100results about How to "Easy to trace" patented technology

The invention provides a multi-type storage cluster dynamic nano-management method based on a cloud platform, and belongs to the technical field of cloud platform storage resource management, a storage pool is used as a minimum management unit, a configuration center provides a unified nano-management entrance and is associated with a platform initialization process, and initialization of standardized parameters such as a storage cluster IP, an account and the like is automatically completed; after management, block storage, file storage or object storage types and exclusive parameters thereof are configured for the storage pool according to business requirements, and available storage pools are screened according to binding relations when storage services are created, so that resource mismatching is avoided. Bidirectional synchronization is carried out between the operation and maintenance resource management module and the storage module through a full life cycle by using an equipment SN number, so that state consistency and traceability are realized; expansion of newly added storage pools, unbinding of the storage pools and resource recovery are supported, and the resource utilization rate and the operation and maintenance efficiency are improved.

The invention relates to the technical field of knowledge management, in particular to a cardiovascular special nursing knowledge management and intelligent auxiliary method and system. The method comprises the following steps: acquiring and storing cardiovascular specialized nursing original knowledge data, executing text analysis and semantic processing, and generating a structured cardiovascular specialized nursing knowledge entry set; performing parameter analysis and weighted matching in combination with nursing demand information or patient characteristic parameters, and screening target nursing knowledge entries; and completing content combination and slot filling based on a preset nursing template, generating individualized cardiovascular specialized nursing guidance information, recording a nursing knowledge calling process and a generation result, and forming nursing behavior record data. According to the method, the accuracy and the individuation degree of calling the cardiovascular special nursing knowledge and the scientificity, the normalization and the intelligent level of nursing decision are improved.

The utility model discloses a total moisture testing system which comprises a transfer module, a division module, a drying oven weighing module, a rejected sample recycling module, a sample bottle receiving, sending and storing module and a control assembly, the division module is used for dividing a sample in a sample bottle into a test sample and a prepared sample, loading the test sample into a tray, and loading the prepared sample into a bottle; the oven weighing module is used for temporarily storing a sample tray and drying and weighing the sample tray filled with a test sample, and the test sample subjected to constant weight treatment is changed into a rejected sample; the discarded sample recovery module is used for recovering discarded samples and cleaning sample plates; the sample bottle receiving, sending and storing module is used for receiving, sending and storing sample bottles filled with original samples and prepared samples; the transfer module is used for transferring the sample bottles and the sample trays among the stations; the control assembly is used for controlling all the modules to work. The total moisture testing system disclosed by the utility model has the advantages of high automation degree, high testing efficiency, convenience in sample preparation and high testing accuracy.

The invention discloses a rapid sterile detection method and kit based on a 16S / 18S rRNA-cDNA digital PCR technology, and the method comprises the following steps: S1, extracting total RNA in a to-be-detected sample to obtain bacteria 16S rRNA and fungi 18S rRNA; s2, carrying out reverse transcription on the bacterium 16S rRNA and the fungus 18S rRNA to obtain a stable cDNA (complementary deoxyribonucleic acid) fragment; and S3, carrying out digital PCR amplification by taking the cDNA fragment as a template, and judging whether bacterial contamination exists or not according to an amplification result so as to realize rapid sterile detection. According to the characteristics of high conservative and high copy of bacteria 16S rRNA / fungi 18S rRNA, 30 sets of universal primer probe combinations are verified, and gt can be covered by selecting the optimal two sets of primer probe combinations; 99.99% of common pollution bacteria / fungi in clinic and pharmacy, and no cross amplification with mitochondrial rRNA of mammals such as human, hamster, cattle and the like.

The utility model discloses aluminum plate marking equipment which comprises a positioning table, a positioning mechanism, a first marking mechanism and a second marking mechanism. The positioning table is provided with a marking area, and the first marking mechanism and the second marking mechanism are arranged on the two perpendicular edges of the marking area respectively and are opposite to the marking area. The positioning mechanism is provided with a first positioning assembly and a second positioning assembly, wherein the moving directions of the first positioning assembly and the second positioning assembly are perpendicular to each other. The first positioning assembly and the second positioning assembly are arranged on the other two perpendicular edge portions of the marking area respectively. According to the utility model, cross marks can be marked at the three corners of the aluminum plate to serve as CCD positioning points in the subsequent process, and traceability codes can be marked on the aluminum plate so that the aluminum plate can be traced to the source.

