Abstract: Embodiments of this application disclose a heat sink, a heat dissipation unit, and a server. A first surface of the heat sink is provided with a heat dissipation fin, and a second surface of the heat sink is configured to dock with a circuit board. A heating element, such as a chip, is arranged on the circuit board. A die of the chip is located on a surface of the chip away from the circuit board, that is, the chip is packaged into a flipchip or packaged into a flipchip with an exposed die. At a position corresponding to the die, the second surface of the heat sink is provided with a protection groove, with a cross-sectional area of the protection groove being at least greater than an area of the die.

Abstract: This application discloses a liquid cooling heat dissipation plate and a liquid cooling electronic device, wherein the liquid cooling heat dissipation plate includes a cooling plate unit, a liquid inlet and a liquid outlet are provided at side walls of the cooling plate unit, the liquid inlet is in connection with the liquid outlet through a penetrating channel, and the penetrating channel respectively penetrates two opposite mounting surfaces of the cooling plate unit; further, a pair of fin bases are respectively lapped at positions on the two mounting surfaces corresponding to the same straight channel, and the seal plate unit is lapped at a position on the mounting surface corresponding to positions in the penetrating channel that are not covered by the fin base; and any two of the fin base, the seal plate unit, and the mounting surface are fastened by friction welding.

Abstract: A flotation process for treating coal slime in which coal slime, a collecting agent and a frothing agent are fed into an ore slurry pretreater, and salt-containing waste water of coal chemical industry discharged from a coal chemical enterprise is fed as dilution water into the ore slurry pretreater and mixed together to complete mineralization; the mineralized ore slurry is subjected to a rough separation operation, the products obtained in the rough separation operation are subjected to a fine separation operation, and the ash content of the fine separation tailings is tested with an ash analyzer; the tailings are returned into the ore slurry pretreater for separation again if the ash content of the fine separation tailings is greater than 20%; otherwise the tailings are discharged as fine separation tailing products if the ash content of the fine separation tailings is smaller than 20%; the fine separation tailing products discharged through a pipeline enter into a pressure filter for dehydration, and filt

Abstract: The present invention discloses a Multiple Signal Classification (MUSIC) corrosion monitoring method via excitation beam forming and weighted image fusing. Because damage-related scattering signals are weak and precision of the MUSIC algorithm is affected, the present invention first introduces excitation beam forming and two arrays into the MUSIC method, to enhance scattering signals of corrosive damage and improve their signal-to-noise ratios. Then, the two arrays serve as an excitation array or a sensor array in turn, by assigning weight to fused corrosive damage images of the two arrays, monitoring of corrosive damage in blind zones of the one-dimensional linear arrays is realized. Finally, factors related to the corrosive damage are calculated based on eigenvalues of covariance matrixes of array signals, to determine the depth of the corrosive damage.

Abstract: The present invention discloses a Multiple Signal Classification (MUSIC) corrosion monitoring method via excitation beam forming and weighted image fusing. Because damage-related scattering signals are weak and precision of the MUSIC algorithm is affected, the present invention first introduces excitation beam forming and two arrays into the MUSIC method, to enhance scattering signals of corrosive damage and improve their signal-to-noise ratios. Then, the two arrays serve as an excitation array or a sensor array in turn, by assigning weight to fused corrosive damage images of the two arrays, monitoring of corrosive damage in blind zones of the one-dimensional linear arrays is realized. Finally, factors related to the corrosive damage are calculated based on eigenvalues of covariance matrixes of array signals, to determine the depth of the corrosive damage.