126results about How to "No blocking" patented technology

The invention discloses a remote procedure calling processing method and device, a remote procedure calling method and device, a remote procedure calling processing system and electronic equipment, wherein the remote procedure calling processing method comprises the following steps of: receiving a service request corresponding to a specific service process sent by a calling process; storing the service request in a request queue to be processed of a service process; when the service request is processed, executing the service process according to the service request by an operating system so as to obtain a process result; and copying the process result in the storage space of the calling process from a kernel of the operating system. By means of the method provided in the invention, when remote process calling is realized, a practical I/O read-write request process cannot be blocked; the operating system does not need to traverse all user processes; data only needs to be copied in a user process for monitoring an event; and thus, the remote procedure calling performance can be improved.

The invention relates to the technical field of windows inter-process communication, and discloses a pipeline-based inter-process message communication method, which comprises the following steps that: 1, a process is registered in a message center and transmits process information, wherein the message center is used for processing a service program of the process, and the process information comprises a message identifier; and 2, the message center transmits a message corresponding to the message identifier to the process. In the communication process of the steps 1 and 2, the process and the message center communicate with each other by using a pipeline. By the method, the inter-process communication can be simply realized.

The invention relates to a numerical control automatic double-ended tenoning machine, comprising a base which transversally extends, wherein two processing mechanisms which are glidingly and symmetrically connected onto the base, a processing space is formed between the two processing mechanisms, and each processing mechanism comprises an engine base, a main shaft device, a feeding device, a material clamping mechanism, a material pressing mechanism and a material pushing mechanism. The numerical control automatic double-ended tenoning machine is simple and reasonable in structure, the processing space and the main shaft device are isolated effectively, dusts, sawdust and the like are prevented from entering a main shaft box to influence the normal operation of the main shaft device, the service life of the main shaft device is effectively prolonged, producing and maintaining costs are saved, and the processing precision is high.

The invention relates to a testing unit for a straight welded pipe, in particular to an automatic magnetic particle testing unit for toe cracks at inner wall of the straight welded pipe, comprising a car body consisting of a sweep template, a driving wheel, a stop block, a supporting plate, universal wheels and a guide bar which are connected with each other coaxially, and a rotary bearing, a driving motor, a control part, a steering engine, a position switch arranged on the two ends of one end of the car body, and a transformer bearing, a camera bearing, a sprayer bearing, a crossed yoke, an ultraviolet lamp bearing, and a water pump water tank bearing which are successively arranged on the top of the sweep template from left to right, wherein, the upper end of the stop block is fixedly connected with the two sides of the rear end of the sweep template bottom in parallel, the output end of the steering engine is fixedly connected with the universal wheels through the guide bar, the upper end of the rotary bearing is fixedly connected with the two sides of the rear end of the sweep template bottom in parallel, the lower end of the rotary bearing is fixedly connected with one end of the supporting plate, the other end of the supporting plate is fixed connected with the sweep template bottom, and output shaft of the driving motor is respectively connected with the two driving wheels fixedly. The invention can completely takes the place of manual work to carry out automatic magnetic particle testing, and has the advantages of compact structure and convenient operation.

The invention relates to a preparation method of a polyvinyl alcohol/ZIF-8 porous composite material, and belongs to the field of porous materials. Polyvinyl alcohol is used as a polymer material andis compounded with ZIF-8, and the polyvinyl alcohol/ZIF-8 porous composite material is prepared by adopting an ice template method and a freeze-drying technology. The preparation process is simple andis short in time and the ZIF-8 is uniformly dispersed. In the polyvinyl alcohol/ZIF-8 porous composite material prepared by an ice template method, ZIF-8 particles are adhered to a polyvinyl alcoholporous material skeleton with a macroporous structure; as the polyvinyl alcohol porous material has an open pore structure, the inherent pore structure of ZIF-8 particles cannot be blocked, and therefore the porous composite material with the large specific surface area can be prepared. ZIF-8 nano-particles with different specific surface areas can be prepared by changing the preparation method ofthe ZIF-8 nano-particles; meanwhile, the specific surface area of the porous composite material can be controlled by changing the mass ratio of the ZIF-8 particles to the polyvinyl alcohol.

The invention discloses a fruit and vegetable nutrition regulator, a preparation method thereof and a usage method thereof. The fruit and vegetable nutrition regulator comprises the following materials or elements in part by weight: 25 to 30 parts of Mg, 4 to 5 parts of B, 5 to 6 parts of Mn, 8 to 10*10<-2> parts of Mo, 2 to 5*10<-2> parts of SiO2, and 3 to 5*10<-2> parts of amino acid. The preparation method for the fruit and vegetable nutrition regulator comprises the following steps: mixing and hydrolyzing a mixture of compounds containing magnesium, boron, manganese and molybdenum elements respectively or simultaneously and a protein source, and then mixing the hydrolyzed product and silicon dioxide colloidal solution to form the fruit and vegetable nutrition regulator. The usage method for the fruit and vegetable nutrition regulator comprises foliar fertilization. The fertilizer makes up the blank of the field aiming at the properties of soil and the nutritional requirements of crops in the Pearl River Delta region; a final product of the fruit and vegetable nutrition regulator contains certain oily substances so that the fertilizer solution can effectively stay on the leaf surface and the defect of harming or blocking pores of leaves does not exist. The preparation method has the advantages of simple and convenient preparation process, low cost, high production efficiency and strong economic benefit, and is suitable for large-scale production.