The invention discloses a high-acidity complex flow state multi-parameter on-line monitoring system, an acid mixing vehicle and a method.The system comprises an acid mixing tank, the acid mixing tank is communicated with a powder pipeline, an acid pipeline, a clear water pipeline, a liquid medicine pipeline and a discharge pipeline, and the powder pipeline, the acid pipeline, the clear water pipeline, the liquid medicine pipeline and the discharge pipeline are all provided with monitoring devices; and the monitoring device is electrically connected with the intelligent control system. The device can record the instantaneous quantity and the cumulant quantity of the acid liquor, the clear water and the chemical additive on line in real time, generate an operation curve and a report at the same time, and can monitor the viscosity, the density and the acidity of the prepared acid liquor on line so as to confirm whether the quality of the acid liquor is qualified or not. According to the invention, monitoring data can be archived, later review and tracing are facilitated, manual sampling analysis is not needed, and potential safety hazards are eliminated.

The application relates to the technical field of circuit breaker detection, and specifically discloses a circuit breaker action characteristic detection system based on artificial intelligence, which comprises a data acquisition layer, a data preprocessing layer, a data analysis layer, a decision warning layer and a system management layer; the data acquisition layer is responsible for collecting the action characteristic parameters of the circuit breaker. Through filtering, normalization and feature extraction, the data quality and availability are improved, laying a foundation for subsequent analysis; the data analysis layer uses comprehensive calculation and analysis to evaluate multidimensional parameters in mechanical action, obtains a mechanical action state evaluation coefficient, and accurately grasps the operation state of the circuit breaker; the decision warning layer accurately determines the operation state and timely warns according to the evaluation result and a threshold value, helping operation and maintenance personnel to quickly respond; and the system management layer is used for dynamically optimizing a feedback determination threshold value, so that the overall scheme effectively improves the accuracy, reliability and intelligent level of circuit breaker detection, reduces fault risks, and guarantees the safe and stable operation of a power system.

This invention provides a depth mapping calibration method and system based on liquid lens control parameters, belonging to the field of optical measurement calibration technology. The calibration method includes: acquiring calibration points at multiple known depth locations corresponding to the liquid lens control parameters and depth locations; preprocessing the calibration points; establishing a bidirectional mapping relationship between the control parameters and depth locations using a monotonically holding piecewise interpolation fitting algorithm (preferably PCHIP); and saving the calibration configuration. This invention solves the depth measurement accuracy problem caused by the nonlinear response of the liquid lens, achieving scan control with equal physical depth steps through precise calibration mapping, thus improving the accuracy and stability of depth-focused three-dimensional measurement. The method has a simple calibration process, is suitable for rapid on-site calibration, and its unified configuration management facilitates traceability.

The utility model discloses a washing test machine for simulating washable ultraviolet-proof fabric, and particularly relates to the technical field of fabric detection, the washing test machine comprises a case, a partition plate is arranged in the case, a washing bin is arranged on one side of the partition plate, a machine bin is arranged on the other side of the partition plate, a containing assembly is mounted on the partition plate, and the containing assembly is arranged on the machine bin. A heating plate is arranged at the bottom end of the interior of the washing bin and connected with a heater arranged in the machine bin, a temperature sensor is installed in the middle of one side of the partition plate, a water level sensor is arranged above the temperature sensor, a water inlet is formed in the partition plate and connected with a water pump arranged in the machine bin, and a water outlet is formed in the water pump. A water drainage pipe is arranged at the bottom of the washing bin, supporting legs are installed at the bottom end of the machine box, an upper cover is hinged to the top end of the machine box, a lock catch is arranged between the upper cover and the machine box in a matched mode, and a sealing gasket is arranged at the connecting position of the upper cover and the top face of the washing bin. The water washing device has the advantages of being capable of improving the water washing effect, convenient to operate and observe, stable in water flow and capable of improving the detection efficiency.

