76results about How to "Little change in shape" patented technology

The invention discloses an optical shooting lens set, an image capture device and an electronic device. The optical shooting lens set comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens in sequence from an object side to an image side. The first lens has positive refractive power, and the object side surface thereof near an optic axis is a convex surface. The second lens has refractive power. The third lens has refractive power. The fourth lens has refractive power. The fifth lens has refractive power, the image side surface thereof near the optic axis is a convex surface, and the object side surface and the image side surface thereof are aspheric surfaces. The sixth lens has refractive power, and the object side surface and the image side surface thereof are aspheric surfaces. The invention further discloses an image capture device with the optical shooting lens set and an electronic device with the image capture device. When satisfying a specific condition, the optical shooting lens set has good telephoto capability.

The invention discloses an optical imaging lens group, an image capturing device and an electronic device. The optical imaging lens group comprises, from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens and a fifth lens which have refraction power. The first lens has positive refraction power and an object side surface, close to an optical axis, of the first lens is a convex surface. The second lens has positive refraction power and an object side surface, close to an optical axis, of the second lens is a convex surface. The third lens has refraction power. The fourth lens has positive refraction power; an object side surface, close to an optical axis, of the fourth lens is a convex surface; an image side surface close to the optical axis is a convex surface; and the object side surface and image side surface are both aspheric surfaces. The fifth lens has negative refraction power; an object side surface, close to an optical axis, of the fifth lens is a concave surface; an image side surface close to the optical axis is a concave surface; the image side surface, away from the axis, is provided with a convex surface; the object side surface and the image side surface are both aspheric surfaces. Any two of the above adjacent lenses are spaced by air. The invention also discloses an image capturing device provided with the optical imaging lens group and an electronic device provided with the image capturing device.

The invention discloses the preparation method of red phosphor Zn2SiO4:Eu3+, which adopts the combustion method as the novel preparation method; Urea is used as the incendiary agent to synthesize the red phosphor Zn2SiO4:Eu3+ successfully; the combustion thermal discharge is improved and excessive combustion gas is generated through the addition of a small quantity of combustion auxiliary agent ammonium nitrate so that the combustion product is ensured to be looser; the combustion auxiliary agent is combusted in the interior of the mixture to catalyze the whole combustion reaction, facilitating the system to overcome high reaction activation potential barrier; the raw product is combusted within the temperature range of the experiment; after the continuous heat preservation; the product has small morphological changes; the crystal formation of the product is good, avoiding the decreasing of the luminescent property caused by the damage of the crystal lattice after grinding and crushing.

The invention relates to the technical field of biomedicine, in particular to cell cryopreservation fluid and application thereof. The cell cryopreservation fluid disclosed by the invention is prepared from the following components: dimethyl sulfoxide, human albumin, low-molecular dextran, a human mesenchymal stem cell exosome, hydroxyethyl starch and a basal culture medium. Cells cryopreserved and revived by using the cell cryopreservation fluid are high in viability, the morphologic change is not large, differentiation cannot be caused during culture, and surface antigen detection accords with the standard; in addition, by optimizing a cell cryopreservation scheme, death of a large amount of cells caused by ice crystal formation during a cryopreservation process of the cells can be avoided as much as possible, a cryopreservation system is optimized, revived cells can be directly fed back to a human body, and animal derived serum is not added, animal derived virus infection is avoided; the cell cryopreservation fluid is wide in application, and the technical problem that the cell viability after the reviving of the cells which are cryopreserved by an existing cell cryopreservationsystem is not high is solved.

The invention relates to a processing method of plating wire distribution of IC packing substrate, including: a. arranging plating wires between wire patterns in packing substrate units to make all the wires of the wire patterns connect mutually by plating wires, where the plating wires or wire patterns connect with metal power supply layers in packing substrates; b. making plating treatment on the packing substrates and eliminating the plating wires by chemically etching process. The invention public plating wires between wire patterns in the packing substrates units, where the plating public wires are thinner than the wire patterns and narrower than the narrowest wire pattern, and eliminates the public wires by etching process, can make the shape change of the wire patterns minimum by controlling etching process conditions, thus beneficial to the improvement of electric performance of the substrate, assuring the integrity of signals and able to reduce wiring area, especially applied to make high-frequency high-speed IC packing substrates.

The invention relates to a conveyor belt system comprising a conveyor belt (1) extending in the longitudinal direction and a plurality of support roller stations (2) arranged at a distance from each other in the longitudinal direction and on which the conveyor belt (1) is supported by support rollers (3), said conveyor belt (1) being formed from a flexible base material (4) and a plurality of unconnected traction means (5) which determine the tensile strength of the conveyor belt (1) and which extend in the longitudinal direction. According to the invention, in the cross-section of the conveyor belt (1) and with respect to a desired position on a central belt section (a) supported on a support roller (3) of the support roller station (2), the tensile strength relative to the belt width is less than on the laterally adjoining belt sections (b) which are not supported in the desired position by a support roller (3). The invention also relates to the conveyor belt (1) itself.

