36results about How to "Controllable number" patented technology

The invention provides a preparation method of tensile transparent conductive membrane material. Concretely, the invention employs an emulsion method to arrange metal nano wires of high draw ratio, in order to construct an ordered tensile transparent conductive network structure, and solve a caking problem of polymer, thereby the ordered grid structure of the metal nano wires is controllable, and can not be destroyed in a stretching state, and can be combined better with polymers. The light transmittance of the metal nano wire grid is 50-90%, and the diamond resistor is 10-100 ohm / sq, and the number of wire in a grid controllable, and the size of a unit grid is controllable between 50-500 nm; the membrane material can be stretched for more than 1000 times, and the elongation is 5-150%, and the rate of conductivity change is 5-50%.

The present invention relates to fluorescent silica microball containing cadmium telluride fluorescence quantum point(s). By using the mixture of water soluble cadmium telluride fluorescence quantum point and ammonia water as oil phase and non-ionic surfactant as emulsifier to form reverse phase micro emulsion and through one-step reaction of hydrolyzing siloxane at room temperature, fluorescent silica microball in core-shell structure is first obtained; and through further deposition and separation, silica microball with cadmium telluride fluorescence quantum point is obtained. Controlling the experiment condition can obtain fluorescent silica microball of particle size adjustable in 30-100 nm, and altering the type of siloxane or adding cationic polyelectrolyte can obtain fluorescent silica microball with several cadmium telluride quantum points, the number of which is controlled by means of changing the amount of the cationic polyelectrolyte.

The invention relates to a polymer-base carbon nanotube dispersing auxiliary, a synthesis method and application thereof. The polymer-base carbon nanotube dispersing auxiliary is an amorphous polystyrene homopolymer with the function of pyrene, wherein the structural formula is a polymer that one end of the polystyrene main chain is sealed by 0.9-1.05 pyrene units, the number-average molar mass ranges from 5000 to 30000, and the molecular weight distribution index ranges from 1.10 to 1.21. The polymer-base carbon nanotube dispersing auxiliary is synthesized by an anion polymerization method, reactivity pyrene-containing compound is added in the later period of living polymerization of the styrene, and the reaction is terminated with methanol at the end of polymerization. The polymer-base carbon nanotube dispersing auxiliary can remarkably improve the dispersing ability in the normal organic solvent, and even carbon nanotube dispersing liquid with high concentration can be prepared. The dispersing liquid can be used for preparing styryl polymer (polystyrene or styryl copolymer) / carbon nanotube composite material of the carbon nanotube evenly dispersed in the matrix resin.

The invention belongs to the field of pharmaceutical preparations, and relates to preparation of a novel target nano carrier and application of the novel target nano carrier in a camptothecin drug targeting delivery system. The system can be represented as PAMAM-HA / drug, wherein PAMAM is polyamide amine-amine arboraceous macromolecules of different generations, HA is hyaluronic acid of different molecular weights, and the drug is one or more of camptothecin anticancer drugs such as camptothecin, 10- hydroxycamptothecine, topotecan and the like. The carrier is used for wrapping the camptothecin drugs, and has the actions of prolonging the drug blood circulation time, improving the drug bioavailability, reducing the non-tumor part concentration of the drug, reducing the drug cytotoxicity, and simultaneously protecting the lactonic rings of the camptothecin drugs from damage, thereby improving the tumor treatment efficiency from multiple aspects. The nano carrier provided by the invention has important significance in promoting the safe delivery of the camptothecin drugs and the effective treatment of tumor.

The invention discloses a device for efficiently preparing superfine spherical metal powder with a high melting point. The device comprises a shell, and a crucible and a powder collecting area which are arranged in a chamber of the shell, and is characterized in that a plurality of melting pools with the same volume are formed inside the crucible, and gaskets with small holes which are communicated with the chamber are fixed at the bottoms of the melting pools; a transmission rod comprises transmission support rods with the number the same as that of the melting pools, and the bottoms of the transmission support rods are aligned with circular holes in the gaskets with small holes; a thermocouple is arranged inside the crucible, and an induction heater is arranged outside the crucible; and the powder collecting area comprises a rotating disk which is used for atomizing metal droplets and is arranged at the bottom of the chamber and connected with a motor, and a collecting tank is also formed in the bottom of the chamber. The invention also discloses a method for efficiently preparing superfine spherical metal powder with the high melting point. By mainly combining a pulse micropore injection method with a centrifugal atomization method, the method can be used for preparing superfine spherical metal powder which is narrow in particle size distribution interval, high in sphericity, good in spreadability and liquidity, and high in production efficiency, and meets the 3D printing and using requirements.

