Abstract: The disclosure relates to a method, apparatus, readable medium, and electronic device for live stream interaction. The method includes: in accordance with displaying of a first control at a first target position of a live stream interface, obtaining a first duration during which a user watches the live stream interface; in accordance with a determination that the first duration is greater than or equal to a first predetermined duration threshold, switching the first control to a second control, and displaying the second control at a second target position of the live stream interface; and in response to a first operation command performed by the user on the second control, allocating a virtual resource to the user. In this way, interaction modes of a live stream room are enriched, and an activity level of the live stream room can be improved.

Abstract: A clock oscillator, a clock oscillator production method and use method, and a chip including the clock oscillator are provided. The clock oscillator includes a resonator, a shock-absorbing material layer, and a base, and at least a part of the shock-absorbing material layer is located between the resonator and the base. In the clock oscillator, the shock-absorbing material layer is added between the resonator and the base, and the shock-absorbing material layer can effectively prevent a mechanical wave from being conducted between the base and the resonator, so that the resonator is protected from external vibration. This can ensure, when there is external vibration, that an output frequency of the resonator is not deteriorated and improve shock absorption performance of the clock oscillator.

Abstract: A resonator includes a resonance layer, a substrate, and a barrier layer. The barrier layer is located on the substrate, and the barrier layer and the substrate form a cavity. The cavity is configured to accommodate the resonance layer. The barrier layer includes a top wall and a side wall, and an inner surface of the side wall surrounds the resonance layer. An outer surface of the side wall includes a groove, and the groove surrounds the side wall.

Abstract: Disclosed are scanning equipment, a method, a device and a storage medium thereof. The equipment comprises a rotatable rotating component, a scanning device, and a positioning device, where: the positioning device is used for respectively positioning the rotating component rotated to different predetermined positions, and the scanning device is used for scanning goods held on the rotating component having been positioned.

Abstract: A method and an apparatus determines a network device receiving a first signal and at least one second signal, wherein the first signal carries data to be sent through a first flexible Ethernet interface. A first physical layer clock is determined based on the first signal. A second physical layer clock is determined based on the at least one second signal or the first physical layer clock and the at least one second signal. The first physical layer clock or the second physical layer clock is used as a sending clock of a non-flexible Ethernet interface. The network device includes the first flexible Ethernet interface and the non-flexible Ethernet interface.

Abstract: A method, system and computer program product for secure access management for tools within a secure environment. A virtual file system for a user in memory on a server side in the secure environment is accessed as part of an authenticated user session including a user command instigated by a user. At the virtual file system, an encrypted file stored in the secure environment is obtained, where the file is encrypted using a public key of a user. A read operation at the virtual file system of the encrypted file is intercepted and the encrypted file is sent to a client at a user system external to the secure environment over a secure connection for decryption by a remote cryptography device of the user system using the user's private key. The decrypted file is then received at the virtual file system enabling the user to run the required user command.

Abstract: A method, system and computer program product for secure access management for tools within a secure environment. A virtual file system for a user in memory on a server side in the secure environment is accessed as part of an authenticated user session including a user command instigated by a user. At the virtual file system, an encrypted file stored in the secure environment is obtained, where the file is encrypted using a public key of a user. A read operation at the virtual file system of the encrypted file is intercepted and the encrypted file is sent to a client at a user system external to the secure environment over a secure connection for decryption by a remote cryptography device of the user system using the user's private key. The decrypted file is then received at the virtual file system enabling the user to run the required user command.

Abstract: A clock synchronization packet exchanging method includes sending, by a first device in a Flexible Ethernet (FlexE) group, a first FlexE instance at a first physical layer (PHY), where the first FlexE instance includes a clock synchronization packet, and a second FlexE instance sent by the first device in the FlexE group at a second PHY also includes a clock synchronization packet. The clock synchronization packets are carried in a plurality of FlexE instances transmitted between a transmit end and a receive end in the FlexE group.

Abstract: The present disclosure discloses a preparation method and a recovery method of pariduval mesenchymal stem cells (PMSCs). In the preparation method, a high-glucose Dulbecco's Modified Eagle Medium (DMEM) that includes a Tryple-ethylenediaminetetraacetic acid (EDTA) enzyme of 40% to 60% in volume concentration and collagenase type II of 8 mg/ml to 12 mg/ml is used as a tissue digestion solution to digest tissue blocks, which facilitates PMSCs to climb out of the tissue blocks and grow adherently; and a serum-free DMEM is adopted as a selective medium to terminate the digestion and resuspend PMSCs, which helps to improve a purity of PMSCs, accelerate the growth of PMSCs, and achieve the rapid expansion of PMSCs in vitro.

Abstract: The present invention provides a rapid viral nucleic acid detection kit prepared by using a novel RecA enzyme and the detection method thereof. By editing the recombinase RecA gene, the expressed RecA protein has better solubility and recombinase activity. The RecA protein is used to prepare recombinase dry powder, further the formula of the recombinase dry powder and the ratio are optimized; and specific primers for the ASFV p72 gene are designed for the rapid nucleic acid detection of ASFV, significantly improving the detection sensitivity. In addition, the detection time is short, which effectively avoids missed detection and false detection, and helps prevention of epidemic.

