Abstract: The present disclosure provides a truncated Evans Blue modified fibroblast activation protein inhibitor compound. The compound is formed by connecting truncated Evans Blue, a fibroblast activation protein inhibitor and a nuclide chelating group by means of connecting groups L1, L2, L3, L4 and X. The compound has the following structure shown in Formula (I), where R1 is a fibroblast activation protein inhibitor; L1 is lysine, glutamic acid, or a derivative structure thereof; L2 is —(CH2)n—, n is an integer from 0 to 30, and each —CH2— may be individually substituted or unsubstituted with —O—, —NH—, —(CO)—, —NH(CO)—, or —(CO)—NH—; L3 is —(CH2)m—, m is an integer from 0 to 30, and each —CH2— may be individually substituted or unsubstituted with —O— or —(CO)—; L4 is —(CH2)p—, p is an integer from 0 to 30, and each —CH2— may be individually substituted or unsubstituted with —O—, —NH—, —(CO)—, —NH(CO)—, or —(CO)—NH—; X is selected from N, C, O, S, or and R2 is a nuclide chelating group.

Abstract: An optical system including an enclosure including a front end and a rear end, a first pair of apertures configured to be disposed on a front plane on the front end of the enclosure and a single optical lens system disposed between the front end and the rear end of the enclosure, wherein the first pair of apertures are configured to allow sets of light rays into the enclosure through the single optical lens system to be cast on an image plane as first and second spots, the image plane being parallel to the front plane, if the first and second spots are concentrically disposed, the sets of light rays are determined to be parallelly disposed with respect to one another, otherwise the sets of light rays are determined to not be parallelly disposed with one another.

Abstract: An optical system including an enclosure including a front end and a rear end, a first pair of apertures configured to be disposed on a front plane on the front end of the enclosure and a single optical lens system disposed between the front end and the rear end of the enclosure, wherein the first pair of apertures are configured to allow sets of light rays into the enclosure through the single optical lens system to be cast on an image plane as first and second spots, the image plane being parallel to the front plane, if the first and second spots are concentrically disposed, the sets of light rays are determined to be parallelly disposed with respect to one another, otherwise the sets of light rays are determined to not be parallelly disposed with one another.

Abstract: The present disclosure relates to the fields of nuclear medicine and molecular imaging, and specifically relates to a dual-targeting compound and a preparation method and application thereof. The dual-targeting compound has the following structure shown in Formula (I). The present disclosure also provides a dual-targeting compound capable of being labeled with a radionuclide, and the compound has the following structure shown in Formula (I-1) or Formula (I-2). The dual-targeting compound of the present disclosure has high affinity for an FAP target and an integrin ?v?3 target, can realize synergistic targeting of the FAP target and the integrin ?v?3 target in tumors, and has high uptake in tumors and long retention time in tumors.

Abstract: A method for carrying out grouting between adjacent gateroads in internal-staggered split-level coal mining. A return air gateroad of a stoping face and an inlet air gateroad of a heading face are not on the same level. The return air gateroad of the stoping face is arranged along a roof of a coal seam. The inlet air gateroad of the heading face is arranged along a floor of the coal seam. There is a height difference between the return air gateroad and the inlet air gateroad in a vertical direction. During the construction process, the inlet air gateroad is excavated at a delay distance of 180-200 meters from the return air gateroad. The drilling and grouting are performed while excavating the roadway, where grouting holes are arranged in a single row. A device for implementing the method is also provided.

Abstract: An ultrahigh-pressure acid-fracturing isodiametric hose assembly, comprising a hose body and a metal joint. The metal joint comprises an inner tube, a first outer tube the inner tube, and a second outer tube. The first outer tube and the second outer tube each is an independent pressing part. An external groove is provided at an outer wall of the inner tube. An end of the first outer tube comprises an internal ridge which matches the external groove for snapping. The terminal of the inner tube comprises a connecting portion. An outer wall of the inner tube comprises a first protrusion, and an inner wall of the first outer tube comprises a second protrusion engaging with the first protrusion. The hose body is clamped between the first protrusion and the second protrusion that are engaged. An inner wall of the second outer tube comprises multiple micro-protrusions.

