Abstract: An angle grinder includes a housing, an output shaft, and a motor. The motor includes a stator assembly, a rotor assembly including a motor shaft configured to rotate about a first axis, a commutator, and a carbon brush. The commutator includes a bushing, configured to connect the commutator to the motor shaft, a plurality of commutator segments, sequentially distributed in a circumferential direction around the first axis and arranged around the bushing, and an insulating member, configured to bond the bushing and the plurality of commutator segments so as to constitute a whole.

Abstract: An electric compressor and a refrigeration device having the same are provided. The electric compressor includes: an electric motor having a stator and a rotor; a compressing mechanism having an eccentric shaft rotatably and slidably connected to the rotor and defining a compressing chamber therein, the compressing chamber being configured to perform a compression by the eccentric shaft; and a torque damping device configured to connect the rotor with the eccentric shaft, in which during the compression of the compressing chamber, a difference between a rotation angle of the eccentric shaft and a rotation angle of the rotor is a phase angle which is increased and decreased.

Abstract: A matching algorithm and device for data with different scales based on global road network features are provided. The method includes: loading data of different maps, constructing crossroad groups in each map, and extracting information on attributes of the crossroad groups; allocating, according to the importance degree of the attribute information, weights for each attribute of the crossroad groups, and comprehensively evaluating confidence values of matching between two crossroad groups in different maps; and constructing, according to the confidence values, matched road networks, calculating total confidence values of the matched road networks, and selecting a road network with the highest total confidence value as an optimal matching solution, namely a matching result.

Abstract: A method and system for constructing a transverse topological relationship and a memory are provided. In the method, lane group data in a high-definition map is acquired; for each lane group, a shared boundary line group of two adjacent lanes is sequentially extracted, and the number of parallel boundary line elements is determined; if the number is 1, a transverse topological relationship between the two adjacent lanes is not generated, otherwise the number and types of boundary line units on the parallel boundary line elements are determined; and if the number of the boundary line units is 1, the transverse topological relationship between the two adjacent lanes is generated, otherwise segmentation processing is performed on the lane group along a lane direction, and the transverse topological relationship between two adjacent lanes in each of segments, which are obtained by the segmentation processing on the lane group, is sequentially generated.

Abstract: An information processing apparatus includes: an information management unit that registers boarding information on a user regarding boarding acquired by a check-in procedure of the user and biometrics information on the user acquired in the check-in procedure in association with each other; and a display management unit that causes a display terminal to display display information in accordance with remaining time to boarding time based on the boarding information on the user identified by a comparison between target biometrics information, which is biometrics information acquired by the display terminal for the user, and registered biometrics information, which is the biometrics information registered by the information management unit.

Abstract: The invention discloses a method for increasing citrate production from genome reconstructed Aspergillus niger. The method is to insert a gene of low affinity glucose transporter, LGT1, to genome of A. niger. The expression level of LGT1 is under control of promoter Pgas. The genome reconstructed A. niger is tolerant to higher fermentation temperature and lower pH than that of the parental strain. Moreover, the production, yield and purity of product from reconstructed A. niger are higher than that of parental strain, and the fermentation time is shorter.

Abstract: The invention discloses a method for improving citric acid production by Aspergillus niger fermentation, which integrates Aspergillus niger GABA pathway succinate semialdehyde dehydrogenase SSD gene into Aspergillus niger genome to obtain recombinant Aspergillus niger strain, and uses recombinant black The Aspergillus strain ferments to produce citric acid; the expression of the succinate semialdehyde dehydrogenase SSD gene is regulated by the Pgas promoter. The method of the invention realizes the expression of succinate semialdehyde dehydrogenase SSD in Aspergillus niger to enhance the GABA pathway so as to strengthen the TCA cycle and promote the synthesis of citric acid.

Abstract: A computer-implemented method comprising: outputting questions to a user via one or more user devices, and receiving back responses to some of the questions from the user via one or more user devices; over time, controlling the outputting of the questions so as to output the questions under circumstances of different values for each of one or more items of metadata, wherein the one or more items of metadata comprise at least a time and/or a location at which a question was output to the user via the one or more user devices; monitoring whether or not the user responds when the question is output with the different metadata values; training the machine learning algorithm to learn a value of each of the items of metadata which optimizes a reward function, and based thereon selecting a time and/or location at which to output subsequent questions.

Abstract: A computer-implemented method comprising: outputting questions to a user via one or more user devices, and receiving back responses to some of the questions from the user via one or more user devices; over time, controlling the outputting of the questions so as to output the questions under circumstances of different values for each of one or more items of metadata, wherein the one or more items of metadata comprise one or more physical conditions of the user; monitoring whether or not the user responds when the question is output with the different metadata values; training the machine learning algorithm to learn a value of each of the items of metadata which optimizes a reward function, and based thereon selecting a circumstance when the user is exhibiting a particular physical condition to output subsequent questions.

Abstract: A gas turbine engine includes a compressor delivering air into a combustion section. The combustion section and the compressor are housed in a housing. An air supply system communicates through the housing to deliver air from a location between an upstream end of the compressor, and an upstream end of the combustor. A diffuser is positioned downstream of the compressor. An opening in the housing supplies air to the inlet end. The diffuser has an outer shroud and an inner shroud with intermediate vanes. The outer shroud ends at a location upstream of a downstream end of the inner shroud at locations circumferentially aligned with the inlet end. The outer shroud only ends at the upstream location at circumferential locations associated with the inlet end, but extends further downstream at other locations.

