Abstract: The present disclosure relates to the technical field of preparation of trisilylamine (TSA), in particular to a method for preparing TSA at an ultra-low temperature. The present disclosure provides a method for preparing TSA without a solvent at an ultra-low temperature, where by-products generated by a reaction can be easily removed by filtration with a metal ion-adsorption permeable membrane. The TSA obtained by the reaction has a gas chromatography (GC) purity of 99.5%, a receivable yield of not less than 85% (in terms of ammonia), and a metal ion purity of 6N. In addition, the method has a simple device, a high reaction degree of raw materials, a lower cost, a great market value, and a better industrial production benefit.

Abstract: The present disclosure provides a heat leakage prevention device for a single crystal furnace and a single crystal furnace system including the heat leakage prevention device, wherein the heat leakage prevention device includes a thermal field structure and a plugging device disposed on an outer side of the single crystal furnace, the thermal field structure is provided with a thermal field open for feeding the single crystal furnace, the plugging device is disposed on a side of the thermal field structure close to the single crystal furnace, and the plugging device is movably disposed to expose or completely plug the thermal field open.

Abstract: The present disclosure provides raw material re-feeding apparatus for manufacturing a monocrystal and monocrystal manufacturing apparatus including the same. The raw material re-feeding apparatus is provided outside a monocrystal furnace and includes a storage and a feeder in communication with the storage. A discharging end of the feeder is located in the monocrystal furnace and movable relative to the monocrystal furnace, so that the discharging end of the feeder is immersed in a silicon melt when the material re-feeding is performed, and thus the material is melted and re-fed.

Abstract: The present disclosure provides raw material re-feeding apparatus and monocrystal manufacturing apparatus having the same. The raw material re-feeding apparatus includes a charger body, a storage, a fixed conveyer, a mobile conveyer, and a switching device. The fixed conveyer and the storage are disposed in the charger body, and the fixed conveyer is disposed at a discharging end of the storage for conveying materials. A charging end of the mobile conveyer is aligned with a discharging end of the fixed conveyer, and the mobile conveyer is movable relative to a monocrystal furnace, so that materials flowing out of the fixed conveyer can fall onto the mobile conveyer. The switching device is connected to the charger body and the monocrystal furnace for achieving connection/disconnection between the charger body and the monocrystal furnace.

Abstract: A mobile station using orthogonal frequency division multiple access (OFDMA). The frequency processing circuitry and the processor are configured to scan spectral bands for a first signal, the first signal having synchronization and system information. Wherein, the system information comprises configuration of a first multi-carrier communication structure, wherein the first multi-carrier communication structure comprises allocated subcarriers, a subcarrier bandwidth, and a time duration of an OFDM symbol. Further, the frequency processing circuitry and the processor configured to receive and process signals in the first multi-carrier communication structure and switch to receive and process signals using a second multi-carrier communication structure, the second multi-carrier communication structure having different subcarrier bandwidth than the first multi-carrier communication structure.

Abstract: This application discloses an assistance information reporting method, a service configuration method, a terminal, and a network side device, and belongs to the field of communication technologies. The assistance information reporting method in embodiments of this application includes: A terminal sends assistance information for target data to a network side device. The terminal receives configuration information of the target data from the network side device.

Abstract: A hygienic assembly and a hygienic robot. The hygienic assembly includes a housing adapted to be connected to a reduction box of a joint of the robot, an opening, and a flange having a first end for connecting to an output member of the reduction box and a second end for connecting to an end effector. The assembly also includes a seal member which includes an outer ring fixed to an inner circumferential surface of the opening and a seal lip slidably contacting an outer circumferential surface of the flange.

Abstract: A two-gear and dual-motor driven hybrid power transmission device and a transmission method therefore are provided, belonging to the technical field of transmissions. An input end of an input shaft is connected to an engine power system, and an output end of the input shaft is connected to a front-end motor by means of a front-row planetary gear train. The front-row planetary gear train is connected to one end of a first clutch, another end of the first clutch is connected to an input end of an output shaft, and an output end of the output shaft is connected to a rear axle of a vehicle. The output shaft is connected to a rear-end motor by means of a rear-row planetary gear train, and the rear-row planetary gear train is connected to a second clutch and a third clutch.

Abstract: An anionic-cationic-nonionic surfactant represented by the formula (I) exhibits significantly improved interfacial activity and stability as compared with the prior art. With the present anionic-cationic-nonionic surfactant, a flooding fluid composition for tertiary oil recovery with improved oil displacement efficiency and oil washing capability as compared with the prior art could be produced.

