Abstract: The present disclosure provides a liftable sight assembly and an optic sighting device. The liftable sight assembly includes a base, a sight block and an operation component. A receiving space is formed in the base. A lifting channel is also formed in the base. The lifting channel extends downward from an upper surface of the base to communicate with the receiving space. An operation hole communicating with the receiving space is formed on a lateral surface of the base. The sight block is movably mounted in the receiving space. The sight block includes an aiming portion. The aiming portion extends to the upper surface of the base through the lifting channel. The operation component is mounted in the operation hole and extends to a position adjacent to the sight block. The operation component is configured to cooperate with the sight block to move the sight block in the receiving space.

Abstract: A portable fan includes a shell assembly, a fan, a power module and a retractable cable module. The shell assembly is provided with a cable outlet, the fan is arranged on the shell assembly, and the shell assembly is provided with an air outlet for air outgoing of the fan. The power module is arranged on the shell assembly and configured to supply power to the fan. The retractable cable module is arranged on the shell assembly and includes a cable body and a butt joint connected to one end of the cable body, and a width of the butt joint is not greater than a width of the cable outlet. The cable body is capable of retracting into the cable outlet to be accommodated in the shell assembly, or extending out of the shell assembly to butt the butt joint to an external electronic device and supply power to the external electronic device through the power module.

Abstract: A portable fan includes a shell assembly, a fan, a power module and a retractable cable module. The shell assembly is provided with a cable outlet, the fan is arranged on the shell assembly, and the shell assembly is provided with an air outlet for air outgoing of the fan. The power module is arranged on the shell assembly and configured to supply power to the fan. The retractable cable module is arranged on the shell assembly and includes a cable body and a butt joint connected to one end of the cable body, and a width of the butt joint is not greater than a width of the cable outlet. The cable body is capable of retracting into the cable outlet to be accommodated in the shell assembly, or extending out of the shell assembly to butt the butt joint to an external electronic device and supply power to the external electronic device through the power module.

Abstract: The invention discloses a switch short-circuit fault-tolerant control method and a system for magnetic bearing system, which belongs to the field of magnetic bearing control. N-axis magnetic bearing contains 2N H half-bridge topologies, 2N windings, and 1 DC voltage source. The current and modulation wave of each winding are monitored in real time. When a switch short-circuit fault occurs, the above data help to identify the faulty switches. By introducing the physical model of the electromagnetic force of the magnetic bearing, winding currents can be redistributed and the required electromagnetic force can be reconstructed to ensure rotor suspension and avoid serious faults such as rotor falling. This method can effectively prevent the magnetic bearing system from being destabilized when the switch short-circuit fault occurs, prevent the rotor from falling, and enable the magnetic bearing system to have the ability to operate with switch short-circuit fault tolerance.

Abstract: An inductor and a method for manufacturing the same are provided. The inductor includes a magnetic packaging structure, a coil embedded in the magnetic packaging structure, two extending wires connected to two ends of the coil and two encapsulation materials. The magnetic packaging structure includes a surface and two cavities on the surface. Each extending wire includes a bending part, a pin part and a fixture part connected to one another in sequence. The bending part extends to the surface from the coil and penetrates through the surface to be exposed to the outside of the magnetic packaging structure. The pin part on the surface extends to one of the cavities from the bending part. The fixture part extends to a bottom surface along with a side wall of the cavities. The encapsulation materials are disposed inside the cavities and cover the fixture part.

Abstract: A handheld fan includes a housing, a fan module, a power module, a first circuit board, and a retractable cable module.

Abstract: Provided are an optical waveguide and an optical waveguide sight, relating to optics technical field. In the optical waveguide sight, a light source and a collimating element are sequentially arranged along an in-coupling channel of a non-pupil-expansion optical waveguide. The collimating element is configured to collimate light beam emitted from light source, forming first parallel light beam, which is transmitted to the in-coupling region. The non-pupil-expansion optical waveguide is configured to redirect and transmit the first parallel light beam to an out-coupling region thereof to form second parallel light beam that is emitted to human eyes. The non-pupil-expansion optical waveguide enables efficient transmission and expansion of optical path with compact structure, broadening effective observation field of view while maintaining small footprint.

