Abstract: A fixing apparatus for holding a circuit board in place includes a cover plate, a base for supporting the circuit board thereon, a connecting assembly for hinge-coupling a first end of the cover plate to the base, and a latching assembly for latching a second end of the cover plate to the base. The circuit board is held in place between the base and the cover plate.

Abstract: An arc-preventing fast-breaking surge protection device is disclosed. In one of implement, surge protection device includes an arc-preventing assembly consisted of an arc-preventing catapult and an elastic element, comprising a voltage sensitive assembly, a response switch assembly, a thermosensitive element, an inner shell and an outer cover. The voltage sensitive assembly is tightly coupled with the response switch assembly.

Abstract: Disclosed herein is a particle comprising a first effector element covalently bonded to a nanoparticle via a first orthogonal moiety and a second effector element covalently bonded to the nanoparticle via a second orthogonal moiety, wherein the first orthogonal moiety and the second orthogonal moiety have different chemical structures. The first effector element and the second effector element may be, for example, a targeting agent, a therapeutic agent, and a diagnostic agent. In certain embodiments, the nanoparticle is a liposome. Methods for preparing functionalized nanoparticles, including functionalized liposomes, are also described.

Abstract: The present invention provides methods for catalyzing the conversion of an olefin to any compound containing one or more cyclopropane functional groups using heme enzymes. In certain aspects, the present invention provides a method for producing a cyclopropanation product comprising providing an olefinic substrate, a diazo reagent, and a heme enzyme; and admixing the components in a reaction for a time sufficient to produce a cyclopropanation product. In other aspects, the present invention provides heme enzymes including variants and fragments thereof that are capable of carrying out in vivo and in vitro olefin cyclopropanation reactions. Expression vectors and host cells expressing the heme enzymes are also provided by the present invention.

Abstract: An absorption type near-infrared filter comprising a first multilayer film, a second multilayer film, and an absorption film comprising an infrared absorbing dye with a weight percentage between 1% and 3%, wherein in the infrared band, the difference between the wavelength with the transmittance at 80% of the absorption film and the wavelength with the reflectivity at 80% of the first multilayer film ranges between 130 nm and 145 nm; the difference between the wavelength with the transmittance at 50% of the absorption film and the wavelength with the reflectivity at 50% of the first multilayer film ranges between 75 nm and 90 nm; the difference between the wavelength with the transmittance at 20% of the absorption film and the wavelength with the reflectivity at 20% of the first multilayer film ranges between 25 nm and 45 nm.

Abstract: A three-port bidirectional DC-DC converter for grid-interactive renewable energy source system applications. The three-phase topology is suitable for residential power requirements. The control of the backup battery system and the renewable energy source system are naturally decoupled. In addition, the port interface with the renewable energy is current type, which can implement maximum power point tracking (MPPT) and soft switching under wide variations in the renewable energy source terminal voltage.

Abstract: A fixing apparatus for holding a circuit board in place includes a cover plate, a base for supporting the circuit board thereon, a connecting assembly for hinge-coupling a first end of the cover plate to the base, and a latching assembly for latching a second end of the cover plate to the base. The circuit board is held in place between the base and the cover plate.

Abstract: Embodiments of the disclosure provide methods and systems for processing transportation requests. The method can include receiving, from a terminal device, a transportation request in a district. The method can also include determining a first queue associated with a queuing zone for placing the transportation request, the transportation request having a first estimated waiting time before being processed in the first queue. The method can further include determining a second queue associated with the queuing zone, the transportation request having a second estimated waiting time before being processed in the second queue, wherein the second estimated waiting time is shorter than the first estimated waiting time. The method can also include providing to the terminal device information related to the second queue.

Abstract: Embodiments of the disclosure provide methods and systems for predicting wait time of a transportation service request. The method includes receiving, from a terminal device, the transportation service request. The method further includes determining, by a processor, a first queue position of the transportation service request at a first time point. The method also includes determining, by the processor, a second queue position of the transportation service request at a second time point. The method also includes determining, by the processor, a request processing speed based on the first and second queue positions and the first and second time points. The method also includes determining, based on the request processing speed and the second queue position of the transportation service request, the predicted wait time. The method also includes providing, to the terminal device, the predicted wait time of the transportation service request.

