Modeling on adsorption–desorption of trace metals to suspended particle matter in the Changjiang EstuarySpringer 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
Nitrogen and phosphate adsorption on biofilms in reclaimed waterSpringer 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
Vulnerability assessment of urban groundwater resources to nitrate: the case study of Mashhad, IranSpringer 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
An introduction to Chinese safety regulations for blasting vibrationSpringer Science and Business Media LLC - Tập 67 - Trang 1951-1959 - 2012
Wen-bo Lu, Yi Luo, Ming Chen, Da-qiang Shu
By reviewing the development history and the state-of-art, this paper introduces Chinese safety regulations for blasting vibration for adjacent structures and equipments, as well as for structures themselves under blasting operation, such as high rock slopes, underground caverns, foundation rock masses, and fresh concrete. The mechanism of failures or damages induced by blasting vibration, the ana...... hiện toàn bộ
Evaluation of a capture zone overlay method for designing groundwater remediation systemsSpringer Science and Business Media LLC - Tập 31 - Trang 21-26 - 1997
P. F. Hudak
Simplified approaches are often used to model the removal of groundwater contamination. These approaches can yield poor remediation schemes because they incorrectly portray the effects of multiple pumping wells. In this study, a pumping configuration designed by graphically overlaying capture zones having an identical, quasi-elliptical shape was evaluated with a numerical mass transport model. Af...... hiện toàn bộ
Slope creep behavior: observations and simulationsSpringer Science and Business Media LLC - Tập 73 - Trang 275-287 - 2014
Kuang-Tsung Chang, Louis Ge, Hsi-Hung Lin
Rock slopes undergoing long–term effects of weathering and gravity may gradually deform or creep downslope leading to geological structures such as bending, bucking, fracturing, or even progressive failure. This study uses geomechanics-based numerical modeling to qualitatively explain the cause and evolution of slope creep behavior. Constitutive models used include the creep, Mohr–Coulomb, and ani...... hiện toàn bộ