Abstract: A method may include obtaining a feedback or a reference value of a tube voltage applied to a radiation source of a radiation device for generating radiation rays. The method may also include determining, based on the feedback or the reference value of the tube voltage, a specific value of a focusing parameter associated with a focusing device of the radiation device. The method may further include causing the focusing device to shape a focus of the radiation rays according to the determined value of the focusing parameter. The focus of the radiation rays may satisfy an operational constraint under the specific value of the focusing parameter.

Abstract: An efficient and low-energy ship CO2 capture-membrane desorption-mineralization fixation system, comprising a cooler, a fan, an absorption tower, a CO2-rich solution pump, a plurality of hollow fiber membrane contactors, and a CO2-lean solution pump, which are connected one by one to form a queue. The beginning of the queue is connected to a marine diesel engine, and the end of the queue is connected to the absorption power again. The hollow fiber membrane contactors are arranged in parallel. The present invention uses a CO2 mineralization fixation by seawater as the driving force for the regeneration of CO2 from the CO2-rich solution. This system and method can solve the problems existing in the existing ship CCUS technology with zero CO2 regeneration energy consumption, and easier and safer CO2 storage in the ocean.

Abstract: Embodiments of the invention provide an intelligent device and a method for controlling a boot screen of the intelligent device, applicable to the intelligent device supporting video hardware decompression. The method comprises steps of: completing hardware initialization operation, and storing a preset image in the first storage area, thereby enabling the image layer to display the preset image; starting a system kernel which controls the video driver module, and starting the video layer through the video driver module; reading the corresponding preset image in the first storage area, converting the preset image into video data, and writing the video data into the second storage area, thereby enabling the video layer to display the video data; and starting an application access to the system. During the whole startup process of the intelligent device, the contents displayed on a screen are all seamlessly connected, so that a phenomenon of black screen does not occur.

Abstract: The present disclosure provides an arcing detection device. The arcing detection device may include a detection coil and a processing circuit operably connected to the detection coil. The detection coil may be configured to detect a current variation of a system. The processing circuit may be configured to determine information of an arcing event of the system based on the current variation of the system. The information of the arcing event of the system may include a position where the arcing event occurs in the system.

Abstract: The present disclosure provides an arcing detection device. The arcing detection device may include a detection coil and a processing circuit operably connected to the detection coil. The detection coil may be configured to detect a current variation of a system. The processing circuit may be configured to determine information of an arcing event of the system based on the current variation of the system. The information of the arcing event of the system may include a position where the arcing event occurs in the system.

Abstract: Embodiments of the disclosure provide a micro-frontend system, a sub-application loading method, an electronic device, a computer program product and a computer-readable storage medium. The micro-frontend system includes: a routing registration service, a command line tool and a micro-frontend running framework.

Abstract: A semiconductor device for use in an optoelectronic integrated circuit; the device comprising: a group four substrate, a waveguide, and a group III/V multilayer stack; wherein the group III/V multilayer stack comprises a quantum component for producing light for the waveguide; wherein the waveguide comprises a material with a deposition temperature below 550 degrees Celsius and a refractive index of any value between 1.3 and 3.8.

Abstract: A method may include obtaining a feedback or a reference value of a tube voltage applied to a radiation source of a radiation device for generating radiation rays. The method may also include determining, based on the feedback or the reference value of the tube voltage, a specific value of a focusing parameter associated with a focusing device of the radiation device. The method may further include causing the focusing device to shape a focus of the radiation rays according to the determined value of the focusing parameter. The focus of the radiation rays may satisfy an operational constraint under the specific value of the focusing parameter.

Abstract: Disclosed herein is a semiconductor device comprising: a silicon substrate; a germanium layer; and a buffer layer comprised of at least one layer of III-V compound, formed directly on silicon; at least one layer containing III-V compound quantum dots wherein one or more facets are formed using focused ion beam etching such that the angle between the plane of the facet is normal to the plane of growth.

Abstract: An apparatus for real-time monitoring of groundwater level and soil moisture of a gully head landfill area includes: a groundwater observation well set up in a monitoring area; a drop-in liquid level transmitter placed in the groundwater observation well and configured to sense a change of groundwater level and transmit data to an environmental supervision cloud platform (ESCP) through a data collection module; a plurality of soil moisture transmitters arranged in layers on a wall of the groundwater observation well and configured to sense soil moisture; a data collection module configured to receive data from the drop-in liquid level transmitter and transmit the collected signal to an ESCP; and an environmental monitoring host configured to receive data from the soil moisture transmitters and transmit the data to an environmental monitoring cloud platform (EMCP). A user can view real-time data by remotely logging in to the ESCP and EMCP.

Abstract: The invention provides an intelligent device and a method for controlling a boot screen of the intelligent device, applicable to the intelligent device supporting video hardware decompression. The method for controlling the boot screen of the intelligent device specifically comprises steps of: completing hardware initialization operation by the intelligent device, and storing a preset image in the first storage area, thereby enabling the image layer to display the preset image; starting a system kernel which controls the video driver module, and starting the video layer through the video driver module; reading the corresponding preset image in the first storage area, converting the preset image into video data, and writing the video data into the second storage area, thereby enabling the video layer to display the video data; and starting an application access to the system.

