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60results about How to "Save money and material resources" patented technology

Frequency chosen of singular-spectrum analysis-based magnetic resonance sounding signal extraction method

The invention relates to a frequency chosen of singular-spectrum analysis-based magnetic resonance sounding signal extraction method. According to the method, a nuclear magnetic resonance sounding water detector is used to collect MRS signals of a Larmor frequency-known region; a broadband band-pass filter is adopted to suppress partial noises, and thereafter, the position of MRS signals corresponding to the Larmor frequency are found on a power spectrum based on power spectrum analysis; and frequency chosen of singular-spectrum analysis is performed, so that the MRS signals are extracted. Thefrequency chosen of singular-spectrum analysis includes the following four steps that: embedding is performed; RSVD (Regularized Singular Value Decomposition) is performed; and corresponding singularvalues are selected according to the amplitudes of the MRS signals so as to perform matrix reconstruction; and diagonal averaging is performed. With the method of the invention adopted, random noises, spike noises and power frequency harmonic interference can be effectively filtered from noise-containing MRS signals; and the effective extraction of the MRS signals under a complex strong noise interference condition can be realized. Compared with a traditional MRS signal de-noising method, the method has the advantages of high operation speed, high signal-to-noise ratio, high practicality andthe like.
Owner:JILIN UNIV

Automatic wearing device for protective clothing and method thereof

ActiveCN111713949AQuick and effective to wearImprove sealingApparel holdersSpecial buildingHuman bodyHuman power
The invention discloses an automatic wearing device for protective clothing, the device comprises a disinfection bin for disinfecting and cleaning a user of the protective clothing; a wearing bin usedfor wearing the protective clothing of a protective clothing user; and a central processing unit which is in communication connection with each component and controls the operation of each component.The disinfection bin comprises a body temperature measuring instrument used for measuring the body temperature of the user of the protective clothing; a plurality of disinfectors; and a human body three-dimensional scanner which is in communication connection with the central processing unit and is used for collecting human body data of the protective clothing user and feeding back the human bodydata to the central processing unit, and the central processing unit controls all components in the wearing bin to work according to the human body data so that the protective clothing user can wearprotective clothing of the corresponding size. The device has the advantages that the disinfection bin, the wearing bin and the like are combined, so that the user can more conveniently and quickly wear the protective clothing, the unnecessary assistance of medical care manpower is reduced, time and task load are reduced, and the protective clothing can be effectively prevented from being pollutedby the external environment when being worn in a closed sterile environment.
Owner:SHANGHAI MARITIME UNIVERSITY

Method for quantitatively determining fractured rock mass permeability anisotropy

The invention discloses a method for quantitatively determining fractured rock mass permeability anisotropy. The method comprises the following steps that a practical fractured rock mass is simulated, and similar materials which are different in inclination angle with the horizontal direction are prepared; the permeability rates of the similar materials with different inclination angles are measured, and a function relational expression of the permeability rates and the inclination angles is determined; derivation is conducted on the function relational expression, a derived function of the function relational expression is obtained, and the derived function shows the change rate of the permeability rates to the inclination angles; standardization processing is conducted on the derived function, a relational expression of unit permeability rate change quantity caused by unit inclination angle change to the inclination angles is obtained, and the relational expression is a quantitative expression of the permeability anisotropy of the practical fractured rock mass to be measured. According to the method for quantitatively determining the fractured rock mass permeability anisotropy, a mathematical analysis method is used for determining the change rate of the permeability rates of the fractured rock mass in different directions, standardization processing is conducted on the change rates of the permeability rates and the inclination angles, the unit permeability rate change quantities caused by unit inclination angle change at different inclination angles are obtained, and the permeability anisotropy of the fractured rock mass with larger permeability rate differences can be accurately expressed.
Owner:HOHAI UNIV

Subgrade construction method for aeolian sand section and structure and device thereof

The invention belongs to a subgrade construction method for an aeolian sand section and a structure and a device thereof; the method comprises the steps of construction preparation, filler sampling inspection, aeolian sand loading and transportation, aeolian sand laying and leveling, water replenishing for aeolian sand, aeolian sand compaction, testing detection of compacted aeolian sand, formation of sand fixing columns by grouting the interior of the upper part of a rolling-compacted molded aeolian sand filling layer by a rapid sand fixing column construction machine, slope stacking with sand bags, road bed acceptance, sand gravel loading and transportation, sand gravel layer laying, sand gravel watering compaction, testing detection of a sand gravel layer and compound slope protection.The device is the rapid sand fixing column construction machine, can form four sand fixing columns distributed at intervals. The method and the device can effectively build a road in the aeolian sandsection, provide the feasible subgrade structure and rapid reinforcement equipment, and have the advantages of simple and practical method, stable subgrade slope, low construction risk, low cost, construction period saving, no pollution, long service life of highways and good use effect.
Owner:CHINA CONSTR MUNICIPAL ENG +1

