37results about How to "No filtering required" patented technology

The invention relates to a nano graphene fragment modified corrosion-resistant coating and a preparation method thereof. The invention adopts the technical scheme as follows: the corrosion-resistant coating comprises the following chemical components in percentage by weight: 20-80% of a film-forming agent, 10-30% of a solvent, 0.1-20% of nano graphene fragments, 1-10% of pigments, 1-10% of filler and 1-20% of auxiliaries. The preparation method comprises the following steps: proportioning the chemical components of the corrosion-resistant coating in percentage by weight; then carrying out ultrasonic dispersion for 5-20 minutes so as to obtain the nano graphene fragment modified corrosion-resistant coating. The nano graphene fragment modified corrosion-resistant coating and the preparation method provided by the invention have the characteristics of being simple in process and low in cost and the prepared nano graphene fragment modified corrosion-resistant coating is good in corrosion-resistant effect and wide in application range.

The invention relates to an air-fleet inertial navigation data fusion method based on mutual ranging information, wherein the inertial navigation positioning error of each node of an air fleet is estimated by considering the characteristic that the positioning error of an inertial navigation system basically obeys normal distribution, utilizing the mutual ranging information and the inertial navigation data among the nodes of the air fleet, obtained by an airborne data link, and using a geometric graph translating-rotating data fusing method, and thus, the air-fleet inertial navigation position precision can be improved by about 1/2. The invention effectively combines an airborne data link system and the inertial navigation system through the data fusing method according to the characteristic that the ranging precision of the airborne data link is superior to the ranging of the inertial navigation system, and successfully solves the accurate navigation problem of each node of the air fleet when no GPS (Global Positioning System) exists under the condition of confrontation between systems.

The invention discloses a continuous flow photochemical reactor, which comprises a reaction chamber for photochemical reaction, a temperature control chamber for temperature control of the reaction chamber and a light source control chamber for light source regulation. Specifically, the reaction chamber comprises a shell and a reactor module located in the shell, and the reactor module comprises a photochemical reaction unit, a light source module arranged outside the photochemical reaction unit, a light source heat dissipation module and a reactant temperature control module. Specifically, the reactor module comprises a reaction bin plate, a quartz glass board, a quartz plate fixed cover plate and a light source plate that are stacked sequentially. The continuous flow photochemical reactor not only can realize all-range photochemical reaction in all-ultraviolet band and visible light band, but also has the advantages of compact structure, small volume, good sealing performance, high product yield, large output, long service life, convenient maintenance, highly controllable temperature and reaction process, is suitable for industrial application, and meets the requirements of green chemical pharmacy.

The invention discloses a resonance grounding system single phase grounding fault section positioning method utilizing phase voltage current break variable phase characteristics. The method comprises steps that step 1, a break variable of a phase voltage and a break variable of a phase current of each data acquisition device are calculated; step 2, phases of all frequency components of the phase voltage break variables and the phase current break variables are calculated through utilizing a matrix pencil algorithm; step 3, phase angle difference dph (50) of a phase voltage break variable power frequency component and a phase current break variable power frequency component of one same acquisition device is acquired; step 4, phase angle difference dph (fm) of any high frequency component of the phase voltage break variable and any high frequency component of the phase current break variable is calculated; step 5, an absolute value dj of the difference of the dph (50) and the dph (fm) is calculated; and step 6, magnitudes of all the dj are determined, and a fault section is identified. The method is advantaged in that zero sequence voltages and currents are not required, the phase voltage and the phase current of each phase are only required, compared with a resonance grounding system section positioning method based on the zero sequence voltages and currents, the method has further has properties of autonomy, no need of filtering and easy realization.