Abstract: A method may include obtaining a feedback or a reference value of a tube voltage applied to a radiation source of a radiation device for generating radiation rays. The method may also include determining, based on the feedback or the reference value of the tube voltage, a specific value of a focusing parameter associated with a focusing device of the radiation device. The method may further include causing the focusing device to shape a focus of the radiation rays according to the determined value of the focusing parameter. The focus of the radiation rays may satisfy an operational constraint under the specific value of the focusing parameter.

Abstract: The present disclosure provides an arcing detection device. The arcing detection device may include a detection coil and a processing circuit operably connected to the detection coil. The detection coil may be configured to detect a current variation of a system. The processing circuit may be configured to determine information of an arcing event of the system based on the current variation of the system. The information of the arcing event of the system may include a position where the arcing event occurs in the system.

Abstract: A semiconductor device comprising a nominally or exactly or equivalent orientation silicon substrate on which is grown directly a <100 nm thick nucleation layer (NL) of a III-V compound semiconductor, other than GaP, followed by a buffer layer of the same compound, formed directly on the NL, optionally followed by further III-V semiconductor layers, followed by at least one layer containing III-V compound semiconductor quantum dots, optionally followed by further III-V semiconductor layers. The NL reduces the formation and propagation of defects from the interface with the silicon, and the resilience of quantum dot structures to dislocations enables lasers and other semiconductor devices of improved performance to be realized by direct epitaxy on nominally or exactly or equivalent orientation silicon.

Abstract: Disclosed is a method for preparing polylactone by ring opening, belonging to the technical fields of organic catalysis and polymer materials. The invention proposes a new catalytic mechanism, wherein an organic alcohol is used as an initiator to initiate ring opening polymerization of a cyclic monomer under the catalysis of an organic catalyst to obtain a polylactone; and the catalyst is a pyridinium salt. The present invention has the advantages of non-toxic reaction, simple conditions and controllable process; further, the invention can obtain a narrow molecular weight distribution in the absence of solution polymerization, and can effectively inhibit the occurrence of the transesterification compared with the catalysis of 4-(N,N-dimethylamino)pyridine.

Abstract: Disclosed in the present invention is a preparation method for a polyester, relating to the technical field of organic catalysis and polymeric materials. The preparation method in the present invention comprises: (1) using pyridine and saccharin in a ratio of 1:1 to prepare pyridine saccharin salt in tetrahydrofuran at 60° C. and separating the pyridine saccharin salt out in methanol and hexane. (2) Freeing out a small amount of pyridine from the pyridine saccharin salt in a heating state, catalyzing by the pyridine saccharin salt and pyridine a cyclic lactone or a carbonate to be ring-opened and polymerized to form the polyester; and the system has no other compound residues. (3) In the presence of an alcohol initiator, catalyzing by the pyridine saccharin salt the cyclic lactone to be ring-opened and polymerized to obtain the polyester. The catalytic system can efficiently synthesize a specific polylactone.

Abstract: A method may include obtaining a feedback or a reference value of a tube voltage applied to a radiation source of a radiation device for generating radiation rays. The method may also include determining, based on the feedback or the reference value of the tube voltage, a specific value of a focusing parameter associated with a focusing device of the radiation device. The method may further include causing the focusing device to shape a focus of the radiation rays according to the determined value of the focusing parameter. The focus of the radiation rays may satisfy an operational constraint under the specific value of the focusing parameter.

Abstract: Disclosed in the present invention is a preparation method for a polyester, relating to the technical field of organic catalysis and polymeric materials. The preparation method in the present invention comprises: (1) using pyridine and saccharin in a ratio of 1:1 to prepare pyridine saccharin salt in tetrahydrofuran at 60° C. and separating the pyridine saccharin salt out in methanol and hexane. (2) Freeing out a small amount of pyridine from the pyridine saccharin salt in a heating state, catalyzing by the pyridine saccharin salt and pyridine a cyclic lactone or a carbonate to be ring-opened and polymerized to form the polyester; and the system has no other compound residues. (3) In the presence of an alcohol initiator, catalyzing by the pyridine saccharin salt the cyclic lactone to be ring-opened and polymerized to obtain the polyester. The catalytic system can efficiently synthesize a specific polylactone.

Abstract: Disclosed is a method for preparing polylactone by ring opening, belonging to the technical fields of organic catalysis and polymer materials. The invention proposes a new catalytic mechanism, wherein an organic alcohol is used as an initiator to initiate ring opening polymerization of a cyclic monomer under the catalysis of an organic catalyst to obtain a polylactone; and the catalyst is a pyridinium salt. The present invention has the advantages of non-toxic reaction, simple conditions and controllable process; further, the invention can obtain a narrow molecular weight distribution in the absence of solution polymerization, and can effectively inhibit the occurrence of the transesterification compared with the catalysis of 4-(N,N-dimethylamino)pyridine.

Abstract: Disclosed herein is a semiconductor device comprising: a silicon substrate; a germanium layer; and a buffer layer comprised of at least one layer of III-V compound, formed directly on silicon; at least one layer containing III-V compound quantum dots wherein one or more facets are formed using focused ion beam etching such that the angle between the plane of the facet is normal to the plane of growth.