Results 21 to 30 of about 197,212 (362)
A Columbia River Basalt Group Aquifer in Sustained Drought: Insight from Geophysical Methods
Resources, 2015 Aquifers within the Columbia River Basalt Group (CRBG) provide a critical water supply throughout much of the Pacific Northwest of the United States. Increased pumping has resulted in water level declines in this region. Recharge into this aquifer system
Mark W. Piersol, Kenneth F. Sprenke
doaj +1 more source
Electrochemical stability of ZnMn2O4: Understanding Zn-ion rechargeable battery capacity and degradation [PDF]
J. Phys. Chem. C 126, 10957-10967 (2022), 2022 We present a refined Mn-Zn-H$_2$O Pourbaix diagram with the emphasis on parameters relevant for the Zn/MnO$_2$ rechargeable cells. It maps out boundaries of electrochemical stability for MnO$_2$, ZnMn$_2$O$_4$, ZnMn$_3$O$_7$, and MnOOH. The diagram helps to rationalize experimental observation on processes and phases occurring during charge/discharge ...
arxiv +1 more source
Recharging the batteries [PDF]
BMJ, 1996 Parachuting into someone else's life for a few days does not, on the whole, yield anything very deep in the way of experience. But it offers glimpses, hints, possibilities. The turned door handle admits a crack of light, and you can always return later to open it wide, step inside, and take up serious residence in the room you spotted on that flying ...
openaire +3 more sources
Assessment of Groundwater Resources in Jaffna Limestone Aquifer
Tropical Agricultural Research, 2012 This study is centered on quantitative estimation of groundwater resources of a selected study area in a limestone aquifer, which is the main resource for agriculture, domestic use and water supply in Jaffna Peninsula.
M Thushyanthy, CS De Silva
doaj +1 more source
Journal of Groundwater Science and Engineering, 2022 Increasing water demands, especially in arid and semi-arid regions, continuously exacerbate groundwater as the only reliable water resources in these regions.
Shima Nasiri +2 more
doaj +1 more source
Mobile Wireless Rechargeable UAV Networks: Challenges and Solutions [PDF]
IEEE Communication Magazine 2022, 2022 Unmanned aerial vehicles (UAVs) can help facilitate cost-effective and flexible service provisioning in future smart cities. Nevertheless, UAV applications generally suffer severe flight time limitations due to constrained onboard battery capacity, causing a necessity of frequent battery recharging or replacement when performing persistent missions ...
arxiv +1 more source
Physical Structure of the Epikarst
Acta Carsologica, 2013 Epikarst is a weathered zone of enhanced porosity on or near the surface or at the soil/bedrock contact of many karst landscapes. The epikarst is essentially the upper boundary of a karst system but is also a reaction chamber where many organics ...
William K. Jones
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Regional assessment of groundwater recharge in the lower Mekong Basin [PDF]
, 2017 Groundwater recharge remains almost totally unknown across the Mekong River Basin, hindering the evaluation of groundwater potential for irrigation. A regional regression model was developed to map groundwater recharge across the Lower Mekong Basin where
Douangsavanh, Somphasith +3 more
core +2 more sources
Quantitative Assessment of Fluoride Release and Recharge Ability of Different Restorative Materials in Different Media: An in Vitro Study [PDF]
Journal of Clinical and Diagnostic Research, 2014 Objective: To measure fluoride release and recharge ability of restorative materials in deionised water, artificial saliva and lactic acid. Materials and Methods: Pellets were prepared from GC2, Ketac N100 and Beautifil II.
Mahesh M. Jingarwar +3 more
doaj +1 more source
Water Supply, 2022 Stable isotope composition of δ2H and δ18O was investigated in the water resources of the Shwan sub-Basin northeast of Iraq. The study objects conceived the possible factors that affect the stable isotopes’ composition in precipitation additionally to ...
Hind Fadhil Al-Gburi +3 more
doaj +1 more source