71results about How to "Avoid structural changes" patented technology

The invention relates to a memory and a forming method thereof, and a selection method of a storage unit of a memory. The forming method of the memory comprises the following steps: a storage base isprovided; the storage base comprises a substrate and a storage stacking structure formed on the front side of the substrate; a channel column structure and a separation wall for penetrating the storage stacking structure into the surface of the substrate are formed in the storage stacking structure; the back of the substrate is thinned; a dielectric layer is formed on the thinned back of the substrate; a contact part that penetrates the dielectric layer and is connected to the bottom of the channel column structure is formed; source lines are formed on the dielectric layer; and, the contact part located in the same one row is connected with the same one source line. The method provided by the invention is helpful for improving the storage density of the memory.

The invention discloses a high voltage electrolyte for lithium ion batteries, the high voltage electrolyte is composed of an organic solvent, electrolyte lithium salt and a cathode film-forming additive, wherein the organic solvent is a mixed solvent of fluorinated ethylene carbonate, trifluorinated propylene carbonate and hydrofluoroether, the electrolyte lithium salt mixed is lithium salt of lithium hexafluorophosphate and lithium bis(oxalate)borate. The high voltage electrolyte effectively solves the problems that fluorinated solvents are high in viscosity and the electrolyte lithium salt is poor in solubility in fluorinated organic solvents, so that the fluorinated organic solvents can be directly used as the organic solvents in lithium ion battery electrolyte, the high voltage electrolyte has wide electrochemical window and good oxidation resistance and high voltage resistant characteristics, has high electric conductivity, can guarantee the high magnification and power characteristics of a power battery, is high in safety, and can greatly improve the safety performance of the power battery.

The invention relates to a process for producing sheath-core staple fibre with a three-dimensional crimp, and to corresponding sheath-core staple fibre. In this process the fibre, with a symmetrical sheath-core arrangement, is extruded from two different polymer melts, with one polymer component, A, for the core and one polymer component, B, for the sheath. In order to maximize the intensity of the three-dimensional crimping in the fibre, the fibre is cooled with a sharp stream of cooling air, with a quench air velocity of at least 3 m / sec, and, after the fibres have been bundled to a tow, the multi-stage treatment takes place in a fibre line at a maximum temperature load which is below the glass transition temperature of the polymer component B in the sheath of the fibre.; In this way it is possible, after the multi-stage treatment and before the cutting of the fibre, to achieve a high degree of three-dimensional crimp.

The invention discloses an oligonucleotide aptamer for specifically identifying patulin. Through a graphene oxide-based systematic evolution technology of ligands by exponential enrichment, a single stranded oligonucleotide aptamer capable of specifically identifying patulin is acquired. The aptamer can be converted into a report aptamer by marking functional groups and the like. The aptamer is used for detecting patulin. The sequence of the aptamer has a wide application prospect in accurately and quickly detecting patulin in a food.

The invention relates to a selective hydrogenation catalyst for C5 fraction cracking and belongs to the technology field of hydrogenation catalysts. In order to meet the urgent need of the selective hydrogenation catalysts for the C5 fraction cracking, the invention provides a catalyst for selective hydrogenation in the C5 fraction cracking, which contains the following components in the given mass percentages: Ni 10-35%, La 0.5-3%, Ag 0.3-3% and aluminum oxide carrier 59-89.2%, calculated on basis of the total mass of the catalyst. The catalyst can also contains K and / or Sr or Pb. The catalyst is used for selective hydrogenation in the C5 fraction cracking as well as hydrogenation in the C5 fraction cracking and excellent in conversion rate, selectivity and stability.

