348results about How to "Meeting urgent needs" patented technology

Described herein are bioprinters comprising: one or more printer heads, wherein a printer head comprises a means for receiving and holding at least one cartridge, and wherein said cartridge comprises contents selected from one or more of: bio-ink and support material; a means for calibrating the position of at least one cartridge; and a means for dispensing the contents of at least one cartridge. Further described herein are methods for fabricating a tissue construct, comprising: a computer module receiving input of a visual representation of a desired tissue construct; a computer module generating a series of commands, wherein the commands are based on the visual representation and are readable by a bioprinter; a computer module providing the series of commands to a bioprinter; and the bioprinter depositing bio-ink and support material according to the commands to form a construct with a defined geometry.

The embodiment of the invention discloses a data transmission method. The method comprises the following steps: acquiring collected audio-video data, and performing coding compression on the audio-video data; performing segmenting packetization on the audio-video data subjected to coding compression according to a preset segmenting packetization strategy; allocating data packets to communication links, respectively corresponding to a plurality of configured wireless communication modules, for transmission, wherein at least two communication links corresponding to thewireless communication modules adopt different mobile telecommunication networks for communication; and acquiring network bandwidth information of each communication link in real time, adjusting allocation of the data packets in real time and / or adjusting coding parameters for coding the audio-video data in real time to adjust the code rate of the audio-video data subjected to coding compression. Through adoption of the method, a problem of live broadcast lag phase or failure caused by the fact that the possibility of communication blind zones and poor signals is high when the mobile telecommunication networks are used for audio-video live broadcasting in the prior art is solved, and urgent needs of outdoor live broadcasting and mobile live broadcasting operations are met.

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 robot scene self-adaptive pose estimation method based on RGB-D camera. scene two-dimensional color image information of adjacent frames and space depth information corresponding to pixels of the two-dimensional color image are acquired based on a RGB-D camera; when the two-dimensional color image feature points are sufficient, ORB operators are adopted to extract features, the matching strategy provided by the invention is adopted to carry out accurate matching, and three-dimensional pose estimation is solved based on the pose estimation algorithm of the matching feature points; when the feature points are insufficient, the improved ICP algorithm provided by the invention is adopted to solve the three-dimensional pose estimation; then, a complete switching criterion is designed to fuse the two pose estimation methods; finally, pose estimation obtained through the two methods is optimized through a light beam adjustment algorithm, and finally smooth and accurate three-dimensional pose estimation is obtained. The three-dimensional pose estimation algorithm has the outstanding advantages of high robustness, high precision, small calculation amount, adaptability to different scenes and the like.

The invention discloses a refrigerator with a humidity chamber. The refrigerator with the humidity chamber comprises a box body; a refrigerating chamber and a freezing chamber are arranged at intervals in the box body; the humidity chamber, which is of a sealing structure relative to the refrigerating chamber, is arranged in the refrigerating chamber; the humidity chamber can adjust the humidity according to different demands, so as to form a drying chamber with the drying function or a humidity maintaining chamber with the humidity maintaining function; the drying chamber and the humidity maintaining chamber can be switched; when drying, the humidity chamber is in air communication with the freezing chamber, and thus the humidity chamber serves as the drying chamber with the drying function; when maintaining the humidity, the humidity chamber serves as the humidity maintaining chamber with the humidity maintaining function. With the adoption of the refrigerator with the humidity chamber, the humidity maintaining environment is provided for keeping foods like vegetables and fruits fresh and storing the foods; in addition, the low-humidity drying environment which is beneficial for the storage of tea, cigarette and other dry goods can also be provided, and as a result, the active demand of a consumer can be met.

