72results about How to "Improve distribution characteristics" patented technology

The present invention relates to axial flow chromatography columns and methods for separating one or more analytes in a liquid by the use of such columns. The column comprises a first port for mobile phase and a transverse fluid distribution channel for distributing fluid uniformly throughout the packed bed. The first port comprises an inlet and an outlet having a passageway there between, the outlet having an asymmetric configuration relative to the fluid distribution channel.

A uniform fluid distribution system (2) for use with a liquid transfer system (100) for maintaining an interface between liquid phases within a large scale separator system including a cell into which liquid may be introduced as discrete phases at an inlet zone occupying a first approximately transverse cross-sectional region of said cell and outputted at an outlet zone occupying a second approximately transverse cross-sectional region of said cell. Said distribution system comprises at least one liquid inlet (24) and at least two distribution outlets (32), which are connected by an internal flow connection system (36). Wherein said distribution outlets (32) are formed as concentric annular or rectilinear distribution-slots (32), each with an unique radius / distance to the midpoint r to the midpoint between an inner slot-radius / distance to the midpoint and an outer slot-radius / distance to the midpoint, said radii / distances to the midpoint defining a slot-width w, through which annular distribution-slot (32) liquid entering said inlet (24) is distributed to said cell along an approximately horizontal plane, and said internal flow connection system (36) is formed such that it provides an essentially uniform fluid flow through the distribution-slots (32).

Methods and apparatus for applying labels to products by effecting a complete or partial pre-release of the label from the carrier web are provided. Such initial de-lamination alters the label release value thereby enabling more consistent label application without unduly increasing web tension. Final label de-lamination may be aided using vacuum assist apparatus.

A fuel cell (A1) includes a cell stack (B) and a casing (210) for housing the cell stack (B), and is supplied with two reactant gases flowing separately from each other. The cell stack (B) includes a plurality of solid electrolyte fuel cell units (200) stacked on one another with inter-unit spaces provided therebetween. One of the reactant gases is supplied to the inter-unit spaces and used for power generation. The casing (210) includes a peripheral wall (222) surrounding the cell stack (B). The peripheral wall (222) is provided with at least one gas inlet opening (223) for introducing the one of the reactant gases into the inter-unit spaces and at least one gas outlet opening (224) for discharging the introduced reactant gas, wherein total opening width dimension of the gas inlet opening (223) is greater than total opening width dimension of the gas outlet opening (224).

An antifriction bearing fault diagnosis method based on an energy operator demodulated depth belief network (DBN) and a particle swarm optimized support vector machine (PSO-SVM); the method comprisesthe following steps: using an energy operator demodulation method to obtain an instantaneous Teager oscillogram and solving a time frequency characteristic statistics parameter thereof; using the DBNto extract secondary characteristics of the time frequency characteristic statistics; finally inputting the extracted characteristic parameter into the PSO-SVM for fault classification. The antifriction bearing fault diagnosis method is higher in accuracy, can greatly shorten the algorithm training time, thus improving the fault diagnosis accuracy and efficiency.

The present invention provides a chromatography medium comprising one or more electrospun polymer nanofibers which form a stationary phase comprising a plurality of pores through which a mobile phase can permeate and use of the same in chromatography, such as the isolation of recombinant proteins, monoclonal antibodies, viral vaccines and plasmid DNA. The invention further provides for the use of the chromatographic medium in a simulated moving bed system.

A mattress including a plurality of cells aligned and disposed on a body pressure working surface of a substrate that supports a human body; and a pressure control member that changes a height of each cell by adjusting a pressure in a fluid chamber formed within the cell. The cells are configured such that as the each cell is inflated by fluid supplied to the fluid chamber within the cell, the height of the each cell increases and a width dimension of the each cell in a direction of alignment decreases, and that peripheral portions of adjacent cells in the direction of alignment are overlapped with each other prior to cell inflation.

