Book reviews

Adlem, WLJ; Ferreira, L.J.; Stabler, A.W.; Smit, Dirk van Zyl; Merwe, Marlene Van Der; Fourie, Deon; Kruger, H.B.; Richter, B.; Cilliers, Jakkie; Ferreira, Louis M.; VENTER, A.J.

doi:10.1080/02589348108704790

Cited by 17 publications

(17 citation statements)

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“…36 Em termos de biopolímeros pode se destacar: celulose, hemiceluloses, quitina, inulina, amido e lignina, que variam consideravelmente suas massas moleculares (Figura 8). 37 Alguns carboidratos existem praticamente puros, como o amido e a celulose, sendo que este último é encontrado no algodão, na madeira e no papel.…”

Section: Figura 7 Exemplos De Inibidores De Incrustação Da Família Dunclassified

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Mineral scale deposition in surfaces: Problems and opportunities in the oil industry

Reis¹,

Silva²,

Romeiro³

et al. 2011

Revista Virtual De Química

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The deposition or mineral scaling on surfaces is caused by the accumulation of inorganic salts. When it occurs in oil and gas production equipment, it causes major operational problems and severe damage to the pipes. Besides oil wells at sea, this phenomenon also occurs on the surface of membranes used in filtration, treatment and sulphate removal of sea water. Its origins lie in the incompatibility between the chemical composition of the formation and injection water or in the thermodynamic changes of system. These of the disadvantage can be prevented by the use of chemicals that act as scale inhibitors. This article discusses the origin of scale and its implications, and addresses the chemical classes, natural and synthetic, which are used as anti-fouling, as well as promising substances for this purpose.

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Section: Figura 7 Exemplos De Inibidores De Incrustação Da Família Dunclassified

“…Eles representam as biomoléculas mais abundantes na Terra. 37 Esta fonte primária é biossintetizada da fotossíntese. Anualmente são transformados mais de 100 bilhões de m 3 de CO 2 e H 2 O em celulose e em outros produtos de plantas, 38,39 representando 75 % da biomassa da Terra (Figura 9).…”

Section: Figura 7 Exemplos De Inibidores De Incrustação Da Família Dunclassified

Mineral scale deposition in surfaces: Problems and opportunities in the oil industry

Reis¹,

Silva²,

Romeiro³

et al. 2011

Revista Virtual De Química

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“…[1] gave three dimensional exact solution for the vibration of FGM rectangular plates; Ferreira A.J. et al [2] received natural frequencies of FGM plates by meshless method. Natural frequencies and buckling stresses of FGM plates and shallow shells were analyzed by Hiroyuki Matsunaga [3,4] using 2-D higher-order deformation theory.…”

Section: Introductionmentioning

confidence: 99%

Non-linear vibration of functionally graded shallow spherical shells

Bich

Hoa²

2010

Vietnam J. Mech.

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Abstract. The present paper deals with the non-linear vibration of functionally graded shallow spherical shells. The properties of shell material are graded in the thickness direction according to the power law distribution in terms of volume fractions of the material constituents. In the derived governing equations geometric non-linearity in all strain-displacement relations of the shell is considered. From the deformation compatibility equation and the motion equation a system of partial differential equations for stress function and deflection of shell is obtained. The Galerkin method and RungeKutta method are used for dynamical analysis of shells to give expressions of natural frequencies and non-linear dynamic responses. Numerical results show the essential influence of characteristics of functionally graded materials and dimension ratios on the dynamical behaviors of shells.

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“…São Paulo: Contexto, 2013, p.25-27.). católica promoveu total transformação na vida das crianças indígenas, sendo que muitas delas aprenderam ofícios e, depois de casadas, ganhavam suas vidas ao modo dos cristãos 5 , por assim dizer, observando os padrões europeus do "homem civilizado": dóceis, obedientes e trabalhadores.…”

Section: O Trabalho Infantil E a Escravidãounclassified

Trabalho infantil nas ruas, pobreza e discriminação: crianças invisíveis nos faróis da cidade de São Paulo

Santos¹,

Oliva²

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Book reviews

Cited by 17 publications

References 0 publications

Mineral scale deposition in surfaces: Problems and opportunities in the oil industry

Mineral scale deposition in surfaces: Problems and opportunities in the oil industry

Non-linear vibration of functionally graded shallow spherical shells

Trabalho infantil nas ruas, pobreza e discriminação: crianças invisíveis nos faróis da cidade de São Paulo

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