The invention discloses a motion estimation method based on image features and three-dimensional information of a three-dimensional visual system. The method includes the first step of obtaining two-dimensional image information and space three-dimensional information corresponding to two-dimensional image pixels in real time on the basis of the three-dimensional visual system, the second step of controlling collection intervals between adjacent frames through the adoption of an adjacent frame sampling interval self-adaptive regulation method and automatically regulating the sampling intervals of the t+1 moment relative to the t moment according to the dot pair number of the effective matching image features between the frame at the t-1moment and the frame at the t moment, and the third step of synthesizing two-dimensional scene image features and three-dimensional point cloud information and carrying out three-dimensional motion estimation according to the matching point pair number of the current two-dimensional image features of the adjacent frames to obtain high-precision three-dimensional motion estimation. Through the method, on the basis of satisfying accuracy and reliability of the three-dimensional estimation, the calculated amount is effectively reduced, and the method has the advantages of being less in calculated amount, small in limitation to an application scene and the like.

The invention discloses a novel dental prosthesis CAD / CAM / SLM-3D printing compound method. The method comprises the steps that a CAD / CAM / SLM-3D printing compound system which is composed of an optical scanning measuring instrument or a contact type scanning measuring instrument, computer-aided design software of a dental prosthesis, a miniaturized metal 3D printer and a numerical control milling machine is adopted to prepare a metal prosthesis, an existing dental CAD / CAM system is combined with a metal 3D printing technology, respective numerical control machining methods are organically combined, and the effect is extremely achieved. The automated production efficiency of the dental metal prosthesis, especially the complex dental metal prosthesis is greatly improved, traditional cumbersome processes for manually making a dental prosthesis are omitted, the making quality and stability of the prosthesis are improved, the purpose of rapid, accurate and personalized making is achieved, and the urgent needs of patients missing teeth are well met.

The security authentication method includes following steps: (1) through client end, user sends data to be signed to server end; (2) server end returns information to be authenticated to client end, and the said information is displayed at client end in logic mode; (3) user recognizes the said information, and validates whether the content of the information to be authenticated is collect; if yes, user initiates physical authentication operation, carries out digital signature on the data at client end, and sends it to server end, otherwise, canceling the authentication operation. Features are: low cost, high security, being suitable to online interactive system such as network shopping, bank service, and reporting tax through network.

The invention discloses a preparation method of titanium alloy powder for 3D printing, and belongs to the technical field of 3D printing / material additive manufacturing. The method comprises the specific steps that raw materials are loaded and clamped after being treated; pre-vacuum-pumping treatment is carried out on a smelting chamber and an atomization furnace, and high-purity argon is introduced into the smelting chamber and the atomization furnace when the vacuum degree reaches 10<-5>-10<-3> Pa; a gate valve is opened, a feeding mechanism is turned on, and bar materials are heated at the temperature of 1550-1700 DEG C; metal molten drop or liquid flow is atomized through a supersonic speed tight coupling gas atomization nozzle, and finally screening is carried out. The preparation method has the advantages that impurities introduced in the smelting and atomization process can be effectively reduced, and it is ensured that power oxygen content is controlled to be below 200 ppm; continuous production can be carried out after bar materials are replaced, and the powder is uniform in granularity, good in degree of sphericity and good in flowability.

The invention relates to a process for casting a wear-resistant hammer head, in particular to a process for casting the wear-resistant hammer head by compounding two kinds of metal liquid. A method for synchronously smelting and pouring the two kinds of metal liquid, and molding by using a stripping plate molding machine is adopted. The process comprises the following steps of: manufacturing a mold, a core box, a sand core and the stripping plate molding machine, molding, smelting, pouring, opening the box for cleaning, and performing heat treatment. The hammer head cast by the process has the characteristics of high toughness, strength and wear resistance, the conditions of cracking and falling-off of a hammer handle and the hammer head can be avoided, and wear resistance is high; the stripping plate molding machine is convenient and easy to use, a casting mold is standard, production efficiency is high, and production cost is low; meanwhile, multiple purposes can be achieved, and hammer heads of multiple specifications can be provided for users.

