Abstract: The invention relates to a molecular sieve SCM-15, a preparation process and use thereof. The molecular sieve comprises a schematic chemical composition of a formula of “SiO2.GeO2”, wherein the molar ratio of silicon and germanium satisfies SiO2/GeO2?1. The molecular sieve has unique XRD diffraction data and can be used as an adsorbent or a catalyst.

Abstract: Disclosed are a gimbal and a control method and apparatus for a photographing apparatus. The photographing apparatus is mounted on a gimbal. When a communication link between the photographing apparatus and the gimbal is in an active state, the photographing apparatus is controlled by the gimbal. The method includes: detecting a first indication signal; and switching the communication link between the gimbal and the photographing apparatus from an active state to an inactive state, so that the photographing apparatus can be controlled autonomously. When the first indication signal is detected, the communication link between the gimbal and the photographing apparatus is switched from the active state to the inactive state, so that the photographing apparatus can restore to an autonomous control mode without physical plugging or unplugging or manual disabling of a wireless connection function in settings, helping a user to operate various functions.

Abstract: The present disclosure provides an unmanned aerial vehicle control method and an unmanned aerial vehicle. The unmanned aerial vehicle control method includes: determining that the unmanned aerial vehicle is in a first mode, where the first mode includes a mode in which the unmanned aerial vehicle moves following the rotation of the gimbal; and after determining that the gimbal is in a specific working condition, entering an exception handling procedure. According to the present disclosure, when the unmanned aerial vehicle is in the first mode, if the gimbal is in the specific working condition, which may cause the unmanned aerial vehicle to generate a spinning phenomenon, the unmanned aerial vehicle enters the exception handling procedure. Therefore, the spinning problem of the unmanned aerial vehicle is avoided, and a risk of crashing of the unmanned aerial vehicle is also avoided.

Abstract: A data processing method includes determining a target amount according to a first amount indicating an amount of obtained data that a sensor has currently obtained and a second amount calculated according to the first amount and a preset calculation rule, reading sensor data from the sensor according to the target amount, and transmitting the read sensor data.

Abstract: A data processing method includes, in response to detecting that a target data packet needs to be sent, obtaining subscription information configured for the target data packet, determining one or more user identifications (IDs) recorded in the subscription information according to the subscription information, and pushing the target data packet according to the one or more user IDs.

Abstract: A multimode optical fiber includes a core and a cladding covering the core. The core has a radius in a range of 23.75-26.25 ?m. A refractive index profile of the core has a graded refractive index distribution with a refractive index distribution index ? in a range of 1.80-1.89. The core has a maximum relative refractive index difference ?1% in a range from 1.0% to 1.15%. The multimode optical fiber has a fusion loss less than or equal to 0.08 dB. The multimode optical fiber is applied in a middle-and-long distance distributed temperature-measuring system, and a temperature-measuring distance of the system reaches 10 km to 27 km. The system includes a pulsed laser light source, a wavelength division multiplexer, an avalanche photodiode, a data acquisition device, an upper computer, and the temperature-measuring multimode optical fiber.

Abstract: An anti-cracking panda-type polarization-maintaining optical fiber includes a cladding layer, stress layers, and a fiber core. The fiber core is located in the center of the cladding layer. The stress layers are located symmetrically at two sides of the fiber core with a distance away from the fiber core and are located within the cladding layer. Each stress layer is enclosed at edges of their outer sides by a transition layer with a gradient refractive index. By providing the transition layer with the gradient refractive index at the edge of the outer side of the stress layer, the pressure stress at the edge of the stress layer is decomposed and released, so as to avoid cracks at the edge of the polished stress layer on the end of the optical fiber, and thus optimizes the performance of the polarization-maintaining optical fiber by decreasing the room temperature polishing cracking rate.

Abstract: A method for controlling reset of a gimbal includes calculating a difference between a joint angle of the gimbal at a first position and a joint angle of the gimbal at a second position when the gimbal passively rotates from the first position to the second position along a passive rotation direction, and controlling the gimbal to return to the first position from the second position by rotating along a direction opposite to the passive rotation direction if the difference satisfies a first condition, or by rotating along a shortest path or along the direction opposite to the passive rotation direction according to a target sub-region if the difference satisfies a second condition. The first position is located in the target sub-region, which is one of a plurality of sub-regions of a rotation region of the gimbal. The rotation region has a joint angle range larger than 360 degrees.

Abstract: A gimbal is provided for an unmanned aerial vehicle (UAV). The gimbal includes a processor, a rotational axis mechanism, a motor for driving the rotational axis mechanism, and a first sensor for providing first attitude data of the gimbal. The processor is configured to obtain a first instruction to control movement of the gimbal; acquire the first attitude data from the first sensor; acquire second attitude data of the UAV that is connected to the gimbal; adjust a control direction of the first instruction based on the first attitude data and the second attitude data to obtain a second instruction for controlling the gimbal; and control movement of the motor using the second instruction to drive the rotational axis mechanism so as to realize the controlling of the gimbal.

Abstract: A self-locking fixing device and an antenna assembly are provided. The self-locking fixing device includes an inner mandrel arranged to include a nail head and a nail rod extending away from the nail head, and a bushing arranged to include a nail head bushing and a nail rod bushing extending away from the nail head bushing. A sidewall of the nail head bushing is provided with at least two elastic clamping units. If the inner mandrel is assembled with the bushing, the nail head is located in the nail head bushing, the nail rod is located in the nail rod bushing, and clamping portions of the elastic clamping units are engaged with an upper surface of the nail head to clamp the nail head in the nail head bushing.