The invention discloses a preparation method of fullerol. The preparation method comprises the following steps: (1) dissolving fullerene in an organic solvent, wherein the organic solvent is selected from an organic matter which is higher than water in relative density, immiscible with water and can dissolve fullerene; then, respectively putting fullerene C2n which is dissolved in the organic solvent, a hydroxylation reagent aqueous solution with appointed concentration and a phase transfer catalyst into a reactor and layering, wherein a water phase is in the upper layer while the organic solvent in the lower layer; (2) opening a reaction system without isolating air, and after continuously stirring for 10-72 hours at room temperature, stopping reaction; (3) separating liquids, after washing the organic solvent with water, recovering for later use, and recovering the solvent from the water phase to obtain a cured fullerol coarse product; and (4) refining the fullerol coarse product to obtain solid pure fullerol. The synthetic process disclosed by the invention is simple, efficient, convenient to operate and easy for scaled production, and the prepared fullerol shows a good electron paramagnetic spinning property.

The invention discloses a hydro-viscous drive test device with the friction plate number and oil film thickness controllable. The hydro-viscous drive test device comprises an upper box, a lower box, a driven disk, a driving disk, a driving friction plate and a driven friction plate. The hydro-viscous drive test device is characterized in that a supporting disk is added among the driving disk, the driving friction plate and the driven friction plate, four bolts are circumferentially welded on the supporting disk at equal intervals and locked by four lock nuts, meanwhile, gaskets with different thickness can be added between the supporting disk and the driving disk to change the clutch mounting space in a clutch, the friction plate group number is controllable, the four bolts are controlled to move horizontally, and the size of an oil film is controlled by changing the space in the clutch. The device is applicable to test research on the hydro-viscous drive technology and is simple in structure and good in sealing performance.

The invention relates to a method for preparing a constructed body from a biobrick containing endothelial cells, belonging to the technical fields of biology, regenerative medicine, biological printing (e.g., 3D biological printing), tissue engineering, etc. Particularly, the invention relates to a biobrick applicable to biological printing (e.g., 3D biological printing) and tissue engineering, a composition (e.g., biological ink) including the biobrick, a preparation method and application of the biobrick and the constructed body (e.g., a three-dimensional constructed body) including the biobrick or constructed by using the biobrick / biological ink. The biobrick comprises cells, a core wrapping cells (e.g., endothelial cells), and a shell encapsulating the core.

The present invention relates to fluorescent silica microball containing cadmium telluride fluorescence quantum point(s). By using the mixture of water soluble cadmium telluride fluorescence quantum point and ammonia water as oil phase and non-ionic surfactant as emulsifier to form reverse phase micro emulsion and through one-step reaction of hydrolyzing siloxane at room temperature, fluorescent silica microball in core-shell structure is first obtained; and through further deposition and separation, silica microball with cadmium telluride fluorescence quantum point is obtained. Controlling the experiment condition can obtain fluorescent silica microball of particle size adjustable in 30-100 nm, and altering the type of siloxane or adding cationic polyelectrolyte can obtain fluorescent silica microball with several cadmium telluride quantum points, the number of which is controlled by means of changing the amount of the cationic polyelectrolyte.

The invention discloses a preparation method and application of a vascular plant based porous oxidative polymerization chelating adsorption material. The adsorption material takes a porous vascular plant as the carrier, and is grafted with a lot of amidoxime groups. The preparation method includes: subjecting the vascular plant to oxidation treatment, then conducting coupling with a double-bond equipped silane coupling agent, then carrying out free radical polymerization reaction with acrylonitrile under the action of an initiator, and finally converting part of a nitrile group into an amidoxime group through hydroxylamine, thus obtaining the adsorption material. The adsorption material has strong hydrophilicity, abundant porous structure and numerous amidoxime groups, and can be applied to removal of heavy metals or radioactive metallic elements from wastewater. The adsorption material shows the characteristics of high adsorption capacity, strong adsorption ability, reproducibility and reusability, and good reuse effect, and is especially suitable for adsorption removal of lead, cadmium, uranium and other metals from wastewater.