The invention provides a camphor tree sesame fruiting body cultivation method which comprises the following steps: culture media containing leaven are taken for fermentation for 3 to 30 days under the temperature of 5 to 35 DEG C; saw dusts are added into the culture media after fermentation and stirred; the saw dusts and the culture media are arranged inside a vessel; the vessel provided with the saw dusts and the culture media is sterilized; camphor tree sesame spawns are taken to be inoculated into the vessel containing the saw dusts and the culture media and cultivated into mycelium under the temperature of 5 to 35 DEG C; saw dusts containing the camphor tree sesame mycelium are inoculated to a bed wood; the bed wood which has been inoculated with the spawns is cultivated under the temperature of 5 to 35 DEG C and in the humidity of 65 to 85 percents; after residual saw dusts on the bed wood are removed, the bed wood is cultivated under the temperature of 15 to 35 DEG C and in the humidity of 80 to 98 percents for a period of time, and a camphor tree sesame fruiting body can be formed. The invention also provides a cultivation method for camphor tree sesame mycelium and the camphor tree sesame fruiting body obtained by cultivation according to the method. The camphor tree sesame fruiting body cultivated by the invention has the characteristics of massiness of the fruiting body and content of triterpene close to wild camphor tree sesame.

The invention provides a fast big tree grafting method of rare flowers and trees in the field of agriculture and forestry. The grafting method is mainly characterized by: choosing a trunk or a branch of a normal big tree as a rootstock, transplanting more than one variety of seedlings of rare flowers and trees to the root part of the rootstock, not cutting the trunk or top branch, connecting the trunk or top branch to the trunk or branch of the rootstock, taking nursing measure, and forming a big tree of the rare flowers and trees quickly. The engrafting rate is improved, the adaptability is strong, and the price is higher than that of the tree seedlings of the same variety, and the method can form one variety with one tree, so as to breed multiple rare flowers and trees, thus satisfying the social demand and having obvious economic benefit and social appreciation value.

The invention discloses regenerated green planting soil. The regenerated green planting soil comprises 10 to 20 mass percent of sludge, 70 to 85 mass percent of building waste soil, 10 mass percent of broken stone and 5 mass percent of grass carbon. The invention also discloses a production method of the regenerated green planting soil. The production method comprises the following steps of: sorting and crushing building garbage; mixing and stirring according to the mixing proportion; performing chemical examination; and placing the materials into bags. The regenerated green planting soil and the production method thereof have the advantages of solving the problem of environmental pollution, also remitting the problems of shortage of natural resources such as soil erosion, soil desertification, soil salinization and the like, accordance with the conventional environment-friendly subject, making soil become renewable energy and improving production and living environment of human beings due to recycling of the building garbage. No fermentation process occurs in the cultivation of regenerated green planting soil, so the aim of environment friendliness is fulfilled.

The invention relates to method for manufacturing antistatic ray-proof worsted fabric, which successively comprises the following steps: firstly, carrying out the cleaning treatment and the sizing and film mulching treatment to rust-less steel fiber, secondly, blending by selecting treated rust-less steel fiber with wool, polyester fiber, bamboo fiber, tenel, modal fiber or spun silk, manufacturing mixed sliver with homogeneous mix, thirdly, spinning the mixed sliver and obtaining the worsted spinning yarn, fourthly, warping, weaving and obtaining the grey fabric, fifthly, carrying out birth repairing, dyeing and finishing and post-processing to the grey fabric, namely obtaining the antistatic ray-proof worsted fabric, wherein the materials feeding proportion by weight of the wool, the polyester fiber, the bamboo fiber, the tenel, the modal fiber, the spun silk, viscose or cashmere are respectively that the rust-less fiber 15-45 parts, the wool 45-75 parts, the polyester fiber 5-50 parts, the bamboo fiber, the tenel, the modal fiber, the spun silk, the viscose or the cashmere 5-20 parts. The method of the invention selectes length and fineness of the rust-less fiber and carries out the prophase film mulching treatment to the fiber, which enables the performances of the fiber is suitable for the requirements of the worsted process and enables the fiber to achieve the goal of being applied at high proportion.

