Abstract: Meta-lens based ocular imaging, near-eye display, and eye-tracking systems are described. The systems can include a single focusing optic and an integrated circuit that provides illumination light and includes an imaging array. The focusing optic includes meta-atoms formed on a substrate. The systems may have no moving parts and achieve imaging or image-projection fields-of-view approaching or exceeding 180 degrees. Because of their low part count, the systems can be robust and have a very small form factor.

Abstract: A wide field-of-view sensor or projector includes a transparent substrate with one or more apertures on one side, and one or more chip stacks joined to the opposite side. Each chip stack includes a flat optics layer (e.g., metasurface), at least one spacer layer, an optional filter layer, and either an image sensor or a light source. In one example, two apertures and two corresponding chip stacks are provided; both chip stacks include image sensors but different metasurfaces and filters to capture different information from the scene. In an alternative embodiment, the two chip stacks include a light source and an image sensor, to function as a light projector and a light receiver, respectively. In other examples, two apertures and a single chip stack are provided, where the single chip stack include two metasurface and/or two filters corresponding to the two apertures.

Abstract: The present disclosure discloses a time service and positioning network system for an underground chain-shaped large space in a coal mine. The system adopts a base station-level network internal time synchronization method which takes an optical fiber time service as a main part and takes a satellite time service as an auxiliary part to construct a time service and positioning network system with an unified time within the ad-hoc network base stations, based on the ad-hoc network base stations linearly arranged in the underground chain-shaped large space in the coal mine. Through the network construction, the network stabilization and the network application, the system unifies the time reference of the base station-level network and improves the positioning accuracy of the network application by utilization of the base station-level network internal time synchronization method.

Abstract: The present disclosure discloses a time service and positioning network system for an underground chain-shaped large space in a coal mine. The system adopts a base station-level network internal time synchronization method which takes an optical fiber time service as a main part and takes a satellite time service as an auxiliary part to construct a time service and positioning network system with an unified time within the ad-hoc network base stations, based on the ad-hoc network base stations linearly arranged in the underground chain-shaped large space in the coal mine. Through the network construction, the network stabilization and the network application, the system unifies the time reference of the base station-level network and improves the positioning accuracy of the network application by utilization of the base station-level network internal time synchronization method.

Abstract: The present invention discloses a Fe—Al-based metal porous membrane and a preparation method thereof, which relate to the technical field of industrial gas-solid and liquid-solid separation and purification, and mainly address problems in the prior art, such as cracking-prone and peeling of a membrane layer of an existing Fe—Al-based metal porous membrane during its preparation and use. The preparation method of the present invention comprises the steps of: adding a Fe—Al-based metal powder and a metal fiber powder into an organic-additive-added water-based solvent, and mixing them into a slurry; casting the slurry, through a casting machine, to form a membrane green body on a metal substrate layer, and letting it dry; and placing the dried membrane green body in a sintering furnace, to remove organic substances and perform high-temperature sintering and predetermined-temperature reaction synthesis.

Abstract: This application discloses a scene recognition method and apparatus, which may be applied to game scene recognition. The method includes: obtaining one or more drawing instructions, and determining a to-be-drawn target object based on a description parameter carried in the one or more drawing instructions. Based on a particular relationship between scenes and an object inside scenes, a corresponding target scene may be determined based on the target object.

Abstract: The present disclosure relates to the field of biomedicine, in particular to the use of MCM8-cGAS-STING-IFN-I signal pathway as a disease target, including the use in the preparation of an animal model of a disease or the preparation of a product for the diagnosis, prevention, or treatment of a disease. In particular, the present disclosure comprises the use of a reagent for quantitatively detecting the gene expression or protein expression or protein activity of MCM8 in the preparation of a product for the diagnosis of a disease caused by dysfunctional mitophagy or caused by abnormal activation of cGAS-STING-IFN-I signaling pathway.

Abstract: A hitting apparatus is provided, including a supporting unit, at least a linking unit, and an attaching device. The apparatus includes foldable supporting legs, an adjustable supporting rod, an adjustable hanging arm, an adjustable extension arm, connection elements, attaching elements and attaching ball. The adjustable extension arm is flexible, which can be adjusted at any direction by hand, or foreign force. The connections between connection elements are detachable and releasable upon hit by bat or other subjects. The hanging arm is engaged to the top of supporting rod, and adjustable in length and angles and easy to be detached from the support rod to become a hand held hitting training apparatus. The attaching parts of hook/loop, magnets, adhesive or rubbers holding the ball with minimum detaching releasable force required, The present invention can enhance the focus of the batter on the ball and have a clear hit on the ball.

Abstract: The invention relates to graftable polymers comprising biologically active agents and the use of such polymers in the manufacture of shaped articles, such as implantable medical devices and catheters. The graftable polymers are covalently grafted to a surface via one or more grafting moieties incorporated into the pharmaceutically-active graftable polymer. The coated articles of the invention can further comprise tie-coats, and the ratio of polymer:tie coat can be used to adjust the rate of drug elution.

Abstract: A hitting apparatus is provided, including a supporting unit, at least a linking unit, and an attaching device. The apparatus includes foldable supporting legs, an adjustable supporting rod, an adjustable hanging arm, an adjustable extension arm, connection elements, attaching elements and attaching ball. The adjustable extension arm is flexible, which can be adjusted at any direction by hand, or foreign force. The connections between connection elements are detachable and releasable upon hit by bat or other subjects. The hanging arm is engaged to the top of supporting rod, and adjustable in length and angles and easy to be detached from the support rod to become a hand held hitting training apparatus. The attaching parts of hook/loop, magnets, adhesive or rubbers holding the ball with minimum detaching releasable force required, The present invention provide batter a safer, easy adjust, use, carry around and store multi functions batting apparatus with minimum hitting resistance on ball after hitting by bat.

Abstract: A hitting apparatus is provided, including a supporting unit, at least a linking unit, and an attaching device. The apparatus includes foldable supporting legs, an adjustable supporting rod, an adjustable hanging arm, an adjustable extension arm, attaching rods or strings, and attaching ball hook/loop, magnets or adhesives. The hanging arm is engaged to the top of supporting rod, and adjustable in length and angles and easy to be detached from the support rod to become an individual hitting training apparatus. The attaching parts of hook/loop, magnets or adhesive hold the ball with attaching loop or metal tape or coating. With the holding of the ball by the hook/loop, magnet or adhesives, the present invention can be a tee free design to enhance the focus of the batter on the ball and have a clear hit on the ball. The present invention is easy to assemble, adjust, use, carry around and store.

Abstract: The invention relates to graftable polymers comprising biologically active agents and the use of such polymers in the manufacture of shaped articles, such as implantable medical devices and catheters. The graftable polymers are covalently grafted to a surface via one or more grafting moieties incorporated into the pharmaceutically-active graftable polymer. The coated articles of the invention can further comprise tie-coats, and the ratio of polymer:tie coat can be used to adjust the rate of drug elution.

Abstract: A printable, pressure-sensitive adhesive ("PSA") tape, particularly a self-wound tape, which comprises a polyester film substrate, a rubber base prime coat and an adhesive which can be fire-retardant. The PSA tape has high adhesive properties and a novel release mechanism which does not use any conventional release agents.