44results about How to "Sensitive capture" patented technology

The invention relates to the technical field of an optical fiber induction layer. The optical fiber induction layer provided by the invention comprises an upper pressure-sensitive component thin film and a lower pressure-sensitive component thin film which are superposed, and at least one soft smooth thin film by which a space between the two layers of the pressure-sensitive component thin films is divided into at least two compartments; at least one optical fiber moving segment, which extends in a first direction and comprises a plurality of sections which are subjected to S-shaped serial wiring, is arranged in the same compartment, and wiring elbows of upper and lower adjacent optical fiber moving segments are superposed in a staggered mode. The optical fiber moving segments are uniformly distributed on the pressure-sensitive component thin films of the optical fiber induction layer, so that optical fiber induction regions are formed, and since the wiring elbows of the upper and lower optical fiber moving segments are superposed in a staggered mode, an induction blind area can be mutually filled up by the various optical fiber induction regions, so that the optical fiber induction layer, breaking through the characteristic that an optical fiber is easily broken, can be used for rapidly and accurately detecting breath, heartbeats, sleep, temperature and humidity; and the optical fiber induction layer has the characteristics of being high and adjustable in sensitivity, high in resolution, anti-electromagnetic-interference and uniform in sensitivity. The invention also provides a monitoring system, and the monitoring system comprises the optical fiber induction layer, a light source, a light detection component, an optical fiber transmission loop and a processing circuit.

The invention relates to photo-catalytic composite hydrogel based on cyclodextrin and a preparation method thereof. The cyclodextrin, nanometer titanium dioxide and acrylamide copolymer composite hydrogel synthesized by adopting an instant gel method has a three-dimensional net structure containing an amino group with a large number of chelate heavy metal ions, a carboxylate radical and nanometertitanium dioxide with photocatalysis. The photo-catalytic composite hydrogel based on the cyclodextrin, provided by the invention, can adsorb metal ions in water, is high in adsorption efficiency andhas wide application prospect in the fields of ion adsorption and industrial wastewater treatment.

The invention relates to the technical field of power plant running and maintenance, in particular to a running fault diagnosis system and method of power plant equipment. The running fault diagnosissystem comprises a front-end acquisition system, a relay transmission system and a background concentrated information processing system, wherein the front-end acquisition system comprises an inspection platform and a fixed detection platform and also comprises an industrial control module and an information acquisition module, the industrial control module and the information acquisition module are arranged on the inspection platform and the fixed detection platform, the information acquisition module is connected with the industrial control module, the industrial control module can be used for performing data transmission with the relay transmission system, and the relay transmission system is connected with the background concentrated information processing system. In the running faultdiagnosis system and method of the power plant equipment, provided by the invention, a fault state is effectively analyzed by a distributed architecture of an acquisition front end and a background concentrated information processing system.

The invention relates to a method for preparing multi-amino modified cyclodextrin, wherein the method comprises the steps for preparing multi-amino modified cyclodextrin in parts by mass: (1) dispersing cyclodextrin into water, and slowly adding 10%-15% strong alkali aqueous solution into the water until the system is transparent to obtain a solution I; (2) adding p-toluenesulfonyl chloride and acetonitrile into a reactor; dropwise adding the solution I; continuously carrying out a reaction for 3-5 h at room temperature after finishing dropwise adding for 0.5-1 h, ending the reaction, carryingout suction filtration, putting the filtrate into a refrigerator overnight, separating out a large number of white precipitates, carrying out suction filtration to obtain a white solid, dissolving the white solid with water, carrying out suction filtration, refrigerating the filtrate to separate out a large number of white precipitates, filtering, and carrying out vacuum drying to obtain poly-6-p-toluenesulfonyl cyclodextrin; and (3) dissolving the poly-6-p-toluenesulfonyl cyclodextrin and polyamine into a dipole solvent, carrying out a reaction at the temperature of 50-80 DEG C for 4-6 h, adding glycidyl methacrylate, continuing to carry out a reaction for 2-4 h, cooling to room temperature, adding methanol, adding acetone, precipitating, carrying out suction filtration to obtain a whitesolid, and repeating methanol dissolution and acetone precipitation to obtain the double-bond-containing multi-amino modified cyclodextrin.

