Modeling of seepage flow through layered solis

A two-dimensional finite difference model, which solves mixed type of Richards' equation, whose non-linearity is dealt with modified Picard's iteration and strongly implicit procedure to solve the resulting equations, is presented. Modeling of seepage flow through heterogeneous soils, which is common in the field is addressed in the present study. The present model can be applied to both unsaturated and saturated soils and can handle very dry initial condition and steep wetting fronts. The model is validated by comparing experimental results reported in the literature. Newness of this two dimensional model is its application on layered soils with transient seepage face development, which has not been reported in the literature. Application of the two dimensional model for studying unconfined drainage due to sudden drop of water table at seepage face in layered soils is demonstrated. In the present work different sizes of rectangular flow domain with different types of layering are chosen. Sensitivity of seepage height due to problem dimension of layered system is studied. The effect of aspect ratio on seepage face development in case of the flow through layered soil media is demonstrated. The model is also applied to random heterogeneous soils in which the randomness of the model parameters is generated using the turning band technique. The results are discussed in terms of phreatic surface and seepage height development and also flux across the seepage face. Such accurate modeling of seepage face development and quantification of flux moving across the seepage face becomes important while modeling transport problems in variably saturated media.

Computationally efficient yet accurate analysis of composite plate

This article does not have an abstract.

A constitutive model for cavitation and cavity growth in rubber-like materials under arbitrary tri-axial loading

In this paper, we attempted to construct a constitutive model to deal with the phenomenon of cavitation and cavity growth in a rubber-like material subjected to an arbitrary tri-axial loading. To this end, we considered a spherical elementary representative volume in a general Rivlin's incompressible material containing a central spherical cavity. The kinematics proposed by [Hou, H.S., Abeyaratne, R., 1992. Cavitation in elastic and elastic-plastic solids. J. Mech. Phys. Solids 40, 571-722] was adopted in order to construct an approximate but optimal field. In order to establish a suitable constitutive law for this class of materials, we utilized the homogenisation technique that permits us to calculate the average strain energy density of the volume. The cavity growth was considered through a physically realistic failure criterion. Combination of the constitutive law and the failure criterion enables us to describe correctly the global behaviour and the damage evolution of the material under tri-axial loading. It was shown that the present models can efficiently reproduce different stress states, varying from uniaxial to tri-axial tensions, observed in experimentations. Comparison between predicted results and experimental data proves that the proposed model is accurate and physically reasonable. Another advantage is that the proposed model does not need special identification work, the initial Rivlin's law for the corresponding incompressible material is sufficient to form the new law for the compressible material resulted from cavitation procedure. (C) 2007 Elsevier Ltd. All rights reserved.

[Discurso do Deputado Armando Carneiro : Sessão da Câmara dos Deputados de 02 de maio de 1960]

Discurso proferido durante a 1ª Sessão da Câmara dos Deputados na nova capital do país. Discorre sobre o problema da falta d'água no seu apartamento de Brasília e ainda solicita providênciar local para funcionamento da Comissão de Valorização Econômica da Amazônia.

PICES Press, Vol. 10, No. 1, January 2002

Cover [pdf, 0.2 Mb] The state of PICES Science - 2001 [pp. 1-2] [pdf, 0.2 Mb] Reception remarks at PICES X [pp. 3-4] [pdf, 0.3 Mb] The state of the western North Pacific in the first half of 2001 [pp. 5-7] [pdf, 0.8 Mb] The status of the Bering Sea: January - August 2001 [pp. 8-9] [pdf, 0.4 Mb] The state of the eastern Norht Pacific since spring 2001[pp. 10-11] [pdf, 0.3 Mb] 2001 SEEDS experiment in the western Norht Pacific [pp. 12-13] [pdf, 0.5 Mb] Plans for the Canadian SOLAS Iron Enrichment Experiment [pp. 14-15] [pdf,. 0.4 Mb] Photo highlights of the PICES Tenth Annual Meeting [pp. 16-17] [pdf,. 0.3 Mb] NEAR-GOOS 2001 Ocean Environment Forecasting Workshop [pp. 18-19] [pdf, 0.6 Mb] IRI/IPRC Pacific Climate-Fisheries Workshop [pp. 20-21] [pdf, 0.2 Mb] PICES North Pacific Ecosystem Status Report [p. 21] [pdf,. 0.2 Mb] U.S. GLOBEC Northeast Pacific Ocean Program [pp. 22-26] [pdf, 0.5 Mb] New PICES Committee and Program Chairmen biographies [pp. 27-29] [pdf,. 0.4 Mb] Upcoming PICES publications and meetings [p. 30] [pdf,. 0.2 Mb] North Pacific Transitional Areas Symposium [p. 31] [pdf, 0.5 Mb] Gijon Symposium and other PICES announcements [p. 32] [pdf, 0.4 Mb]

