Abstract: A method for optimizing data access performance, which is applied to an intermediate device, is described. The intermediate device is a network device between a client and a server side, there are one or more clients and one or more server sides. The method includes the intermediate device parsing a received first packet to obtain a feature of the first packet, where the first packet is from a terminal on which one of the clients is located, the first packet is used to request data from one of the server sides, the feature indicates the data requested by using the first packet, and the feature is carried in a part that is of the first packet and that corresponds to application layer data. The method may also include, when the intermediate device stores the data requested by using the first packet, sending the data requested by using the first packet to the terminal.

Abstract: A low-viscosity liquid detergent composition comprising an antifoam and a non-ionic surfactant.

Abstract: A card clamp is provided. The card clamp includes a first clamping plate (1), a second clamping plate (2), a connecting belt (3), a first metal connector and a second metal connector. The first clamping plate (1) is provided with a first through groove (4), a first side surface (5) and a second side surface. The first side surface (5) and the second side surface are parallel to each other. The first through groove (4) penetrates through the first side surface (5) and the second side surface. The second clamping plate (2) is provided with a second through groove (7), a third side surface (8) and a fourth side surface, The third side surface (8) and the fourth side surface are parallel to each other. The second through groove (7) penetrates the third side surface (8) and the fourth side surface.

Abstract: A process of removing microorganism from an article of clothing is provided in which the process comprises the steps of a) providing an article of clothing in a washing machine; and b) contacting said article of clothing during a wash sub-cycle of said washing machine with a liquid detergent composition comprising a surfactant system and an organic acid, wherein the composition has a neat pH of from 1.5 to 5.0.

Abstract: An anti-microbial laundry detergent composition comprising an anti-microbial agent that is a diphenyl ether, an organic acid and an anionic surfactant comprising a C6-C20 linear alkylbenzene sulfonate, wherein the composition has a neat pH of from 1.5 to 5.0.

Abstract: A query method and a query device, where the method includes determining N execution plans respectively corresponding to N query requests according to the received N query requests, determining at least two same first sub-plans, generating a first sub-query result corresponding to any one of the at least two same first sub-plans, and in a process of generating, according to the N query requests, a query result corresponding to each of the N query requests, the same first sub-query result corresponding to any one of the first sub-plans is used for all the same first sub-plans. Hence, a large amount of repeated calculation can be reduced, database system resources are reduced, and query efficiency and a throughput of a database system in a large-scale concurrent query application scenario are improved.

Abstract: A card clamp is provided. The card clamp includes a first clamping plate (1), a second clamping plate (2), a connecting belt (3), a first metal connector and a second metal connector. The first clamping plate (1) is provided with a first through groove (4), a first side surface (5) and a second side surface. The first side surface (5) and the second side surface are parallel to each other. The first through groove (4) penetrates through the first side surface (5) and the second side surface. The second clamping plate (2) is provided with a second through groove (7), a third side surface (8) and a fourth side surface, The third side surface (8) and the fourth side surface are parallel to each other. The second through groove (7) penetrates the third side surface (8) and the fourth side surface.

Abstract: The present invention discloses an opposite arc isolation device of a high voltage direct current relay, including a movable contact assembly and a fixed contact assembly, wherein the movable contact assembly includes a movable spring plate and a left movable contact and a right movable contact fixed at left and right ends of the movable spring plate; the fixed contact assembly includes a left fixed contact corresponding to the left movable contact and a right fixed contact corresponding to the right movable contact; an arc isolation member made of insulating material is provided between the left movable contact and the right fixed contact; the front-to-rear dimension L of the arc isolation member is greater than the front-to-rear width M of a joint surface of the movable contacts with the fixed contacts; and, the arc isolation member has a height H that enables the isolation of opposite arcs between the two sets of movable and fixed contacts.

Abstract: The present invention discloses a sealed HVDC relay, comprising an insulating hood and a yoke plate which is extended upward to form a cylindrical fixing portion; the insulating hood has an overturned cup structure; a chamber for accommodating moving contacts and stationary contacts is formed by the yoke plate and the insulating hood together; a lower end of the insulating hood and the fixing portion of the yoke plate are fitted with each other by threads; and the portion fitted by threads between the lower end of the insulating hood and the fixing portion is sealed by adhesive pouring. In the present invention, with the insulating hood made of ceramics, the stiffness of the relay structure of the present invention is promised. The absence of a brazing process makes the relay of the present invention short in manufacturing period and low in cost. With regard to the present invention, the sealing performance of the relay is promised by adhesive pouring, and a service voltage of the relay can be increased.

Abstract: The present invention discloses a moving iron core guide mechanism for an HVDC relay, comprising a pushrod, an upper section of the pushrod being located above a yoke plate and fixed with a moving contact assembly, a middle section and a lower section of the pushrod passing through the yoke plate downward, the middle section of the pushrod being fixed with a moving iron core; the moving iron core is located inside a magnetic conductive cylinder of a U-shaped yoke; a lower bushing is fixed inside the magnetic conductive cylinder, and the lower bushing is located below the moving iron core; a lower guide hole running from top to bottom is formed on the lower bushing; and the lower section of the pushrod is always fitted inside the lower guide hole of the lower bushing, and the pushrod is in smooth contact with an inner wall of the lower guide hole.