The invention discloses a pulsating heat pipe heat exchanger with lyophilic coatings. The pulsating heat pipe heat exchanger comprises an evaporating segment, a heat insulation segment and a condensation segment which are connected in sequence, and the evaporating segment, the heat insulation segment and the condensation segment are filled with heat exchange working media. The pulsating heat pipe heat exchanger is characterized in that the inner wall of the evaporating segment, the inner wall of the heat insulation segment and the inner wall of the condensation segment are coated with the lyophilic coatings corresponding to the heat exchange working media. The lyophilic coating is arranged on the inner wall of a pulsating heat pipe, the thickness and materials of the coatings correspond to the type of the working media injected into the pulsating heat pipe, and therefore the working media can be spread out on the surfaces of the materials well. Due to the lyophilic coatings, the heat exchange process of the liquid phase working media and the wall of the pipe is greatly enhanced, the heat transfer performance of the pulsating heat pipe can be effectively improved, the temperature difference of the evaporating segment and the condensation segment of the pulsating heat pipe is reduced, the work occasion of the pulsating heat pipe heat exchanger is further widened, and the pulsating heat pipe heat exchanger has very good application prospects.

The invention discloses a uniformly distributed flute-shaped current equalizer applied for uniformly distributing two-phase flow of a header branch pipe, belonging to the range of homogeneous phase distribution device of two-phase flow in a header. A concentric flute-shaped tube is arranged in the header, a lead-in tube is introduced from the radial direction of a header main body to be connected with the flute-shaped tube or from the axial direction of the header main body to be connected with the flute-shaped tube; and the pressure of all positions of fluid in the header main body is guaranteed to be basically consistent, and therefore, the flow rate of the fluid flowing into the branch pipe is basically the same, thus greatly improving the two-phase flow rate distribution characteristic in the header branch pipe, and achieving the purpose of uniform distribution of two-phase flow rate. The flute-shaped current equalizer has lower manufacturing cost and simple installation.

The invention discloses a novel PUF (physical unclonable function) circuit system structure which structurally comprises a technology sensitivity circuit, a deviation amplification circuit, a deviation comparison circuit, a hand showing circuit and a diffusion circuit which are connected sequentially, wherein the technology sensitivity circuit is used for acquiring technology deviation, and generating two or more signals with different physical properties; the deviation amplification circuit is used for amplifying a physical property difference among the two or more weak signals with the different physical properties; the deviation comparison circuit generates a 0 / 1 output according to the physical property difference among the two or more signals with the different physical properties and a certain rule; the hand showing circuit samples 0 / 1 output results generated by the deviation comparison circuit repeatedly, and generates a judgment output according to probability distribution of the output results; and the diffusion circuit converts one or more results generated by the hand showing circuit according to a certain algorithm, and allows probability statistics of the results to meet a requirement of uniform distribution. According to the structure, the output generated by the PUF structure is good in statistical distribution characteristic and high in stability.

The invention discloses a manufacturing method for a hierarchical pore metal fiber sintered plate. The manufacturing method comprises the following steps of preparing fibers with uniform lengths from a first metal material, and performing prepressing on the fibers by a die to form at least two fiber plates with different preset porosities; placing a middle layer prepared from a second metal material between the fiber plates with different porosities to form a laminated structure, and placing the laminated structure into the die for pressing; putting the die into a sintering furnace for sintering, cooling the die to room temperature in the furnace after sintering is finished, and detaching the die to obtain the hierarchical pore metal fiber sintered plate. According to the manufacturing method, the technology is simple, and the production efficiency is high; the manufacturing method has the advantages of high connection speed, small deformation, low connection temperature, low residual stress, high connection head strength and the like.

The invention discloses a method for estimating the state of charge (SOC) of a lithium ion battery based on IPF. The method comprises the following steps that a mathematic model of a lithium ion battery system is established, and a state equation and an observation equation of the system are obtained and discretized; the lithium ion battery is subjected to a constant-current pulse discharge experiment, and the open-circuit voltage of the lithium ion battery and the residual current SOC of the lithium ion battery are obtained; a relation curve between the open-circuit voltage of the lithium ionbattery and the residual current SOC of the lithium ion battery is fitted on a MATLAB, battery model parameters are identified, and thus an equivalent model of the lithium ion battery is established;and the SOC of the lithium ion battery is estimated through an improved particle filter. The SOC of the lithium ion battery is estimated through the mathematic model of the lithium ion battery systemand the improved particle filter, the characteristics of high estimation precision and fast estimation are achieved, and accordingly, the service life of the lithium ion battery is ensured.

