Abstract: A device and a method are disclosed for collecting and culturing fish embryos and evaluating combined toxicity of thiamethoxam and tetraconazole. An embryo collection component and an embryo culture component are provided on a base plate. The embryo collection component includes a collection tray detachably connected to a bottom of a culture tube. The embryo culture component includes a cavity plate with a stopper inside and a top plate provided with a culture well. A bottom of the culture well is provided with a leakage hole; and after the top plate is installed into the cavity plate, the stopper occludes the leakage hole. The new device is used to carry out the combined toxicity effect test of thiamethoxam and tetraconazole on zebrafish embryos, which can be used to avoid development of pesticide mixtures that have a good preventive effect but pose increased toxicity risk to the ecological environment.

Abstract: A method of preparing PAN-based carbon fibers relates to the technical field of materials. The method includes: S1. acrylonitrile, a second monomer and an unsaturated UV-sensitive cross-linking agent are mixed, an initiator is then added and a reaction is performed to obtain a meltable PAN-based copolymer; S2. the meltable PAN-based copolymer and a flow modifier are mixed to obtain a mixture, the mixture is extruded and pelletized, and then melt spinning is performed to obtain nascent fibers, the nascent fibers are stretched and annealed to obtain a PAN-based carbon fiber precursor; S3. ultraviolet irradiation is performed on the PAN-based carbon fiber precursor; S4. the PAN-based carbon fiber precursor after ultraviolet irradiation is pre-oxidized and carbonized to obtain PAN-based carbon fibers.

Abstract: The present disclosure relates to a gripper, a clamping device having the same and a mobile robot. The gripper includes a gripper arm which is configured to be connected with a driving mechanism of the clamping device, and a gripper finger which is floatably connected to the gripper arm. The gripper finger has a clamping surface. The gripper arm is driven by the driving mechanism to move so as to drive the gripper finger to clamp or release an object to be clamped. Some solutions provided in the present disclosure can solve the problem that the tray cannot be clamped up or is easy to slip off.

Abstract: The present invention discloses a fabrication method and use of a ?40 mm large-size and high-contrast fiber optic image inverter, belonging to the field of manufacturing of fiber optic imaging elements. The light-absorbing glass for preparing the ?40 mm large-size and high-contrast fiber optic image inverter consists of the following components in molar percentage: SiO2 60-69.9, Al2O3 1.0-10.0, B2O3 10.1-15.0, Na2O 1.0-8.0, K2O 3.0-10.0, MgO 0.1-1.0, CaO 0.5-5.0, ZnO 0-0.1, TiO2 0-0.1, ZrO2 0.1-1.0, Fe2O3 3.0-6.5, Co2O3 0.1-0.5, V2O5 0.51-1.5 and MoO3 0.1-1.0. The fiber optic image inverter has the advantages of low crosstalk of stray light, high resolution and high contrast.

Abstract: An electronic device may be provided with peripheral conductive housing structures, a first antenna, and a second antenna. A gap may divide the housing structures into a first segment forming an arm of the first antenna and a second segment forming an arm of the second antenna. A first feed terminal may be coupled to the first segment and a second feed terminal may be coupled to the second segment. Switchable components may be coupled in parallel between the first and second feed terminals across the gap. The switchable components may be adjusted to tune the frequency response of the first and/or second antenna. The switchable components may have a first state in which only the first feed terminal feeds the first antenna and may have a second state in which both the first and second feed terminals feed the first antenna.

Abstract: An electronic device may be provided with an antenna having a resonating element and a light source module mounted to a flexible printed circuit and a metal cowling. The module may emit light through a rear housing wall. The printed circuit may be interposed between the metal cowling and a conductive support plate in the rear housing wall. The printed circuit may include a ground trace coupled to the resonating element. A dimpled pad may couple the ground trace to the support plate. Compressive foam may be used to exert a force against the flexible printed circuit that presses the dimpled pad against the conductive support plate. The ground trace and the dimpled pad may form a return path to ground for the resonating element. The dimpled pad may occupy less height within the device than other structures such as metal springs.

Abstract: The present disclosure discloses an unpowered wearable walking assistance knee equipment with gait self-adaptivity comprising a left foot power output assembly, a right foot power output assembly, a left leg knee joint assistance execution assembly, a right leg knee joint assistance execution assembly and a driving force transmission device. The equipment of the present disclosure is based on lever principle and crank block structure principle and adopts an operation mode of combining ipsilateral parallel driving input and different sides cross driving input.