The invention discloses a quick double-faced date and batch number printer which comprises a rack, a feeding part, printing parts, a discharging part and a motor. The printing parts comprise the upper printing part and the lower printing part which are of the same structure, the upper printing part comprises an upper lettering rotating shaft and an upper printing ink fixing shaft which is mounted on one side of the upper lettering rotating shaft, and the upper lettering rotating shaft is provided with a box walking wheel and a lettering assembly. The lettering assembly comprises a rubber letter nail, a letter nail clamping seat, a fixing shaft and a bearing, the bearing is detachably fixed on the lettering rotating shaft, the fixing shaft is provided with a buffer spring, one end of the fixing shaft is fixed on the bearing, the letter nail clamping seat is fixed at the other end of the fixing shaft, and the rubber letter nail is mounted on the letter nail clamping seat. The motor is in transmission connection with the printing parts, the feeding part and the discharging part. According to the quick double-faced date and batch number printer, batch numbers and dates can be printed on the upper face and the lower face of a packaging box at the same time in a printing ink stamped mode, the printing accuracy is high, the speed is high, and the effect is good.

The invention relates to a gas compressor impeller, which comprises a wheel disc, wherein the wheel disc is a circular disc, a shaft hole is formed in the center of the wheel disc, the center of one side of the wheel disc is provided with a shaft sleeve, the inner diameter of the shaft sleeve is identical to and corresponds to the diameter of the shaft hole formed in the wheel disc, the appearance of the shaft sleeve is in a horn shape, one end of a horn mouth of the shaft sleeve forms a whole with the wheel disc, and blades are uniformly distributed around the shaft sleeve. The gas compressor impeller is characterized in that the blades arranged on the end, far away from the wheel disc, of the shaft sleeve are arranged in a one-long-blade and one-short-blade alternate way, so that in the adjacent blades, one impeller is the long impeller, and the other impeller is the short impeller. When the gas compressor impeller is adopted, the fuel oil consumption can be reduced, and the occurrence of an overheat phenomenon of an engine is voided. The gas compressor impeller is applicable to an automobile engine supercharger.

The present invention is a method for realizing the transmission and reception of the synchronous data among different servers by utilizing a message service mechanism. In order to increase the performance of servers, the synchronous data is synchronized in batches, and when the connection with receiving servers fails, the data waiting to be synchronized is stored in a queue, so that the data can be retransmitted after reconnection, thus preventing the loss of all the data. In terms of synchronous number, synchronous time, etc., a corresponding regulation can be done according to the requirement of users. When being replaced with other database, if tables and fields are the same, the only job is to alter the database waiting for connection with configuration files and have a little modification, and after some experiment on the present invention, the efficiency is notably increased. Meanwhile, a user can conveniently and rapidly perform corresponding configurations according to own ideas, materializing the humanization of software. In terms of maintenance, the human power is saved, and the use is easy.

The invention relates to an artificial lawn free from sand stuffing and applied to a cage type football field. The artificial lawn comprises a lawn base layer, a back glue layer, straight filament tufted piles, and bended filament tufted piles, wherein the back glue layer is uniformly arranged on the back of a base cloth of the lawn in a coating manner; the straight filament tufted piles and the bended filament tufted piles are tufted on the lawn base layer in a machine-knitted manner; the back glue layer is fixed on the back of the lawn base layer in a manner of uniform coating and curing; and drainage holes are formed in a composite layer of the lawn base layer and the back glue layer. According to the artificial lawn disclosed by the invention, the situation that straight filaments in a straight filament tufted pile substance is erected can be guaranteed, and the situation that the artificial lawn has good cushioning property can be guaranteed; the fall damage prevention grade of the artificial lawn in the use process is improved, and the drainage property of the artificial lawn is guaranteed; and sand materials do not need to be stuffed in the use process of the artificial lawn; so that the cost is reduced, and the safety and the environmental protection of the production and the use of the artificial lawn can be guaranteed.

