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

The invention relates to a machining method of carbon-fiber composite material plate connecting holes. The machining method comprises the following steps that 1, the basic diameter of the connecting holes and the deformation amount in the hole depth direction are calculated; 2, the connecting holes are machined according to the basic diameter of the connecting holes and the deformation amount in the hole depth direction; and 3, a structural adhesive is coated on the periphery of each connecting hole and cured at room temperature. Compared with the prior art, the connection holes obtained through the machining method greatly improves the connection strength under the premise of meeting the relevant technical requirements, reduces the stress concentration in the peripheral area of the connection holes, reduces the risk of cracking or layering failure of the carbon-fiber composite material in the area and delays the time for hole peripheral layering failure, so that the connection strength of the carbon-fiber composite material parts with the connecting holes is improved, and the service life is prolonged.

The invention discloses an acrylonitrile-butadiene-styrene composition for solving spray-free flow marks and a preparation method thereof. The composition includes acrylonitrile-butadiene-styrene resin: 82-97.25 parts, light stabilizer : 0.5-2 parts, heat stabilizer: 0.1-2 parts, chemical treatment agent: 2-10 parts, processing aid: 0.1-2 parts, metal powder pigment: 0.05-2 parts. This invention creatively provides a solution of a new idea and technical route in terms of materials. The spray-free metal effect acrylonitrile-butadiene-styrene composition of the invention is used for parts produced by injection molding, which completely eliminates the The flow mark defects on the appearance of the parts greatly improve the appearance quality of the product, reduce the rate of defective injection molding products, and bring considerable benefits to production.

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 a broadband angular vibration exciting device, which comprises a rigid base, wherein the rigid base is fixedly connected with a vibration exciter and a soft suspension; the soft suspension is fixedly connected with a square testing piece; the square testing piece is connected with the vibration exciter; an angular accelerometer is arranged on the square testing piece, and is connected with a vibration control instrument; the vibration control instrument is connected with a power amplifier; the power amplifier is connected with the vibration exciter; the vibration exciter is connected with a control computer; the vibrator control instrument is used for controlling vibration; the angular accelerometer is used for measuring and monitoring an angular vibration environment; the vibration control instrument is used for computing according to a feedback signal of the angular accelerometer to obtain an output signal; the output signal is used for driving the vibration exciter to excite the square testing piece after being amplified by using the power amplifier; and the control computer is used for monitoring and controlling the angular vibration situation in real time. The broadband angular vibration exciting device has the characteristics of high accuracy and capability of realizing angular vibration exciting on wide frequency bands.

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 carried out 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.

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.