98results about How to "Increase inhomogeneity" patented technology

The invention provides a flexible piezoresistive touch sensor array and a preparation method thereof. The sensor array comprises N*N separated piezoresistive layers and a coplanar electrode layer. The piezoresistive layers are arranged on the coplanar electrode layer. Each piezoresistive layer comprises an upper finger pressing layer, a middle sensitive layer and a bottom sensitive layer, wherein the three layers are each provided with a micro pyramid; the coplanar electrode layer comprises a polymer electrode substrate and N*N gold electrode pairs located on the polymer electrode substrate. The piezoresistive layers adopt polymer films with the micro pyramid, and due to the three-layer structure, the sensitivity of the sensor at the low-voltage region can be greatly improved. In addition, in order to overcome the defect that a traditional touch sensor is large in crosstalk due to a sandwiched structure, the coplanar electrode layer is adopted, all electrodes are located on the same plane, each piezoresistive layer is attached to the corresponding electrode pair, the piezoresistive units are completely separated, and the sensitivity and anti-interference capacity of the sensor are effectively improved.

The present invention provides magnetic resonance multidimensional selectivity based on spatiotemporal encoding (SPEN). In particular, multidimensional selectivity is achieved by the concurrent application of frequency-swept irradiation and magnetic field gradients for the sequential manipulation of spins in space in one dimension or more. Simultaneous spatial and spectral selectivity is disclosed.

A method for magnitude constrained phase contrast magnetic resonance imaging (MRI) is provided. The method utilizes an assumption that the image magnitude is shared across a series of images reconstructed from a set of phase contrast enhanced k-space data. In this manner, one common magnitude image and a plurality of phase images are reconstructed substantially contemporaneously from the acquired image data. The method is further applicable to other phase contrast MRI methods, such as phase contract velocimetry. Moreover, simultaneous phase contrast velocimetry and chemical shift imaging, in which water and fat signal separation is achieved, is provided.

A modified montmorillonite with exposed and increased electric charges on its end face and between layers, lower ordered structure in C axis and improved curative effect for the reversible therapy of chronic atrophic gastritis is disclosed. Its preparing process is also disclosed.

The present invention is to provide a technique for uniformly processing a substrate surface in the process of processing a substrate by supplying a gas. The inside of a shower head having gas-jetting pores for supplying a gas to a substrate is partitioned into a center section from which a gas is supplied to the center portion of a substrate, and a peripheral section from which a gas is supplied to the peripheral portion of the substrate, and the same process gas is supplied to the substrate from these two sections at flow rates separately regulated. The distance from the center of the center section of the gas supply unit to the outermost gas-jetting pores in the center section is set 53% or more of the radius of the substrate. Moreover, an additional gas is further supplied to the peripheral portion of the substrate.

The invention relates to a magnetic oxide supporting active carbon catalytic microwave degradation method of a surfactant. The technical scheme of the method comprises: (a) a magnetic oxide supporting active carbon preparation process comprising dipping active carbon into Fe (NO3)3 or Ni (NO3)2 solution, carrying out a magnetic stirring process for 10 to 13 hours, filtering and collecting precipitates, washing the precipitates to a neutral pH through deionized water, drying, calcining at a temperature of 250 to 350 DEG C for 1 to 4 hours, and cooling to obtain a magnetic oxide supporting active carbon catalyst, and (b) a microwave degradation process comprising adding the magnetic oxide supporting active carbon catalyst obtained from the process (a) into surfactant-containing solution andcarrying out an irradiation process on the mixed solution by a microwave power of 150 to 750 W for 0.5 to 3.0 minutes, wherein a weight ratio of a surfactant to the magnetic oxide supporting active carbon catalyst is 1: (4 to 24). The method provided by the invention is a novel method for processing surfactant-containing wastewater and has the advantages of high degradation efficiency, fast degradation speed, low cost, no secondary pollution and the like.

The invention relates to a rare earth aluminum alloy and a preparation method thereof, and belongs to the technical field of alloy synthesis. The rare earth aluminum alloy is prepared through vacuum suction casting of an aluminum basal body and a rare earth source; and the rare earth aluminum alloy is obtained by performing primary smelting on the aluminum basal body, refining, adding the rare earth source into a refined product, and performing impurity removal for vacuum suction casting molding. The rare earth aluminum alloy is applied to the processing of rare earth aluminum alloys and radiator section bars, and has such advantages as high compactness, good wear resistance, good weldability and high heat conductivity.

A method of making an intermetallic negative electrode for an electrochemical cell. One or more metal salts is dissolved in an organic solvent forming a solution to which is added a metal reducing agent to form an intermetallic compound. Thereafter, the intermetallic compound precipitates and is separated and formed into an electrode. The electrodes are useful in electrochemical cells and batteries.

