Abstract: The present invention provides a joint optimization method and system for delay and spectrum occupation in a cloud-edge collaborative network. The method includes: initializing a cloud-edge collaborative network, and generating a set of user requests; establishing a target function of minimum average end-to-end delay and minimum spectrum slot occupation of a user request; during processing of each user request based on the target function, sequentially determining whether a node and path selection uniqueness constraint, a mobile edge computing (MEC) server load constraint, a spectrum resource occupation and uniqueness constraint, a spectrum continuity constraint, and a spectrum consistency constraint are satisfied, where if all constraints are satisfied, the user request is successfully processed, and the process turns to step S4; or if any constraint is not satisfied, the user request fails to be processed; and calculating average end-to-end delay and spectrum resource occupancy of the user request.

Abstract: This invention relates to a surfactant composition, production and use thereof in tertiary oil recovery. The present surfactant composition comprises a cationic surfactant and an anionic-nonionic surfactant, and exhibits significantly improved interfacial activity and stability as compared with the prior art. With the present surfactant composition, a flooding fluid composition for tertiary oil recovery with improved oil displacement efficiency and oil washing capability as compared with the prior art could be produced.

Abstract: This disclosure discloses a radiative cooling optical filter, comprising a substrate. One side of the substrate is polished, and the rough side of the substrate is provided with a metal reflective layer. The polished side of the substrate is subsequently provided with the intermediate layers and a top layer. The intermediate layer comprises alternatingly arranged layers A and layers B. The thickness of each layer A and layer B is 50-400 nm. The material of the layer A is silicon dioxide or aluminum oxide, and the material of the layer B is titanium dioxide, silicon nitride or silicon carbide. The material of the top layer is ytterbium fluoride, yttrium fluoride or zinc sulfide. The intermediate layer and the top layer jointly constitute a multi-resonant absorption enhancer in the atmospheric transparent window.

Abstract: A control method of an intelligent sterility test pump, a sterilization method and its application. The control method includes monitoring the real-time current of a DC drive motor through a current detection module, to adjust the rotating linear velocity of a peristaltic pump head in real time; when the peristaltic pump head is in a state of pushing a liquid to be tested, reducing the rotating linear velocity of the peristaltic pump head; and when the peristaltic pump head is in an idling state, increasing the rotating linear velocity of the peristaltic pump head. A sterilization method includes the control method of the intelligent sterility test pump. Application of the sterilization method in preparation or detection of foods and medicines.

Abstract: Disclosed are a control method of an intelligent sterility test pump, a sterilization method and its application. The control method comprises steps: monitoring the real-time current of a DC drive motor through a current detection module, to adjust the rotating linear velocity of a peristaltic pump head (3) in real time; when the peristaltic pump head (3) is in a state of pushing a liquid to be tested, reducing the rotating linear velocity of the peristaltic pump head (3); and when the peristaltic pump head (3) is in an idling state, increasing the rotating linear velocity of the peristaltic pump head (3); the invention further provides a sterilization method comprising the control method of the intelligent sterility test pump; the disclosure also provides application of the sterilization method in preparation or detection of foods and medicines.

Abstract: A detection device for tiny particles in a liquid is provided. The detection device comprises includes a flow cell, a laser, a scattered light collection device, a photoelectric detector, a fiber Bragg grating and a first optical fiber coupler, wherein scattered light collected by the scattered light collection device is sent to the fiber Bragg grating through the first optical fiber coupler, and reflected light of the fiber Bragg grating after receiving the scattered light is sent to the photoelectric detector through the first optical fiber coupler. The device can eliminate most scattered light generated by the liquid, and reduce the interference of the scattered light of the liquid to scattered light signals generated by the particles, so that the scattered light signals captured by the photoelectric detector are mainly light signals generated by the particles.

Abstract: The present invention relates to an air-vapor separation device for separating air from refrigerant vapor comprising an air-vapor separation tank, a separation membrane, a mixed gas input passage, a refrigerant vapor output passage, and a control unit, wherein the mixed gas input passage is provided with a compressor and a first control valve, and the refrigerant vapor output passage is provided with a second control valve. The air-vapor separation device of the present invention has the advantages of simple structure, convenient operation, and is reliable and effective in separation of air and refrigerant vapor, with good separation effect.

