Abstract: A transaction record is created showing a purchase transaction of a customer. A CV profile showing a list of items in the transaction obtained from images is also obtained. The items in the transaction record are compared to items on the list. When there is a discrepancy, an action to take is determined.

Abstract: An information display method, a device and a storage medium. The method includes: acquiring a first image including a first object in a video, determining whether a second object is present in the first image, and when it is determined that the second object is present in the first image and that the second object satisfies a preset positional relationship with the first object, superimposing a first material on an area where the second object is located in the first image. Using the above method, it is realized that when the second object is detected in the image, any material is superimposed on the area where the second object is located, so as to avoid the problem of not being able to use part of special effects or express information when the second object satisfies the preset positional relationship with the first object.

Abstract: Some embodiments provide image evaluation systems and methods, comprising: a plurality of camera systems distributed about a retail facility and each of the plurality of camera systems; and an image processing system configured to receive multiple images over time, process each image comprising: determine, from pixel data, a gradient amplitude and directional component; determine a histogram curve from the gradient amplitudes as a function of the directional component of the pixel data, and identify a key direction relative to a maximum accumulation of the gradient amplitudes; for the gradient amplitudes, of the pixel data, having a corresponding directional component that is within a direction threshold of the key direction, identify a number of local maxima corresponding to the key direction; and determine a quantity of items of the product corresponding to a quantity of the number of local maxima.

Abstract: In some embodiments, apparatuses and methods are provided herein useful to self-checkout verification at a retail facility. In some embodiments, there is provided a system for self-checkout verification at a retail facility including a first optical imaging unit; and a control circuit. The control circuit configured to: receive purchase receipt data; receive one or more images of the items in the container; and execute a machine learning model trained to: perform item detection, item classification, and item verification of each item shown in the one or more images; and output electronic data corresponding to an electronic receipt of the items in the container. The control circuit may automatically detect each unpaid item in the container based on a comparison of the purchase receipt data with the electronic data; and provide an alert signal in response to automatically detecting an unpaid item.

Abstract: An integrated magnetic element includes an accommodating part; a current sensor disposed on the accommodating part; and a transformer disposed on the accommodating part. The transformer includes a magnetic core, a first winding including a plurality of wires, and a second winding, wherein some of the plurality of wires passes through the current sensor to shunt and detect current flowing through the first winding, and current values of the wires are detected by the current sensor to obtain a total current value of the first winding of the transformer according to a shunt ratio by the winding construction of the preset transformer.

Abstract: A transaction record is created showing a purchase transaction of a customer. A CV profile showing a list of items in the transaction obtained from images is also obtained. The items in the transaction record are compared to items on the list. When there is a discrepancy, an action to take is determined.

Abstract: The present invention relates to the field of isobutylene preparation. Disclosed are a catalyst and preparation method thereof, and method for preparing isobutylene by applying the same; the catalyst has a core-shell structure, the core an amorphous silica-alumina particle and/or an aggregate molding thereof, and the shell aluminum oxide comprising silicon and tin; the weight ratio of aluminum oxide comprising silicon and tin to amorphous silica-alumina is 1:60-1:3; in the aluminum oxide comprising silicon and tin, on basis of the weight of aluminum oxide comprising silicon and tin, the content of silicon is 0.5-2 wt %, and of tin is 0.2-1 wt %. The catalyst of the present invention is used to catalyze a mixture of MTBE and TBA to prepare isobutylene, enabling the MTBE cleavage and TBA dehydration reactions to be conducted simultaneously to generate isobutylene, achieving higher conversion rates of TBA and MTBE, and higher selectivity for generating isobutylene.

Abstract: A magnetic device includes a housing, a bobbin, at least one coil, and a first magnetic core and a second magnetic core. The housing has at least one side plate and a bottom plate. The side plate stands on the bottom plate and forms a space with the bottom plate. The bobbin is at least partially located in the space. The bobbin has a cylinder. The at least one coil is wound around the cylinder. Each of the first and second magnetic cores includes a center column, a side column, a connecting portion, and a metal clip. The center column is located in the cylinder. The side column is located outside the coil and away from the bottom plate, such that the coil is located between the side column and the bottom plate. The connecting portion connects the center column and the side column.

Abstract: A copper winding structure includes a first copper sheet having a first body, a first extending part and a second extending part located at two ends of the first body, respectively; and a second copper sheet having a second body, a third extending part and a fourth extending part located at two ends of the second body, respectively, the third extending part intersects with the fourth extending part such that the second body is partially overlapped; after the first copper sheet is stacked with the second copper sheet, the second extending part aligns with the third extending part, and the first extending part and the fourth extending part are located on the same side with respect to the second extending part and the third extending part.

