Abstract: The present invention provides a method for analysis and determination of the heavy metal occurrence key mineral phases in industrial solid waste, by performing N concentration gradients dissociation determination of the heavy metal solid waste to be tested under the same dissociation conditions, to give the dissociation degrees of the heavy metal elements to be tested at N different concentration gradients; the dissociated solid residues after dissociation being quantitatively analyzed for the mineral phase, to give the relative content of each mineral phase in the M mineral phases of the heavy metal solid waste to be tested; then calculating to give the occurrence distribution proportion of the heavy metal elements in the mineral phase, which are accumulated from high to low; the occurrence key mineral phase whose cumulative occurrence proportion exceeds the preset cumulative threshold value is determined to be the key mineral phase of the heavy metal elements.

Abstract: The present invention provides a method for analysis and determination of the heavy metal occurrence key mineral phases in industrial solid waste, by performing N concentration gradients dissociation determination of the heavy metal solid waste to be tested under the same dissociation conditions, to give the dissociation degrees of the heavy metal elements to be tested at N different concentration gradients; the dissociated solid residues after dissociation being quantitatively analyzed for the mineral phase, to give the relative content of each mineral phase in the M mineral phases of the heavy metal solid waste to be tested; then calculating to give the occurrence distribution proportion of the heavy metal elements in the mineral phase, which are accumulated from high to low; the occurrence key mineral phase whose cumulative occurrence proportion exceeds the preset cumulative threshold value is determined to be the key mineral phase of the heavy metal elements.

Abstract: A slit-lamp microscope includes a base plate defining an x-axis and a z-axis. The microscope includes a movable base member slidably disposed on the base plate. The microscope includes a computer that generates first and second control signals to induce first and second movement devices, respectively, to move the movable base member in response to a first x-axis command and a first z-axis command, respectively, in first and second remote control messages, respectively. The computer generates a third control signal to induce the digital camera of the microscope assembly to generate a digital image from the light received from the subjects eye in response to the photograph command in a third remote control message.

Abstract: This application provides a communication method that includes grouping a plurality of clients to obtain at least two device groups, where each of the at least two device groups includes at least two clients. The method further includes receiving a publish request sent by a first client, where the publish request includes first data that corresponds to a first topic. The publish request is used to request a message queue telemetry transport (MQTT) server to publish the first data. After it is determined that a first device group to which the first client belongs from the at least two device groups, a publish message that includes the first data is sent to a second client in the first device group.

Abstract: An image upgrade method is provided. The method includes: receiving an incremental image file of a container, where the incremental image file includes a newly-added file, a modified file, and information about a deleted file, and the information about the deleted file includes a name of each deleted file and a storage path of the deleted file; updating an original image layer based on the incremental image file to obtain an updated image layer, where a state of the deleted file is set to a hidden state at the updated image layer; and overlaying a file at the updated image layer with a file at a container data layer to form an updated unified view at a view layer for use by the container, where the updated unified view does not include the deleted file whose state is set to the hidden state.

Abstract: An electric motor and an elevator system. The electric motor includes: a casing; a stator supported by the casing, the stator including a stator yoke and stator teeth, and a winding being wound around the stator teeth and generating a magnetic field when energized; and a rotor which rotates under the action of the magnetic field; wherein at least a portion of the stator yoke is formed as a moving plate which is movable between a first position and a second position; and when the winding is energized, the moving plate is capable of moving from the first position to the second position under the action of the magnetic field, and in the second position, the moving plate is separated from the rotor; and after the winding is de-energized, the moving plate is moved from the second position to the first position under the action of a spring force.

Abstract: This application provides a communication method and a communications apparatus. The communication method includes: grouping a plurality of clients to obtain at least two device groups, where each of the at least two device groups includes at least two clients; receiving a publish request sent by a first client, where the publish request includes first data, the first data corresponds to a first topic, and the publish request is used to request the MQTT server to publish the first data; and determining a first device group to which the first client belongs from the at least two device groups, and sending a publish message to a second client in the first device group, where the publish message includes the first data.

Abstract: An image upgrade method is provided. The method includes: receiving an incremental image file of a container, where the incremental image file includes a newly-added file, a modified file, and information about a deleted file, and the information about the deleted file includes a name of each deleted file and a storage path of the deleted file; updating an original image layer based on the incremental image file to obtain an updated image layer, where a state of the deleted file is set to a hidden state at the updated image layer; and overlaying a file at the updated image layer with a file at a container data layer to form an updated unified view at a view layer for use by the container, where the updated unified view does not include the deleted file whose state is set to the hidden state.

Abstract: A braking device, a braking system for an elevator, and an elevator system. The braking device comprises a braking unit and an actuating unit arranged to cause the braking unit to be in a braking state to provide a braking force to a mating external component, or in a non-braking state to stop providing the braking force to the external component, and the braking device further comprises a vibration isolating member with non-linear rigidity, for providing an effect of damping and vibration isolation between the actuating unit and the braking unit at least in the non-braking state.

Abstract: An electric motor and an elevator system. The electric motor includes: a casing; a stator supported by the casing, the stator including a stator yoke and stator teeth, and a winding being wound around the stator teeth and generating a magnetic field when energized; and a rotor which rotates under the action of the magnetic field; wherein at least a portion of the stator yoke is formed as a moving plate which is movable between a first position and a second position; and when the winding is energized, the moving plate is capable of moving from the first position to the second position under the action of the magnetic field, and in the second position, the moving plate is separated from the rotor; and after the winding is de-energized, the moving plate is moved from the second position to the first position under the action of a spring force.