Abstract: Provided are a sampling object determination method and apparatus, an electronic device, and a computer-readable storage medium. The sampling object determination method includes: determining a sampling number through a sampling proportion and a total number of users of an application; determining at least one version in order of versions of the application from high to low, where a sum of a number of users of the at least one version is greater than or equal to the sampling number; and determining the sampling number of users in the users of the at least one version as sampling objects.

Abstract: The present disclosure provides a soft ground cleaning vehicle, including a main body frame; wherein each of both sides of the main body frame is arranged with a screw propulsion mechanism, and a lower portion of each of the both sides of the main body frame is arranged with a bottom frame; a power assembly is arranged on the bottom frame, and an extension frame is arranged on a lower portion of the bottom frame; the extension frame is arranged with a rotation assembly; a plastic track is arranged on the power assembly and the rotation assembly; a plurality of stand plates are arranged on an outer strip surface of the plastic track.

Abstract: Implementations relate to maintaining metadata, of a client device, stored on a remote computing device, to reduce overall network utilization and/or latency in responding to automated assistant requests received at the client device. The metadata of a client device is identified and provided to a remote computing device with a request that requires additional processing by the remote computing device. Current metadata is compared to previously provided metadata that was provided to the remote computing device with a previous request and one or more operations are generated based on the difference between the current metadata and the previous metadata. The remote computing device executes the one or more operations on a remote version of the metadata to generate a new remote version of the metadata of the client device. The remote computing device further processes the request with the new remote version of the metadata.

Abstract: An antenna apparatus includes a feeding antenna inside an electronic device and one or more antenna elements, such as a floating metal antenna, disposed on a rear cover of the electronic device. The floating metal antenna and a feeding antenna inside the electronic device may form a coupling antenna structure. The feeding antenna may be an antenna fastened on an antenna support (which may be referred to as a support antenna). The feeding antenna may alternatively be a slot antenna formed by slitting on a metal middle frame of the electronic device. The antenna apparatus may be implemented in limited design space, thereby effectively saving antenna design space inside the electronic device. The antenna apparatus may generate excitation of a plurality of resonance modes, so that antenna bandwidth and radiation characteristics can be improved.

Abstract: The present disclosure relates to a method, device and computer program product for processing a job. In a method, a first group of tasks in a first portion of the job are obtained, the first group of tasks being executable in parallel by a first group of processing devices. A plurality of priorities are set to a plurality of processing devices, respectively, based on a state of a processing resource of a processing device among the plurality of processing devices in a distributed processing system, the processing resource comprising at least one of a computing resource and a storage resource. The first group of processing devices are selected from the plurality of processing devices based on the plurality of priorities. The first group of tasks are allocated to the first group of processing devices, respectively, which process the first group of tasks for generating a first group of task results.

Abstract: A lens including a first lens group including three positive singlets and an achromatic doublet for collecting all field rays received at the first lens group while making initial corrections of spherical and color aberrations, a second lens group including a near-symmetrical group including two positive meniscus elements and two negative meniscus elements, wherein the second lens group is configured to correct distortions, a third lens group including two positive lenses with an air gap disposed between the two positive lenses, wherein the third lens group is configured to correct field curvature and astigmatism and a fourth lens group including a triplet and a positive meniscus element, wherein the fourth lens group is configured to correct spherical, coma, axial color and lateral color aberrations, wherein the lens is disposed in an order of the first lens group, the second lens group, the third lens group and the fourth lens group.

Abstract: An antenna apparatus for an electronic device having a middle frame, a cover, and a battery located between the middle frame and the cover. The antenna apparatus includes at least one group of coupling feeding elements and at least one group of radiation elements. A first radiator and a second radiator in each group of radiation elements are arranged on an inner surface of a cover. The first radiator and the second radiator are respectively located on two sides of a coupling feeding element, and the coupling feeding element is separately coupled to feed the first radiator and the second radiator.

