Constraining complex aquifer geometry with geophysics (2-D ERT and MRS measurements) for stochastic modelling of groundwater flow

Stochastic modelling is a useful way of simulating complex hard-rock aquifers as hydrological properties (permeability, porosity etc.) can be described using random variables with known statistics. However, very few studies have assessed the influence of topological uncertainty (i.e. the variability of thickness of conductive zones in the aquifer), probably because it is not easy to retrieve accurate statistics of the aquifer geometry, especially in hard rock context. In this paper, we assessed the potential of using geophysical surveys to describe the geometry of a hard rock-aquifer in a stochastic modelling framework. The study site was a small experimental watershed in South India, where the aquifer consisted of a clayey to loamy-sandy zone (regolith) underlain by a conductive fissured rock layer (protolith) and the unweathered gneiss (bedrock) at the bottom. The spatial variability of the thickness of the regolith and fissured layers was estimated by electrical resistivity tomography (ERT) profiles, which were performed along a few cross sections in the watershed. For stochastic analysis using Monte Carlo simulation, the generated random layer thickness was made conditional to the available data from the geophysics. In order to simulate steady state flow in the irregular domain with variable geometry, we used an isoparametric finite element method to discretize the flow equation over an unstructured grid with irregular hexahedral elements. The results indicated that the spatial variability of the layer thickness had a significant effect on reducing the simulated effective steady seepage flux and that using the conditional simulations reduced the uncertainty of the simulated seepage flux. As a conclusion, combining information on the aquifer geometry obtained from geophysical surveys with stochastic modelling is a promising methodology to improve the simulation of groundwater flow in complex hard-rock aquifers. (C) 2013 Elsevier B.V. All rights reserved.

Convenção addicional ao Tratado de 22 de janeiro de 1815, entre os muito altos, e muito poderosos senhores El-Rei do Reino Unido de Portugal, do Brazil, e Algarves, El-Rei do Reino Unido da Grande Bretanha, e Irlanda : feita em Londres pelos Plenipotenciarios de huma e outra Corte em 28 de julho de 1817, e ratificada por ambas

Define ser lícito o tráfico de escravos nos territórios portugueses ao sul do Equador. Ou seja, em Angola e Moçambique.

Tratado de abolição do traffico de escravos em todos os lugares da Costa da África ao Norte do Equador, entre os muito altos, e muito poderosos senhores o Principe Regente de Portugal, e El-Rei do Reino Unido da Grande Bretanha e Irlanda : feito em Vienna pelos Plenipotenciarios de huma e outra Corte em 22 de janeiro de 1815, e ratificado por ambas

Por este tratado, a Inglaterra abre mão da cobrança do restante do empréstimo de 600 mil libras que fizera a Portugal em 1809, a título de indenização.

Collecção das Leis do Brazil de 1815

Parte 1 - Cartas de Lei, Alvarás, Decretos e Cartas Régias

Voyages dans la partie septentrionale du Bresil, depuis 1809 jusqu'en 1815, comprenant les provinces de Pernambuco, Fernambouc, Seara, Paraiba, Maragnan, etc.

Titulo original : travels in brazil : in the years from 1809, to 1815.

Voyage au Brésil, dans les années 1815, 1816 et 1817

Ouvrage enrichi d'un superbe atlas, compose de 41 planches gravées en taille-douce, et de trois carte.

Frances E. W. Harper and Pauline E. Hopkins: the uplifting of black women through literature

A presente dissertação tem como objetivo apresentar duas influentes autoras afro-americanas do século XIX, Frances E. W. Harper e Pauline E. Hopkins. Ambas as autoras, através de seus romances Iola Leroy, or, Shadows Uplifted (1892) e Contending Forces: a Romance Illustrative of Negro Life North and South (1900) respectivamente, entrelaçam ficção e história com o propósito de criar novas alternativas de discurso, afastando-se, portanto, do oficial. Ademais, o presente trabalho propõe demonstrar como Frances Harper e Pauline Hopkins fazem uso do espaço literário com a finalidade de escrever a história do oprimido, permitindo, principalmente, que as mulheres afro-americanas dessem voz as suas experiências e as suas próprias histórias. Assim sendo, a literatura produzida por Frances e Harper e Pauline Hopkins será analisada como forma de empoderamento da comunidade afro-americana, principalmente como forma de aquisição de poder para as Mulheres Afro-Americanas.

地下水数值模型界面Ground Water Vistas介绍——以美国Edwards含水层Barton泉稳定流模型为例

Ground Water Vistas软件是目前国际上盛行的三维地下水水流和溶质运移模拟的图形使用界面.本文介绍了Ground Water Vistas在三种模式下的功能,分析评述了它的优缺点.并以美国Edwards含水层Barton泉稳定流模型为实例,展示了Ground Water Vistas强大的前处理、后处理功能及其优良的三维可视化效果.Edwards含水层喀斯特发育程度极高,其模型研究对我国喀斯特地区地下水资源的评价与管理具有借鉴意义和指导作用.

A Sermon occasioned by the death of Mrs. Sarah R. Baker

Funeral sermon

A Sermon on the occasion of the death of Mrs. Mary Chapman Halsey

Memorial Sermon

In southern India : a visit to some of the chief mission stations in the Madras presidency / by Mrs. Murray Mitchell.

http://www.archive.org/details/insouthernindivi00mitcuoft