2005
DOI: 10.1590/s0100-40422005000400026
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Influência do material e volume do porta-amostra na determinação termogravimétrica do teor de cinzas em mel

Abstract: . Prof. Lineu Prestes, 580, 05508-900 São Paulo -SP Recebido em 23/4/04; aceito em 24/11/04; publicado na web em 13/4/05 INFLUENCE OF MATERIAL AND VOLUME OF THE SAMPLE HOLDER ON THE THERMOGRAVIMETRIC DETERMINATION OF ASH CONTENTS IN HONEY. The results suggest that the two variables studied are significant and that they may be independently optimized. The material of the sample holder interferes with the incineration process only due to the amount of heat transfered. The sample holder volume aids diffusion of t… Show more

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Cited by 3 publications
(5 citation statements)
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“…4a shows that changes in T S generated almost parallel responses when experiments were conducted with f NH3 at 180 and 250 sccm and T NH 4 Cl at 300 1C, suggesting slight interdependence of T S from f NH3 [16]. However, experiments conducted with T NH 4 Cl at 350 1C showed an intersection of responses (Fig.…”
Section: Variablementioning
confidence: 84%
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“…4a shows that changes in T S generated almost parallel responses when experiments were conducted with f NH3 at 180 and 250 sccm and T NH 4 Cl at 300 1C, suggesting slight interdependence of T S from f NH3 [16]. However, experiments conducted with T NH 4 Cl at 350 1C showed an intersection of responses (Fig.…”
Section: Variablementioning
confidence: 84%
“…The factorial design included three variables (n) with two levels of values (N) resulting in N n ¼8 experiments [15,16] numbered in Table 2. The set of experiments was first planned to detect the conditions to obtain GaN wires and then observe the morphological changes influenced by the temperature of the substrate (T S ), NH 3 flow (f NH 3 ) and temperature applied to the NH 4 Cl salt (T NH 4 Cl ) in the CVD system.…”
Section: Morphology Analysis Through Sem Imagesmentioning
confidence: 99%
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“…Planejamento fatorial é empregado para se obter as melhores condições operacionais de um sistema sob estudo, realizando-se um número menor de experimentos quando comparado com o processo univariado de otimização do processo [43][44][45][46][47][48][49][50][51][52][53] . O planejamento fatorial determina que fatores têm efeitos relevantes na resposta e, também, como o efeito de um fator varia com os níveis dos outros fatores.…”
Section: Planejamento Fatorial Completo Com Ponto Centralunclassified
“…Essas interações são a principal componente de muitos processos de otimização. Sem o uso de planejamentos fatoriais de experimentos, importantes interações de fatores não são detectadas e a otimização máxima do sistema pode levar mais tempo para ser alcançada [43][44][45][46][47][48][49][50][51][52][53] .…”
Section: Planejamento Fatorial Completo Com Ponto Centralunclassified