This invention relates to the field of containerized deployment technology, specifically providing a Docker-based image management and update method and system. It packages middleware involved in the application system into an image and builds an automated mechanism. When critical files within the application system change, it automatically initiates the image building and compilation process according to the Dockerfile, generating the latest Docker image and pushing it to a designated image repository. Specifically, it includes: a file monitoring module responsible for real-time monitoring of changes to critical files within the application system; an image building triggering module receiving file change events sent by the file monitoring module and determining whether to trigger the image building process based on preset rules; an image building and compilation module building the Docker image locally according to the execution instructions in the Dockerfile; and an image push module pushing the built and compiled Docker image to the designated image repository. Compared with existing technologies, this invention enables efficient deployment and automated updates of application systems.

The application relates to the technical field of mobile terminal automatic testing, in particular to a mobile terminal full-scene automatic testing system based on AI visual identification and a testing method thereof, which comprises a backend control layer, an automatic driving layer, an AI visual identification layer, a time execution layer, a cross-platform adaptation layer and a tool support layer. The application reduces the dependence on UI element IDs in the mode of AI visual identification, does not need to modify scripts in iteration, can directly realize version control, improves the maintenance and testing efficiency, and has high positioning accuracy and compatibility.

The invention discloses a simulated load benchmarking detection system of a motor stator, and relates to the technical field of motor detection. Comprising a standard data establishment unit, a simulation load application unit, a data acquisition and comparison unit, a qualification judgment unit, an image acquisition and preprocessing unit, an image analysis unit, a classification output module, a stator assembly processing unit and a system self-inspection unit. According to the method, a general and directional dual-mode standard database is constructed, a set of specific series of motor stators and multi-power stator standard data are covered, directional data can be generated based on standard samples during batch detection, data can be periodically verified and updated, new specification standards can be expanded, full-process automation is achieved, and the detection efficiency is improved. The machine type and welding spot defects are automatically recognized through image acquisition and analysis, the simulation load unit automatically adapts to parameters and monitors a loop, the data acquisition and comparison unit synchronously acquires data and calculates deviation, stable operation is guaranteed through system self-inspection, and detection compatibility, precision and traceability are improved.

The invention discloses a fault root cause positioning method, apparatus and device, and a readable storage medium. The method comprises the steps of determining a multi-source abnormal feature; obtaining a domain knowledge graph; retrieving an analysis basis from the domain knowledge graph; performing root cause tracing by using the preliminary screening layer in combination with an analysis basis, and generating a root cause reasoning process and a reasoning complex score; when the reasoning complex score is lower than a complex threshold value, generating a root cause analysis report by using a conclusion generation layer; when the reasoning complex score is not lower than a complex threshold value, a depth reasoning layer is called to carry out depth causal reasoning, and a reasoning thought and a root cause propagation path are generated; and generating a root cause analysis report based on the reasoning thought and the root cause propagation path by using a conclusion generation layer. Visibly, according to the invention, through a hierarchical reasoning architecture and a domain knowledge graph, reasoning ideas of faults with different difficulty can be clearly presented while the reasoning efficiency and the fault root cause positioning rate are improved, and the credibility and verifiability of various fault root cause positioning conclusions are improved.

The utility model discloses a kind of citric acid fermentation fine filter devices, belong to citric acid production technical field.Device is composed of fermentation unit and fine filter unit: fermentation unit contains seed tank and fermentation tank, the feed inlet of seed tank is connected with syrup turbid liquid pipe, the feed inlet of fermentation tank is connected with syrup clear liquid pipe and syrup turbid liquid pipe, seed tank and fermentation tank are configured with steam, compressed air, defoaming agent, emptying and circulating water pipeline.Fine filter unit first removes most solid impurities with primary plate-and-frame filtration, then ceramic membrane fine filtration and anion and cation exchange impurity removal.Two-stage filter-pressing acid residue is dried after being thickened and then filter-pressing to be feed, and two-stage filtrate respectively enters subsequent process.The device can greatly reduce labor cost and failure rate, improve citric acid purity and yield, and meet the needs of large-scale, high-quality and green production.

The invention relates to the technical field of power system relay protection, and provides a line protection multiplexing channel short-time interruption monitoring method and a computer storage medium. The method comprises the steps of obtaining a home terminal recording file and an opposite terminal recording file in response to a received protection starting signal, and determining whether a line protection multiplexing channel is in a connected state in a first time period or not according to the home terminal recording file and the opposite terminal recording file; and if the line protection multiplexing channel is in the connected state in the first time period and has short interruption in the second time period, determining whether the line protection multiplexing channel is in the connected state in the third time period. If the circuit protection device is in the connected state in the third time period, prompt information is generated, and the prompt information is used for representing that short-time interruption of the circuit protection multiplexing channel exists in a setting circuit corresponding to the circuit protection device at the protection starting moment. According to the invention, the short-time interruption of the line protection multiplexing channel can be monitored and identified, and the operation safety of a power system is improved.