Abstract: A refrigeration cycle device includes at least a condenser, an expansion valve, an evaporator and a plurality of compressors, a sealed casing of each of the compressors is disposed with a rotary compression mechanism part in communication with a low-pressure path and a motor part configured to drive the compression mechanism part, the low-pressure path is in communication with the evaporator, each of the compressors is further provided with an oil storage cavity, and a gas discharge path of at least one compressor is connected with the sealed casing of another compressor.

Abstract: A parametric design method for a fan coil unit based on BIM (Building Information Modeling) includes steps of: determining a basic sample; parametrically modeling; setting pipe connection locations and connection sizes of a two-pipe fan coil and a four-pipe fan coil; setting component visibility; completing control settings of left-right one-click selection for the fan coil; arranging an air pipe behind an air outlet of the fan coil; producing air duct flexible connectors; producing diffusers; adding parameter controls of a “yes or no” type to a return air box, a lower return air flange, and a back to return air flange; completing production of pipes and connectors, and naming. In a heating and ventilation BIM design of building engineering, with the above method, efficiencies of designing, modeling and plotting are obviously increased.

Abstract: Fluidic devices, methods, and systems are disclosed. One system may comprises a sheath, a delivery module, and a removal module. The sheath includes a working lumen, a delivery lumen, and a removal lumen. The delivery module is configured to move a fluid from a fluid reservoir and into a body cavity through the delivery lumen. The removal module is configured to move the fluid and a particulate contained therein out of the body cavity through the removal lumen, through a filtration device that removes the particulate, and back into the fluid reservoir. One method comprises placing a distal end of sheath into a body cavity, energizing the working lumen to generate a particulate in the cavity, moving the fluid into the cavity to engage the particulate, and moving the fluid and the contaminant from the body cavity, through a filter for removing the contaminant, and back into the fluid source.

Abstract: Novel and advantageous insulator discs with embedded resonator coils are provided. By linking the insulator discs in a series using an appropriate mechanical mechanism, the insulator discs form an insulator or insulator string for a high power transmission line system. The resonator coils embedded inside the insulator discs therefore form a series of relay resonators that can be used for wireless power transfer through the principle of near-field magnetic coupling and resonance. The insulator string can provide the simultaneous functions of voltage insulation and wireless power transfer over the length of the string. Applications include, but not limited to, wireless power transfer in a high-voltage environment such as that encountered in high-voltage power transmission line systems.

Abstract: A loose lining structure based on a tantalum plate and a steel clad plate is disclosed, which includes a plate cladding base formed by the steel clad plate and the tantalum plate covered on the steel clad plate. The steel clad plate is formed by a steel layer and a cladding layer laid on the steel layer, a periphery of the tantalum plate is fixed with the cladding layer through welding, a medium circulation pipe and/or a reinforcement fastening are/is set on the plate cladding base, the medium circulation pipe includes a tantalum liner tube, the reinforcement fastening is a tantalum plug. Also, a manufacturing method of the loose lining structure based on the tantalum plate and the steel clad plate is disclosed, which includes steps of (S1) fixing through welding; (S2) processing installing holes; and (S3) installing components.

Abstract: A fast fluidized bed reactor, device and method for preparing para-xylene and co-producing light olefins from methanol and/or dimethyl ether and benzene, resolving or improving the competition problem between an MTO reaction and an alkylation reaction during the process of producing para-xylene and co-producing light olefins from methanol and/or dimethyl ether and benzene, and achieving a synergistic effect between the MTO reaction and the alkylation reaction. By controlling the mass transfer and reaction, competition between the MTO reaction and the alkylation reaction is coordinated and optimized to facilitate a synergistic effect of the two reactions, so that the conversion rate of benzene, the yield of para-xylene, and the selectivity of light olefins are increased.

Abstract: A method for preparing an SCR catalyst may include: (1) placing a first aqueous solution containing a titanium oxide and a tungstate in an electric field environment, adjusting the pH value of the first aqueous solution, and adjusting the current direction of the electric field environment to obtain a first mixture; (2) providing a second mixture by, in the electric field environment, adding dropwise a second aqueous solution containing a soluble salt of one or more active components, a copper-organic polyamine complex and a dispersant to the first mixture, and adjusting the current direction; and (3) processing the second mixture to obtain the SCR catalyst. The one or more active components may be selected from Ce, Zr, Cu, Fe, Pr and Sc.

Abstract: An information processing apparatus includes: an information management unit that registers boarding information on a user regarding boarding acquired by a check-in procedure of the user; and a deadline setting unit that, based on the boarding information, sets a deadline for a procedure of the user up to the boarding.

Abstract: An information processing apparatus includes: an information management unit that registers boarding information on users regarding boarding and biometrics information on the users acquired by a check-in procedure of the users in association with each other; and a comparison unit that compares target biometrics information, which is biometrics information acquired in a procedure up to the boarding for one of the users, with registered biometrics information, which is the biometrics information registered by the information management unit, and the comparison unit selects the registered biometrics information to be compared with the target biometrics information based on status regarding the procedure up to the boarding of the user corresponding to the registered biometrics information.