The invention relates to the field of biochemical analysis and detection, and in particular relates to a hairpin probe group based on enzyme assisted cascade cycle amplification, a preparation methodand use. According to the hairpin probe group provided by the invention, a biological target to be detected is used as a first-level target to trigger first target cycle amplification, so that enrichment amplification of a secondary target sequence is realized; simultaneously, the secondary target sequence also can trigger second target cycle amplification; fluorescent signal sequences are continuously released; and thus, cascade cycle amplification of the fluorescent signal sequences is realized. By adoption of the hairpin probe group, a lot of fluorescent signal sequences can be triggered and generated only through trace biological targets; the very high fluorescence signal intensity is generated; the detection sensitivity of the biological target is obviously increased; the detection limit is increased; simultaneously, the specificity of the cascade cycle amplification of the probe in combination with the biological target is high; and a detection result is accurate.

The invention discloses a highly selective, highly sensitive, and universal cell-specific capture device and method. The nucleic acid aptamer of the invention is immobilized at one time, which can achieve high selectivity and high specificity for target cancer cells Capturing and providing a simple and easy elution method. The capture method of the present invention does not require complicated surface modification process, is low in cost, takes less time, is simple to operate, and has extremely wide application prospects.

The invention discloses a cell analysis method based on cell nucleus DNA analysis, computer equipment and a storage medium. The cell analysis method comprises a first appearance form judgment step and a second appearance form judgment step; the first appearance form judgment step is realized by obtaining a parameter of the area size of a cell nucleus, defining the parameter as a DNA parameter 1, respectively presetting a threshold value A, a threshold value B and a threshold value C for the DNA parameter 1, and dividing the DNA parameter 1 into four numerical ranges, thereby dividing the cells to be analyzed into four types: abnormal cells, suspicious abnormal cells, highly suspicious abnormal cells and positive abnormal hyperplasia cells; and further calculating and judging the coincidence probability of the four types of cells by utilizing a second appearance form judgment step. Therefore, by utilizing the method disclosed by the invention, the speed of cell analysis results can be increased, the workload of medical personnel can be reduced, the accuracy of the output analysis results can be ensured, and the problems of missed diagnosis, misdiagnosis and the like can be avoided.

The invention discloses a filter quantity meter. The filter quantity meter comprises a vibration sensor and a metering mechanism. The vibration sensor comprises an output end and a sensing end capable of sensing vibration caused by a to-be-metered medium. The output end of the vibration sensor is connected with the input end of the metering mechanism. The invention further discloses a filter quantity metering method, a filter element with a metering function and a filter with a metering function. The filter quantity meter has the advantages that the small vibration sensor is used, the filter quantity meter is isolated from the to-be-metered medium and does not directly contact with the to-be-meter medium, the filter quantity meter can sensitively capture the vibration caused by the to-be-meter medium, and various parameters of the to-be-meter medium can be metered; the metering mechanism is arranged externally, the liquid to-be-metered medium cannot destroy the metering mechanism easily, water-electricity isolation can be achieved effectively, and use safety is achieved.

The invention relates to an antibacterial photocatalyst composite hydrogel for removing heavy metals, wherein the antibacterial photocatalyst composite hydrogel is cyclodextrin, nano titanium dioxideand acrylamide copolymer composite hydrogel synthesized by adopting an instantaneous gel method, has a three-dimensional network structure, and structurally contains amino groups and carboxylate radicals of a large amount of chelated heavy metal ions and nano titanium dioxide with a photocatalyst effect. The antibacterial photocatalyst composite hydrogel for removing the heavy metals can adsorb metal ions in water and is high in adsorption efficiency; wide application prospects are realized in the fields of ion adsorption and industrial sewage treatment.

