31results about How to "Change the spatial distribution" patented technology

A method to control tissue / device heating at implantable medical devices including neuroprosthetic devices. In a first embodiment, thermal conductivity of components of the implantable medical devices including the neuroprosthetic devices is increased. In a second embodiment, the implantable medical devices including the neuroprosthetic devices are cooled by using heat-sinks. In a third embodiment, portions of the implantable medical devices including the neuroprosthetic devices are replaced with specific thermal properties. In a fourth embodiment, the implantable medical devices including the neuroprosthetic devices are coated with a drug / material that will induce surrounding tissue to become more resistant to temperature increases. In a fifth embodiment, the temperature increase near the implantable devices including the neuroprosthetic devices is determined using a modified bio-heat transfer model. In a sixth embodiment, the shape of the outer or the inner surface of the device is modified.

The invention relates to a translation invariant wavelet remote sensing image restoration method in combination with reciprocal cells. According to the transfer function model of the imaging system, the advantages of shift invariance and capability of multidirectional resolution of the translation invariant wavelet are fully utilized, aliasing items are considered into the image restoration model, and noise and fuzz are used as the factors for causing image deterioration, thereby achieving the restoration results of removing aliasing in frequency domain and removing white noise and fuzz in a time-frequency domain. in the method, the quality of the restored image is greatly enhanced, image repetition feature is perfect and the image restoration efficiency is enhanced.

The invention relates to a sealing device of turbine pressurizing compressor, which comprises a middle case, a sealing ring base, a retaining oil spray disc, a retaining bearing, and an oil baffle plate between the retaining oil spray disc and the middle case. Wherein, the oil baffle plate, the middle case and the retaining bearing can form a stable sealing chamber; the oil baffle plate is mounted at the inclined surface of annular heave to limit the flowing shape of machine oil with resisting and dividing the machine oil; the case of retaining oil spray disc that connecting the oil container has a annular heave whose inner and outer sides have inclined surface to change the flowing direction; the sealing ring base has a guide groove; the guide groove and the retaining oil spray disc form a guide channel to guide the machine oil leaked from the movable sealing gap between the oil baffle plate and the retaining oil spray disc into the oil reflux cut of middle case. The invention can effectively reduce the oil leakage with wider market prospect.

The invention discloses a SBS effect suppressing device in the amplifier stage of a high-power narrow-linewidth fiber laser with MOPA structure, including a pump source, a coupling device and a gain fiber, and the pump source is coupled into the gain fiber through coupling devices at different positions of the gain fiber , that is, spatial multipoint pumping. Changes in the number and spatial distribution of pump sources will affect the spatial distribution of the number of inversion particles in the gain medium, which will further affect the amplification process of the signal light and SBS scattered light of the amplifier. By rationally designing the position and power of the pumping point, the efficiency of the amplifier can be guaranteed. At the same time, the amplification of SBS scattered light is weakened, the SBS effect of the amplifier is effectively suppressed, and the output power of the narrow linewidth fiber laser is increased.

The invention provides an insulated anode cathode arc thruster with an auxiliary floating potential electrode, comprising a cathode (1), an auxiliary floating potential electrode (2), an insulating sleeve (3), an insulating anode (4) and an anode insulating layer (5 ); the insulating anode (4) is set on the insulating sleeve (3), and the surface of the insulating anode (4) is wrapped by the anode insulating layer (5); the insulating sleeve (3) is set on the cathode (1), and the cathode The surface of (1) is in close contact with the inner wall of the insulating sleeve (3); the auxiliary floating potential electrode (2) is located inside the insulating sleeve (3), and is in close contact with the inner wall of the insulating sleeve (3), increasing the The cathode current amplitude, the density of the plasma source is high, and the plasma source forms a directional jet, which improves the efficiency of the cathode arc thruster. The invention reduces the radial divergence of the jet plasma without affecting the plasma generation , so that more plasma is directional ejected along the insulating sleeve (3) to form a thrust, which greatly improves the propulsion capability of the cathode arc thruster.

The invention relates to a copolymerized polymer chelating flocculant and a preparation method thereof. It uses polyethylene polyamine and piperazine as raw materials, and introduces polyethylene polyamine containing active amino groups and piperazine ring with rigid structure into the polymer chain through epichlorohydrin under mild conditions , and then react with carbon disulfide and sodium hydroxide to insert the strong chelating group dithioformate into the molecular chain. The present invention introduces a rigid piperazine ring structure into the polymer chain, which effectively changes the molecular chain structure and the spatial distribution of the chelating group, thereby facilitating the coordination of the chelating group and the heavy metal ion, as well as the formation and The growth makes the flocs produced dense and coarse, which improves the chelation and flocculation ability of heavy metals and the separation performance of flocs. The method of the invention has simple technological process, mild technological control conditions, and is easy to control and realize; and the whole technological process is environmentally friendly, and has good popularization and application value.

The invention relates to a fuel classification device, an engine combustion chamber and an aero-engine, wherein the fuel classification device comprises: a pre-combustion stage, which is provided with a pre-combustion stage oil passage (2) for supplying fuel to the flame tube; and a main combustion stage stage, with at least two main fuel oil circuits for supplying oil to the flame tube; wherein, when the engine is working in the first state, the pre-combustion stage oil circuit (2) and each main fuel stage oil circuit are open Fuel supply: when oscillating combustion occurs in the first state, the fuel supply ratio of each main fuel stage oil circuit is adjusted while keeping the total fuel supply volume of each main fuel stage oil circuit unchanged. This kind of fuel oil classification device can make the local combustion in the flame tube occur under the rich fuel condition by separately adjusting the fuel oil distribution ratio inside the main combustion stage, so as to avoid oscillation combustion; at the same time, it can make the fuel space distribution in the flame tube more uniform It is beneficial to control the discharge level, so as to maintain a good outlet temperature distribution quality.