Abstract: This disclosure discloses a radiative cooling optical filter, comprising a substrate. One side of the substrate is polished, and the rough side of the substrate is provided with a metal reflective layer. The polished side of the substrate is subsequently provided with the intermediate layers and a top layer. The intermediate layer comprises alternatingly arranged layers A and layers B. The thickness of each layer A and layer B is 50-400 nm. The material of the layer A is silicon dioxide or aluminum oxide, and the material of the layer B is titanium dioxide, silicon nitride or silicon carbide. The material of the top layer is ytterbium fluoride, yttrium fluoride or zinc sulfide. The intermediate layer and the top layer jointly constitute a multi-resonant absorption enhancer in the atmospheric transparent window.

Abstract: The present invention relates to an air-vapor separation device for separating air from refrigerant vapor comprising an air-vapor separation tank, a separation membrane, a mixed gas input passage, a refrigerant vapor output passage, and a control unit, wherein the mixed gas input passage is provided with a compressor and a first control valve, and the refrigerant vapor output passage is provided with a second control valve. The air-vapor separation device of the present invention has the advantages of simple structure, convenient operation, and is reliable and effective in separation of air and refrigerant vapor, with good separation effect.

Abstract: Disclosed in embodiments of the present invention are a control method and device for an alternating-current and direct-current conversion circuit, and a computer storage medium. The alternating-current and direct-current conversion circuit comprises a first commutation unit, a second commutation unit, and a coupling unit. By obtaining voltage information and current information of the alternating-current and direct-current conversion circuit, a controllable device of the first commutation unit can be controlled to be turned on in delay or turned off in advance; and the second commutation unit is controlled to work in a controllable rectification state or a controllable inversion state or an uncontrollable rectification state.

Abstract: A cooling device of a heating element for an immersion type liquid cooling server, and a manufacturing method for the cooling device. The cooling device comprises: a metal substrate provided on the heating element and covering same. The metal substrate is adjacent to the surface of the heating element. The surface of the metal substrate distant to the heating element comprises a porous metal covering layer located above the heating element and covering same. The porous metal covering layer is exposed on the surface of the metal substrate remote from the heating element and has a thickness of less than 3 mm. By providing a metal substrate having a porous metal covering layer on the surface of a heating element, vaporization cores are improved, the boiling performance of the heating element is improved, and an efficient heat-dissipating effect on the surface of the heating element is achieved.

Abstract: The present invention relates to an air-vapor separation method for separating air from refrigerant vapor in an immersed liquid-cooling system. The immersed liquid-cooling system comprises an immersed server blade cabinet, a condensing device, an air-vapor separator and a refrigerant storage tank, wherein the refrigerant storage tank supplies a liquid refrigerant to the immersed server blade cabinet, and the liquid refrigerant undergoes a phase change to be vaporized into a refrigerant vapor for cooling of the heating element in the immersed server blade cabinet; the condensing device condenses the refrigerant vapor; the air-vapor separator separates a mixed gas in the immersed liquid-cooling system into the air and the refrigerant vapor. The cooling efficiency of the liquid-cooling system is improved by effectively separating the air from the refrigerant vapor in the liquid-cooling system.

Abstract: A caulking gun includes a push disk, a push rod, an adhesive cartridge compartment, a trigger and a gun body; the trigger is hingedly coupled to the middle part of the gun body; the rear end of the push rod is outside the gun body and provided with a braking device; the front end is in the adhesive cartridge compartment through the gun body and provided with a push disk; a push piece for driving the push rod is mounted in the gun body; the front end of the push piece is provided with a return spring; the trigger is provided with a pin position switching device for adjusting the propulsion ratio by adjusting the contact position of the push piece; adjustment of different propulsion ratios enables the caulking gun to be multifunctional to meet the construction requirements of different adhesives.

