280 results about "Ultrasonic irradiation" patented technology

Medical diagnostic apparatus and methods are disclosed. Ultrasound radiation pressure selectively modulates a target area within a body. One or more pulses of radiation containing temporally correlated groups of photons are generated. The photons are characterized by two or more different wavelengths that are selected to have specific interaction with a target chromophore. The two or more different wavelengths are also selected to have substantially similar scattering cross-sections and anisotropy parameters in the target and its surroundings. The pulses of radiation are injected into the body proximate the target area being modulated by the radiation pressure field. Photon groups at each of the different wavelengths that are backscattered from the target area are detected in temporal coincidence. Time-gated background-free amplification of the return signal is used to exclude photons which could not by virtue of their arrival time have interacted with the radiation-pressure-modulated target. Photon groups are selected with a modulation component at the modulation frequency of the radiation pressure modulation field, or at a harmonic of the modulation frequency. From the arrival rate of the detected temporally correlated photon pairs or multiplets, chemical information about the target area, such as an oxygenation or pH level can be inferred. Cardiac output may be computed from measurements of venous and / or arterial oxygenation using this technique.

Disclosed is a method of treatment of soft tissue where at least two ultrasound transducers are applied to a tissue protrusion and operated to emit the protrusion ultrasound radiation in pulse or continuous operation mode. At least one of the transducers receives a portion of the ultrasound power emitted by the other transducer and transmitted through the protrusion. A controller analyzes the received portion of the ultrasound and employs the data for actively monitoring the ultrasound radiation with tissue coupling. Disclosed is also an apparatus enabling implementation of the method.

The method of manufacturing the water base disperse ink for jet-ink recording according to the invention comprises a series of steps (1) through (4), that is, (1) a step of purifying by washing pressed cakes composed of a water insoluble or slow soluble colorant; (2) a step of preparing a dispersion liquid with the colorant in high concentration by mixing the colorant obtained through purification by washing, and various additives for ink, as necessary, with an aqueous solution of the dispersant obtained by dissolving the water soluble dispersant in the water base dispersive vehicle; (3) a step of preparing separately a diluent composed of constituents of the dispersion liquid with the colorant in high concentration, excluding the colorant, and preparing an ink-like disperse liquid through dispersion after mixing the diluent with the dispersion liquid with the colorant in high concentration; and (4) a step of obtaining the water base disperse ink, in an evenly dispersed and stable condition, by subjecting the ink-like disperse liquid to ultrasonic irradiation treatment such that secondary aggregations of particles of the colorant contained in the ink-like disperse liquid are reduced to primary particles as much as possible.

Applicable to humans, animals and fish, a method for injecting thoroughly diffused ambient air or disinfectant into water prior to its delivery into a therapy tank plus an underwater PZT probe transmission of separate stable and transient cavitation signals from which a microcomputer determines, 1) the average number of transducer generated sinoidal equal amplitude alternating compression and rarefaction ultrasonic acoustic pressure waves cycles necessary to create inertial and / or transient cavitation and the required number of rectified sinoidal equal amplitude ultrasonic compression acoustic pressure waves necessary to suppress the inertial / transient cavitation and thereby maintain stable cavitation for cleaning and open-wound therapy treatment for 15-minutes, (or greater) time periods and, 2) the necessary dilution of water and disinfectant and its activation by dual-mode transient cavitation to kill the pathogens shed by the “patient” following “patient” cleaning or wound-therapy treatment.

An ultrasonic probe is provided with a CMUT chip having a plurality of transducer elements that change electromechanical coupling coefficients or sensitivities in accordance with a bias voltage to transmit and receive ultrasonic waves, an electric conducting layer formed on the ultrasonic irradiation side of the CMUT chip, an acoustic lens arranged on the ultrasonic irradiation side of the CMUT chip, an insulating layer formed in the direction opposite to the ultrasonic irradiation side of the acoustic lens, a housing unit that stores the CMUT chip in which the electric conducting layer and the insulating layer are fixed with an adhesive and the acoustic lens, wherein the insulating layer is formed by the material that includes at least either silicon oxide or paraxylene to prevent a solvent of the adhesive from soaking into the adhered portion.

