74results about How to "Strong enhancement" patented technology

The invention discloses a surface enhanced Raman scattering substrate material and a preparation method thereof. The surface enhanced Raman scattering substrate material comprises a superparticle structure and a metal-organic frameworks layer, wherein the superparticle structure is composed of gold nanoparticles, part of which is surface-bound to functionally modified molecules; and the metal-organic frameworks layer is formed on at least part of the surface of the superparticle structure. The surface enhanced Raman scattering substrate material can be used for quantitative detection of lung cancer respiratory marker.

The present invention relates to an in vitro produced, artificial cellulosome for enzymatic breakdown of resilient substrates. In particular, the present invention provides a complex having an increased activity on resilient substrates, such as crystalline cellulose. The in vitro formed complex comprises a backbone scaffold having at least four binding sites capable of binding the enzyme components, whereby at least two of the binding sites have essentially the same binding specificity; and at least three different enzyme components being randomly bound to the at least four binding sites. Method for preparing the complex and uses of the same for enzymatic breakdown of resilient substrates are also provided.

The present invention discloses a magnetic field nicking analysis method for extraction of a physical geography magnetic anomaly field boundary. An analysis relation between a magnetic field and a gravitational field is employed, namely a Poisson's equation, to deduce three components of a second-order spectral moment at the surface of the magnetic field to obtain result parameters of magnetic field surface nicking analysis. The method comprises the four steps of: 1, magnetic field component conversion; 2, total magnetic field modulus anomaly [Delta]T total horizontal component module surfacelocal surface element second-order spectral moment; 3, total magnetic field modulus anomaly [Delta]T total horizontal component module surface local surface element invariant statistics; and 4, boundary coefficient extracted from the magnetic field surface. The magnetic field nicking analysis method is employed to perform boundary extraction of the magnetic field to eliminate the false boundary caused by associated anomaly while retaining the high enhancement capacity, resolving power and noise suppression capacity of the gravity nicking analysis for the weak boundary so as to provide more efficient reference information for the interpretation of the geologic structure.

The invention relates to an aptamer based method for detecting surface enhanced raman spectroscopy of a tetracycline residue in milk. The method is as follows: a prepared gold nanoparticle/silicon dioxide nuclear shell composite nanomaterial modifying a p-aminothiophenol labelled molecule is taken as a surface enhanced raman base, and an adding standard recovery measurement mode is used to realize the detection and study of the tetracycline residue in the milk. According to the method for detecting the surface enhanced raman spectroscopy of the tetracycline in the milk, the existence of the tetracycline affects the structure of an aptamer in a detection system, the tetracycline and the aptamer are specifically identified and combined, so that the enhanced bases at different concentrations are released under the existence of the tetracycline at different concentrations, then the detection system is magnetically separated, a composite containing a magnetic microsphere, the aptamer and the tetracycline is adsorbed to the bottom, supernates containing the enhanced bases at different concentrations are subjected to raman signal measurement, and the purpose of sensitively and indirectly detecting the tetracycline residue in the milk is realized according to the characteristic peak map of the labelled molecule at different raman intensities.

The invention relates to 11 pasta nutritional foods prepared with one formula, and a nutritional soup, which are all prepared with raw materials of 10 cereals. The invention belongs to the field of nutritional breakfast pasta health-care food. The invention solves a defect of low nutrient content caused by that the pasta in the market is currently prepared by using simply four. According to the invention, as a result of a nutrient content test, nutrients such as protein, calcium, iron, and the like in 3 products among the 11 cereal nutritional foods and one nutritional soup exceed 3 times that of milk. Also, dietary fiber and carotene are added. The products are prepared according to the nutrients of the various raw materials, and the required nutrients can be increased or lowered, such that nutrients required by athletes can be satisfied. 3 to 10 raw materials are selected, and a weight of 4000g is reached, such that 12 cereal nutritional foods can be simply prepared. The cereal foods provide pure plant nutrition, and have low protein, such that the foods assist in controlling the occurrence rates of various diseases. The foods are high-grade plant nutritional foods for children, young people, the elderly, and all the commodities. The foods are breakfast, and also a supplement of the richest nutrition. The effect of the foods is better than medicines, and the foods are also a best nutritional food choice.