Abstract: A method for exchanging a clock synchronization packet performed by a network apparatus, including: exchanging a clock synchronization packet with a first clock source, where the network apparatus includes a boundary clock; determining a first time deviation of the boundary clock relative to the first clock source according to the clock synchronization packet exchanged with the first clock source, where the boundary clock avoids performing an operation of calibrating a time of a local clock of the boundary clock according to the first time deviation; and sending a clock synchronization packet to a first slave clock of the boundary clock, where the clock synchronization packet includes a first timestamp, a value of the first timestamp is equal to a first corrected value, and the first corrected value is a value obtained by the boundary clock by correcting the time of the local clock by using the first time deviation.

Abstract: A packet processing method includes receiving a first packet by a first receiving interface of a media conversion module of a first network device, where the first packet includes a first alignment marker (AM), sending a second packet by a first sending interface of the media conversion module, where the second packet includes the first AM, and where the second packet is the first packet processed by the media conversion module, and calculating a time interval T1 between a time at which the media conversion module receives the first packet and a time at which the media conversion module sends the second packet, where the T1 is used to compensate for a first timestamp at which the first network device receives or sends the third packet.

Abstract: A method, a device, and a system, the method including determining, by a management device, a first transmission path that is in a network system and that is used to transmit a clock packet of a target clock source, sending, by the management device, configuration information for the first transmission path to a plurality of network devices on the first transmission path, receiving, by the management device, information that is sent by an endpoint network device on the first transmission path and that is used to determine a time difference, and sending, by the management device, a corresponding clock compensation value to at least one network device on the first transmission path based on the information that is used to determine the time difference.

Abstract: A clock port attribute recovery method includes a network device setting a value of a port attribute of a clock port of the network device to a first value based on the clock port not receiving any one of three types of clock messages: N synchronization messages, follow-up messages, and delay response messages within a timeout interval, where the first value indicates that a message is lost on the clock port. Based on a case that a recovery condition is met, the network device sets the value of the port attribute of the clock port to a second value, where the second value indicates that a status of the clock port is that the message is not lost.

Abstract: The present disclosure provides a method for promoting the growth of parietal decidual basalis-mesenchymal stem cells (PDB-MSCs), which comprises promoting the growth of parietal decidual basalis-mesenchymal stem cells (PDB-MSCs) via a human umbilical cord-mesenchymal stem cell (UC-MSC)-derived exosome. In the present disclosure, after the PDB-MSCs are co-cultivated with the human UC-MSC-derived exosome, the PDB-MSCs show strong cell proliferation ability, prominent cell shape, and desirable cell viability. That is, the human UC-MSC-derived exosome of the present disclosure can improve a quality of PDB-MSCs and effectively improve the ability of PDB-MSCs to secrete vascular endothelial growth factor (VEGF) and stem cell factor (SCF), so as to solve the problem that PDB-MSCs show decreased proliferation ability and poor cell viability after multiple passages, which effectively facilitates the large-scale cultivation and clinical practice of PDB-MSCs.

Abstract: A fiber link detection method is implemented by a first network device of an optical communications network. The fiber link detection method includes obtaining a forward delay value indicating a forward delay of transmitting a first Precision Time Protocol (PTP) packet by a second interface of a second network device to a first interface of the first network device over a fiber link. A reverse delay value indicating a reverse delay of transmitting a second PTP packet by the first interface to the second interface over the fiber link is obtained, and a determination is made, based on the forward delay value, the reverse delay value, and a first threshold, that the fiber link comprises a third network device, where the first network device and the second network device support a PTP, and where the third network device does not support the PTP.

Abstract: A clock oscillator includes a first resonator, a second resonator, and a frequency synthesis module, where an output frequency of the first resonator is higher than an output frequency of the second resonator, the frequency synthesis module is configured to generate a synthesis frequency based on the output frequency of the first resonator and the output frequency of the second resonator, and the synthesis frequency is used as a clock frequency output by the clock oscillator. The clock oscillator uses both of the two resonators with the different output frequencies as clock signal sources, and generates a synthesized clock signal by using the frequency synthesis module.

Abstract: A clock oscillator, a clock oscillator production method and use method, and a chip including the clock oscillator are provided. The clock oscillator includes a resonator, a shock-absorbing material layer, and a base, and at least a part of the shock-absorbing material layer is located between the resonator and the base. In the clock oscillator, the shock-absorbing material layer is added between the resonator and the base, and the shock-absorbing material layer can effectively prevent a mechanical wave from being conducted between the base and the resonator, so that the resonator is protected from external vibration. This can ensure, when there is external vibration, that an output frequency of the resonator is not deteriorated and improve shock absorption performance of the clock oscillator.

Abstract: A time synchronization method includes receiving, by a receive-end device, a first timestamp and a first header signal sent by a transmit-end device, where the first timestamp indicates a first moment at which a first channel medium conversion module sends the first header signal, and a second moment at which the receive-end device receives the first header signal. The method further includes sending a second header signal to the transmit-end device, where a third moment at which the receive-end device sends the second header signal. The method further includes receiving a fourth timestamp sent by the transmit-end device, where the fourth timestamp indicates a fourth moment at which the transmit-end device receives the second header signal. The method further includes synchronizing time with the transmit-end device based on the first moment, the second moment, the third moment, and the fourth moment.

Abstract: A packet processing method includes receiving a first packet by a first receiving interface of a media conversion module of a first network device, where the first packet includes a first alignment marker (AM), sending a second packet by a first sending interface of the media conversion module, where the second packet includes the first AM, and where the second packet is the first packet processed by the media conversion module, and calculating a time interval T1 between a time at which the media conversion module receives the first packet and a time at which the media conversion module sends the second packet, where the T1 is used to compensate for a first timestamp at which the first network device receives or sends the third packet.