The invention discloses a double-coating catalyst for a diesel engine on the basis of a modified hydrotalcite-derived oxide and a preparation method. The double-coating catalyst is characterized in that an outer coating contains PT and perovskite as main active components, BaO as an absorbent, CeO2-ZrO2 as a cocatalyst, and the hydrotalcite-derived oxide and gamma-Al2O3 as basic materials of the coating; an inner layer contains perovskite as a main active component, BaO as an absorbent, CeO2-ZrO2 as a cocatalyst, and the hydrotalcite-derived oxide, gamma-Al2O3 and SiO2 as basic materials of the coating; and cordierite honeycomb ceramic is adopted as a catalyst carrier. A preparation process comprises the following steps of: design of composition of the catalyst; preparation of the perovskite and the hydrotalcite-derived oxide, and coating of inner and outer catalytic coatings. The double-coating catalyst and the preparation process disclosed by the invention have the beneficial effectsthat by cyclic change of lean / rich condition of the diesel engine, the catalyst can catalyze adsorbing-reducing purifying reaction of NOx in exhaust by high efficiency; by adoption of the nonuniformdouble-coating preparation method, the distribution characteristics of functional materials are optimized, the cost of the raw materials is reduced and the NOx purifying effect and the durability areimproved.

The invention discloses a large-scale sparse array antenna efficient comprehensive method based on adaptive probability learning, and solves the problems of poor radiation characteristics and low efficiency caused by poor gradient density distribution of antenna units in an array aperture and high side lobe of a directional diagram in large-scale array antenna sparse array synthesis. According tothe method, the layout of a sparse array is combined with selection probability estimation of antenna units, an array comprehensive problem is combined with optimization of an adaptive probability learning model, and the method comprises the implementation steps of randomly initializing antenna array element distribution, and constructing an initial probability estimation model; rapidly calculating a far-field directional diagram through the excitation coefficient by means of fast Fourier transform; generating a new solution to participate in competition according to the probability model based on a probability learning strategy; adjusting a far-field directional diagram; array element excitation is obtained through fast Fourier transform, and updating the probability model. When the target function requirement is met or the maximum iteration frequency is reached, the optimal sparse array scheme is output, and the comprehensive problem of the large sparse array antenna is solved.

An yttrium iron garnet ferrite material and a preparation method thereof are disclosed. The chemical formula of the material is Y<3-x-y-z>GdxCayCuzFe<5-a-b-c>InaVbAlcO12. The preparation method mainlyincludes mixing ball milling; pre-firing; secondary ball milling; granulation molding; and sintering. The main advantages are that the prepared ferrite material has fine and uniform grains, which helps to obtain a dense microstructure, thereby improving the high-power endurance of the material; the material is suitable for the use of various high-power isolators in communication base stations; through Cu<2+> doping, the sintering temperature of the material is reduced properly, which is beneficial to material mass production.

A uniform fluid distribution system (2) for use with a liquid transfer system (100) for maintaining an interface between liquid phases within a large scale separator system including a cell of circular or rectilinear cross-section into which liquid may be introduced as discrete phases at an inlet zone occupying a first approximately transverse cross-sectional region of said cell and output at an outlet zone occupying a second approximately transverse cross-sectional region of said cell. Said distribution system (2) comprises at least one liquid inlet (24) and one distribution outlet (32), which are connected by an internal flow connection system (36). Wherein said distribution outlet (32) is an annular or rectilinear distribution-slot (32) with a radius or distance r to the midpoint between an inner slot-radius or distance from the cell center and an outer slot-radius or distance from the cell center, said radii or distances from the cell center defining a slot-width w, through which annular or rectilinear distribution-slot (32) liquid entering said inlet is distributed to said cell along an approximately horizontal plane, and said internal flow connection system (36) is formed such that it provides an essentially uniform fluid flow through the distribution-slot (32).

A method for enhancing the homogeneity and efficiency of carbon nanotube electron emission source. The method includes the following steps. First, a semi-manufactured cathode structure is prepared. Then, the cathode structure and the metallic plate are connected to the electrophoresis electrodes. After that, the side of the cathode structure to be electrophoresis deposited is kept a fixed distance in parallel with the metallic plate. Then, the electrophoresis deposition is performed to the semi-manufactured cathode structure by placing the combination into the solution of the electrophoresis tank. Later, an electric field is formed from a direct current voltage of a power supply. In this manner, the carbon nanotubes are deposited on the cathode electrode to form the electron emission source. After the deposition process of the cathode structure is completed, the combination is baked with a low temperature so as to remove the residual water solution on the cathode structure. Meanwhile, the indium chloride charger and the electrolyte hydroxide ions react to form indium hydroxide. Next, a sintering process is performed for re-oxidating the indium hydroxide on the cathode electrode layer back to indium oxide. Consequently, the electron conductivity of the carbon nanotubes and the cathode electron layer is enhanced.

