98 results about "Ultrasound irradiation" patented technology

A new, inexpensive and non-invasive fetal visualization process helps to locate fetal body parts and identify fetal positions without exposing the fetus to prolonged ultrasound irradiation. Associating location data with biological electrophysiology signal patterns and/or light absorption/reflection-related tissue-specific local fetal body composition data enables the generation of a 3D anatomical and functional map of the fetal body through the expecting mother's womb, which will be essential for long-term home monitoring of a fetus during pregnancy.

The invention discloses a preparation method of a nano graphite sheet. Natural flake graphite is taken as a raw material; oxidation intercalation treatment is performed on the natural flake graphite by adopting an oxidizing agent and an intercalation agent so as to form intercalated expansible graphite; puffing is performed on the intercalated expansible graphite through a microwave heating method so as to form expansible graphite; the expansible graphite is stripped into nano graphite sheets by adopting ultrasonic irradiation in an organic solvent. The preparation method provided by the invention is simple in operation, high in efficiency, excellent in safety and uniform in expansion; the nano graphite sheet prepared through the preparation method is 0.5 to 20 Mum in diameter, 0.35 to 50 nm in thickness and 35 nm in average thickness, the degree of stripping is high, and the nano graphite sheet can be made into different shapes such as a winding drum shape, a curly S shape and a concave-convex block mass shape, and has an excellent heat-conducting property, and can be easily dispersed in the organic solvent.

The invention discloses a focused ultrasound-polymeric micelle controllable drug release device and a release method thereof. The device is characterized by consisting of a focused ultrasound system and a drug loaded polymeric micelle system, wherein the focused ultrasound system is connected with a focused ultrasound energy converter (3) by a signal generator (1) through a power amplifier (2); the drug loaded polymeric micelle system consists of a complex micelle (5) formed by amphiphilic block copolymers and drugs and a medium (4); and a drug loaded polymeric micelle is internally provided with a sensor (6) which is connected with a computer (8) through a signal processor (7). The focused ultrasound-polymeric micelle controllable drug release method comprises the step that the drug carried polymeric micelle is prepared through a dialysis method or a solvent evaporation method, and under ultrasonic irradiation, the polymeric micelle responds to ultrasound through a physical or chemical change so as to ensure that loaded hydrophobic drugs are released from the micelle and enter a focal part.

A composition for treating dye wastewater and method of synthesizing said composition, is disclosed. The composition is a catalyst composition used for ultrasound irradiation process. The composition comprises a copper sulfide and cobalt ferrite (Cu₂S/CoFe₂O₄) nanocomposite material, and hydrogen peroxide (H₂O₂). Further, the present invention also discloses a method for treating dye wastewater using said nanocomposite catalyst composition. The composition according to the present invention, provides a novel, eco-friendly and economical method for the complete degradation of the organic dye pollutants from the industrial wastewater. Further, the sonocatalyst has enough stability, as its structure and degradation ability does not change even after multiple use. Further, the sonocatalyst could be easily separated and reused from a waste water, without any need for complex separation process.

The invention discloses a method for promoting electrolysis of sludge microorganisms for hydrogen production by joint use of ultrasound and alkali. The method comprises the following steps: by taking residual sludge of a municipal wastewater treatment plant as an inoculants, enriching electrochemically active microorganisms of a cathode through utilizing a two-chamber MFC (microbial fuel cell), and transferring the cathode as a cathode of a single-chamber MEC (microbial electrolysis cell); regulating the residual sludge to be alkaline, and performing ultrasound irradiation to obtain a mixed solution D; connecting an external circuit in series with a resistor at room temperature, and running the MEC to realize hydrogen production by taking the sludge subjected to ultrasound and alkali treatment as a substrate. According to the method, joint ultrasound and alkali treatment is performed on the residual sludge to damage flocs and the cell structure of the sludge to release most of organic substances wrapped with cell walls in the sludge into the liquid phase of the sludge and accelerate hydrolysis of the residual sludge, and the hydrogen production efficiency of the MEC is improved by organic matters dissolved after the sludge is disintegrated; stable, reduction and resourceful treatment of the residual sludge of the municipal wastewater treatment plant is successfully realized, and the method is simple in principle, convenient to operate, less in equipment and apparatus investment and high in practicability and applicability.