There is provided a method for producing fatty acid alcohol ester useful as a substitute fuel for light oil in which an ester interchange reaction between fats or oils and alcohol is carried out in a reactor 1 by applying ultrasonic irradiation at a frequency of 15 to 100 kHz and irradiation intensity of 0.5 to 20 W / cm2 in the presence of a catalyst, followed by an application of ultrasonic irradiation at a frequency of 200 to 3,000 kHz and irradiation intensity of 0.5 to 20 W / cm2 to the reaction product in a separation tank 4 to separate fatty acid alcohol ester and glycerol. Such ultrasonic irradiation in the separation tank 4 may be applied to an interface between fatty acid alcohol ester and glycerol.

The invention belongs to the technical field of solid waste treatment, in particular relates to a combined pre-treatment method for improving sludge disintegration effect and strengthening subsequent anaerobic digestion, comprising the following concrete steps of: gravity settling and thickening residual sludge generated in a secondary settling tank of a municipal sewage treatment plant, sending the thickened sludge into an ultrasonic reactor for ultrasonic irradiation and adding NaOH; sending the sludge into a sludge anaerobic digestion reactor for subsequent medium temperature anaerobic digestion after the combined action of ultrasonic and NaOH; and collecting methane generated by digestion and measuring the yield of the methane with a gas collection device. The method firstly uses ultrasonic and NaOH jointly for sludge treatment, the soluble COD concentration in sludge liquid phase after treatment is improved by about 52 times, the methane yield is improved by 40.6 percent, and the problem of limited application of ultrasonic due to high energy consumption is largely overcome; and the method is applicable to the treatment of residual sludge in sewage treatment plants, and can be achieved by making corresponding modification on the current treatment facilities of sewage treatment plants for different-scale sewage treatment plants, thus having wide application prospect.

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 present invention solves the issue of bacterial infection by medical devices such as intracorporeal indwelling catheters. The present invention relates to an ultrasonic medical apparatus including a medical device (titanium oxide coated medical device 10) covered with a titanium oxide material (titanium oxide alone or a titanium oxide composite material) and ultrasonic irradiation means 20. Ultrasonic irradiation of the titanium oxide material, which exists on a surface of the medical device, causes the surface of the medical device to exert beneficial effects such as antibiotic action, the stimulation of angiogenesis, and the degradation of a blood clot and a biofilm.

The invention relates to a catalytic electrolysis coupling reactor which is suitable for treating various organic wastewater, especially organic wastewater difficult to be bio-degraded. The reactor consists essentially of an iron internal electrolytic layer, an ultrasonic irradiation layer and a three-dimensional electrode oxidation layer which are coupled and connected in series from bottom to top; water treatment technologies such as traditional internal electrolysis, ultrasonic wave and an electricity-Fenton method are coupled to treat the organic wastewater difficult to be bio-degraded soas to lead the organic wastewater to stably reach standard; and the catalytic electrolysis coupling reactor not only can be applicable to pretreatment of various organic wastewater which has high concentration and is difficult to be bio-degraded so as to greatly reduce the concentration of organic pollutants and improve the biodegradability of the wastewater, but also can be applicable to main treatment units for wastewater with small volume of flow so as to lead the treated wastewater to directly reach the standard and be discharged.