Abstract: The present disclosure relates to a particle counting method and system. The particle counting method, comprises: obtaining distances between positions closest to a centers of a light channel in paths along which particles pass through the light channel and the centers of the light channel; according to an optical density distribution of the light channel, compensating amplitudes of the pulse signals of the particles when passing through the positions closest to the centers of the light channel in the path along which the particles pass through the light channel such that the compensated amplitudes of the pulse signals of the particles are equal to amplitudes of pulse signals of the particles with the same particle diameters when passing through the centers of the light channel; screening and counting the particles according to the compensated amplitudes of the pulse signals to realize counting of particles with respective particle sizes.

Abstract: A server cooling system includes a shell accommodated with a cooling liquid, a condensation module, a mechanical arm, a buffer bin and a control module. The server cooling system automatically takes out and places in a heating element, and avoids the gasified cooling liquid steam from leaking, improving the safety factor during operation, and reducing loss of the cooling liquid.

Abstract: Disclosed in embodiments of the present invention are a control method and device for an alternating-current and direct-current conversion circuit, and a computer storage medium. The alternating-current and direct-current conversion circuit comprises a first commutation unit, a second commutation unit, and a coupling unit. By obtaining voltage information and current information of the alternating-current and direct-current conversion circuit, a controllable device of the first commutation unit can be controlled to be turned on in delay or turned off in advance; and the second commutation unit is controlled to work in a controllable rectification state or a controllable inversion state or an uncontrollable rectification state.

Abstract: The present invention relates to an air-vapor separation method for separating air from refrigerant vapor in an immersed liquid-cooling system. The immersed liquid-cooling system comprises an immersed server blade cabinet, a condensing device, an air-vapor separator and a refrigerant storage tank, wherein the refrigerant storage tank supplies a liquid refrigerant to the immersed server blade cabinet, and the liquid refrigerant undergoes a phase change to be vaporized into a refrigerant vapor for cooling of the heating element in the immersed server blade cabinet; the condensing device condenses the refrigerant vapor; the air-vapor separator separates a mixed gas in the immersed liquid-cooling system into the air and the refrigerant vapor. The cooling efficiency of the liquid-cooling system is improved by effectively separating the air from the refrigerant vapor in the liquid-cooling system.

Abstract: The present disclosure relates to a particle counting method and system. The particle counting method, comprises: obtaining distances between positions closest to a centers of a light channel in paths along which particles pass through the light channel and the centers of the light channel; according to an optical density distribution of the light channel, compensating amplitudes of the pulse signals of the particles when passing through the positions closest to the centers of the light channel in the path along which the particles pass through the light channel such that the compensated amplitudes of the pulse signals of the particles are equal to amplitudes of pulse signals of the particles with the same particle diameters when passing through the centers of the light channel; screening and counting the particles according to the compensated amplitudes of the pulse signals to realize counting of particles with respective particle sizes.

Abstract: The present invention discloses a visible near-infrared ultra-broadband absorber and its preparation method, comprising a substrate and a five-layer optical film, wherein the bottom film is a bottom metal absorbing layer; a top germanium layer is provided on the top of the bottom metal absorbing layer; and remaining three layers are provided on the top of the top germanium layer with gradually decreasing refractive indexes from the bottom to the top. The present invention is based on the blocking effect of the metal absorbing layer and broadband anti-reflection film stack of the germanium layer, which has realized visible near-infrared ultra-broadband absorption with high efficiency and good angle insensitivity, and has fully surpassed traditional absorbers in terms of performances.

Abstract: A caulking gun includes a push disk, a push rod, an adhesive cartridge compartment, a trigger and a gun body; the trigger is hingedly coupled to the middle part of the gun body; the rear end of the push rod is outside the gun body and provided with a braking device; the front end is in the adhesive cartridge compartment through the gun body and provided with a push disk; a push piece for driving the push rod is mounted in the gun body; the front end of the push piece is provided with a return spring; the trigger is provided with a pin position switching device for adjusting the propulsion ratio by adjusting the contact position of the push piece; adjustment of different propulsion ratios enables the caulking gun to be multifunctional to meet the construction requirements of different adhesives.