An ultrasound irradiation apparatus which irradiates an ultrasonic wave to a desired area by selecting two or more piezoelectric elements and by changing the selected piezoelectric elements. The selection may be performed by mechanical movement of substrates or electrical switches. A size of an aperture defined by selected irradiating piezoelectric elements may be determined based on a focal distance of an ultrasonic wave focusing is performed by varying delay times of drive signals applied to the selected piezoelectric elements.

An anthracene electroluminescent material with hole-transporting moieties is 9,10-di-(4'-N, N-diphenyl-benzenamine)anthracene organic compound, the preparation method of which includes the following steps: (1) under ultrasound irradiation, chloro triphenylamine, triisopropyl borate ester and magnesium powder in THF are initiated by molecular iodine to react for 20-40 min, and then hydrolyzed under acidic condition to obtain mono-substituted triphenylamine boric acid; (2) using palladium acetate as catalyst and triphenyl phosphine as ligands, mono-substituted triphenylamine boric acid and 9, 10-dibromo-anthracene in toluene are under alkaline condition to obtain the luminescent material. The invention bring typical hole-transporting moieties triphenylamine into anthracene luminophor, thereby to break through conventional simple modification to anthracene main body material compound, and realize a greater extent regulation of electroluminescent material carrier transmission property, so as to provide novel electroluminescent material for realization of high quantum yield and electron mobility of the light-emitting device.

A drug carrier and an ultrasound apparatus used in combination therewith for releasing a drug. The drug carrier undergoes a reversible phase change from liquid to gas upon ultrasound irradiation, so that the presence of the drug can be detected with a diagnostic apparatus without causing the spilling of the encased drug. The drug carrier includes a drug that is contained in a mixture of a poorly water-soluble substance having a boiling point of 37° C. or lower and a poorly water-soluble substance having a boiling point of higher than 37° C., which mixture is further encapsulated by a membrane of amphipathic substance.

The invention discloses a bell-shaped ZnO nanometer device material and a preparation method thereof. A new product is added for ZnO nanometer structural materials, and gaps of the prior art at home and abroad are filled. Soluble zinc salt, deionized water and hexamethylene tetramine are adopted as raw materials of the bell-shaped ZnO nanometer device material and mixed and dissolved to generate the bell-shaped ZnO nanometer device material by a one-step ultrasonic irradiation process, the bell-shaped ZnO nanometer device material is bell-shaped, a nanometer tube and a nanometer bar are automatically assembled to form the bell-shaped ZnO nanometer device material, the basic structure of the nanometer tube (a bell cover) is a six-prism-shaped tube, a tube opening of the nanometer tube is hexagonal, deformation shapes include a triangle and a diamond, and the nanometer bar (a bell tongue) is cylindrical. The bell-shaped nanometer structure is better in scattering property, two bells are connected locally to form a coaxial cable structure, and a plurality of bells are gathered together to form a trumpet-flower structure. The bell-shaped ZnO nanometer device material is novel in structure and can be applied to fields of medical antibiosis, photoelectric devices, gas sensors, solar batteries and the like.

The invention relates to a method for obtaining an extractive by a solvent extraction method under conditions of pressurization and ultrasonic irradiation. The method comprises the following steps: removing impurities from a substance to be extracted, drying, crushing, putting the crushed substance into an extraction tank, adding a solvent, sealing the extraction tank, and utilizing the pressure device of the extraction tank to carry out pressurization, wherein the pressurized pressure is controlled at 1.1*105-1*106 Pa; and then opening an ultrasonic irradiation device, and extracting for 5-300 min at the extract temperature of 20-100 DEG C to obtain the extractive, wherein the ultrasonic frequency is controlled at 16-500kHz, the ultrasonic power is controlled at 10-5000W, and the ultrasonic strength is controlled at 1-10000W/cm<2>. Since pressurization enables the process of producing cavitation bubble collapse by utilizing the solvent subject to ultrasonic irradiation to be faster and more severe, produces strong washout and crushing actions on the surface of the substance to be extracted and quickens inner and outer diffusion mass transfer in the extraction process, thus the invention has the advantages of fast extraction speed, short extraction time, high extraction yield and the like.