Abstract: The present disclosure provides a preparation method of spherical ?-alumina with a low viscosity and a high thermal conductivity. In the preparation method, a spherical ?-alumina powder is obtained through spheroidization by melting using an angular ?-alumina powder as a raw material; and the spherical ?-alumina powder is calcined at a high temperature to obtain the spherical ?-alumina with a low viscosity and a high thermal conductivity. In the present disclosure, a spheroidization rate and an ?-phase are kept unchanged by adjusting a calcination temperature and a calcination time, while improving the thermal conductivity of the alumina and not affecting a viscosity of products such as thermal conductive films prepared from the alumina as a filler.

Abstract: The invention provides novel benzamides of pyrazolyl-amino-pyrimidinyl derivatives of Formula (I) as selective and potent JAK inhibitors for treating various diseases and disorders. The invention also provides pharmaceutical composition of these compounds and methods of their preparation and use thereof.

Abstract: Provided are a positioning calibration system and method, and a storage medium. The positioning calibration system includes a movable platform (100) and a background processing device (200). The movable platform (100) includes a movable apparatus (110), and a positioning component (120) and a data processing apparatus (130); the positioning module (120) includes at least two different types of positioning sensors (121); the data processing apparatus (130) is configured to acquire wireless positioning information of the movable platform (100) in real time and acquire the original calibration information; the wireless positioning information and the original calibration information both include a position coordinate of the movable platform (100) with a corresponding time stamp when the position coordinate is acquired; the background processing device (200) includes a storage module (210) and a positioning trajectory demonstration module (220).

Abstract: Provided is a novel class of orally and/or topically available, selective and potent JAK inhibitors as safe and effective therapeutics against various diseases and disorders. Also provided is pharmaceutical composition of these compounds and methods of a their preparation and use thereof.

Abstract: A method and system for minimizing the control overhead in a multi-carrier wireless communication network that utilizes a time-frequency resource is disclosed. In some embodiments, one or more zones in the time-frequency resource are designated for particular applications, such as a zone dedicated for voice-over-IP (VOIP) applications. By grouping applications of a similar type together within a zone, a reduction in the number of bits necessary for mapping a packet stream to a portion of the time-frequency resource can be achieved. In some embodiments, modular coding schemes associated with the packet streams may be selected that further reduce the amount of necessary control information. In some embodiments, packets may be classified for transmission in accordance with application type, QoS parameters, and other properties. In some embodiments, improved control messages may be constructed to facilitate the control process and minimize associated overhead.

Abstract: Disclosed are a hydraulic control system for boom floating of an excavator and a control method thereof. In the hydraulic circuit, a main pump supplies oil to the boom cylinder through a boom reversing valve, and two working ports of the boom reversing valve are connected to a rod cavity and a rodless cavity of the boom cylinder respectively. A rod cavity floating valve and a rodless cavity floating valve are connected to an oil circuit between the rod cavity of the boom cylinder and the boom reversing valve and an oil circuit between the rodless cavity of the boom cylinder and the boom reversing valve respectively. A pilot oil pump and a handle pilot valve are arranged on the pilot oil circuit, an oil inlet of the handle pilot valve is connected to the pilot oil pump.

Abstract: Methods and systems for contingency communication are disclosed. In one embodiment, a method for providing emergency services may be performed by a base station operating in a communication system in an embodiment, the method for providing emergency services includes transmitting a beacon signal to indicate an emergency status to enable portable devices to operate in a stress mode. A distress signal may be transmitted by a mobile device in response to the beacon signal to the base station, wherein the distress signal carries information at least comprising user identity associated with the mobile device, geolocation of the mobile device, or biometrics of a user of the mobile device.

Abstract: An arrangement is disclosed where in a multi-carrier communication system, the modulation scheme, coding attributes, training pilots, and signal power may be adjusted to adapt to channel conditions in order to maximize the overall system capacity and spectral efficiency without wasting radio resources or compromising error probability performance, etc.

Abstract: A connecting structure of a display rack includes an elbow connector, a locking member, and a transverse rod. At least one side of the elbow connector has a protruding portion. One end face of the protruding portion has a locking hole. The locking member is connected to the end face of the protruding portion. One end face of the locking member, facing the protruding portion, has a locking portion. The locking portion is rotatably connected to the locking hole. One end of the transverse rod is fitted on the locking member and is fixedly connected to the locking member. The display rack has a simple structure and is easy for installation.

Abstract: The invention provides novel benzamides of pyrazolyl-amino-pyrimidinyl derivatives of Formula (I) as selective and potent JAK inhibitors for treating various diseases and disorders. The invention also provides pharmaceutical composition of these compounds and methods of their preparation and use thereof.

Abstract: Methods and systems are disclosed for communicating in a wireless communications system utilizing a plurality of frequency bands for downlink (DL) transmission and a plurality of frequency bands for uplink (UL) transmission. In an embodiment, a mobile device receives a DL signal via a DL frequency band. The DL signal contains DL-UL frequency band association information which is used to determine a UL frequency band for UL transmission. The mobile device configures its radio-frequency (RF) circuitry to operate in the UL frequency band for UL transmission.