Abstract: The invention discloses a filtering antenna for wearable devices, which includes a top dielectric substrate, a bottom dielectric substrate, an antenna radiation unit, a top metal ground, a bottom metal ground, and an artificial magnetic conductor structure. The antenna radiation unit is printed on an upper surface of the top dielectric substrate, the top metal ground is printed on a lower surface of the top dielectric substrate, the artificial magnetic conductor structure is etched on an upper surface of the bottom dielectric substrate, and the bottom metal ground is printed on a lower surface of the bottom dielectric substrate. The antenna radiation unit is formed by a circular patch and a microstrip coupling feed stub structure. The invention has the advantages of miniaturization, easy integration, low profile, high gain, anti-interference, may work in the 5.8-GHz ISM frequency band, may be used in wearable devices, has filtering effect etc.

Abstract: The present invention relates to an ironmaking feedstock comprising a solid CaFe3O5 phase. The ironmaking feedstock may be produced by a process comprising reacting a combination of a calcium source and magnetite at elevated temperature under reducing conditions sufficient to produce the solid CaFe3O5 phase. The product may be in the form of agglomerates such as pellets, with a compressive strength such that the product is suitable for transportation.

Abstract: A method for constructing a porous micro-nano structure, includes: thoroughly mixing glass powders and metal powders to obtain a mixture; coating the mixture on a surface of a substrate, and forming a coating on the surface, wherein a temperature of forming the coating and a melting point of the glass powders comply with the following formula: Tforming?Tglass?50° C.; and constructing a surface structure of the coating to obtain a porous micro-nano structure coating on the surface, such that a material with a porous micro-nano structure is obtained. The method is simple and has a low cost. The porous micro-nano structure coating prepared has excellent mechanical stability.

Abstract: A high-speed machining tool made of a steel-bonded carbide and a method for preparing the same relate to the technical field of lathe tools made of steel-bonded carbides, and overcome the problems of traditional steel-bonded carbide lathe tools about low hardness and low toughness. The high-speed machining tool includes a skeleton, a main body, and a coating. The main body is consolidated by the skeleton from inside. The skeleton and the main body are both ringlike in shape. The main body has its outer surface covered by the coating. The high-speed machining tool is such made that the skeleton is hard and the main body is tough. The blade of the tool is hard and can transfer vibrations to the main body, thereby protecting the tool from brittle fractures and improving the overall performance of the tool.

Abstract: A gas measuring device includes a gas chamber into which a sample gas containing a target gas is introduced, a gas detection unit configured to detect the target gas contained in the sample gas introduced into the gas chamber, an irradiation unit configured to apply polarized light to the sample gas introduced into the gas chamber using a polarizer, an optical rotation measurement unit configured to measure optical rotation between the polarized light applied from the irradiation unit to the sample gas and the polarized light that has been transmitted through the sample gas using an analyzer, and an output unit configured to output information on the target gas detected by the gas detection unit and information on the optical rotation of the polarized light detected by the optical rotation measurement unit in association with each other.

Abstract: Disclosed is a multi-shaft pressurized rock mechanics tester, pertaining to the technical field of rock mechanics testing devices, comprising a base; the base is of an integral rectangular structure, and welded six vertical support plates symmetrically at the front and back ends, a -shaped bracket plate is horizontally welded at the top of the six vertical support plates (“” is a Chinese character, read as “Ri”), and a bracket plate is rotatably installed on the top section of the three rear vertical support plates, pressed against the -shaped bracket plate; the left and right sides of the base are symmetrically welded with four vertical bracing plates, an I-shaped installation plate is welded on the top of the four vertical bracing plates, four hydraulic cylinders are locked, fixed and hoisted on the bottom of the I-shaped installation plate with screws.

Abstract: The present disclosure provides a Paenibacillus mucilaginosus LT1906 and use thereof, and a microorganism-activated circulating fluidized bed (CFB) fly ash-based cementitious material and a preparation method and use thereof, belonging to the technical field of cementitious materials. The Paenibacillus mucilaginosus LT1906 has a deposit number of CGMCC No. 21337. The strain is capable of dissolving silicate minerals and aluminosilicate minerals in the CFB fly ash to increase dissolution of active SiO2. The strain is used for activating the CFB fly ash-based cementitious material, to ameliorate a large water demand and a low early strength of the cementitious material, thereby improving comprehensive utilization of the CFB fly ash in the field of building materials.

