Abstract: A servo and a robot with the same are provided. The servo comprises a servo body, an upper cover, a lower cover, and a gear set having a plurality of gears meshing with each other. The gear set is located in the servo body, and comprises an output gear located in the center of the servo body as seen from the cross section of the servo body.

Abstract: The invention provides a recombinant Escherichia coli strain for producing succinic acid and a construction method thereof. The by-product encoding genes in the E. coli strain FMME-N-2 are knocked out to obtain the E. coli strain FMME-N-5 (?focA-pflB-?ldhA-?pta-ackA); and the phosphoenolpyruvate carboxykinase pck derived from Actinobacillus succinogenes and the phosphite dehydrogenase ptxD derived from Pseudomonas stutzeri were overexpressed. The constructed plasmid pTrcHisA-pck-ptxD was introduced into the expression host E. coli FMME-N-5 (?focA-pflB-?ldhA-?pta-ackA), and the cells were screened in a plate containing ampicillin, to obtain an engineered strain E. coli FMME-N-5 (?focA-pflB-?ldhA-?pta-ackA)-pck-ptxD that can efficiently produce succinic acid. After fermentation by a two-stage fermentation strategy, the production of succinic acid reaches 137 g/L, the yield of succinic acid is up to 1 g/g glucose, and the space time yield is 1.

Abstract: A countertop installation assembly comprises an installation seat, a driving member, and a fastening assembly. The installation seat is positioned in the installation hole and is configured to extend to below the countertop. The installation seat comprises a receiving cavity extending along a longitudinal direction. The driving member is rotatably disposed in the installation seat. The fastening assembly is operatively coupled to the driving member, and the fastening assembly is located below the countertop and moves up and down in the receiving cavity. The driving member is rotated from above the countertop to drive the fastening assembly to move up and down in the receiving cavity so as to enable the fastening assembly to be clamped to or separated from a lower side of the countertop. The fastening assembly is driven by the driving member to move between a retracted position and an extended position.

Abstract: A conductive terminal includes a conductive base substrate and a plating layer structure plated on the conductive base substrate. The plating layer structure includes a nickel plating layer located outside the conductive base substrate, a silver plating layer located outside the nickel plating layer, and a platinum-based polymetallic plating layer located outside the silver plating layer.

Abstract: Embodiments of the present disclosure relates to the field of furniture. Provided is a sofa seat stretching device. In the sofa seat stretching device, one end of a second support facing away from a first support, and a second leg rest plate connector are hinged at a fourth hinge point, so that the stretching assembly's stretching speed is reduced in a process of switching from a sitting position state to a lying position state when a driving assembly acts in the same way, and the weightlessness feeling can be effectively avoided. Moreover, the driving assembly drives the stretching assembly so that the process of switching the stretching assembly from the lying position state to the sitting position state is smoother.

Abstract: A substrate with differing dielectric constant materials is provided. The substrate includes a first ground plane, a second ground plane, a first conductive trace, a first material having a first dielectric constant, and a second material having a second dielectric constant. The first material is disposed between the first ground plane and the first conductive trace, and the second material is disposed between the second ground plane and at least part of the first conductive trace. The first dielectric constant is different from the second dielectric constant.

Abstract: Disclosed herein are an imaging module bearing device and base, a microscopic image acquisition device and an adjusting method. The imaging module bearing device includes an imaging lens support, an imaging lens clamping base and an adjustment guide base; an imaging lens clamping base bottom portion is movably clamped between the imaging lens support and the adjustment guide base; and the levelness of an upper surface of the imaging lens clamping base bottom portion relative to an imaging lens support bottom portion can be adjusted until a microscopic imaging module fixed to the imaging lens clamping base is orthogonal to the upper surface of the imaging lens clamping base bottom portion, and the microscopic imaging module is fixed to the imaging lens clamping base.

Abstract: A method is provided that includes: obtaining a first state information of the remote driving system, where the remote driving system is configured to perform remote control on a vehicle communicatively connected with the remote driving system; determining whether an abnormality occurs in the remote driving system based on the first state information; determining abnormality information of the remote driving system in response to the occurrence of the abnormality in the remote driving system; and adjusting a state of the remote control based on the abnormality information.

Abstract: A seat frame includes a base, a driving member and a stretching member. The driving member and the stretching member are disposed on the base. The stretching member includes backrest assemblies, cushion support assemblies and leg rest plate assemblies which are positioned on left and right sides of the base and set in pairs. A front end and a rear end of the cushion support assembly are hinged with one end of the backrest assembly and one end of the leg rest plate assembly respectively. When the seat frame is in a television (TV) posture and a lying posture, and the leg rest plate frame is inclined upward with respect to a horizontal plane.

Abstract: Provided is a process including: determining, based on a machine learning model, a measure of outcome success for a set of job requisitions, the machine learning model trained to determine measures of outcome success for job requisitions based on a set of job requisition training data, and the set of job requisition training data comprising: a set of historical job requisitions; and job outcomes for the set of historical job requisitions; ranking, based on the measure of outcome success, the set of job requisitions to generate a ranked set of job requisitions; and providing, to a job candidate, one or more job requisitions of the ranked set of job requisitions for selection of a job requisition for application by the job candidate.

