48results about How to "Pass effectively" patented technology

The invention belongs to the technical field of fruit processing, and particularly discloses a fruit cleaning device. The fruit cleaning device comprises a machine frame and a cleaning mechanism, wherein the cleaning mechanism comprises an outer cylinder and an inner roller; a plurality of vertical rods and a plurality of horizontal rods are arranged on the side wall of the inner roller; magnets are respectively arranged on the outer cylinder and the vertical rods; a plurality of brushes are respectively arranged on each of the vertical rods; a rotating shaft is connected to a driving mechanism; a transmission shaft is connected to the bottom of the rotating shaft through a universal joint; a push rod is in threaded connection to the rotating shaft; a guide rail is connected to the push rod; a telescopic rod is arranged at the bottom of the guide rail; press blocks are symmetrically arranged at two ends of the push rod; an annular door is arranged at the bottom of the outer cylinder; ablind hole is formed in the bottom of the outer cylinder; a tapped block is connected to the blind hole through a spring; a groove is formed in the annular door; a lug is arranged at the bottom of the transmission shaft; a discharging mechanism is arranged just below the cleaning mechanism; a feeding opening is formed in the top of a discharging cavity of the discharging mechanism; a mesh screenis arranged at the middle part of the discharging cavity; and a water collecting tank is connected to the bottom of the discharging cavity. Through adoption of the technical scheme of the fruit cleaning device disclosed by the invention, the problems of being poor in fruit cleaning effect, low in efficiency and not suitable for batch production are solved.

The invention discloses an electrospinning apparatus comprising an AC high-voltage generator, a liquid supplying device including a micro-injection pump, an air supplying device, a spraying head including a liquid supplying channel connected with the liquid supplying device and an annular air supplying channel connected with the air supplying device, and a receiver including at least two rod-like supporting arms, a rotating shaft and a transmission device driving the rotating shaft to rotate. The air supplying channel sleeves the liquid supplying channel; an end part of an outlet section of the liquid supplying channel is provided with a tapered tipped end; the spraying head is connected with the AC high-voltage generator; one end of the supporting arm is fixedly connected with the rotating shaft and the other end is suspended in the air; the adjacent supporting arms are arranged at intervals; all the supporting arms form a bowl type revolving surface during the rotation of the rotating shaft; and the bowl typerevolving surface is opposite to a liquid outlet and an air outlet of the spraying head. Fibers with tiny diameters can be formed by the use of the electrospinning apparatus; the fiber filament diameters are evenly distributed and the fibers have fluffy structure and excellent mechanical properties; backswinging air flows can be avoided; and the electrospinning apparatus can be widely applied to organization engineering field.

The invention discloses rumen bypass protection melatonin and a preparation method thereof, which belong to the technical field of nutrient substances of ruminants. The product is prepared by adoptingone of the following three methods: a method I comprises the steps of taking melatonin, preparing the melatonin into pellets, and drying the pellets to obtain dried melatonin pellets; carrying out fluidization again to obtain fluidized pellets; taking saturated fatty acid and salt thereof and/or an enteric slow-release packing material, melting, cooling, and coating the surface of the fluidized pellet with the molten material to obtain the rumen bypass protection melatonin; a second method comprises the following steps: taking saturated fatty acid and salt thereof and/or an enteric slow-release packing material, melting, and spraying onto the surface of melatonin to obtain rumen bypass protection melatonin; and a method 3 comprises the following steps: taking saturated fatty acid and saltthereof and/or an enteric slow-release packing material, melting, mixing with melatonin, and extruding to obtain the rumen bypass protection melatonin. The preparation method disclosed by the invention has the advantages that firstly, the melatonin can be completely coated; and secondly, the utilization degree of the ruminant to the coating layer is increased.

