33results about How to "Improve development success rate" patented technology

A method for determining a dual-layer top cover of a motor coach with a top-positioned gas cylinder comprises topology optimization, initial structure design, section optimization, anti-overturn stability analysis and fatigue analysis. According to the design requirement, the topology optimization design based on conditions such as bearing capability, shape, power distribution and the like is carried out, thus obtaining an initial space structure of the top cover; subsequently, the section optimization is carried out to the initial space structure and the structure improving design is carriedout so that the improved structure meets the low-order vibration performance and static performance on stiffness and strength; subsequently, the anti-overturn analysis and fatigue analysis are carriedout on the improved structure so as to ensure nonoccurrence of gas leakage problem due to damaged gas cylinder under the overturn working condition of the motor coach with top-positioned gas cylinder, ensure the fatigue durability of the structure of the whole coach, and ensure that the top cover of the motor coach with the top-positioned gas cylinder meets the low-order vibration performance, static performance on stiffness and strength and safety and durability under the overturn working condition. The method simplifies the workload, improves the success rate of product development and shortens development period.

An alternating immersion corrosion testing method for simulating the acceleration of material corrosion by natural seawater includes six parts: alternating immersion corrosion test conditions, pre-test test plate treatment, alternating immersion corrosion test, post-test sample treatment, alternating immersion corrosion rate calculation, comparison between corrosion rates in the same tidal range zone, and test report. With the natural seawater taken as an immersion medium, the large test plate alternating immersion test can be conducted. The test plate is subjected to a cyclic test in the order of firstly being immersed in the seawater, secondly being exposed to the air, and finally be immersed in the seawater. The testing method simulates and studies the law of material corroding in the tidal range zone, and evaluates the corrosion resistance and the aging resistance of the material as well as the protection effect of the protective material, thereby providing a significant technical support for designing, testing and evaluating the adaptability of the material to the marine environment, shortening the period for developing novel materials, projecting the applicable performance of novel materials in environment, increasing the success rate in developing novel materials as well as products and components thereof, and reducing the development cost.

The invention discloses a steel rail rolling method capable of shortening the development cycle of a new species. The method comprises a rolling process of a BD area and a rolling process of a universal area. The last hole pattern of the BD area is a pilot hole, and the first hole pattern of the universal area is a universal coarse rolling hole. For steel rails in a specification of 43-75kg/m, the following parameter range of the same BD area for rolling the steel rails is applied: the rail bottom width difference delta D is smaller than or equal to 15mm, the waist thickness difference delta E is smaller than or equal to 5mm, and the rail height difference delta C is smaller than or equal to 25mm. The hole pattern transition from the pilot hole to the universal coarse rolling hole meets the following requirements: the abdominal cavity widening width L is -3-+5mm; the radius difference delta R of a leg and waist connecting arc and a head and waist connecting arc is smaller than or equal to 10mm; for a leg-inside single-inclination steel rail, the difference of the leg-inside inclination of the pilot hole and the leg-inside inclination of the universal coarse rolling hole is 5-8 degrees; and for a leg-inside double-inclination steel rail, the difference of the leg-inside inclination of the pilot hole and the leg-inside inclination of the universal coarse rolling hole is 3-6 degrees. The development cycle of products can be greatly shortened, the development time of a new product can be shortened by about 2/3, and the development success ratio can be improved by one time, thus the method can be applied to the steel rails of a specification of 43-75kg/m.

The invention discloses a drug activity prediction method and application thereof. The method comprises the following beneficial effects: step one, targets of human on-market or under-study drugs andtreatment activity information are collected by inquiring drug target interaction database information; step two, searching for a plurality of virulence gene databases, collecting disease associationgenes, and according to activity rates of drugs corresponding to the disease association genes, different assignment values of disease association genes of different database sources are given; step three, feature attributes of the drug targets and the disease association genes are built; step four, a machine learning prediction model is constructed; step five, a model prediction result is evaluated; and step six, a drug with activity to a specific disease is predicted. According to the invention, the drug activity prediction method can be used as a GPS in the drug discovery field; disease association genes can be identified efficiently; the effective guidance is provided for prediction, research and development of active drugs; and a novel method and idea is provided for the drug discovery field in future.

The invention relates to a pesticide biological activity testing method that uses Cyclops as acting object. In slight amount vessel, the sensitivity of the sample would be used to take insecticidal activity test by Cyclops. The method is easy to operate and is suited to test biology of slight amount sample. The method could be used to test the activity of the existing variety and research the new pesticides.

The invention provides a corrosion-resistant evaluation test method for a large-diameter seamless line pipe to evaluate corrosion-resistant performances of the large-diameter seamless line pipe. A corrosion-resistant evaluation method suitable for large-diameter seamless line pipe is obtained by experimental comparison in terms of corrosive environments, presence or absence of loading force, surface roughness and the like. The corrosion-resistant evaluation test method for the large-diameter seamless line pipe has the advantages that the method can be used for detecting H2S (hydrogen sulfide) corrosion resistance of the large-diameter seamless line pipe in harsh utilization environments, whether the large-diameter seamless line pipe accords with requirements on actual corrosive environments or not can be more accurately judged by the number and the size of generated hydrogen blisters, and the method has more reference values for guiding utilization of the large-diameter seamless line pipe in projects. In addition, the corrosion-resistant evaluation test method for the large-diameter seamless line pipe is simple in test method and convenient to operate.