The invention relates to sol and method for preparing a surface-enhanced Raman substrate. The surface-enhanced Raman substrate comprises a substrate body and a sensitive layer. The substrate body is a silicon wafer or a glass substrate. The sensitive layer is formed by silver nanoparticles which are deposited on the surface of the substrate body in a self-assembly mode. The preparation method of the surface-enhanced Raman substrate comprises the steps that firstly, 9-19 mg of silver nitrate (AgNO3) is completely dissolved into 100 mL of ultrapure water; secondly, 2 mL of sodium citrate (Na3C6H5O7) solution is used for preparing solver sol; thirdly, ascorbic acid is used for conducting activating the silver sol, the substrate body is soaked into the activated silver sol, and the assembly time ranges from 1 hour to 72 hours. By adopting the simple self-assembly strategy, the preparation cost is low, preparing is easy, the sensitivity is high, and the speed is high.

The invention discloses a preparation method of an Al2O3/Mo composite material and belongs to the technical field of composite material preparation. The method includes following steps: (1) synthesizing AlOOH nano-particles from an aluminum salt and a precipitating agent in a hydrothermal manner and meanwhile synthesizing MoO3 nano-particles from ammonium molybdate in a hydrothermal manner; (2) mixing the two turbid liquid with fully stirring and performing filtration, a washing process and a drying process to obtain an AlOOH/MoO3 composite powder; (3) performing calcination at 500-580 DEG C for converting MoO3 from a metastable hexagonal structure into a stable orthorhombic structure and enabling AlOOH to be converted into [gamma]-Al2O3 in a dehydration manner; (4) feeding hydrogen for performing reduction for two times to enable the MoO3 to be reduced into Mo powder; and (5) performing a pressing process and a sintering process to obtain the Al2O3/Mo composite material. An Al2O3 hard ceramic phase is high in hardness, is good in abrasive resistance and is strong in chemical stability and has a quite strong reinforcing effect on molybdenum. Al2O3 ceramic particle is dispersed and distributed on a molybdenum substrate and is doped with the molybdenum substrate uniformly. The Al2O3 ceramic particle and the molybdenum substrate are completely metallurgically combined so that grain growth during sintering can be effectively stopped and an effect of refining grain is achieved.

An ultrasonic contract medium is prepared through stirring the mixture of span-80, oleic acid, Tween-80 and 6% dextran injection, inserting the vibrating probe of acoustic vibrator into the liquid tomake it oscillate while the fluorocarbon gas is fed in it from bottom, laying aside, taking microbulles suspension, loading in bottles, sealing and low-temp storage. Its advantages are simple preparing process and high effect.

The invention discloses a permanent magnet array, which is formed by sequentially arranging a plurality of pieces of regular triangle magnetic steel with the same size. The magnetizing directions of the adjacent pieces of regular triangle magnetic steel are different, so that magnetic fields are unilaterally converged; the number of the magnetic steel is Z, and Z is equal to 4*n+3, and n belongs to N*. During use, in the permanent magnet array, the magnetizing directions of the adjacent 2 to 4 pieces of magnetic steel converge, magnetic lines of force are superposed through local N-pole or S-pole magnetic field convergence, the unilateral magnetic flux density of the permanent magnet array is increased, the effect of enhancing the unilateral magnetic field on the surface of the guide railis achieved, and the magnetic field intensity above the array and the effective area of the magnetic field intensity are increased.

The invention discloses a silicon carbide reinforced silicon-based ceramic core and a preparation method thereof. The ceramic core comprises the following raw materials of silicon carbide, a silicon carbide whisker, silicon oxide, metal yttrium powder and a binder, wherein adding mass of the silicon carbide whisker accounts for 10%-18% of that of silicon carbide powder, adding mass of the siliconoxide accounts for 30%-50% of that of the silicon carbide powder, adding mass of the metal yttrium powder accounts for 0.1%-0.8% of that of the silicon carbide powder, and adding mass of the binder accounts for 10%-25% of total mass of the materials described above. The preparation method comprises the following steps that firstly, dry powder is mixed, then the uniformly-mixed powder is graduallyadded into a molten binder, compression molding is conducted, sintering is conducted in a shuttle kiln of an oxygen atmosphere, a final sintering temperature is 1350-1650 DEG C, and the reinforced ceramic core is obtained after molding. According to the ceramic core, the silicon carbide is compounded, an anti-breaking layer has a large amount of spherical morphology, the strength of the product isobviously improved, the ceramic core has excellent physical properties, and can improve the high temperature resistance, impact resistance and the like of the product, and the working time of the ceramic core at 1450 DEG C or above is prolonged.