The invention discloses an oxygen-fluorine liposome microbubble therapeutic agent which consists of microbubbles, and oxygen and at least one perfluocarbon existing in the microbubbles, wherein the gas nucleus takes oxygen as a principle component and takes perfluocarbon as an auxiliary component, and the microbubble mainly consists of phospholipid and polyethylene glycol derivative. According to the oxygen-fluorine liposome microbubble therapeutic agent, oxygen can be controlled to be released in a human body through veins delivery and targeted hypoxia tissue under ultrasound wave irradiation, the hypoxia disease is treated, and the therapeutic agent serves as a contrast agent used for ultrasonic enhanced imaging. Therefore, the microbubble is a developing agent and an oxygenating therapeutic agent.

The invention discloses a method for drying a mushroom by combining ultrasound and hot air and an ultrasound wave irradiation device. The method comprises the following steps: 1) pretreating mushroom raw materials; and 2) drying by combining the ultrasound and the hot air: putting the mushroom onto a screen, starting a heating blower device and the ultrasound wave irradiation device in sequence so as to conduct drying by combining the ultrasound and the hot air to the mushroom, wherein drying temperature is 40-70 DEG C, drying wind speed is 0.5-3 m/s, ultrasonic power is 50-200 W, ultrasonic frequency is 18-25 kHz, the distance from the ultrasound wave irradiation device to the screen is 5-20 cm, and drying time is 1-8 h. By means of the method for drying the mushroom by combining the ultrasound and the hot air, heat transfer efficiency and mass transfer efficiency in the drying process are improved, the drying time is shortened, and energy consumption is saved. The mushroom dried according to the method is good in appearance and color, small in percentage of contraction, good in rehydration performance and strong in smell specific to mushrooms.

The invention discloses a medicinal composition for the directional controlled release of trace elements and a preparation method and application. The medicinal composition is characterized by comprising hollow microspheres with the concentration of more than 1*10<6> per milliliters and the granularity of less than 10 micrometers, at least one trace elements which are 10 times less than or equal to the physiological dose of human bodies and pharmaceutically-acceptable carriers or minor ingredients, wherein the trace elements and the hollow microspheres exist in a dissociative form; and the hollow microspheres are prepared from pharmaceutically-acceptable film-forming materials. The medicinal composition is stable and safe, and can be guided trace element ions into the human bodies directionally under the action of ultrasonic irradiation to achieve the biological effect of the vascular tissue regeneration, tissue regeneration or tumor resistance of sites which are subjected to the ultrasonic irradiation effectively; therefore, the medicinal composition has a bright prospect.

The invention discloses a cylindrical tube sound-liquid comprehensive function coprocessor, comprising a cylindrical tube vessel and ultrasonic transducers, the lateral wall of the cylindrical tube vessel is provided with a plurality of ultrasonic transducers in an embattled way, the direction of ultrasonic irradiation of the ultrasonic transducers is perpendicular to the surface of the lateral wall of the cylindrical tube vessel. The cylindrical tube vessel can be internally provided with an ultraviolet generator, a multi-pore ring tube for exhausting ozone and a catalyst. The invention effectively overcomes the shortcomings of cavitated weak-bit angle space and dead-bit angle space existing in structures with square straight angle-bit form, such as square groove, flat plate, polyhedron and the like. By utilizing the synergistic action of ultrasonic wave, ultraviolet, ozone and nanometer titanium dioxide catalysts, sterilization is carried out on wastewater, dusty gas and solid materials effectively; the coprocessor can be made into supercritical processors and ultrasonic reactors to carry out traditional Chinese medicine extraction, perfume purification, alcoholic beverage seasoning, biodiesel preparation, wood powder and bamboo powder pretreatment and antiscaling and descaling treatment of vessels effectively.

The invention belongs to the field of fuel cells, and discloses a performance improvement method and a structure of a direct alcohol fuel cell. According to the technical scheme adopted by the invention, the direct alcohol fuel cell comprises fuel supply channels, a mono-ethanolamine (MEA) film, a sealing device and a packaging shell, wherein the MEA film is clamped between the two fuel supply channels; the sealing device is used for sealing; finally, the packaging shell is used for packaging; an ultrasonic transducer is also arranged in the cell in an integral way. When the direct alcohol fuel cell is used, the ultrasonic transducer is started, and then ultrasound irradiation is carried out on the fuel in the anode fuel supply channel; the ultrasonic transducer comprises a piezoelectric ceramic piece and a lead-out electrode. The pressure gradient is formed along a certain direction in the fuel by the vibration generated by an ultrasonic device, and the gas generated in the anodic oxidation reaction of the fuel cell can be rapidly discharged, so that catalyst poisoning is relieved, and the transient performance of the fuel cell can be also improved.