The invention provides a dual-mode vehicle-mounted radio station system, and the system comprises a first communication module which is used for achieving the GSM-R network communication; a second communication module which is used for realizing LTE-R network communication; and a selection control module which is used for controlling the system to select the first communication module or the second communication module for network communication. The first communication module and the second communication module are respectively powered by an independent power supply. The first communication module and the second communication module respectively employ standard chips and are combined with a peripheral circuit to realize GSM-R and LTE-R network communication. The first communication moduleand the second communication module perform data transmission through the same antenna unit; and the peripheral circuit comprises a signal conversion circuit arranged in the second communication module, and the signal conversion circuit is used for converting LTE-R network communication signals to a specified range and transmitting and receiving the signals through the antenna unit. The dual-moderadio station is wide in application range, low in cost and high in flexibility.

The invention provides a terminal structure which can prevent tin bonding; the terminal passes through the slot of an insulated base and extends out of the exterior of the insulated base so as to form a welding part; the appearance of the terminal is processed as an electro-plating layer; the terminal is provided with a naked area which is formed by the laser etching at the internal side of the welding part; furthermore, the naked area is provided with a tin collecting trough which prevents the tin bonding during the welding process of the welding part. Tin liquid is collected when the welding is carried out at the welding part, thus achieving the object of preventing the tin bonded to the terminal and avoiding the short circuit phenomenon of the terminal or the structural change of the terminal.

A surface of a LiCoO2-based positive electrode active material to have a rock salt crystal structure is provided. Specifically, a positive electrode active material for a lithium rechargeable battery is provided, including: a core particle containing lithium cobalt oxide doped with aluminum (Al); and a coating layer positioned on a surface of the core particle and containing a cobalt(Co)-based compound having a rock salt crystal structure. A method of producing the positive electrode active material is also provided using a solid-phase method. The positive electrode active material can be applied to a positive electrode, lithium rechargeable battery, battery module, battery pack, and the like.

An HMT (head-mounted display) optical system provided with an adjustable exit pupil comprises a front fixing group, a zooming group, a compensation group and a rear fixing group. The position relation is shown as follows: with a microdisplay or a middle image plane as an object plane, the front fixing group, the zooming group, the compensation group and the rear fixing group are arranged sequentially, and each of the front fixing group, the zooming group, the compensation group and the rear fixing group is arranged in an axial symmetry manner relative to an optical axis; the front fixing group and the rear fixing group always keep unchanged in position in the zooming process of the optical system, and the zooming group and the compensation group move along the optical axis in accordance with respective curves in the zooming process of the optical system. A front focal plane and a rear focal plane of the optical system are kept fixed in the moving process of the zooming group and the compensation group, so that the front focal plane of the optical system and the object plane coincide, and the rear focal plane of the optical system and the exit pupil coincide. The optical system has the characteristics of being simple in structure, high in light energy utilization rate, high in imaging quality and the like and can realize expansion and intelligent adjustment of the exit pupil.

The present invention provides a cement mortar composition and concrete composition and particularly, it provides a cement mortar composition comprising 100 parts by weight of cements, 100 to 300 parts by weight of glass beads, and 50 to 200 parts by weight of blending water and a concrete composition comprising the cement composition and aggregates. The cement mortar composition and concrete composition of the invention have excellent fluidity with the use of a small amount of blending water so that they can promptly migrate in the direction of gravity in a mold complicated with steel rods and other wires, prevent material separation and remove bubbles present inner or outer areas due to superior filling performance, can remarkably improve waterproof property of mortar (or concrete) and prevent their degradation. Besides, they require no additional cooling systems which are installed to control heat of hydration in civil engineering such as dams, piers and tunnels that are largely cast by absorbing the generated hydration heat within the mortar (or concrete), show no material separation phenomena, can block the alteration of a structure generated by corrosion by converting the surface of reinforcing rods into passevation, and enable high quality by having a reduced construction period due to shortened time to gain initial hardness from the start of construction, and having the high smoothness of finished faces and having no unevenness such as bubbles due to excellent filling performance.