The invention provides a polymerizable composition which comprises: A. at least one monomer compound which is selected from compounds shown in formula I or formula II, wherein formula I and formula II are shown in the specification, R1, R2, R3 and R4 are respectively and individually H, halogen, C1-C5 alkyl, benzyl, aromatic nucleus, C1-C4 alkyloxy, amino, substituted amino or acylamino, X, Y, and Z are respectively and individually H, OH or C1-C5 alkyl, m is an integer between 0 and 8; and B. an photoinitiator. The polymerizable composition has a higher refractive index, and can form a brightness enhancement film with satisfactory luminance. In addition, the invention also provides a preparation method of the monomer compound in the polymerizable composition, and a backlight module and a liquid crystal display with the brightness enhancement film.

The invention discloses a three-dimensional porous gold-silver alloy nanometer material and a preparation method and application of the three-dimensional porous gold-silver alloy nanometer material. The three-dimensional porous gold-silver alloy nanometer material is a three-dimensional porous gold-silver alloy nanometer particle cube which is of a bicontinuous structure, the edge length of the three-dimensional porous gold-silver alloy nanometer particle cube is 40-100 nm, and the three-dimensional porous gold-silver alloy nanometer material is provided with multiple open holes. The preparation method of the three-dimensional porous gold-silver alloy nanometer material comprises the steps that silver nitrate is added to a gold nanometer octahedron colloidal solution, so that a gold-silver nanometer cube concentrated solution is prepared, fish sperm DNA and 4-mercaptopyridine are added to the gold-silver nanometer cube concentrated solution, so that gold-silver nanometer cube precipitates are prepared; a gold-silver-silicon dioxide colloidal solution is prepared, high-temperature annealing is conducted, and then a gold and silver alloy-silicon dioxide nanometer cubes are prepared; and silicon dioxide is removed through strong base, and etching is conducted until a part of the silver element is removed. The three-dimensional porous gold-silver alloy nanometer material has good dispersity and larger specific surface area and has the strong enhancement function on surface enhanced Raman scattering signals. The preparation method is high in productivity, simple in technological process and simple in operation.

The invention discloses an underwater signal enhancing method based on stochastic resonance and a time reverse mirror, and relates to underwater signal processing. The method comprises the following steps: 1), obtaining a stochastic resonance bistable model through employing a genetic algorithm; 2), employing a fourth-order Ronge-Kutta method to solving a bistable output signal, and obtaining an enhanced signal after stochastic resonance; 3), carrying out the processing of the signal after stochastic resonance through employing the virtual time reverse mirror technology, estimating a channel impulse response, carrying out the time reverse convolution of a received information code signal and an estimation channel, and carrying out the further enhancement of the signal through employing the energy of all paths. The method provided by the invention can be widely used in the field of signal enhancement. The method is higher in enhancement capability for signals which are low in signal to noise ratio and is severely affected by multiple paths.

The invention relates to methods for oxidizing (redox reactions, preferably pulp delignification/bleaching), for carrying out coupling reactions (grafting polymer materials) or for carrying out cross-linking reactions on natural (i.e. having natural origin) or artificial (i.e. synthetically produced polymers) monomers to polymers or of mixtures of natural and artificial polymers or of fibre materials, of lignocellulose-containing, cellulose-containing or protein-like natural polymers or fibre materials such as pulp, textiles like cotton and wool. The invention is characterized in that 1) these oxidation, coupling or cross-linking reactions are carrying out using hydrolases such as lipases, esterases, proteases, amidases, transferases, acylases, glycosidases or glycotransferases or oxidoreductases, such as preferably peroxidases, chloroperoxidases and laccases, either individually or in combination with one another; and 2) that these reactions ( oxidation, coupling or cross-linking reactions) are carrying out with the above mentioned substances and/or with property-changing substances such as monomer to polymer substances (natural or synthetic) either simultaneously or one after the other using specific enzyme-activated enhancer substances and/or coupling substances.

The invention aims to provide premixed feed used for the egg producing period of laying hens. Eggs produced by hens fed by the premixed feed taste mellow. According to the technical scheme, the premixed feed used for the egg producing period of laying hens comprises, by weight, 140-150 parts of wheat bran, 600-700 parts of calcium hydrophosphate, 30-40 parts of 50% choline, 85-95 parts of sodium chloride, 35-45 parts of 99% methionine, 6-10 parts of decavitamin, 6-10 parts of 10% sweet Fe-amino acid, 1-3 parts of 10% copper glycine, 8-10 parts of 15% zinc methionine, 10-14 parts of 15% manganese bisglycinate, 1-3 parts of 0.1% selenium yeast and 0.4-0.6 part of 3.2% calcium iodate. The premixed feed is used for feeding laying hens, the eggs produced by the laying hens taste mellow, are harder in eggshells and easy to store; meanwhile, the morbidity of the laying hens is low, disease resistance is enhanced, the laying rate is increased, and the egg production period is effectively prolonged.

