218results about How to "Solution conditions" patented technology

The invention discloses a tax-control safety two-dimensional code encoding and decoding processing method. By means of the method, a tax-control safety two-dimensional code generated through the method has a plurality of levels of tax-control safety protection, anti-counterfeiting and safety performance of the tax-control safety two-dimensional code is improved, electronic signature information carried by the code can serve as a tool carrying out off-line authenticity identification on the condition of separation from the internet, the problem that when electronic bill information is transmitted through the two-dimensional code in the prior art, the authenticity identification is limited by network conditions and time is solved, and tax-control safety of the tax-control safety two-dimensional code is effectively enhanced. The tax-control safety two-dimensional code decoding processing method not only can prevent illegal leakage of useful information in the tax-control safety two-dimensional code, but also can immediately identify authenticity of the electronic bill information contained in the tax-control safety two-dimensional code off-line on the condition that the internet is not relied on, and therefore the tax-control safety of the tax-control safety two-dimensional code during the decoding process is further improved.

The invention provides a mobile ultrasonic anemoclinograph and a method for measuring wind speed and direction, wherein the device comprises an ultrasonic wind speed and direction measuring unit, a mobile system carrier speed measuring unit and a system direction measuring unit; the wind speed and direction measuring unit comprises a base, a control circuit board, six measuring arms and six ultrasonic transmitting/receiving sensors; the measuring arms are connected to the base and in an included angle at 60 degrees in turn; each measuring arm is provided with an ultrasonic sensor; the speed and direction measuring unit of the system carrier comprises a speed sensor and a direction measuring component; simultaneously, the invention further provides a method for measuring the wind speed anddirection in actual environment under a mobile condition by ultrasonic, wherein the method comprises the steps of: measuring the wind speed and direction parameters under the mobile condition by the ultrasonic wind speed and direction measuring unit; combining the measured moving speed and direction parameters of the system carrier; and calculating the measured wind speed and direction parametersin actual environment of the system under a mobile condition.

This invention relates to a route device for increasing service quality of day-base information networks including an input module, an initializing module, a negative computation module, a positive commutation module and an output module. This invention also relates to a route method including: transforming the current network to a first topological structure, transforming the link price of the first topology to generate a second topological structure according to the interruption probability of the link, computing the shortest path based on time delay from the nodes to the destination node in the second topological structure and judge if the time delay value of the shortest path from the destination node to the source node meets the restriction condition, if not, the time delay value of the shortest path from the nodes to the destination node is registered and the shortest path based on link price from the destination node to the source node is computed, judging if the time delay value of said path meets the restriction condition, if so, said path is the optimum one, otherwise, the positive computation program is called to search for the optimum path from the source node to the destination.

The invention discloses a bending torsion test loading device for a steel tube concrete pile. According to the bending torsion test loading device for the steel tube concrete pile, two problems that the bending moment condition is not ideal and simple, and the rotation of the steel tube concrete pile is not ideal when the torque is applied in a previous bending torsion test are solved. The bending torsion test loading device comprises two tension jacks, tension sensors, a connection joint, steel wire ropes, round groove discs, a fixed hinge support, a sliding hinge support, two counterforce pillars and rotation supports, wherein the rotation supports are mounted on the fixed hinge support and the sliding hinge support respectively; the two tension jacks are mounted on the outer sides of the two counterforce pillars respectively and located on different sides of the round groove discs on two ends of the steel tube concrete pile; the top ends of the tension jacks are provided with the tension sensors; the tension sensors are connected with the steel wire ropes which are wound on the round groove discs through connection joints. Due to the adoption of the bending torsion test loading device for the steel tube concrete pile, bending torsion test results of the steel tube concrete pile fit with finite element analysis results well. Meanwhile, the bending torsion test loading device for the steel tube concrete pile also has the characteristics of convenience in assembly and recyclability.

