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Investigation of factors influencing groundwater quality in a typical Karoo aquifer in Beaufort West town of South Africa
Springer Science and Business Media LLC - Tập 79 - Trang 1-15 - 2020
L. Ligavha-Mbelengwa, M. Gomo
The study investigates factors that influence the evolution of groundwater chemistry and groundwater quality in a typical Karoo aquifer in South Africa. Groundwater samples were collected from production and monitoring boreholes during spring, summer and autumn seasons. The samples were analysed for inorganic chemistry species. Bivariate plots, stoichiometric analysis and principal component analy... hiện toàn bộ
Modeling on adsorption–desorption of trace metals to suspended particle matter in the Changjiang Estuary
Springer Science and Business Media LLC - Tập 53 - Trang 1751-1766 - 2007
Y. Y. Zhang, E. R. Zhang, J. Zhang
The uptake and release of trace metals (Cu, Ni, Zn, Cd, and Co) in estuaries are studied using river and sea end-member waters and suspended particulate matter (SPM) collected from the Changjiang Estuary, China. The kinetics of adsorption and desorption were studied in terms of environmental factors (pH, SPM loading, and salinity) and metal concentrations. The uptake of the metals studied onto SPM... hiện toàn bộ
Rapid formation of large coastal sand bodies after emplacement of Magdalena river jetties, northern Colombia
Springer Science and Business Media LLC - Tập 16 - Trang 187-194 - 1990
J. O. Martinez, O. H. Pilkey, W. J. Neal
The Magdalena River is noted for its high discharge of river sediment and its importance as the sediment source for a large delta complex and downdrift coastal sand bodies. The emplacement of jetties, completed in 1935 to stabilize the river mouth, contributed to major changes in the downstream coastal sand bodies. The western delta front retreated an average 65 m/yr. Puerto Colombia spit detached... hiện toàn bộ
A double-porosity slug test model for a sloping fracture zone
Springer Science and Business Media LLC - - 2015
Ying Liu, Jingli Shao, Yali Cui
Microscopic modelling of the hydraulic fracturing process
Springer Science and Business Media LLC - Tập 68 - Trang 1169-1186 - 2012
Kenneth I. Eshiet, Yong Sheng, Jianqiao Ye
A microscopic perspective is introduced in this study which offers a detailed insight at the inter-particle level to the geo-mechanical responses caused by fluid injection and the resulting pressure build-up. This was achieved by employing the Discrete Element Method (DEM) to model the pressure development and the subsequent fracturing and/or cavity propagation. This technique represents the forma... hiện toàn bộ
Conceptual site models for sinkhole formation and remediation
Springer Science and Business Media LLC - Tập 76 - Trang 1-12 - 2017
Wanfang Zhou, Mingtang Lei
Extensive research has been done on investigation, monitoring, risk evaluation and land management to prevent formation of sinkholes and subsidences in karst terranes. Little emphasis is, however, given to the various processes and methodologies with respect to their remediation. Sinkholes are a surface symptom of complicated erosion and deformation processes that occur on the surface and in the s... hiện toàn bộ
Nitrogen and phosphate adsorption on biofilms in reclaimed water
Springer Science and Business Media LLC - Tập 74 - Trang 451-461 - 2015
Zigong Ning, Mingchao Liang, Zhenhua Wang, Yunkai Li, Yaoze Liu, Tianzhi Wang
Biofilms, abundantly attached on the surfaces of multiple media (such as pebbles and aquatic plants) in rivers or lakes reusing reclaimed water (RW), are of great significance to contaminants’ self-purification of water bodies. In this paper, the nitrogen and phosphate adsorption characteristics of such biofilms were studied by the batch method, using biofilms cultivated under an outdoor simulativ... hiện toàn bộ
Landfill site selection using integrated fuzzy logic and analytic network process (F-ANP)
Springer Science and Business Media LLC - Tập 68 - Trang 1745-1755 - 2012
A. A. Isalou, V. Zamani, B. Shahmoradi, H. Alizadeh
Locating a suitable place to dispose the municipal solid wastes hygienically (sanitary landfill) is one of the fundamental subjects relating the environmental stability of cities and, in general, the human settlements. This final stage of solid waste management requires observance of a series of principles and criteria mainly including environmental, social, economical, and general acceptance crit... hiện toàn bộ
Environmental significance and hydrochemical processes at a cold alpine basin in the Qilian Mountains
Springer Science and Business Media LLC - - 2015
Zongxing Li, Qi Feng, Jianguo Li, Yanhui Pan, Tingting Wang, Liu Li, Xulin Guo, Yan Gao, Bing Jiang, R.T. Guo
Vulnerability assessment of urban groundwater resources to nitrate: the case study of Mashhad, Iran
Springer Science and Business Media LLC - Tập 76 - Trang 1-15 - 2016
Parisa Asadi, Behzad Ataie-Ashtiani, Aliasghar Beheshti
Groundwater vulnerability assessment of urban areas is a challenging task in the fast trend of urbanization around the globe. This study introduces a new approach for modifying well-known parameters of common vulnerability indexes to adjust them for urban areas. The approach is independent of a specific weighting system. The aquifer of Mashhad city, contaminated by domestic wastewater, is selected... hiện toàn bộ
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