91results about How to "Improve low efficiency" patented technology

The present invention relates to a method and device for extraction of a rod-shaped ground object. The method comprises: obtaining three-dimensional laser point cloud data, and removing low spatial points in the three-dimensional laser point cloud data to obtain a candidate point cloud set; dividing the candidate point cloud set to obtain an independent point cloud set corresponding to an independent ground object; identifying the rod-shaped ground object point cloud set in the independent point cloud set according to the projection of the independent point cloud set on a horizontal plane; and performing line extraction of the rod-shaped ground object point cloud set, and obtaining the upper and lower end points of the rod-shaped ground object according to the extracted elevation of the rod-shaped ground object point cloud on a straight line so as to effectively ensure the precision of the extracted rod-shaped ground object and satisfy the requirement of a high-precision map.

The invention provides a high-titanium type petroleum fracturing propping agent, whose chemical constituents comprise (by weight ratio) 5-45% of high-titanium blast furnace slag, 10-30% of high-alumina brick, 17-77% of bauxite, and 4-8% of composite agglutinant, its preparation process comprises the following steps, (1) grinding the raw material, making mother balls with an atomizing granulation system, charging the mother balls into a sugar-coating machine, squeezing and dressing so as to obtain blank pellets, (2) drying the blank pellets through a drying system, loading into high temperature kiln for agglutination, (3) cooling down and carrying out surface polishing through high speed rotation in a friction tube, (4) elevating the temperature to 80-100 deg. C, carrying out surface treatment with acid-resisting organics, finally cold-setting.

The invention relates to a proportional-control high-precision propelling hydraulic system for an earth pressure balance shield tunneling machine and a control method. The proportional-control high-precision propelling hydraulic system for the earth pressure balance shield tunneling machine comprises a PLC, a variable pump, an overflow valve, a proportional pressure reducing valve, a first one-way valve, a second one-way valve, a first hydraulic-control one-way valve, a second hydraulic-control one-way valve, a two-position and three-way electromagnetic reversing valve, a three-position and four-way electromagnetic reversing valve, a displacement sensor, an execution mechanism, and a pressure sensor. The proportional pressure reducing valve and the variable pump are used for controlling the pressure and flow of the system, and closed-loop control is formed by the proportional pressure reducing valve, the variable pump and the pressures sensor and the displacement sensor of the execution mechanism, so that the speed and pressure control precision of the system is improved, the shield tunneling machine can make axial movement and accurately achieve synchronous movement according to a specific route track during tunneling construction, and the problem of low efficiency of a hydraulic system can be solved.

The invention relates to an ARMS fluorescent quantitative PCR-based gene mutation kit and a method thereof. Compared with present gene polymorphism detection kits and methods thereof, the enhanced ARMS fluorescent quantitative PCR-based gene polymorphism mutation kit and the method thereof have the advantages of strong specificity, high sensitivity, low cost, highly reliable result, low background, easy determination of the result, ascendant operation and use, fast and convenient fluorescent quantitative PCR, closed tube detection in the whole course, pollution reduction, and reduction of the unnecessary cost and workload. The fluorescent quantitative PCR can realize the characterization of the amplification efficiency by using a CT value, so the method can realize the detection of the nuclear gene polymorphism heterozygote genotype conditions, and makes the result accurately and reliably determined.

The invention relates to an attack link based website backdoor use event identifying method. Background logs are analyzed. If attack behaviors are determined, normal access log data is abandoned and logs relating to the attack behaviors are kept. At the same time, the attack behaviors are identified and the attack types are classified and combined. Latitudes of IPs carried by the attack behaviorsand the attack types are acquired. The attack behaviors are divided into a plurality of phases. If the attack behaviors include at least three phases, whether the attack behaviors contain website backdoor access behaviors or not is detected. If the attack behaviors include at least three phases and the attack behaviors contain website backdoor access behaviors, website intrusion success is judgedand identification on the website backdoor use event and the server intrusion is implemented. According to the invention, judgment is made on influence caused by attack and complete intrusion analysisis formed. Attack behaviors from different sources are confirmed and classified and the original attack behavior validness is ensured. Further mining and attack chain analysis are performed, attack analysis difficulty is reduced and attack analysis efficiency is improved. Abnormal intrusion can be found quickly and safety response capability is improved.