The invention discloses carboxylic butadiene-styrene latex. The carboxylic butadiene-styrene latex is prepared from the components of styrene, butadiene, acrylic acid, seed glue, an emulsifier, a functional monomer, sodium pyrophosphate, mercaptan and a chelating agent ammonium persulfate. The invention further discloses a preparation method of the carboxylic butadiene-styrene latex, wherein an ultrasonic irradiation device is arranged on the side wall of a reaction kettle, during reaction, the power is 600-1000W, the ultrasonic frequency is 60-80khz, and the power density of sound waves can be 2-5w / cm<2>. The carboxylic butadiene-styrene latex has the beneficial effects that the reaction efficiency can be effectively improved, the side reactions can be reduced, the monomer conversion rate can be increased to over 99%, the reaction time can be shortened by 4-7 hours, the recycled monomer amount can be reduced greatly, the energy consumption is reduced, the damage on the residual monomer to the system stability and the environmental protection can be eliminated to the greatest extent, the performances such as tensile strength, abrasion resistance, bonding strength, washing resistance, alkaline resistance and pollution resistance are excellent, and the mechanical stability and the chemical stability are excellent.

The invention discloses a load small interfering RNA (siRNA) nanoscale lipid microbubble ultrasonic contrast agent and a preparation method. The load siRNA lipid microbubble is formed by preparing DPPC (Dipalmitoyl Phosphatidyl Choline), DSPE (1, 2-distearoyl-sn-glycero-3-phosphoethanolamine) and DPPA (Diphenyl Phosphoryl Azide) into microbubbles (containing octafluoropropane) according to the weight part ratio of 18:1:1 and then assembling together with PEG-PLL (Polyethylene Glycol-Polylysne)-coated siRNA nanomicelle. The load siRNA nanoscale lipid is nanosclae, has an obvious ultrasonic contrast effect, and can generate obvious siRNA cell transfection efficiency under low-frequency ultrasonic irradiation, thereby further hopefully having important research values and application prospects in the fields of ultrasonic diagnosis and gene treatment.

A method for measuring variations of the surface of an object using acoustic energy in the audio range is provided. Imaging fine surface roughness on the order of few microns is achievable by using a vibroacoustography technique. This technique provides a method for imaging surface roughness on the basis of an ultrasound radiation force that stimulates acoustic emissions at an ultrasound standing wave field. The present invention may be employed as a tool for the nondestructive inspection and imaging of the surface variations of an object.

The invention relates to the field of strong directivity parametric array loudspeaker. In the loudspeaker, audio signal and ultrasonic carrier signal are modulated, and by utilizing the strong directivity of the ultrasonic carrier, the audio signal beam with strong directivity is obtained. In particular, the invention relates to a parametric array loudspeaker and a method for treating signal thereof; the method uses conversion transducer units with different frequencies to form a transmitting array to transmit the ultrasonic carrier modulation signal after power amplification, thereby improving ultrasonic radiant intensity, outputting stable enough signal, making audio signal select a proper carrier frequency, further expanding frequency response of audio frequency and improving loudspeaker performance; and the method can be widely applied to the filed of controlling noise jamming.

Application to humans, animals and fish, a method for injecting thoroughly diffused ambient air or disinfectant into water prior to its delivery into a therapy tank plus an underwater PZT probe transmission of separate stable and transient cavitation signals from which a microcomputer determines, 1) the average number of transducer generated sinoidal equal amplitude alternating compression and rarefaction ultrasonic acoustic pressure waves cycles necessary to create inertial and / or transient cavitation and the required number of rectified sinoidal equal amplitude ultrasonic compression acoustic pressure waves necessary to suppress the inertial / transient cavitation and thereby maintain stable cavitation for cleaning and open-wound therapy treatment for 15-minutes, (or greater) time periods and 2) the necessary dilution of water and disinfectant and its activation by dual-mode transient cavitation to kill the pathogens shed by the “patient” following “patient” treatment.

