57results about How to "Optimize spatial distribution" patented technology

A method for diffusely distributing a micro-nano particle reinforced phase in a composite material is characterized in that the method comprises the following steps: 1, ball-milling the micro-nano particle reinforced phase and matrix powder by adopting a mechanical ball-milling process in order to improve the wettability of the micro-nano particle enhanced wetting phase and a metal melt; 2, melting the metal melt, adding the molten metal melt to the ball-milled mixed powder, and processing the obtained melt by utilizing an ultrasonic field or an ultrasonic and electromagnetic compound fieldt; and 3, carrying out cooling molding or casting molding to prepared a micro-nano particle reinforced phase diffusely distributed metal matrix composite material. The method realizes the diffusive distribution of one or more of ceramic particles of SiC, WC, Al4C3, B4C, ZrB2, TiB, Al2O3 and AlN in metal materials of aluminum alloy, magnesium alloy and the like, and the high-quality metal matrix composite material with good compactness and uniform performances can be obtained through the method.

A rolling bearing fault on-line detection and state assessment method is disclosed. The method comprises the following steps: twelve dimensional dimensionless parameters are extracted; the twelve dimensional dimensionless parameters comprise six dimensional time domain statistical parameters, three dimensional frequency domain statistical parameters and three dimensional dimensionless parameters in a small wave envelope spectrum; standardized reconstruction characteristic vectors can be obtained; whether a rolling bearing malfunctions is determined, and a state of the rolling bearing is assessed. Via the rolling bearing fault on-line detection and state assessment method, the twelve dimensional dimensionless parameters which can be used for effectively representing the state of the rolling bearing can be automatically extracted, the twelve dimensional dimensionless parameters are subjected to decorrelation and standardization operation, standardized reconstruction characteristic vectors that are distributed to form a hypersphere with an original point being a sphere center, and fault detection and state assessment of the rolling bearing can be realized via 2-norms of the standardized reconstruction characteristic vectors; difficult problems of long on line training time, low efficiency, and hard-to-obtain fault samples and the like of a rolling bearing state assessing model can be solved.

The invention discloses an intercropping cultivation method of corn and rice beans, and relates to a cultivation method of the corn and the rice beans. The invention aims to solve the problems that accumulated temperature of a high latitude area in northeast is insufficient, the growth period is short, the yield and plant benefit are low, and the farming enthusiasm of peasant is poor under an existing planting pattern. The intercropping cultivation method comprises the steps of 1, plowing in autumn, harrowing and careful soil preparation; 2, selection of improved varieties; 3, seed treatment; 4, timely sowing and reasonable close planting; 5, field layout of intercropping cultivation method of the corn and the rice beans; 6, scientific field management; 7, timely harvest. According to the intercropping cultivation method disclosed by the invention, 2000 to 3000kg of clean production rice beans per hectare is increased under the situation that the yield of the corn is not reduced, the yield of crops and the benefits in a unit area are significantly improved, and the advantages of increasing production and increasing efficiency are obvious. The intercropping cultivation method of the corn and the rice beans is applied to the field of crop planting.

The invention provides a high-yield and high-efficient cultivation method for water manure induction and root confinement of asparagus. The method comprises the steps of seedling culture, weather enclosure building, preparation before planting, field planting, induction and root confinement cultivation, asparagus harvesting and disease control. The step of induction and root confinement cultivation comprises the substeps that a water conveying pipe is laid, wherein water manure is applied in a 30-60 cm deep and 60-80 cm wide soil layer; precise water management is performed, wherein the relative water content of soil of the 30 cm soil layer is maintained to be 55-65% in the asparagus harvesting period and maintained to be 65-75% in the vegetative period; formula fertilization is performed, wherein precise fertilization is performed according to the fertilizer requirement for various growth stages of the asparagus. By the adoption of the method, root systems of the asparagus are mainly distributed inside the 30-60 cm deep soil layer, and roots are prevented from being damaged; compared with the prior art, the depth of the soil layer where the root systems are mainly distributed is decreased by 15-20 cm, water is saved by 70-80%, fertilizer is saved by 50-55%, the consumption of a chemical agent is decreased by 60-70%, and the yield of the asparagus is increased by 25-35%.