A hybrid type outdoor motor includes a propeller, an electric motor that generates a drive force to rotate the propeller, and an engine that generates a drive force to rotate the propeller. The engine discharges exhaust gas in water. A control apparatus that controls the hybrid type outboard motor includes a speed instruction unit arranged to generate a speed instruction value indicative of the rotational speed of the propeller, and a control unit arranged to change from a first mode, in which only the drive force of the electric motor is transmitted to the propeller, to the second mode, in which the drive force of the engine is transmitted to the propeller. The control unit changes from the first to second modes depending on a rotation direction of the propeller and the speed instruction value generated by the speed instruction unit.

The invention provides a preparation method for preparing a uniform-nature horizontal array for an overlong single-wall carbon nano-tube by utilizing a stable airflow and a reaction device and relates to the field of nano-material research. The preparation method comprises the following steps: reducing a catalyst precursor in a reducing atmosphere into a catalyst with an activity and then quickly reducing the temperature to non-reaction temperature; placing both a second substrate and a first substrate loaded with the catalyst with the activity into a stable laminar flow atmosphere with a carbon source; quickly increasing the temperature to the growth temperature and reacting, thus obtaining the horizontal array for the overlong single-wall carbon nano-tube. The reaction device at least comprises a reaction chamber and a heating device. The reaction chamber can quickly increase temperature and reduce temperature so as to meet the temperature requirement required by the reaction. The method and the device provided by the invention can guarantee the aligned parallel array of the acquired overlong single-wall carbon nano-tube in stable laminar flow and can effectively controllable prepare the horizontal array for the overlong single-wall carbon nano-tube with flawless surface, uniform nature, high collimation, high parallel property and high density.

The invention relates to a bipolar plate for a fuel cell. The bipolar plate for the fuel cell comprises a first polar plate and a second polar plate, wherein the first polar plate is an anode hydrogen guide flow field plate; the second polar plate is a cathode air guide flow field plate; a cooling fluid guide interlayer is formed between the first polar plate and the second polar plate; a plurality of raised guide channels adjacent to a branch pipe are arranged in a fluid inlet and outlet region of the first polar plate; the plurality of raised guide channels are arranged at intervals; a compressive connection plate is formed between every two adjacent guide channels; fluid inlet and outlet are formed in one end of each guide channel; a closed end is arranged at the other end of each guide channel; the fluid inflows from the fluid inlet and outlet of each guide channel and inflows from a hollow cavity formed between the compressive connection plate and the second polar plate; and the longitudinal sections defined by the fluid inlets and outlets of the plurality of guide channels are vertical to the flow direction of the fluid. According to the bipolar plate structure for the fuel cell provided by the invention, the problem of water and gas plugging caused by closing of a master pipe orifice of the flow field plates due to uneven stress on the fuel cell in the assembly process can be effectively solved.

A marine vessel running controlling apparatus includes a steering angle acquiring unit which acquires the steering angle of a steering mechanism provided in a marine vessel, and a control unit which controls a lift force difference generating unit for generating a lift force difference between a port side and a starboard side of the marine vessel according to the steering angle acquired by the steering angle acquiring unit. The control unit may control the lift force difference generating unit to increase the heel angle of the marine vessel in a direction defined by the steering angle, if the steering angle falls outside a neutral range.

The embodiment of the invention provides a voice endpoint detection method and device. Voice signal frames to be detected are received and the feature vectors of the voice signal frames are acquired; the optimal arrival path of the voice signal frames in a phoneme acoustic model trained in advance is acquired according to the feature vectors; and when non-mute signal frames are detected according to the optimal arrival path and existence of the preset number of mute signal frames before the non-mute signal frames is judged, the non-mute signal frames are judged to be voice endpoints. Low-complexity and high-efficiency voice endpoint detection is realized.