The invention discloses a signal acquisition system for a surface acoustic wave magnetic sensor. The signal acquisition system comprises a first oscillating circuit, a second oscillating circuit, a mixer circuit, an amplifying and shaping circuit and a single-chip microcomputer frequency measuring circuit, the first input end of the mixer circuit is connected with the first oscillating circuit, and the second input end of the mixer circuit 3 is connected with the second oscillating circuit; the amplifying and shaping circuit is connected with the signal output end IF of the frequency mixing circuit; the frequency measuring circuit is mainly connected with the signal output end of the amplifying and shaping circuit; the first oscillating circuit and the second oscillating circuit are used for outputting SAW sensor measuring frequency signals. According to the invention, a Pierce type oscillating circuit is adopted, and a SAW sensor is easy to perform self-excited oscillating to output asinusoidal signal with a specific frequency. Furthermore, the magnetic field intensity can be measured through a single difference value, namely the change of the signal frequency of a measuring branch. The precision is high, the detection range is wide, and no test blind area exists.

The invention relates to a high-entrapment efficiency long-acting nerve growth factor (NGF) liposome, belonging to the technical field of protein polypeptide drugs. The invention further discloses a preparation method of the high-entrapment efficiency long-acting nerve growth factor liposome, characterized by bonding NGF and an active membrane material of the liposome and then using a routine method and using the bonded material and other liposome components to prepare a long-circulating liposome. According to the invention, by bonding -SH, -NH2 in NGF molecules with the special active membrane material, that is, active lipid of the liposome, the entrapment efficiency is greatly increased, the internal stability is raised under the protection of long-chain PEG in the active lipid, and the key problem of the NGF application is solved.

The invention discloses a preparation method of rumen bypass protection tryptophan particles, and belongs to the technical field of nutrient substances of ruminants. The preparation method of the rumen bypass protection tryptophan particles comprises the following steps: S1, taking tryptophan, preparing the tryptophan into pellets, and drying the pellets to obtain dried tryptophan pellets; S2, fluidizing the dried tryptophan pellets; and S3, taking saturated fatty acid and salt thereof and/or an enteric slow-release packing material, carrying out melting and cooling, and coating the surfaces of the fluidized pellets with the molten material to obtain the rumen bypass protection tryptophan particles. By adopting the preparation method disclosed by the invention, firstly, tryptophan can be completely coated, so that the finally prepared rumen bypass protection tryptophan particles can more effectively pass through rumens of ruminants; and secondly, the utilization degree of the coating layer by ruminants is increased, so that the coated tryptophan can be completely released and fully utilized by ruminants.

The invention discloses a chemical corrosive used for manufacturing a micropore aluminum foil, belonging to the technical field of manufacturing of lithium battery anode materials. The invention aimsto solve the technical problem of providing the chemical corrosive for manufacturing the high-performance micropore aluminum foil. The scheme adopted by the invention is characterized in that the corrosive comprises the following solution of molar concentrations: 0.1-3 mol/L of Cl<-> and 0.1-3 mol/L of Fe<3+> and Cu<2+>; the corrosive further comprises the following solution of molar concentrations: 0.01-0.1 mol/L of H<+>; and the corrosive further comprises the following solution of molar concentrations: 0.01-0.1 mol/L of OH<->. The chemical corrosive can be widely applied to the technical field of micropore aluminum foil manufacturing.

For an existing spontaneous-heating patch, an adhesion layer adopts an air-tight totally-enclosed colloid base layer, it is difficult for the skin to adapt to the adhesion layer, and absorption of medicinal ingredients is completely isolated. An efficient spontaneous-heating medicinal patch comprises an air-permeable protection bottom membrane, an air-permeable protection surface membrane, a base material isolation membrane, a heating base material, medicinal materials and an oxygen isolation bag; the base material isolation membrane is arranged between the medicinal materials and the heating base material, volatilization of the medicinal ingredients can be prevented, and the medicinal ingredients of the medicinal materials can directly reach the nidi only through the skin; colloid base materials are distributed on the side, close to the medicinal materials, of the air-permeable protection bottom membrane in a point-shaped mode, the medicinal ingredients can pass through effectively, adhesive looseness caused by local heating and sweating of the skin can be prevented, and skin allergies can be effectively prevented.