The invention relates to a magnetic fluid sieving device, which mainly comprises a fluid separation sieve and a magnetic loop. The device is characterized in that magnetic wires and nonmagnetic wires in the fluid separation sieve formed by multiple layers of screen meshes in a plurality of independent fluid separation cavities under magnetic poles divide a magnetic field space into several minimal spaces of high gradient magnetic potentials and an equal magnetic potential; magnetic particles in a fluid are enriched in the high gradient magnetic field spaces under the action of magnetic force when the fluid flows through the fluid separation sieve; and when the magnetic poles relatively move along the direction of the nonmagnetic wires, the magnetic particles are acted by the magnetic force of the magnetic poles, move with the magnetic poles along a direction nearly orthogonal to a fluid flow channel, and are separated out. The magnetic fluid sieving device of the invention has the advantages of realization of continuous and efficient separation of the magnetic particles from the fluid, low operation energy consumption, and simple maintenance, and can be used for environmental protection, magnetic metal recovery, and magnetic mineral sorting.

The invention discloses a display screen and a display device. The display screen comprises a plurality of pixel points arranged in an array, each pixel point is provided with at least two light emitting sources, the light emitting sources are fixed on a fixed plate and are arranged on a direction vertical to the plane of the display screen at a set distance interval, and each light emitting source is sued for presenting image data of the pixel points through the light emitted by the light emitting source. A rotation driving device is used for driving the light emitting source to rotate for anangle to adjust the direction of the emergent light. According to the display screen and the display device provided by the embodiment of the invention, the light emitting sources of the pixel pointsare driven by the rotation driving device to rotate, so that a viewer can obtain the viewing experience at any location in front of the screen.

The invention provides an intravascular stent with a medicament carrying groove. The stent comprises a plurality of support rods and a plurality of connecting rods, wherein the support rods and the connecting rods are arranged longitudinally and are tubular; adjacent support rods are connected with each other through the connecting rod; each support rod is provided with the medicament carrying groove which comprises a top opening, and a bottom surface and left and right side faces which are formed by intersecting with the support rod; and at least one side face of the medicament carrying groove of the support rod is provided with a side face medicament release port. In the invention, a medicament space is partitioned into a V-shaped space along the outer side direction (one side tightly close to a vascular wall) of the support rod and a V-shaped space along the cross section direction (the cross section direction of a blood vessel) of the support rod and is closer to an effective medicament releasing space of a fully-coated structure, the medicament releasing period of the structure is longer than the medicament releasing period of the fully-coated structure and the restenosis of a lesion blood vessel is reduced without affecting endothelialization.

The invention provides a staged combustion chamber head with an entrainment pre-film plate structure. The staged combustion chamber head comprises a pre-combustion stage and a main combustion stage arranged outside the pre-combustion stage in a sleeving mode. The main combustion stage comprises an inner ring and a sleeve arranged outside the inner ring in a sleeving mode. The inner ring is provided with a plurality of spray holes distributed in the circumferential direction. An annular air channel is formed between the inner ring and the sleeve. Axial rotational flow blades and an entrainment pre-filming plate are sequentially arranged in the air channel from front to back. The multiple axial rotational flow blades are arranged, and the multiple axial rotational flow blades are arranged in the circumferential direction. The entrainment pre-filming plate is annular and is formed by arranging a plurality of segmented arcs in the circumferential direction. The spray holes are arranged right opposite to the arc ridge of the entrainment pre-filming plate, and two segmented arcs are arranged between any two adjacent spray holes. The radial heights of the front end and the rear end of the arc ridge are both larger than the radius of the outer surface of the inner ring and smaller than the radius of the inner surface of the sleeve.

The present invention pertains to the technical field of energy resource chemical industry, and in particular relates to a continuous reaction device and process for synthesizing polyoxymethylene dimethyl ethers by using paraformaldehyde and methylal as feedstock or using trioxane and methylal as feedstock in the presence of an acidic catalyst. The continuous reaction device comprises multiple slurry bed stirred tank reactors connected in series or in combination of series connection and parallel connection, and also comprises an on-line solid-liquid separation device to perform separation of the reaction mixture from the catalyst. Each of the tank reactors is provided with an axial-flow stirring paddle having 2-6 blades per layer, to ensure sufficient mixing of the reactants with the catalyst. By using a distributed control pattern of reaction temperature and feedstock supplying to enhance the process and to optimize the operation, the reaction device of the present invention can effectively achieve large-scale continuous production of polyoxymethylene dimethyl ethers, and both the yield rates and the distribution of the reaction product are better than those of prior art.

