Abstract: A crystalline form A of 2,2-bis(4-fluorophenyl)-2-phenylacetamide is provided. The crystalline form has good light stability, high temperature stability, and high humidity stability.

Abstract: The present disclosure discloses an efficient and regenerable nano manganese remover, and a method for preparing same and application thereof, belonging to the technical field of wastewater treatment and reuse. The manganese remover of the present disclosure includes Fe3O4, RGO, SiO2 and EDTA. The Fe3O4 nanoparticles are supported on the surface of the RGO, the SiO2 coats the Fe3O4, and the EDTA is grafted on the SiO2. First, Fe3O4-RGO is prepared. Then, a TEOS-ethanol solution is dropwise added, and the resulting mixture is allowed to react to obtain Fe3O4@SiO2-RGO composite particles. Finally, an EDTA-water solution is dropwise added to obtain the manganese remover. The manganese remover prepared in the present disclosure is magnetic, and the preparation process is simple and easy for industrial production. The nano manganese remover can quickly remove manganese in manganese-containing wastewater. A small amount of the manganese remover can achieve a large adsorption capacity.

Abstract: Disclosed are eutectic form A of Elagolix and pyrimethamine, a preparation method therefor and a use thereof. Using Cu-K? radiation, eutectic form A has characteristic peaks represented by a 2? degree at 8.1±0.2°, 12.2±0.2°, 13.3±0.2° and 21.1±0.2° in an X-ray powder diffraction. Eutectic form A has a high purity, a good light radiation stability, a high temperature stability, a high humidity stability and an accelerated stability, is easy to store, and has a slow moisture absorption under the condition of relatively low humidity, wherein the weight gain of eutectic form A by moisture absorption is not more than 1.08% when the relative humidity increases from 0 to 60% RH. Production conditions for eutectic form A are easy to control, same has a simple preparation process and a stable quality, and is easy to industrially produce on a large-scale.

Abstract: The present utility model discloses a spherical grinder, which comprises a grinder body; the grinder body comprises a handhold part and a grinding part, the grinding part is set below the handhold part and provided with at least one grinding unit. The present utility model is subject to a reasonable structure design; the connection to the handhold part is achieved by fitting and connecting universal balls of grinding units to connecting pieces, the operation is flexible and can meet different angle grinding requirements, improving the grinding and polishing efficiency; and the handhold part provided with a gripping part is intended for easy holding, achieving a more friendly grip, making the control of the grinder easier and avoiding hand fatigue.

Abstract: Provided in the present disclosure is a control system for a heat supply apparatus of a nuclear power plant, comprising: a first-stage pressure measurement means configured for measuring a first-stage pressure of a turbine to obtain a first-stage pressure signal; a high-exhaust pressure measurement means configured for measuring an exhaust pressure of a turbine high-pressure cylinder to obtain an exhaust pressure signal; a steam extraction heating flow rate measurement means configured for measuring a steam extraction heating flow rate to obtain a steam extraction heating flow rate signal; a data acquisition module configured for acquiring and transmitting the measured first-stage pressure signal, the measured exhaust pressure signal and the measured steam extraction heating flow rate signal to a core operation processing module; the core operation processing module; and a the signal output module.

Abstract: The present utility model is a mouthpiece of a wind instrument, an electric harmonica, an electric blowpipe, and a wind instrument. The mouthpiece for a wind instrument comprises air chambers, disposed in the housing of the wind instrument; air pressure sensors, disposed at the bottom of the air chambers for detecting air pressure changes within the air chambers; an air intake channel, disposed on the outer side of the air chambers, and when air is blown into the air intake channel. The air chambers produce pressure changes which are detected by the air pressure sensors. Air vents, disposed on the air intake channel, are configured for airflow to enter the air intake channel and be discharged from the air vents, and the path thereof changes. Such a configuration can improve user comfort, reduce poor hygiene within the instrument, and reduce the chances of inadvertent sound output.

Abstract: The present disclosure relates to a scale shifting and volume adjustment method, apparatus and device, the method comprising obtaining air pressure difference; selecting a scale to be played corresponding to the air pressure difference according to a preset scale selection strategy; obtaining a volume value corresponding to the air pressure difference according to a preset volume acquisition strategy; adjusting the volume of the notes of the scale based on the volume value. The present disclosure is capable of automatically shifting scale according to the air pressure difference, and adjusting the volume in a convenient and hassle-free manner.

Abstract: The present disclosure provides a noise reduction device. The noise reduction device may include a noise receiving component, a noise reduction component, a processing component, and a housing. The noise receiving component may be configured to receive acoustic noise information of a scanning environment where a medical device is located. The processing component may be configured to control the noise reduction component to generate sound information matching the acoustic noise information received by the noise receiving component. The housing may be configured to support the noise receiving component and the noise reduction component.

Abstract: The present application relates to a silicone oil-based immersion coolant for an electronic component. The silicone oil-based immersion coolant for an electronic component includes a base oil and an additive. The base oil includes a low-viscosity silicone oil. The additive includes a silicone oil diluent and a thermally conductive inorganic filler. The viscosity of the low-viscosity silicone oil is less than or equal to 1000 cSt. The thermally conductive inorganic filler is an insulating filler. Based on the mass of the immersion coolant, a mass percentage content of the base oil is in a range from 70% to 85%, a mass percentage content of the silicone oil diluent is in a range from 10% to 20%, and a mass percentage content of the thermally conductive inorganic filler is in a range from 5% to 10%.