Abstract: Methods are provided for modulating MRGPRX2 or a MRGPRX2 ortholog generally, or for treating a MRGPRX2 or a MRGPRX2 ortholog dependent condition more specifically, by contacting the MRGPRX2 or the MRGPRX2 ortholog by administering to a subject in need thereof, respectively, an effective amount of a compound having structure (I): or a pharmaceutically acceptable salt, isomer, hydrate, solvate or isotope thereof, wherein W, Z, R1, R2, R3, R4, R5, R6 and Rx are as defined herein. Pharmaceutical compositions containing such compounds, as well as the compounds themselves, are also provided.

Abstract: High-protein food additives are prepared by reacting a protein material with L-cysteine, or a derivative thereof, with homogenization and heating. The homogenization and heating is preferably carried out on an aqueously slurry of the protein material and L-cysteine. The homogenized and reacted slurry is then dried to form a powder. The resultant food additive may be incorporated into a wide variety of food products to enhance the physical characteristics thereof.

Abstract: An induced earthquake evaluation method for hydraulic fracturing activated faults includes obtaining an induced earthquake evaluation unit, cumulative injection equivalent energy, induced earthquake probability of fault type, induced earthquake probability of fault distance, hydraulic fracturing fluid diffusion capacity in fractured formation, new effective fault stress after fracturing, formation fluid pressure change rate and cumulative released equivalent energy. The probability of induced earthquake by hydraulic fracturing can be obtained. The induced earthquake possibility of each evaluation unit or single well under different stages of hydraulic fracturing, different construction injection methods and production conditions can be quantitatively evaluated. The method provides a quantitative result that can provide data support for optimizing hydraulic fracturing and reducing induced earthquake hazards.

Abstract: A light emitting device includes an epitaxial structure and first and second electrodes on a side of the epitaxial structure. The epitaxial structure includes a first-type semiconductor layer, an active layer, and a second-type semiconductor layer. The active layer is disposed between the first-type semiconductor layer and the second-type semiconductor layer. The first electrode is disposed on the epitaxial structure to be electrically connected with the first-type semiconductor layer. The second electrode is disposed on the epitaxial structure to be electrically connected with the second-type semiconductor layer. The second electrode is in ohmic contact with a second-type window sublayer of the second-type semiconductor layer.

Abstract: Disclosed are a special tooling and method for electron beam welding of a cavity body and a beam tube of a superconducting niobium cavity. The special tooling includes a first clamping device for fixing a flange and a second clamping device for fixing a semi-cavity body, wherein the first clamping device and the second clamping device are fixedly connected. A pressing ring of the first clamping device is disposed around a beam tube of a superconducting niobium cavity and cooperates with a base plate to clamp and fix the flange. The second clamping device includes clamping arms evenly distributed along a circumference of the semi-cavity body, and each clamping arm includes a second pressing plate axially disposed along the beam tube and a pressing block that is disposed on an end portion of the second pressing plate and fixes an edge of the semi-cavity body.

Abstract: The disclosure presents a quick mountable assembly for handle, a handle assembly, and a method of mounting the same. The quick mountable assembly for handle includes a tube having a first peripheral section and a second peripheral section arranged in a circumferential direction. The second peripheral section includes convex threads compared to the surface of the first peripheral section. The assembly further includes a nut having a first inner wall section and a second inner wall section arranged in a circumferential direction. The second inner wall section has convex threads compared to the surface of the first inner wall section. The nut has a first engagement position in which the second inner wall section aligned to the first peripheral section of the tube and a second engagement position in which the second inner wall section screwed to the second peripheral section of the tube.

Abstract: Disclosed are a cathode active material for sodium-ion batteries and a preparation method therefor and an application thereof. The cathode active material has a chemical formula of NaxNiyFezMngMhAmO2, where M is selected from the group consisting of Ti, Al, Mg, Ca, Zr, Y, Zn, Nb, W and combinations thereof, A is selected from the group consisting of B, P, C and combinations thereof, 0.80?x?1.40, 0.05?y?0.95, 0.05?z?0.95, 0.05?g?0.95, 0.01?h?0.50, and 0.01?m?0.30. By adding M and A elements to the ternary iron-manganese-nickel cathode active material for sodium-ion batteries, and controlling the ratio of all elements, the present disclosure can achieve the formation of a perfect layered single-crystal structure of the cathode active material for sodium-ion batteries, with large particles, ultimately achieving the stability of the active material, and when used in sodium-ion batteries, it can significantly improve the cycling performance at high temperatures while ensuring high gram capacity.

Abstract: Methods of forming a coating system on a surface of a cobalt-based superalloy component are provided. The method includes forming a nickel-based primer layer on the surface of the cobalt-based superalloy component; forming an intermediate nickel-containing layer on the nickel-based primer layer; and heat treating the cobalt-based superalloy component to form a diffusion coating on the surface of the cobalt-based superalloy component. The intermediate nickel-containing layer includes nickel, chromium, and aluminum. Coated cobalt-based superalloy components formed from such a method are also provided.

Abstract: The invention provides a method for preparing pyrrolidone, and the invention provides a method for catalytically preparing pyrrolidone with ?-aminobutyric acid in the presence of carnitine-CoA ligase CaiC. The carnitine-CoA ligase CaiC has an amino acid sequence as shown in SEQ ID NO:1. The ligase has catalytic activity in the cyclization of ?-aminobutyric acid to produce pyrrolidone. The carnitine-CoA ligase provided in the present invention affords a yield of pyrrolidone of 3.26 g/L and a molar yield of 39.53% in 24 h when ?-aminobutyric acid is used as a substrate, thus reducing the production period, improving the production of pyrrolidone, and accelerating the industrialization process of producing pyrrolidone by enzymatic conversion method.