Abstract: Optical calculation method and system for relay protection based on Faraday magneto-optical rotation effect are provided. A cascaded optical computing approach is employed, where three optical current transformers are connected in series on a single optical path. Final output optical signal represented as a cascaded multiplication of outputs of three optical current transformers, carries a Faraday rotation angle containing differential current information. Differential current required for protection is computed by modulation ratio which is calculated by use of a carrier and modulation wave signals of the output optical signal detecting by filtering circuit from the third optical current transformer.

Abstract: Optical calculation method and system for relay protection based on Faraday magneto-optical rotation effect are provided. A cascaded optical computing approach is employed, where three optical current transformers are connected in series on a single optical path. Final output optical signal represented as a cascaded multiplication of outputs of three optical current transformers, carries a Faraday rotation angle containing differential current information. Differential current required for protection is computed by modulation ratio which is calculated by use of a carrier and modulation wave signals of the output optical signal detecting by filtering circuit from the third optical current transformer.

Abstract: A method for preparing a basic copper carbonate is provided. The method includes: mixing a copper hydroxide with water to obtain a precursor slurry; adding an accelerator to the precursor slurry and mixing the two to obtain a first mixture; introducing gaseous carbon dioxide into the first mixture for reaction whereby obtaining a crude basic copper carbonate; and purifying the crude basic copper carbonate whereby obtaining the basic copper carbonate. The accelerator is at least one selected from the group consisting of an ammonia water and an ammonium salt.

Abstract: The present disclosure relates to the fields of chemical engineering and environmental protection, and in particular to a method of preparing high purity copper sulfate by using an acidic copper chloride etching waste liquid, which includes: introducing liquid ammonia into a first acidic copper chloride etching solution and a second acidic copper chloride etching solution, mixing the obtained solutions and allowing the mixture to be subjected to crystallization and filtration to produce an intermediate copper oxychloride; washing and separating copper oxychloride and adding it into a sulfuric acid solution to obtain a copper sulfate slurry, and then adding water to the copper sulfate slurry and performing cooling, crystallization and separation to obtain Semi-finished copper sulfate; adding a first solution to Semi-finished copper sulfate and then performing heating, and temperature-controlled filtration, and performing cooling, crystallization and centrifugation on an obtained first filtrate so as to obtain

Abstract: A chemically strengthened glass ceramic includes strengthening layers respectively formed on opposite sides, and each of the strengthening layers includes a potassium strengthening layer and a sodium strengthening layer sequentially located from a surface to an inside of the chemically strengthened glass ceramic. A depth of the potassium strengthening layer is 0.01 micrometers (?m) to 5 ?m. A depth of the sodium strengthening layer is greater than or equal to 0.1t, where t is a thickness of the chemically strengthened glass ceramic. An average transmittance of a three-dimensional (3D) chemically strengthened glass ceramic in an optical wavelength range of 400 nanometers (nm) to 700 nm is greater than or equal to 85 percent %; a b value of a Lab color chromaticity indicator is greater than or equal to ?2.0; and a haze is less than or equal to 0.25%.

Abstract: A curved glass and a preparation method is provided. The preparation method for curved glass includes: melting a glass batch into a glass liquid, and clearing the glass liquid; introducing the cleared glass liquid into a mold cavity with a preset shape, and forming, by using a compression molding process, a glass product with a shape corresponding to that of the curved glass, where a size of the glass product is greater than a size of the curved glass; annealing the molded glass product; and processing the annealed glass product into the curved glass based on the shape and the size of the curved glass.

Abstract: The present disclosure relates to the technical field of resource utilization of ammonia-nitrogen wastewater and in particular to a system for determining an evaporation endpoint by image recognition in an evaporation and crystallization process of an ammonia-nitrogen wastewater. The key points of the technical scheme are as follows: the system includes an evaporator, a sampling platform, a data transmission module, and an image recognition system; the sampling platform is disposed below an evaporation interface of the evaporator to collect crystals dropping from the evaporation interface and collect image information of the crystals; the data transmission module is configured to transmit data of the sampling platform to the image recognition system; the image recognition system is configured to process the image information of the crystals obtained by the sampling platform and determine an evaporation and crystallization endpoint.