The invention discloses a device for controlling flow separation caused by interference between high-Mach-number shock waves and boundary layers in the technical field of hypersonic flight vehicles. The device comprises a base flow-dividing wedge and a miniature trailing edge vortex generator, wherein the base flow-dividing wedge in a lean-back wedged structure is arranged at the front end of a shock wave and boundary layer interference region, and the distance, in particular the distance between a trailing edge and a shock wave incidence point, is smaller than or equal to the thickness of three boundary layers; the miniature trailing edge vortex generator is arranged on the upper surface of the trailing edge of the base flow-dividing wedge. According to the device, a dropping vortex structure can be generated on the side edge of the flow-dividing wedge to take away a low-energy fluid of the interference region, and a high-turbulivity shearing layer on the trailing edge serves as a buffer strip. The device can control the flow separation caused by the interference between the shock waves and the boundary layers, realizes separation flow control under the condition of Mach number of 4 to 10, and has the characteristics of simple structure, stable performance and the like.

The invention discloses a corrosion resistant metal coating for a gear box inner surface. The corrosion resistant metal coating comprises the following components by mass percentage: 0.03-0.05% of C, 0.45-0.48% of Mn, 12.76-12.79% of Cr, 6.12-6.15% of Ni, 0.16-0.18% of Mg, 0.22-0.25% of Mo, 0.27-0.29% of Co, 0.26-0.28% of V, 0.22-0.24% of Ti, 0.21-0.23% of Na, 0.12-0.15% of Ga, 0.32-0.35% of Eu, 0.12-0.14% of Lu, 0.62-0.68% of La, and the balance Fe.

The invention relates to a preparation method of a radial orienting permanent magnetic ring and a radial orienting device used by the same. The radial orienting device comprises an inner magnetic pole capable of also being used as a die core and a die for forming a die cavity together with the inner magnetic pole; the outside of the die is sleeved with an outer magnetic pole for forming an orienting magnetic field; and the outer magnetic pole moves up and down along the axial direction of the inner magnetic pole along with the continuous up-and-down change of the height of magnetic powder in the pressing process so as to implement that each position of a magnet along the axial direction is sufficiently and uniformly oriented. On the basis of 360-degree radial magnetization, an outer magnetic pole head of the outer magnetic pole of the radial orienting device moves up and down to be subjected to selective radial magnetization along displacement change of the height of a blank when a circular ring-shaped magnet is pressed and formed; radial orienting uniformity of a radial ring is greatly improved; and moreover, nonuniformity of the radial ring in the axial direction is improved to a considerable degree.

The invention provides a quick spheroidizing annealing process of bearing steel tubes. The quick spheroidizing annealing process comprises the following steps: 1), heating the bearing steel tubes until Ac1 reaches 20 DEG C to 30 DEG C or above, and keeping a temperature for 20 minutes to 30 minutes; 2), cooling the bearing steel tubes subjected to heat insulation at a first time until Ar1 reaches10 DEG C to 30 DEG C or below, and keeping the temperature for 10 minutes to 20 minutes; 3), repeatedly carrying out the step 1) and the step 2), and performing circulating heat treatment for many times on the bearing steel tubes subjected to heat insulation at a second time; 4), cooling the bearing steel tubes subjected to heat treatment for many times along with a furnace to 680 DEG C, and keeping the temperature for 10 minutes to 20 minutes; 5), cooling the bearing steel tubes subjected to heat insulation in the step 4) along with the furnace to 610 DEG C to 650 DEG C; and 6), performing air cooling on the bearing steel tubes subjected to furnace cooling to a room temperature. Isothermic spheroidizing treatment, that is, circulation austenitizing and isothermic spheroidizing processes,on the bearing steel tubes in a double-phase area is carried out repeatedly, thinner sheet carbide formed in cooling of austenite is re-dissolved, precipitated and separated on undissolved carbide particles, and thicker sheet carbide is crushed to realize quick spheroidizing, and the spheroidizing annealing time is shortened at the same time.

The invention discloses a corrosion-resistant metal coating used for the outer surface of a gear box. The corrosion-resistant metal coating comprises, by mass, 0.06%-0.08% of C, 0.15%-0.18% of Mn, 10.76%-10.79% of Cr, 2.12%-2.15% of Ni, 0.13%-0.15% of Mg, 0.21%-0.23% of Mo, 0.25%-0.27% of Co, 0.06%-0.08% of V, 0.42%-0.44% of Ti, 0.22%-0.25% of Na, 0.17%-0.19% of Ga, 0.22%-0.25% of Ce, 0.16%-0.18% of Nd, 0.32%-0.38% of La and the balance Fe.