This invention relates to the field of welding technology and discloses a method for linkage between a welding robot and the positioning simulation of injection molded parts, comprising the following steps: Step 1: Constructing a dual-camera vision positioning system with a resolution of 4K and a positioning accuracy of ±0.05mm. After pre-processing and cleaning the injection molded part, it is placed on a positioning worktable. Image data of three preset feature holes on the injection molded part are simultaneously acquired by the dual cameras. The diameter of the holes is 5mm and the positional tolerance is ±0.1mm. Step 2: Performing grayscale enhancement and edge extraction processing on the acquired image data to accurately identify the center coordinates of the three feature holes. Combining the dual-camera calibration parameters, the translational deviation and rotational angle deviation of the injection molded part in the X and Y axes are calculated to generate a complete positioning deviation dataset. Step 3: Selecting RobotStudio simulation software. This invention achieves precise positioning: the 4K dual-camera vision system combined with a weighted iterative algorithm achieves a positioning accuracy of ±0.05mm, effectively avoiding glare interference and accurately capturing the deviation data of the injection molded part.

The application discloses a kind of detection system of quick nondestructive testing fabric density, including size comparison module, platform module, image acquisition module, processing module;Platform module is fixed to be detected object and cooperates size comparison module to form the object to be detected that can be used for real-time detection, image acquisition module acquires corresponding image information and real-time backup storage data according to operator target detection position, and the original data after backup is transferred to processing module, and processing module calculates the fabric density of the object to be detected in specified range according to the space layer conversion of fiber, the application further discloses a kind of detection method of application detection system.Relative to prior art, the technical scheme of the present application has the advantages of being convenient, real-time and traceable, etc.The application not only has the advantages of being fast and convenient and not damaging the fabric, but also the data can be traced back and reproduced well, and has important application prospects in the field of textile fiber detection.

A multi-channel integrated device testing system and method includes hardware devices and a PC testing tool. The hardware devices include a USB interface, a wired network interface, a wireless communication module, a Bluetooth module, I / O ports, buttons, and a solid-state system. The USB interface, wired network interface, wireless communication module, Bluetooth module, I / O ports, and buttons are used to establish electrical connections and data interaction paths with a development board. The solid-state system runs on the development board and controls each interface through a driver program, completing the overall functions of signal acquisition, data communication, and peripheral management. The PC testing tool includes a connection management module, a device discovery module, a test execution module, a result processing module, a status configuration module, and a Bluetooth interaction module. This system supports multiple connection methods, integrated testing functions, precise device selection, flexible configuration of judgment criteria, and deep Bluetooth testing capabilities, enabling efficient and stable automated device testing.

The application discloses a kind of distributed DTU station based on linear interpolation method terminal system, including multiple interval units and a public unit;Interval unit gathers and sends to public unit with original sampling time label carrying bus voltage sampling sequence and feeder current sampling sequence;Public unit includes event determination module, time difference calculation module and data synchronization reconstruction module;Event determination module identifies the local switching event time of capacitor switching in each interval unit;Time difference calculation module calculates the time alignment offset of each interval unit according to local switching event time;Data synchronization reconstruction module uses time alignment offset to shift the original sampling time label of each interval unit, and executes linear interpolation when any interval unit is missing data at a certain time position of sampling point total set.

The application relates to a document processing method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring audio data in a demonstration scene; acquiring document content of a demonstration document in the demonstration scene; determining a target document content block corresponding to the audio data in the document content; identifying an operation instruction for the target document content block from the audio data; and performing document processing for the target document content block in the demonstration document according to the operation instruction. Thus, the information assets generated in the discussion process can be deposited in the form of document processing to the demonstration document itself, without the need for the user to manually record or separately arrange after the discussion, thereby reducing the threshold of information recording and transmission, reducing information omission or deviation caused by manual operation, and improving the overall efficiency and accuracy of information from oral discussion to document landing.

