Abstract: A device measures a frictional force and a film thickness of a lubricating oil film in different surface velocity directions. The device includes an experiment bench. A translation stage is mounted to the experiment bench, and is linearly movable. A main shaft system is mounted to the experiment bench. A glass disc is mounted to the main shaft system and is rotatable. An arcuate guide rail is disposed on the translation stage. A rotary base is mounted to the arcuate guide rail and is movable along the arcuate guide rail. A loading system is mounted to the rotary base. A steel ball of the loading system and the glass disc are movable relative to each other. A rotary bearing in the rotary base is configured to convert a frictional force generated from the relative movement to a pressure allowed to be collected by a pressure sensor on the rotary base.

Abstract: The present disclosure discloses a distributed system and a message processing method. The distributed system includes a client and a plurality of nodes. The client includes processing circuitry that is configured to send a message including a digital signature of the client. The distributed system is in a first consensus mode for reaching a consensus on the message. The processing circuitry obtains results from a subset of the nodes that receive the message. The results have respective digital signatures of the subset of the nodes. After verifying the digital signatures of the subset of the nodes, the processing circuitry of the client determines, based on the results, whether one or more of the nodes in the distributed system is malfunctioned.

Abstract: A touch display substrate and a display device are provided. The touch display substrate includes a plurality of sub-pixel units (10), data lines (20) and touch signal lines (30). For any two adjacent rows of sub-pixel units, the sub-pixel unit (10) in one row of sub-pixel units is staggered in a row direction with respect to the sub-pixel unit (10) in the other row of sub-pixel units adjacent to the one row of sub-pixel units by a distance of X sub-pixel units (10), and 0<X<1; these two sub-pixel units (10) have different colors. Data lines (20) and touch signal lines (30) are at gaps which extend in a column direction and are between the plurality of sub-pixel units (10). The touch signal lines (30) and the data lines (20) are in a same layer and the touch signal lines (30) are insulated from the data lines (20).

Abstract: A method for preparing 2,3-dichloro-5-trifluoromethylpyridine, comprising at a temperature of 100˜150° C. and a pressure of 0.5˜5.0 MP, in presence of at least one catalyst selected from supported metal chloride, supported zeolite molecular sieve and supported heteropolyacid, 2-chloro-5-trifluoromethylpyridine reacts with chlorine gas to obtain 2,3-dichloro-5-trifluoromethylpyridine. The preparing method provided by the present invention has advantages such as high selectivity of desired product, high utilization rate of chlorine gas, moderate process condition, simple operation and less three wastes. The present invention also discloses a preparing method for preparing 2-chloro-5-trifluoromethylpyridine, which is capable of reducing unit consumption, reducing separation cost, and improving safety compared to the prior art.

Abstract: An array substrate, a method of manufacturing an array substrate, a display panel, and an electronic device are provided. The array substrate includes a display area and a peripheral area; the display area includes a pixel region, the pixel region includes a first thin film transistor, and the first thin film transistor includes a first active layer; the peripheral area includes a second thin film transistor, and the second thin film transistor includes a second active layer; and the first active layer includes a material of oxide semiconductor, and the second active layer includes a material of poly-silicon semiconductor.

Abstract: The present invention discloses a method for preparing 2,3-dichloro-5-trifluoromethylpyridine, comprising at a temperature of 100˜150° C. and a pressure of 0.5˜5.0 MP, in presence of at least one catalyst selected from supported metal chloride, supported zeolite molecular sieve and supported heteropolyacid, 2-chloro-5-trifluoromethylpyridine reacts with chlorine gas to obtain 2,3-dichloro-5-trifluoromethylpyridine. The preparing method provided by the present invention has advantages such as high selectivity of desired product, high utilization rate of chlorine gas, moderate process condition, simple operation and less three wastes. The present invention also discloses a preparing method for preparing 2-chloro-5-trifluoromethylpyridine, which is capable of reducing unit consumption, reducing separation cost, and improving safety compared to the prior art.

