The independent variables used were yeast extract, yeast and NH4H2PO4, and the alcohol yield obtained was optimized.
Caroline de Souza Cardoso   +6 more
doaj   +1 more source

Impact of process parameters and plant polysaccharide hydrolysates in cellulase production by Trichoderma reesei and Neurospora crassa under wheat bran based solid state fermentation

open access: yesBiotechnology Reports, 2020
Lignocellulosic biomass is a promising feedstock for future renewable fuels. It constitutes a substantial renewable substrate for the production of value-added chemicals.
Nitin Verma, Vivek Kumar
doaj   +1 more source

Finite element model updating for the Tsing Ma Bridge tower based on surrogate models

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2022
This paper investigates the efficiency of three surrogate model-based dynamic finite element model updating methods, the response surface, the support vector regression, and the radial basis function neural network, using the engineering background of ...
Xiao-Xiang Cheng   +2 more
doaj   +1 more source

Status and future of recombinant adeno‐associated virus vector manufacturing

open access: yesBiotechnology Progress, EarlyView.
Abstract Sixty years of adeno‐associated virus (AAV) research illustrates a trajectory marked by basic science exploration, iterative innovation, persistent challenges, a number of clinical setbacks, as well as commercial therapeutic triumphs. This continual evolution has led to recombinant AAV (rAAV) becoming a cornerstone of modern gene therapy ...
Frank Agbogbo, David Dismuke
wiley   +1 more source

Box-Behnken design (BBD) matrix of variables (coded and actual levels) for T-E5 population optimization.

open access: yes, 2016
Box-Behnken design (BBD) matrix of variables (coded and actual levels) for T-E5 population optimization.
Wei Ran (423943)   +6 more
core   +1 more source

Combined beef thawing using response surface methodology

open access: yesCzech Journal of Food Sciences, 2016
Based on four thawing methods (still air, still water, ultrasonic wave, and microwave) and single-factor tests, we established a four-factor three-level response surface methodology for a regression model (four factors: pH, drip loss rate, cooking loss ...
Jiahui JIN   +9 more
doaj   +1 more source

Optimization of the Poly(glycerol citraconate) Synthesis Using the Box–Behnken Design

open access: yesACS Omega, 2023
This work aimed to obtain poly(glycerol citraconate) (PGCitrn) for biomedical applications, analyze the obtained polyester by spectroscopic methods, and optimize its preparation. Polycondensation reactions of glycerol and citraconic anhydride were carried out. It was provided that the results in the reaction are oligomers of poly(glycerol citraconate).
Krzysztof Kolankowski   +3 more
openaire   +2 more sources

Antisolvent crystallization of lithium hydroxide monohydrate: Significant factors and kinetics analysis

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract Crystallization is the final stage in lithium hydroxide monohydrate (LiOH · H2O) production, and antisolvent crystallization offers a lower‐energy route compared with evaporative methods. In this study, we investigated bench‐scale ethanol‐based antisolvent crystallization of LiOH · H2O, and identified the significant impact parameter via a ...
Chentao He, Liuyin Xia
wiley   +1 more source

Biodiesel production from Terminalia bellerica using eggshell-based green catalyst: An optimization study with response surface methodology

open access: yesEnergy Reports, 2019
The main aim of this study was to find the possibility of biodiesel production from Terminalia bellerica and evaluation of optimal input reaction parameters (molar ratio, reaction temperature and catalyst amount) for maximizing the methyl ester yield ...
Akshey Marwaha   +4 more
doaj   +1 more source

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