38results about How to "Offset negative effects" patented technology

The invention discloses a cascaded GHZ state code based quantum gate construction method of logic quantum bits. The method comprises the steps that coded logic quantum bits based on cascaded GHZ statecodes serve as input, each coded logic quantum bit is formed by multiplying N cascaded logic quantum bits represented in the GHZ state, and each logic quantum bit represented in the GHZ state is formed by m physical quantum bits; a quantum bit gate composed of a bit flipping gate, a phase flipping gate and a control NOT gate is constructed, and bit flipping, phase flipping and control NOT operation are carried out on each input coded logic quantum bit; and coded logic quantum bits after different operations are obtained in the output end. Via the method of the invention, operations related tothe cascaded GHZ state code based coded logic quantum bits can be realized, the method is realized via basic logic gates, the method has an anti-interference capability as to certain error models, and negative influence caused by photon loss can be offset to certain extent.

The invention discloses a method for suppressing the peak-to-average ratio of orthogonal frequency division multiplexing (OFDM) signals. The method includes the following steps that: (1) inputted serial data signals are converted into parallel signals at a signal transmitting end, so that a parallel signal sequence can be obtained; (2) the obtained parallel signal sequence is multiplied by a constructed precoding matrix, so that a peak-to-average ratio-suppressed precoded signals can be obtained; (3) a cyclic prefix is added to the precoded signals, companding processing is performed through using a segmented exponential companding function, so that the peak-to-average ratio of the companded signals can be further suppressed; and (4) parallel-to-serial conversion is performed on the companded signal sequence at the signal transmitting end, so that orthogonal frequency division multiplexing (OFDM) transmission signals can be obtained. The method of the invention is low in complexity, can significantly reduce the signal-to-average ratio of the signals without decreasing the bit error rate of the received signals, and can improve the performance of a communication system.

The invention discloses a concrete internal curing agent, a preparation method and applications thereof, and belongs to the field of chemical synthesis. The preparation method comprises: 1) dispersingtwo emulsifiers in a dispersion medium at a room temperature to form an oil phase system, adjusting the neutralization degree of an anionic monomer aqueous solution, mixing the neutralized anionic monomer aqueous solution and a nonionic monomer aqueous solution, and adding a cross-linking agent and an initiator to form a water phase system; 2) under the protection of an inert gas, adding the water phase system into the oil phase system, and carrying out a reaction until a gel appears; and 3) taking the gel, washing, and drying to obtain the white powdery concrete internal curing agent. According to the invention, the concrete internal curing agent obtained by the preparation method is moderate in water absorption rate, integrates hydrophilic and alkali-resistant groups, ensures the moisture required by later hydration of cement, and reduces the negative influence on the strength of concrete after water release based on small particle size.

The invention relates to the field of exploration and development of petroleum and gas, and provides a technique for purifying, liquefying and re-injecting oilfield CO2 flooding produced gas. According to the technical point, a method of supercharging by a multi-stage compressor and cooling by five-stage heat exchange is adopted, and the purpose of separating and liquefying the produced gas is achieved. The technique comprises the following process steps: supercharging the pretreated oilfield CO2 flooding produced gas by using a multi-stage compressor unit so as to reduce liquefying temperature of gas; and liquefying CO2 in a five-stage heat exchange cooling mode while the produced gas is separated. The technique has the advantages that for the high-CO2-content produced gas, the liquefying temperature of the gas can be reduced gradually along with rising of pressure in a certain range; and under the same pressure, the liquefying temperature of CO2 is higher than that of CH4 and N2. By the technique, while the produced gas is separated, purified and liquefied, injected liquid CO2 can be heated, energy is saved, and engineering cost is reduced.

The invention relates to a silicon micro-gyroscope Sigma Delta detection closed-loop control system structure and a parameter setting method thereof, belonging to the technical field of inertial MEMSsensor closed-loop control. According to the invention, an open-loop loop transfer function of Sigma Delta is established by determining a zero point, a pole and an open-loop gain of a quantization noise transfer function; then pole-zero cancellation is realized by embedding a lead-lag compensator in the Sigma Delta loop and setting the pole of the compensator to be equal to the zero point of a meter module; the pole of the compensator is set to be equal to the real zero point of the open-loop loop transfer function; and other control parameters of the Sigma Delta are determined by a undetermined coefficient method; therefore, the structural design and parameter setting of the silicon micro-gyroscope Sigma Delta detection closed-loop control system are realized. According to the invention,through adding the lead-lag compensator to the loop structure and the method of pole-zero cancellation, the negative effect of the meter zero point on the modulator quantization noise shaping is offset, the high signal-to-noise detection of an angular rate signal is ensured, and the pure digital output of the silicon micro-gyroscope is realized at the same time.

