Abstract: A power device with a protection circuit is provided. The power device includes a power module, a power output terminal, a converter module, a bus capacitor, and a protection circuit. The power module receives an input power. The converter module, the protection circuit, and the bus capacitor is electrically connected between the power module and the power output terminal. The protection circuit is configured for overvoltage protection when the input power being overvoltage, suppressing the surge current when booting up the power device, and regulating the voltage on the bus capacitor under overvoltage and undervoltage conditions.

Abstract: A method for dynamically assessing slope safety includes the following steps: S1, carrying out geologic model generalization to the slope according to slope type, slope structure, stratum characteristics and a deformation failure mode to obtain a slope geologic model, creating a slope geometric model according to the slope geologic model, carrying out the subdivision of computational grid, and selecting a reasonable numerical simulation method, mechanical constitutive and initial boundary value conditions to form a computational model; and S2, adjusting stratum parameters, structural plane parameters and activating factor strength based on the computational model, carrying out a large amount of numerical simulation, summarizing results of the numerical simulation, normalizing input quantities and output quantities to establish machine learning samples.

Abstract: A virtual disk migration method, apparatus and device, and a readable storage medium. Said method comprises: when a data change occurs in a cluster, updating the label of the cluster in a binary table to a first target value (S101); copying data in the cluster to a second data center, and updating the first target value to a second target value (S102); and upon reception of an instruction for migrating a virtual machine to the second data center (S103), controlling the virtual machine to stop operating, querying the first target value in the binary table, and migrating data in the cluster corresponding to the queried first target value to the second data center (S104). A part of data is copied to a second data center in advance on the basis of a binary table, and when a virtual machine is migrated, only the other part of data needs to be migrated, thereby reducing the data migration amount and migration time, and improving the migration efficiency of a virtual disk and a virtual machine.

Abstract: Disclosed is a rotational flow rotation deoiling method for oil-based mud rock debris.

Abstract: A power device with a protection circuit is provided. The power device includes a power module, a power output terminal, a converter module, a bus capacitor, and a protection circuit. The power module receives an input power. The converter module, the protection circuit, and the bus capacitor is electrically connected between the power module and the power output terminal. The protection circuit is configured for overvoltage protection when the input power being overvoltage, suppressing the surge current when booting up the power device, and regulating the voltage on the bus capacitor under overvoltage and undervoltage conditions.

Abstract: The present disclosure provides a motor, a water divider, and a dishwasher with the water divider. The motor includes: a housing, accommodating a coil assembly; a lead portion, electrically connected to the coil assembly and configured to be electrically connected to an external connector; a terminal connecting device, connected to the housing and configured to receive the lead portion and the external connector and electrically connect the lead portion to the external connector; and an isolation component, fixed to the terminal connecting device and enclosing a live part of the lead portion together with the terminal connecting device, and the terminal connecting device and the isolation component are both made from a flame-retardant material.

Abstract: The present disclosure provides a poly(spirobifluorene) having a structure represented by Formula (I). In the present disclosure, a polymer containing carbazolyl spirobifluorene is synthesized by introducing a carbazolyl group at a side chain of a spirobifluorene. No intramolecular charge transfer from a main chain to a side chain occurs in the carbazolyl spirobifluorene polymer prepared in the present disclosure. And the polymer has a good hole transport capability due to the modification with carbazole, and a good device efficiency can be achieved while retaining the advantage of the color purity of pure blue light. Meanwhile, by introducing an aromatic group to the poly(spirobifluorene) of the present disclosure, emission of three primary colors of blue, green and red can be obtained, and a good device efficiency can be achieved.

Abstract: The present invention provides a failure logic modeling method for a high-speed railway train operation control on-board system, including the following steps: determining the functional relationship between the structure and the parts of the train control on-board system; analyzing the failures of the parts based on known failures of the train control on-board system in combination with brainstorming; establishing an FMEA table to generalize the failures of the parts; editing and simulating the failures by using a modeling tool. By adopting the present invention, the failure modes analyzed are more systematic, and the failure logic modeling can be carried out from a global perspective more easily, the whole process can be better targeted meanwhile, the security analysis complexity of the train control system will be effectively reduced and the development period of the train control system will be shortened.

Abstract: The utility model discloses a portable abdominal cardiopulmonary resuscitator for electrocardiogram monitoring, comprising an abdominal pull-push cardiopulmonary resuscitator body provided with a display and a central processing unit, wherein the abdominal pull-push cardiopulmonary resuscitator body is also provided with an electrocardiographic electrode communication module which is connected with the central processing unit; the electrocardiographic electrode communication module is connected with electrocardiographic electrodes in a wireless or wired way; and the display is used for displaying abdominal pull-push information and electrocardiogram monitoring information.

Abstract: The present invention provides a failure logic modeling method for a high-speed railway train operation control on-board system, including the following steps: determining the functional relationship between the structure and the parts of the train control on-board system; analyzing the failures of the parts based on known failures of the train control on-board system in combination with brainstorming; establishing an FMEA table to generalize the failures of the parts; editing and simulating the failures by using a modeling tool. By adopting the present invention, the failure modes analyzed are more systematic, and the failure logic modeling can be carried out from a global perspective more easily, the whole process can be better targeted meanwhile, the security analysis complexity of the train control system will be effectively reduced and the development period of the train control system will be shortened.

Abstract: This invention relates to a white electroluminescent polymeric material and preparation thereof. Based on the physical idea that white light emission can be achieved by regulating the relative luminous intensities of blue- and orange-light emitting units located in a single polymer molecule, the present invention provides three types (main chain type, pendant chain type, and terminal group type) of high efficiency and stable white electroluminescent polymeric material systems.

Abstract: This invention relates to a white electroluminescent polymeric material and preparation thereof. Based on the physical idea that white light emission can be achieved by regulating the relative luminous intensities of blue- and orange-light emitting units located in a single polymer molecule, the present invention provides three types (main chain type, pendant chain type, and terminal group type) of high efficiency and stable white electroluminescent polymeric material systems.

Abstract: This invention relates to a white electroluminescent polymeric material and preparation thereof. Based on the physical idea that white light emission can be achieved by regulating the relative luminous intensities of blue- and orange-light emitting units located in a single polymer molecule, the present invention provides three types (main chain type, pendant chain type, and terminal group type) of high efficiency and stable white electroluminescent polymeric material systems.

Abstract: This invention relates to an energy-transfer type light-emitting polymers based on poly(p-phenylene vinylene)s containing two or more kinds of luminous elements which are completely isolated by an ether group in the backbone, having the following structural formula. The conjugated length of each kind of luminous element can be adjusted and different luminous elements can be effectively isolated by an ether bond as a linking element and an isolating element. Meanwhile, different luminous elements can independently emit, which provides the precondition of energy transfer between different luminous elements in relation to molecular structure and therefore the fluorescence quantum efficiency can be improved.