Abstract: Provided is a method for industrial production of spray-dried piperacillin-tazobactam powder, comprising the following steps: 1) preparing a mixed solution of piperacillin or a pharmaceutically acceptable salt thereof and tazobactam or a pharmaceutically acceptable salt thereof, and maintaining the pH value at 6.0-7.5; 2) adding a stabilizer into the solution obtained in the step 1) to give a mixed solution, wherein the stabilizer is selected from one or more of a carbohydrate, an amino acid, and a polyol; and 3) subjecting the mixed solution obtained in the step 2) to spray drying to give the spray-dried piperacillin-tazobactam powder.

Abstract: The present invention discloses donor-acceptor structured, aggregated-induced emission fluorescent compounds with deep-red (DR) or near-infrared (NIR). The present invention also shows application in bio-imaging or optoelectronic devices with the fluorescent compounds.

Abstract: Disclosed in the present invention are an electromagnetic shielding structure, a manufacturing method and a communication terminal. The electromagnetic shielding structure comprises a module substrate, which is formed with a plurality of grounding holes penetrating through the module substrate, and the plurality of grounding holes jointly define a mounting area; a device to be shielded, which is attached to the module substrate and located in the mounting area; a plurality of grounding bonding pads, which are respectively arranged in the grounding holes in a penetrating manner; and a plurality of wires, wherein the two ends of each wire are respectively connected to two different grounding bonding pads, such that the plurality of wires jointly form a shielding layer erected above the device to be shielded.

Abstract: A method for extracting palladium includes: (1) mixing a palladium-containing material with nitric acid and an alkali metal ion-containing catalyst to obtain a mixed solution, heating the mixed solution, and removing a resulting residue to obtain a palladium-containing leaching liquor; and (2) subjecting the palladium-containing leaching liquor obtained in step (1) to separative extraction to obtain metallic palladium or at least one palladium-containing product, and reusing a residual solution for step (1) in a subsequent extraction. The alkali metal ion-containing catalyst of the present disclosure can leach palladium at a higher rate than that when pure nitric acid of the same concentration is used and does not volatilize, such that the recycling of a mother liquor can be realized. The method involves simple operations, has low production costs, greatly shortens the palladium extraction time, does not lead to secondary pollution, and meets the requirements of environmental protection.

Abstract: The present disclosure provides a three-dimensionally arranged nanoparticle film and a preparation method and use thereof, and belongs to the technical field of nanophotonics. The preparation method includes the following steps: coating nanoparticles with hydrophobic molecules, and dispersing in an organic solvent to obtain a modified nanoparticle dispersion; conducting a surface treatment on a three-dimensional template to obtain a hydrophilic three-dimensional template; and adding water to a surface of the hydrophilic three-dimensional template to form a water film, adding the modified nanoparticle dispersion dropwise on a surface of the water film to conduct self-assembly, and removing the water film to obtain a three-dimensionally arranged nanoparticle film with an array structure.

Abstract: The described technology relates to determining an access permission of a host. An example method includes performing an access check by a storage server in response to receiving an access request from the host and acquiring security information associated with the host from a management server by the storage server in response to passing the access check. In addition, the method can include determining a risk score of the host by the storage server based on the security information and determining an access permission of the host by the storage server based on the risk score of the host and a risk threshold of the type of access. Beneficially, an accurate assessment of the risk of access of the host is achieved, which avoids security problems caused by the security risk of the host, while allowing the host to gain maximum access permission without compromising overall security.

Abstract: This application relates to a pulse modulation control system, device, and method. The system includes a processor based on a RISC-V open-source instruction set architecture and a pulse modulation interface module. The processor is configured to receive an operation instruction of a user, and generate a data signal based on the operation instruction. The pulse modulation interface module is connected to the processor, and is configured to receive the data signal and output a preset waveform based on the data signal. Based on the RISC-V open-source instruction set architecture, the user may customize operations, which improves efficiency and flexibility of a pulse modulation process, and optimizes power consumption.

Abstract: The described technology relates to determining an access permission of a host. An example method includes performing an access check by a storage server in response to receiving an access request from the host and acquiring security information associated with the host from a management server by the storage server in response to passing the access check. In addition, the method can include determining a risk score of the host by the storage server based on the security information and determining an access permission of the host by the storage server based on the risk score of the host and a risk threshold of the type of access. Beneficially, an accurate assessment of the risk of access of the host is achieved, which avoids security problems caused by the security risk of the host, while allowing the host to gain maximum access permission without compromising overall security.

Abstract: The present disclosure relates to the field of special electronic gases, in particular to a method for purifying electronic-grade boron trichloride. The method includes the following steps: (S.1), filling an adsorption composition into adsorbers; (S.2), vacuumizing the adsorbers to remove air from the adsorbers, and then introducing a high-purity boron trichloride gas; and (S.3), introducing a boron trichloride feed gas into the adsorbers, such that the boron trichloride feed gas is in contact with the adsorption composition, and collecting a gas flowing out of the adsorbers to obtain an electronic-grade boron trichloride gas. According to the present disclosure, coordination formed between hydrogen chloride impurities and boron trichloride can be eliminated effectively, thereby improving adsorption and purification effects of the boron trichloride.

Abstract: Embodiments of this application disclose example optical acquisition, tracking, pointing (ATP) antennas, to implement distribution of an annular Gaussian beam by using an axicon. One example optical ATP antenna includes an input light source, an axicon, and an optical imaging assembly, and central axes of the input light source, the axicon, and the optical imaging assembly coincide. The axicon is configured to: shape a first Gaussian beam emitted by the input light source into a first annular Gaussian beam, and transmit the first annular Gaussian beam to the optical imaging assembly. The optical imaging assembly is configured to: expand the first annular Gaussian beam into a second annular Gaussian beam, and transmit the second annular Gaussian beam to a lower optical path, where a diameter of the second annular Gaussian beam is greater than a diameter of the first annular Gaussian beam.