Abstract: A method for constructing a porous micro-nano structure, includes: thoroughly mixing glass powders and metal powders to obtain a mixture; coating the mixture on a surface of a substrate, and forming a coating on the surface, wherein a temperature of forming the coating and a melting point of the glass powders comply with the following formula: Tforming?Tglass?50° C.; and constructing a surface structure of the coating to obtain a porous micro-nano structure coating on the surface, such that a material with a porous micro-nano structure is obtained. The method is simple and has a low cost. The porous micro-nano structure coating prepared has excellent mechanical stability.

Abstract: Disclosed herein is a UV mutagenesis produced new Streptomyces spororaveus strain SC263 that exhibits an increased thermostability of the antibiotic produced, which shows antibiotic activity against bacteria and fungi. Also provided are the antibiotic produced by SC263 and a composition thereof for treatment of bacterial and fungal infections. The antibiotic has a very high molecular weight, which is suitable for topical administration.

Abstract: The present invention discloses a method for preparing bendable nanopaper-based flexible solar cells by 3D aerogel jet printing. In this method, firstly all-cellulose paper is soaked in ionic liquid, and quickly partially dissolved and regenerated under the condition of hot pressing to produce nanopaper with high transmittance and high haze; and then a 3D aerogel jet printer is used to precisely print the respective layers of a solar cell on the surface of the nanopaper as a flexible substrate material, wherein the solar cell comprises an anode PFN/Ag NWs, an active layer CuPc/C60/PTCBI/BCP and a cathode MoO3/Ag/MoO3, and the thickness of each layer is precisely controlled by setting the parameters of the 3D printer. The electrode grid line on the surface of the prepared paper flexible solar cell has a width less than 10 ?m and a thickness less than 20 nm.

Abstract: A method for integrally forming a graphene film (GF) of a high specific surface area (SSA) by ultrafast ultraviolet (UV) laser processing, includes: selecting a carbon precursor material, where the carbon precursor material is one selected from the group consisting of a biomass/hydrogel composite and a heavy hydrocarbon compound; adding an activator solution to an inside of the carbon precursor material to obtain a composite with an activator uniformly loaded, and spreading the composite on a flexible substrate to form a carbon precursor material layer; heating and drying the carbon precursor material layer; in-situ processing with an ultrafast UV laser to obtain an activated GF of a high SSA; and cleaning and drying the activated GF. With the method of the present disclosure, a microporous activated GF of a high SSA can be directly processed in-situ on a flexible substrate.

Abstract: A system and a method for controlling a reel of a combine harvester, wherein, the system comprises a satellite positioning receiver, a driving device, a controller and a rotating speed sensor; the rotating speed sensor collects and transmits an actual rotating speed of the reel to the controller, and the controller provides the driving device with a speed regulation signal according to the actual rotating speed and the operation running speed. The rotating speed of the reel can be automatically, accurately and quickly adjusted according to the operation running speed of the combine harvester during the operation of the combine harvester, and improve the operation efficiency and quality while ensuring the crop feed quantity.

Abstract: Disclosed herein is a method that combines two different hologram origination processes in a single photoresist layer by using an interlayer to transfer structures exposed by electron beam lithography into overlapped with dot-matrix hologram areas, and fabricated holographic structures are replicated in multilayer polymer films. Dot-matrix technique is low cost process, which has high origination speed and can be used for the patterning of large areas of holograms with high diffraction efficiency. Electron beam lithography allows the formation of high resolution structures. The method allows combining these two technologies so that the final security device could contain electron beam patterned high resolution diffraction gratings, computer generated holograms, as well as dot-matrix laser patterned large hologram areas with high diffraction efficiency, providing an increased level of protection.