Titanium oxide-antibody conjugated particles are disclosed, which are provided with selective binding ability without loss of dispersibility and catalytic activity by modifying titanium oxide conjugated particles, dispersed in a water-based solvent by a water-soluble polymer, with an antibody via a linker molecule bound without changing the nature of the water-soluble polymer. The present invention is an antitumor agent, comprising titanium oxide-antibody conjugated particles, wherein a linker molecule is bound to the titanium oxide surface of the titanium oxide conjugated particles, dispersed in a water-based solvent by a water-soluble polymer, via at least one functional group selected from a group consisting of a carboxyl group, an amino group, a diol group, a salicylic acid group, and a phosphoric acid group, and wherein the titanium oxide conjugated particles are further modified with an antibody via the linker molecule. This antitumor agent is concentrated in the affected area and can be utilized as an agent for diagnosis or for treatment in combination with ultrasonic irradiation.

The invention discloses an ultrasonic and hot air combined carrot drying method and an ultrasonic and hot air combined drying device. The ultrasonic and hot air combined carrot drying method comprises the following steps of: (1) pretreatment of a carrot raw material, namely washing and slicing fresh carrots; and (2) ultrasonic and hot air combined drying, namely, putting carrot slices on a sieve, sequentially starting a heating and blowing device and an ultrasonic irradiation device, and carrying out ultrasonic and hot air combined drying on the carrot slices, wherein the drying temperature is 30-70 DEG C, the drying air speed is 0.3-3m / s, the ultrasonic power is 100-200W, the ultrasonic frequency is 20kHz, the distance between the ultrasonic irradiation device and the sieve is 5-15cm and the drying time is 3-6 hours. According to the ultrasonic and hot air combined carrot drying method, an ultrasonic technology is directly and effectively coupled to a hot air drying process, so that the heat transfer and mass transfer efficiencies in the drying process are improved, the drying time is shortened, the energy consumption is saved and the product quality is improved.

The invention discloses a method for preparing methylphenyldialkoxysilane under ultrasonic assistance through the sodium condensation method by using excess MeSi(OR)3 and chlorobenzene. The target product is prepared from the following raw materials: MeSi(OR)3, PhCl and Na, wherein the molar ratio of MeSi(OR)3 to PhCl to Na is (3-6): (1-1.2):2, wherein R in the formula of MeSi(OR)3 is Me or Et; and the purity of the product is not less than 99%. The method is characterized in that the raw materials are fewer in type, too many side reactions can be avoided, the operational program and post-treatment process are simplified, ultrasonic irradiation is introduced to improve the dispersion of microscopic materials on the surface of sodium sand in the reaction system, thus the reaction can be performed more smoothly and safer, the reaction time can be greatly shortened, the reaction efficiency can be increased and the selectivity to the target product is high.

The invention discloses a preparation method for nano-zinc particles. The method includes the following steps that (1) solvents are added to nano-zinc precursors to obtain precursor liquid; (2) the precursor liquid obtained through the step (1) is poured into an ultrasonic reaction tank, ultrasonic irradiation is conducted, and a cavitation corrosion effect is generated accordingly; (3) macromolecule-type interfacial agents, reducing agents and stabilizing agents are added to a reaction hotspot; (4) after the reaction is completed, zinc particles generated by peeling off in the previous steps are collected; (5) the zinc particles obtained in the step (4) are guided into a vacuum high-temperature drying oven and are recrystallized, so that the nano-zinc particles are obtained. The nano-zinc particles obtained through the technology are used for disinfection and sterilization and are 20 times higher than nano-zinc oxide in the traditional technology in effect, and 99.9% of germs, fungi and the like can be killed with only low dosage of the nano-zinc particles; in the production process, no waste water or waste is generated, production cost is low, and meanwhile the nano-zinc particles are highly active and overcome the defect that traditional nano-zinc is instable or prone to losing sterilization ability. The nano-zinc particles obtained through the technology are easy to diffuse and capable of being added to coating of various types through simple mixing equipment.