The invention relates to a test method for testing the resistance performance of an antifouling coating in a real sea environment. The method includes the following steps that: a cylindrical sample isprepared, and antifouling paint is applied to the treated cylindrical sample until the thickness of the antifouling paint achieves a target coating thickness; the cylindrical sample is soaked into areal sea for d1 days through the buoyant raft of a ship or a real sea resistance performance simulation test device under a condition that a navigation-immobilization ratio ranges from 1:30 to 30:1 and a condition that a speed ranges from 8 to 5 Knots, so that fouling organisms or slime can be attached to the surface of the sample, torque and surface roughness testing is performed on the socked sample; the sample is driven to rotate in seawater by the real sea resistance performance simulation test device at a speed from 8 to 50 Knots, and a turbulent state is generated on the surface of the sample; and the sample is made to rotate in the real sea for d2 days, the sum of d1 and d2 is a test period, after the sample rotates, torque and surface roughness testing is performed on the sample. With the test method of the invention adopted, the state and resistance performance change of the ship in sailing can be simulated realistically; and the comprehensive performance and effect of the resistance of the coating are evaluated by means of monitoring the change of roughness.

The invention discloses a complex product development time prediction and optimization method based on a design structure matrix. The complex product development time prediction and optimization method is characterized in that for a complex product development process composed of n design activities with known average completion time and known information dependence relationship, all design activities of the complex product development process form a design activity set; a design structure matrix corresponding to a product development project is constructed, and an optimization objective function is constructed: according to the optimization objective function, the design structure matrix corresponding to the product development project is solved. The complex product development time prediction and optimization method takes a complex product development project as a research object, aims to predict and reduce product development time, performs analysis and modeling on the DSM corresponding to the product development project, identifies the first-order rework and the second-order rework in the product development project, obtains the optimal execution sequence of all design activities involved in the first-order rework and the second-order rework through optimization, and finally achieves the minimum total rework time of the product development project, so that the purposes of reducing the total product development time, reducing the total product development cost and improving the product development success rate are achieved.

The invention discloses a vacuum design method of a sealed cesium-beam tube. An ideal vacuum degree or pressure can be obtained with a low cost, and the development success rate of the cesium-beam tube is increased. Firstly, the range of the work pressure of the cesium-beam tube is obtained according to a relation curve of the cesium-beam intensity and the pressure inside the cesium-beam tube, then according to the still standing time requirement of the cesium-beam tube, the air output of the material unit time and average air output rate of the material unit area when all components of the cesium-beam tube are subjected to still standing are obtained, through the combination of the air output in the unit time of components of a cesium furnace and the air output in the unit time of components of a detector after electrification, the total air output of the cesium-beam tube in the unit time is obtained, then according to the total air output in the unit time and the range of the work pressure of the cesium-beam tube, the minimal pumping speed of a sputter ion pump is calculated, the structure of the sputter ion pump is determined, and finally a degassing technology of the cesium-beam tube is formulated according to the average air output rate of the unit area of all materials of the cesium-beam tube. The vacuum degree of the cesium-beam tube obtained thereby meets a design requirement, and the cost is low.

The invention discloses an acrylonitrile-butadiene-styrene composition for realizing spray coating flowing mark avoidance and a preparation method thereof. The composition is prepared from 82 to 97.25parts of acrylonitrile-butadiene-styrene resin, 0.5 to 2 parts of light stabilizing agents, 0.1 to 2 parts of heat stabilizing agents, 2 to 10 parts of chemical treatment agents, 0.1 to 2 parts of processing auxiliary agents and 0.05 to 2 parts of metal powder pigments. A novel idea technical route solution is creatively provided in a material aspect. A workpiece produced by the acrylonitrile-butadiene-styrene composition with the spray coating avoiding metal effect through injection molding processing has the advantages that flowing mark flaw defects of the workpieces on the appearance can be completely eliminated; the product appearance quality is greatly improved; the injection molding unqualified product rate is reduced; the considerable benefits are provided for production.

The invention discloses an intelligent control method for the steam quantity and the cavity temperature field of an electric steamer. An evaporation heater, an auxiliary heater and a temperature sensor are arranged in the electric steamer. The method comprises the following steps: S1, acquiring the maximum allowable use power of the evaporation heater and the target temperature and the cooking time in the current working mode; S2, starting an evaporation heater and adjusting power by adopting a PID algorithm to obtain average power; S3, operating at the actual use power and adjusting by adopting a PID algorithm, when the operation time reaches the cooking time, ending cooking, and otherwise, executing S4; and S4, judging whether the current temperature in the cavity reaches the target temperature or not, if so, returning to execute S3, otherwise, starting the auxiliary heater, adjusting and correcting the actual use power of the evaporation heater by adopting a PID algorithm, and returning to execute S3. According to the method, accurate control over the steam amount and the temperature field is considered, the water utilization rate is increased, overflow and dry burning are avoided, the experience feeling is good, the development period is short, cost is low, and universality is good.