Abstract: A reticle adjusting structure includes a reticle plate, a beam combination lens, and a magnification variation lens set arranged in sequence along a visible-light optical axis, and a display module arranged outside of the visible-light optical axis. The beam combination lens includes a first light entry surface and a second light entry surface that are arranged opposite to each other and respectively face a visible light signal incidence direction and the display module. A visible light signal of a target field of view passes through the reticle plate to get incident on the first light entry surface, and is then transmitted to the magnification variation lens set. The reticle plate, the beam combination lens, the magnification variation lens set and the display module are interconnected together to form an integrated lens set that is collectively movable together, in order to realize collective adjustment during a reticle adjusting course.

Abstract: A phage and its use in compensating soil nitrogen fixation: Klebsiella pneumoniae phage ?YSZKA, wherein the method has solved some problems of conventional azotobacters, such as high cost, interspecific competition and limited range of application. Through phage transplantation, the efficiency of microbial nitrogen fixation in soil can be improved, and thus, more nitrogen sources may be provided for the nitrogen cycle and plant growth in ecosystems. Also, a new solution is provided for the nitrogen sequestration process of soil in saline-alkali lands, tea plantations and pesticide-polluted sites in China.

Abstract: Techniques are described for improved eye-tracking through the combination of multiple sensor modalities. Embodiments of the present disclosure may include a wearable device (e.g., artificial-reality device) comprising an eye-tracking module that tracks the positions of either or both of the wearer's eyes based on image data of the eye(s) in addition to other sensor data. The additional sensor data may include, for instance, a depth sensor, an inertial sensor, a face-tracking system, or combinations thereof.

Abstract: A reticle adjusting structure includes a reticle plate, a beam combination lens, and a relay lens assembly arranged in sequence along a visible-light optical axis, and a display module arranged outside of the visible-light optical axis. The beam combination lens includes a first light entry surface and a second light entry surface that are arranged opposite to each other and respectively face a visible light signal incidence direction and the display module. A visible light signal of a target field of view passes through the reticle plate to get incident on the first light entry surface of the beam combination lens, and is then transmitted to the relay lens assembly. The reticle plate, the beam combination lens, the relay lens assembly and the display module are interconnected together to form an integrated lens set that is collectively movable together, in order to realize collective adjustment during a reticle adjusting course.

Abstract: A handheld fan includes a housing, a fan module, a power module, and a retractable cable module. The fan module is disposed in the housing, the power module is disposed in the housing and configured to supply power to the fan module, the retractable cable module is disposed in the housing and includes a cable retractable relative to the housing to be withdrawn into the housing or extended out of the housing, and the cable is configured to connect to an external electronic device, and supply power to the external electronic device through the power module. When a user carries the handheld fan and has a charging need, the cable is capable of being pulled out of the housing of the handheld fan, and connected to the external electronic device including a mobile phone. The power module is configured to supply power to the external electronic device.

Abstract: Provided are ceramic foams. The ceramic foams may have a hierarchical pore gradient. The ceramic foams may be silica aerogels. The ceramic foams may be made by reaction of one or more precursors in the presence of an inert gas generated by a pore-forming gas-forming additive. The ceramic foams may be used as insulating materials.

Abstract: Systems and methods for a self-adjusting vehicle mirror. The mirror automatically locates the face of the driver or another passenger, and orients the mirror to provide the driver/passenger face with a desired view from the mirror. The mirror may continue to reorient itself as the driver or passenger shifts position, to continuously provide a desired field of view even as he or she changes position over time. In certain embodiments, the mirror system of the disclosure can be a self-contained system, with the mirror, mirror actuator, camera, and computing device all contained within the mirror housing as a single integrated unit.

Abstract: Apparatuses, systems, and techniques are described to determine locations of objects using images including digital representations of those objects. In at least one embodiment, a gaze of one or more occupants of a vehicle is determined independently of a location of one or more sensors used to detect those occupants.