Abstract: A method and apparatus for detecting a movement direction of a target object are provided. The method comprises: acquiring a video sequence of the target object, and determining positions of the target object in a plurality of image frames of the video sequence; setting a plurality of base vectors within a coverage range of an image collection apparatus capturing the video sequence, wherein an angle between each of the base vectors and a reference vector set according to a specific scene being captured satisfies a predetermined condition; for each of the base vectors, determining a movement direction of the target object between each pair of adjacent image frames with respect to the base vector, and determining a general movement direction of the target object with respect to the base vector thereby; determining a movement direction of the target object according to the general movement directions of the target object.

Abstract: A method and apparatus for detecting a movement direction of a target object are provided. The method comprises: acquiring a video sequence of the target object, and determining positions of the target object in a plurality of image frames of the video sequence; setting a plurality of base vectors within a coverage range of an image collection apparatus capturing the video sequence, wherein an angle between each of the base vectors and a reference vector set according to a specific scene being captured satisfies a predetermined condition; for each of the base vectors, determining a movement direction of the target object between each pair of adjacent image frames with respect to the base vector, and determining a general movement direction of the target object with respect to the base vector thereby; determining a movement direction of the target object according to the general movement directions of the target object.

Abstract: A rotary machine is provided that includes a housing, a connection plate, a rotor, a bearing, and an encoder. The housing has a housing wall and a housing shaft. The housing shaft extends from the housing wall in an axial direction along a housing shaft centerline. The rotor extends from the connection plate in the axial direction, and extends (e.g., concentrically) about the housing shaft centerline. The bearing supports the rotor on the housing shaft. The bearing enables rotation of the rotor relative to the housing shaft and about the housing shaft centerline. The encoder is positionally fixed relative to the housing shaft. The encoder has an encoder shaft directly connected to the connection plate. The encoder shaft extends in the axial direction and extends concentrically about the housing shaft centerline. The encoder is operable to sense a rotation characteristic of the encoder shaft.

Abstract: In a method for controlling a screen protection function of a portable electronic device, the portable electronic device includes a gravity sensor, a display screen, and a storage system. The gravity sensor detects a horizontal vector and a vertical vector of a gravitational acceleration of the portable electronic device, and a tilt angle of the portable electronic device is calculated according to the horizontal vector and the vertical vector. The method activates a screen protection program of the portable electronic device to control the display screen to enter into a power saving mode if the tilt angle exceeds a preset tilt angle range stored in the storage system, and terminates the screen protection program to control the display screen to enter into a normal display mode if the tilt angle does not exceed the preset tilt angle range.

Abstract: In a system and method for testing a serial port of a computing device, the serial port electronically connects to a test fixture. Test data is sent to a receive data (RXD) pin by a transmit data (TXD) pin. A test result is received from the serial port by the RXD pin. The TXD pin and the RXD pin work normally if the test data is identical to the test result. When voltages of a request to send (RTS) pin and a data terminal ready (DTR) pin are set at high level, the RTS pin, a data carrier detect (DCD) pin, the DTR pin, a ring indicator (RI) pin, a data send ready (DSR) pin and a clear to send (CTS) pin work normally, upon the condition that status values of the serial port indicate the voltages of the above six pins are at high level.

Abstract: A method controls power of a baseboard management controller (BMC). A power control signal of the BMC is generated for powering up or powering down the BMC. An enabling signal is generated according to the power control signal. A power supply device is directed to output one or more voltages to the BMC.

Abstract: A preboot execution environment (PXE) test device includes a microprocessor, one or more indicators, a network interface, a power connector, and a storage device. The network interface connects the PXE test device with a computer. The power connector connects an external power source to supply a voltage to the PXE test device. The storage device stores a boot loader, an embedded operating system, and one or more programs. The microprocessor executes the boot loader and the embedded operating system to start the PXE test device. The one or more indicators indicate a power supply status and a starting status of the PXE test device. The microprocessor further executes the one or more programs to remotely boot the computer for test PXE of a network card in the computer.

Abstract: An updating device connected to a network adapter card ROM, the updating device includes a baseboard management controller. The baseboard management controller is electrically connected to the network adapter card ROM. The baseboard management controller stores an update data for the network adapter card ROM. When the baseboard management controller starts, the baseboard management controller writes the update data into the network adapter card ROM. A method of updating a network adapter card ROM is also provided.

Abstract: A server includes a Southbridge chip, a first storage device, and a baseboard management controller (BMC) electrically connected to the Southbridge chip. A field replacement unit (FRU) is electrically connected to the BMC and the first storage device. The BMC reads data from a second storage device electrically connected to the BMC, writes the data into the FRU, sends a first control signal to a switch positioned between the BMC, the first storage device and the FRU, to switch on an electrical connection between the BMC and the first storage device for reading data stored within the first storage device. If the data stored within the first storage is different from the data stored within the FRU, the BMC reads the data from the FRU, and writes the data into the first storage device, to synchronize the data within the first storage device and the FRU.

Abstract: A display apparatus includes a photoelectric sensor disposed on an inner side of a frame and located corresponding to a corner of a pixel area of a display panel in a predetermined position. When the display apparatus is turned on, the display panel provides a light spot at a corner of a current pixel area of the display apparatus corresponding to the photoelectric sensor, and a micro-control circuit compares an electronic signal received from the photoelectric sensor with a sample value. If different, an interrupt is triggered to execute a position offsetting interrupt program to adjust the display parameter of the display apparatus, thereby moving the pixel area to adjust the relative position of the light spot and the photoelectric sensor, so that the relative position becomes identical to that when the pixel area of the display panel is in the predetermined position.