Abstract: Mechanisms for performing cross-screen movement operations in a multiple display device computer configuration are provided. An input is received, from a user interface device, that specifies a movement of a displayed element on a first display screen of the multiple display device computer configuration. A path of motion of the displayed element is calculated and compared to a junction margin of the first display screen to determine if the path of motion intersects the junction margin. In response to the path of motion intersecting the junction margin, the displayed element is placed at a first point of the junction margin. In response to receiving a subsequent input having a subsequent path of motion that intersects the junction margin, performing a cross-screen movement operation moving the displayed element to an end point of the subsequent path of motion in the second display screen.

Abstract: The present invention provides crystalline forms of (6S,7S)-6-fluoro-7-(2-fluoro-5-methylphenyl)-3-(tetrahydro-2H-pyran-4-yl)-5,6,7,8-tetrahydropyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione (“Compound I”). Also provided are related pharmaceutical compositions, methods of preparation, and methods of treating hypertrophic cardiomyopathy (HCM), heart failure with preserved ejection fraction (HFpEF), diastolic dysfunction, left ventricular hypertrophy, and other cardiac diseases.

Abstract: Disclosed in the present invention are an electromagnetic shielding structure, a manufacturing method and a communication terminal. The electromagnetic shielding structure comprises a module substrate, which is formed with a plurality of grounding holes penetrating through the module substrate, and the plurality of grounding holes jointly define a mounting area; a device to be shielded, which is attached to the module substrate and located in the mounting area; a plurality of grounding bonding pads, which are respectively arranged in the grounding holes in a penetrating manner; and a plurality of wires, wherein the two ends of each wire are respectively connected to two different grounding bonding pads, such that the plurality of wires jointly form a shielding layer erected above the device to be shielded.

Abstract: This application relates to a pulse modulation control system, device, and method. The system includes a processor based on a RISC-V open-source instruction set architecture and a pulse modulation interface module. The processor is configured to receive an operation instruction of a user, and generate a data signal based on the operation instruction. The pulse modulation interface module is connected to the processor, and is configured to receive the data signal and output a preset waveform based on the data signal. Based on the RISC-V open-source instruction set architecture, the user may customize operations, which improves efficiency and flexibility of a pulse modulation process, and optimizes power consumption.

Abstract: The present disclosure provides a three-dimensionally arranged nanoparticle film and a preparation method and use thereof, and belongs to the technical field of nanophotonics. The preparation method includes the following steps: coating nanoparticles with hydrophobic molecules, and dispersing in an organic solvent to obtain a modified nanoparticle dispersion; conducting a surface treatment on a three-dimensional template to obtain a hydrophilic three-dimensional template; and adding water to a surface of the hydrophilic three-dimensional template to form a water film, adding the modified nanoparticle dispersion dropwise on a surface of the water film to conduct self-assembly, and removing the water film to obtain a three-dimensionally arranged nanoparticle film with an array structure.

Abstract: The present disclosure describes combination therapies comprising an antagonist of Programmed Death 1 receptor (PD-1) and a Toll-like receptor 9 (TLR9) agonist that is a CpG-C type oligonucleotide, and the use of the combination therapies for the treatment of cancer.

Abstract: Techniques for managing a file system involve: receiving an event published by the file system, the event being associated with an operation on an object in the file system; determining a value of a counter corresponding to the event based on execution information of the operation; determining a target action corresponding to the value of the counter based on a trigger strategy associated with the counter, the trigger strategy defining at least one action that can be triggered by the counter; and generating an indication for causing the file system to execute the target action. Accordingly, file system management in finer granularity can be provided.

Abstract: Provided is polarization control device based on silicon waveguide and phase change material, including polarization rotation beam splitter, optical beam splitter component, phase shifter component, and polarization rotation beam combiner; input end of polarization rotation beam splitter is connected to input optical fiber; input end of first optical beam splitter is connected to output end of polarization rotation beam splitter, first output end of first optical beam splitter is connected to first phase shifter, and second output end thereof is connected to second phase shifter; input end of second optical beam splitter is connected to first phase shifter and second phase shifter, respectively, first output end of second optical beam splitter is connected to third phase shifter, and second output end of second optical beam splitter is connected to fourth phase shifter; and input end of polarization rotation beam combiner is connected to third phase shifter and fourth phase shifter, respectively.

Abstract: A gas purification system includes a dust removal filler, a fouling collection pan and a gas purification device. The dust removal filler has a plurality of rows of channels, each channel extending obliquely with respect to a vertical direction to form a windward surface, and a leeward surface, and a waveform plate. The peak portion of the waveform plate is attached to the leeward surface of the obliquely prismatic channel. During operation, dust adheres to a concave portion of a lower surface of the waveform plate and accumulates to form dust aggregates. When the gravity of the dust aggregates is greater than the adhesion force, the dust aggregates fall onto the windward surface of the channels and slide off from the windward surface of the channels.

Abstract: Disclosed is a portable rapid detection device for cognition, sleep and psychological status. The portable rapid detection device comprises a detection dial plate, an adjusting knob, woven watchbands, screw rods, sweat-absorbent linings and a sweat-absorbent quick-drying pad. The detection dial plate is of a cylindrical structure. The embedded adjusting knob is installed in the middle of the front end of the detection dial plate. The woven watchbands are installed at two ends of the detection dial plate and fixed through the screw rods. The embedded sweat-absorbent lining is installed on the inner side of the woven watchband. The sweat-absorbent quick-drying pad is installed in the middle of the bottom of the detection dial plate and fixed through magnetic attraction.