The invention discloses a nut hot-embedding device for automobile non-metal parts. The device comprises a fixed heating conveying mechanism; a nut feeding mechanism is arranged on one side of the fixed heating and conveying mechanism; a nut conveying mechanism is arranged on the other side of the fixed heating and conveying mechanism; a part feeding mechanism is arranged on one side of the nut conveying mechanism; the fixed heating and conveying mechanism comprises a fixed conveying mechanism and a heating mechanism; the fixed conveying mechanism comprises a first bed body; a first conveyor belt is arranged on the first bed body; fixed electromagnets are arranged on the first conveyor belt; the heating mechanism comprises a top plate; side plates are arranged at the two ends of the bottomof the top plate; heating pipes are arranged on the bottom of the top plate and the side surfaces of the side plates; and the part feeding mechanism comprises a fourth bed body. The device has the advantages that the fixed heating and conveying mechanism and the part feeding mechanism are arranged so that the hot-embedding work can be rapidly completed, meanwhile the heat loss after nuts are heated can be effectively prevented, and therefore the quality of the hot-embedding working can be improved, the labor cost can be lowered, and the practicability is high.

The invention relates to a measuring system for detecting OTDR by using symmetrical linear chirped pulses. The system can detect microsecond-level temperature or change trend of stress acting on an optical fiber to be detected in a distributed optical fiber sensor system by using the symmetrical linear chirped pulses as detection light; by utilizing the characteristics of electromagnetic resistance, corrosion resistance and high temperature resistance of the optical fiber, the system can be used in a high-risk environment for detection operation; linear chirped pulses are used as detection light and are symmetrical pulse light in a frequency band range, and at an acting point of the to-be-measured optical fiber, backward Rayleigh scattering is used, and two detection wave crests are reflected back; a microsecond-level time difference exists between the two wave crests, so that the two wave crests reflect different disturbances; and the change trend of the to-be-measured physical quantity measured between the two wave crests, namely in the microsecond order of magnitude, is extracted through modulation and demodulation of the two waves, and the defects that a traditional distributedoptical fiber sensor needs to sweep frequency continuously, can only measure the dependent variable and needs long time are overcome.

The present invention provides a cathode active material for a secondary battery, the cathode active material being a lithium cobalt-based oxide comprising doping element M, wherein particles of the lithium cobalt-based oxide contain the doping element M in an amount of 3,000 ppm or higher wherein the doping element M is uniform in concentration across a bulk portion covering the core side corresponding to 90 % of the radius from the core to the surface in the particle and present in a surficial portion at a concentration identical to or higher than in the bulk portion and has a concentrationgradient gradually decreasing from the surface of the particle in the core direction, the surficial portion covering a depth of 100 nm from the surface of the particle in the core direction.

Implantable materials for medical or surgical applications comprising specific chemical groups on their surface to alter the physico-chemical properties of said material rendering it suitable implantation or biocompatible properties.

The invention provides a method for processing fructus aurantii medicinal slices. The method comprises the following steps: washing fructus aurantii, adding into a herbal medicine infiltrating machine, vacuumizing, and controlling a series of parameters such as infiltrating temperature and time, slice thickness, drying temperature and time and the like, thereby realizing preparation of the fructusaurantii medicinal slices. The content of active ingredients of the fructus aurantii medicinal slices, such as hesperidin, neohesperidin, naringin, narirutin and the like is high, and the curative effect of the drug is effectively ensured. The preparation method disclosed by the invention is simple and suitable for industrialized production.