Abstract: The invention relates to a molecular sieve SCM-14, a preparation process and use thereof. The molecular sieve has a schematic chemical composition of a formula of “SiO2.1/nGeO2” or a formula of “kF.mQ.SiO2.1/nGeO2.pH2O”, wherein the molar ratio of silicon to germanium, n, satisfies n?30, and other values and symbols are defined in the specification. The molecular sieve has unique XRD diffraction data and can be used as an adsorbent or a catalyst.

Abstract: The invention relates to a molecular sieve SCM-15, a preparation process and use thereof. The molecular sieve comprises a schematic chemical composition of a formula of “SiO2.GeO2”, wherein the molar ratio of silicon and germanium satisfies SiO2/GeO2?1. The molecular sieve has unique XRD diffraction data and can be used as an adsorbent or a catalyst.

Abstract: A data conversion method applied to a data conversion device, including: receiving camera control signals transmitted by a remote control device; converting a format of the camera control signals to a protocol format of a camera; and transmitting the converted camera control signals to the camera. The data conversion device is connected to a gimbal and the camera, and the gimbal is controlled by the remote control device.

Abstract: Embodiments of this application provide a method and an apparatus for processing a terminal that is performing a voice service, and a communications system. In the method, a RAN device actively redirects a voice service terminal, releases an RRC connection of the terminal, and instructs a CN device to retain a GBR bearer of the voice service terminal in a release process. Because a bearer type of a VOIP service is a GBR bearer, a bearer of the VOIP service is not released. When the terminal accesses a network again, the CN device may directly use the GBR bearer to restore the voice service, so as to avoid voice service interruption caused by releasing the bearer of the VOIP service in a redirection process, reduce a call drop rate, and improve user experience.

Abstract: An anti-cracking panda-type polarization-maintaining optical fiber includes a cladding layer, stress layers, and a fiber core. The fiber core is located in the center of the cladding layer. The stress layers are located symmetrically at two sides of the fiber core with a distance away from the fiber core and are located within the cladding layer. Each stress layer is enclosed at edges of their outer sides by a transition layer with a gradient refractive index. By providing the transition layer with the gradient refractive index at the edge of the outer side of the stress layer, the pressure stress at the edge of the stress layer is decomposed and released, so as to avoid cracks at the edge of the polished stress layer on the end of the optical fiber, and thus optimizes the performance of the polarization-maintaining optical fiber by decreasing the room temperature polishing cracking rate.

Abstract: Embodiments of the present invention relate to the field of communications technologies, and disclose a single radio voice call continuity (SRVCC) capability information transmission method and apparatus, and a system. The method in the embodiments of the present invention includes: obtaining, by a core network (CN) network element, SRVCC capability information of a terminal from the terminal, where the terminal accesses, from a first-standard network by means of an inter-RAT handover, a second-standard network in which the CN network element is located, the first-standard network does not support an SRVCC function, and the second-standard network supports the SRVCC function; and sending, by the CN network element, the SRVCC capability information to a radio access network (RAN) network element.

Abstract: The present invention discloses a maltooligosyl trehalose trehalohydrolase (MTHase) mutant and application thereof, belonging to the technical fields of gene engineering and enzyme engineering. The present invention provides a series of MTHase mutants to prepare trehalose, having a better effect. Further, the MTHase mutant is expressed in Escherichia coli BL21 (DE3) and the enzyme is optimized by fermentation, which can significantly increase the yield of enzymes.

Abstract: Embodiments of this application provide a discontinuous reception DRX management method, including determining, by a base station, that a terminal has a voice service, and setting up, by the base station, a voice bearer for the terminal, and activating a DRX function of the terminal when setting up the voice bearer for the terminal. It can be learned that, in the method, the terminal does not activate the DRX function before setting up the voice bearer, and does not activate the DRX function until the voice bearer is set up, to effectively reduce a voice paging connection delay.

Abstract: The present disclosure provides a phase shifting apparatus and an electrically adjustable antenna. The phase shifting apparatus comprises a grounding plate; two bottom substrates respectively arranged on both sides of the grounding plate and coupled to the grounding plate; two top substrates respectively arranged on both sides of the two bottom substrates, wherein each of the top substrates and each of the bottom substrates form a phase shifting unit; a rod coupled to the two top substrates for adjusting a relative sliding movement between the two top substrates and the two bottom substrates so as to simultaneously adjust a phase of the output signal of each phase shifting unit.

Abstract: The present invention relates to an SCM-10 molecular sieve, a process for producing same and use thereof. The molecular sieve has an empirical chemical composition as illustrated by the formula “the first oxide·the second oxide”, wherein the ratio by molar of the first oxide to the second oxide is less than 40, the first oxide is at least one selected from the group consisting of silica and germanium dioxide, the second oxide is at least one selected from the group consisting of alumina, boron oxide, iron oxide, gallium oxide, titanium oxide, rare earth oxides, indium oxide and vanadium oxide. The molecular sieve has specific XRD pattern and can be used as an adsorbent or a catalyst for converting an organic compound.