The invention discloses a heat accumulating type electric heating optimal configuration method considering power flow balance of a power distribution network, which comprises the following steps of: calculating hourly heat load demand of the whole heating season according to historical air temperature and solar radiation data, and processing the uncertainty of the heat load demand by adopting a scene reduction method; establishing a heat accumulating type electric heating multi-target double-layer optimization configuration model; solving by adopting a multi-target particle swarm optimization algorithm to obtain a series of Pareto solution sets; the weight of each target value is determined through information entropy, and the schemes are sorted by using an approximate ideal solution sorting method to select an optimal compromise solution from the schemes; according to the method, unreasonable distribution of power flow in the line is improved, overlarge voltage offset is adjusted, the problem that the voltage is too low and even the voltage is out of limit due to access of the electric heating load is solved, it is guaranteed that the voltage quality meets the requirement, and a power distribution network can operate safely and stably.

A repulsion mechanism for an ultra-fast circuit breaker, disclosed by the present invention, comprises a repulsion coil, a repulsion disc and a mechanism shaft. The repulsion coil comprises a chassis,an insulating framework, a coil winding, an iron core and a fixing screw, and the repulsion disc comprises a main disc piece, a repulsion disc framework and a fixing piece for riveting the main discpiece and the repulsion disc framework. Compared with the prior art, the repulsion mechanism is more compact in scheme overall design, the magnetic field distribution of the rapid repulsion mechanismis optimized, the utilization efficiency of the repulsion mechanism for electromagnetic energy is improved, and the requirement for energy storage of a driving loop is lowered, and therefore the sizeand the cost are reduced.

The invention discloses a lightweight fractal gradient gear. The lightweight fractal gradient gear comprises a gear body and is characterized by further comprising two plate bodies, wherein the platebodies are fixed to the two sides of the gear body; and the gear body is of a porous lightweight structure, wherein the porous lightweight structure at least is composed of a first-stage gradient holegroup, a second-stage gradient hole group and a third-stage gradient hole group which are constructed in a staggered mode. According to the lightweight fractal gradient gear, a honeycomb type multi-cell structure serves as a prototype, and gradient type, split type and multi-type design is carried out, so that the maximum lightweight of the gear is achieved, and manufacturing is convenient.

A digital display device is provided with a digital display circuit with a display lamp and a light guiding device matched with the display lamp, wherein the digital display circuit is assembled on anexternal equipment circuit board; the light guiding device is fixedly arranged on the external equipment circuit board is arranged above the digital display circuit. The digital display device disclosed by the invention has the beneficial effects that the digital display circuit is directly integrated on the external equipment circuit board which requires to be additionally provided with digitaldisplay function equipment, and then the light guiding device is arranged on the external equipment circuit board, so that a digital display function which is the same as that of a nixie tube can be generated, and the cost and the installation time can be greatly reduced; the digital display device integrated on the external equipment circuit board is capable of simultaneously reducing the whole thickness and the occupied space of the external equipment circuit board, and space distribution of other electronic elements in the external equipment circuit board is convenient.

The invention relates to the technical field of magnetic health care equipment and in particular relates to a dynamic magnetic massager. The dynamic magnetic massager comprises a flexible cushion, wherein a battery box, a control box, vibratory massage devices and a gyromagnetic device are arranged on the flexible cushion; the control box is electrically connected with the battery box, the vibratory massage devices and the gyromagnetic device; and a first groove, a second groove, third grooves and a fourth groove for placing the battery box, the control box, the vibratory massage devices and the gyromagnetic device are respectively formed in the flexible cushion. The dynamic magnetic massager has high stability, good magnetic health care effects, good massage effects and high use comfort level.

The invention relates to a method for controlling fermentation temperature of Maotai-flavour Baijiu. Temperature of yellow serofluid is controlled to be within 50 DEG C to 63 DEG C and yellow water is used as a heat-transfer medium for controlling the fermentation temperature in a solid biochemical reactor for Maotai-flavour Baijiu.