Abstract: The invention discloses a method of preparing a high chiral purity lactam intermediate D comprising a step of reducing a compound C to lactam intermediate D in a solvent by hydrogenation reduction using a heavy metal catalyst and a chiral inducer. Brivaracetam can be prepared in a single step using the lactam intermediate D. The synthesis route is short, reaction conditions are mild, post-treatment is simple, reaction yield is high, chiral selectivity is good, and production cost is low. The conversion rate of the compound C in the reaction is 81%, and the DE value of the compound D is more than 99.0%, which is suitable for industrial production.

Abstract: Embodiments of this application provide a terminal device, including a middle frame, a heat source device, a first heat dissipation assembly, and a second heat dissipation assembly, where the first heat dissipation assembly is disposed on one side of the middle frame, the heat source device and the second heat dissipation assembly are disposed on the other side of the middle frame, and at least one of the first heat dissipation assembly and the second heat dissipation assembly is a graphene heat dissipation assembly.

Abstract: A method for preparing a stacked solid aluminum electrolytic capacitor is disclosed. The method includes preparation of a plurality of cores, stacking and fixing of the plurality of cores in a case and encapsulation of the case. The core is prepared through the following steps. An I-shaped aluminum foil is divided into an anode part and a cathode part by applying an insulating blocking tape, where the cathode part includes a dielectric layer, which is subjected to formation. A conductive polymer layer is formed on a surface of the cathode part, and is then impregnated with conductive colloidal graphite followed by drying to form a conductive carbon paste layer. The conductive carbon paste layer is impregnated with a conductive silver paste followed by drying to form a conductive silver paste layer. After that, a core is obtained.

Abstract: This application provides a multilayer solid aluminum electrolytic capacitor and a method for preparing the same. The multilayer solid aluminum electrolytic capacitor includes a plurality of cores, a rivet, a case, and a cover plate. The cores are stacked in sequence and fastened in the case through the rivet to form a semi-finished capacitor. The semi-finished capacitor is covered by the cover plate and then sealed to form the solid aluminum electrolytic capacitor.

Abstract: This application provides a multilayer solid aluminum electrolytic capacitor and a method for preparing the same. The multilayer solid aluminum electrolytic capacitor includes a plurality of cores, a rivet, a case, and a cover plate. The cores are stacked in sequence and fastened in the case through the rivet to form a semi-finished capacitor. The semi-finished capacitor is covered by the cover plate and then sealed to form the solid aluminum electrolytic capacitor.

Abstract: Systems and apparatuses include a hydraulic suspension system including a front suspension actuator, and a front suspension pressure sensor associated with the front suspension actuator; a tire inflation system; and one or more processing circuits comprising one or more memory devices coupled to one or more processors, the one or more memory devices configured to store instructions thereon that, when executed by the one or more processors, cause the one or more processors to: determine a dynamic weight based on information received from the front suspension pressure sensor of the hydraulic suspension system, determine a current front axle lead ratio based on the dynamic weight, determine a target front axle lead ratio, and control operation of the tire inflation system to adjust from the current front axle lead ratio to the target front axle lead ratio.

Abstract: The invention discloses a method of preparing a high chiral purity lactam intermediate and brivaracetam. The invention provides a method of preparing a lactam intermediate compound represented by molecular formula D, the method comprising a step of reducing a compound C to a lactam intermediate D in a solvent by hydrogenation reduction using a heavy metal catalyst and a chiral inducer. Brivaracetam can be prepared with a single step using the lactam intermediate compound represented by molecular formula D of the present invention. The synthesis route is short, reaction conditions are mild, post-treatment is simple, reaction yield is high, chiral selectivity is good, and production cost is low. The conversion rate of the compound C in the reaction is 81%, and the DE value of the compound D is more than 99.0%, which is suitable for industrial production.

Abstract: A cigarette device management system includes an information management module, and a maintenance prediction module, a device state acquisition module and a purchase statistics module which are in communication connection with it. The maintenance prediction module is built by an artificial neural network model and is configured to predict a failure interval. The device state acquisition module acquires a device operating parameter and an operating duration of the device in real time, and compares the device operating parameter with a safety parameter range. In accordance with the system, the maintenance timing of the device can be predicted, the purchase quantity of the spare part and the purchase timing of the spare part also can be predicted.

Abstract: Described herein are 1,2-dioxetanes that are useful as chemiluminescent probes, diagnostic agents, and imaging agents. Also described herein are compositions containing such compounds and methods of using the same.

Abstract: A lighting fixture is provided. The lighting fixture includes a lamp body, a light source component and an optical element; the lamp body and the optical element form a closed cavity, the light source component is accommodated in the closed cavity; the light source component includes a light source substrate and a light emitting unit located on a front surface of the light source substrate, and the optical element is located in a light emission direction of the light emitting unit; the light source substrate includes a back surface facing away from the front surface, the lamp body is formed with a heat dissipation structure, and the heat dissipation structure is in contact with the back surface of the light source substrate. The lighting fixture provided by the present disclosure has good heat dissipation performance.