Abstract: A copper winding structure includes a first copper sheet having a first body, a first extending part and a second extending part located at two ends of the first body, respectively; and a second copper sheet having a second body, a third extending part and a fourth extending part located at two ends of the second body, respectively, the third extending part intersects with the fourth extending part such that the second body is partially overlapped; after the first copper sheet is stacked with the second copper sheet, the second extending part aligns with the third extending part, and the first extending part and the fourth extending part are located on the same side with respect to the second extending part and the third extending part.

Abstract: A magnetic device includes a housing, a bobbin, at least one coil, and a first magnetic core and a second magnetic core. The housing has at least one side plate and a bottom plate. The side plate stands on the bottom plate and forms a space with the bottom plate. The bobbin is at least partially located in the space. The bobbin has a cylinder. The at least one coil is wound around the cylinder. Each of the first and second magnetic cores includes a center column, a side column, a connecting portion, and a metal clip. The center column is located in the cylinder. The side column is located outside the coil and away from the bottom plate, such that the coil is located between the side column and the bottom plate. The connecting portion connects the center column and the side column.

Abstract: The present invention relates to the field of isobutylene preparation. Disclosed are a catalyst and preparation method thereof, and method for preparing isobutylene by applying the same; the catalyst has a core-shell structure, the core an amorphous silica-alumina particle and/or an aggregate molding thereof, and the shell aluminum oxide comprising silicon and tin; the weight ratio of aluminum oxide comprising silicon and tin to amorphous silica-alumina is 1:60-1:3; in the aluminum oxide comprising silicon and tin, on basis of the weight of aluminum oxide comprising silicon and tin, the content of silicon is 0.5-2 wt %, and of tin is 0.2-1 wt %. The catalyst of the present invention is used to catalyze a mixture of MTBE and TBA to prepare isobutylene, enabling the MTBE cleavage reaction and TBA dehydration reactions to be conducted simultaneously to generate isobutylene, achieving higher conversion rates of TBA and MTBE, and higher selectivity for generating isobutylene.

Abstract: Disclosed is a catalyst for preparing isobutene by dissociation of methyl tert-butyl ether, the catalyst comprising amorphous silica alumina and a silicalite-1 molecular sieve, wherein the total IR acid amount of weak acids in the catalyst is in a range from 0.020 to 0.080 mmol/g, and the ratio of B acid/L acid of the weak acids is in a range from 2.5:1 to 4.0:1. Also provided is a method of preparing the catalyst and the use thereof. The catalyst has a high selectivity with respect to isobutene, and high conversion of methyl tert-butyl ether, and can also effectively inhibit formation of the by-product dimethyl ether.

Abstract: Disclosed herein are embodiments of an apparatus for preparing rotating disk electrodes. One such apparatus comprises a base, a plurality of disk mounts attached to the base, each configured to receive a respective rotating disk, a plurality of motors each coupled to a corresponding one of the plurality of disk mounts and configured to rotate the corresponding one of the plurality of disk mounts and a controller configured to individually operate each of the plurality of motors.

Abstract: This invention is involved in the field of pharmaceutical technology. It is related to a triazine compound for resisting coccidiosis in chickens, its preparation method and application. This compound has the structure below.

Abstract: Disclosed is a catalyst for preparing isobutene by dissociation of methyl tert-butyl ether, the catalyst comprising amorphous silica alumina and a silicalite-1 molecular sieve, wherein the total IR acid amount of weak acids in the catalyst is in a range from 0.020 to 0.080 mmol/g, and the ratio of B acid/L acid of the weak acids is in a range from 2.5:1 to 4.0:1. Also provided is a method of preparing the catalyst and the use thereof. The catalyst has a high selectivity with respect to isobutene, and high conversion of methyl tert-butyl ether, and can also effectively inhibit formation of the by-product dimethyl ether.

Abstract: The present invention relates to a method of precipitation of metal ions. Mineral(s), oxide(s), hydroxide(s) of magnesium and/or calcium are adopted as raw materials, and the raw material(s) is processed through at least one step of calcination, slaking, or carbonization to produce aqueous solution(s) of magnesium bicarbonate and/or calcium bicarbonate, and then the solution(s) is used as precipitant(s) to deposit rare earth, such as nickel, cobalt, iron, aluminum, gallium, indium, manganese, cadmium, zirconium, hafnium, strontium, barium, copper and zinc ions. And at least one of metal carbonates, hydroxides or basic carbonates is obtained, or furthermore the obtained products are calcined to produce metal oxides. The invention takes the cheap calcium and/or magnesium minerals or their oxides, hydroxides with low purity as raw materials to instead common precipitants such as ammonium bicarbonate and sodium carbonate etc.

Abstract: The application of aqueous solution of magnesium bicarbonate and/or calcium bicarbonate in the process of extraction separation and purification of metals is disclosed, wherein the aqueous solution of magnesium bicarbonate and/or calcium bicarbonate is used as an acidity balancing agent, in order to adjust the balancing pH value of the extraction separation process which uses an acidic organic extractant, improve the extraction capacity of organic phase, and increase the concentration of metal ions in the loaded organic phase.