Groundwater have been slowly percolating through geological layers for vast amounts of time. If we want to conserve these precious water sources, it is essential that we know how it is flowing and where—from the moment it soaks into the ground as rainfall or snowfall to the moment it reach...
An initial study by Yang (1989) reported that the sandy ridges exhibit a northwest-southeast orientation, with southwest-dipping layers, and were unconformably underlain by estuarine and fluvial sediments. Thus, the ridges were suggested to form by tidal current acting on pre-existing deposits in ...
safety, low cost, and abundance of zinc. However, the slow multi-step reaction of oxygen and heavy reliance on noble-metal catalysts hinder the practical applications of ZABs. Therefore, feasible and advanced non-noble-metal electrocatalysts for air cathodes need to be identified...
Moreover, multivalent ions (i.e., M g2+, Zn2+, and A l3+) are commonly abundant element in the earth's crust, and thus, providing new pathways towards economic energy storage solutions especially for large-scale stationary applications. For exam- ple, Zhang et al. reported...
Charge defects in birnessite layers arise from vacancies, the substitution of layer Mn4+ with lower valence cations like Mn3+, Ni2+, and Co3+, and edge sites [35,78]. The defects can be neutralized by Mn3+, Mn2+, H+, interlayer alkaline/alkaline earth metals, and other cations [79...
The Earth is the only planet the name of which does not result either from a God Roman, or from a Greek God. It is in the nebulas that are born planetary systems. To create a planet we shall thus go to a nebula where the regions of birthrate abound, we shall use two sociable ...