The invention relates to an impeller optimized design method capable of prolonging running down time of a reactor coolant pump. According to the impeller optimized design method, firstly, a main objective function for improving running efficiency under a running down working condition by optimizing main parameters of an impeller is established; then the main parameters are divided into three groups which are taken as design variables respectively, three subordinate objective functions are optimized respectively with a complex method for running down efficiency under initial constraint conditions, and the optimum points, guaranteeing the highest efficiency, of main geometric parameters of the impeller are obtained respectively; and a new constraint is determined in a small range nearby the optimum points, optimized solution is performed on the main objective function under the reduced new constraint with a feasible direction method, and the final optimized result is obtained. By means of design of the impeller of the reactor coolant pump, the problem of lower running down efficiency of the impeller can be improved, the running down time is prolonged, and the nuclear safety is improved. Meanwhile, with innovative application of the step-by-step optimization design method adopting constraint range reduction for subordinate objectives and optimum point searching for the main objective, the optimization speed is increased, and the effectiveness of the optimized result is guaranteed.

A marine vessel running controlling apparatus includes a steering angle acquiring unit which acquires the steering angle of a steering mechanism provided in a marine vessel, and a control unit which controls a lift force difference generating unit for generating a lift force difference between a port side and a starboard side of the marine vessel according to the steering angle acquired by the steering angle acquiring unit. The control unit may control the lift force difference generating unit to increase the heel angle of the marine vessel in a direction defined by the steering angle, if the steering angle falls outside a neutral range.

The invention discloses a method for preparing macromolecule PTC heat sensitive material by utilizing an extrusion laminating method, which comprises the following steps: (1) master batch of the PTC heat sensitive material is prepared as a matter of routine; (2) by adopting the extrusion laminating method, the master batch obtained in step (1) is laminated with metal foil at an extrusion die head by molten resin; (3) the composite membrane obtained in step (2) is cooled on a quenching roller and then wrapped up and parted off to form a semi-manufactured membrane; (4) the composite membrane obtained in step (3) is crosslinked by irradiation. The macromolecule PTC heat sensitive material, prepared by adopting the extrusion laminating method of the invention, is applicable to mechanized production and has low cost and high efficiency. The prepared macromolecule PTC heat sensitive material increases the composite forces of metal electrodes and macromolecule matrixes and can be wrapped up. Furthermore, products can be produced into small ones.

The invention discloses a method for efficiently and rapidly preparing free astaxanthin. The strain for producing lipase and esterase is pseudomonas aeruginosa. Conditions such as the pH, the ratio ofa reaction solution, the temperature, the enzyme addition amount and time are determined. There is no need to add any acid or alkali in a reaction process of the technology, not only is the shortcoming that byproducts including astacin and semi-astacin are easily generated in the process of preparing the astaxanthin by means of a traditional saponification method overcome, but also the problems that the efficiency of preparing the astaxanthin by means of a single enzymolysis method is low and the cost is high are solved, and a novel approach is provided for environment-friendly scale production of the natural free astaxanthin.

A vessel and a method for driving a vessel. The vessel is provided with a pod arranged at the rear side thereof which is arranged rotatably with respect to the vessel. Rotation is effected about an axis which deviates slightly from the vertical. The axis of the propeller shaft forms an angle which is smaller than 90° with the axis of rotation of the pod. As a result of this combined positioning of the rotation shaft of the pod and the positioning of the propeller shaft, the axis of the propeller shaft with respect to the horizontal will vary when the pod is rotated depending on the rotation position of the pod. This permits optimum adaptation to the various operating conditions of the propeller position.