The invention discloses a high-temperature superconducting motor rotor low-temperature cooling system utilizing liquid hydrogen, and relates to the technical field of superconducting application low temperature. In the system, liquid hydrogen is stored in a liquid hydrogen storage tank to form a liquid section at the bottom and a gas section at the top, the liquid hydrogen of the liquid section istransmitted to a liquid hydrogen gasification cavity in an outer wall containing cavity of a high-temperature superconducting motor rotor in a communicating mode through a liquid hydrogen conveying pipe under the action of gravity to be subjected to heat exchange so as to achieve cooling, and hydrogen formed after liquid hydrogen gasification is transmitted back to the gas section of the liquid hydrogen storage tank through a hydrogen conveying pipeline to maintain the pressure in the liquid hydrogen storage tank so as to form a closed cycle. According to the system, liquid hydrogen is used as a low-temperature cooling medium so as to effectively maintain the temperature in the liquid hydrogen gasification cavity and meet the working temperature requirement of the superconducting magnet,and the system is driven by gravity, so that a circulating pump does not need to be additionally used, and the reliability of the system is improved.

The invention provides an integral primary drilling device for a solar mirror bracket. The integral primary drilling device comprises an equipment base, a drilling bracket combined unit, a mirror bracket bearing mechanism, a drilling power head and a positioning detection mechanism for detecting a drilling position. The integral primary drilling device is matched with all component units, so that the integral primary drilling precision of the solar mirror bracket is effectively enhanced and the drilling efficiency is improved.

The invention provides a heat source machine which comprises sensible heat recycling type and latent heat recycling type heat exchangers. The heat exchangers conduct heating through burner units formed by a plurality of rich lean burners arranged in parallel. Lean spray nozzles (63) facing lean flow inlets of the rich lean burners and rich spray nozzles (64) facing rich flow inlets of the rich lean burners are arranged on gas manifolds (6) used for providing gas for the burner units. Even when operation is stopped and high-humidity air in the latent heat recycling heat exchangers reversely flows and dews at the rich spray nozzles, pour burning caused by spray nozzle hole blockage can not happen. According to the heat source machine, partition walls (68) which partition lean gas chambers (66) used for providing gas for the lean spray nozzles (63) and rich gas chambers (67) used for providing gas for the rich spray nozzles (64) are arranged on the gas manifolds (6). One or more communicating parts (69) used for making each lean gas chamber and the corresponding rich gas chamber communicated is formed on the corresponding partition wall (68). Gas is provided for the rich gas chambers (67) from the lean gas chambers (66) through the communicating parts (69). In addition, the total area of openings of the communicating parts (69) is smaller than the total area of openings of spray nozzle holes of the rich spray nozzles (64).

The invention relates to a discharge roller system with automatically adjustable distance, which comprises a power source and a plurality of groups of discharge rollers and is characterized in that each group of discharge rollers comprise at least two electrode rollers, wherein the bearing positions of both ends of one electrode roller are fixed, and the roller is called a fixed electrode roller; the bearings of both ends of the other electrode roller are arranged in a slidable groove, and the roller is called a movable electrode roller; and the fixed electrode roller or the movable electrode roller is coated with insulating dielectric material, a high-frequency high-voltage power source is connected with the fixed electrode roller and the movable electrode roller, and the gap between the electrodes is automatically changed and adjusted along with the change of the thickness of thin-film material or textile fabric. The invention can treat the surfaces of various surface materials by the dielectric-barrier plasma discharge generated under atmospheric pressure.

A belt breakage hydraulic protection apparatus for a belt conveyor comprises multiple belt breakage hydraulic protection apparatuses equipped on the belt conveyor, corresponding multiple sensors, a control system composed of a terminal programmable controller and multiple sub-station PLC programmable controllers via advanced communication modules, and multiple hydraulic pump stations, wherein the electric control system can acquire and judge the belt breakage signals in time and send out instructions without resulting in mistaken braking actions, the actuating mechanism of the belt breakage hydraulic protection apparatus employs the oil pumps of hydraulic pump stations and multiple airbag type accumulators to transport high pressure oil to a pull-push oil cylinder, a rotary cylinder and a lifting cylinder, the cylinders drive a top-rising beam below the upper belt to rotate and an up-pressing beam above the upper belt to move up and down to press the broken upper belt; the lifting cylinder lift a lifting beam to move up and down to press the broken lower belt. The top-rising, up-pressing beam and lifting beam have a case type structure, and friction plates are disposed between the beams and the belt contact surface to get big brake force and obvious brake effect, so that the conveyor will not generate loading stop phenomenon and abrade the belt.

The invention discloses a data transmission method and apparatus, a readable medium and an electronic device. The method comprises the steps of subscribing a notification instruction transmitted by a cloud to an EMQ server; determining authentication information of the notification instruction; if the authentication information meets a preset condition, determining to upload data based on the notification instruction; and transmitting the uploaded data to the EMQ server, so that the cloud subscribes to the uploaded data in the EMQ server. According to the technical scheme provided by the invention, the data of the cloud end and the edge end is transmitted through the EMQ server, so that the data of the edge end is prevented from being directly uploaded to the cloud end, even if the data volume is relatively large, the condition of data blockage is avoided, and the cloud end and the edge end can select contents through the subscription mode of the EMQ server, and the data transmission efficiency is improved.