The invention relates to the technical fields of biology, regenerative medicine, biological printing (e.g., 3D biological printing), tissue engineering, etc. Particularly, the invention relates to a biobrick applicable to biological printing (e.g., 3D biological printing) and tissue engineering, a composition (e.g., biological ink) including the biobrick, a preparation method and application of the biobrick and a constructed body (e.g., a three-dimensional constructed body) including the biobrick or constructed by using the biobrick / biological ink. The biobrick comprises cells, a core wrapping cells (e.g., endothelial cells), and a shell encapsulating the core.

The invention relates to an MQ resin based organic silicon surfactant and a preparation method thereof. The surfactant is in a core-shell structure with a Q portion namely a SiO2 core and an M portionnamely a shell layer containing hydrophobic and hydrophilic functional groups. The preparation method includes steps: 1) hydrogen-containing MQ resin synthesis; 2) hydrosilylation, to be more specific, grafting a double-bond-containing hydrophobic and / or hydrophilic compound on the MQ resin surface. Compared with a traditional organic silicon surfactant based on linear polydimethylsiloxane, the MQ resin based organic silicon surfactant has the advantage of excellent water resistance. Due to the special core-shell structure, advantages of a molecular surfactant and a solid particle stabilizerare combined, so that emulsifying effects and long-term stability of emulsion are improved. By control of grafting quantity of the surface hydrophobic and hydrophilic compound, amphipathicity of the surfactant can be systematically regulated. The novel surfactant can be used for stabilization of various oil-water emulsions and can serve as a foam stabilizer for polyurethane foam plastic.

The invention discloses a design method of a V-shaped beam mask plate. The method comprises the following steps: (1) derivating an electric field expression formula Vpepsilon of a V-shaped beam basedon an accurate orthogonality solution of a space paraxial wave equation in an oval coordinate system; (2) solving an angular function by virtue of the electric field expression formula Vpepsilon, so as to obtain angle(Vpepsilon), and combining with blazed grating P0, so as to obtain angle(Vpepsilon)+P0; and (3) carrying out computer coding by virtue of a computer-generated holography principle, soas to obtain a specific expression formula (shown in the description) of a re-transmittance function of the V-shaped beam mask plate, wherein a mask plate described by the re-transmittance function is the V-shaped beam mask plate. The mask plate disclosed by the invention is capable of emitting a V-shaped beam including V-shaped pedals; the number of the V-shaped pedals can be controlled and is twice of an order p; the optical structure is remarkably simplified; and therefore, the mask plate has very important application prospects in a cell sorting technique.

The invention discloses a preparation method of a deuterated chemical. The method includes subjecting a halohydrocarbon compound and a deuterium source to dehalogenation and deuteration reactions under the co-catalysis of an electric field and a catalyst to obtain the deuterated chemical, wherein the deuterium source is one or more of deuterated water, a deuterated alcohol compound and a deuterated acid compound. The environmentally friendly and cheap deuterated water or deuteration agents are adopted as the deuterium source, in place of deuterium gas, and the fixed-point selective deuterationreaction of the halohydrocarbon is achieved under mild conditions under the function of electro-catalysis. Compared with the traditional deuteration reactions, the method has higher selectivity, milder reaction conditions, and more economic applicability, and is suitable for large-scale production of deuterated chemicals.

The invention relates to the technical fields of biology, regenerative medicine, biological printing (e.g., 3D biological printing), tissue engineering, etc. Particularly, the invention relates to a biobrick applicable to biological printing (e.g., 3D biological printing) and tissue engineering, a composition (e.g., biological ink) including the biobrick, a preparation method and application of the biobrick and a constructed body (e.g., a three-dimensional constructed body) including the biobrick or constructed by using the biobrick / biological ink. The biobrick comprises cells, a core wrapping cells (e.g., endothelial cells), and a shell encapsulating the core.

