30results about How to "High actual value" patented technology

The invention relates the mineral separation process for low-grade collophane. The method comprises the following steps: carrying out dense-media dressing ore for low-grade collophane, getting the finished ore, then carrying out double reverse flotation, removing magnesium and silicon, and getting the phosphor concentrate. The method transforms the low-grade cellophane to high-grade concentrate, and recovery ratio is more than 80%, solving the problem that the low-grade cellophane is hard to utilize in industry.

The invention discloses a miniaturized frequency selection surface based on a double-opening resonance ring. A band-pass effect is formed through the combined action of the double-opening resonance ring and a middle coupling aperture. When electromagnetic wave is irradiated to the frequency selection surface, resonance is caused by the opening resonance ring. The frequency selection characteristicof the opening resonance ring is utilized, so that a high spatial filtering function is achieved, meanwhile, the miniaturization characteristic is realized; compared with a common frequency selectionsurface, the cell area is greatly reduced, and the size of the whole circuit unit is only 0.3lambda 0*0.3lambda 0; meanwhile, by virtue of mutual coupling between the opening gap of the resonance ring and an interlayer coupling window, a good out-of-band rejection effect is achieved; and a transmission zero point is arranged on each of the two sides of the band, so that the rectangular coefficient of the circuit is greatly improved. A symmetrical circuit structure is adopted, so that the structure is simple, and machining is easy; and meanwhile, the whole circuit is quite high in stability around the incident angle theta and a formula which is as shown in the specification, so that the practical value is increased.

The invention relates to a 500kV transformer substation relay protection system and a test system and a test method thereof. The 500kV transformer substation relay protection system comprises a plurality of SDH (Synchronous Digital Hierarchy) systems, wherein each SDH system comprises a relay protection device and an intelligent optical transmission device; 2M optical interface boards are configured on the intelligent optical transmission devices; the relay protection device and the intelligent optical transmission device of the same SDH system are connected with one 2M optical interface board through an access optical fiber; and the intelligent optical transmission devices of different SDH systems are connected through transmission optical fibers. The test system is built on the basis of the 500kV transformer substation relay protection system, and the test method is used for testing the transmission characteristic of a mainstream relay protection device to verify the validity and reliability of 2M optical interface equipment. The influence of a 2M optical interface channel on the relay protection service performance is tested through a plurality of experiment conditions, and the test system and the test method have great actual values for further testing and popularization of circuit performance.

The invention discloses a helicopter electric tail speed reducer test bench. An electric tail speed reducer comprises a motor and a speed reducer integrated together. The test bench comprises a radialloading device, an axial loading device, a torque loading device, a rotational speed measuring device, a lifting mechanism and a control device. The lifting mechanism drives a lifting frame to rise and fall. The radial loading device includes a radial loading bearing, a radial loading plate, a radial loading rod and a pressure sensor. The axial loading device comprises an axial loading bearing, and a fixed plate and a movable plate arranged on the left and right sides respectively. The torque loading device comprises a magnetic particle brake, wherein an input end of the magnetic particle brake is connected with a second measuring shaft, and a load torque is applied to the second measuring shaft through the magnetic particle brake. The rotational speed measuring device comprises a rotational speed measuring instrument, which measures the motor rotational speed of the electric tail reducer. The advantages of the invention are that the test bench can simulate real working conditions ofa helicopter electric tail reducer and test performance parameters of a motor.

The present invention discloses a method for optimizing discounted cash flow of project scheduling using ant colony algorithm. The method is used for solving resource constrained scheduling problem of discounted cash flow with multi-mode (MRCPSPDCF). Firstly, MRCPSPDCF model is built, the model considers overhead costs and a punishment mechanism besides ordinary cash inflow and outflow. Then a structural map is built for MRCPSPDCF model, accordingly, the scheduling problem is changed into a search problem based on diagram. Ant constructs solution of problems step by step with pheromone and heuristic information in structural map by using serial schedule generation system (SSGS). The algorithm comprehensive uses the pheromone and heuristic information based on time and cost to guide ant search. The algorithm can obtain better result when solving problem by comparison with existing other algorithm.

The invention belongs to the technical field of traditional Chinese medicines and discloses a traditional Chinese medicine orthopedic treatment fumigation device. The traditional Chinese medicine orthopedic treatment fumigation device solves the problem that the existing fumigation device for traditional Chinese medicine orthopedic treatment causes a loss of a large amount of steam in fumigation so that the fumigation effect is poor and energy loss is caused. The device comprises a fumigation box and a sealing frame, a through hole is formed in the outer wall of the top of the sealing frame, afixed frame is fixedly connected to the inner wall of the through hole, the fixed frame is fixedly connected to the inner wall of the fixed frame, and a circulating fan is fixedly connected to the outer wall of the fixed frame. According to the invention, the fixed frame, the circulating fan and the return pipe are arranged, when leg bone or hand bone fumigation treatment is carried out, liquid medicine steam generated by high-temperature heating orderly passes through the center point of the fumigation box through the circulating fan and then is guided into the fumigation box again through the return pipe, so that the overall fumigation treatment effect is improved, heat loss is reduced, and the actual value of the fumigation device is improved.

The invention provides an octagonal circular-section solid steel pipe concrete component. The octagonal circular-section solid steel pipe concrete component comprises a steel pipe, wherein the outer edge of the cross section of the steel pipe is octagonal; the inner edge of the cross section of the steel pipe is circular; concrete is poured into the steel pipe; the circular inner surface of the steel pipe can generate ideal constraint effect on the concrete; the octagonal outer edge is conveniently connected to construction of beam joints; under the same condition, compared with the bearing capacity of a circular steel pipe concrete component, a square steel pipe concrete component and an octagonal concrete component, the bearing capacity of the octagonal circular-section solid steel pipe concrete component is greatly improved.