The invention discloses a five-coordinate plunge milling machining method of a closed type integral bladed disc, comprising the steps of: dividing machining areas of a passage of the machined closed type bladed disc; respectively generating passage offset surfaces in an air edge machining area and an air-exhaust edge machining area; solving a boundary line of the passage; generating straight-grain enveloping surfaces of the passage offset surfaces of the closed type integral bladed disc; respectively obtaining plunge milling cutter spacing orbits of the air edge machining area and the air-exhaust edge machining area so as to obtain the plunge milling cutter spacing orbits of the passage of the closed type integral bladed disc; and finally conducting plunge milling on the closed type integral bladed disc on a five-coordinate numerical control machine according to the obtained plunge milling cutter spacing orbits. The invention prevents the cutter interference when the closed type integral bladed disc is machined, solves the technical problems of great programming difficulty, multiple constraint conditions, the complex solving process of the cutter spacing orbits, and the like in the machining process and effectively realizes the five-coordinate plunge milling machining of the closed type integral bladed disc.

The invention discloses a purple sweet potato wine and a preparation method thereof. The purple potato wine with a high anthocyanin content is prepared by preparing purple sweet potatoes into cooked powder, mixing the cooked powder with sesame powder or nut powder, subjecting the powder mixture to enzymolysis by enzymes, liquefying, saccharifying, adding fresh juice, and fermenting with monascus and screened yeast with a plurality of kinds of tolerance. The purple sweet potato wine is a fermented wine prepared by fermentation with a fruit wine process, and maintains original nutrition components of the purple sweet potatoes. The wine is noble in color and luster, mellow, excellent in quality, and rich in the bioactivator anthocyanin and selenium, and is an ideal healthcare drinking.

The invention discloses a method for erecting a large-span lower chord variable truss high continuous steel trussed beam cantilever. Temporary buttresses are adopted in side-span steel beams to assist in semi-cantilever splicing and erection, and main-span full cantilever erection is conducted. The method specifically includes the steps that steel beam lifting stations are arranged at the positions of abutment piers, the temporary buttresses are arranged at the positions of corresponding joints of the side-span steel beams according to the main truss structure stress, the beams are lifted through the lifting stations and transported through a bridge floor, and an upper chord beam erection crane is used for erecting the steel beams joint by joint from the side span to the main span; and in the midspan closure process, the down-warping and the turning angle of the front end of a closure opening are adjusted through an abutment pier beam rising and falling method, and in combination with measures of longitudinal jacking and pulling of the steel beams and the like, the steel beams are closed with the high accuracy. By the adoption of the method for erecting the large-span variable truss high continuous steel trussed beam cantilever, the construction problem of striding over a river without a large-tonnage ship navigation condition and with a navigation requirement is solved.

Provided is a substation wireless data transmission and overhaul management system and method. The substation wireless data transmission and overhaul management system includes a substation data collection module, a substation data transmission module, a substation comprehensive data transmission platform, a VPDN substation data collection remote transmission network, a remote scheduling automation system server and a mobile terminal. The substation wireless data transmission and overhaul management system and method have the advantages that through a wireless technology, a traditional wired transmission mode between substation backgrounds and collection terminals is changed, the construction difficulty is reduced, and requirements for laying wires inside substations are met; besides, regarding personnel assignment, multiple elements such as the technical proficiency degrees, credit degrees, fatigue information and alcohol intake of personnel are comprehensively taken into consideration, maintenance personnel who can be most suitable for participating default maintenance are selected, and through the modes that two-dimensional codes are adopted to replace traditional work tickets and matters needing attention are played through voice, the security during substation maintenance is improved.

The invention relates to a vehicle collection reservation method on the basis of two-dimensional codes of mobile terminals. The vehicle collection reservation method includes steps that vehicle owners input identity verification codes and vehicle collection reservation time by the aid of the mobile terminals; the mobile terminals transmit vehicle collection reservation information of the vehicle owners and unique identification codes of mobile equipment to a parking lot server; an AGV (automatic guided vehicle) fetches vehicles and stores the vehicles in temporary reservation parking spaces; the parking lot server generates vehicle collection successful reservation two-dimensional codes, and the vehicle collection successful reservation two-dimensional codes are transmitted to the mobile terminals of users; the users arrive at a parking lot via the vehicle collection successful reservation two-dimensional codes and receive scanning verification; the vehicles are shifted to vehicle access chambers from the temporary reservation parking spaces; the vehicle owners fetch the vehicles from the vehicle access chambers. The vehicle collection reservation method has the advantages that the design is reasonable, vehicle collection reservation requests can be transmitted to the parking lot server via the mobile terminals, the vehicle collection successful reservation two-dimensional codes can be acquired via the mobile terminals, accordingly, verification operation can be completed only by the aid of the two-dimensional codes when the users collect the vehicles, and long-term problems of complicated vehicle collection verification means, multiple constraint conditions, high implementation cost and low efficiency can be solved.