An ultrasonic irradiation apparatus is presented which is capable of easily irradiating, with ultrasonic waves, a wide area (range) of an object having three-dimensionally curved surfaces. The apparatus includes an ultrasonic irradiator having a plurality of ultrasonic transducers arranged in planar manner, wherein the position of at least a portion of the ultrasonic transducers is arranged to be mutually and flexibly changeable in three dimensions. The ultrasonic irradiator includes a plurality of ultrasonic transducers installed on a surface of a sheet member being flexible and / or elastic or on a net member being flexible and / or elastic. The ultrasonic irradiator further includes a plurality of ultrasonic transducers composed of a flexible piezoelectric sheet member, wherein driving electrodes are arranged on one surface and opposed electrodes are arranged on another surface facing each other. The ultrasonic irradiator may be installed on a surface of a flexible planar bag containing a fluidic material serving as an ultrasonic conductive medium or arranged inside of the planar bag. The apparatus also includes means for moving or tilting the ultrasonic irradiator with respect to an object. The ultrasonic irradiator further has a band holding member for fitting the irradiator to an object.

In a sonodynamic treatment apparatus including: a first ultrasound radiating unit for radiating diagnostic ultrasound; a second ultrasound radiating unit for radiating treatment ultrasound; an echo detection unit for detecting an ultrasound echo; a diagnostic controller for radiating the diagnostic ultrasound with the first ultrasound radiating unit and detecting the ultrasound echo corresponding the diagnostic ultrasound; an echographic controller for processing an echographic image on the basis of the detected ultrasound echo; and a treatment controller for radiating the treatment ultrasound with the second ultrasound radiating unit, radiation of the treatment ultrasound with the second ultrasound radiating unit is controlled to have a predetermined exposure duration and a predetermined pause duration of the treatment ultrasound, and the echographic image is generated on the basis of the ultrasound echo during the pause duration of the treatment ultrasound exposure with the diagnostic image generator. The treatment ultrasound may be weakened after detection of a bubble generated by the treatment ultrasound.

The invention relates to an ultrasonic sterilizing and algae removing method for an industrial circulating cooling water system. The method is characterized by arranging a frequency mixing ultrasonic irradiation device on the outer wall of a circulating water conveying pipeline or immersing the frequency mixing ultrasonic irradiation device in a water storage tank and irradiating the industrial circulating cooling water to obtain the circulating cooling water which is subjected to sterilization and algae removal, wherein the frequency mixing ultrasonic irradiation device consists of a high frequency ultrasonic generator, a low frequency ultrasonic generator and ultrasonic transducers. The method provided by the invention can strengthen the single frequency ultrasonic sterilizing effect, can effectively inhibit the growth of fungus and algae in the system without germicide, has good effects of sterilizing and removing algae, has simple and easy operation, reduces the treatment energy consumption and is green and environment-friendly.

The invention relates to a method for treating low-temperature sewage by using a low-intensity ultrasound-enhanced membrane bioreactor, and belongs to a treatment method of low-temperature municipal sewage. The method can effectively solve the problems in the prior art of complex process, high treatment cost, large energy consumption and poor denitrification effect. The method comprises the following steps: membrane assemblies (4) are suspended in a membrane pond (3), an aeration device (6) is arranged at the bottom of the membrane pond (3) to complete the oxygenation and aeration of the low-temperature sewage inside the membrane pond (3), and the low-temperature sewage inside the membrane pond (3) is exposed to the low-intensity ultrasonic irradiation; the ultrasonic transducers (5) of a low-intensity ultrasound generator is arranged on frames (4-2) on both sides of the membrane assembly (4-1); the purified sewage is sucked under negative pressure by the membrane assemblies and the discharge is controlled by an intelligent control discharge system (7), and the concentrated sludge is returned to an anaerobic pond (1). The invention has the advantages of simple process, high stability, low energy consumption, high efficiency and good denitrification effect.