The invention relates to a preparation method for a recyclable high-voltage direct current cable material with the function of inhibiting space charge, and belongs to the technical field of transmission equipment. The preparation method comprises the following steps: mixing isotatic polypropylene, an elastomer, an antioxidant, a fire retardant and a processing aid for 6-10 minutes under the conditions that the temperature is 190-200 DEG C, and the revolving speed is 40-60 r / min to prepare the high-voltage direct current cable material, wherein the ratio of isotatic polypropylene to the elastomer is 1:(0-0.7), and isotatic polypropylene and the elastomer are 100 parts by weight, the antioxidant is 0.5-1 part by weight, the fire retardant is 2-5 parts by weight, and the processing aid is 0.5-1 part by weight. The recyclable high-voltage direct-current cable material takes a mixture of a thermoplastic polymer material and the elastomer as the raw material, the melting point of the polymer material is higher than or equal to 150 DEG C, and the content of octylene in the elastomer is smaller than 14%. The recyclable high-voltage direct-current cable material has the advantages that under the condition that the thermomechanical properties of thermoplastic resin are improved, the space charge of the recyclable high-voltage direct-current cable material can be inhibited well, the recyclable high-voltage direct-current cable material can be recycled after the design lifetime is reached, and environment is not damaged.

An integrated circuit memory device includes a vertical stack structure containing an interlayer insulating layer and a gate electrode, on a substrate. A blocking dielectric region is provided on a sidewall of an opening in the stack structure. A lateral impurity region is provided, which extends between the blocking dielectric region and the interlayer insulating layer and between the blocking dielectric region and the gate electrode. A lower impurity region is also provided, which extends between the blocking dielectric region and the substrate.

The invention relates to the technical field of adaptive optical systems, in particular to a laser sodium guide satellite full emission link compensation system. The laser sodium guide satellite fullemission link compensation system comprises a first laser beam expanding system, a color selective mirror, a deformation mirror, a spectroscope, and a beam combining and beam expanding system which are arranged successively along an emission path, a second laser beam expanding system, a first beam shrinking device, a first wave front detector, a wave front detection and control system, and a reflecting mirror, and a calibration light source, wherein the first laser beam expanding system, the color selective mirror, the deformation mirror, the spectroscope, and the beam combining and beam expanding system are arranged in sequence along an emission path, the second laser beam expanding system is located in the incident direction of the beam combining and beam expanding system, the first beamshrinking device and the first wave front detector arranged successively are located on the reflection direction of the spectroscope, the wave front detection and control system is located on the reflection direction of the spectroscope, and the reflecting mirror and the calibration light source are arranged between the deformation mirror and the spectroscope. According to the laser sodium guidesatellite full emission link compensation system, distortions of sodium laser, abeam expanding transmission light path, and atmosphere turbulences are compensated by using a single deformable mirror,a double wave front detector and another laser with a different wavelength from the sodium laser to ensure that the sodium laser has good distribution characteristics and sodium guide satellite lightspot qualities when the sodium laser reaches a sodium layer.

The invention discloses a cryogenic insulation material for low-temperature storage, transportation and application equipment, and a preparation method thereof. The cryogenic insulation material is prepared by reacting a reinforced fiber, a filler and a rigid polyurethane foam foaming material, and is prepared from the components in parts by weight: 50 to 60 parts of reinforced fiber, 0.1 to 20 parts of filler, and 20 to 49.9 parts of rigid polyurethane foam foaming material. The preparation method of the cryogenic insulation material comprises the steps of blending the reinforced fiber and the filler according to the proportion so as to obtain a mixture; adding the rigid polyurethane foam foaming material into the mixture, fully mixing, and then pouring; and curing and forming to obtain the cryogenic insulation material. The cryogenic insulation material has the overall density being 80 to 200kg / m<3>, the heat conductivity coefficient being less than or equal to 22.0mW / (m.K) at the average temperature of minus 170 DEG C, the compression strength being larger than or equal to 1.5MPa at the temperature of minus 170 DEG C, the tensile strength being larger than or equal to 0.6MPa, and the combustion performance level being not lower than the B1 level in GB8624-2012 'building material and product combustion performance classification'.