The invention discloses an intelligent drainage and mining method of a coalbed methane well and intelligent drainage and mining equipment of a coalbed methane well immersed pump. The intelligent drainage and mining method is realized as follows: in the pumping and sucking process, liquid the water quality of which confirms to requirements is supplied for underground liquid by a set flux when a liquid replenishing condition is met so that the height and the descent speed of an underground liquid level as well as the viscidity and the output of the underground liquid all confirms to the normal drainage and mining requirement. The drainage and mining equipment comprises a drainage and a water replenishing device; the water replenishing device consists of a water supply device and a water replenishing pipe, wherein the water supply flow of the water supply device is controlled by a control cabinet, the water replenishing pipe is connected with a water outlet of the water supply device, andthe outlet of the water replenishing pipe is arranged near an underground immersed pump. The intelligent drainage and mining method and equipment can continuously replenish, release and drain liquidaccording to the well condition, thereby solving the problems that a submergible motor is easy to burn out due to deteriorative radiating condition and the pump is easy to clamp and burn due to viscidliquid under the conditions that the liquid supply of a coalbed methane reservoir is lowered, the coal ash content of liquid is increased and the tonnage is lower; in addition, the periods for sand bailing and pump inspection are prolonged.

The invention relates to an explosive performance detection device, in particular to an explosive collision sensitivity instrument, which is mainly used for solving the problems of poor testing consistence, low testing accuracy and difficulty in ensuring the testing conditions existing in the conventional collision sensitivity testing device. The explosive collision sensitivity instrument comprises a drop hammer elevating and positioning mechanism, a drop hammer fixing and releasing mechanism, a collision device mechanism, an optically-controlled anti-secondary-collision mechanism and an integral control mechanism, wherein the drop hammer elevating and positioning mechanism comprises a base, an elevating guide rail which is vertically fixed on the upper surface of the base, an upper fixed plate which is horizontally fixed at the top end of the elevating guide rail and an elevating plate of which the end part is connected with the elevating guide rail in a sliding manner; and the drop hammer fixing and releasing mechanism comprises a drop hammer, a drop hammer sucking cover and a vacuum pump connecting pipe. The explosive collision sensitivity instrument has the characteristics of Custer and 12-type tool testing structures, can be used for detecting the sensitivity properties such as collision explosion probability, characteristic drop height and the like of an explosive, and can be used for detecting the safety performance of the explosive.

The invention discloses an electric field regulation and control-based two-dimensional spinning electronic device and a preparation method thereof, and relates to electric field regulation and controlfor generation and polarization rates of spinning currents. The device structure comprises a sandwich structure of a first BN two-dimensional material/ferromagnetic metal-doped III-VI group chalcogenide two-dimensional material/second BN two-dimensional material, a transparent electrode connected with the first BN two-dimensional material and the second BN two-dimensional material, and a channelelectrode connected with the III-VI group chalcogenide two-dimensional material; the ferromagnetic metal is doped in crystal lattice displacement position or gap position of the III-VI group chalcogenide two-dimensional material, so that the electrons of the III-VI group chalcogenide two-dimensional material are subjected to spinning polarization; the spin-polarized electrons generate a spin current through a channel loop under excitation of the incident laser, and the magnetic structure of the ferromagnetic metal-doped III-VI group chalcogenide two-dimensional material is regulated to be converted between ferromagnetic coupling and anti-ferromagnetic coupling through an externally applied perpendicular electric field, so that the polarization rate of the spin current can be regulated within the range of 0-100%, and the two-dimensional spinning electronic device with controllable polarization rate is formed.