The present application relates to the field of industrial automation control, and specifically provides a programmable logic controller program automatic acquisition method, a storage medium and an electronic device, aiming at solving the problem that multiple types of processor programs cannot be automatically collected. To this end, the acquisition method of the present application comprises: acquiring the type of central processing unit contained in the programmable logic controller; the type includes a standard central processing unit and a fail-safe central processing unit; according to the type, determining the program upload mode of the programmable logic controller; according to the program upload mode, uploading the program of the programmable logic controller. The present application can realize compatible collection of standard central processing unit and fail-safe central processing unit device programs, and reduce the labor cost and time cost of industrial device program operation and maintenance.

The invention discloses an anodic oxide film detection system which comprises a conveying module, a preprocessing module, a multi-dimensional detection module, a data processing module, a sorting module and a central control module. The conveying module is used for conveying an anodic oxide film workpiece to be detected to each functional module according to a preset speed and path; the pretreatment module is arranged on a conveying path of the conveying module and is used for cleaning and drying the surface of a to-be-detected workpiece; and the multi-dimensional detection module is arranged on the conveying path behind the preprocessing module and is used for carrying out multi-parameter detection on the preprocessed workpieces. According to the anodic oxide film detection system disclosed by the invention, the problems of low detection efficiency, poor detection precision, single detection parameter, insufficient pretreatment, weak data processing capability, low sorting efficiency and the like in anodic oxide film detection in the prior art are solved.

The utility model discloses a V type bending machine, it is in solving the low bending precision of existing equipment, the problem of pressure can not monitor and poor adaptability, including frame, electric jar, pressure sensor, pressure head, pressure seat and pressure gauge, electric jar is fixed in frame through support, and its telescopic end is vertical and downward, and pressure sensor and pressure head are connected in proper order, and the bottom side of pressure head is equipped with V type convex, and pressure seat is opposite to pressure head, and is equipped with the matching V type groove, and both sides are equipped with positioning groove and positioning block, and are respectively used for product horizontal limit and end limit, and pressure gauge is connected with pressure sensor, and can display and store pressure information. The support is equipped with slide rail assembly and L type connecting seat, guarantees that pressure head moves stably, and pressure head and connecting seat, pressure seat and frame all are detachable connection through bolt. The utility model discloses through electric jar accurate drive, real -time monitoring and positioning optimization of pressure, improves bending precision and product quality, and the adaptability is strong, and it is convenient to maintain.

This utility model relates to the field of casting technology and discloses a device for quickly identifying the flow sequence of a cast billet. The device includes a billet exit section vision system, a flow sequence binding module, and a fixed numbering unit. The billet exit section vision system is installed above the post-cutting conveyor roller (1) and the steel transfer machine (2) to capture the number and position of the cast billet (3) in real time. The flow sequence binding module is configured to associate the number of the cast billet (3) with the flow sequence information through an image processing server and transmit it to the display screen (4) for real-time display. The fixed numbering unit is configured to communicate with the flow sequence binding module and spray numbers onto the cast billet (3) after it has been collected and unloaded according to the binding information. This device for quickly identifying the flow sequence of a cast billet simplifies roller operation, improves work efficiency, realizes the identification of flow sequence information, and makes product traceability more convenient and accurate.

The invention discloses a novel metropolitan area network new network access equipment detection rule flexible configuration method and device, and the method comprises the steps: defining full basic elements in a database, including detection items, network access detection links and network access detection link classification, and building an incidence relation between the network access detection link classification and the network access detection links, configuring a network access detection group and a network access detection rule through page operation; after a single device is input through the page, setting the receiving and managing state of the device as a to-be-received and managed state by default, automatically matching a corresponding network access detection rule according to the attribute of the device, and performing detection step by step according to the levels of network access detection links, network access detection groups and detection items; and displaying the detection detail data of the equipment in a layered manner through the page. According to the method and the device, through the whole-process design of standardized configuration, automatic execution and visual display, high efficiency, standardization and controllability of network access equipment detection are realized, and meanwhile, the strict requirement of equipment access management is met.