Abstract: The present disclosure relates to the field of battery technologies and in particular to a bipolar current collector modified by a self-healing conductive coating and a preparation method and application thereof. The key points in the technical scheme are as follows: the method includes: preparing microcapsules containing a healing agent; preparing a slurry containing the microcapsules, a catalyst, an adhesive and a conductive filler; coating the slurry on a surface of a current collector substrate to obtain a bipolar current collector with a self-healing conductive coating. in a case of occurrence of perforation of the current collector, the self-healing microcapsules in the self-healing conductive coating may crack under an external stress and the healing agent is released and can immediately perform polymerization reaction under the action of a catalyst to generate a self-heating material which can quickly and accurately repair the cracks or holes on the current collector layer.

Abstract: Methods, apparatus, systems, and articles of manufacture are disclosed to predict power consumption in a server. An example apparatus includes interface circuitry to obtain a power prediction request corresponding to the server range determiner circuitry to divide a training data set into a first sub-range of data and a second sub-range of the data; a data point in the training data set representative of resource utilization of a workload and a corresponding power consumption metric of the workload; model trainer circuitry to train first candidate models based on the first sub-range of the data and second candidate models based on the second sub-range of the data; and prediction selector circuitry to: select a first prediction model from the first candidate models; and select a second prediction model from the second candidate models, outputs of the first and the second prediction models to predict the power consumption of the server.

Abstract: A chemically toughened microcrystalline glass has a Na/Li exchange layer, and has a compressive stress layer. A depth of the compressive stress layer and a total thickness t of the chemically toughened microcrystalline glass meet the following: the depth of the compressive stress layer is 0.15 t to 0.22 t. In addition, a compressive stress intensity CS50 at a toughening depth of 50 ?m in a surface layer of the chemically toughened microcrystalline glass and the total thickness t of the chemically toughened microcrystalline glass meet the following: CS50 is 130+(20 t?13)×15 Mpa to 230+(20 t?13)×15 MPa. In addition, CS50 and the depth of the compressive stress layer meet the following: CS50/(Doc?50) is 1.4 to 6.

Abstract: The present invention relates to a mechanical tunneling apparatus and process for a tunnel in a quicksand stratum. The mechanical tunneling apparatus comprises isolating apparatuses arranged at an upper end and a lower end of a supporting apparatus; an excavation apparatus arranged at a front end of the supporting apparatus; a spraying apparatus arranged on the isolating apparatuses and the excavation apparatus; a muck discharging apparatus arranged at a lower part of the supporting apparatus; and a propulsion apparatus arranged at a rear end of the supporting apparatus.

Abstract: The present invention relates to an experimental apparatus for researching characteristics of subsea tunnel at bottom of seabed under wave, comprising main control system, wave making test system, rock and soil confining pressure test system and water level regulation test system, wherein a bottom of the rock and soil confining pressure test system is connected with the water level regulation test system; a bottom of the wave making test system is connected with the rock and soil confining pressure test system; and all test systems are electrically connected with the main control system. The experimental apparatus, when being small, may simulate the situation of the subsea tunnel under a nonlinear complex wave, may consider the common action of the seabed and the wave, and may regulate water levels and soil pressures, having perfect functions and effectively exploring the effect of various aspects on the subsea tunnel.

Abstract: The present disclosure relates to the field of water treatment technologies, and in particular to a treatment method of a leachate from hazardous waste landfill site. The key points of the technical scheme were as follows: adding sodium carbonate to the leachate to obtain a calcium carbonate residue and a first waste liquid; adding hydrochloric acid to the first waste liquid to obtain a first mixed solution; heating the first mixed solution and introducing a given amount of chlorine gas into the first mixed solution while introducing air, to obtain a second waste liquid and a first mixed gas; introducing the first mixed gas into an alkaline liquid absorption tower; heating the second waste liquid to obtain an evaporation condensate water and a concentrated liquid; centrifuging the concentrated liquid to obtain a sodium chloride wet salt and a centrifuged liquid.

Abstract: The present invention relates to method for filling deformable karst cave, and the steps are: penetrating a grouting pipe into an elastic silicone tube, penetrating the grouting pipe and the elastic silicone tube into a deformable bracket, and lowering into a karst cave; sealing the elastic silicone tube, injecting silicate resin materials into the grouting pipe, and injecting steel fiber reinforced grout to implement a “block stone-like” structure; sealing the elastic silicone tube, separating the “block stone-like” structure from the elastic silicone tube to complete a “block stone-like” structure; lowering the elastic silicone tube and the deformable bracket, sealing the elastic silicone tube, lowering the elastic silicone tube and the deformable bracket tore construct the “block stone-like” structure, and completing the filling. The present invention may effectively stabilize the karst cave, ensure safe tunnel construction and stable surrounding rocks, and improve engineering construction speed.