The invention belongs to the technical field of face recognition, and discloses a face recognition system and method based on video multi-frame face feature fusion, and the method comprises the steps:employing a camera of a specific bilateral filter to collect face video data; enhancing the face video data by using video processing software; extracting multiple frames of face feature elements from a face video by utilizing an extraction program, carrying out fusion operation on the multiple frames of face features by using a SMART-PN fusion algorithm; utilizing an identification program to identify the face features by adopting an ultrahigh frequency radio frequency identification technology; storing the acquired face video data by using a memory; and displaying the acquired face video data by using a display. The accuracy of face recognition can be improved; through data comparison processing of the three features of the face mouth, the eyes and the eyebrows, the recognition processing speed is increased.

The invention discloses a device for realizing a thick silver film as a surface reinforced Raman scattering substrate by a physical method. A shielding plate is mounted on physical film plating equipment to replace a template, and is vertically placed rightly above an evaporation source; a hole is formed in the shielding plate; and a substrate is placed rightly above the shielding plate in parallel. The invention further discloses a corresponding method. The device has no need to prepare an AAO template and improve general PVD equipment, only simply modifies the general PVD equipment to directly use a pure silver raw material for preparing SERS substrate silver with higher performance, is more convenient for technology, is stronger in reinforcing effect, and can reach 10-13 M of R6G reinforcing capacity.

The invention mainly aims at providing a compound premix for a laying hen, wherein the mouthfeel of the egg laid by the laying hen eating the compound premix is mellow. The technical scheme is as follows: the compound premix for the laying hen is prepared from the following components in parts by weight: 140-150 parts of wheat bran, 600-700 parts of calcium hydrophosphate, 30-40 parts of 50% choline, 85-95 parts of sodium chloride, 35-45 parts of 99% methionine, 6-10 parts of decavitamin, 6-10 parts of 10% iron glycine, 1-3 parts of copper glycine, 8-10 parts of 15% zinc methionine, 10-14 parts of 15% manganese bisglycinate, 1-3 parts of 0.1% selenium yeast, and 0.4-0.6 part of 3.2% calcium iodate. After the compound premix is used for feeding the laying hen, the egg laid by the laying hen is mellow in mouthfeel, and hard in shell, thus being easy for storage; and meanwhile, the laying hen is low in morbidity, strong in disease resistance, and high in laying rate, and the egg laying period is effectively prolonged.

The invention provides a vacuum hot-rolling method for a multi-layer Ti6Al4V-TiBw/Ti6Al4V composite material. The vacuum hot-rolling method for the multi-layer Ti6Al4V-TiBw/Ti6Al4V composite material comprises the steps that Ti6Al4V and titanium-based composite material plates are cut, stacked by multiple layers and placed into a stainless steel tank, and the weld sealing procedure and the vacuumizing procedure are conducted; and heating and heat preservation are achieved through the high temperature in a furnace, and the multi-layer Ti6Al4V-TiBw/Ti6Al4V composite material is finally formed through multi-pass hot rolling on a hot-rolling machine. Good interlayer interface bonding and good micron-scale thicknesses are obtained, and strengthening and toughening of laminar titanium-based composite materials are achieved. By adoption of the vacuum hot-rolling method for the multi-layer Ti6Al4V-TiBw/Ti6Al4V composite material, extremely high interface bonding strength can be obtained, and the tensile-shear strength can reach 650 MPa; and through hot-rolling deformation, TiB crystal whiskers can be arranged directionally in the laminar direction, the enhancement effect in the laminar direction is made obvious, and the mechanical anisotropy is enhanced.

The invention relates to a method and device for simulating an aircraft RCS by using a target aircraft RCS. The method comprises the steps: obtaining an RCS curve of an aircraft; acquiring an RCS curve of the target drone; setting the target drone to change the RCS curve of the target drone so as to enable the RCS curve of the target drone to accord with the RCS curve of the aircraft, extracting the corrected RCS curve of the preset position, comparing the corrected RCS curve with the RCS curve of the aircraft, and calculating an error; and determining the setting of the target drone accordingto the error range. The RCS of the target drone is changed by loading the Luneberg lens reflector to the target drone, so that the RCS is close to a real airplane, meanwhile, the influence of the Luneberg lens reflector on the aerodynamic characteristics of the target drone is considered and analyzed, and the enhanced amplitude and angle range of the RCS of the target drone can be controlled by changing the loading position and mode of the Luneberg lens reflector. The RCS of the RCS of the target drone in a specific angle range is enhanced to 10dB; and the purpose of simulating the real aircraft RCS by using the target aircraft RCS is achieved.