The invention relates to the technical fields of biology, regenerative medicine, biological printing (such as 3D biological printing), tissue engineering and the like. Particularly, the invention relates to a biological brick which can be used for biological printing (such as 3D biological printing) and tissue engineering, a composition (such as biological ink) containing the biological brick, a preparation method and application of the biological brick, and a structure (such as a three-dimensional structure) containing the biological brick or constructed by using the biological brick / biological ink, wherein the biological brick comprises cells, a core layer wrapping the cells (such as endothelial cells), and a shell layer packaging the core layer.

The invention discloses a portrait image generation method and device, a readable medium and electronic equipment, and is applied to the field of image generation. By controlling the target noise vector input into the network unit of the generator, the feature quality of the generated portrait image library is qualified, the richness is sufficiently generalized, and the number is sufficiently sufficient. Specifically, the method comprises the following steps: acquiring a plurality of random noise vectors; carrying out nonlinear transformation on the plurality of random noise vectors to obtaina plurality of target noise vectors, wherein the plurality of random noise vectors are in one-to-one correspondence with the plurality of target noise vectors; according to the multiple target noise vectors, obtaining multiple sets of vector sequences, wherein the number of the target noise vectors contained in each set of vector sequence is n, the target noise vectors contained in different vector sequences are different, and n is a positive integer larger than or equal to 2; and generating a plurality of human image images based on the plurality of groups of vector sequences, wherein the plurality of groups of vector sequences are in one-to-one correspondence with the plurality of human image images. Specifically, the method is applied to a scene of generating a portrait image.

The invention discloses a limonene-based polyurethane with high water resistance and toluene resistance, which comprises the following components in parts by weight: polyisocyanate: 21.2-46.3 parts; limonene-based branched polyol: 53.3-77.9 parts; organotin catalyst: 0.3 parts ~1 part; organic solvent: 25~60 parts. Dissolving limonene-based branched polyol and polyisocyanate in an organic solvent, adding an organotin catalyst, mixing evenly, and vacuum drying at 30-150° C. for 2-6 hours to obtain the product. The present invention utilizes the activity difference between the double bond in the limonene ring and the double bond outside the ring to prepare limonene-based branched polyols with different functionalities through a two-step mercapto-ene addition reaction, and then react with polyisocyanate to convert the limonene structure A large amount of alicyclic six-membered rings are introduced into the main chain of polyurethane, and the resulting polyurethane has good mechanical properties and water and solvent resistance. The preparation method of the invention is simple and the reaction conditions are mild.

The invention discloses a screening and separate storing system for an electrically-controlled rice precision hole direct sowing machine. The system comprises a count sensor, a main through pipe, a hole grain screening mechanism and a separate storing mechanism; the hole grain screening mechanism is installed at the lower end of a shell of the count sensor and composed of an outer shell, a screening stepping motor and screening blades, a collecting pipe is installed on one side face of the outer shell of the hole grain screening mechanism, and the collecting pipe leads to a collecting box; the separate storing mechanism is composed of an outer shell, a separate storing stepping motor and separate storing blades, the separate storing mechanism is installed at the lower end of the outer shell of the hole grain screening mechanism, and an upper end opening of the separate storing mechanism receives qualified rice grains from the hole grain screening mechanism. According to the screening and separate storing system for the electrically-controlled rice precision hole direct sowing machine, the problems that hole grains are not uniform, and empty holes exist are solved, the number of sown rice grains is controllable, and preparation is made for downward sowing.

The invention provides a nano-electronic device mounting method. The nano-electronic device mounting method comprises the following steps: establishing a circuit system for mounting a nano-electronic device, wherein high-low-frequency current of a high-low-frequency alternating current power supply is connected with one end of a microelectrode pair through a switch after the high-low-frequency current is superposed by an adder, the other end of the microelectrode pair is connected with a filter circuit for filtering unused high-frequency wavebands, an I / V conversion circuit converts current signals into easy-to-detect voltage signals, an A / D conversion circuit performs A / D conversion circuit, a phase-locked amplifier recognizes required signals, and meanwhile, a computer is used for monitoring the signals and an intelligent and controllable mounting process is achieved through on and off control of the switch; mounting nano materials with the certain amount on the microelectrode pair; bonding a mounted electronic device by utilizing high-frequency ultrasonic energy. According to the nano-electronic device mounting method, the amount of the nano materials mounted on the electronic device is controllable, and the contact between the mounted nano materials and the microelectrode pair is reliable.