The invention provides a sensing wire for fitness clothes, which belongs to the field of wires. The sensing wire provided by the invention includes a core wire and a sensor element; the core wire includes an inner core wire and a wire sheath, and the sensor element includes a gold microwire semi-embedded base and a lead wire. Among them, the gold microwire semi-embedded base adopts a three-wire connection method, and conductive silver paste is coated on the lead wire to fix the lead wire. The connection method between the core wire and the sensor element is to connect the inner core wire of the core wire to the sensor element. The leads are resistively soldered. The sensing wire for fitness clothes provided by the invention has good service life and wide applicability, and its 1000-time stretch recovery rate is only 1.84%, and at the same time, it can still maintain normal operation after being stretched by 3.1cm.

The invention discloses a mixed photonic crystal, and a preparation method and applications thereof. The mixed photonic crystal comprises a polyethylene glycol 200 diacrylate inverse opal skeleton andmetacrylic acid ester gelatin and magnetic nanoparticles used for filling apertures of the skeleton. According to the preparation method, silica colloidal microspheres are taken as a template, a pre-gel A is added for reaction and polymerization, and the silica colloidal microspheres are removed so as to obtain the polyethylene glycol 200 diacrylate inverse opal skeleton; pre-gel B is added intothe polyethylene glycol 200 diacrylate inverse opal skeleton for reaction and polymerization so as to obtain a finished product. The mixed photonic crystal can be used in drug resistance cell detection as a carrier. The mixed photonic crystal is high in stability, possesses excellent biocompatibility and magnetic responsiveness; the preparation method is simple; the operationality is high; the preparation method is friendly to the environment; the mixed photonic crystal can be used in drug resistant cell detection; the surface of the mixed photonic crystal can be loaded with folic acid; and simple and effective capturing of myeloid leukemia drug resistance cells can be realized with high specificity and sensitivity.

The invention discloses an anti-theft transformer, which includes uprights, steel frames are fixedly connected between the uprights, and an induction box is fixed on the upper end of the steel frames; When taking the transformer, it emits bright lights and harsh alarm sounds to warn offenders, stop illegal activities in time, and avoid excessive damage to transformer-related equipment. Using counter-control motors and cameras, illegal personnel ignore sound and light warnings , when attempting to violently steal the transformer, the visual image of the offender is captured and recorded in time, and the camera device is also prevented from being damaged. In windy weather or other violent vibrations, the source of external force can be detected sensitively to avoid false activation of the anti-theft device, resulting in excessive use of equipment and saving costs.

The invention discloses a device and method for sensitively detecting membrane permeation pressure value in membrane distillation process, wherein, the device includes a gas storage tank, a membrane permeation test component, a DC power supply, a high-sensitivity electric bridge and a diaphragm to be tested; the membrane The soaking test assembly includes an accommodating cylinder, a flange plate and a bottom plate, the diaphragm to be tested is located between the flange plate and the bottom plate, and a conductive sheet is arranged between the diaphragm to be tested and the bottom plate; the gas storage tank is reduced The pressure valve, the pressure regulator and the pressure gauge are connected to the storage cylinder; the upper terminal and the lower terminal are also arranged on the upper end of the storage cylinder and the lower side of the conductive sheet, and the DC power supply is connected with the upper terminal and the lower terminal. The connecting posts are connected; two lead posts are distributed on the side wall of the containing cylinder, and the high-sensitivity electric bridge is connected with the two lead posts; the method is to use the above-mentioned device to detect the membrane penetration pressure value. The invention can reflect the membrane wetting phenomenon through the electrical parameter detection of the membrane module, so as to quickly and accurately indicate that the system can bear the maximum operating pressure.