The invention relates to a method and a system for treating a plurality of electronic texts containing same keywords and is implemented by a computer. The invention includes the following steps: obtaining a plurality of electronic texts containing same keywords, stipulating the word quantity contained in an adjacent word segment and the intercepting method of the adjacent word segment, according to whether the adjacent word segment of the keyword in each text content of part of or whole text is same with other texts or not, classifying the text and other texts into the same or different subclasses or classes which are subject to same or different processing. The massive searching results obtained by keyword search can form multilevel subset systems, catalogs or example sequences, core contents of which are not repeated or lost; therefore, the invention can help users to narrow searching range rapidly and strictly, and to obtain the expected searching results completely and accurately.

The invention relates to a preparation method for a hyperbranched polymide film with the low dielectric constant. A series of the low-dielectric constant PI films with a hyperbranched structure are synthesized by taking 2,4,6-triaminopyrimidine (TAP) as a branching center through a one-step method. Through introduction of the hyperbranched structure, the dielectric constant of the PI film is significantly lowered, the inherent advantages of PI are better kept, and the good mechanical strength and thermo-oxidative stability are supplied to the film. The hyperbranched structure contains a large quantity of molecular chain end groups, dense packing of molecular chains is effectively inhibited, and therefore the hyperbranched PI film has the excellent dissolution characteristic to be more prone to be processed into a complex device. Compared with a Kapton standard film which is generally used at present, under the same testing conditions, the dielectric constant of the hyperbranched PI film prepared through the method is lowered by 20%-40%, the lowest dielectric constant even gets close to 2.0 and reaches the ultralow dielectric constant level, and the urgent demand for micro-electronic industry development in future can be met.

The invention discloses a new whitening and freckle eliminating agent for use in cosmetics, which contains the following components: 1.0 to 6 percent of glutathione, 10 to 25 percent of liquoric root extract, 10 to 25 percent of tonka bean extract, 1.0 to 10 percent of turmeric, 3.0 to 15 percent of vitamin C(VC)-ethylether, 0.5 to 5.0 percent of intensifier (alpha-lipoic acid and vitamin C ester) and 14 to 55 percent of solvent filling agent. The main freckle eliminating mechanism of the new skin freckle eliminating agent is to inhibit pycocatechol oxidase, prevent melanin from forming by preventing dopa from being oxidized into dopaquinone; the new skin freckle eliminating agent adopts a light wave conversion principle to improve dim complexion; and thus, the new skin freckle eliminating agent has freckle eliminating and whitening effect. Freckle eliminating and whitening products developed by using the whitening and freckle eliminating agent disclosed by the invention have good effects and low toxicity and meet the requirements of China's laws and regulations on cosmetics, overcome the drawbacks of the conventional products and can meet the urgent needs of yellow people with freckles and whitening needs.

The invention belongs to the technical field of low-alloy high-strength steel, and particularly relates to a thick steel plate suitable for large heat input welding in EH420 grade marine engineering and a preparation method of the thick steel plate. The steel plate comprises the following chemical components of, by mass percentage, 0.05-0.12% of C, 0.1-0.3% of Si, 1.0-1.7% of Mn, 0.001-0.01% of P,0.001-0.005% of S, 0.01-0.04% of Nb, 0.005-0.025% of Ti, 0.2-0.5% of Cu, 0.2-0.5% of Ni, 0.001-0.006% of N, 0.001-0.005% of O, 0.005-0.025% of Al, 0.0005-0.005% of Mg, 0.0005-0.005% of Ca and the balance of Fe. Al-Mg-Ti-Ca-Mn-O-S composite inclusions account for more than 10% of inclusions with the sizes of 0.5-5 [mu]m in the steel plate and have special compositions. The steel plate is preparedaccording to the steps of adding silicon and manganese when steel is discharged from a converter, and feeding calcium wires, titanium wires, magnesium wires and aluminum wires during LF and RH refining; and adopting two-stage controlled rolling and controlled cooling. Particles of the inclusions in the steel plate are favorable for fine dispersion and distribution, have a better capability of promoting acicular ferrite nucleation, and can obviously improve low-temperature toughness of large heat input welding.