The invention discloses a preparation method of alumina. The method is as below: merging an aluminum salt solution and a precipitating agent, and adding the mixture into a water solution containing polyethylene glycol to conduct a co-precipitation reaction; aging, filtering and drying the obtained pseudo-boehmite dry glue; and roasting the pseudo-boehmite dry glue to obtain gamma-Al2O3 powder. The method has the advantages of simple process and low production cost; the prepared alumina has regular layered structure, less aggregation of powder particles, large pore volume, large aperture, high specific surface area and little pollution to environment, and is easy for realization of industrialized production.

The present invention is provides an energy storage element, in which a metal component is formed by forming a protrusion on a plate shaped member while ensuring the mechanical strength of and in the vicinity of the protrusion. An energy storage element (100) includes: a metal component (2) that is a metal plate member that includes a protrusion (2b)extending from a surface of the metal plate member, and is provided as a portion of a container (101). The protrusion (2b) includes: a tubular portion (22) provided at a tip end of the protrusion in an extending direction, and a base portion (21) that is solid and extends from the surface of the metal component (2) to the tubular portion (22) in the extending direction.

The invention discloses a technique method, and especially relates to a technique of full width continuous pretreatment cleaning production of knitted fabrics. The technique is carried out according to steps of use of degreaser and bleaching liquid assistant and formula design-design of very technical parameter of full width continuous pretreatment-intelligent control production of full width continuous pretreatment-dyeing of gas-liquid dyeing machine-post finishing-finished product inspection. A technique of full width continuous pretreatment cleaning production of knitted fabrics can replacean overflow dyeing machine and its similar wet processing technique method, and has obvious effects of energy-saving and emission reduction; the technique has the advantages of improving the production efficiency, reducing resource, energy source, materials and human resources while improving the quality of the of knitted and dyed product and the product grade, further promoting the market competitiveness of enterprises and products, and creating preconditions. Moreover, the technique solves the problems widely concerned by the industry that the production efficiency of the existing wet treatment techniques and technical equipment for bleaching, dyeing, washing knitted fabrics is low; consumptions of resource, energy source, material and human source are huge; the emission amount of bleaching and dyeing waste water and pollutants is big.

The invention relates to tea leaf dryers, and specifically relates to a tea leaf high-voltage electrostatic field dryer. Drying technology brings direct influence for output and quality of tea leaf, present drying technology usually employs flat type, tunnel type or hot-air circulating type dryers for drying, and the flat type, tunnel type or hot-air circulating type dryers respectively have problems of influencing quality, appearance and output of tea leaf. The high-voltage electrostatic field dryer comprise a baking oven, an evaporating chamber, an air inlet, an air outlet, an air exhaust device and a high-voltage electrostatic field generating assembly; and the high-voltage electrostatic field generating assembly mainly consists of a power supply, a pressure regulating rectifier, an upper pole plate, a lower pole plate and a controller. The tea leaf drying process is performed at a normal temperature when the high-voltage electrostatic field dryer is employed, so that the compositions of tea leaf are effectively protected, and dried tea leaf is small in color and shape variation; the broken rate of tea leaf is low, the quality and the beauty of tea leaf are effectively guaranteed, the output is improved, and especially quality guarantee is provided for production of high-grade tea leaf.

The invention discloses a variable-compression-ratio mechanism of an engine and an air distribution system matched with variable-compression-ratio mechanism. An inner cavity is formed in the center position of the top of an air cylinder cover to serve as a hydraulic cylinder barrel. A piston cover is fixed to the top of the hydraulic cylinder barrel, and a hydraulic cylinder inner sleeve is arranged at the bottom of the center of the piston cover. An annular piston body is arranged in the hydraulic cylinder barrel in a sealed and sleeved manner. An upper oil cavity and a lower oil cavity are formed in the upper end and the lower end of the piston body correspondingly and communicate with an oil inlet pipe and an oil outlet pipe correspondingly. A spark plug installation head is arranged at the bottom of the annular piston body and is fixedly connected with a spark head. The compression ratio of the variable-compression-ratio mechanism can be adjusted in a stepless manner; the engine adopting the variable-compression-ratio mechanism is suitable for multi-fuel driving; emission can be better reduced; running stability is improved; torque is improved; implementation is simple, convenient and feasible; and the construction cost is low.