The invention discloses a direct fluid-solid coupling heat transfer analysis method for an engine cooling water jacket. The method comprises the following steps: 1, establishing a solid domain and a fluid domain parametric geometric model; 2, carrying out grid partition and grid quality inspection; 3, defining material attributes; 4, defining boundary conditions; 5, defining a coupling heat transfer interface; 6, setting solver parameters; 7, carrying out direct fluid-solid coupling heat transfer analysis considering boiling heat transfer and obtaining calculation results. The method can compensate for the inability to effectively evaluate the heat transfer process and the coolant flow condition between the solid region and the fluid region in a conventional engine cooling water jacket design process, and the method avoids the risk of cracking failure caused by the high temperature of the bridge area of the cylinder head fire surface.

The invention discloses a pH responsive nanometer carrier as well as a preparation method and application thereof, and belongs to the field of medicine delivery. Biomacromolecule is loaded to a pore canal of pH responsive mesoporous silica nanoparticles, a hole plugging agent is used for plugging the pore canal of the mesoporous silica nanoparticles, and the pH responsive mesoporous silica nanoparticles are mesoporous silica nanoparticle surface grafted acidic sensitivity molecules, wherein the diameter of the nanoparticle pore canal is 5-50nm. Under the condition that the pH value is smallerthan or equal to threshold, an acidic sensitivity chemical bond is ruptured, and charge on the surfaces of the nanoparticles is turned into positive charge from negative charge; and under the action of electrostatic repulsion, the hole plugging agent with the positive charge is separated from the surfaces of the mesoporous silica nanoparticles, the pore canal is exposed, and the biomacromolecule is quickly released. The pH responsive nanometer carrier can effectively solve the problems that the biomacromolecule leaks before arriving at target cells or cannot be controllably released under thespecific condition in cells, and controlled release under the specific pH condition of the loaded biomacromolecule is realized.

The invention relates to a method for precision machining of nozzle type parts. The method comprises the following steps that (1) a turn milling composite machining center with double spindles and a precision numerical control all-purpose internal grinding machine are adopted for turning and milling internal and external profiles of the parts and grinding and machining the internal and external profiles of the parts in a one-time clamping state respectively; (2) a UGCAM program is adopted on the turn milling composite machining center, and a virtual simulation technology is applied to verify the correctness of a machining program; and (3) the machining process route, process method, positioning standard and process parameters of the nozzle type parts are designed. Twenty procedures of machining of an original common numerical control device are reduced to be existing fifteen procedures for the similar parts, six finish machining procedures after original heat treatment are reduced to be one procedure, five procedures are omitted, and by turning and milling the internal and external profiles of nozzles and precisely grinding the internal and external profiles of the nozzles in the one-time clamping state, the technical problem that the machining technological conditions and surface roughness of the parts are difficult to ensure is solved, and the aim of replacing grinding with finish grinding is achieved.

The invention discloses a non-preheating electric arc melting welding method of thick-wall red copper and austenitic stainless steel, which includes the following processing steps: 1. the method adopts tungsten electrode helium arc welding added with nickel-copper alloy welding wires of Phi 2 to 4mm for welding; the welding current is 180 to 400A; protective gas is pure helium, the flow volume of which is 10 to 15L per minute; the diameter of the tungsten electrode is Phi 4 to 5mm; the length for positioned welded joints is 10 to 15mm and the distance between the two welded joints is 100 to 150mm; 2. the method adopts the tungsten electrode helium arc welding added with the nickel-copper alloy welding wires of Phi 2 to 4mm for welding under the non-preheating condition; the welding current is 180 to 400A; the protective gas is helium, the flow volume of which is 10 to 15L/min; 3. after the backing welding, the non-preheating welding is used for filling the welded joint. The method solves the problems of the non-preheating welding of the thick-wall red copper and austenitic stainless steel and the hot cracking trend, which improves the solidification temperature, strength and plasticity of the welded joint and prevents the hot cracking and stomata by adding the nickel-copper alloy welding wire by hand.