Abstract: A touch display substrate and a display device are provided. The touch display substrate includes a plurality of sub-pixel units (10), data lines (20) and touch signal lines (30). For any two adjacent rows of sub-pixel units, the sub-pixel unit (10) in one row of sub-pixel units is staggered in a row direction with respect to the sub-pixel unit (10) in the other row of sub-pixel units adjacent to the one row of sub-pixel units by a distance of X sub-pixel units (10), and 0<X<1; these two sub-pixel units (10) have different colors. Data lines (20) and touch signal lines (30) are at gaps which extend in a column direction and are between the plurality of sub-pixel units (10). The touch signal lines (30) and the data lines (20) are in a same layer and the touch signal lines (30) are insulated from the data lines (20).

Abstract: Provided are a composite probiotic lactic acid bacteria powder and a preparation method and use thereof, the composite probiotic lactic acid bacteria powder can be composited from Lactobacillus casei Zhang bacteria powder, Bifidobacterium animalis V9 bacteria powder, Lactobacillus plantarum P8 bacteria powder, Lactobacillus plantarum C2 bacteria powder, with prebiotics and fruit-vegetable powder. The composite probiotic lactic acid bacteria powder has a significantly protective effect against irritable bowel syndrome, oral infection and nasal cavity infection, and can prevent the occurrence of upper respiratory tract infection, at the same time, it can improve gastrointestinal symptoms, regulate gut microbiota and improve the body's immunity.

Abstract: This application relates to the electronic technology application field and provides a silicon-based substrate (10), a substrate, a manufacturing method thereof, and an optoelectronic device. The substrate includes: the silicon-based substrate (10), where one surface of the silicon-based substrate (10) has periodic protrusion structures (101), and there is an angle of inclination between a side face of each protrusion structure (101) and a bottom surface; and a group III-V material layer (20) disposed on the surface that is of the silicon-based substrate (10) and that has the protrusion structures (101).

Abstract: A method for transferring a credit rights certificate is provided, including: generating a target account address according to a debtor account address and a creditor account address in a credit rights certificate transfer request, the target account address being a temporary account address used for storing a credit rights certificate and based on a multi-digital-signature process; transferring a credit rights certificate corresponding to the credit rights certificate transfer request from the debtor account address to the target account address; and transferring the credit rights certificate from the target account address to the creditor account address based on a confirmation instruction from the creditor account address.

Abstract: Embodiments of this application disclose methods, systems, and devices for electronic note identifier allocation and electronic note generation. In one aspect, an electronic note identifier allocation method is performed by a processing node of a distributed computer system. The processing node receives an electronic note identifier application request initiated by a service node. The processing node generates an electronic note identifier set in response to the electronic note identifier application request. The processing node also synchronizes the electronic note identifier in the electronic note identifier set. After the synchronizing, the processing node further the electronic note identifier in the electronic note identifier set to the service node.

Abstract: A method for operating an electronic device is provided. The method includes: receiving a first resource transfer request, the first resource transfer request being used for requesting resource transfer associated with a target certificate of debt; performing verification on the first resource transfer request according to the target certificate of debt stored in a blockchain system; and performing, based on the first resource transfer request, the resource transfer associated with the target certificate of debt, in a case that the verification succeeds.

Abstract: Aspects of the disclosure provide methods and apparatuses for storing data. In some examples, an information processing apparatus that includes processing circuitry is provided. The processing circuitry is configured to receive data and determine a target blockchain based on an attribute associated with the data and blockchain correspondence information. The blockchain correspondence information indicates attributes associated with a plurality of blockchains. Further, the processing circuitry is configured to store a first block that is generated based on the received data in the target blockchain.

Abstract: The invention discloses a method and an apparatus for forming a power-efficient digital-analog hybrid beam in a multi-antenna system, and a device. The method includes the following steps. Perform mathematical modeling on a beam forming design firstly to construct a beam forming optimization problem that minimizes ripples in a main lobe and a side lobe. Convert an original optimization problem into an a constraint-separable optimization problem using a penalty function method. Perform iterative solution finally using a block coordinate descent method. The beam designed by the invention has a small peak-to-average ratio, a power amplification efficiency of a power amplifier is very high, and a limited resolution characteristic of the phase shifter is considered. The ripples in the main lobe and the side lobe of the beam designed are very small and a transition band is very narrow.