The invention provides a method and device for improving the efficiency of an LINC transmitter and belongs to the technical field of wireless communication. The method for improving the efficiency of the LINC transmitter comprises the flowing steps that (1) multi-threshold signal separation and phase modulation are carried out on baseband signals, and the baseband signals are converted into two paths of constant amplitude phase modulation signals; (2) the two paths of constant amplitude phase modulation signals obtained after signal separation and phase modulation are carried out enter a multipath Dherty power amplifier to carry out signal amplification, then an isolation synthesizer is used as a power synthesis module, and the two paths of amplified constant amplitude phase modulation signals are synthesized into one path of signals through the isolation synthesizer. According to the method and device for improving the efficiency of the LINC transmitter, due to the fact that multi-threshold signal constant amplitude separation is carried out, the out-phase angle is small, the power consumed by the synthesizer is lowered, the efficiency of the isolation synthesizer is improved, and the defect that the linearity is poor when a non-isolation synthesizer is adopted; it can be guaranteed that the LINC transmitter has high linearity, and the problem that an existing LINC transmitter is lower in efficiency is solved.

The invention discloses a staggered winding-arranged 24-pulse wave magnetic integrated rectification transformer. The staggered winding-arranged 24-pulse wave magnetic integrated rectification transformer comprises three sets of primary winding assemblies, three sets of secondary winding assemblies and a set of conjugation iron core, wherein the conjugation iron core comprises three vertical ironcore posts, an upper iron yoke and a lower iron yoke, the three vertical iron core posts are arranged at equal distance, the upper iron yoke is vertically connected with each vertical iron core post and is arranged above each vertical iron core post, and the lower iron yoke is vertically connected with each vertical iron core post and is arranged below each vertical iron core post. The staggered winding-arranged 24-pulse wave magnetic integrated rectification transformer has the technical characteristics that the electric energy quality is improved, unfavorable influence of a ring current on avariable-current transformer is prevented, the transformer is applicable to a limited ship space and the total volume of the rectification equipment is reduced; meanwhile, compared with a traditional24-pulse wave variable-current transformer, the transformer has the advantages that the whole set of iron core equipment can be saved, and the cost is greatly reduced; by arranging secondary windingsin a staggered way, the defect of industrial complexity of a traditional single 24-pulse wave variable-current transformer can be effectively overcome, a set of manufacturing die is saved, the industrial manufacturing process is simplified, and the cost is reduced.

The invention provides a data processing method and device, network equipment and a computer readable storage medium. The method comprises the following steps: acquiring a data packet acquired by a vector data packet processing development framework VPP from a network card of network equipment; caching the data packet in a first cache queue corresponding to the type of the data packet; reading the data packet from the first cache queue according to a preset rule, and determining a protocol type corresponding to the data packet; and analyzing the data packet according to a preset processing function corresponding to the protocol type to obtain an analysis result of the data packet. Thus, in the process of acquiring and analyzing the data packet by the network equipment, the whole processing process is completed in the user space, the interruption frequency can be reduced, frequent switching of the user space and the kernel space for the processing thread of the data packet is not needed, and the data processing efficiency is improved.

The invention discloses a multifunctional joint sampling system for an atomic fluorescence spectrometer. The system comprises a peristaltic pump interruption sampling device, an injection pump sampling device, a shifter, a four-way hybrid reaction module, a solution storage device and a control system. According to the system, multiple sampling modes can be switched via the control system, multiple sampling modes can be considered simultaneously to a certain degree, and multiple sampling modes are integrated on one device simultaneously. Under the peristaltic pump interruption sampling mode, the injection pump part and three-way valve parts stop working, and peristaltic pump parts simultaneously absorb samples (or carrier liquid) and a reducing agent; under the injection pump sampling working mode, the injection pump part and the three-way valve parts are responsible for absorbing samples (or carrier liquid), and the peristaltic pump parts help to absorb the reducing agent, so that the cost is effectively lowered, and the efficiency is improved.

