Earth’s core has often been described as just a giant ball of iron and nickel. Now, a new study argues that it is also a major storage place for hydrogen, possibly equivalent to dozens of oceans’ ...
Moreover, American companies can hope to sell only so much to Russians. Their $2.2trn economy is smaller than Italy’s, with a shrinking middle class. The KSE estimates that, in 2021, the total annual ...
Abstract: Active disturbance-rejection methods are effective in estimating and rejecting disturbances in both transient and steady-state responses. This paper presents a deep observation on and a ...
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