The invention provides a method, a decoder and a monitoring system for realizing decoder synchronous polling, wherein the method comprises the following steps that: the decoder receives a synchronous polling request sent by a client, and the synchronous polling request carries starting polling time and polling interval time; the decoder acquires polling switching time according to the starting polling time and the polling interval time; the decoder starts to acquire a medium code stream of first front-end monitoring equipment according to the starting polling time, and the decoder is switched to second front-end monitoring equipment in a polling mode when the polling switching time arrives and acquires a medium code stream of the second front-end monitoring equipment; and the decoder decodes the medium code streams, generates a video-audio signal, and transmits the signal to display equipment to play. The method, the decoder and the monitoring system realize that a plurality of the decoders carry out polling play and switch on the media code streams of the front-end monitoring equipment at the same time.

The invention discloses a preparation method of aluminum alloy powder for additive manufacturing, and belongs to the technical field of 3D printing additive manufacturing. The preparation method comprises the steps that impurities in raw materials are removed; a graphite rod is added in a crucible to be roasted at the temperature of 300-500 DEG C; a smelting chamber and an atomization chamber are subjected to vacuum pumping treatment, wherein the vacuum degree reaches 1*10<-4>-1*10<-2> Pa; a heat preservation pot and a tundish are heated; metal liquid flow which perpendicularly drops is broken into small liquid drops through a nozzle with a negative pressure drainage effect under the high pressure of 0.5-6 MPa and high-purity argon, powder is formed through cooling and spheroidizing solidification, and a 5-30 kw high-pressure fan is adopted; and after the temperature is lower than 50 DEG C, screening is carried out under the atmosphere of high-purity argon. The preparation method has the advantages that industrial production can be achieved, the domestic urgent demand for high-performance aeronautical aluminum alloy powder materials is met, and the manufacturing cost is effectively saved.

The invention discloses a robot and method for independently establishing wireless communication network for mine emergency rescue. The robot comprises a robot body and a placing system of wireless communication network repeater. The robot body is provided with a walking mechanism. A driving mechanism, an environment information monitoring unit, a wireless communication unit and a control system are arranged inside the robot. The placing system of wireless communication network comprises a placing device of a wireless communication repeater and a wireless communication repeater. The method includes step 1, detecting and uploading coal mine environment information, communication signal strength and geography information; step 2, analyzing and processing signals; step 3, detecting and uploading wireless communication signal strength of the location of the wireless communication repeater and information about wireless communication signal strength, and step 4, circulating the steps of 1, 2 and 3 to finish wireless communication network establishing. The robot and method are novel and reasonable in design, high in intelligence, convenient in usage and operation can repair and construct coal mine communication network quickly with stable and reliable working and are suitable for promoting and using.

Described herein are improvements to bioprinting technology that facilitate automation of tissue and organ fabrication processes.

Disclosed is an electronic text processing method convenient for query and search, and retrieval or search system of similar contents comparing process device comprising keyword search. The invention makes a comparison among similar contents in the delimitation limit of various text keyword search, determining and classifying similar contents depending on whether which have similarities, so as to perform the executions such as separating subsets, arranging various sequences or forming directories, sorting, displaying interface and the like. The invention can considerably improve the convenience and tightness of information retrieval or network information search.

The invention discloses a synchronous line fixing-moving joint restoration method. The synchronous line fixing-moving joint restoration method has the advantages that a scanning measurer, computer-aided design software of a dental prosthesis, a miniature SLM (synchronous line module)-metal 3D printer and a numerically-controlled milling machine are used for preparing all-ceramic and metal prosthesises, the fixing restoration of removable partial denture butment and the restoration of removable partial denture are synchronously completed, the clinical restoration efficiency of complicated cases is greatly improved, the clinical frequency of a patient is greatly reduced, and the chair-side operation time is shortened; the complicated procedure of traditional dental prosthesis manufacturing method is overcome, the manufacturing quality and stability of the prosthesis are improved, the purpose of quick, accurate and personalized manufacturing is realized, and the urgent demand of patients with tooth lack is well met.