The invention discloses a core rotor device of an exhaust gas turbocharger, which comprises an intermediate shell, a thrust sleeve, a thrust bearing, an oil baffle, and a shaft seal. It has a chamber, and a sealing ring seat is arranged in the chamber, and the sealing ring seat includes a ring member sealed with the inner wall of the chamber, and a ring for dynamic sealing with the shaft seal arranged on the turbine shaft, the ring member, the sleeve The rings are fixedly connected with a ring-shaped connecting piece, and the side of the ring-shaped connecting piece facing the impeller has an arc-shaped end face corresponding to the shape of the impeller. The original connecting disc and the middle shell are changed into the middle shell and the sealing ring sleeve. The larger connecting plate is canceled to avoid product deformation, the original convex seal is changed to groove seal, the oil return space of the product is increased, and the screw compression is changed to the elastic retaining ring compression. The above measures The assembly is convenient, the automatic assembly line is easy to adopt, and the product cost is reduced.

The invention discloses an upper movable arm for a working device of a multifunctional demolition robot and a processing method thereof. The box structure of the upper movable arm includes a U-shaped plate and a bottom plate, the opening of the U-shaped plate is downward, and the two side ends It is welded with the bottom plate to form the box structure of the upper boom, the two ends of the box structure of the upper boom are welded with baffle plates, the side surface of the U-shaped plate is welded with a reinforcement plate, and the outer surface of the reinforcement plate is welded with a fork plate, and the fork plate is simultaneously connected with the Baffle welding. The profile structure of the upper boom of the invention is easy to be welded and formed, the processing technology is simple, the stress concentration is reduced, and the side plate of the upper boom will not be cracked due to the stress concentration. The deformation of the upper boom after welding is small, and its strength and rigidity are strengthened.

The invention discloses a touch screen, a touch screen manufacturing method and a display device. Positioning sensitivity of touch points of the touch screen can be improved. The touch screen comprises a substrate, a plurality of first electrode assemblies, a plurality of second electrode assemblies and an insulating sealed cavity, the first electrode assemblies are positioned on the substrate and distributed along a first direction and comprise first electrodes and second electrodes arranged on different layers, the second electrode assemblies are positioned on the substrate and distributed along a second direction intersected with the first direction and comprise third electrodes and fourth electrodes, a hollow stereoscopic area is enclosed by the first electrodes, the second electrodes, the third electrodes and the fourth electrodes at the intersections of the first electrode assemblies and the second electrode assemblies, and the cavity is positioned in the hollow stereoscopic area and contain magnetic materials.

The invention discloses a front case assembly, a TV set and an assembling method thereof. The supporting frame includes a supporting bottom plate, a supporting side plate and a supporting top plate, the supporting top plate is vertically connected to one side of the supporting side plate, and the supporting The bottom plate and the supporting side plate are connected to the side away from the supporting top plate, the supporting bottom plate and the supporting top plate are located on the same side of the supporting side plate, the supporting bottom plate is used to connect the middle shell assembly, and the supporting top plate is used for In connection with the rear case assembly, the supporting bottom plate is used for placing each preset component, so that a preset accommodating space is formed inside the front case assembly for placing each preset component in the TV set. By changing the overall structure of the front case assembly, the present invention changes the positional relationship between the front case assembly and each preset part in the TV, and changes the spatial distribution of each preset part, so that the front case assembly reduces the number of times when the TV is assembled. The overall thickness of the TV can realize the wall hanging of the TV.

The invention belongs to the field of micro-total analysis system, fluid micro-mixing and related fields, and relates to a passive convergent-divergent micro-mixer for low diffusion coefficient fluid. The micro-mixer consists of a fluid inlet channel, a fluid mixing channel, and a fluid outlet channel Composition, and repeated polygonal structural units in the fluid mixing channel, the polygonal structural units are staggered to form a convergent-divergent cavity structure between the toothed sides of the polygonal structural unit and a mixing chamber at the top of the polygonal structural unit body structure. The convergent-divergent cavity structure induces the fluid to undergo periodic changes, forming a convergent-divergent flow change. Through the convergent-divergent effect and the sharp angle effect of the mixing cavity structure, the fluid is induced to produce multiple mechanisms other than the diffusion mechanism in the mixing cavity. a mixing mechanism. The invention can realize rapid and efficient mixing between fluids with low diffusion coefficients in a wide range of Reynolds numbers.

The invention discloses a neutron ghost imager, comprising: a neutron source, used to generate a neutron beam; a magnet structure, arranged toward the emission direction of the neutron beam, used for space modulation of the neutron beam, and the modulated The final neutron beam is irradiated to the surface of the object to be imaged; at least one neutron sensor is arranged in parallel with the object to be imaged, and is used to receive the neutron beam passing through the object to be imaged; the imaging device is connected to the magnet structure and the neutron sensor respectively, It is used to reconstruct the object to be imaged according to the received neutron beam and the distribution function of the magnetic polarization direction of the neutron beam irradiation place in the magnet structure, or according to the received neutron beam and the magnetic polarization direction of the neutron beam after space modulation The distribution function reconstructs the object to be imaged. It only needs one or more neutron sensors, does not need to focus and image neutron beams, and can achieve the purpose of the invention without neutron sensor arrays, and has simple structure, small size and low cost.