The invention discloses a plant seed yield increase processing device. The device comprises a processing tube and an ultrasonic functional unit arranged on the tube wall of the processing tube. A conveying screw is arranged in the processing tube, and one end of the conveying screw is connected with a driving motor. A feed inlet and a discharge opening are formed in the processing tube. The invention further discloses a plant seed yield increase processing system which at least comprises two plant seed yield increase processing devices. The discharge opening of the first plant seed yield increase processing device conveys processed seeds into the feed inlet of the second plant seed yield increase processing device. The device and the system have the advantages that the seeds can be sufficiently and evenly subjected to ultrasonic processing, the processing effect is effectively improved, and the yield can be increased by 10% after the seeds are processed by equipment for about 1 min; the conveying speed of screw conveying can be flexibly controlled, the blocking phenomenon is avoided, spiral blades on the screw can turn the seeds in the conveying process, and ultrasound irradiation is more uniform; a modular structure is basically obtained, installation is flexible, and large-scale production can be conveniently achieved.

Disclosed is a method for preparing polymer containing ultraviolet absorption radicals and for preparing inorganic oxide composite particle through ultrasonic irradiation. The method is characterized in that ultrasonic irradiation technique is introduced to the field of the preparation of polymer containing ultraviolet absorption radicals and inorganic oxide composite particle. Activation and dispersive action of ultrasonic sound are made used of to enable polymerisable emulsifier to generate free radicals to initiate reaction under the action of ultrasonic sound to connect inorganic ultraviolet screener and polymerisable organic ultraviolet absorbent to the polymer by means of chemical bonds through emulsion polymerization; in this way, polymer containing ultraviolet absorption radicals and inorganic oxide composite particle with high purity and good dispersivity and ultraviolet resistance can be prepared. The composite particle can be added to a matrix resin as addition agent to prevent the matrix resin from being degraded by ultraviolet light.

The invention relates to a low-frequency focus ultrasound-generating device and its application in clinical physical therapy to cause embolism of new blood vessels of tumor. The device comprises a hand grip, an ultrasound output, a half-ellipsoid reflector, and a water sack. The half-ellipsoid reflector is disposed on the forward end of the hand grip. The rear part of the ultrasound output is set in the hand grip, while the front part of the ultrasound output is set in the half-ellipsoid reflector. On a lateral side of the ultrasound output in the front of the hand grip, there is a tie-in for water infusion and gas exhaust. The inner portion of the tie-in is in communication with the inner portion of the half-ellipsoid reflector. At an opening on the forward end of the half-ellipsoid reflector is disposed the water sack. The front face of said ultrasound output lies in a focus of the half-ellipsoid reflector.

The insertion type ultrasonic in-tissue locating, delivering and irradiating method includes establishing multifunctional ultrasonic duct capable of acquiring different ultrasonic signals simultaneously and setting ultrasonic imaging transducer, ultrasonic irradiating transducer and micro needle hole in the end of the duct; acquiring different kinds of ultrasonic image information with ultrasonic imaging transducer; ultrasonic image monitoring and directing the pierce position and depth in tissue of the injecting needle and/or the ultrasonic irradiation of the ultrasonic irradiating transducer on the tissue. An ultrasonic locating injection and irradiation instrument is also disclosed, which may be used to complete ultrasonic image data acquisition and accurate delivering of treating matter to deep pathological tissue and raise the ultrasonic treatment effect by means of the ultrasonic biological effect.

The invention provides use of a nano enzyme-based material as a sound-sensitive agent in sonodynamic force. The nano enzyme-based material comprises TiO2 nano particles and Cu single atoms anchored on the TiO2 nanoparticles. Under fluorescence imaging navigation of Cu/TiO2 in vivo, the Cu atoms in a static state are reduced to Cu <1+> in an activated state by activating electrons (e<->) on a surface of a TiO2 substrate through ultrasonic irradiation, H2O2 occupies binding sites of the Cu single atoms when the TiO2 substrate is exposed in a tumor microenvironment of over-expression H2O2, such that a catalytic performance induced by the Cu <1+> is enhanced and precise treatment is realized in cooperation with SDT. The Cu/TiO2 has high-catalytic-activity monatomic nano-enzyme characteristics while realizing molecular imaging diagnosis, such that a catalytic activity is greatly improved. A novel, efficient, small-side-effect and visualized diagnosis and precise treatment integrated novel treatment mode is provided for patients with breast cancer.