The invention relates to a hot-melt pressure-sensitive adhesive for a breathable film and a preparation method of the hot-melt pressure-sensitive adhesive. The hot-melt pressure-sensitive adhesive isprepared from the following raw materials in parts by weight: 20-45 parts of a thermoplastic elastomer, 8-20 parts of toughened epoxy resin, 20-35 parts of tackifying resin, 0.5-5 parts of functionalized modified graphene, 0.1-1 part of an antioxidant and 1-5 parts of a cross-linking agent. The preparation process is simple in steps and good in controllability, and the prepared hot-melt pressure-sensitive adhesive is good in temperature resistance, has stable cohesiveness with polyethylene materials, is high in initial adhesion and good in permanent adhesion, and has a very good application prospect.

The drive belt (1) comprises at least one continuous belt and a plurality of intersecting elements (30) having transversely curved saddle surfaces (31) of saddle radius (Rs) to align with the direction of the continuous belt. Inwardly oriented major face interaction; saddle surface (31) connected to concave concave by first convexly curved transition surface portion (35) at first lateral side adjacent cross member (30) columnar portion (33) into the surface section (34). The transmission belt (1) also has the following characteristics: the transverse width (W) of the continuous belt is greater than the transverse width of the saddle surface; the saddle radius (Rs) remains substantially constant over the entire transverse width of the saddle surface (31); the saddle radius (Rs) is smaller than the so-called ribbon radius (Rb) of the transversely curved portion of the ribbon in its unloaded state, regardless of the amount of bending in the longitudinal direction of the ribbon; and the first transition surface portion forms a relatively sharp edges.

The invention discloses an insulating fire-extinguishing agent for a high-temperature oil fire of a transformer and an application method thereof. The insulating fire-extinguishing agent comprises thefollowing components: 0.5% to 10% by weight of a strong-expansion surface covering agent, 0.5 to 30% by weight of an anti-high-temperature evaporant, 5% to 50% by weight of an oil-in-water aqua anti-reburning agent, and 15 to 50% by weight of water. In use, the fire-extinguishing agent is mixed with water according to a mixing ratio of 0.1% to 6%; and water mist with droplet diameter in a range of 300-900 [mu]m and droplet flow rate of 1.0 to 3.0 L/m<2>.min is used for outdoor wind-resistant electriferous fire extinguishing. The insulating fire-extinguishing agent of the invention has the characteristics that the agent can effectively go deep into the high-temperature oil fire for fire extinguishing, is capable of rapidly spreading to cut off oxygen so as to realize fire extinguishing, and forms an anti-reburning barrier layer which realizes coating of transformer oil with fire-extinguishing water aqua; and the insulating fire-extinguishing agent effectively extinguishes the oil fireof the transformer and can prevent re-burning. When the insulating fire-extinguishing agent is to be used, an appropriate droplet diameter and an appropriate droplet flow rate are adopted so as to achieve wind-resistant and electriferous fire extinguishing of outdoor transformers and protect the transformers from fires.

The invention provides a routing network and a node transmitting capacity sharing method thereof. The routing network comprises a plurality of deflection routing nodes which are mutually connected. A cloud path is stored in each deflection routing node, the length of each cloud path does not exceed a preset threshold, and each cloud path corresponds to a unique input port of the corresponding deflection routing node. Each deflection routing node is used for conducting routing processing on a current deflection data stream when idle routing resources exist locally, and blocking the current deflection stream or directly transmitting the current deflection data stream to a next-hop node in the corresponding cloud path according to the fact that whether the deflection routing node is a tail node of the cloud path where the current deflection data stream belongs or not when no idle routing resources exist locally. The routing network and the node transmitting capacity sharing method of the routing network can avoid the livelock phenomenon on the premise of supporting node transmitting capacity sharing, and shorten data time delay.