Abstract: A lighting fixture is provided. The lighting fixture includes a housing, a light source assembly, a lens cover, and an anti-deformation assembly, the housing and the lens cover are connected and form a mounting space; the light source assembly is mounted in the mounting space and includes a light source panel, and a connection through-hole is provided in the light source panel; the lens cover includes a cover body and a lens unit on the cover body; and a part of the anti-deformation assembly is in the connection through-hole, and the anti-deformation assembly is connected to the lens unit to apply an action force to the lens unit to cause the lens unit to fit the light source panel.

Abstract: The present disclosure provides compositions comprising anti-LMP2 TCR-T cell populations for the treatment of EBV-associated cancers and methods of making and using same.

Abstract: The present disclosure provides a light source module and an illumination device which relate to the technical filed of illumination. The light source module includes a light source component and a connector piece. The connector piece is mechanically and electrically connected with the light source component, the connector piece has a mechanical connection portion and an electrical connection portion, the mechanical connection portion is mechanically connected with a base, and the electrical connection portion is electrically connected with a power supply source.

Abstract: Embodiments of this application provide a terminal device, including a middle frame, a heat source device, a first heat dissipation assembly, and a second heat dissipation assembly. The first heat dissipation assembly is disposed on one side of the middle frame, the heat source device and the second heat dissipation assembly are disposed on the other side of the middle frame, and at least one of the first heat dissipation assembly and the second heat dissipation assembly is a graphene heat dissipation assembly.

Abstract: A lighting apparatus includes a light source circuitry and an optical element. The light source circuitry has a light source baseplate, a plurality of light-emitting units arranged in an annular shape on the light source baseplate, and a driving circuitry located in an annular region surrounded by the light-emitting units on the light source baseplate. The optical element includes an annular optical accommodation region at an outer periphery and a driving accommodation region protruded from the optical accommodation region and is disposed in a region surrounded by the optical accommodation region. The optical accommodation region includes an optical accommodation groove which is facing the light-emitting units and configured to accommodate the light-emitting units.

Abstract: A streetlight device includes a power source portion and a lighting portion. The power source portion includes a driving power source, a power source base provided with a receiving space for receiving the driving power source, and a power source upper cover for closing the power source base. The lighting portion is connected at one end of the power source upper cover. The power source upper cover and the power source base are connected with each other through a hinge assembly. The power source upper cover is provided with a power source mounting assembly, and the driving power source is mounted onto the power source upper cover through the power source mounting assembly.

Abstract: A database replication method and apparatus for a distributed system are provided and relate to the database field. The method includes: receiving by a coordination server, a timestamp of a multi-partition transaction newly added to a first partition of a secondary cluster; determining, by the coordination server, a target timestamp for the first partition based on the received timestamp of the newly added multi-partition transaction and a stored multi-partition transaction timestamp of each partition of the secondary cluster; and sending, by the coordination server, the target timestamp to the first partition, so that the first partition executes a replication log in the first partition based on the target timestamp. In this way, the corresponding partition can execute, without waiting, a multi-partition transaction that is present in all the partitions but has not been executed, thereby avoiding data inconsistency and increasing replication efficiency.

Abstract: A progressive photon mapping method based on statistical test includes launching rays from the viewpoint to each pixel on the image plane and intersecting the three-dimensional scene to be rendered. If an intersection with diffuse surface is found on the tracing path, it is recorded as the hit point; a photon pass is performed: 31) performing photon tracing step; 32) performing photon collection processing for each hit point; 33) if the current iteration of photon pass does not need chi-square test, then performing flux accumulation and keeping the collection radius unchanged; if chi-square is required, evaluating the photon distribution quality; computing a collection radius according to the estimated photon distribution, and performing the flux accumulation in the current photon pass; 34) if the photon collection radius is reduced, then performing distributed ray tracing, generating new hit points, and go to 31), otherwise go to 31), start a new iteration of photon pass.

Abstract: A progressive photon mapping method based on statistical test includes launching rays from the viewpoint to each pixel on the image plane and intersecting the three-dimensional scene to be rendered. If an intersection with diffuse surface is found on the tracing path, it is recorded as the hit point; a photon pass is performed: 31) performing photon tracing step; 32) performing photon collection processing for each hit point; 33) if the current iteration of photon pass does not need chi-square test, then performing flux accumulation and keeping the collection radius unchanged; if chi-square is required, evaluating the photon distribution quality; computing a collection radius according to the estimated photon distribution, and performing the flux accumulation in the current photon pass; 34) if the photon collection radius is reduced, then performing distributed ray tracing, generating new hit points, and go to 31), otherwise go to 31), start a new iteration of photon pass.

Abstract: A lighting fixture is provided. The lighting fixture includes a housing, a light source assembly, a lens cover, and an anti-deformation assembly, the housing and the lens cover are connected and form a mounting space; the light source assembly is mounted in the mounting space and includes a light source panel, and a connection through-hole is provided in the light source panel; the lens cover includes a cover body and a lens unit on the cover body; and a part of the anti-deformation assembly is in the connection through-hole, and the anti-deformation assembly is connected to the lens unit to apply an action force to the lens unit to cause the lens unit to fit the light source panel.