Abstract: Disclosed is a spring mount keyboard which comprises an outer shell, a mounting plate for switches is arranged at an upper position inside the outer shell, and a plurality of positioning columns are arranged in a lower position inside the outer shell. The positioning post has a spring mounted, and a press pin connected to a top of the spring. The press pin comprises a flat plate in a middle position, the flat plate has an upper boss protruding upwards arranged above, and a lower boss protruding downwards arranged below. An upper end of the spring sleeved outside the lower boss and the end of the spring abuts a lower surface of the flat plate. In the present application, the typing experience and sound feedback of each button of the keyboard are consistent.

Abstract: A system for providing a virtual distance of a device under test, the system including a light source, a wedge shear plate including a first surface, a second surface and a wedge angle, wherein the second surface is disposed at the wedge angle with respect to the first surface and the wedge shear plate is configured to be disposed between the device under test and the light source, a first detector configured for receiving a first interference pattern formed as a result of the light source being disposed through and reflected by the first surface and the second surface of the wedge shear plate and a second detector configured for receiving a second interference pattern formed as a result of the light source being disposed through and reflected by the first surface and the second surface of the wedge shear plate.

Abstract: A system for calibrating an equipment, the system including a beam splitter; a first reticle configured to be removably attached to the equipment; and an image capture device including an image plane, wherein an image of the first reticle is configured to be received by way of the beam splitter at the image plane along an optical axis of the beam splitter, wherein the orientation as indicated by the first reticle is compared to an orientation of the image plane and if the orientation as indicated by the first reticle differs from the orientation of the image plane, the equipment is rotated about the optical axis of the beam splitter such that the orientation as indicated by the first reticle matches the orientation of the image plane.

Abstract: A system for providing an object distance of a device under test (DUT), the system including a first lens, a second lens, an optical pinhole disposed between the first lens and the second lens, a detector and a pair of gratings disposed between the second lens and the detector, the detector configured for receiving a Moiré pattern formed as a result of light from the DUT being disposed through the first lens, the optical pinhole, the second lens and the pair of gratings, wherein the object distance is determined based on the Moiré pattern and one or more properties of the pair of gratings.

Abstract: A method for providing an object distance of a device under test (DUT) using a system including a first lens, a second lens, an optical pinhole disposed between the first lens and the second lens, a detector, a pair of gratings disposed between the second lens and the detector, the detector configured for receiving a Moiré pattern formed as a result of light from of the DUT being disposed through the first lens, the optical pinhole, the second lens and the pair of gratings, the method including obtaining the Moiré pattern using the detector and determining the object distance based on the Moiré pattern and one or more properties of the pair of gratings.

Abstract: An antenna includes a first radiator having a first end and a second end, where the second end or a middle position of the first radiator is grounded; a second radiator having a third end and a fourth end, the fourth end is disposed away from the first end relative to the third end, and the second end or a middle position of the second radiator is grounded; a feeding circuit configured to feed the first radiator and the second radiator, at the first end of the first radiator and the third end of the second radiator; and a tuning circuit configured to selectively connect the feeding circuit to the first end of the first radiator or the third end of the second radiator to feed the first radiator or the second radiator.

Abstract: A method for providing a virtual distance of a device under test using a system including a light source, a wedge shear plate, a first detector and a second detector, wherein the wedge shear plate is disposed between the device under test and the light source, the first detector configured for receiving a first interference pattern formed as a result of the light source being disposed through and reflected by the wedge shear plate, and the second detector configured for receiving a second interference pattern formed as a result of the light source being disposed through and reflected by the wedge shear plate, the method including obtaining the first interference pattern using the first detector, obtaining the second interference pattern using the second detector and determining the virtual distance based on the first interference pattern, the second interference pattern, the light source and the wedge shear plate.