The invention discloses a method for manufacturing a high carbon steel wheel. A preheating treatment process is set after a forging, stamping and rolling process and before an isothermal process. The process method comprises the following steps of: performing air cooling on the high carbon steel wheel workpiece after being subjected to high temperature forging, stamping and rolling to between 600 and 650 DEG C; heating the high carbon steel wheel workpiece, wherein the heating temperature is between 730 and 750 DEG C; and the heating time is 30 to 40 minutes; performing part of austenite transformation on a wheel rim; performing furnace cooling on the high carbon steel wheel workpiece to between 600 and 630 DEG C; and performing the isothermal process on the wheel workpiece. By adopting the technical scheme, the hydrogen content is reduced, and a hydrogen induced crack is inhibited; and the impact toughness of the high carbon steel wheel rim is effectively improved and the use safety of the product is ensured on the premise of ensuring the intensity and the rigidity of the high carbon steel wheel workpiece basically unchanged and a ferrite-pearlite microscopic structure.

The invention relates to a household garbage vertical burning rotary grate furnace system, which comprises a discharge transmission device, a bracket, a slag discharge pipe, an annular air duct, a multilayer tower grate, a burning furnace main body, a transmission upright post, a draft fan, a Roche fan, a rotary feed distribution device, a garbage feed dryer, a cam device, a feed transmission device, a fuel gas connecting hood, a feeding outer cylinder, a feeder, a feeding hopper, a fuel gas circuit pipe, a fuel gas connecting hood, a feed connecting hood and a secondary blower, wherein the bracket supports the burning furnace main body; the lower part of the burning furnace main body is provided with the multilayer tower grate; the lower part of the multilayer tower grate is connected with the slag discharge pipe; the discharge transmission device is connected with the multilayer tower grate through the transmission upright post; the top over of the burning furnace main body is provided with the rotary feed distribution device; the annular air duct is arranged on the burning furnace main body at the position where the multilayer tower grate is arranged; the garbage feed dryer is provided with the cam device and the feed transmission device; a garbage transmission pipe is connected with the rotary feed distribution device through the fuel gas connecting hood; the feeding hopper is connected with the garbage transmission pipe through the feeding outer cylinder and the feeder; the fuel gas circuit pipe is connected with the garbage transmission pipe and the connector of the feeding outer cylinder through the fuel gas connecting hood; and the fuel gas circuit pipe is connected with the gas outlet of the burning furnace main body through the secondary blower.

In a method for adjustment of a shim device of a magnetic resonance apparatus before an image acquisition in a body region that has a volume of interest, a field distribution is measured in a region encompassing the volume of interest produced with a shim device set according to a basic shim data set. A shim data set that is optimized for the volume of interest is determined by a control device starting from the basic shim data set, dependent on the field distribution; and the optimized shim data set is used for adjustment of the shim device. The basic shim data set is selected from a databank of body region-specific input shim data sets.

The invention relates to a method for improving the uniformity of doping concentration of a silicon epitaxial layer for a photosensor. The method includes the steps of introducing hydrogen and hydrogen chloride gas into a reaction chamber; coating the surface of an epitaxial reaction substrate with an undoped polysilicon layer; loading a silicon base sheet onto the polysilicon, and purging the epitaxial reaction chamber sequentially with nitrogen and hydrogen; heating the epitaxial reaction substrate; introducing hydrogen chloride gas to polish the surface of the silicon base sheet; purging the reaction chamber by quick periodic alternating variation of flow; growing a first intrinsic epitaxial layer; introducing hydrogen into the reaction chamber for purging; growing a second intrinsic epitaxial layer; purging the reaction chamber by quick periodic alternating variation of flow; growing a doped epitaxial layer; and after the growth of the epitaxial layer is completed, stopping heating, and finally taking out the chip. The beneficial effect is that the on-chip non-uniformity is reduced from 5.09% to the level of 1.48%, the control capability is improved, and the process capabilitycan meet the requirements of users.