The invention relates to a toughening high-strength weather-resistant PVC composition special for boards and a preparation method of the toughening high-strength weather-resistant PVC composition. Thetoughening high-strength weather-resistant PVC composition is characterized by comprising, by weight, 100 parts of PVC resin, 4-6 parts of stabilizer, 3-10 parts of titanium dioxide, 5-16 parts of impact modifier, 1-3 parts of processing aid, 0.5-2 parts of antioxidant, 3-12 parts of calcium carbonate, 0.1-1 part of lubricating agent and 0.01-0.1 part of pigment. The preparation method includes:weighing the materials, blending in a blender, and discharging to obtain the toughening high-strength weather-resistant PVC composition. The toughening high-strength weather-resistant PVC compositionand the preparation method thereof have the advantages that the impact modifier ACR and CPE are used, and the synergistic use of the two allows the PVC boards to have good toughness and tensile strength; by adding the stabilizer and the antioxidant, the PVC boards have excellent weather resistance, and the problem of vulcanization pollution generation is avoided; PVC boards excellent in performance can be prepared by the method, and low manufacturing cost, simple production process and large-scale industrial production can be achieved.

The invention relates to a joint test system and method based on a 2M optical interface protection device. The system is based on a pair of transmission devices configured with 2M optical interface boards in communication connection. The system is characterized by comprising point-to-point test longitudinal channels which are respectively connected with 2M optical interface boards of transmissiondevices at two ends and are sequentially connected with a real-time digital simulation system and a power amplifier, and a plurality of corresponding protection devices are sequentially connected in the two test longitudinal channels in parallel for joint test. According to the invention, the efficiency and accuracy of the test system of the 2M optical interface protection device are effectively improved, and the method has a great practical value for the next step of line performance test and popularization.

The invention provides a kit for guiding human depression drug use and an application thereof. The kit can be used for simultaneously typing 43 gene loci. The kit comprises 43 pairs of amplification primers for amplifying 43 gene segments, wherein the 43 gene loci are shown in a table, and the sequence of 43 pairs of amplification primers is shown in SEQ ID NO.1-SEQ ID NO.86. On the basis of research on large samples, a brand-new site combination is proposed, and accurate guidance and timely feedback are provided for treatment of depression from genes and genetic angles; based on the time-of-flight mass spectrometry technology, genotyping is carried out, and some genes and mutation sites which are most relevant to carefully selected and depressive drugs are subjected to medium flux sequencing, so that the detection time and cost can be greatly reduced, and a highly reliable detection result can still be obtained, so that a highly important clinical application value is achieved.

The invention relates to a fast interval analysis method for antenna electric performance based on eigenorthogonal decomposition. The method comprises the following steps: (1) determining an uncertainvariable x and an initial design space XI; (2) constructing sample point database; (3) calculating the response value corresponding to the initial sample points and constructing a measurement matrixA; 4) carrying out eigenorthogonal decomposition on that measurement matrix A to obtain an optimal basis matrix, and truncating the optimal basi matrix; (5) solving the expansion coefficient alpha n;(6) interpolating and fitting the sample point database and the expansion coefficient alpha n; 7) judging whether that numerical simulation model converges or not, if yes, executing step 9), otherwise, executing step 8); 8) selecting an update point, performing software simulation on that update point to obtain a response value, adding the update point to a sample point database, adding the obtained response value of the antenna electrical performance to a measurement matrix A, and turning to the step 4); (9) carrying out Monte Carlo simulation to obtain the corresponding statistical characteristics.

The invention discloses a wooden cardboard for calligraphy and painting, which relates to the technical field of making arts and crafts articles; it includes a base layer, and a wooden cardboard layer is arranged on the base layer. mm. Compared with the prior art, the present invention can solve the problem that the material used for the picture of the common calligraphy and painting cardboard is single and the picture is easy to be damp.

The invention discloses a system for predicting the development height of a water flowing fractured zone. The system comprises a support system, a rock stratum simulation system fixed to the support system, a water supply system and a water storage system. The rock stratum simulation system comprises a water-bearing layer and a water-resisting layer; the water supply system is connected with the water-bearing layer, and the water supply system is filled with water containing different characteristic isotopes in advance; the water storage system is arranged at the bottom of the rock stratum simulation system. The rock stratum simulation system is constructed in proportion, water of different aquifers is effectively identified, the thousand-difference partial value of identification isotopes in a water storage system is tested, the development height of a water flowing fractured zone is predicted, the defects of a traditional field actual measurement method are overcome, and the method can be suitable for different rock stratum conditions; and a more accurate basis can be provided for predicting the development height of the water-flowing fractured zone.

The invention provides a foot bath device for massaging palms and arms. The foot bath device comprises a hand massaging device, a height adjusting mechanism, a gear transmission mechanism and a power mechanism which are sequentially connected. The power mechanism is in transmission connection with the hand massage device through the gear transmission mechanism and the height adjusting mechanism; and the height adjusting mechanism adjusts the height of the hand massage device in a lifting or folding mode. By means of the mode, the height of the hand massage device can be effectively adjusted through the lifting or folding effect of the height adjusting mechanism, a user can massage the hand at the appropriate height, and the use experience of the user is improved; meanwhile, the hand massage device can be driven to move by adopting the transmission process between one or two groups of power mechanisms and the hand massage device, automatic massage of the hands is realized in the foot bath process, the requirements of users can be met, and the foot bath device has high actual due value.

The invention relates to a method for estimating the impendence of a common-mode interference noise source of a PWM drive motor system. The method for estimating the impendence of the common-mode interference noise source of the PWM drive motor system is characterized in that an impedor with a known impendence value is inserted in a circuit, and the value range of the impendence of the common-mode interference noise source is estimated according to insertion losses.