Abstract: A full hydrometallurgical process for recovering metals from complex rare-precious material includes: adding the material to hydrochloric acid solution, adding oxidant, filtering to obtain chloride solution and chloride residue; using two-stage countercurrent gold loading to obtain gold-loaded solution and post-loading solution, reducing the gold-loaded solution, clarifying and filtering to separate organic phase, post-reduction solution and sponge gold; evaporating and concentrating the post-reduction solution to produce concentrated solution 1 and condensate, cooling and crystallizing the concentrated solution, returning filtered residual oxalic acid to reduction process, and returning post-crystallization solution to gold-loading process; low-temperature distilling the post-loading solution to obtain concentrated solution 2; high-temperature distilling the concentrated solution 2 to obtain concentrated solution 3; performing directional crystallization and centrifugal filtration on the concentrated solutio

Abstract: A solar cell, a manufacturing method, and a photovoltaic module are provided. In one aspect, an solar cell includes a silicon substrate, a first transport layer, and a carrier collection layer. The silicon substrate has a first surface and a second surface opposite to each other. The first transport layer is arranged on at least one of the first surface and the second surface. The first transport layer includes a polysilicon layer having an amorphous silicon region. The amorphous silicon region is arranged on at least a part of a surface of the polysilicon layer away from the silicon substrate. The carrier collection layer is arranged on the first transport layer, and at least a part of the carrier collection layer is in contact with the amorphous silicon region.

Abstract: The present application discloses a back contact cell and a method for manufacturing same. The back contact cell includes a silicon substrate. A plurality of first regions and a plurality of second regions are sequentially and alternately disposed on a back surface of the silicon substrate. A first semiconductor layer is disposed on each of the first regions. A second semiconductor layer is disposed on each of the second regions. The first semiconductor layer is connected to a first transparent electrode pattern. The second semiconductor layer is connected to a second transparent electrode pattern. The first transparent electrode pattern and the second transparent electrode pattern are consistently isolated by a first gap.

Abstract: A solar cell, a manufacturing method, and a photovoltaic module are provided. In one aspect, an solar cell includes a silicon substrate, a first transport layer, and a carrier collection layer. The silicon substrate has a first surface and a second surface opposite to each other. The first transport layer is arranged on at least one of the first surface and the second surface. The first transport layer includes a polysilicon layer having an amorphous silicon region. The amorphous silicon region is arranged on at least a part of a surface of the polysilicon layer away from the silicon substrate. The carrier collection layer is arranged on the first transport layer, and at least a part of the carrier collection layer is in contact with the amorphous silicon region.

Abstract: Techniques for operating a wind farm include setting an area of interest, a forecast interval, and a maximum lag time for using mesoscale forecasts. Mesoscale forecasts are collected for a training time interval TT at model grid locations. TT is at least ten times the maximum lag time. Fine-scale wind measurements are collected in the area during TT. Selected parameters of the mesoscale forecasts, and coefficients of an evolving ML forecast model are determined based on the mesoscale forecasts and the fine-scale wind measurements during the TT ending at the current time. Then, the coefficients and the mesoscale forecast for the selected parameters during the lag time produce a forecast wind at the wind turbines during the forecast interval. Operation of the wind farm is based on the forecast wind.

Abstract: A blower with a waterproof function includes a volute casing having a first housing, a second housing, and a volute cavity defined within the volute casing between the first housing and the second housing, an impeller disposed within the volute cavity, and a motor driving the rotation of the impeller, the motor including an output shaft. A sidewall of the second housing of the volute casing further includes a ventilation area disposed adjacent to the motor, the output shaft of the motor passes through the ventilation area and is connected to the impeller, and a water-blocking rib is disposed on a periphery of the ventilation area.