Abstract: Methods and systems for providing transportation service are provided. The method can include detecting, by at least one processor, a request queue associated with an area. The method can further include receiving transportation service requests, from remote terminal devices, to be placed in the request queue. The method can also include determining, by the at least one processor, a number of the transportation service requests for the request queue. The method can further include activating, by the at least one processor, the request queue in response to the determined number being greater than an activation threshold; and providing transportation service according to respective positions of the transportation service requests in the activated request queue.

Abstract: Embodiments of the disclosure provide methods and systems for providing transportation service. The method can include receiving, from a remote passenger terminal, a transportation service request in a district. The method can further include detecting that the transportation service request is within a first queuing zone, the first queuing zone associated with at least one first queuing condition. The method can also include placing the transportation service request in a first request queue associated with the first queuing zone based on a determination that the transportation service request meets the first queuing condition.

Abstract: The present invention provides methods for catalyzing the conversion of an olefin to any compound containing one or more cyclopropane functional groups using heme enzymes. In certain aspects, the present invention provides a method for producing a cyclopropanation product comprising providing an olefinic substrate, a diazo reagent, and a heme enzyme; and admixing the components in a reaction for a time sufficient to produce a cyclopropanation product. In other aspects, the present invention provides heme enzymes including variants and fragments thereof that are capable of carrying out in vivo and in vitro olefin cyclopropanation reactions. Expression vectors and host cells expressing the heme enzymes are also provided by the present invention.

Abstract: A circuit includes first and second half bridges, a first inductor, a second inductor, and a main inductor. The half bridges each include a high side switch, a low side switch, and a gate driver configured to apply switching signals to the high side switch and the low side switch. The first inductor has one side electrically connected to an output node of the first half bridge between the high side switch and the low side switch. The second inductor has one side electrically connected to an output node of the second half bridge between the high side switch and the low side switch. The main inductor is coupled to a node between the other sides of the first and second inductors. The main inductor has a greater inductance than each of the first and second inductors, and the first and second inductors are inversely coupled to one another.

Abstract: In some examples, a system comprises a first component; a second component configured to receive signals from the first component via one or more wires; and a controller. In at least some examples, the controller is coupled to the one or more wires and is trained with a classification model to distinguish between signals indicating arc events and signals not indicating arc events. In at least some example, the controller is further configured to: receive the signals; extract features that are at least partially related to the received signals; classify the extracted features using the classification model; determine an occurrence of the arc event based on the classification; and provide an output signal indicating an arc event.

Abstract: The present invention discloses a method and a system for checking revocation status of digital certificates in a virtualization environment.

Abstract: Methods and systems for providing transportation service are provided. The method can include receiving, from a remote passenger terminal, a transportation service request in an area. The method can further include detecting a first queue and a second queue associated with transportation services in the area. A first estimated wait time for the transportation service request to be processed in the first queue may be shorter than a second estimated wait time for the transportation service request to be processed in the second queue. The method can also include providing, to the remote passenger terminal, an option for the transportation service request to be placed in the first queue or the second queue, and placing the transportation service request in the first queue or the second queue in response to a user selection received from the remote passenger terminal.

Abstract: Embodiments of the disclosure provide methods and systems for providing transportation service. The method can include receiving, from a remote passenger terminal, a transportation service request in an area and receiving, from at least one service vehicle in the area, vehicle information of the at least one service vehicle. The method can further include assigning, via a processor, the transportation service request to a queue. The method can also include determining, via the processor, an estimated waiting time for the transportation service request to be fulfilled based on the transportation service request, the vehicle information, and a status of the queue, and generating, via the processor, an indication to the remote passenger terminal according to the estimated waiting time.

Abstract: A circuit includes an electronic component package that comprises at least a first lead, a III-N device in the electronic component package, a gate driver, and a ferrite bead. The III-N device comprises a drain, gate, and source, where the source is coupled to the first lead. The gate driver comprises a first terminal and a second terminal, where the first terminal is coupled to the first lead. The ferrite bead is coupled between the gate of the III-N transistor and the second terminal of the gate driver. When switching, the deleterious effects of the parasitic inductance of the circuit gate loop are mitigated by the ferrite bead.

Abstract: The present invention discloses a method and a system for checking revocation status of digital certificates in a virtualization environment.