32results about How to "Meet the needs of various applications" patented technology

This invention discloses a high resolution video ultra strong compression coding / decoding method. Said method includes decomposition of input video and extracting character by small wave change, ordering, quantizing, compressing quantized result in frame and transmitting, separating object from image, predicting next frame, comparing predicted result with input video of next frame, removing same object to obtain residual signal to obtain higher compression ratio, said residual signal used as input video for next circulation. Said invention has higher compression ratio and safety.

The invention discloses a high-strength cast magnesium alloy containing Zn and heavy rare-earth Gd and a preparation method of the high-strength cast magnesium alloy. The high-strength cast magnesium alloy comprises the following components in percent by weight: 10-18 percent of Gd, 0.5-2 percent of Zn, 0.3-0.7 percent of Zr, less than 0.02 percent of inevitable impurities, and the balance of Mg. The preparation method comprises the following steps: weighing the raw materials, smelting the raw materials, casting the smelted material, and conducting the post heat treatment on the cast material. The smelting is conducted under the protection of a solvent or an SF6 and CO2 mixed gas. The post heat treatment comprises two-step solid-solution treatment and one-step aging treatment of the high-strength cast magnesium alloy. The high-strength cast magnesium alloy is simple in process, high in production efficiency, and easily applied to industrial production. The high-strength cast magnesium alloy prepared according to the preparation method can be up to 400-430 MPa in tensile strength at room temperature, and 290-330 MPa in yield strength, is superior to other commercial magnesium alloys in the current market, can be applied in multiple fields such as automobile manufacturing and aerospaces, and meets the requirements of various application occasions.

The invention relates to a grading processing method for space-time track data. The grading processing method comprises the following steps of obtaining increment track data, wherein the track is a path formed by a mobile object in space; using an online compression method to compress the increment track data in real time; obtaining offline track data within a period of time; using an offline compression method to compress the offline track data; extracting feature vectors from the offline track data.

The invention belongs to the technical field of text semantic information processing, and in particular relates to a method and a system for processing text semantics by utilizing an image processing technology and semantic vector space. The system comprises a text input and preprocessing module, a semantic vector construction module, a semantic information processing module and a semantic processing result display module, wherein the semantic information processing module is specifically used for semantic turning sentence extraction, semantic noise sentence detection, semantic range tracking and semantic scene segmentation. According to the method and the system, a text unit is mapped to a pixel in an image, and a semantic vector which describes the text unit is taken as pixel grayscale of the image, so that various technologies and methods in an image processing field can be introduced to process a text flexibly and intuitively without the influence of the diversification of word forms; meanwhile, the semantic vector is constructed by instructing a Word2Vec method, so that the lightweight of algorithms is ensured to meet the requirements on real-time application.

The invention provides a high-strength and high-Gd-content deformed magnesium alloy and a preparing method thereof. The magnesium alloy comprises the following elements of Mg, Gd, Zn and one or more kinds of Y, Zr and Mn. The preparing method includes the following steps that a magnesium alloy cast ingot high in Gd content is prepared; after the magnesium alloy cast ingot is subjected to two steps of T4 solution treatment, quenching is conducted at the temperature ranging from 80 DEG C to 100 DEG C, and a T4-state magnesium alloy cast ingot is obtained; the T4-state magnesium alloy cast ingot is subjected to different-temperature extrusion forming and is then quenched at the temperature ranging from 15 DEG C to 30 DEG C, and a bar or plate is obtained; and the bar or plate is subjected to cold rolling and cold drawing deformation at the room temperature, then artificial aging is conducted, and a T10-state deformed magnesium alloy, namely the high-strength and high-Gd-content deformed magnesium alloy is obtained. According to the high-strength and high-Gd-content deformed magnesium alloy and the preparing method thereof, the preparing technology is simple, the performance is stable, the success rate is high, the production efficiency is high, and the high-strength and high-Gd-content deformed magnesium alloy and the preparing method thereof are easily applied to industrial production.

The invention discloses a large vacuum annealing furnace which is composed of a furnace body, a heating device, a feeding system, a vacuum system, a cooling system and an electric control system, wherein the heating device is arranged in a furnace pipe; the feeding mechanism comprises a feeding trolley, a trailer wagon, a rack and a guide rail along which the rack moves back and forth; the feeding trolley moves back and forth along a steel rail laid in front of a furnace door under the action of a travelling mechanism; the rack travels on the guide rail by a roller row which is composed of a plurality of parallel rollers, and each roller is connected with a roller row frame by a shaft; the vacuum system is used for maintaining the vacuum degree of each annealing stage in the furnace body; the cooling system at least comprises a cooling water system for cooling each group of heaters; the heating device is composed of a plurality of heaters which are mutually and movably connected, and the heaters are installed in the furnace pipe in order; multiple layers of heat shields are arranged between each group of heaters and the inner wall of the furnace pipe; and the a guide rail along which a feeding rack moves back and forth is provided with a group of dismountable sectioned racks which are movably connected.

The invention relates to a manufacturing process of clay ornaments, clay with plasticity index of 5-9 is taken as raw material, and the following steps are adopted: the first step: pretreatment and drying; the second step: crushing or tabletting and aging; the third step: mould pressing; and the fourth step: air-drying and post-treatment. The clay with the better plasticity index is utilized, or thermal refining is performed on the ordinary clay so as to enable the clay to achieve the better plasticity range, and the clay ornaments with low cost, attractive appearance and no cracks can be simply and quickly manufactured through the processes of drying, crushing, aging and mould pressing; and various waterproof and weathering-proof fine ornaments with high degree of imitation of antique imitation, copper imitation and the like can be manufactured by coating waterproof coatings on the surfaces and coloring with paints.