Abstract: The present application discloses a gold recovery system and recovery method thereof from a gold separation solution, where the recovery system includes an gold selective extraction system, a reduction system, a washing system, and an evaporation system; and the recovery method specifically includes the following steps: (1) primary extraction; (2) secondary extraction; (3) gold precipitation by reduction; (4) washing of gold powder; and (5) evaporation of waste solution. In the present application, by using chloride ions to recognize AuCl4?, the gold-rich solution is directly reduced to produce qualified gold powder product (99.995%); the gold-barren solution and the post-reduction solution are evaporated and concentrated, with the condensate reused to realize the recovery and regeneration of chloride ions, the recycling of the extractant and no generation of waste solution or waste gas in the production process.

Abstract: The present application discloses a back-contact solar cell and a preparation method thereof. The back-contact solar cell includes: a semiconductor substrate; a tunnel oxide layer and a doped crystalline silicon layer, where the tunnel oxide layer is located in a first region, and the doped crystalline silicon layer is located on a surface of the tunnel oxide layer away from the semiconductor substrate; an intrinsic non-crystalline silicon layer and a doped non-crystalline silicon layer where the intrinsic non-crystalline silicon layer is located in a second region and extends on part of a surface of the doped crystalline silicon layer away from the tunnel oxide layer, and the doped non-crystalline silicon layer is located on a surface of the intrinsic non-crystalline silicon layer away from the semiconductor substrate; and an isolating structure including an isolating layer and an isolating groove.

Abstract: The present application discloses a back contact solar cell, a manufacturing method therefor, and a photovoltaic module. The back contact solar cell includes: a semiconductor substrate, a transparent conductive layer, and an isolating protective structure. The semiconductor substrate comprises a first surface and a second surface, wherein the second surface comprises N-type regions and P-type regions alternately distributed and separated by isolating regions. The transparent conductive layer covers the second surface, wherein isolating grooves running through the transparent conductive layer are respectively formed on the isolating regions. The isolating grooves isolate parts of the transparent conductive layer located on the N-type regions from parts of the transparent conductive layer located on the P-type regions. The transparent conductive layer comprises a turned-up part close to an edge of the isolating grooves that is turned upwards along a direction facing away from the semiconductor substrate.

Abstract: The present application discloses a back-contact solar cell and a preparation method thereof. The back-contact solar cell includes: a semiconductor substrate; a tunnel oxide layer and a doped crystalline silicon layer, where the tunnel oxide layer is located in a first region, and the doped crystalline silicon layer is located on a surface of the tunnel oxide layer away from the semiconductor substrate; an intrinsic non-crystalline silicon layer and a doped non-crystalline silicon layer where the intrinsic non-crystalline silicon layer is located in a second region and extends on part of a surface of the doped crystalline silicon layer away from the tunnel oxide layer, and the doped non-crystalline silicon layer is located on a surface of the intrinsic non-crystalline silicon layer away from the semiconductor substrate; and an isolating structure including an isolating layer and an isolating groove.

Abstract: A method for processing a page fault in memory access includes: sending a first access request, where the first access request is used to access memory, and the first access request includes a first virtual address; receiving the first access request, and sending a first response, where the first response carries page fault information, and the page fault information indicates a fault type of a page fault corresponding to the first virtual address; and receiving the first response, to process a related access request based on the fault type indicated by the page fault information carried in the first response.

Abstract: The present disclosure provides a back contact solar cell and a manufacturing method therefor, and a photovoltaic module, In one example, a back contact solar cell includes a semiconductor substrate, a transparent conductive layer, and an isolating protective structure. The semiconductor substrate includes a first surface and a second surface opposite to the first surface. The second surface includes N-type regions and P-type regions alternately distributed at intervals, and an isolating region between each of the N-type regions and a corresponding P-type region. The transparent conductive layer covers the second surface. An isolating groove extending through at least the transparent conductive layer is formed on each isolating region The isolating protective structure is formed on a partial region of a groove bottom of the isolating groove. The isolating protective structure includes at least a material of the transparent conductive layer.