The invention discloses a circle slip detection and repairing method by combining a doppler integral method and an ionized layer residual error method. The method comprises the following steps of a, acquiring carrier phase and doppler observation values of two frequency points in a navigation system by a receiver separately; b, calculating the detection amount by utilizing a doppler integral method to carry out preliminary cycle slip detection, and judging whether the cycle slip occurs or not; c, if the cycle slip occurs, enabling the original cycle slip detection amount to be corrected to bewithin +/-4 weeks; d, detecting the cycle slip by using the ionized layer residual error method, obtaining a cycle slip detection amount by using a linear combination of carrier phases, and comparingthe detection amount with a threshold value; if the absolute value of the detection amount of the ionized layer residual error method is larger than the threshold value, judging that the cycle slip occurs, and if not, performing step e; if the absolute value of the detection amount is smaller than the threshold value, judging that no cycle slip occurs; and e, repairing the cycle slip value. The method disclosed by the invention can effectively integrate the advantage of strong cycle slip detection capability of the ionized layer residual error method, and also can avoid the defect that the cycle slip combination of a special ratio cannot be detected.

The invention belongs to the field of coatings. Corresponding products can be applicable to industrial corrosion prevention and architectural ornament. The invention discloses a multifunctional environmental-friendly inorganic silicate coating which comprises a component A and a component B, wherein the component A comprises pigments; the component B comprises a silicate solution and a modifier. The coating is excellent in stability and excellent in film-forming effect.

The invention discloses a new relative positioning method for ship formation. The relative positioning method comprises the steps that a ship formation relative positioning system based on a ship-carried data chain, ship-carried inertial navigation and a relative positioning computer is established, the ship formation relative positioning system is installed on each ship of the ship formation, information interaction contents between the adjacent ships of the ship formation during relative positioning are determined, data of the ship-carried inertial navigation is transmitted to the ship-carried data chain, the ship-carried data chain makes use of radio range finding to carry out mutual distance measurement between every two ships in the ship formation, also makes use of radio communications to notify the inertial navigation data and distance measurement information in real time and transmits the inertial navigation data and the distance measurement information to the relative positioning computer, a distance calculation difference obtained through calculation of the distance measurement information and the inertial navigation data of the ships is used in quantity measurement, a position error of the inertial navigation of each ship is taken as a to-be-estimated amount, and a mathematical model of the relative positioning method of the ship formation is established. The new relative positioning method disclosed by the invention can increase position accuracy of the ship inertial navigation by over two times.

The invention is applicable to the technical field of Internet, and provides a similar web page searching method and device, and the method comprises the steps: obtaining text information of a targetpage, and constructing a page corpus of the target page based on the text information; carrying out traversal search on all the web pages, and determining the web pages containing the page keywords ascandidate pages of the target page; determining the label weight of each page label based on the preset occurrence frequency of each page label of the candidate page in the candidate page; generatingcontent feature information of the candidate page according to page content contained in the candidate page; calculating the page relevancy between the candidate page and the target page according tothe label weight and the content feature information of each page label of the candidate page; and determining the candidate pages of which the page relevancy is greater than a related threshold value as similar pages of the target page. According to the method, multi-dimensional similarity screening is carried out through the page type and the content characteristics of the network page, so thatthe accuracy of page search is improved.

The present invention discloses a comprehensive protector for a crane, wherein the comprehensive protector comprises a lifting motor main circuit and a control circuit. According to the comprehensive protector of the present invention, normally closed contacts PZ1 and PZ2 of relays JZ1 and JZ2 are respectively connected with a lifting control circuit and a lowering control circuit of a cam controller in series; a rotation encoder BMQ is arranged on a main shaft of a lifting motor M; a position sensor is installed on the cam controller of the crane; signals of the rotation encoder BMQ and the position sensor are input into a PLC controller; and the PLC controller controls action of the relay JZ1 or JZ2 through signal acquisition and data processing to enable the lifting motor M and a brake YA to be subjected to power-down. With the present invention, high environment adaptability and system stability can be obtained so as to ensure long term stable and excellent running; lifting distance limitation protection function, crane overspeed protection function, braking slipping distance detection function and load learning function are provided, and load upper limitation parameters are automatically set.