The invention relates to a phantom device for reproducing the fluid perfusion in a body, said device comprising a phantom organ that may be introduced into a scanner, said phantom organ comprising a housing in which are defined a plurality of fluid channels, suitably of differing cross-sectional areas; a feed tube arranged to supply liquid to a first end of all of said channels and means for collecting liquid from the other end of the channels. Alternatively or additionally, the device may comprise an element comprising a phantom heart through which fluid can flow, wherein the phantom heart comprises a first chamber representing a right atrium which is arranged to receive fluid from a fluid supply, a second chamber representing a right ventricle which receives fluid leaving said first chamber, a third chamber representing a left atrium which receives fluid leaving the second chamber and a fourth chamber representing left ventricle which receives fluid leaving the third chamber; and wherein a phantom thoracic system is interposed between the second chamber and the third chamber.Uses of the device in quality control, validation or calibration of monitoring devices such as magnetic resonance (MR) or computerised tomography (CT) scanners, in teaching or training of machine operatives or for research purposes including for research into scanners, scanning techniques or reagents such as contrast agents used in such processes, form further aspects of the invention.

The invention relates to a processing method of an irradiation quality-guaranteed glutinous rice lotus root, and relates to the field of food processing and irradiation quality-guaranteed technologies. The processing method comprises the following steps: after cleaning a peeled and lotus rhizome knot-removed lotus root segment, steeping the lotus root segment after color-protecting and warm water processing into a CaCl2-containing soak solution, then adding glutinous rice containing sodium alginate tech grade to steam, and carrying out candying, sealed packaging and irradiation quality guarantee. A prepared product is moderately crisp, nice in glutinous sweet and long in quality-guaranteed period.

The invention discloses a terahertz gyrotron gallery mold backward wave interaction circuit and a control method thereof. According to the circuit and the control method, two gradation structures areled into a main cavity body, so that the nonuniformity of the circuit is improved; the cut-off frequency of a main high angular index competition mode is higher than that of an operating mode, so thata start oscillation characteristic of the circuit is that the circuit is particularly sensitive to a nonuniform circuit in a single-cavity oscillation state; a start oscillation current curve is greatly improved and effectively inhibited; and single-mode stable high-efficiency output of a high-order gallery operating mode is achieved. The circuit can specifically inhibit mode competition nearby the high-order gallery mode in a terahertz gyrotron backward wave oscillator; the operating stability and the operating efficiency of the gyrotron backward wave oscillator can be improved; and the significance from microwave and millimeter wave bands to a terahertz wave band is important for the gyrotron backward wave oscillator.

A method of making a magnetic material includes a step of providing a first material in the form of a core powder containing Nd, Fe and B. The first material is combined with the second material to form a powder combination. The second material includes a component selected from the group consisting of Dy, Tb, and combinations thereof. The powder combination is encapsulated to form an encapsulated powder combination. A magnetic field is applied to the powder combination during encapsulation and thereafter to align the magnetic dipoles therein. The encapsulated powder combination is isostatically pressed with heat to form the magnetic material.

The invention discloses steel used for punching die and a manufacturing method thereof. The weight percentages of the chemical composition of the steel are as follows: C, 0.35 to 0.40 wt percent; Mn, 0.30 to 0.60 wt percent; Cr, 4.70 to 5.50 wt percent; Si, 0.30 to 0.50 wt percent; Mo, 3.00 to 4.00 wt percent; V, 0.40 to 0.70 wt percent; Cu, less than or equal to 0.30 wt percent; Ni, less than or equal to 0.30 wt percent; P, less than or equal to 0.020 wt percent; S, less than or equal to 0.015 wt percent; the rest, Fe and inevitable impurity elements. The manufacturing method mainly comprises the following steps: 1) casting of ingots; 2) heating the ingots in a blooming mill furnace and carrying out heat preservation for three to five hours; 3) rolling and forging into products. The steel used for punching die produced by the invention has the advantages of improving performance indexes significantly, lowering production cost and improving the economic benefit of the products.

The invention discloses a heat treatment method for high-speed steel for rollers. The chemical composition of the high-speed steel consists of the following components in percentage by weight: C: 3.2 to 3.6; W: 1.2 to 1.6; Mo: 5.0 to 7.0; V: 2.0 to 3.0; Cr: 8.0 to 10.0; Al: 0.1 to 0.4; Ni: 2.2 to 2.6; Co: 6.5 to 7.5; Nb: 0.2 to 0.4; Ti: 0.2 to 0.4; Ce: 0.4 to 0.6; Zr: 0.05 to 0.20; Si: less than 0.8; Mn: less than 1.5; S: less than 0.03; P: less than 0.04; and the balance of Fe. After the high-speed steel is cast to form a billet and the billet is roughly machined, the billet is quenched, the quenching process is carried out when a furnace is heated to 1260 DEG C to 1280 DEG C, the temperature is kept for 3 to 5 hours, the billet is then quenched in oil, and is tempered after being quenched, the tempering process is carried out when the furnace is heated to 620 DEG C to 650 DEG C, the temperature is kept for 5 to 7 hours, the furnace is cooled and then heated to 610 DEG C to 630 DEG C again, the temperature is kept for 5 to 7 hours, and after air cooling and tempering, finish machining is carried out, so that a roller, the dimensional precision and surface roughness of which come up to requirements, is obtained.