Novel magnetorheological elastomer normal force test platform

The invention relates to a novel magnetorheological elastomer normal force test platform which comprises a power part, a test part and a control part. The power part comprises a motor and a ball screwmechanism. The test part comprises a magnetic conductive base, a magnetic conductive cross beam, a magnetic core column, a coil, an upper magnetic conductive shell, a lower magnetic conductive column, a pressure sensor and an extrusion rod mechanism, the magnetic conductive base and the magnetic conductive cross beam are oppositely and fixedly arranged, the upper end of the upper magnetic conductive shell is fixedly connected with the magnetic conductive cross beam, the lower end of the lower magnetic conductive column is fixedly connected with the magnetic conductive base, and the upper magnetic conductive shell is connected with the lower magnetic conductive column through a magneto-rheological elastomer. Due to the fact that the magnetic conductive base and the magnetic conductive cross beam are relatively fixed, the gap distance (the gap is filled with the magnetorheological elastomer) between the upper magnetic conductive shell and the lower magnetic conductive column is also fixed, the distance between an upper magnetic pole and a lower magnetic pole of the magnetorheological elastomer is fixed along with compression of the magnetorheological elastomer, and the constancy ofthe magnetic field in the magnetorheological elastomer is guaranteed.
Owner:SHANGHAI INST OF TECH +2

Carbohydrate chip for quickly diagnosing tuberculosis, preparation method thereof and tuberculosis diagnostic kit adopting carbohydrate chip

InactiveCN102707053AIncreased antigen specificityStrong specificityMaterial analysisAntigenLipomannan
The invention relates to a carbohydrate chip for quickly diagnosing tuberculosis, which comprises a solid-phase carrier. The carbohydrate chip is characterized by further comprising a mycobacterium tuberculosis lipopolysaccharides antigen probe which is fixed on the solid-phase carrier through oximation reaction. The invention also relates to a preparation method of the carbohydrate chip and a tuberculosis diagnostic kit adopting the carbohydrate chip. The preparation method comprises the following steps: separating, extracting and purifying lipopolysaccharides in a mycobacterium tuberculosis cell wall; fixing LAM (lipoarabinomannan) and LM (lipomannan) probes in the solid-phase carrier, such as a nitrocellulose membrane or porous plate, and the like, by utilizing a method of oximation reaction, thereby obtaining the carbohydrate chip; and judging if the mycobacterium tuberculosis is infected, by bonding the carbohydrate chip with a corresponding antibody in blood serum and performing enzyme linked color-developing reaction. A cell wall lipopolysaccharides antigen with species specificity adopted by the carbohydrate chip only can be combined with a specific tuberculosis antibody, so that the detecting specificity and sensitivity of the tuberculosis are greatly increased.
Owner:SHANGHAI JIAO TONG UNIV

Method for estimating heavy metal concentration in soil

The embodiment of the invention discloses a method for estimating heavy metal concentration in soil and particularly relates to the technical field of soil heavy metal detection. The specific steps are as follows: S1, a pH value at a soil sampling point, a cation exchange capacity, a content of organic carbon and altitude data of the sampling point are collected; S2, a mathematical model is established by the multiple regression analysis method, and a linear relationship between the heavy metal concentration and soil physicochemical properties is established; S3, the required parameters are input into the formula to obtain the estimated heavy metal concentration at the point; S4, the consistency between the predicted result and the measured value of the heavy metal in soil is checked. By synthesizing the physicochemical properties of the sampling point such as the soil pH, the cation exchange capacity and the organic matter content and the regional altitude as parameters, the correlativity between the heavy metal content and environmental factors is established; the heavy metal concentration around a survey region is predicted; the method is more scientific and effective; the reference is provided for the regional environmental pollution degree; and a scientific basis is provided for environmental control in the future.
Owner:JINAN UNIVERSITY

Drinking mineral water quality detection device

The invention discloses a drinking mineral water quality detection device which comprises a conveyor belt I, an LED light source, a conveyor belt II, a slope, a detection tank, a camera, an electric door I, a controller, an electric door II and a movable barrier. The drinking mineral water quality detection device has the advantages that the drinking mineral water quality detection device can be applied to industrial production lines, drinking mineral water can be detected by the aid of hardware platforms such as vision sensors, images of sufficiently uniformly shaken water can be acquired bythe drinking mineral water quality detection device and can be analyzed and processed by the drinking mineral water quality detection device, obtained images of clean water and water mixed with impurities can be compared to one another, accordingly, the granularity of the impurities in the water can be obtained by means of analysis, and a conclusion whether the detected mineral water contains solid floating matters or not and whether standards are met or not further can be drawn; assembly line work can be implemented by the drinking mineral water quality detection device, the drinking mineralwater quality detection device is applicable to detecting whether daily drinking mineral water contains solid floating matters before being delivered or not, is economical and practical and is easy tooperate, financial resources and material resources can be saved, and the work efficiency can be effectively improved.
Owner:KUNMING UNIV OF SCI & TECH