Abstract: The present disclosure provides methods and systems for vehicle verification. The method may include receiving vehicle verification information related to a vehicle to be verified from a client, wherein the vehicle verification information includes a plurality of images acquired by the client via an imaging device, and the vehicle verification information responds to at least one vehicle verification instruction. The method may further include determining a verification result of the vehicle based on the vehicle verification information.

Abstract: The orientation of imagery relative to a compass bearing may be determined based on the position of the sun or other information relating to celestial bodies captured in the image.

Abstract: Provided is a reaction cup, comprising cup walls and a cup bottom. The cup walls are provided with clamping portions, the clamping portions can allow a membrane strip to stand upright in the reaction cup, and the connecting area of the two opposite clamping portions forms an upright placement position for the membrane strip. The present invention further provides a molecular hybridization instrument used with the reaction cup, and an analyte testing method. The reaction cup can allow the membrane strip to stand upright therein, and can be opened for operation, thereby reducing the area occupied by the reaction cup on the molecular hybridization instrument, and reducing the area of the molecular hybridization instrument. A plurality of reaction cups can be placed on the molecular hybridization instrument at the same time, which increases the number of tests and improves the utilization and working efficiency of the molecular hybridization instrument.

Abstract: The orientation of imagery relative to a compass bearing may be determined based on the position of the sun or other information relating to celestial bodies captured in the image.

Abstract: In some examples, a device includes shuffling circuitry configured to receive an input unary bit stream and generate a shuffled bit stream by selecting n-tuple combinations of bits of the input unary bit stream. The device also includes stochastic logic circuitry having a plurality of stochastic computational units configured to perform operations on the shuffled bit stream in parallel to produce an output unary bit stream, each of the stochastic computational units operating on a different one of the n-tuple combinations of the bits.

Abstract: The orientation of imagery relative to a compass bearing may be determined based on the position of the sun or other information relating to celestial bodies captured in the image.

Abstract: This disclosure describes techniques for performing computational operations on input unary bit streams using one or more scaling networks. In some examples, a device is configured to perform a digital computational operation, where the device includes a plurality of input wires and a plurality of output wires. Each input wire is configured to receive a respective input bit of an encoded input value, and each output wire is configured to output a respective output bit of an encoded output value. The device also includes scaling network circuitry configured to apply a function to the encoded input value by electrically routing at least one input wire of the plurality of input wires to at least two output wires of the plurality of output wires. The device can also include hybrid binary/unary computations.

Abstract: This disclosure describes techniques for performing computational operations on input unary bit streams using one or more scaling networks. In some examples, a device is configured to perform a digital computational operation, where the device includes a plurality of input wires and a plurality of output wires. Each input wire is configured to receive a respective input bit of an encoded input value, and each output wire is configured to output a respective output bit of an encoded output value. The device also includes scaling network circuitry configured to apply a function to the encoded input value by electrically routing at least one input wire of the plurality of input wires to at least two output wires of the plurality of output wires. The device can also include hybrid binary/unary computations.

Abstract: In some examples, a device includes shuffling circuitry configured to receive an input unary bit stream and generate a shuffled bit stream by selecting n-tuple combinations of bits of the input unary bit stream. The device also includes stochastic logic circuitry having a plurality of stochastic computational units configured to perform operations on the shuffled bit stream in parallel to produce an output unary bit stream, each of the stochastic computational units operating on a different one of the n-tuple combinations of the bits.

Abstract: The orientation of imagery relative to a compass bearing may be determined based on the position of the sun or other information relating to celestial bodies captured in the image.

Abstract: The orientation of imagery relative to a compass bearing may be determined based on the position of the sun or other information relating to celestial bodies captured in the image.

Abstract: A web server monitors and receives measurements as to how long a client device takes to load or display individual items after a user first requests a web page containing the items. The measurements may be based on a duration that begins at a time between a user's navigation request and network browser's transmission of a request for a new web page. The recorded measurements received by the web server may include measurements relating to the latency experienced by the user in loading a particular item of content for a web page, such as an image, or may include the latency experienced by the user in loading an entire web page. One or more components used by the network browser, such as a network browser plug-in and or scripting language embedded in a web page, may provide one or more routines for measuring and reporting the latencies experienced by the user.

Abstract: The invention provides a thioxanthone aromatic amine compound and an organic light emitting device using the compound. The thioxanthone aromatic amine compound includes a compound expressed by formula (I) or formula (II): where Ar1 and Ar2 each are selected from ammonia compounds with structures respectively expressed by formula (III) to formula (VII), or hydrogen atom, thioxanthone aromatic amine compound of the invention has single structure, determinate molecular weight, and has better solubility and film-forming property, and also has low biochemical temperature and decomposition temperature, and stable film morphology.