The invention relates to the field of foods, and particularly discloses a garlic juice flavoring which comprises the following components in percentage by weight: 30 to 35 percent of single garlic, 63 to 65 percent of water, 2.0 to 2.5 percent of salt and 0.01 to 0.02 percent of thickening agent. The invention also provides a preparation method of the garlic juice flavoring. The single garlic is used as the main raw material of the garlic juice flavoring of the invention, and the garlic juice flavoring has fragrant and mellow taste, unique flavor and uniform thickness, not only can keep nutritional components, but also can improve the quality of color, smell and taste, better stimulates the appetite of people and has good market prospect.

The invention discloses a method for treating a crude ammonium tungstate solution. The method comprises the steps of (1) washing activated carbon powder by utilizing dilute hydrochloric acid; (2) adding an ammonium sulfide solution, a copper sulfate solution and the washed activated carbon powder into the crude ammonium tungstate solution to carry out purification treatment on the crude ammonium tungstate solution; (3) filtering the purified crude ammonium tungstate solution to obtain filter residue containing the activated carbon powder and a pure ammonium tungstate solution; and (4) carrying out evaporation crystallization on the pure ammonium tungstate solution to obtain ammonium paratungstate. By utilizing the method, a lot of sedimentation time and filtering equipment can be saved, the treatment efficiency can be significantly improved, and the treatment cost can be reduced.

The invention provides a method for separating nanometer aluminum powder with different particle sizes. The method is to disperse the nanometer aluminum powder in a dispersing agent; a dispersing system is centrifugated; and the gradient separation of the nanometer aluminum powder with different particle sizes is realized through gradual reduction of the centrifugal speed. The method, provided by the invention, is simple, feasible, high in separation efficiency and excellent in separation effect; and the particles sizes of all sections of obtained nanometer aluminum powder are not intersected and overlapped.

The invention belongs to the field of sterility detection of medical instruments, and provides a sterility detection method for pipeline and container medical instruments. The method comprises the following steps: adding a sterility culture medium into the pipeline and container medical instruments, performing oscillating and flushing, transferring the culture medium into a sterility container, performing culturing, and checking bacterial colonies, namely a culture medium flushing method; or adding the sterility culture medium into the pipeline and container medical instruments for direct culture and bacterial colony inspection, namely a culture medium filling method. Compared with a membrane filtration method, the culture medium flushing method has the advantages that flushing liquid without nutritional ingredients is not needed for flushing, the culture medium with nutritional ingredients is directly adopted for flushing, the detection rate is higher, filtering operation is not needed, and the false positive probability is reduced. According to the culture medium filling method, the culture medium is directly filled into the inner cavity of a container for culture, and the product does not need to be eluted, so that the possibility of false negative is greatly reduced, and the detection rate is increased.

The invention relates to a wavefront detection method based on nonlinear interface Cherenkov frequency doubling, and belongs to the technical field of wavefront detection based on nonlinear optics. According to the material of a nonlinear interface, the incident angle of fundamental-frequency light to be detected is adjusted to guarantee that the fundamental-frequency light enters the nonlinear interface to generate nonlinear Cherenkov frequency-doubled light, and the wavefront distribution of the frequency-doubled light is received and reconstructed to deduce the wavefront distribution of thefundamental-frequency light. In the method, the phase matching relationship can be automatically met in a broad frequency spectrum based on nonlinear interface Cherenkov frequency doubling, and broadband frequency conversion is realized; meanwhile, the frequency-doubled light is automatically separated from the fundamental-frequency light, no filtering processing is needed, the light path is simplified, and measurement is facilitated; besides, the wavefront distribution relationship correspondence of the frequency-doubled light and the fundamental-frequency light is simple, and wavefront reconstruction of the fundamental-frequency light can be directly performed easily.