The invention is applicable to the field of material manufacturing and provides a spraying-free high-metal-gloss transparent ABS material and a preparation method. The spraying-free high-metal-gloss transparent ABS material consists of the following components: transparent ABS, mica powder, silver-dollar-type aluminum powder, antioxidant, lubricant, pigment and a coating agent. The problem of spraying-free color blending is solved and the scheme of blending of various colors is realized; the materials are transparent and the transparency range can be adjusted according to the needs; the problem that paint on a painted part easily falls off and is decolorized; since internal and external substrates are consistent, the repair rate and customer complaints are reduced; the surface hardness is improved and the anti-scratching performance is improved; the metal powder dispersibility, the anti-stacking performance and the anti-shearing performance are improved, and the gloss and consistency of the substrates are improved; the spraying process and production process are simplified, and the investment in factory buildings, coating lines and the like are reduced; the production cost can be greatly reduced and the efficiency can be greatly improved; the problems of complex process and high cost in recycling of painted parts are solved, and the new material is an environment-friendly material and can be directly recycled.

The invention discloses a supergravity regeneration energy-saving process of a flue gas CO2 capture system. The supergravity regeneration energy-saving process comprises steps S1-S7. A 'supergravity reactor + solution boiler + boiling liquid separator' coupling regeneration process of a chemical absorption method flue gas CO2 capture system is provided, an original 'desorption tower + boiler' regeneration process is replaced, the equipment size is greatly reduced, the process has the advantages of miniaturization, flexibility, high efficiency, small investment, skid-mounted equipment, modularization and the like, the investment cost is saved, and meanwhile, the regeneration energy consumption is obviously reduced. According to the flue gas CO2 capture system adopting the chemical absorption method, a 'supergravity reactor + solution boiler + boiling liquid separator' coupling regeneration process reduces agent loss and degradation deterioration of agents, improves the number of times of recycling of a chemical absorbent, conforms to the characteristics of low consumption, low emission and high efficiency of circular economy, and the purposes of recycling resources and reducing environmental pollution are achieved.

The invention provides a video subtitle processing method and device, electronic equipment and a readable storage medium, and relates to the technical field of video processing. The method comprises the steps of obtaining a target audio file corresponding to a video file; inputting the target audio file into an audio separation tool for obtaining human voice data from the target audio file; inputting the human voice data output by the audio separation tool into a voice recognition tool for determining a target caption text corresponding to the human voice data; and based on the relative time position of the human voice data in the target audio file, adding the target caption text corresponding to the human voice data into the video file corresponding to the relative time position to obtain a target video file. In the scheme, automatic generation and automatic addition of the video file subtitles can be realized, and the production efficiency of the video subtitles can be improved.

The invention discloses a molecular marker primer and method for identifying brown spotted flat head fishes and Indian flat head fishes. The nucleotide sequence of the primer is shown as SEQ ID No.1 and SEQ ID No.2. The identification method specifically includes the steps that DNAs of the brown spotted flat head fishes and DNAs of Indian flat head fishes are extracted, the DNAs of the two kinds of fishes are used as templates for PCR amplification, amplification results are purified and sequenced, and sequencing results are compared. The molecular marker primer and method have the advantagesthat the molecular marker primer is suitable for amplification of a PCR reaction and can effectively avoid non-specific amplification or decline of the amplification efficiency, increase the success rate of the PCR reaction and improve the accuracy and stability of identification results; the identification method is stable in result, high in repeatability and simple, the amplification results ofdifferent individuals are the same, and high consistency is achieved.

The invention relates to a tin-based lead-free solder and a preparing method thereof, the tin-based lead-free solder contains, based on weight percentage, 0.005-0.5% of gallium, 0.1-1% of silver, 0.1-1% of copper, 0.001-0.5% of phosphor and tin as the balance. The method for preparing the tin-based lead-free solder comprises the steps of: first of all, preparing four intermediate alloy ingots including tin-gallium, tin-silver, tin-copper and tin-phosphor; adding the four intermediate alloy ingots according to particular weight parts and then additionally adding the balancing tin; in the meantime, adding the mixture into a manganese alloy pot for melting, and heating up to 450 DEG C; discharging, cooling and casting into the lead-free solder so as to obtain the lead-free solder that contains gallium, silver, copper and phosphor with tin being the balance. The invention has the advantage that the lead-free solder is low in melting point, excellent in wettability, bright in soldering spot, persistent in anti-oxidation under high temperature operation and low in cost.

