30results about How to "Guarantee uniformity" patented technology

Multimedia service contents are provided to user terminals in a wireless communication network, such as, a GPRS or UMTS network, by generating delivery packets that convey both the multimedia service contents and a corresponding service logic. These delivery packets are received and interpreted by means of an interpreter at the user terminals (client) to obtain presentation of the multimedia service contents and the interaction level between client and server according to the corresponding service logic. The multimedia contents can thus be presented interactively at the terminal while new services can be designed on the server side and made available to the user terminals without modifications being required on the terminal side.

The invention relates to a dynamically-monitored high-frequency ultrasound atomized nanoparticle preparation system. The system mainly comprises a high-frequency ultrasound nano-atomizing device, a multipoint dynamic nanoparticle particle size and particle shape real-time monitoring device, an efficient laminar-flow electrostatic collecting device, an inert gas circulating and organic solvent recovering device and a software automated-controlling and data integrated-processing module. The equipment can achieve the nano preparation of trace samples, and the yield is extremely high; and meanwhile, the real-time dynamic monitoring device is introduced, and the influence on the quality of nanoparticles caused by each parameter can be monitored timely through a data integration module or software, so that the whole preparation process can be controllable, and the rapid optimization of parameters is facilitated.

The invention discloses a method for detecting aldehydes in rice. According to the method, the method is realized by employing a headspace derived solid phase micro-extraction-gas chromatography-mass spectrometry method. The method comprises the following steps of: grinding a rice sample, adding the detected sample into a headspace bottle, introducing protective gas, inserting an extraction head into the headspace bottle filled with derivative liquid for deriving for 20 minutes, and inserting the extraction head into a headspace sample introduction bottle, wherein the extraction temperature is 40 DEG C, and the extraction time is 80 minutes; detecting in a gas chromatograph-mass spectrometer. The fineness and headspace derivatization conditions of the ground rice particles are optimized, so that newly generated aldehydes in the analysis process are avoided, and the accuracy of an experimental result is improved. According to the detection method, five steps of adsorbing derivative liquid of the extraction head, deriving and extracting the aldehydes, performing sample introduction, separating and measuring can be sequentially finished in a process, automation is realized, the operation is simple, the detection efficiency and accuracy are improved, and absolute quantification of nine aldehydes in rice is realized.

The invention discloses an oxidization repair method for agricultural chemically contaminated soil. The method comprises the following steps of: blending an oxidant and agricultural chemically contaminated soil of which the weigh ratio is 1:2,000 to 1:5,000 at the temperature of 15 to 30 DEG C; adding 10 percent of water and 0.05 to 0.1 weight percent of pH adjuster into the mixture; stirring and blending, wherein the stirring time is 30 to 60 minutes and the pH value is 6 to 9; and placing the mixture on an outdoor open field. At the normal temperature, the oxidant performs continuous slow oxidation and reduction reaction on organics in the contaminated soil, and after 6 to 10 days of reaction, the removal rate of contaminant in the agricultural chemically contaminated soil is up to over 90 percent. The invention provides an effective treatment way to the treatment of the agricultural chemically contaminated soil; the adding amount of medical agents is low; the repair efficiency is high; and secondary harm to environment is not caused in a repair process.

The invention provides a ventilation structure of a sealed household plant growth cabinet and belongs to the field of ventilation structure. The ventilation structure is arranged on the sealed household plant growth cabinet; the sealed household plant growth cabinet comprises planting disks for planting plants and side surfaces connected with the planting disks; the ventilation structure of the sealed household plant growth cabinet comprises an air supply device, an air inlet and an air outlet; the air supply device is arranged at the air inlet of the sealed household plant growth cabinet; the air inlet and the air outlet are respectively formed in two surfaces of the sealed household plant growth cabinet; air flows through the air inlet and the air outlet to form an S-shaped path. The ventilation structure has the beneficial effects that plants can be in balanced ventilation; the uniformity of air compositions, the structural balance practicability and beautiful appearance are ensured, the uniformity of airflow in the plant growth cabinet with multiple layers of planting is ensured, and the plant growth tendency is uniform.

The invention relates to a method for mediating proteins to synthesize and modify a cerium nano material. The method is characterized in that serum protein with certain concentration is mixed with cerous nitrate to prepare a precursor solution of the cerium nano material; the precursor solution has nucleation growth under a potassium hydroxide solution alkaline condition; a reaction temperature and reaction time are further controlled, so that a cerium nano cluster, cerium nano particles and a cerium nano chain material are obtained in a controlled manner, and the cerium nano cluster, the cerium nano particles and the cerium nano chain material have good uniformity, dispersion and stability. Corresponding characterization analysis is carried out on the nano material and the surface thereof, so that BSA or HAS for correspondingly modifying the surface of the cerium nano material has excellent biological compatibility, has a great number of modifying functional groups such as carboxyl and an amino group, and further can graft and modify other functional molecules, and therefore, a foundation is laid for further applying the method in a living body. According to the method, reaction is green and economical, a control way is flexible and easily controlled, and repeatability is strong.