The invention discloses a bone mineral density detection method and device based on a CT image and a storage medium, and relates to the technical field of medical image data processing. The method comprises the following steps: firstly, acquiring a scanning data sequence of a plain-scan CT covering a target vertebral body; and delineating the region of interest of the cancellous bone on a plurality of parallel layers of the same target vertebral body to reduce the influence of interference factors. Linear transformation is carried out according to the scanning data sequence, the HU value of each pixel in the region of interest is converted pixel by pixel, and the CT mean value of the target vertebral body is obtained based on the HU values. And then determining a relative bone mineral density index of the target vertebral body based on the CT mean value by taking a preset reference value as a benchmark. And finally, based on the relative bone mineral density index, performing bone mineral density grading according to a set threshold value to obtain an evaluation result corresponding to each target vertebral body. Therefore, the bone mineral density detection method is simple in process, low in cost and universal.

This invention discloses a mining vehicle dispatching system and method, belonging to the field of mining transportation dispatching technology. It includes a perception layer, a decision-making layer, an execution layer, and an interaction layer. The perception layer accurately acquires multi-source key information about vehicles and excavators and uploads this information to the decision-making layer. The decision-making layer, connected to the perception layer, constructs a vehicle-excavator digital twin mapping through data fusion, executes the tiered cyclic charging rules for electric mining trucks, and makes loading point decisions based on multi-dimensional cost modeling, generating dispatching instructions. The execution layer, connected to the decision-making layer, transmits dispatching instructions in real-time via hierarchical voice and feeds back the execution status to the decision-making layer. The interaction layer, connected to the decision-making layer, centrally displays vehicle status and dispatching progress, and supports switching from automatic dispatching mode to manual dispatching mode under triggered conditions, with manual dispatching instructions having higher priority than automatic dispatching instructions. This invention achieves efficient and accurate mining transportation dispatching.

The invention discloses a geophysical prospecting, surveying and mapping collaborative inspection method and system for safety-related geological defects of a subway structure, and particularly relates to the technical field of subway engineering safety detection, and the method comprises the five steps of early-stage preprocessing and detection area division, multi-source collaborative detection, detection data fusion and mapping, collaborative inspection, and dynamic updating and operation and maintenance adaptation. Gravity exploration is taken as a core, multiple detection means are fused, the weight of gravity data is enhanced in combination with an improved BP neural network model, the result is ensured to be reliable through a triple inspection mechanism, and a whole-process closed-loop process is constructed; the system comprises a main control module and five functional modules, and is accurately matched with the steps of the method, so that integrated cooperative operation is realized. The method improves the detection precision of geological defects and earthquake susceptible structures, reduces the manual error and operation and maintenance cost, is suitable for the full-stage application of a subway, provides precise data support for the safety prevention and control of a subway structure, and is remarkable in practicability and application value.

The invention discloses a vehicle mobile phone volume change track detection method, device and equipment and a storage medium. According to the method, a Python automation script is used for controlling terminal equipment to execute a sound detection process, a target sound source is automatically triggered, a volume gear is adjusted, a sound scene is switched, and an operation environment is provided for sound data collection; according to an operation environment, a browser sound collection interface is synchronously called to capture physical parameters of loudspeaker sound of terminal equipment in real time, original collection data are obtained, the original collection data are calibrated and filtered, standardized sound data are generated, and the standardized sound data are displayed in real time through a visual interface. And after the detection is completed, the full-amount detection data is automatically packaged and stored according to the preset format, so that the full-automatic operation of the volume change track detection of the vehicle-mounted terminal and the mobile phone can be realized, the detection efficiency is remarkably improved, the subjective error of manual operation is eliminated, the environmental noise interference is effectively overcome, and the objectivity and accuracy of the detection data are ensured.

This application relates to a sensor-based method and system for evaluating the quality of lubricating oil samples. The method includes: acquiring intermediate product quality characteristic information from multiple key processing stages in the production of recycled lubricating oil, wherein the key processing stages include at least a deep dehydration stage, a vacuum distillation stage, a combined refining stage, and a final blending stage; importing the quality characteristic information into preset judgment and processing rules for analysis, and evaluating the quality status of the intermediate products at each of the key processing stages based on the analysis results, wherein the judgment and processing rules define the acceptable range, warning range, and unacceptable range of the quality characteristics; when the analysis results indicate that the quality status of the intermediate product deviates from the acceptable range, generating warning information and generating suggestions for adjusting process parameters. This invention achieves real-time feedback on the quality of multiple key processing stages of recycled lubricating oil, ultimately achieving stable quality of recycled lubricating oil products.