Colloidal-single-crystal-self-assembly computer simulation method based on heat-treatment assistance and preparing method of colloidal single crystals

InactiveCN106521614AImprove self-assembly efficiencyShorten the timeFrom gel stateMicro nanoEvaporation
The invention provides a self-assembly-colloidal-crystal computer simulation method based on heat-treatment assistance and a preparing method of colloidal single crystals. According to the self-assembly-colloidal-crystal computer simulation method based on the heat-treatment assistance, a physical model for optimizing colloidal crystal technological parameters with the Monte Carlo algorithm is built, and technological parameters such as the optimal self-assembly temperature are simulated and predicted through the physical model; meanwhile, the glue evening method is combined, a plurality of other self-assembly parameters of micro-nano ball crystals are controlled and assembled, and large-area colloidal single crystals are obtained. A theoretical model under the condition that liquid evaporation of the colloidal single crystals is considered is built; based on the theoretical model, computer simulation is introduced, and the efficiency of the self-assembly colloidal crystals is greatly improved; the algorithm of the model is efficient and convenient and fast, quite-large computing resources are not required, the obtained result and the experimental result are highly identical, and the quite-good experiment instruction value and market application prospects are achieved. According to the computer simulation method, multiple codes are specifically adopted in the method; the method for preparing the colloidal crystals is suitable for assembling micro-nano balls with the large-range size, and can also be suitable for assembling different kinds of micro-nano balls.
Owner:TIANJIN POLYTECHNIC UNIV

Magnetic Resonance Sounding Signal Extraction Method Based on Frequency Selective Singular Spectrum Analysis

The invention relates to a frequency chosen of singular-spectrum analysis-based magnetic resonance sounding signal extraction method. According to the method, a nuclear magnetic resonance sounding water detector is used to collect MRS signals of a Larmor frequency-known region; a broadband band-pass filter is adopted to suppress partial noises, and thereafter, the position of MRS signals corresponding to the Larmor frequency are found on a power spectrum based on power spectrum analysis; and frequency chosen of singular-spectrum analysis is performed, so that the MRS signals are extracted. Thefrequency chosen of singular-spectrum analysis includes the following four steps that: embedding is performed; RSVD (Regularized Singular Value Decomposition) is performed; and corresponding singularvalues are selected according to the amplitudes of the MRS signals so as to perform matrix reconstruction; and diagonal averaging is performed. With the method of the invention adopted, random noises, spike noises and power frequency harmonic interference can be effectively filtered from noise-containing MRS signals; and the effective extraction of the MRS signals under a complex strong noise interference condition can be realized. Compared with a traditional MRS signal de-noising method, the method has the advantages of high operation speed, high signal-to-noise ratio, high practicality andthe like.
Owner:JILIN UNIV

Pigment granulation product relative hardness detecting instrument

The present invention relates to a hardness detecting device, especially to a paint granulation product relative hardness detecting device, provides a paint granulation product relative harness detecting device which quantizes the product hardness and can scientifically optimize the two indexes of scientifically optimizing the paint particle hardness and the dyeing force when the paint is reducted to power, the device comprises a testing bracket and a switch, one end of the constant-pressure and constant-current tube which is added with compressed air is arranged with a charging opening, the other end is arranged with an impact box, the upper side of the impact box is a pressure-discharging net, the lower side is a material collecting bag, the fluidity of the paint particle product obtained through experiment and the moldability quantizing index parameter value of the particle, the paint particle product is facilitated to represent excellent in the conveying of the system, the quantizing index of the granulation product is settled and the financial resource and physical resource are saved, an equilibrium point is confirmed between the dyeing force of dispersibility and the hardness in order to secure the cost optimum, after a plurality of adjustment a more satisfactory formula can be obtained and the product quantizing index can be provided to the client; and the production equipment technology consultation can be provided to the producing company.
Owner:陶毅

Control device for solving problem of foam stacking in process of aerobic biological treatment of wastewater