The invention discloses a preparation method of an antibacterial dressing. The preparation method comprises the following steps of weighing the following raw materials, by weight, 25-35 parts of a 15% silver nitrate solution, 10-20 parts of plant fibers, 1-5 parts of polyvinylpyrrolidone, 3-8 parts of an antibacterial precursor and 50-80 parts of deionized water; heating the silver nitrate solution and the plant fibers to 120-130 DEG C, keeping the temperature and reacting for 30 minutes, cooling, washing with deionized water for three times, drying to obtain composite fibers, and cooling to room temperature; preparing the composite fibers into carbonized fibers; and adding the polyvinylpyrrolidone into the deionized water, carrying out magnetic stirring for 30 minutes at the rotating speed of 100-150r/min, preparing a polymer aqueous solution, adding the antibacterial precursor and the carbonized fibers, drying, preparing a primary material, washing for three times, and preparing the antibacterial dressing. The dressing plays an antibacterial effect through the silver ions and the antibacterial precursor, the components are environment-friendly, and residues cannot pollute the environment.

The invention discloses a two-component composite fiber spinning assembly, and belongs to the technical field of composite spinning equipment. The two-component composite fiber spinning assembly comprises a barrel, a spinneret plate, a melt distribution plate, a two-cavity filter barrel and a barrel cover, wherein the spinneret plate is arranged at the bottom of a barrel cavity, and spinneret plate capillary spinneret holes are formed in the spinneret plate; the melt distribution plate is arranged above the spinneret plate in an overlapped mode, melt distribution holes are formed in the melt distribution plate, and a left material collecting cavity and a right material collecting cavity of the melt distribution plate are formed in one side of the melt distribution plate; the two-cavity filter barrel is arranged on the upper portion of the barrel cavity and provided with a left filter cavity and a right filter cavity, a first-component melt filter mechanism is arranged in the left filter cavity, and a second-component melt filter mechanism is arranged in the right filter cavity; and the barrel cover is fixed to the top face of the barrel. The two-component composite fiber spinning assembly is characterized in that the spinneret plate capillary spinneret holes comprise a first-component melt discharging hole and a second-component melt discharging hole of the spinneret plate; themelt distribution holes comprise a first-component melt guide hole, a second-component melt guide hole, a first-component melt annular guide groove and a second-component melt annular guide groove ofthe melt distribution plate; and the first-component melt guide hole and the second-component melt guide hole are formed in the barrel cover. The quality of two-component fibers is guaranteed, the melt leakage probability is reduced, the height is reduced, inspection and protection are facilitated, and the structure is simplified.

The invention provides additive-subtractive-ultrasonic micro-forging-five-axis linkage composite manufacturing equipment. The equipment comprises a laser powder 3D printing additive device, an ultrasonic micro-forging treatment device, a five-axis linkage numerical control subtractive device and a temperature monitoring device. According to the composite manufacturing equipment, under the condition of one-time positioning, through composite manufacturing of the additive device and the five-axis linkage material subtractive device, one-time forming and precise subtractive machining of complex parts can be completed to the maximum extent, the internal structure performance and mechanical properties of the parts are improved through the auxiliary function of ultrasonic micro-forging, meanwhile, the temperature in the machining process is monitored in real time, the machining technology is adjusted in time according to temperature changes, and therefore the uniformity of various properties of the material is guaranteed.

The invention discloses a section bar cast-rolling method and system based on a horizontal cast-rolling mill. The section bar cast-rolling system based on the horizontal cast-rolling mill is characterized in that the cast-rolling mill comprises a smelting furnace, a front chamber, a melt distribution mechanism and a cast-rolling mechanism; the smelting furnace and the front chamber are connected through a connecting mechanism, and melt in the smelting furnace enters the front chamber through the connecting mechanism; the melt in the front chamber flows into the cast-rolling mechanism through the melt distribution mechanism; the cast-rolling mechanism comprises an upper roller (1) and a lower roller (2); the axes of the upper roller and the lower roller are parallel to each other and located on the same vertical plane; molding cavities are formed in the roller surface of the upper roller or the lower roller; in the cast-rolling process, the upper roller and the lower roller are driven by a driving mechanism to rotate; the upper roller and the lower roller are opposite in rotating direction; and the melt is cooled in the cast-rolling mechanism and cast-rolled into section bars, and the section bars are transversely output. The section bar cast-rolling method and system based on the horizontal cast-rolling mill are easy to implement and high in generating efficiency.