Abstract: Disclosed is a negative electrode current collector for an anode-free lithium metal battery. The negative electrode current collector includes a PdTe2 layer and an intermediate layer to inhibit the growth of lithium dendrite, resulting in significant improves in lifespan and performance of the lithium metal battery. The negative electrode current collector further includes an ion conductive layer to improve the performance of the lithium metal battery.

Abstract: The present disclosure discloses a method of identifying delamination damage of an arc-shaped composite laminate, and belongs to the technical field of delamination damage identification. According to the method, an elliptical loci method and a fitted normal PDF for damage imaging are probabilistically integrated under a Bayesian framework. A plurality of characteristics sensitive to damage can be reasonably fused, known prior information is combined with measured time of flight (ToF) data, and the posterior distribution of unknown parameters is sampled by using a Markov Chain Monte Carlo (MCMC) algorithm, so that the reliability of damage location is improved, and the applicability of Lamb waves in damage location of plate structures is enhanced. In addition, the present disclosure can accurately identify the delamination damage of the arc-shaped composite laminate by processing the measured time of flight (ToF), and the absolute positioning error is less than 1 cm.

Abstract: An asynchronous rolling mill with a super large diameter ratio comprises a rolling mill stand, a press-down device, a balancing device, an upper roll system, and an arc-shaped plate device. The arc-shaped plate device comprises an arc-shaped plate, the arc-shaped plate is arranged opposite to the upper roll, and the arc-shaped plate and the upper roll are cooperated to roll strips. The present disclosure also provides a method for rolling a strip using an asynchronous rolling mill with a super large diameter ratio. The asynchronous rolling mill can roll with super large diameter ratio and different speeds, and has a large angle to engage, thereby reducing the external friction force of a workpiece and improving strip forming quality.

Abstract: Disclosed herein is a method for estimating a depth of an image. The method may include acquiring a first depth image based on left and right images collected from a stereo camera, estimating a second depth image based on any one of the left and right images, generating a depth estimation model based on first depth values within a depth range recognizable by the stereo camera in the first depth image and on second depth values of the second depth image matching the first depth values, and inputting third depth values of a range intended to be estimated in the second depth image to the depth estimation model, thereby estimating fourth depth values of the first depth image matching the third depth values.

Abstract: A power conversion device comprises: power conversion circuitry for converting DC power into AC power and supplying it into a load according to a switching state quantity defined by combinations among switching parameters of switching devices; a voltage output calculation device for calculating a voltage output value on the power conversion circuitry, based on the switching state quantity; an integration value calculation device for acquiring a voltage reference integration value and a voltage output integration value by integrating a voltage reference value and the calculated voltage output value; a switching update-determination unit for outputting an update signal of the switching state quantity, based on the voltage reference integration value, its allowance value, and the voltage output integration value; and a switching determination table for determining a switching state quantity of the switching devices, based on the voltage reference integration value, the voltage output integration value and the up

Abstract: The present invention provides a multifunctional rock mechanics tester, pertaining to the technical field of mechanics tester, consisting of a base; wherein a power mechanism is mounted on the top of the base, two tension testing mechanisms are arranged on the power mechanism in an up-and-down symmetrical way, a clamping mechanism is mounted on each tension testing mechanism, a rock testing block is clamped between the two clamping mechanisms. The present invention realizes the tension and pressure testing of the rock test block through the arrangement of tension testing mechanism and pressure testing mechanism, thus improving the functionality of the present mechanics tester, which not only reduces the testing cost, but also effectively decreases the occupied space; the present invention solves the problem that the traditional mechanics tester can only complete one kind of test when it is used.

Abstract: A method suitable for driver takeover training of man-machine shared driving vehicle relates to the field of man-machine shared driving technology. The method includes: establishing database, situation-creation, establish a teaching model, take over training, evaluation and analysis of takeover ability. The method divides the driver's takeover behavior into a small operation action through the driver takeover training of the man-machine shared driving vehicle, defines where the driver's eyes need to observe when the takeover reminder appears, how the hands and feet need to be operated, and the sequence of these operations, solves the problems of the driver's tension and being in a flurry in the current sudden takeover reminder. In addition, through the evaluation and analysis of the takeover capability, the method can solve the problem that the existing technology cannot objectively evaluate the driver's takeover capability level.