The invention relates to a method for negative-pressure boiling extraction and preparation of a low-acid ginkgo extract from ginkgo leaves. According to the method, crushed fresh ginkgo leaves or dry ginkgo leaves are used as a raw material, hydrous ethanol is used as an extraction solvent, negative-pressure boiling extraction is carried out, then a liquid extract is filtered and then pretreated by using quartz sand and microporous centrifugal filtration, a filtrate is separated and purified by using a ceramic membrane and an ultrafiltration membrane, a solution passing through the ultrafiltration membrane is concentrated by using a nanofiltration membrane, then ethanol is recovered, a concentrate is subjected to purification with a macroporous resin and phenolic acid removal with a deacidification resin, and negative-pressure microwave spray drying or vacuum freeze drying is carried out so as to obtain the low-acid ginkgo extract. The low-acid ginkgo extract prepared by using the method has a low acid value, high purity, ginkgetin content of more than 28%, lactone content of more than 8% and ginkgolic acid of no greater than 1 ppm, and the method may become a novel technology for industrial production of a low-acid ginkgo extract product.

The invention relates to an experimental tank system of a riparian zone, belonging to the field of physical model experiments in hydraulic engineering. The experimental tank system comprises a tank control platform, an experimental composite-type tank, dual-cycle water supply systems, a dual-level flow control system and a switching system. According to the invention, a cyclic surface water supply system and a cyclic underground water supply system which are independent can be used for effectively controlling surface water of rivers to circulate at a higher speed and underground water to circulate at a low speed, and thus river and river bank water flow environments which further accord with natural conditions are provided for a riparian zone experiment; the dual-level flow control system can be used for adjusting and controlling level and flow boundary conditions of the surface water of the rivers and the underground water of the river bank simultaneously, so that the problems that level and flow conditions of the rivers can be independently adjusted only in the traditional river dynamics experiment and level and flow conditions of the underground water can be independently adjusted only in the traditional underground water experiment; and the electronic intelligent switching system can be used for intelligently adjusting and controlling switch-on and switch-off as well as openness of relative power supply switches, valves, tail gates and the like of the experimental tank system. The experimental tank system disclosed by the invention has high automation degree and is provided with an experiment control platform which is simple and easy to operate, so that a user can finish related operations of the experimental tank system of the riparian zone in the same control interface; and the experimental tank system has a fault prompt function and is convenient for emergent measure taking and equipment overhauling.

The invention provides a simulation experiment method and device for corrosion of a high temperature and high pressure reservoir. The simulation experiment method includes: determining rock mineral composition and element contents of a reservoir sample; determining a corrosion reaction solution according to the fluid characteristics experienced during reservoir geological evolution; determining the temperature and the pressure of corrosion reaction in a simulation experiment according to formation temperature and pressure experienced during reservoir burial evolution; determining the corrosionmode of the simulation experiment according to the corrosion mode during reservoir burial evolution; and carrying out the corrosion simulation experiment to complete the simulation of the corrosion of the high temperature and high pressure reservoir. The present invention also provides the simulation experimental device that can be used in the method. The simulation experimental method and devicecan realistically simulate reservoir conditions.

The invention relates to a sea fracturing method. The method includes firstly performing fracturing geological design; mounting a fracturing wellhead, and mounting a fracturing wellhead high-pressure pipeline and connecting to a high pressure hose; loading fracturing equipment, suspending the fracturing equipment to a deck and fixing, concentrating the fluid container area, arranging a fluid feeding pump, a sand container, a sand mixing pump pry, a high-pressure injecting pump unit, a high pressure pipeline assembly and the like sequentially behind, preparing water, feeding material and preparing fracturing fluid; after a fracture construction ship arrives at a platform, adopting a tail laying manner, mooring, connecting to the high pressure hose at the gunwale of the platform, starting all high pressure injection pumps, inspecting circularly, and performing the pipeline pressure test; performing fracture construction according to the designed pump injection progress after the pressure test is qualified. The high pressure pipeline assembly is an assembly connected the high pressure injection pumps and high pressure injection pipeline, and the high pressure injection pumps are power equipment injecting fracture fluid into oil pipes through the high pressure pipeline assembly and the high pressure pipeline. The method is applied to oil testing and fracturing construction of sea exploration and development wells.

