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Electronic pre-equalization of chromatic dispersion for 43 Gb/s DQPSK has been demonstrated employing a developed test chip. The chip enables the BER in fibre with 2450 ps/nm of dispersion to be improved to 7.6E-05 without an optical dispersion compensator.
Numerical simulations were conducted to predict the change of CO2 concentration in the ocean caused by volcanic CO2 seeped from the seafloor in Wakamiko Caldera in Kagoshima Bay. The behavior of CO2 bubbles, their dissolution, and the advection-diffusion of dissolved CO2 in the water column were numerically simulated. A multi-scale ocean model, in which hydrostatic meso-scale and non-hydrostatic small-scale...
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