The invention belongs to the field of material preparation, and particularly relates to a preparation method of a large-area molybdenum disulfide film. According to the method, a confinement space method is adopted, a magnetron sputtering method and a chemical vapor deposition method are combined, and reaction parameters are optimized to obtain a large-area MoS2 film material. The film obtained on the basis of a two-step method has the characteristics of large area, good uniformity, strong controllability, good crystallinity and the like, and the method is simple to operate, short in time consumption and capable of being produced and applied on a large scale.

The invention relates to a light-emitting electron microscopic imaging method capable of working under approximate atmospheric pressure conditions. The method is capable of effectively loading a highelectric field while maintaining high atmospheric pressure. The method is applied to a light-emitting electron microscope (PEEM) system to realize PEEM imaging under approximate atmospheric pressure conditions. PEEM imaging under approximate atmospheric pressure conditions is achieved through fractional electron-accelerated electronic optical path system and a gas pressure differential pumping system. Spatial resolution of 100 nm is achieved. A hollow conical tube added between a sample and an objective lens is both the application position of the primary voltage and the first-order differential pumping of the gas pressure. A designed atmosphere chamber has the functions of light source introduction, gas introduction/evacuation and chamber sealing, so that an approximate atmospheric pressure environment is between the top of the conical tube and a sample. In-situ and dynamic surface imaging studies of a surface nanostructure under approximate real working conditions are achieved by coupling the atmosphere chamber and a conventional PEEM imaging component.

The invention discloses a processing method for a counterbore type PCB, which relates to the technical field of electronic processing. The method comprises the following steps of: thickening copper, and thickening copper on the PCB to increase the thickness of copper foil on the PCB, drilling for the first time, drilling the PCB subjected to the copper thickening treatment by adopting a circular drill bit and processing a via hole and a positioning hole, conducting secondary drilling, adopting a conical drill bit for secondary machining, and processing a counterbore, etching, etching the frontsurface and the back surface of the drilled PCB in sequence by adopting a fractional etching method, and resistance welding: carrying out twice resistance welding screen printing on the etched PCB byadopting a Line Mask film alignment exposure method. Firstly, copper thickening treatment is carried out on a PCB, and then counterbores are formed through two times of drilling. Due to the design ofthe counterbores of the PCB, the overall assembly size of the electronic product is small, and the assembly is smoother during installation.

The invention discloses an HJT battery with high photoelectric conversion efficiency and a preparation method thereof, and belongs to the technical field of solar cells. The HJT battery comprises an N-type crystal silicon wafer, wherein an intrinsic amorphous silicon layer, a SiO2 layer, a C-doped SiO2 layer, an amorphous silicon doped N-type layer, a TCO conductive layer and an electrode are sequentially arranged on the front surface of the N-type crystal silicon wafer; an intrinsic amorphous silicon layer, a SiO2 layer, a C-doped SiO2 layer, an amorphous silicon doped P-type layer, a TCO conductive layer and an electrode are sequentially arranged on the back surface of the N-type crystal silicon wafer; and the amorphous silicon doped P-type layer comprises a lightly doped B amorphous silicon layer and a heavily doped B amorphous silicon layer. According to the prepared heterojunction solar cell, the photoelectric conversion efficiency can be improved to 24.3% or above, the short-circuit current and the open-circuit voltage are obviously improved, and the photoelectric conversion efficiency of the silicon heterojunction solar cell can be effectively improved.

The invention discloses a graphene even harmonic frequency multiplier based on direct current bias and a design method. The graphene even harmonic frequency multiplier comprises a cavity, a signal input end, a signal output end and a graphene frequency multiplier substrate, wherein the graphene frequency multiplier substrate comprises a high-frequency medium substrate and graphene arranged on thehigh-frequency medium substrate, wherein the front end and the rear end of the graphene are respectively connected with a signal input end and a signal output end through microstrip lines, a first direct current bias circuit and a second direct current bias circuit are respectively arranged on the microstrip lines close to the signal input end and the signal output end, and a graphene frequency doubling frequency spectrum can be changed after the bias circuit is added. By adding the direct current bias, odd harmonic components can be suppressed, even harmonic components can be amplified, and thus the frequency doubling effect can be improved. The defect that in the prior art, fundamental waves and odd harmonic components generated by graphene under excitation of an electromagnetic field have a natural inhibition function on even harmonics is overcome, even frequency multiplication can be achieved, and wide application space is achieved in the field of terahertz devices and radio frequency chip design.