Abstract: Provided are methods for preparing a library of target nucleic acid sequences, as well as compositions and uses therefor. Methods comprise contacting a nucleic acid sample with a plurality of adaptors capable of amplification of one or more target nucleic acid sequences under conditions wherein the target nucleic acid(s) undergo a first amplification; digesting the resulting first amplification products; repairing the digested target amplicons; and amplifying the repaired products in a second amplification, thereby producing a library of target nucleic acid sequence. Each of the plurality of adaptor compositions comprise a handle and a targeted nucleic acid sequence and optionally one or more tag sequences. Provided methods may be carried out in a single, addition only workflow reaction, allowing for rapid production of highly multiplexed targeted libraries, optionally including unique tag sequences. Resulting library compositions are useful for a variety of applications, including sequencing applications.

Abstract: A space-air-ground integrated UAV-assisted IoT data collection method based on AoI comprises: constructing a UAV-assisted space-air-ground integrated IoT system, constructing a UAV channel model and an AoI model, establishing an AoI-based UAV-assisted space-air-ground integrated IoT data collection model, transforming a problem into a Markov problem, introducing a neural network to solve a high-dimensional state problem, introducing a deep reinforcement learning algorithm to train UAVs to find optimal collection points, and introducing a matching theory to match the UAVs and IoT devices.

Abstract: An actuator includes: a housing having a cable outlet, a driver, an output rotor, a first cable and a second cable. The driver is disposed inside the housing. The output rotor is configured to be driven to rotate forward or backward by the driver, and has a fitting part. A first end of the first cable and a first end of the second cable fit to the fitting part, and a second end of the first cable and a second end of the second cable extend out of the housing through the cable outlet. The output rotor is configured to rotate forward to drive the first cable through the fitting part, and is configured to rotate backward to drive the second cable through the fitting part.

Abstract: The disclosure discloses an air purification device with an adjustable air outlet direction, including a purifier body and an air outlet island. The air outlet island including an island body, a shaft sleeve fixing bracket and a lifting driving assembly is arranged on the purifier body in a lifting structure; the middle of the island body is provided with a lifting driving assembly; the island body is arranged on the shaft sleeve fixing bracket and slidably connected with the shaft sleeve fixing bracket; a top surface of the island body is provided with a top air outlet grille; and a side surface of the island body is provided with a side air outlet grille. The disclosure can realize a variety of different air supply modes, thereby effectively increasing the circulation of the ambient air and improving the comfort of the indoor space.

Abstract: A method is provided that includes: creating a plurality of first model instances of a first service model to be deployed; allocating an inference service for each of a plurality of first model instances from the plurality of inference services; calling, for each first model instance, a loading interface of the inference service allocated for the first model instance to mount a weight file; determining, in response to a user request for a target service model, a target model instance from a plurality of model instances of the target service model to respond to the user request; and calling a target inference service allocated for the target model instance to use computing resources configured for the target inference service to run, in the target model instance, a base model mounted with a target weight file, and obtain a request result of the user request.

Abstract: This application provides a pedestrian detection method, a method for training a pedestrian detection model, an electronic device, and a computer-readable storage medium. The pedestrian detection method includes: acquiring an image to be recognized; inputting the image into a multi-task recognition network to acquire a predicted pedestrian location and a predicted pedestrian attribute in parallel; and correlating the predicted pedestrian location and the predicted pedestrian attribute to output a detection result. The pedestrian detection method utilizes the multi-task recognition network to acquire the predicted pedestrian location and the predicted pedestrian attribute in parallel, and the detection result containing the predicted pedestrian location and the predicted pedestrian attribute is acquired only by inputting the image to be recognized once, thereby improving detection efficiency, quickly obtaining the detection result and saving device resources.

Abstract: Provided herein are tricyclic fused pyrimidine compounds, and pharmaceutically acceptable salts thereof. Methods of use, and pharmaceutical compositions of these compounds are disclosed.

Abstract: Provided herein are compositions and systems for use in polymerase-dependent, nucleotide transient-binding methods. The methods are useful for deducing the sequence of a template nucleic acid molecule and single nucleotide polymorphism (SNP) analyses. The methods rely on the fact that the polymerase transient-binding time for a complementary nucleotide is longer compared to that of a non-complementary nucleotide. The labeled nucleotides transiently-binds the polymerase in a template-dependent manner, but does not incorporate. The methods are conducted under any reaction condition that permits transient binding of a complementary or non-complementary nucleotide to a polymerase, and inhibits nucleotide incorporation.

Abstract: A grinding block suitable for different radians, which relates to a grinding block technique, and comprises a grinding block body, at least one soft shaft set in the grinding block body, connecting grooves set on both sides of the grinding block body and a grinding block set at the bottom of the grinding block body. The soft shaft comprises a soft shaft body and a stable shaft fit at both ends of the stable shaft. A positioner is set at a stable shaft end away from the soft shaft body and several Positioning Ribs I1 are spaced in the soft shaft body. By setting the shaft in the grinding block body and supporting the block body, the stability of the grinding block body after bending and deformation can be ensured.

Abstract: A crystal form X of 3?-hydroxy-3?-methyl-21-(4-cyano-1H-pyrazol-1?-yl)-19-nor-5?-pregnan-20-one, a preparation method of said crystal form and an application thereof in preparing a drug for treatment of central nervous system disease.