The invention relates to a preparation method of an optical fiber bundle sleeve, the optical fiber bundle sleeve and a preparation method of a multi-core optical fiber coupler, the optical fiber bundle sleeve is used for plugging a single-mode optical fiber so that the single-mode optical fiber and the multi-core optical fiber are enabled to be welded and the multi-core optical fiber coupler can be formed, and the preparation method comprises the following steps: selecting a plurality of first tube bodies according to the multi-core optical fiber; stacking the first tube bodies into a tube bundle according to the geometric arrangement of the fiber core circle centers of the multi-core optical fibers; introducing gas into the pipe hole of the first pipe body, carrying out fusion drawing, and meanwhile, adjusting the air pressure value to enable the pipe hole of the first pipe body to form an optical fiber inserting hole and obtain an optical fiber bundle sleeve, wherein the optical fiber inserting hole meets the conditions that d is greater than d1, d-d1 is located in a first set interval, d is the inner diameter of the optical fiber inserting hole, and d1 is the diameter of a single-mode optical fiber for inserting into the optical fiber inserting hole, the distance between adjacent optical fiber plugging holes is equal to the distance between adjacent fiber cores in the multi-core optical fiber. According to the invention, the problems of large coupling loss and uneven coupling between fiber cores in the prior art can be solved.

The present invention discloses a manufacture method of canned low-sugar and selenium-enriched olive and belongs to the technical field of can processing. The manufacture method comprises the following steps: (1) raw material preparing; (2) bitterness removing and de-alkalizing; (3) pickling and slurry preparing; (4) homogenizing and sterilizing; and (5) canning and packaging. The canned low-sugarand selenium-enriched olive contains various nutrients, and content of each of the nutrients is as follows: 0.7-0.9% of energy, 0.5-0.7% of protein, 0.15-0.19% of vitamin C, 0.26-0.28% of calcium, 0.16-0.18% of selenium, 0.17-0.21% of potassium, 0.10-0.14% of vitamin E and 0.09-0.11% of iron.

The invention relates to a preparing method for a nickel tin-carbon-silicon electrode material. According to the material, silicon oxide with the high specific surface area is used as a raw material, mechanically mixed with magnesium, reduced in a high temperature thermal mode, treated in an acid mode, and coated with a conducting polymer, nickel oxide and tin oxide are deposited, and tabletting and high-temperature thermal reducing are carried out, so that the nickel tin-carbon-silicon electrode material is obtained; the specific surface area of silicon oxide is larger than 700 m<2> / g, and silicon oxide is one of silicon oxide nanometer powder, silicon oxide nanospheres, silicon oxide SBA-15, silicon oxide MCM-41 and silicon oxide KIT-6; the conducting polymer is one of polyaniline, polypyrrole, polythiophene and polyacetylene; the molar ratio of silicon oxide to magnesium is 1:(2-4), the molar ratio of silicon oxide to the conducting polymer precursor is 1:(1-5), the molar ratio of nickel oxide to the conducting polymer precursor is 1:(1-20), and the molar ratio of nickel oxide to tin oxide is 3:(1-8). The composite material has the advantages of being stable in structure and good in conductivity, having high specific capacity and excellent cycle performance when being used in a negative pole of a lithium battery, and having a good application prospect in the field of the batteries.

The invention relates to a selective hydrogenation catalyst for C5 cracking and belongs to the technology field of hydrogenation catalysts. In order to meet the urgent need of the selective hydrogenation catalysts for the C5 cracking, the invention provides a catalyst for selective hydrogenation in the C5 cracking, which contains the following components in the given mass percentages: Ni 10-35%, La 0.5-3%, Ag 0.3-3% and aluminum oxide carrier 59-89.2%, calculated on basis of the total mass of the catalyst. The catalyst can also contain K and / or Sr or Pb. The catalyst is used for selective hydrogenation in the C5 cracking as well as hydrogenation in the C5 cracking and excellent in conversion rate, selectivity and stability.

The invention relates to a method for extracting polyphenol substances from litchi pericarp, and belongs to the technical field of active substance extraction of agricultural products. The preparation method comprises the following steps: treating raw materials, extracting, purifying, drying and the like. According to the method, the polyphenol substances in the litchi pericarp are subjected to alcohol extraction by combination of low-temperature liquid nitrogen crushing and a surfactant serving as an assistant, so that the extraction rate on the polyphenol substances is improved; the extraction time is shortened; the extraction temperature is reduced; the activity of the polyphenol substances is kept; and the method is efficient in extraction process, free of pollution and low in cost.