The invention discloses a test device for cumulative damage of a tunnel bottom structure under cyclic loading. Constraining forces around a specimen are provided by using a digital display jack to simulate the actual stress state of the tunnel bottom structure, a way of densely distributing springs at the bottom of the specimen is used to simulate a restriction effect of tunnel bottom surrounding rock for the bottom structure, and the upper part of the specimen is loaded through an MTS loading system to simulate the effect of train cyclic loading; cumulative damage characteristics of the specimen under the cyclic loading are tested by using a dynamic strain test system and a ceramic piezoelectric testing system. The method and device can simulate the influences of the surrounding rock of different levels by changing the stiffness of the springs at the bottom of the specimen, and further can quantitatively simulate the actual situations of local void or softening of the tunnel bottom surrounding rock through spring combinations of different stiffness and numbers, so as to solve the application problem of bottom constraint when the existing test method and device cannot consider unevenness of the local void or softening at the bottom of the specimen.

The invention relates to a lithium-silicon supplementing material and a preparation method thereof, and an electrode and a battery containing the lithium-silicon supplementing material, and the preparation method comprises the following steps: uniformly dispersing a silicon-containing material in a solvent to obtain silicon slurry A; uniformly dispersing a polycyclic aromatic organic compound containing hydroxyl or carboxyl in a solvent to obtain a solution B; mixing the solution B with the silicon slurry A, and uniformly dispersing and reacting to obtain modified silicon slurry C; uniformly dispersing a lithium source in a solvent to obtain a solution D; uniformly mixing the solution D with the modified silicon slurry C, and reacting to obtain lithium-supplementing silicon slurry E; and drying the lithium-supplemented silicon slurry E to obtain the lithium-supplemented silicon powder. The lithium-silicon supplementing material prepared by the invention can be used as a lithium ion battery negative electrode material to improve the initial coulombic efficiency and electrochemical performance of a battery, and can effectively solve the problem of low initial coulombic efficiency of lithium ion battery silicon and silicon-containing negative electrodes, and the preparation method has the advantages of low environmental requirements, mild and simple process, controllable lithium supplementing quality, and good economical efficiency and safety.

The invention discloses a synthesis method of menthalactone [5,6,7,7a-tetrahydro-3,6-dimethyl-2(4H)-benzofuranone], wherein the method comprises the following steps: using 3-methyl cyclohexanone and pyruvate as raw materials, performing aldol condensation reaction under a catalytic function of Lewis acid to obtain 2-(2-oxo-4-methyl cyclohexylidene)propionate, performing saponification and then reducing by sodium borohydride and acidifying to obtain the menthalactone. The synthesis method provided by the invention has advantages of simple synthesis process, mild reaction condition, concise operation and environmental protection, and is suitable for industrial production of the menthalactone on a large scale.

The present invention relates to the field of medicinal chemistry, and in particular relates to 18F-labeled ethinyloestradiol and a preparation method and application thereof, a modifying group is introduced into ethinylestradiol, and the ethinylestradiol is labeled by 18F, and the 18F-labeled ethinyloestradiol has good bioactivity, excellent pharmacokinetic properties and good stability in vitro, can be better targeting to breast cancer ER + cells, and can be used as a PET tracer for early diagnosis or therapeutic effect evaluation of high metastatic breast cancer ER + cells. The invention also provides the preparation method of the 18F labeled ethinylestradiol, a labeling group is introduced into the ethinylestradiol as a raw material by Click reaction, and heated for being exchanged with 18F<-> under relatively mild conditions, a labeling step and purification time are simplified, the radiochemical yield of the 18F-labeled ethinyloestradiol is high, and commercial application and clinical promotion of radiolabeled compounds are facilitated.

The invention relates to a preparation method of an in-situ growth nano magnesium hydride loaded high specific surface material. An alkali metal hydride, magnesium halide and a support material are utilized for in situ synthesis of the material under a ball milling condition. The invention has the technical effects that: magnesium hydride is generated in situ on the support material surface through replacement reaction, the nano-composite hydrogen storage material with low operating temperature and fast hydrogen absorption and desorption rate is prepared under a mild condition, the problems of harsh preparation conditions, large product particle size and the like in previous nano magnesium hydride preparation, and the thermodynamic and dynamic performance of the magnesium hydride hydrogen storage material can be improved.