Abstract: The present invention belongs to the technical field of ocean traffic engineering, and relates to a fabricated ocean tunnel structure with an escape device and an application method thereof. The present invention includes a fabricated ocean tunnel structure and an escape device. the partition plate separates a middle bin in the tunnel, and the escape device is connected into the middle bin; and the escape device includes a rescue capsule, transverse ladders are evenly arranged in the rescue capsule, and a balancing weight block and a rescue equipment area are arranged at the bottom of the rescue capsule. The ocean tunnel structure can be provided with a rescue device during installation, and the safety of personnel escape can be guaranteed; therefore, the safety of the ocean tunnel structure is improved, cost is relatively low, secondary damage to the ocean tunnel structure is not needed.

Abstract: Embodiments of this application provide microcrystalline glass, which is obtained by performing microcrystallization on mother glass. In this application, microcrystallization is performed on the mother glass, so that nano microcrystalline particles are precipitated from the mother glass to obtain the microcrystalline glass. The nano-sized microcrystalline particles can slow down stress concentration at a crack tip, to deflect and hinder microcrack propagation, thereby improving anti-drop performance of glass. An experimental result shows that after microcrystallization is performed on the glass provided in the present invention, fracture toughness of the glass is 1.0 MPa·m1/2 or more, which is improved by 20% or more coMPared with that of glass without microcrystallization; and a ball drop height of the glass is 1000 mm or more, which is improved by 30% or more coMPared with that of glass without microcrystallization.

Abstract: This application provides phase-separated glass prepared from basic glass through phase separation. This application to further provides tempered glass prepared from basic glass by sequentially performing phase separation and chemical strengthening. This application further provides a method for preparing the phase-separated glass, a method for preparing the tempered glass, a housing that is of an electronic device and that includes the phase-separated glass or the tempered glass, a display of an electronic device, and an electronic device. In this application, phase separation is performed on the basic glass to form two-phase mixed phase-separated glass that includes an alkali-boron-rich separated phase and a silicon-rich separated phase. The phase-separated glass can prevent micro-cracks in the glass from propagating, thereby improving mechanical properties such as fracture toughness of the glass and then improving anti-drop performance of the glass.

Abstract: Embodiments of this application provide glass and a preparation method thereof, a glass member and a preparation method thereof, and an electronic device. The glass includes glass phase layers that is located on a surface layer of the glass and includes no crystal, and a glass-ceramic layer that is stacked with the glass phase layers and includes crystals. In the glass according to the embodiment of this application, the surface layer of the glass is a complete glass phase, so that the surface layer has high ion exchange efficiency in a chemical strengthening process, which is conductive to stress enhancement of the surface layer. In addition, an interior of the glass is the glass-ceramic layer, which can resist a central tensile stress and crack propagation, so that the glass has both a high fracture toughness of glass-ceramics and a deep chemical strengthening stress of glass, and has excellent anti-drop performance.

Abstract: The present invention relates to a mechanical tunneling apparatus and process for a tunnel in a quicksand stratum. The mechanical tunneling apparatus comprises isolating apparatuses arranged at an upper end and a lower end of a supporting apparatus; an excavation apparatus arranged at a front end of the supporting apparatus; a spraying apparatus arranged on the isolating apparatuses and the excavation apparatus; a muck discharging apparatus arranged at a lower part of the supporting apparatus; and a propulsion apparatus arranged at a rear end of the supporting apparatus. The mechanical apparatus of the present invention may effectively increase a tunneling speed and safety for the tunnel in the quicksand stratum, ensure the stability of surrounding rocks of the tunnel, and reduce a large volume of collapse of the quicksand stratum due to tunnel construction disturbance.

Abstract: The present invention relates to method for filling deformable karst cave, and the steps are: penetrating a grouting pipe into an elastic silicone tube, penetrating the grouting pipe and the elastic silicone tube into a deformable bracket, and lowering into a karst cave; sealing the elastic silicone tube, injecting silicate resin materials into the grouting pipe, and injecting steel fiber reinforced grout to implement a “block stone-like” structure; sealing the elastic silicone tube, separating the “block stone-like” structure from the elastic silicone tube to complete a “block stone-like” structure; lowering the elastic silicone tube and the deformable bracket, sealing the elastic silicone tube, lowering the elastic silicone tube and the deformable bracket tore construct the “block stone-like” structure, and completing the filling. The present invention may effectively stabilize the karst cave, ensure safe tunnel construction and stable surrounding rocks, and improve engineering construction speed.