The invention discloses a preparation method of P-phase VO2 nano-powder. The method adopts a hydrothermal method and specifically comprises the following steps: firstly, ammonium metavanadate and docusate sodium are added to water and stirred, a mixed solution is obtained, a formic acid solution is added dropwise to the mixed solution under stirring, and a reaction precursor solution is obtained; then the reaction precursor solution is placed at 180-250 DEG C for closed reaction, a reaction liquid is obtained and subjected to solid-liquid separation, washing and drying, and a granular target product with particle size being 50-90 nm, namely, the P-phase VO2 nano-powder, is obtained. The preparation method has the characteristics that environmental protection is realized and nitrogen protection is not needed for follow-up annealing treatment of the target product, conversion of VO2(P) to VO2(M) can be realized easily through low temperature thermal treatment, and accordingly, the final product VO2(M) is applied to the fields of energy-saving windows, sensors, storage devices and the like commercially and widely quite easily.

The invention relates to a method for breeding high-yielding strain of tetracycline. The method is characterized by comprising the steps of: adding water into cultured Streptomyces aureus strains to prepare a spore suspension; shaking the flask for cultivation; filtrating; diluting; filling the suspension in four test tubes; adding a same amount of an EDTA solution and acting for respectively 3, 4, 5 and 7min; adding lysozyme and acting for 3 min; conducting gradient dilution to 10<-5>; and coating 0.1, 0.3 and 0.5ml spore liquid from each dilution on plates for cultivation; calculating a forward-mutation rate and a mortality rate; selecting an acting time with high forward-mutation rate; conducting further flask shaking screening; and selecting strains with high increase rate. The invention adopts a method, which first uses lysozyme to remove cell wall and then conducts EDTA treatment, thus breeding high-quality and high-yielding strain of tetracycline; and compared with an ultraviolet method and an ion implantation method, the method provided by the invention has advantages of simple operation, low cost, high safety, little environmental pollution, high mutation rate of strains, and high shake flask titer of the produced strain.

The invention provides a siphon head which is larger in siphon force and used for cleaning a swimming pool. The siphon head for cleaning the swimming pool comprises a cylinder body (1), wherein a sewage outlet (3) is formed in the upper end of the cylinder body (1), a sewage suction mouth (4) is formed in the lower end of the cylinder body (1), a water inlet (2) is formed in the side wall of the cylinder body (1), the water inlet (2) is communicated with a water outlet hole (6), the water outlet hole (6) is formed in the inner wall of the cylinder body (1), and the water outlet direction faces towards the sewage outlet (3). The siphon head for cleaning the swimming pool is characterized in that the number of the water outlet hole (6) is one, the sewage outlet (3) is connected with a cover (5), a gap is reserved in the position, over the water outlet hole (6), of the cover (5), and the size of the gap is from one fourths to one seconds of the area of the cover.

The invention discloses a semiconductor device and a formation method thereof. The method comprises the following steps that: forming first grid electrode structure bodies on the first area of a substrate, first initial protection layers and first dielectric layers, wherein the first initial protection layers are positioned on the surfaces of the side walls and the top wall of each first grid electrode structure body, and each first dielectric layer covers each first initial protection layer; etching to remove parts of each first dielectric layer of the first area to enable a second dielectriclayer to be formed on each first dielectric layer of the first area, and enabling the first initial protection layer on the top of each first grid electrode structure body and parts of the first initial protection layer on the side walls of each grid electrode structure body to be exposed; carrying out an intermediate processing technology for at least one time until the second dielectric layer is removed, and enabling the first initial protection layers to form first protection layers positioned on the surfaces of the side walls and the top of the first grid electrode structure body, whereinthe intermediate processing technology comprises the following step of carrying out back etching on parts of the second dielectric layer of the first area after parts of the first initial protectionlayer on the top of the first grid electrode structure body are planarized. By use of the method, the performance of the semiconductor device is improved.

The invention relates to a light and wear-resistant automobile engine piston and a preparing method thereof and belongs to the technical field of piston machining. A head and a skirt part connected to the lower end of the head are reserved on the automobile engine piston. The head is provided with an oil ring groove and a gas ring groove in sequence from bottom to top. A radial small hole is formed in the bottom face of the oil ring groove. Two opposite pin holes are formed in the two sides of the skirt part. The engine piston is made of an aluminum alloy ceramic porous material which includes aluminum alloy powder, ceramic powder, a pore-forming agent and a binding agent with the mass ratio of 100:(55.1-165.2):(0.4-0.9):(9-12). The piston prepared through the method is good in mechanical property, good in thermal shock resisting property, low in noise, small in specific gravity and convenient o use and transport.

The invention relates to a flat bar system (100) for use on a carding machine (K) for cotton, man-made fibers or such like. The flat bar system comprises an elongated flat bar (102) to which a magnetic element (103) is fastened, and an elongated flat top strip (104) which on its rear side (107) facing the flat bar (102) has a rear layer containing a ferrous material. The flat top strip (104) can therefore be detachably fastened to the magnetic element (103) of the flat bar (102) by its rear layer (108), using magnetic force. The rear layer (108) comprises a plurality of segments (110), which each contain a ferrous material, and the segments (110) are spaced apart and uncoupled from each other in the longitudinal direction (L) of the flat top strip (104).