The invention provides an electroplating automatic line exhaust mechanism, and belongs to the field of electroplating equipment. The electroplating automatic line exhaust mechanism comprises exhaust assemblies, single-groove air flues, main air flues and fans, wherein the exhaust assemblies, the single-groove air flues, the main air flues and the fans are arranged on the two sides of the upper ends of solution tanks; each exhaust assembly is arranged corresponding to one single-groove air flue and comprises an air cover, a door cover, an air cover air cavity and an air sucking opening; the airsucking openings communicate with the interiors of the air cavities and the interiors of the solution tanks; one ends of the air cavities communicate with the single-groove air flues which communicate with the main air flues; the fans are arranged at the ends, away from the single-groove air flues, of the main air flues; and the door covers are arranged at the ends, close to the solution tanks, of the air covers, and the height of the lower end faces of the door covers is smaller than that of the air sucking openings. The electroplating automatic line exhaust mechanism is simple in structure,good in air sucking effect, free of leakage, and capable of achieving energy saving and environmental protection.

The invention discloses a preparation method and application of jasmine flower residue active polysaccharide, and belongs to the technical field of plant extraction. The jasmine flower residue activepolysaccharide is prepared by taking a jasmine flower byproduct, jasmine flower residues, as a raw material through the steps of jasmine flower residue pretreatment, jasmine flower residue total extract preparation, total extract fractional extraction, jasmine flower residue crude polysaccharide preparation, jasmine flower residue polysaccharide separation and purification and the like. Accordingto the method, the jasmine flower residue polysaccharides with different molecular weights can be prepared, and the jasmine flower residue polysaccharides with different functional activities can be efficiently separated and purified. According to different molecular weights, the jasmine flower residue polysaccharide disclosed by the invention can be applied to preparation of medicines for regulating immunity, anti-insomnia or anti-depression medicines, anti-diabetic medicines and the like.

The invention relates to a cross lap-forming device to form a non-woven fabric through several layers of fibrous webs, the cross lap-forming device comprises at least one endlessly revolving input belt (2), which conveys the fibrous webs (3) from an input area of the cross lap-forming device (1) to a laying gap (11) of a laying support, the cross lap-forming device also comprises another endlessly revolving belt which cooperates with the laying support, and the endlessly revolving belt and the input belt (2) lay the fibrous webs (3) on an output belt (15). The invention is characterized in that the endlessly revolving belt is available as an air-permeable belt having at least one air-impermeable edge.

The invention provides a placenta growth factor quality control product and a preparation method thereof. The placenta growth factor quality control product comprises a placenta growth factor antigen, newborn calf serum, BSA and / or casein, glycerin and / or Tween 80, mannitol and / or xylitol and a preservative. The placenta growth factor quality control product disclosed by the invention is simple in preparation method, high in accuracy, high in precision and good in stability, can be applied to a fluorescence immunoassay platform of a POCT system, and is suitable for placenta growth factor detection kits clinically common on the platform. A quality control substance is provided for placenta growth factor kit evaluation and indoor and interventricular quality evaluation in clinical laboratories.

The invention discloses a union dyeing method of a polyester-cotton fabric with indigo dye. The polyester-cotton fabric is dyed through the indigo dye in a two-bath two-step dyeing manner. The method including following steps: adding the indigo dye, sodium hydrosulfite and sodium hydroxide to a dye bath, increasing a temperature to 40-80 DEG C and maintaining the temperature for 10-50 min to enable the indigo dye to be reduced, adding a carrier and sodium chloride, putting the polyester-cotton fabric into the dye bath, increasing the temperature to 80-100 DEG C and maintaining the temperature for 20-90 min, adding the indigo dye, the sodium hydrosulfite and the sodium hydroxide to another dye bath, increasing the temperature to 40-80 DEG C and maintaining the temperature for 10-50 min to enable the indigo dye to be reduced, putting the dyed polyester-cotton fabric into the dye bath, increasing the temperature to 20-60 DEG C and maintaining the temperature for 30-60 min, and finally carrying out a water-washing process, a soaping process, a water-washing process and a drying process, or a drying process by air, to the dyed fabric. By means of the two-bath two-step dyeing method, the polyester-cotton fabric is dyed so that polyester and cotton fabric have a relative good identical color ability and a satisfactory dyeing depth can be achieved. The method is simple and feasible.