The invention discloses a water-cooled screw type cold water unit which comprises a water-cooled unit shell (1), an axial flow fan (2), a motor (3), a fin type heat exchanger (4), an electric controlcabinet (5), an expansion valve (6), a semi-closed screw type compressor (7), a gas-liquid separator (8), a low-pressure gas return pipe (9), a high-pressure exhaust pipe (10), a shell-and-tube heat exchanger (11), a chilled water inlet (12) and a chilled water outlet (13), wherein the axial flow fan (2) is arranged at the top of the water cooling unit shell (1), the axial flow fan (2) is arrangedat the top of the water cooling unit shell (1), the axial flow fan (2) is connected with the motor (3), the fin type heat exchanger (4) is arranged at the upper part of the shell of a water cooling unit, one side of the lower part of the water cooling unit shell (1) is provided with the electric control cabinet (5), and one side of the electric control cabinet (5) is provided with the semi-closedscrew type compressor (7), the gas-liquid separator (8) and the shell-and-tube heat exchanger (11), and the two ends of the semi-closed screw type compressor are connected with the finned heat exchanger (4) and the shell-and-tube heat exchanger (11) through the high-pressure exhaust pipe (10) and the low-pressure air return pipe (9) respectively. The water-cooled screw type cold water unit is adopted, so that the structure design is reasonable.

The invention is suitable for the technical field of communication, and provides an operation and maintenance monitoring connection establishing method and terminal equipment. The method comprises thesteps that the monitoring data transmitted by the equipment to be monitored are received, wherein the monitoring data include the identity marker of the equipment to be monitored; existence of the historical monitoring data corresponding to the identity marker is judged, and the first monitoring item of the equipment to be monitored is acquired from the monitoring data if there are no historicalmonitoring data corresponding to the identity marker; and operation and maintenance monitoring connection with the equipment to be monitored is established according to the identity marker and the first monitoring item. The operation and maintenance monitoring connection with the equipment to be monitored can be automatically established without manually creating the monitoring item so that the operation and maintenance monitoring establishing operation is simple and quick and high in efficiency.

The invention discloses a three-dimensional model file import control method and a client side. After a three-dimensional model file dragging instruction for dragging a three-dimensional model file into target three-dimensional software is received, a default task that a file to be imported is opened in the target three-dimensional software is not executed; but, a shortcut menu of the target three-dimensional software is displayed; and then, according to path information of the three-dimensional model file to be imported, the three-dimensional model file to be imported is imported by flexibly using function items in the shortcut menu according to current requirements. The three-dimensional model file dragging operation provided by the invention is not limited to open, namely single import processing; but, corresponding import processing can be executed by flexibly selecting the corresponding function items according to current requirements; for example, the corresponding import processing includes, but not limited to, a quote function item for executing quote import processing and an insertion function item for executing insertion import processing; therefore, the file dragging operation function can be enriched; operation of corresponding functions is simplified; and the user experience satisfaction is improved.

A connection-switched capacitor storage system comprises plural capacitors, parallel monitors connected with the capacitors, respectively, switches for switching the connections of the capacitors from a series combination to a parallel combination or vice versa, and a control portion. The parallel monitors bypass the charging current for the capacitors when the terminal voltages of the capacitors exceed a given voltage, thus limiting increases of the terminal voltages of initializing the terminal voltages of the capacitors to their original level. The control portion controls initialization and switching of the connections of the capacitors. The control portion causes the parallel monitors to initialize the capacitors near the voltage at which the connections of the capacitors are switched by the switches.