The invention discloses a 3D printing restrained forming auxiliary device and a use method thereof. The 3D printing restrained forming auxiliary device comprises a fixing portion, a sliding rail and a cooling device. The fixing portion is fixedly connected with the sliding rail and is used for being fixedly connected with a welding torch of 3D printing equipment, and the cooling device is slidably connected to the sliding rail and is used for cooling deposited metal generated in the printing process of the 3D printing equipment. The majority of heat of the deposited metal generated in the electric arc 3D printing process is brought away through cooling of a cooling block, solidification and high-temperature stay time of molten pool metal is greatly shortened, and the problems that heat accumulation of accumulated parts is serious, the heat dissipation condition is poor, a molten pool is excessively hot, an internal grain organization is thick and big, and mechanical property is low along with increase of the number of accumulated layers are solved. Besides, the 3D printing restrained forming auxiliary device is simple in structure and convenient to use and adjust, the machining margin required for a current electric arc 3D printing workblank forming piece is eliminated or reduced, production efficiency of electric arc 3D printing is improved, and the material utilization rate is increased.

The present invention relates to a ferrite composite wave-absorption material adopting foam aluminum as a substrate. The ferrite composite wave-absorption material comprises, by mass, 5-15% of a foaming agent, 20-50% of ferrite, 25-40% of aluminum powder, and 10-25% of alumina powder. According to the present invention, 1) the problems of expensive price and harsh operation condition of application of TiH2 as the foaming agent can be solved with the foaming agent of the present invention; 2) with the foaming agent of the present invention, the raw material ratio can be changed to adjust the porosity and the pore size distribution of the foam aluminum so as to adjust the wave-absorption performance of the foam aluminum/ferrite composite material; 3) dolomite can be decomposed to produce a lot of gas, and the selected carbon powder and the silicon powder are adopted as the adjustment agent, such that the foaming performance of the foaming agent is adjusted, and the temperature resistance of the foam aluminum is enhanced; and 4) the foam aluminum/ferrite composite material can meet "thin, light, wide and strong" requirements.

The invention relates to granisetron hydrochloride mouth slaking tablet and the formula and preparing process. The process employs rotary oscillating granulator to produce said slaking agent through direct sheeting method after heat extrusion by melting and gradient cooling. When compared with mouth slaking agent produced with normal melting method, the mouth slaking agent in this invention is characterized by faster slaking speed, higher dissolution rate, intact tablet outlook, stronger rigidity and good taste. If compared with current freeze drying, vacuum drying, spray drying technique, the invention is characterized in that it needs no special production device and condition, no special package, the production process is simple, quality is stable and suitable for industrial production. It provides new products for patients that is dysphagia and bedridden, for old people and children, especially for patients suffering tumor chemotherapy and radiotheraphy.

The invention belongs to the field of food additives, and in particular relates to a composite antioxidant for sausage products and a preparation method thereof. The antioxidant comprises the following materials: a glycyrrhiza antioxidant, sodium phytate, a rosemary extract, D-sodium isoascorbate, tea polyphenols and an emulsifier. The materials are reasonable in proportion, contain various antioxidant compounds, have synergy effect, and are good in antioxidant effect; the shelf-life of sausage products can be prolonged under the precondition of hardly increasing the cost; the composite antioxidant is wide in application range, and is suitable for processing sausage products under the conditions of high temperature and low temperature; the composite antioxidant is simple in formula, convenient to use, high in applicability, simple and convenient to prepare; the quality of material type and using amount is safe and efficient; and the composite antioxidant has an important meaning for solving fat and grease oxidation problem in cooked meat products.

The invention discloses a method for disposing urban sludge by using earthworms. The method comprises the steps: incubating and feeding earthworm eggs in dehydrated urban sludge till sexual maturity; continuously feeding the robust sexual-mature earthworms in the dehydrated urban sludge; and laying eggs, continuously incubating and feeding in the sludge, domesticating circularly till the loss rate of the earthworms fed with the naturally oxidized dehydrated urban sludge is stably lower than 1%, treating the dehydrated urban sludge by using the domesticated earthworms, and converting into earthworm cast. According to the method for disposing the urban sludge by using the earthworms, the dehydrated urban sludge can gradually form microbes, enzymes and fish manure with high fused inorganic matters by using the earthworms, strong stench of the urban sludge is eliminated, the content of heavy metals is reduced, and harmlessness and recycle of the urban sludge are furthest realized. The environment-friendly requirement of human beings for sustainable utilization of the urban sludge is met.