An ultrasonic irradiation apparatus irradiates ultrasonic waves onto a wide area having three-dimensionally curved surfaces. An ultrasonic irradiator having a plurality of ultrasonic transducer is arranged in a plane. The position of at least a portion of the ultrasonic transducers is mutually and flexibly changeable in three dimensions. Ultrasonic transducers are installed on a surface of a flexible and / or elastic sheet member or net member. The ultrasonic irradiator may include a plurality of ultrasonic transducers formed on a flexible piezoelectric sheet member, including driving electrodes arranged on one surface and opposed electrodes arranged on another surface. The ultrasonic irradiator may be installed on or inside of a flexible planar bag containing a fluidic ultrasonic conductive medium. A mechanism is provided for moving or tilting the ultrasonic irradiator with respect to the object, or a band-holding member may be provided for fitting the irradiator to the object.

It is possible to perform microencapsulation of a bioactive substance having a solid form at ordinary temperature in a predetermined wall thickness and particle size without the need of dissolving the solid biologically active substance in any solvent by a method for producing a microcapsule, comprising: heating an aqueous dispersion comprising a dispersion stabilizer, an ionic surfactant, the solid biologically active substance, a polymerization initiator and a radical-polymerizable monomer subjected to ultrasonic irradiation. Therefore, the method enables to design a desired particle readily and it is useful for the microencapsulation.

Provided is an ultrasonic cancer therapy accelerator comprising titanium oxide-metal complex particles showing a long-lasting antitumor effect imparted thereto while sustaining the dispersibility and catalytic activity thereof which are obtained by dispersing titanium oxide-metal complex particles in an aqueous solvent with the use of a water-soluble polymer and modifying the same with molecules containing a low-valent transition metal via linker molecules having been bound thereto without denaturing the water-soluble polymer. To the titanium oxide surface of titanium oxide-metal complex particles which have been dispersed in an aqueous solvent with the use of a water-soluble polymer, linker molecules are bound via at least one functional group selected from the group consisting of carboxyl, amino, diol, salicylate and phosphate groups followed by the modification with low-valent transition metal-containing molecules via the linker molecules. Thus, an ultrasonic cancer therapy accelerator, which comprises titanium oxide-metal complex particles showing a long-lasting antitumor effect imparted thereto while sustaining the dispersibility and catalytic activity thereof, can be provided. This ultrasonic cancer therapy accelerator, which accumulates in an affected area, can be used as a drug for therapy combined with ultrasonic irradiation.

A cleaning liquid for an electronic material, in particular, a silicon wafer, uses ultra-pure water or hydrogen water as raw material water, and performs cleaning in combination with ultrasonic irradiation under the presence of hydrogen micro-bubbles. The method enables efficient cleaning and removal of particle components and the like on the wafer surface and prevention of re-contamination.

The invention relates to a method for the ultrasonic-assisted hydrothermal restoration of a lithium cobalt oxide material in a spent lithium ion battery. The method specifically comprises the following steps of: separating the spent lithium ion battery in a mechanical stripping way to obtain powdery lithium cobalt oxide waste; impregnating the powdery lithium cobalt oxide waste into a 1 to 2 mol / L solution of lithium hydroxide, placing the mixed solution in an ultrasonic hydrothermal reactor, heating the reactor to 150 to 200 DEG C, and applying ultrasonic irradiation for 6 to 12 hours; cleaning and filtering the ultrasonically cooled mixed solution by using de-ionized water for three to five times to obtain black lithium cobalt oxide paste; and drying the black lithium cobalt oxide paste for 6 to 10 hours in an environment of 50 to 80 DEG C to obtain the restored lithium cobalt oxide material. By the ultrasonic-assisted hydrothermal restoration method, the lithium content of the lithium cobalt oxide material in the spent lithium ion battery is increased, the electrochemical performance of lithium cobalt oxide is regained, and the lithium cobalt oxide material can be reused as a cathode material to produce a new lithium ion battery. The lithium cobalt oxide material in the spent lithium ion battery can be effectively treated; and the method has the characteristics of simplicity, high operability, no secondary pollution and good social benefits, economic benefits and environmental benefits.