Results 91 to 100 of about 907,541 (362)

Groundwater dependence and drought within the southern African development community [PDF]

, 2005
A groundwater situation analysis of the SADC region has been undertaken as part of the World Bank GEF Programme as a basis for ensuring equitable use of groundwater resources, particularly during periods of drought, both for human needs and for ...
Davies, J., Farr, J.L., Gumiremhete, R., Robins, N.S.   +3 more
core  

Impacts of 25 years of groundwater extraction on subsidence in the Mekong delta, Vietnam

Environmental Research Letters, 2017
Many major river deltas in the world are subsiding and consequently become increasingly vulnerable to flooding and storm surges, salinization and permanent inundation.
L. Erban, S. Gorelick, H. Zebker, B. Scanlon, R. Reedy, C. Faunt, Yuanrong He, E. Ramalho, C. Midões   +8 more
semanticscholar   +1 more source

Groundwater depletion will reduce cropping intensity in India

Science Advances, 2021
Groundwater depletion will reduce cropping intensity in India, and canal irrigation cannot fully substitute for this loss. Groundwater depletion is becoming a global threat to food security, yet the ultimate impacts of depletion on agricultural ...
Meha Jain, R. Fishman, P. Mondal, G. Galford, N. Bhattarai, S. Naeem, U. Lall, Balwinder-Singh, R. DeFries   +8 more
semanticscholar   +1 more source

Manipulating Charge Dynamics in Carbon Nitride by Carbon Dot Doping for Efficient Photocatalysis

Advanced Science, EarlyView.
A series of carbon dot (CD) doped graphitic carbon nitride (g‐C3N4) materials have been rationally synthesized, which exhibited different photophysical properties, excitonic behaviors, and photocatalytic degradation activities. It provides valuable insights to deepen the understanding of exciton dynamics based on g‐C3N4 materials, and rational design ...
Lingfeng Ouyang, Maggie Ng, Zhang‐Hong Zhou, Hao Wu, Man‐Chung Tang, Season Si Chen   +5 more
wiley   +1 more source

Nitrogen dynamics in the shallow groundwater of a riparian wetland zone of the Garonne, SW France: nitrate inputs, bacterial densities, organic matter supply and denitrification measurements [PDF]

, 2003
This study highlights the role of interactions between surface and sub-surface water of the riparian zone of a large river (the Garonne, SW France). Information is given about the role of surface water in supplying Dissolved Organic Carbon (DOC ) to the
F. Garabétian, J. L. Rols, J. M. Sánchez-Pérez, J. M. Sánchez-Pérez, M. Loubet, P. Vervier, P. Weng, S. Sauvage, T. Bariac   +8 more
core   +5 more sources

Estimating hydraulic parameters for the complex hydrodynamic models [PDF]

Mining and Metallurgy Engineering Bor, 2017
Hydrodynamic models have usually been calibrated manually, by trial-and-error, with different values of hydraulic parameters and hydraulic characteristics of boundary conditions.
Polomčić Dušan, Bajić Dragoljub, Ratković Jelena, Hajdin Bojan   +3 more
doaj   +1 more source

Local Charge Density Enhancement Strategy in Nitrogen‐rich Covalent Organic Framework for Boosted Iodine Removal From Water

Advanced Science, EarlyView.
The covalent organic framework, phen‐TPA, is designed for efficient iodine removal from aqueous solutions, featuring optimized iodine‐binding N‐sites. It shows the fastest iodine removal kinetics for I2 and the highest capacity for I3−. Large‐scale flow‐through tests demonstrate its effective separation of I2 and I3− in high‐salinity environments ...
Yue Ma, Jinjiao Pan, Huazhen Rong, Lu Liu, Yilei Zhang, Xuewen Cao, Jiacheng Zhang, Tao Liu, Ning Wang, Yihui Yuan   +9 more
wiley   +1 more source

User guide : Groundwater Vulnerability (Scotland) GIS dataset. Version 2 [PDF]

, 2011
This report describes a revised version (Version 2) of the groundwater vulnerability (Scotland) digital dataset produced by the British Geological Survey (BGS).
Doce, D.D., MacDonald, A.M., O Dochartaigh, B.E., Rutter, H.K.   +3 more
core  

Design optimization of groundwater circulation well based on numerical simulation and machine learning

Scientific Reports
The optimal design of groundwater circulation wells (GCWs) is challenging. The key to purifying groundwater using this technique is its proficiency and productivity.
Zhang Fang, Hao Ke, Yanling Ma, Siyuan Zhao, Rui Zhou, Zhe Ma, Zhiguo Liu   +6 more
doaj   +1 more source

Two‐Step Tandem Catalysis for High‐Efficiency Ammonia Synthesis Via Nitrate Reduction on Anion‐Intercalated CoNi LDH and Cu/Cu2O

Advanced Science, EarlyView.
By integrating Cu/Cu2O and CoNi LDH, tandem kinetic descriptors, including a volcano curve, are employed to predict rate constants, facilitating ideal kinetic matching for efficient ammonia synthesis. The highest ammonia yield (1.12 mmol cm−2 h−1) and Faraday efficiency (99.78%) are achieved by rate matching between Cu/Cu2O and MoO4‐CoNi LDH.
Changzheng Lin, Weijia Li, Hao Chen, Jiangtao Feng, Mengyuan Zhu, Jinwen Shi, Mingtao Li, Bo Hou, Zhenyu Wang, Xin Chen, Jia Liu, Wei Yan   +11 more
wiley   +1 more source