Abstract: A query method and a query device, where the method includes determining N execution plans respectively corresponding to N query requests according to the received N query requests, determining at least two same first sub-plans, generating a first sub-query result corresponding to any one of the at least two same first sub-plans, and in a process of generating, according to the N query requests, a query result corresponding to each of the N query requests, the same first sub-query result corresponding to any one of the first sub-plans is used for all the same first sub-plans. Hence, a large amount of repeated calculation can be reduced, database system resources are reduced, and query efficiency and a throughput of a database system in a large-scale concurrent query application scenario are improved.

Abstract: The present invention discloses a horizontal-deflection prevention mechanism for an HVDC relay, comprising a moving contact assembly which comprises a moving reed and moving contacts arranged at left and right ends of the moving reed; an upper section of a pushrod is located above a yoke plate and fixed with the moving reed; a positioning plate is provided on the yoke plate; and a left return spring is connected between a left end of the moving reed and the positioning plate, and a right return spring is connected between a right end of the moving reed and the positioning plate.

Abstract: The present invention discloses an opposite arc isolation device of a high voltage direct current relay, including a movable contact assembly and a fixed contact assembly, wherein the movable contact assembly includes a movable spring plate and a left movable contact and a right movable contact fixed at left and right ends of the movable spring plate; the fixed contact assembly includes a left fixed contact corresponding to the left movable contact and a right fixed contact corresponding to the right movable contact; an arc isolation member made of insulating material is provided between the left movable contact and the right fixed contact; the front-to-rear dimension L of the arc isolation member is greater than the front-to-rear width M of a joint surface of the movable contacts with the fixed contacts; and, the arc isolation member has a height H that enables the isolation of opposite arcs between the two sets of movable and fixed contacts.

Abstract: The present invention discloses a single-wheel electric balancing scooter, comprising a wheel, a driving motor located within the wheel, a battery pack serving as a power supply of the driving motor, a self-balancing control system, and a balance signal sensor. A saddle is provided above the wheel; the saddle is mounted on a rack which is connected and fixed to a fixed shaft of the wheel; a handle is provided on a front side of the wheel, with a lower end of the handle being connected to the rack; and a front end of the rack is connected with an auxiliary wheel rack and an auxiliary wheel is provided at a lower end of the auxiliary wheel rack. The present invention has the following advantages that it is easier for driving and better to control the balance of the scooter body; the scooter body may be dragged on the ground; and the scooter body may be kept upright when not in use.

Abstract: The present invention discloses a horizontal-deflection prevention mechanism for an HVDC relay, comprising a moving contact assembly which comprises a moving reed and moving contacts arranged at left and right ends of the moving reed; an upper section of a pushrod is located above a yoke plate and fixed with the moving reed; a positioning plate is provided on the yoke plate; and a left return spring is connected between a left end of the moving reed and the positioning plate, and a right return spring is connected between a right end of the moving reed and the positioning plate.

Abstract: The present invention discloses a moving iron core guide mechanism for an HVDC relay, comprising a pushrod, an upper section of the pushrod being located above a yoke plate and fixed with a moving contact assembly, a middle section and a lower section of the pushrod passing through the yoke plate downward, the middle section of the pushrod being fixed with a moving iron core; the moving iron core is located inside a magnetic conductive cylinder of a U-shaped yoke; a lower bushing is fixed inside the magnetic conductive cylinder, and the lower bushing is located below the moving iron core; a lower guide hole running from top to bottom is formed on the lower bushing; and the lower section of the pushrod is always fitted inside the lower guide hole of the lower bushing, and the pushrod is in smooth contact with an inner wall of the lower guide hole.

Abstract: The present invention discloses a sealed HVDC relay, comprising an insulating hood and a yoke plate which is extended upward to form a cylindrical fixing portion; the insulating hood has an overturned cup structure; a chamber for accommodating moving contacts and stationary contacts is formed by the yoke plate and the insulating hood together; a lower end of the insulating hood and the fixing portion of the yoke plate are fitted with each other by threads; and the portion fitted by threads between the lower end of the insulating hood and the fixing portion is sealed by adhesive pouring. In the present invention, with the insulating hood made of ceramics, the stiffness of the relay structure of the present invention is promised. The absence of a brazing process makes the relay of the present invention short in manufacturing period and low in cost. With regard to the present invention, the sealing performance of the relay is promised by adhesive pouring, and a service voltage of the relay can be increased.

Abstract: The present invention discloses a single-wheel electric balancing scooter, comprising a wheel, a driving motor located within the wheel, a battery pack serving as a power supply of the driving motor, a self-balancing control system, and a balance signal sensor. A saddle is provided above the wheel; the saddle is mounted on a rack which is connected and fixed to a fixed shaft of the wheel; a handle is provided on a front side of the wheel, with a lower end of the handle being connected to the rack; and a front end of the rack is connected with an auxiliary wheel rack and an auxiliary wheel is provided at a lower end of the auxiliary wheel rack. The present invention has the following advantages that it is easier for driving and better to control the balance of the scooter body; the scooter body may be dragged on the ground; and the scooter body may be kept upright when not in use.