The invention discloses a segmented heating type thermocouple liquid level sensor comprising a hot end plug, a cold end packing tube, a plurality of sections of heating wires, a plurality of differential thermocouples, an insulating material and an armored casing; one node of each differential thermocouple is located at the middle position of each section of heating wire and the other node has a certain distance from each section of heating wire; the plurality of heating wires, the plurality of differential thermocouples and the insulating material are armored in the armored casing; the measuring end of the armored casing is welded with the hot end plug and the other end of the armored casing is provided with the cold end packing tube; and the surface of the heating section of the armoredcasing is provided with a groove. Due to axial segmented heating, non-uniformity of axial temperature distribution on the surface of the armored casing can be effectively improved, and the flexibility of a measuring temperature difference is improved, so that the reliability of liquid level measurement is improved.

A tire ( 2 ) includes a belt ( 12 ) provided on a carcass ( 10 ) and a band ( 14 ) for covering the belt ( 12 ). The band ( 14 ) includes a full band ( 36 ) and a pair of edge bands ( 38 ) provided in the vicinity of a shoulder and positioned on an outside in a radial direction of the full band ( 36 ). The full band ( 36 ) has a first band cord ( 40 ) wound spirally in a substantially circumferential direction. The edge band ( 38 ) has a second band cord ( 44 ) wound spirally in the substantially circumferential direction. A modulus of the second band cord ( 44 ) is higher than that of the first band cord ( 40 ). In the tire ( 2 ), it is preferable that an outer end ( 50 ) of the full band ( 36 ) should be provided on an outside of an outer end ( 48 ) of the belt ( 12 ) in an axial direction. An outer end ( 52 ) of the edge band ( 38 ) is identical to the outer end ( 48 ) of the belt ( 12 ) or is provided on an inside thereof.

In a method for adjustment of a shim device of a magnetic resonance apparatus before an image acquisition in a body region that has a volume of interest, a field distribution is measured in a region encompassing the volume of interest produced with a shim device set according to a basic shim data set. A shim data set that is optimized for the volume of interest is determined by a control device starting from the basic shim data set, dependent on the field distribution; and the optimized shim data set is used for adjustment of the shim device. The basic shim data set is selected from a databank of body region-specific input shim data sets.

The invention discloses a method for preparing an amorphous / amorphous nano multilayer film with improved plasticity. According to the method, a first amorphous layer is deposited by adopting a magnetron sputtering method, then a second amorphous layer is deposited on the first amorphous layer, and alternate depositing is carried out so as to form the amorphous / amorphous nano multi-layer film. Themethod has the advantages that the prepared multi-layer film is clear in interface, the multi-layer film with improved plasticity can be easily obtained by controlling the thickness of a single-layerfilm body, and therefore the possibility can be provided for preparing an amorphous / amorphous nano multi-layer film material with controllable mechanical property.

The invention relates to a knitting machine (21) for processing rovings (Y) comprising a number of knitted points (22), the needles (24) of which are each fed rovings (Y) pretreated accordingly in a roving treatment device (26) in order to produce knitted fabrics therefrom. Upstream of the knitted points (22), roving treatment devices (26) are provided, which each comprise an unraveling device (30) for unraveling the rovings (Y) into individual fibers (F) and a friction spinning device (40) for processing the individual fibers (F) into a transport-stable yarn (T) having the desired fineness. In addition, a method for processing rovings (Y) into a knitted fabric on a knitting machine (21) is described.

The invention discloses an asymmetric self-shielding open type magnetic resonance imaging superconducting magnet, comprising a superconducting main coil, a superconducting shielding coil, a superconducting axial shim coil (4) and a superconducting radial shim coil (5). All the coils are asymmetrically arranged in a pre-arranged coil area. The superconducting axial shim coil (4) and the superconducting radial shim coil (5) are respectively arranged on two cylindrical frameworks, and midplanes of the two cylindrical frameworks are coincident with a central point (9) of a spherical imaging area (6); and the superconducting main coil and the superconducting shielding coil deviate from the center of the superconducting magnet by 10cm in an axial direction, a high-uniformity magnetic field with the magnetic field peak-to-peak value nonuniformity being 10ppm is generated in the spherical imaging area (6) with the diameter being 50cm in distribution, and the superconducting axial shim coil (4) and the superconducting radial shim coil (5) respectively generate a correcting magnetic field so as to improve the magnetic field peak-to-peak value nonuniformity of the spherical imaging area to be superior to 1ppm.