Abstract: The present invention relates to Compounds of Formula I: and pharmaceutically acceptable salts or prodrug thereof. The present invention also relates to compositions comprising at least one compound of Formula I, and methods of using the compounds of Formula I for treatment of cardiometabolic diseases including high blood pressure, heart failure, kidney disease, and diabetes in a subject.

Abstract: A heat source sensor includes a plurality of first wires extending in a first direction, a plurality of second wires extending in a second direction different from the first direction and crossing the plurality of first wires, and a plurality of nodes. Each node is defined at a crossing of a first wire of the plurality of first wires and a second wire of the plurality of second wires. The first wire is secured to the second wire at the node. Each node of the plurality of nodes defines a measurement point of the heat source sensor, with a difference in thermoelectric electromotive forces between two nodes of the plurality of nodes indicative of a temperature difference between the two nodes.

Abstract: The present disclosure provides a back contact solar cell and a manufacturing method therefor, and a photovoltaic module, In one example, a back contact solar cell includes a semiconductor substrate, a transparent conductive layer, and an isolating protective structure. The semiconductor substrate includes a first surface and a second surface opposite to the first surface. The second surface includes N-type regions and P-type regions alternately distributed at intervals, and an isolating region between each of the N-type regions and a corresponding P-type region. The transparent conductive layer covers the second surface. An isolating groove extending through at least the transparent conductive layer is formed on each isolating region The isolating protective structure is formed on a partial region of a groove bottom of the isolating groove. The isolating protective structure includes at least a material of the transparent conductive layer.

Abstract: Implementations relating to a back contact solar cell and its preparation method are provided in this disclosure. In an implementation, a back contact solar cell includes a silicon substrate having a first surface. The first surface comprises a first conductive region, a second conductive region, and an insulation region located between the first conductive region and the second conductive region. The back contact solar cell further comprises a first transport layer located on the first conductive region and a second transport layer located on the second conductive region. The second transport layer extends from the second conductive region through the insulation region to the first conductive region, and partially covers the first transport layer, wherein a thickness of a first portion of the second transport layer located on the insulation region is greater than a thickness of a second portion of the second transport layer located on the second conductive region.

Abstract: A filtering and circulation system includes a skimmer having an upper water inlet and a lower water inlet positioned opposite the upper water inlet. A water flow driving device is fluidly coupled to the skimmer via a drainage pipe. The upper water inlet is positioned adjacent a top surface of the pool, the lower water inlet is positioned adjacent a bottom surface of the pool, and the water flow driving device circulates water discharged from the skimmer into the pool.

Abstract: The invention discloses a method for acoustic indoor positioning based on CDMA, which comprises: generating a BPSK signal; The BPSK signal was detected, the collected signal was de-carrierized and low-pass filtered, and then the data was down-sampled to the design code rate, and then the coarse position of the identification code was determined by the prefix code. Finally, the data with the same length as the identification code was intercepted from the data for matching filtering through the coarse position. Four base stations were designed in each area to obtain three TDOA observations generated by four TOA information, and the terminal position could be obtained through the three TDOA observations. Different areas are distinguished by different identification codes to achieve wide area coverage. The invention provides an effective means for accurate positioning in an indoor environment.

Abstract: Disclosed herein are compounds of formula (I) which are inhibitors of an IDO enzyme: (I). Also disclosed herein are uses of the compounds in the potential treatment or prevention of an IDO-associated disease or disorder. Also disclosed herein are compositions comprising these compounds. Further disclosed herein are uses of the compositions in the potential treatment or prevention of an IDO-associated disease or disorder.

Abstract: Disclosed are a log parsing method and device, a server and a storage medium, relating to the field of network operation and maintenance. The method includes: acquiring (101) sample log data; performing (102) clustering processing on the sample log data according to the length of each sample log in the sample log data, and beginning and ending keywords of each sample log in the sample log data, to obtain a plurality of log clusters; determining (103) a quality score of each log cluster of the plurality of log clusters obtained by the clustering processing; and parsing (104) a log according to the plurality of log clusters and quality scores of the plurality of log clusters.