The invention relates to the technical field of laser radars, in particular to a laser emission device and a laser radar. The laser emission device comprises a laser emission array (110), a first laser emission unit group (120) and a first emission optical adjustment unit group (140); the laser emission array (110) comprises a first laser emission unit group (120); the first laser emission unit group (120) comprises a plurality of first laser emission units (122); the first emission optical adjustment unit group (140) comprises a plurality of first emission optical adjustment units (142); a first emission optical adjustment unit (142) in the first emission optical adjustment unit group (140) is arranged corresponding to a first laser emission unit (122) in the first laser emission unit group (120), and is used for adjusting the emitting direction of a laser signal emitted by the first laser emission unit (122) in the first laser emission unit group (120); a laser beam emitted by the first laser emission unit (122) is aligned at a close distance to the detection field of view. The measurement efficiency of the laser radar on the close-range object is improved.

A positive electrode active material for a secondary battery is provided. The positive electrode active material being a lithium cobalt-based oxide includes a doping element M. A lithium cobalt-based oxide particle containing the doping element M in an amount of 3,000 ppm or more, wherein in a bulk portion corresponding to 90% of a core side among the radius from a core of the particle to a surface thereof, the doping element M in the lithium cobalt-based oxide particle is contained at a constant concentration, and in a surface portion from the surface of the particle to 100 nm in a core direction, the doping element M is contained at a concentration equal to or higher than that in the bulk portion and has a concentration in which the concentration thereof is gradient gradually decreased in the core direction from the surface of the particle.

The invention relates to a fluorophosphate coated lithium titanate composite material as well as a preparation method and application thereof. The composite material is prepared from lithium titanateand a fluorophosphates coated layer which covers the surface of the lithium titanate. The method comprises the following steps: dissolving the lithium titanate into a solvent; after uniformly stirring, adding fluorophosphates; carrying out low-temperature spraying and drying to form a fluorophosphates coated object on the surfaces of lithium titanate particles; then carrying out microwave-method high-temperature sintering to obtain the fluorophosphate coated lithium titanate composite material. According to the fluorophosphate coated lithium titanate composite material provided by the invention, the discharging capacity, the circulating performance and the rate performance are remarkably improved; a lithium-ion battery which is prepared by taking the composite material as a negative electrode material not only has good conductivity, high rate capacity and long cycle life, but also has the advantage of less produced gas, so that the fluorophosphate coated lithium titanate composite material has a good industrial application prospect.

The invention relates to the technical field of aluminum material production and discloses intelligent equipment based on aluminum material production. The intelligent equipment comprises an equipmentbody, a control box, a noise reduction device, a cooling device, a flat clamp and telescopic rods. A worktable is fixedly mounted on the outer surface of the upper end of the equipment body, blockingdoors are movably mounted on the outer surface of the front end of the equipment body, and a UPS device, a motor, a battery pack and a connecting piece are fixedly mounted inside the equipment body.Supporting arms and pulley sets are movably mounted on the outer surface of the upper end of the worktable, a support is movably mounted on the outer surface of one side of the worktable, and clampinggrooves and sliding grooves are fixedly formed in the middle of the support. Rotating shafts are arranged between the telescopic rods and the support. According to the intelligent equipment based onaluminum material production, through cooperation of the rotating shafts and the sliding grooves, the support and the telescopic rods can be folded to decrease the size of the support, thus a worker conveniently slides the support into a main equipment body for overall moving and using, and the structural wholeness of the intelligent equipment is ensured.