The invention discloses a method for data transmission by using multivariate polar codes. probability, the upper limit of the error probability of the combined multiple channels is obtained; the K channels with the smallest upper limit of the error probability in the combined multiple channels are used to transmit information bits; The number is controllable, so that the complexity of coding during data transmission can be controlled. Since multi-polar codes are used, information loss during high-order modulation and demodulation can be reduced.

The invention discloses a preparation method and application of a vascular plant based porous oxidative polymerization chelating adsorption material. The adsorption material takes a porous vascular plant as the carrier, and is grafted with a lot of amidoxime groups. The preparation method includes: subjecting the vascular plant to oxidation treatment, then conducting coupling with a double-bond equipped silane coupling agent, then carrying out free radical polymerization reaction with acrylonitrile under the action of an initiator, and finally converting part of a nitrile group into an amidoxime group through hydroxylamine, thus obtaining the adsorption material. The adsorption material has strong hydrophilicity, abundant porous structure and numerous amidoxime groups, and can be applied to removal of heavy metals or radioactive metallic elements from wastewater. The adsorption material shows the characteristics of high adsorption capacity, strong adsorption ability, reproducibility and reusability, and good reuse effect, and is especially suitable for adsorption removal of lead, cadmium, uranium and other metals from wastewater.

The invention relates to a medical field, and discloses a method for co-preparing plant oil-based isocyanate by a mercapto-alkene click reaction and a Curtius rearrangement reaction, comprising: (1) preparation of plant oil-based polyprotic acid, (2) preparation of plant oil-based acyl chloride, and (3) preparation of plant oil-based acid azide and isocyanate, to obtain a target product. Aiming at disadvantages of the current plant oil-based isocyanate preparation technology, the invention provides a preparation method of plant oil-based isocyanate with simpleness, easy operation, controllable NCO number and high reaction yield.

The invention provides a specific metal nanowire. The specific metal nanowire comprises a linear nanowire matrix, an isolating layer and a binding body, wherein the binding body is used for being coupled with a single DNA molecule, the isolating layer coats the outside surface of the nanowire matrix, and the top end of the nanowire matrix is connected with the binding body. The invention further provides a method for producing the specific metal nanowire. According to the method, the drawbacks that most existing single molecule manipulation techniques can only be used for binding a large amount of DNA single strands but cannot be used for capturing single DNA in a DNA sequencing process and a technique which can be used for controlling a single DNA single strand to pass through a nanoporerequires perforation and is high in production cost are overcome, a target of controlling a single DNA single strand to pass through a nanopore is achieved, a perforation step is omitted, facility requirements are reduced, and the production cost is low.

The invention discloses a hydro-viscous drive test device with the friction plate number and oil film thickness controllable. The hydro-viscous drive test device comprises an upper box, a lower box, a driven disk, a driving disk, a driving friction plate and a driven friction plate. The hydro-viscous drive test device is characterized in that a supporting disk is added among the driving disk, the driving friction plate and the driven friction plate, four bolts are circumferentially welded on the supporting disk at equal intervals and locked by four lock nuts, meanwhile, gaskets with different thickness can be added between the supporting disk and the driving disk to change the clutch mounting space in a clutch, the friction plate group number is controllable, the four bolts are controlled to move horizontally, and the size of an oil film is controlled by changing the space in the clutch. The device is applicable to test research on the hydro-viscous drive technology and is simple in structure and good in sealing performance.

The invention relates to a preparation method of a core-shell structure, namely, a biological brick for biological printing (such as 3D biological printing) and tissue engineering. The method comprises the steps as follows: a) providing a hydrophobic surface, preferably, a super-hydrophobic surface; b) dropping a core material solution to the hydrophobic surface in step a) to form a droplet so as to obtain a core-shell structure on the innermost side; c) optionally, dropping the core material solution to the formed droplet surface to obtain another core-shell structure; d) optionally, dropping a wall material solution to the formed droplet surface to obtain a shell structure; e) optionally, repeating step c) and / or step d) one or more times or alternately performing step c) and step d) one or more times; f) dropping the wall material solution to the formed droplet surface to obtain a shell structure on the outermost side, wherein the core material or wall material contained in each core or shell is selected independently.