The invention belongs to the technical field of gyroscope signal processing and particularly discloses a differential band-pass frequency modulation MEMS gyroscope rate analysis device and method. Thedevice comprises an analog circuit part and a digital circuit part. And the analog circuit part is used for realizing analog signal acquisition of an MEMS gyroscope. And the digital circuit part comprises a digital signal frequency measurement circuit, a digital signal demodulation circuit and a digital signal filter circuit. The digital circuit part is mainly used for completing frequency measurement, demodulation, filtering and other processing of MEMS gyroscope signals. According to the invention, the rate analysis of the MEMS gyroscope is completed in the digital circuit such that a largenumber of crystal oscillator signals can be effectively prevented from being introduced into an analog circuit area, and the device is ensured to have good electromagnetic compatibility. And meanwhile, due to the characteristic that the digital circuit is not easily influenced by the environment, the gyroscope angular rate can still be accurately analyzed in an extreme environment. In addition, the signal-to-noise ratio of the device is improved.

The invention relates to the field of medicines, and particularly relates to an oral mucosa drug delivery system. The oral mucosa drug delivery system comprises a matrix and inclusion particles dispersed in the matrix, wherein the inclusion particles comprise a drug A and an inclusion material wrapping the drug A; the inclusion particles contain lipid, and the lipid accounts for 60-100wt% of the weight of the inclusion material; and the matrix optionally further contains a drug B, and the drug B is the same as or different from the drug A. The drug release of the oral mucosa drug delivery system can be more stable, side effects caused by concentration fluctuation are avoided, and the drug can be continuously released for a longer time.

The invention relates to compounds with a neuroprotective effect, and a preparation method and application thereof. Specifically, the compounds disclosed by the invention have a structure as shown in a formula I, and the definitions of all groups and substituent groups are described in the specification. The invention also discloses the preparation method of the compounds and application of the compounds in neuroprotection.

The invention provides a preparation method of a blocking support frame. The method comprises the following steps of (A) inoculating a solid substrate with a microbial strain; after fermentation, obtaining a solid substrate with a bacterial cellulose membrane on the surface, wherein the microbial strain is a strain capable of generating bacterial cellulose; (B) putting the solid substrate obtainedin the step (A) into aerosol containing nutrition solution; performing fermentation; (C) putting a metal support frame onto the surface of the solid substrate obtained in the step (B) to obtain a combined support frame; (D) putting the combined support frame into the aerosol containing nutrition solution; performing fermentation to obtain a blocking support frame. The preparation method of the blocking support frame provided by the invention can be used for preparing and obtaining the clinic support frame material with a good blocking function; growth factors can pass through the material while cells and bacteria can be blocked; good biocompatibility is realized; the blocking support frame belongs to an ideal clinic blocking support frame.

The invention discloses a simple water quality analysis detector based on the Roche water measurement principle. The detector comprises a ship body, wherein a water pumping device comprises an inner sliding groove arranged in a barrel, long sliding grooves are symmetrically arranged on the left side surface and the right side surface of the barrel, stop blocks are symmetrically and fixedly arranged on the left side surface and the right side surface of the inner sliding groove, a glass bottle is connected in the inner sliding groove in a sliding manner, and a short electric wire is arranged inthe glass bottle. The detector is firstly placed in a water area to be measured, and then a driving motor is started, so that a power shaft, a second belt wheel, a universal joint, a spiral shaft anda propeller are driven to rotate, and the ship body is driven to move forward to a point to be detected. The simple water quality analysis detector can detect the content and approximate variety of algae in water by the Roche water measuring method, so as to obtain the water quality condition in the water area to be detected, and can detect the water quality conditions of different points to be detected in the water area through a driving device at the same time; and meanwhile, the detector is provided with a solar charging sunlamp, and can detect under the condition that the weather is not good.