8results about How to "Eliminate uncertainty" patented technology

The present invention provides a hemodialysis concentrate and a preparation method thereof, belonging to the technical field of pharmaceutical preparations, the hemodialysis concentrate includes liquid A and liquid B; liquid A includes sodium chloride, potassium chloride, magnesium chloride, calcium chloride and citric acid; liquid B includes sodium bicarbonate; the method for preparing liquid A is: sodium chloride, potassium chloride, calcium chloride and magnesium chloride are added to dialysis water, and the feed is fed once, stirred evenly and then filtered in a circulation manner; after the quality inspection is qualified, citric acid is added for secondary feeding, pH=1.5~1.7 is controlled, stirred and circulated, and liquid A is obtained after the citric acid is tested and qualified; the method for preparing liquid B is: sodium bicarbonate is added to dialysis water, stirred evenly and then filtered in a circulation manner, and liquid B is obtained after the quality inspection is qualified. The present invention uses citric acid as the acid solution of liquid A, adopts secondary feeding when preparing liquid A, adjusts the addition order of the liquid preparation raw materials, and controls the temperature and pH value, so as to prepare a hemodialysis concentrate with high stability and strong quality and safety.

The invention belongs to the technical field of rock detection, and particularly discloses a nondestructive determination method for rock damage degree in an acidic water environment and a storage medium. The determination method comprises the following steps: collecting a plurality of target rock samples, screening qualified rock samples by adopting an ultrasonic speed meter, and marking; dehydrating and drying the qualified rock sample, and measuring and recording the dry density rho 0 of the dehydrated and dried rock sample; extracting at least three dehydrated and dried rock samples, carrying out a compression test, and calculating an elastic modulus average value E0 and a Poisson's ratio average value v0; standing and soaking the dehydrated and dried rock samples in an acid solution; after the rock sample is soaked for a preset time, taking out the rock sample, cleaning the acid solution on the surface, then dehydrating and drying the soaked rock sample, and measuring the dry density rho t after erosion; and establishing a rock mass damage rate eta model by combining data before and after erosion. According to the method, the damage degree is comprehensively reflected by measuring the physical and mechanical parameter change of the rock sample, the rock sample does not need to be damaged, uncertain factors in the test process are eliminated, and the data processing amount is small.

The invention relates to a tunnel secondary lining concrete filling state real-time monitoring system which is characterized in that a secondary lining cavity is defined by a secondary lining template in a tunnel, the system comprises a sensor array located in the secondary lining cavity, the sensor array comprises a plurality of rows of optoelectronic switches distributed in the extending direction of the tunnel, and the optoelectronic switches in the same row are distributed in the circumferential direction of the tunnel; the signal processing and acquisition unit is responsible for supplying power to the photoelectric switch and converting the received signal of the photoelectric switch into a signal displayed by a display; and the data processing and displaying unit is responsible for displaying the signals transmitted by the signal processing and collecting unit on a reality device. The invention aims to provide the tunnel secondary lining concrete filling state real-time monitoring system capable of acquiring the cavity in real time, and the problem that the existing cavity can only be acquired afterwards is solved.

The present invention relates to the technical field of orthopedic research models, specifically a rabbit patellar subluxation surgical auxiliary device, including a base and a supine platform with an adjustable angle connected above the base, a patellar subluxation mechanism is arranged above the rear end of the supine platform, a circular ring is arranged in the middle of the rear end of the supine platform, and the two sides of the circular ring are rotatably connected with a support rod, and the patellar subluxation mechanism includes an L-shaped telescopic rod, and the outer end of the vertical section of the telescopic rod is threadedly connected with a rotating handle, and the other end of the rotating handle is bonded with a Y-shaped push head. The present invention fixes the rabbit supinely on the supine platform, and ties the legs tightly to the support rod, moves the patellar subluxation device to the knee to fix it, and then rotates the rotating handle to squeeze the rabbit patella to make it subluxed, thereby achieving the purpose of patellar subluxation. The function of this device is to fix the patellar subluxation position, which is conducive to surgical suture fixing position and assisting the patellar subluxation operation.

The invention provides an abnormal event root cause positioning method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring time sequence monitoring data of a target business index; performing anomaly detection based on the time sequence monitoring data to determine a time window of an abnormal event; obtaining multi-dimensional business feature data corresponding to the time window; performing causal analysis on the multi-dimensional business feature data to screen a candidate dimension subset having potential causal association with the abnormal event from a plurality of dimensions; performing contribution degree analysis on dimensions in the candidate dimension subset to quantify contribution values of the dimensions to the abnormal event of the target business index in the time window; and determining a core root cause dimension causing the abnormal event according to the contribution value. Therefore, the root cause positioning efficiency and the result reliability are improved.

An automatic hydrogen sulfide gas supply device is suitable for supplying hydrogen sulfide gas to CVD grown zinc sulfide blocks. The automatic hydrogen sulfide gas supply device comprises a basic steel cylinder module, a standby steel cylinder module, an anti-explosion heating fan, a hydrogen sulfide gas supply main line and a control cabinet. The basic steel cylinder module comprises n panel groups, n is greater than or equal to 2, the standby steel cylinder module comprises one panel group, the one panel group is defined as the (n + 1) th panel group, each panel group comprises m panels, m is greater than or equal to 2, each panel comprises a hydrogen sulfide steel cylinder, the hydrogen sulfide steel cylinder is filled with hydrogen sulfide liquefied gas, and m is greater than or equal to 2. Each panel group is used for supplying hydrogen sulfide gas formed by vaporization of liquefied hydrogen sulfide of the hydrogen sulfide steel cylinders to the hydrogen sulfide gas supply main line at the same time by all panels of the panel group when gas supply is executed, and the anti-explosion heating fan is used for heating and controlling the temperature of the hydrogen sulfide steel cylinders of all the panel groups; and the control cabinet is connected to the hydrogen sulfide gas supply main line and is in communication connection with and controls the basic steel cylinder module, the standby steel cylinder module and the anti-explosion heating fan.

The application provides a bidirectional fault detection method, system, device and readable storage medium, the method comprises the following steps: determining whether the received message is a BFD control message based on the access control list rule issued by the central processor; if the received message is a BFD control message, the BFD control message is sent to the hardware operation management maintenance engine, and the BFD session information corresponding to the BFD control message is acquired based on the hardware operation management maintenance engine to detect the connectivity of the BFD control message; if the received message is not a BFD control message, the received message is sent to the central processor. Compared with the prior art, the application avoids excessive consumption of CPU resources caused by the increase in the number of BFD sessions or the shortening of the detection period. On the other hand, the hardware processing of the BFD service eliminates the uncertainty factors on the software processing path, can realize better timing accuracy, and improves the reliability of detection and the network convergence speed.

This invention discloses a multi-degree-of-freedom control system based on surface micro-electrical signals, comprising: an electromyography (EMG) signal acquisition module for acquiring surface EMG signals; a signal preprocessing module for preprocessing the acquired EMG signals; a feature extraction module for calculating the optimal parameters of multi-scale permutation entropy using a particle swarm optimization algorithm for the preprocessed signals; and based on the optimal parameters, performing multi-scale permutation entropy feature extraction on the preprocessed EMG signals to obtain feature data of the EMG signals; a signal classification module for classifying the EMG signals according to the feature dataset; and a feature matching module for matching the classified signals with preset actions. This invention solves the problem of limited application scenarios and efficiency of existing surface EMG signal-controlled robotic arms, which is caused by the low degree of freedom of the robotic arm.