The invention relates to a method for synthesizing modified cerium nanometer quantum dots under mediation of hyaluronic acid and a product and application thereof. The method comprises the following specific steps: dissolving hyaluronic acid by adding water, then adding trivalent cerium salt, reacting for 0.5-1h under a magnetic stirring condition to synthesize a precursor, then adding an alkalinesolution into a reaction system, performing a nucleating and curing reaction, and purifying to remove unreacted inorganic ions and the unreacted hyaluronic acid to obtain the hyaluronic acid-coated cerium nanometer quantum dots. By the method, the reaction is environmentally friendly and economical, the regulative way is flexible and easy to control, and the repeatability is strong; the obtainedquantum dots are uniform in shape and size and good in dispersibility and stability; the HA for modifying the surfaces of the cerium nanometer quantum dots has excellent biocompatibility and a large amount of carboxyl functional groups for modifying, so that the HA can further modify other functional molecules in a grafting manner, and a foundation is laid for further in-vivo application of the cerium nanometer quantum dots.

The invention provides astragalus membranaceus and corn stigma composite tea as well as a preparation method and application thereof, and belongs to the technical field of functional drinks. According to the traditional Chinese medicine theory of monarch, minister, assistant and guide, the corn stigma is used as the monarch, the radix puerariae and the radix astragali are used as the minister, the bitter gourd is used as the adjuvant, and the cape jasmine is used as the guide, radix puerariae helps produce saliva and slake thirst and dilate blood vessels; radix astragali can tonify qi and raise yang, benefit defensive qi and consolidate superficies, and induce diuresis to Bitter gourd has the effects of clearing summer-heat and assisting in reducing blood sugar; cape jasmine can purge fire, relieve restlessness, reduce blood pressure and The radix astragali is beneficial for tonifying qi and lifting yang, promoting blood circulation and promoting blood sugar and blood pressure reduction of the corn stigma and the radix puerariae, the balsam pear can assist in reducing blood sugar, the fructus gardeniae can reduce blood pressure, the fructus gardeniae can assist in supplementing blood sugar and blood pressure reduction of the corn stigma, the radix puerariae and the radix astragali, and the blood sugar and blood pressure reduction effects are synergistically achieved.

The invention discloses a corn whole-straw staggered horizontal straw returning planting method in a manner of spacing every two ridges by one empty ridge, and belongs to the technical field of corn planting. The method comprises the following steps that corncobs are harvested, and meanwhile the whole straw is directly covered on the earth surface along ridges until spring sowing without being crushed; straw row collection is carried out 3-5 days before corn sowing, alternative arrangement of to-be-sown planting strips and straw full-coverage strips is formed, the to-be-sown planting strips are sown with seeds in two rows, and the straw full-coverage strips are empty rows and are not sown with the seeds; the position with the distance L1 being 15 cm away from the straw covering edge is selected for starting sowing, two rows of corn are planted, one row of corn is vacated, the row spacing is L2, large and small rows of L2 and 2L2 are formed, no corn whole straw exists in the small row spacing, and the whole straw coverage rate in the large row spacing is 70% or above; the planting row spacing is 2/3 of the traditional row spacing; and in the next year, the planting strips and the coverage strips are exchanged, and staggered straw returning and partial soil fallow crop rotation are achieved. The agricultural machinery operation feasibility is guaranteed while the agricultural technology regulations are met, and deep fusion of the agricultural machinery and the agricultural technology is achieved.

The invention discloses a packaging container for bulk food. The packaging container comprises a barrel body, a barrel cover arranged at the top of the barrel body in a penetrating mode, a sealing structure located between the barrel body and the barrel cover, a coordination assembly and an object containing structure which is movably installed in the barrel body; the sealing structure comprises a gasket fixedly installed on the barrel cover, an extrusion groove formed in the barrel body and corresponding to the gasket, and a cover opening assembly arranged on the gasket; the coordination assembly provides stacking positioning of the barrel body in the vertical direction; and the object containing structure comprises a lining bag, a magnet layer fixedly installed at the position, facing the lining bag, of the barrel body, and a magnet paster fixedly installed at the position, back to the barrel cover, of the lining bag. According to the packaging container, the sealing effect of the overall structure is excellent; the cover is opened in an air leakage cover lifting mode; the structure of the packaging container is simple, operation is labor-saving and safe; the packaging container can be placed orderly and stably; snacks are contained on the basis of the object containing structure fixed through magnetic attraction, the snacks can be matched with the inner space of the container, and the uniformity of the packaging capacity is guaranteed.