The invention discloses a fiber / metal layer structure composite and a preparation method thereof, and relates to the field of manufacturing of functional composites. The fiber / metal layer structure composite comprises alternate fiber resin layers and metal layers; rubber layers can be further added; repairing agent microcapsules and a catalyst are added in resin; and micron strength enhanced particles can be further added. The preparation method comprises the steps of wetting fibers through resin, so as to prepare the fiber resin layers; carrying out surface treatment on metal sheets, so as to prepare the metal layers; alternately laying the fiber resin layers and the metal layers in a mold cavity; and carrying out heating, pressurization and curing treatment on the layer structures in the mold cavity. According to the fiber / metal layer structure composite, advantages of the fiber resin composite, metals and rubber are combined, the composite has relatively high designability, and the designed material is a functional composite with the prominent characteristics of high specific strength, fatigue resistance, corrosion resistance, high damping, and the like, and meets the urgent requirements of fields like aerospace, national defense, rail transit and automobiles on new materials to a certain extent.

The invention relates to a method for manufacturing antibiotic antistatic bi-stretch worsted fabric, which comprises the following steps: firstly, mixing by selecting polyester group carbon black high conductivity fiber with wool, tenel, modal fiber, spun silk or bamboo fiber, manufacturing mixed sliver with homogeneous mix, secondly, respectively adopting two spinning modes to the mixed sliver and antibiotic PTT, the spinning mode one is that: firstly, spinning the mixed sliver to single-yarn and carrying out the doubling and twisting to the single-yarn by selecting the antibiotic PTT, the spinning mode two is that: carrying out two-component spinning by selecting the antibiotic PTT and the mixed sliver, respectively obtaining two worsted yarn with different structures, thirdly, carrying out yarn steaming to the worsted yarn which is obtained by adopting the two different spinning modes, fourthly, taking the spinning yarn which is obtained by adopting the spinning mode one as warp yarn, warping and sizing, taking the spinning yarn which is obtained by adopting the spinning mode two as weft yarn to use, warping, weaving and obtaining the grey fabric, fifthly, carrying out birth repairing, post-processing and mellowing to the grey fabric, namely obtaining the antibiotic antistatic bi-stretch integrated worsted fabric. The worsted fabric which is manufactured by using the method of the invention has the advantages of gathering the antibiotic, the antistatic and the bi-stretch in integral whole.

The invention relates to a method for regulating and controlling the blooming period, in particular to a method for regulating and controlling the blooming period of peach blossoms. The method comprises the steps of peach blossom bud differentiation habit; measures for promoting peach blossom bud differentiation; bud development control; and medicament transaction. The peach blossom bud differentiation habit comprises a physical differentiation period, a morphodifferentiation period, a dormant period and a sexual cell forming period. The invention breaks natural dormancy of ornamental peach blossoms through a chemical method, and is combined with technical measures of facility cultivation so as to regulate and control the blooming period of ornamental peach blossoms, and provide red multi-petalled ornamental peach blossoms during the spring festival to meet the urgent needs of present markets.

The invention provides an intelligent drying clothes rack for pre-estimating the drying time based on weather forecast data. The intelligent drying clothes rack comprises an acquisition module, a master control module, and a first wireless module, the acquisition module is used for acquiring first weather forecast data, the master control module is used for generating matched second weather forecast data according to the first weather forecast data, generating first feedback information according to the second weather forecast data and a preset database, and sending the first feedback information to the first wireless module, and the first wireless module sends the first feedback information to a user. The invention also provides a method for pre-estimating the drying time based on the weather forecast data. The method includes: acquiring the first weather forecast data, and converting the first weather forecast data to the second weather forecast data; generating the first feedback information according to the second weather forecast data and the preset database; and sending the first feedback information to the user. According to the intelligent drying clothes rack and the method thereof, the drying time can be pre-estimated, and the drying time can be sent to the user.