The invention discloses a tuning fork density meter and its coefficient calibration method. The tuning fork density meter includes a transmitter, a tuning fork sensing device, a connecting column connecting the transmitter and the tuning fork sensing device, and a bubble eliminating device. The tuning fork sensing device includes a tuning fork seat fixed on the quick-connect flange of the connecting column, a tuning fork body integrally connected with the tuning fork body, a strain gauge arranged at the inner end of the bottom hole at the root of the tuning fork body, and A temperature sensor, the tuning fork sensing device is arranged inside the air bubble eliminating device. Compared with the prior art, the strain gauge is closely attached to the root of the tuning fork fork body, which can more sensitively capture the change signal of the resonant frequency of the tuning fork fork body, and improves the accuracy and stability of density measurement. Calibrate the coefficient of the tuning fork density meter, eliminate the interference of external factors (such as temperature, current, etc.) on the density meter, and improve the accuracy of measurement.

The invention provides a non-volatile echo wall mode all-optical switch based on a Ge2Sb2Te5 phase change material and a preparation method thereof. The preparation method comprises the following steps that S1, an echo wall mode initial optical fiber microsphere resonant cavity with the diameter of 125 [mu] m is prepared by using a standard single-mode optical fiber; S2, a Ge2Sb2Te5 phase change material with the thickness of 50 nm + / -1 nm is sputtered on the optical fiber microspheres through a magnetron sputtering system, and a Ge2Sb2Te5 functionalized microsphere resonant cavity is prepared; and S3, the optical fiber probe guides 532nm pulse laser with different powers and a constant pulse number to carry out optical switch modulation on the Ge2Sb2Te5 functionalized microsphere resonant cavity. According to the invention, by means of the advantages of small size and easy integration of the optical fiber, cascade and integration of the material echo wall mode optical fiber microspheres based on the GST phase change material can be realized, collaborative regulation and control of multiple all-optical switches are realized, and an all-optical network switch system is constructed.

The invention discloses a mixed photonic crystal composite material based on folic acid modification and application. The mixed photonic crystal composite material is prepared from a mixed photonic crystal carrier and folic acid loaded on the carrier, wherein the mixed photonic crystal is prepared from polyethyleneglycol diacrylate inverse opal skeleton and methacrylate gelatin and magnetic nanoparticles with which skeleton pores are filled. The mixed photonic crystal composite material is applied to the detection for myeloid leukemia drug-resistance cells. The remarkable advantage of the mixed photonic crystal composite material is that the composite material is of a nano ordered structure, the specific surface area is large, the mechanical strength is high, and the stability is strong, and the composite material has the excellent biological compatibility and the magnetic responsiveness, and is easy to control. The composite material is applied to the detection for the drug-resistancecells, the myeloid leukemia drug-resistance cells can be specifically, sensitively, simply and effectively captured, and drug-resistance cell strains with good biological activity are guaranteed, andthe myeloid leukemia drug-resistance cells can be effectively enriched and separated after being captured only if a magnetic field is applied.

The invention discloses a wire rope flaw detection instrument based on magnetic flux leakage detection and optical detection. Data and test reports can be exported after the test is completed; accurate damage detection of wire ropes of different diameters can be achieved. The invention is a portable wire rope flaw detector, which can be carried by hand; the wire rope is excited by a permanent magnet, the signal is easier to capture, and the detection result for the small diameter wire rope is more accurate.

The invention discloses a silicon based photocatalytic magnetic molecularly imprinted material and a preparation method thereof. The molecularly imprinted material is silicon based photocatalytic magnetic molecularly imprinted material nano-powder prepared by the steps of: subjecting ammonium hexafluorotitanate, boric acid, ammonium fluosilicate, oxytetracycline, 1-5% of FeCl2, FeCl3, potassium sodium tartrate and sodium hydroxide of certain weight and order to chemical reaction synthesis, and then conducting washing, centrifugation, drying, and low-temperature calcinations, etc. The silicon based photocatalytic magnetic molecularly imprinted material provided by the invention can accurately capture trace oxytetracycline in the water environment and perform catalytic degradation, at the same time has the characteristics of high recovery rate, difficult decomposition and environmental friendliness, and has a good removal effect on trace antibiotics existing in the water environment.