The invention discloses a hydroxyl-containing bivalent imidazole type ionic liquid, having the following structural formula, wherein R1, R2 and X are defined as the claims and the specification. A preparation method of the hydroxyl-containing bivalent imidazole type ionic liquid comprises the following steps of: dissolving a certain amount of 1-alkyl imidazole into absolute ethyl alcohol, adding acid HX in batches in case of stirring under room temperature, naturally cooling to the room temperature after adding, and dropwise adding 3-chlorine epoxypropane into reaction solution in case of stirring; and putting a reaction bottle into an ultrasonic cleaner for a laboratory, in case of ultrasound irradiation, reacting for a while under a certain temperature, carrying out reduced pressure distillation, and carrying out vacuum drying to obtain the ionic liquid. The invention further relates to the application of the hydroxyl-containing bivalent imidazole type ionic liquid which is independently taken as solvent in the aspect of cellulose dissolving.

The invention discloses lead-free piezoelectric ceramic for a medical ultrasonic transducer as well as a preparation method and application of the lead-free piezoelectric ceramic, the lead-free piezoelectric ceramic is Bi0.5Na0.5ZrO3 doped K0.5Na0.5NbO3 ceramic, and the mass fraction of Bi0.5Na0.5ZrO3 in the lead-free piezoelectric ceramic is less than or equal to 10%. The preparation method comprises the following steps: weighing the raw materials according to a stoichiometric ratio according to a design formula to obtain a mixture, adding the mixture into an organic solvent to obtain slurry,carrying out ultrasonic irradiation, performing drying and sieving on the slurry to obtain undersize, performing calcining to obtain pre-sintered powder, carrying out ball milling, granulation and compression molding on the pre-sintered powder to obtain a green body, and finally carrying out plasma sintering to obtain lead-free piezoelectric ceramic. According to the preparation method, an ultrasonic irradiation powder treatment technology is combined with a spark plasma sintering technology, and the preparation method has the advantages of being excellent in comprehensive performance, environmentally friendly, high in production efficiency, capable of easily achieving batch production and the like, can well meet commercial requirements and is very suitable for preparing lead-free KNN-based piezoelectric ceramic products.

The invention relates to a large power ultrasonic bending vibration device which comprises a functional slot bottom plate, a transducer, an amplitude transformer, a front-arranged power amplifying metal vibration plate, a welding bolt and an ultrasonic wave generator. The invention is characterized in that the front-arranged power amplifying metal vibration plate and the amplitude transformer are arranged between the functional slot bottom plate of a touch piece which receives ultrasonic irradiation and the transducer; the front end surface of the amplitude transformer is connected with the front-arranged power amplifying metal vibration plate; the back end surface is connected with a front-arranged block of the transducer; the front-arranged power amplifying metal vibration plate and the amplitude transformer are screwed by the welding bolt tightly and sequentially and stuck on the functional slot bottom plate of the touch piece which receives ultrasonic irradiation. The large power ultrasonic bending vibration device of the invention has a novel structure, can improve the power of the transducer to a large extent, has a large ultrasonic irradiation action area, increases the ultrasonic cavitating function, reduces the ultrasonic cavitating corrosion degree of a stainless steel plate, effectively reduces the loosening phenomena of an ultrasonic vibrator, is beneficial to the ultrasonic vibrator to work under the condition of long continuous large power, broadens the working frequency bands, enhances the adaptation and is beneficial to manufacturing in batch and reducing cost.

Methods to use medical imaging to monitor the molecule penetration into CNS during ultrasound-mediated delivery are disclosed. The method states a two-step process to predict the amount of molecular penetration which is based on the observation of medical imaging. The first is to propose a unified exposure input to unify the exposure condition so as to build a transferred relation to imaging index. The second is to propose a unified imaging index to unify the imaging readout so as to build a reliable transferred relation to molecular concentration. Linking these two, the molecular penetration induced by ultrasound irradiation can be estimated from medical imaging with ultrasound exposure conditions and molecular sizes.