The invention discloses a zinc borate 2335 preparation method, and a zinc borate 2335 particle diameter control method. Zinc borate 2335 is prepared from the following raw materials: zinc sulfate, sodium borate, zinc oxide, water, boric acid and sodium sulfate. Concentrations of the boric acid and the sodium sulfate in a system are adjusted, and product particle diameter control is carried out during a cooling stage of the reaction system through slow addition of water at a temperature of 70-95 DEG C and stirring speed adjustments, so that the diameters of zinc borate particles can be selectively controlled between 0.5 mum and 10 mum. Therefore, Uniform particle diameter distributions and standard shapes of products are achieved, and various application demands of the market can be fully satisfied.

The invention discloses a polymer composite material as well as a preparation method and application thereof. According to the polymer composite material, double bonds in polyurethane and thermal oxygen in polyaryletherketone are subjected to oxygen free radical cross-linking polymerization, and are grafted with polytetrafluoroethylene to form staggered macromolecular chains in a net form. The polymer composite material has the advantages of low thermal expansion coefficient, high dimensional stability (media such as water, lubricating oil and the like), conventional solvents such as acid and alkali resistance, high and low temperature resistance, radiation resistance and the like, and can be conveniently prepared into products such as polymer composite material bearings, plates and the like according to actual requirements. The application prospect in the field of high polymer material bearings of ships, hydropower, wind power, nuclear power and the like is very wide.

The invention discloses coating modified anhydrous lithium hydroxide, which comprises an anhydrous lithium hydroxide matrix and a coating layer coating the surface of the anhydrous lithium hydroxide matrix, and the material of the coating layer is selected from one or more of alkane with a carbon atom number of 6-20, an alkane derivative, olefin, alkyne, alcohol, ether or ester. The invention alsodiscloses a preparation method, which comprises the following steps of: (1) adding a coating material into a solvent, and uniformly mixing the substances to obtain a mixed solution; (2) adding lithium hydroxide monohydrate into the mixed solution obtained in the step (1), and uniformly mixing and stirring the substances to obtain a mixture; and (3) drying the mixture obtained in the step (2) to obtain the coated modified anhydrous lithium hydroxide. The surface of the anhydrous lithium hydroxide is coated with the physical coating layer, air can be effectively isolated, and the anhydrous lithium hydroxide has the advantages of low water absorption rate, good particle fluidity and no dust phenomenon, and does not have obvious water absorption and caking phenomena after sealed storage for 60 days.

The invention discloses a multi-target editing vector, which comprises a Cpfl protein expression element and at least two sgRNA transcription elements. The multi-target editing vector realizes the simultaneous editing of different target sites of the genome by co-expressing Cpfl protein and multiple sgRNAs, improves the efficiency of gene editing, reduces the off-target effect of gene editing, and improves the accuracy of gene editing. The present invention also discloses a method for constructing the above-mentioned multi-target editing vector. Through two-step Golden Gate cloning, multiple sgRNAs are serially connected to the second vector with Cpfl protein expression element and fluorescent expression element to obtain the above-mentioned Multi-target editing vectors. The above-mentioned construction method has simple steps, simplifies the experimental design process, and reduces the cost of gene editing. The invention also discloses a kit including the above-mentioned multi-target site carrier, which can be used for co-editing of multi-target sites with high efficiency and low off-target.

The invention relates to the technical field of cable production processes, and discloses a load-bearing detection cable straightening production process, which comprises the following steps that 1) acopper stranded wire is moved into core wire production equipment, the production equipment is kept sealed, air in the equipment is completely exhausted, nitrogen is introduced, and the copper stranded wire is pulled from middle to outside through a machine to be changed into the copper stranded wire with the proper thickness; the invention discloses a straightening production process for a load-bearing detection cable. The method comprises the following steps: step 2) immigration of fine copper wires; straightening and processing are carried out in the straightening equipment; the straightening equipment is used for processing the thickness and the uniformity of the fine copper wires; the overall uniformity of the thin copper wires is ensured; meanwhile, wire drawing oil is sprayed to the equipment at the outlet of the straightening equipment, so that a wire drawing oil protection layer is damaged by the straightening equipment, copper is oxidized, the overall uniformity of internalcopper wires can be guaranteed, the phenomenon that the service life of the equipment is shortened due to local heating is avoided, the conductive efficiency of the cable is effectively improved, andthe service life of the cable is effectively prolonged.