The invention discloses Mg-Li-Al-Zn-Y-based cast magnesium-lithium alloy and a heat treatment method thereof. The magnesium-lithium alloy comprises, by mass, 5-10% of Li, 2-4% of Al, 1-3% of Zn, 1-2%of Y, 0.2-0.8% of Zr, 0-0.05% of Ti, and the balance Mg and unavoidable impurities. By introducing Al and Y to form an Al2Y heat-resistant strengthening phase, the strength and thermal stability of the magnesium-lithium alloy can be significantly improved; meanwhile, by adding Zn, solid solution strengthening can be promoted; by adding trace Zr and Ti, the effect of refining grains can be achieved. The invention also relates to the heat treatment method of the magnesium-lithium alloy. The method comprises the steps of two-stage solid solution treatment and aging treatment, wherein solid solution treatment is performed at 280-420 DEG C for 2-8 hours, then solid solution treatment is performed at 200-270 DEG C for 0-16 hours, and water cooling is performed; finally, aging is performed at 50-150 DEG C for 0-40 hours, and air cooling is performed. The magnesium-lithium alloy is simple in process and can be applied to the fields of aviation, aerospace, military industry, electronics and thelike.

The invention discloses a DOB lamp module, which includes a power supply box, a lens and a metal PCB, and also includes a plurality of DOB plane light source components, the DOB plane light source components are arranged on the metal PCB, and the lens cover is on the DOB plane light source components; A plurality of DOB planar light source components are connected in parallel, and the connection method is a network connection; the DOB planar light source component and the power supply box are connected in a thermal connection; the DOB planar light source component includes a light source, a power supply and an intelligent control module, and the light source, power supply It is integrated with the intelligent control module on the same metal PCB, wherein: the light source includes LED high-voltage chips and a secondary optical system; the power supply adopts a linear framework design adapted to the LED high-voltage chips; the MCU is connected to the intelligent control module For data processing and control of each module. The invention integrates the light source, the power supply and the intelligent control module on the same metal PCB, which reduces the size of the lamp; the intelligent control module can realize dimming and color adjustment of the light source, and is more convenient to use.

The invention discloses an Mg-Gd-Y-Zr magnesium alloy and a heat treatment method of a large-scale complex casting prepared from the Mg-Gd-Y-Zr magnesium alloy. The Mg-Gd-Y-Zr magnesium alloy comprises, by weight, 8.5-10% of Gd, 2.5-3.5% of Y, 0.4-0.6% of Zr, less than or equal to 0.15% of impurities and the balance Mg. The heat treatment method of the large-scale complex casting prepared from the Mg-Gd-Y-Zr magnesium alloy comprises the following steps of 1, carrying out solid solution of the Mg-Gd-Y-Zr magnesium alloy casting, carrying out heat preservation, and carrying out air cooling to a room temperature, and 2, carrying out aging treatment, carrying out heat preservation, and carrying out air cooling to the room temperature. The heat treatment method solves the problem that a rapid cooling process causes uneven shrinkage of all parts so that deformation and cracking phenomenon is produced and a yield is improved by 50%. The heat treatment method has the simple processes, saves water resource, is suitable for large-scale production, can be used in fields of automobiles, aviation and spaceflight, and war industry, and can satisfy requirements of a plurality of application occasions.

The invention provides a method for preparing a natural polymer-based 3D porous composite scaffold with a controlled pore size. The method includes first preparing aminated gelatin, preparing aminatedgelatin nanoparticles by combination with a twice desolvation method, using the particles as a stabilizer for Pickering high internal phase emulsion, dissolving the aminated gelatin and dialdehyde starch into deionized water to form a continuous phase of an emulsion, taking an organic solvent as a dispersed phase, performing homogeneous emulsification treatment to form an oil-in-water Pickering high internal phase emulsion, and then through the intermolecular covalent crosslinking reaction; fixing the continuous phase of the emulsion, and finally removing the dispersed phase through solvent evaporation to obtain the 3D porous composite scaffold with the controlled pore size. According to the method, a Pickering emulsion template method is adopted, the aminated gelatin nanoparticles are taken as the stabilizer, a natural polymer is taken as a base material, and the problems that at present, the porous scaffold is uncontrollable, the material is difficult to degrade, and a degradation product poisons tissue cells are solved. The porous scaffold prepared by the method has good application prospects in the field of tissue engineering.

The invention discloses a silicon-containing heat-resistant rare earth magnesium alloy and a preparation method thereof, wherein the alloy comprises the following components by weight percentage: 5-10% of Gd, 2-8% of Y, 0.3-2% of Si, 0.35-0.8% of Zr, 1-13% of Gd+Y1, less than 0.02% of impurities and the balance of magnesium. The invention also relates to a preparation method of the silicon-containing heat-resistant rare earth magnesium alloy; and the method comprises the steps of raw material preheating, smelting and subsequent heat treatment, wherein the smelting is carried out under protection of the mixed gases of SF6 and CO2; and the subsequent heat treatment comprises solid-solution treatment and aging treatment on the silicon-containing heat-resistant rare earth magnesium alloy. The preparation method of the silicon-containing heat-resistant rare earth magnesium alloy is simple in process, low in content of rare earth, and capable of guaranteeing excellent plasticity while improving the strength of the alloy; and a high-strength high-tenacity heat-resistant wearable magnesium alloy can be obtained by adjusting the constituents of the alloy and the heat treatment process; besides, the obtained magnesium alloy can be applied to a plurality of fields of automobile, aerospace, war industry and the like, and thereby is capable of meeting the requirements of a plurality of application occasions.