Abstract: This application provides a method for issuing a digital certificate performed by a digital certificate issuing center that includes a public-private key generation module and an authentication module. The method includes: receiving a public-private key request from a node in a blockchain network; generating a public key and a private key of the node by using the public-private key generation module, and transmitting the public and private keys to the node; receiving the public key of the node and registration information of the node, and authenticating the registration information by using the authentication module; and generating, in accordance with a determination that the authentication succeeds, a digital certificate of the node by using the authentication module, and transmitting the digital certificate to the node. The embodiments of this application can improve the probative value of an issued digital certificate, thereby improving the security of data exchange in a blockchain network.

Abstract: The present invention provides a method for the preparing of 2-chloro-5-trifluoromethylpyridine, comprising two steps of chlorofluorination reaction and chlorination reaction, the chlorination catalyst used in the chlorination reaction was chosen from a fluoride, an oxide, a hydroxide, a carbonate, or a chloride of magnesium, calcium and barium and a supported palladium catalyst; or under the action of at least one catalyst chosen from ZSM-5, 5A, ? and 13X molecular sieves, 3-trifluoromethylpyridine and chlorine gas phase have reaction to obtain 2-chloro-5-trifluoromethylpyridine. Or, under the action of a catalyst chosen from a fluoride, an oxide, a hydroxide, a carbonate, or a chloride of magnesium, calcium, and barium and a supported palladium catalyst, 3-trifluoromethylpyridine and chlorine gas phase have reaction to obtain 2-chloro-5-trifluoromethylpyridine.

Abstract: An embodiment of this application discloses a node control method performed by a forwarding platform in a distributed computer system. The method includes: establishing, by a forwarding platform, a secure link with a user terminal through a domain name of the forwarding platform; obtaining, by the forwarding platform through the secure link, a request packet transmitted by a user terminal, and the request packet comprising an address identifier of a target node in the distributed computer system and a request content of the user terminal for the target node; encrypting, by the forwarding platform, the request content to obtain a first encrypted packet; and transmitting, by the forwarding platform, the first encrypted packet to the target node according to the address identifier. Computing device and non-transitory computer-readable storage medium counterparts are also contemplated.

Abstract: Aspects of the disclosure provide methods and apparatuses for storing service data. In some examples, an apparatus for storing service data includes processing circuitry. The processing circuitry receives service data of a user and determines, in a plurality of blockchains, a target blockchain according to a user attribute of the user. Based on the service data and an eigenvalue of a block header of a first block in the target blockchain, the processing circuitry generates a second block in the target blockchain. The first block is a previous block of the second block. The second block is used for recording the service data.

Abstract: Provided are a method and system for generating humorous personality information for a robot by using a knowledge base The method includes: performing grouping; establishing a group knowledge base using predictions of each group as an information classification criterion; determining a group type to which an audience belongs; establishing, from the group knowledge base, an audience knowledge base using an audience prediction as an information classification criterion; generating a piece of information or developing another piece of information from said piece of information; establishing a context knowledge base; changing one piece of information in the context knowledge base in a hypothetical manner; changing generated information or changing a development on the basis of the changed information in the context knowledge base; and displaying the changed generated information, hypothetical information, or the changed development. The tacit sharing of the double negation of rationality makes robot humorous.

Abstract: Disclosed herein are methods, systems, and apparatus for cross-chain authentication. One of the methods includes: obtaining an identity confirmation request and a first public key; obtaining an identity verification request and a corresponding identity verification identifier for identity verification of a user associated with the user terminal; sending the identity verification request and the first public key to the user terminal; obtaining digitally signed data, a second public key, and identity verification data; verifying an identity of the user based on the identity verification data; verifying that the first public key and the second public key correspond to the user; and recording authentication data comprising the digitally signed data and the identity verification identifier to a blockchain.