The invention provides an electric vehicle short magnetic circuit rare earth-free permanent magnet motor, and belongs to the technical field of automobile motors. the motor comprises a convex lens-shaped iron core, a non-magnetically conductive rotor iron core, a stator iron core, an excitation winding, an armature winding, a screw, a tablet and a shaft, wherein the stator iron core has 12 statorpoles of equal width on the inner side thereof; The non-magnetic conductive rotor core is located on the inner side of the stator core and fixed on the shaft; The non-permeable rotor core has seven circular arc grooves. A convex lens-shaped iron core capable of conducting magnetic field is embedded in the circular arc-shaped groove, and the excitation winding and the armature winding are all centralized short-moment windings; an excitation winding is wound on every other stator pole of the stator iron core, and the armature winding is wound on the other stator poles. The technology of the invention is a short magnetic circuit motor, and the iron loss is small under the same magnetic density; the rare earth permanent magnet material is not used to save rare earth resources.

The invention discloses a three-dimensional sucker. The three-dimensional sucker comprises a sucker body, wherein a cavity with a round cross section is arranged in the sucker body and is provided with a sealed end surface and an opening end surface, a tangential spraying nozzle connected with a compressed air source is arranged on a wall surface of the cavity, a big-end-down hollow circular truncated cone is arranged on the opening end surface of the cavity, and the upper end opening of the hollow circular truncated cone and the opening of the opening end surface of the cavity coincide; a spiral groove is formed in the inner side surface of the hollow circular truncated cone and forms a fixed exhaust passage, and the spiral groove is communicated with the internal cavity and the peripheral environment. The three-dimensional sucker can adsorb a three-dimensional object, and the spiral groove suppresses influences of an irregular shape of the surface of the object on air exhausting. Meanwhile, when the air is exhausted along the spiral groove, the circumferential speed component can be kept to the maximum extent.

The invention discloses a lead storage battery positive electrode plate taking 4BS-graphene as an additive and a preparation method of the positive electrode plate. The positive electrode plate comprises the raw materials of lead powder, 4BS, graphene, acetylene black and red lead; and the positive electrode plate has the main components of <beta>-PbO<2>, <alpha>-PbO<2> and graphene. According tothe lead storage battery positive electrode plate taking 4BS-graphene as the additive and the preparation method of the positive electrode plate, a seed crystal effect is played in positive electrodecuring by virtue of addition of 4BS, the size and uniform distribution degree of 4BS in the unprocessed positive electrode plate can be optimized, the relative contents and structures of the <alpha>-PbO<2> and <beta>-PbO<2> in the finished electrode plate can be adjusted, and beneficial influences to the performance, particularly prolonging of the service life, of the positive electrode of the lead acid battery can be realized; by adding graphene to the electrode material, the conductive performance of the electrode can be improved effectively, the deep layer active materials with the electrode micropore structure can be fully utilized, the discharge capacity is increased, and negative effects of relatively high content of <alpha>-PbO<2> in the positive electrode finished electrode plate to the positive electrode capacity caused by taking 4BS as the additive can be counteracted.

The invention discloses a flexible electric actuator based on a sprayed non-metal electrode and a preparation method of the flexible electric actuator. The ionic polymer intermediate layer is prepared by dissolving TPU colloidal particles in a DMF solution, uniformly mixing the TPU colloidal particles with an ionic liquid according to a certain proportion, dripping the mixture on the surface of a specific glass container, and drying the mixture at a specific temperature program; the upper surface and the lower surface of the ionic polymer middle layer are respectively covered with a non-metal electrode layer through an ultrasonic spraying process; the non-metal electrode layer precursor solution is formed by uniformly mixing a non-metal conductive polymer material, a carbon nanotube, dimethyl sulfoxide, ethanol and ionic liquid according to a certain proportion, the electrode layer precursor solution is attached to the upper and lower surfaces of the ionic polymer intermediate layer through an ultrasonic spraying process, and the spraying process is continuously heated by a heating stage. According to the invention, not only can large-scale preparation and self-defined patterning be conveniently carried out at low cost, but also the actuating speed of the device can be well guaranteed.

The present disclosure provides an electromagnetic actuator (30) that drives an armature (33) by an electromagnetic force. The electromagnetic actuator (30) includes a stator (82), a coil (81), and aninsulator (84). The stator (82) is formed of a magnetic material and has a cylindrical portion. The coil (81) is disposed outside of the stator (82). The coil (81) generates a magnetic field when being energized. The insulator (84) is disposed in a particular region of the stator (82) facing the coil (81) in a radial direction. The insulator (84) extends partially along the stator (82) in a circumferential direction and suppresses a current flowing through the stator (82) in the circumferential direction. The stator (82) is continuously formed entirely along the circumferential direction by the magnetic material.