34results about How to "Learn about changes" patented technology

The invention relates to a system for detecting settlement and damage of a manhole cover by using sensor data generated by rolling by a vehicle. The system comprises a data collection terminal, an operation service management platform and a user terminal. The data collection terminal is arranged at the manhole cover for collecting the generated acceleration data and / or state data generated by rolling of a manhole cover by a vehicle, and sending the acceleration data and / or state data to an operational service management platform. The operational service management platform is used to determinethe settlement of the manhole cover based on the acceleration data, and / or to determine the damage of the manhole cover according to the state data, and to send alarm information and task work orderinformation to the user terminal when it is determined that the manhole cover is settled or damaged; and the user terminal is configured to receive, display and feed back the alarm information and thetask work order information. The system can employ the sensing data generated by rolling by a vehicle to monitor the settlement and damaging conditions of the manhole cover to allow municipal management personnel to timely and accurately grasp the working state of the manhole cover and reduce the inspection work intensity of the manhole cover maintenance personnel.

The invention provides an in-vitro application of peptide which is used for regulating the cow rumen fermentation and a detection method thereof. The method can exactly detect the influence of peptide on the rumen fermentation parameters such as gas production, pH value, ammoniacal nitrogen value, volatile fatty acid and MCP index which are importance indexes for the rumen fermentation. The detailed situation of fermentation in the active rumen can be directly known by the detection; furthermore, the influence of the peptide on the microorganism enzyme activity can be exactly measured; amylase, proteolytic enzyme and carboxymethyl cellulose activity are main enzyme activity indexes in the rumen; the change of microorganism in the active rumen can be directly known by the detection of the three enzymes. The method has the advantages of convenience, being easy for learning, simple and convenient operation, high repeatability, exact numerical value and strong simulation verisimilitude, can effectively determine the approximate consistency which is suitable for peptide in the rumen of cow, and can give out scientific basis and theoretical guidance for deeper theoretic research, preparing the daily ration for the cow more exactly, reducing the waste of protein feeds and improving the quality of the milk products in the future.

The invention discloses a data rollback method, electronic equipment, and a storage medium. The method includes: obtaining the name of a data tree selected by a user fed back by a front-end page, searching for and displaying each node contained in the data tree; receiving the user-triggered For the query operation of the operation history information of any node, query and display the operation history information of the node from the second database; according to the rollback operation of any operation history information triggered by the user, use the operation history information to update the node. Use the second database to save the operation history information of the node, which is convenient for users to quickly query the various operation history of the node, understand the change of the node data information, and correct the data information of the node in time according to the operation history information, and correct the error in time. Various problems arising from operation, etc.