In the winding splitting type stator, the invention can maximally enlarge the claw part in iron core split by pole unit to make the gap between claw parts smaller and to make continuous winding in each pole part at the condition of all iron cores being assembled together. On one side the winding equipment lets the stator iron core mounted on the driving shaft to transfer a pole via the driving shaft, on other side it makes copper wire pass through interval between claws to make continuous winding on pole. The part of stator iron core extending outward is located in the winding device, and all iron cores are assembled along circumferential direction.

The invention discloses a linked insulating rod bank used for a solid insulating ring main unit. The linked insulating rod bank comprises a circuit breaker insulating rod for connecting a first connecting lever connected to a circuit breaker transmission main shaft in a transmission mechanism with a movable conducting rod of a vacuum arc-extinguishing chamber and an isolated insulating rod for connecting a second connecting lever connected to an isolated transmission main shaft in the transmission mechanism with an isolated blade of a three-position isolated switch; the circuit breaker insulating rod comprises a lower connecting rod, an insulating rod main body, a compression spring, a first pull rod sleeve, a double-end adjusting rod and a first adjusting rod which are coaxially arranged from bottom to top. The insulating rod bank has reasonable interior insulating property and exterior insulating property, has an effect of preventing the deformation of the insulating rods, and is provided with a lever length adjusting structure, so that the parameters of the related mechanical characteristics of the vacuum arc-extinguishing chamber can be effectively adjusted.

The present invention provides a fluid mixing apparatus having a numbering-up mechanism that distributes plural kinds of fluids and concurrently performs multiple mixing or reactions, comprising: a rectifying section having a plurality of annular channels that rectify the plural kinds of fluids into respective concentric annular flows; a distribution section having a plurality of distribution channels that distribute the plural kinds of fluids rectified by the rectifying section into a plurality of flows; a converging section having a plurality of converging channels that converge different kinds of fluids among the plural kinds of fluids distributed by the distribution section; and a mixing / reaction section having a plurality of mixing / reaction channels that cause mixing or reaction of the plural kinds of fluids converged by the converging section, wherein a plurality of pressure loss increasing devices are provided in the distribution channels.

The invention discloses a method for improving the particle acceleration performance of an air jet mill. For the technical problem of how to achieve effective acceleration of particles in the air jet mill, the mode of supersonic flow field and electric field coupled acceleration is adopted to improve the material particle acceleration performance in air jet smashing. The method specifically includes the following steps that 1, materials are coarsely smashed to be 3 mm or smaller; 2, supersonic jet pipes in the air jet mill are manufactured with an insulating material, and outlets of the jet pipes are sleeved with annular iron blocks; 3, the supersonic jet pipes in a smashing cavity of the air jet mill are symmetrically distributed, and an impact target is arranged at the center of the smashing cavity; 4, positive voltage and negative voltage are applied to the annular iron blocks at the outlets of the jet pipes and the impact target respectively. By means of the method, multi-field coupled particle acceleration is achieved, and technical support is provided for further improving the smashing intensity and smashing efficiency of the air jet mill. Through process control of the technology, the material smashing intensity can be improved to 1.5-3 times, the particle size of materials can reach the submicron scale or even the nanometer scale, and the added value of materials can be effectively improved.

The invention relates to a steam discharge pipeline structure for directly preventing freezing of an air condenser in winter, which belongs to the technical field of energy power. Each group of condenser units is divided into a left sheet and a right sheet, which are obliquely arranged; in an odd-number group of condenser units, fair current units and adverse current units are alternately arranged; one steam leading-out pipeline which is vertical to an ascending pipe and parallel to a steam distribution pipe is led out from each ascending pipe, a branch pipeline which is led out from each steam leading-out pipeline is respectively connected with a condensed water collection pipeline of the adverse current unit part of the condenser unit, and the steam leading-out pipeline is higher than the condensed water collection pipeline in the vertical direction. On the basis that the existing system is not greatly changed, partial steam is led out from the air condenser distribution pipe to be used for improving the distribution characteristics of the air condensed steam units, the large-area freezing of a steam side runner of the air condensation unit can be prevented and inhibited, an effect for rapidly thawing can be realized when the condensed water collection pipeline is frozen, an air cooling unit can be maintained to run safely under the low backpressure simultaneously, and the economical performance can be improved.

The present invention provides a chromatography medium comprising one or more electrospun polymer nanofibers which in use form a stationary phase comprising a plurality of pores through which a mobile phase can permeate and use of the same.