The invention provides a control device which can be used for solving the problem of stacking of plenty of foam in the aerobic biological process. The whole device comprises a force boosting electric stirrer and a group of stirring paddles, wherein the stirring paddles are 5-10cm away from the liquid level of sewage and wastewater in the device so as to be convenient for treating the stacked foam; the stirring paddles are controlled by adjusting the speed of the force boosting electric stirrer, adopt ABS (acrylonitrile butadiene styrene copolymers) resin and have strong impact resistance and good insulating properties; for the paddles in the water environment for a long term, ABS is not affected by water, inorganic salt, alkalis and alcohols and various acids and alkalis, so that the aerobic biological treatment experiment process in the device can not be affected; the stirring paddles are connected on the force boosting electric stirrer; the speeds of the stirring paddles are controlled by the stirrer, can be adjusted according to the degree of foam stacking in the device and can be manually adjusted; the stirring paddles are fixed on the force boosting electric stirrer by adopting a spiral mode, so that the stirring paddles are convenient to dismantle so as to wash suspended substances or viscous substances adhering to the stirring paddles for a long term.
Owner:INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI

Mortise and tenon structure anti-loosening nut assembly with tenon screw

The invention discloses a mortise and tenon structure anti-loosening nut assembly with a tenon screw. The mortise and tenon structure anti-loosening nut assembly is reasonable, rigorous and reliable in structure. The nut can be effectively prevented from loosening, and the problem of loosening of the bolt and the nut is directly and fundamentally solved through the nut anti-loosening structure. The assembly comprises a fastening nut, and two semicircular mortises, namely a semicircular mortise I and a semicircular mortise II, are formed in the lower part of the fastening nut; the upper portion of the double-mortise element is provided with two semicircular mortises which are the semicircular mortise III and the semicircular mortise IV respectively, and the plane, making contact with the double-face anti-skid gasket, of the lower portion of the double-mortise element is provided with concave-convex patterns with the anti-skid function. The assembly also comprises atenon screw, the head of the tenon screw is a cross groove, a threaded rod with threads is matched with a screw mortise formed by the semicircular mortise of the fastening nut and the semicircular mortise of the double-mortise element, and after the fastening nut is fastened, the tenon screw is screwed into the mortise to form a mortise and tenon structure; the upper surface and the lower surface of the double-face anti-skid gasket are provided with concave-convex patterns with an anti-skid function.
Owner:MAINTENANCE COMPANY OF STATE GRID XINJIANG ELECTRIC POWER COMPANY +1

Anti-lateral force adjustment suspension strut assembly

ActiveCN109340300AAbility to resist lateral forcesImprove fatigue lifeSpringsLiquid based dampersCoil springEngineering
The invention discloses an anti-lateral force adjusting suspension strut assembly. The anti-lateral force adjusting suspension strut assembly comprises a piston rod which is arranged inside the working cylinder, an oil storage cylinder which is arranged outside the working cylinder, an upper connecting plate, a lower connecting plate, limiting ribs, a spring support, a supporting plate, an adjustable screw and a spring. One end of the upper connecting plate is connected with an automobile body and the other end of the upper connecting plate is connected with the piston rod. One end of the lower connecting plate is connected with a steering knuckle and the other end of the lower connecting plate is connected with the lower part of the oil storage cylinder. The limiting ribs are symmetrically fixed on both sides of the middle portion of the oil storage cylinder. The spring support is arranged on the outside of the oil storage cylinder in a sleeving mode. An angle is formed between the plane of the spring support and a vertical surface of the axis of the piston rod. The support plate is fixed at the lower portion of the oil storage cylinder and located below the spring support. The adjustable screw is connected between the spring support and the supporting plate. By changing the shape of the damper coil spring and adjusting the inclination of the adjustable spring support and thevertical surface of the central axis of a damper, the damper can generate a pre-bending force to counteract the bending force generated by the vehicle weight after loading.
Owner:LIAONING UNIVERSITY OF TECHNOLOGY

Steel wire mesh frame sandwich concrete load-bearing wall, building and construction method of building

The invention provides a steel wire mesh frame sandwich concrete load-bearing wall, a building and a construction method, and belongs to the technical field of construction. The load-bearing wall comprises a core plate and two layers of steel wire meshes correspondingly arranged on both sides of the core plate, and a plurality of rows of connecting steel wires penetrating through the core plate are arranged between the two layers of steel wire meshes; vertical edge steel members are correspondingly arranged on the left and right ends of the core plate, and horizontal edge steel members are correspondingly arranged on the lower bottom surface and the upper top surface of the core plate; the adjacent ends of the vertical edge steel members and the horizontal edge steel members are welded andfixed at joints to form a frame, and both ends of vertical steel wires are correspondingly welded to the corresponding horizontal edge steel members; and both ends of the horizontal steel wires are correspondingly welded to the corresponding vertical edge steel members. According to the steel wire mesh frame sandwich concrete load-bearing wall, the two steel wire meshes are connected through theconnecting steel wires penetrating through the core plate, the edge steel members are arranged around the core plate to enable a wall body to have good integrity and good seismic performance, the labor intensity is reduced, and the construction period is shortened.
Owner:河北羲杰发建筑工程有限公司
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