PICES Press, Vol. 9, No. 1, January 2001

The state of PICES science – 2000 [pp. 1-2] [pdf, 0.6 Mb] The state of the western North Pacific in the first half of 2000 [pp. 3-5] [pdf, 0.7 Mb] The status of the Bering Sea: January – August 2000 [pp. 6-7] [pdf, 0.3 Mb] The state of the eastern North Pacific since spring 2000 [pp. 8-9] [pdf, 0.4 Mb] Makoto Kashiwai [pp. 10-14] [pdf, 0.9 Mb] Alkalinity measurement quality improves for PICES nations [pp. 15-16] [pdf, 0.4 Mb] Dr. Timothy R. Parsons Awarded 2001 Japan Prize [p. 17] [pdf, 0.2 Mb] Highlights of the PICES Nineth Annual Meeting [pp. 18-19] [pdf, 0.4 Mb] Tangible outline of the whole elephant (Results of ecosystem studies of biological resources in the far-eastern seas in 1990s) [pp. 20-24] [pdf, 0.7 Mb] The Oshoro Maru: A short history of Hokkaido University's workhorse in the North Pacific [pp. 25-28] [pdf, 0.4 Mb] Bering Sea and North Pacific Ocean Theme Page [pp. 29-30] [pdf, 0.3 Mb] PICES IX Japan/East Sea cruise [pp. 31-34] [pdf, 1.1 Mb] 35 PICES Wooster Award [p. 35] [pdf, 0.2 Mb] PICES Intern Program [p. 35] [pdf, 0.2 Mb] Obituary - Prof. Michael M. Mulin [p. 36] [pdf, 0.2 Mb]

The Metabolic Core and Catalytic Switches Are Fundamental Elements in the Self-Regulation of the Systemic Metabolic Structure of Cells

19 p.

Die lateinische Epigraphie Hispaniens als Quelle für die keltische Gesell-schaft und Religion

Presentado en el III Workshop F.E.R.C.A.N (Fontes Epigraphici Religionum Celticarum Aantiquarum)

利用帧连贯性的实时绘制消隐算法

针对实时图形绘制中关键的隐藏面消除算法的效率问题 ,分析了实时视觉仿真中帧连贯性现象 ,提出了利用帧连贯性改进的深度排序算法。在低端平台上实现了实时视觉仿真 ,比较了简单排序算法和改进排序算法的性能 ,并对不同的视点运动算法执行的效果进行了分析。

Euskarazko irakaskuntza Goierrin XVIII. mendeko bigarren erdian

Kolokioaren agiriak : XVIII.mendea Euskal Herrian letretan eta historian: Baionan 2004ko azaroaren 18 eta 19an, Bonnat museoan / Actes du Colloque:Le XVIIIe siècle au Pays Basque à travers les lettres et l'histoire, Musée Bonnat, Bayonne, 18-19 novembre 2004.

El nuevo consenso de Augusto

[ES] En el caso romano, la stásis por antonomasia es la crisis de la República, cuya resolución traumática conduce a la superación del propio sistema republicano y al surgimiento del Principado de Augusto. El régimen augusteo, tras una fase previa de enfrentamientos civiles, se consolida, apoyado, entres otros elementos, en un nuevo consenso y en la reelaboración de la tradición republicana anterior, que permiten difuminar los elementos autocráticos del sistema. La idea de patria constituye un concepto clave en la ideología del nuevo régimen.

Codigo Brasiliense, ou, Collecção das leis, alvarás, decretos, cartas regias &c., promulgadas no Brasil desde a feliz chegada do Principe Regente N. S. a estes Estados

O Codigo Brasiliense reúne as primeiras leis promulgadas em solo brasileiro, desde o ano de 1808 até 1822, abrangendo todo o Período Joanino. Essas leis fazem parte dos primeiros impressos produzidos pela Impressão Regia, possuindo, portanto, a característica de incunábulos brasileiros. Segundo pesquisa da John Carter Brown Library, existem várias versões tipograficamente diferentes, não encadernadas, impressas possivelmente em Lisboa. As diferenças podem ser detectadas, particularmente, pela capital ornamentada E, cuja variante digitalizada encontra-se no site daquela instituição. É muito raro encontrar em um mesmo acervo os 3 volumes que compõem o Código e, mais ainda, encontrar exemplares completos. É obra importantíssima para a memória brasileira.

Galeria dos brasileiros illustres (os contemporaneos) : retratos dos homens mais illustres do Brasil na politica, sciencias e letras, desde a guerra da independencia até os nossos dias : copiados do natural e lithographados por S.A. Sisson, acompanhados das suas respectivas biographias, publicada sob a protecção de sua Magestade o Imperador

Galeria dos brasileiros illustres traz retratos copiados do natural e litografados das principais figuras brasileiras da política, ciências e letras, com biografias redigidas por diversos escritos da época, por alguns dos próprios biografados ou por membros de suas famílias. Considerada a mais importante de Sisson, esta obra teve tiragem reduzida e muitos exemplares foram desmanchados por antiquários que emolduravam os retratos, vendendo-os por alto preço. Segundo Borba de Moraes, "é muito difícil encontrar-se hoje em dia um exemplar perfeito e em boas condições" e que "só muito raramente aparece um exemplar à venda."

Adhesive behavior of two-dimensional power-law graded materials

In this paper, we investigate the adhesive contact between a rigid cylinder of radius R and a graded elastic half-space with a Young's modulus varying with depth according to a power-law, E = E-0(y/c(0))(k) (0 < k < 1), while the Poisson's ratio v remains constant. The results show that, for a given value of ratio R/C-0, a critical value of k exists at which the pull-off force attains a maximum; for a fixed value of k, the larger the ratio R/c(0), the larger the pull-off force is. For Gibson materials (i.e., k = 1 and v = 0.5), closed-form analytical solutions can be obtained for the critical contact half-width at pull-off and pull-off force. We further discuss the perfect stick case with both externally normal and tangential loads.