1559 results about "Corona" patented technology

The present invention is a magnetic nanoparticle composition with enhanced drug delivery characteristics. The magnetic nanoparticle composition is composed of a magnetic particle core surrounded by a fatty acid and surfactant corona. Methods for increasing the efficacy of therapeutic agents and facilitating diagnostic imaging are also provided.

A portable digital ultrasonic monitoring system and method for use by an operator in detecting the ultrasonic waves and temperature variations produced by sources such as leaks in pipes, arcing, electrical corona and machinery defects is provided. The digital ultrasonic monitoring system includes a microprocessor based system in a hand held elongate housing that digitally analyzes and stores information received from its sensors. The digital ultrasonic monitoring system provides a referenced decibel output reading of the signal strength of the received ultrasonic signals. In addition, a heterodyned type audio signal that is related to the sensed ultrasonic signals is provided to the operator through a pair of headphones. The portable device has user input keys that allow the operator to select from a variety of different operating modes. A display displays a variety of different readings depending upon the operating mode of the device.

The invention discloses an ion wind indoor unit, an ion wind air conditioner system and a control method, and relates to the technical field of refrigerating and heating equipment. In order to solve the problems that an existing air conditioner indoor unit is large in occupation size, large in noise and the like, the ion wind indoor unit is designed. The ion wind indoor unit comprises a shell and an indoor heat exchanger arranged in the shell; an ion wind generator is arranged on the upwind side and / or downwind side of the indoor heat exchanger, and carries out corona on air entering the interior of the generator to generate ion wind and blow out the iron wind so as to achieve convection heat exchange of indoor air; and meanwhile, the ion wind air conditioner system with the ion wind indoor unit and the control method of the air conditioner system are provided. The ion wind indoor unit can reduce the starting noise of air and eliminate electromagnetic noise of a motor and vibration noise of a structural part; use comfort is greatly improved; and meanwhile, the indoor unit structure is simplified, the occupied size of the indoor unit is reduced, the attractiveness of the indoor unit is improved, and the production cost and the assembling cost are reduced.

The present invention provides biocompatible, low molecular weight nanoparticulate formulations that are designed to retain and deliver therapeutics over an extended time course. The therapeutic may be conjugated or adsorbed to the periphery of the corona or conjugated to a core polymer. The nanoparticles comprise targeting ligands also conjugated or adsorbed to the periphery of the corona and / or a contrast agent in the core of the nanoparticle. As such, methods of selective targeting and / or methods of noninvasive imaging using bioluminescence and / or magnetic resonance imaging. Also provided are methods of delivering to and, optionally, imaging of a cell or tissue. Further provided are methods of producing the nanoparticles in batch or continuous mode via simple mixing or laminar flow.

The present invention provides a series of biocompatible, nanoparticulate formulations that are designed to retain and deliver peptides such as anti-angiogenic factors over an extended time course. The nanoparticles can be targeted to a cell or tissue by targeting ligands crosslinked or conjugated to the corona of the nanoparticles. In addition to selective targeting, the nanoparticles also may perform noninvasive imaging using bioluminescence and / or magnetic resonance imaging via a contrast agent in the core of the nanoparticle. Also provided are methods of delivering to and, optionally, imaging of a cell or tissue. Furthermore, methods of producing the nanoparticles in batch or continous mode via simple mixing or micromixing.

The first color gamut conversion unit 102 limits, in a visually natural manner, an output signal to a signal within a range of the DCI color gamut through well-known color gamut conversion processing when there is a color region exceeding the DCI color gamut, the output signal being obtained through the imaging by the imaging unit 101 and represented by the primaries (R, G, and B) determined by a color filter of an image sensor of the camera. It is to be noted that a color gamut conversion technique may be any technique which can limit a color gamut such as gamut conversion processing (Non Patent Literature: “Fundamentals of Color Reproduction Engineering”, Corona Publishing Co., Ltd., pp. 178-180).

Complex coacervate core micelles as surface modification or surface treatment The present invention relates to devices carrying on the surface polymeric micelles and a process for the preparation thereof. It further relates to the use of polymeric micelles as a surface coating for rendering a surface anti-fouling and / or protein-resistant. The present invention relates to modified or treated surfaces carrying on polymeric micelles and a process for the preparation thereof. It further relates to the use of polymeric micelles as a surface coating for surface modification or surface treatment. The surface modification or surface treatment is for example for rendering a surface anti-fouling and / or protein-resistant, or for preventing bacteria proliferation, disinfecting, suppressing odours, preventing malodour, providing easy-cleaning or soil-release properties. These polymeric micelles are of the so-called complex coacervate core type, exhibiting a hydrophilic, neutral corona and a core, which is formed by charge complexation of oppositely charged blocks.

An electrostatic fluid accelerator includes a first number of corona electrodes and a second number of accelerating electrodes spaced apart from and parallel to adjacent ones of the corona electrodes. An electrical power source is connected to supply the corona and accelerating electrodes with an operating voltage to produce a high intensity electric field in an inter-electrode space between the corona electrodes and the accelerating electrodes. The accelerating electrodes may be made of a high electrical resistivity material, each of the electrodes having mutually perpendicular length and height dimension oriented transverse to a desired fluid flow direction and a width dimension oriented parallel to the desired fluid flow direction. A length of the electrodes in a direction transverse to a desired fluid flow direction is greater than a width of the electrodes parallel to the fluid flow direction, and the width of the electrodes is at least ten times a height of the electrodes in a direction transverse to both the desired fluid flow direction and to the length.

The invention relates to an infrared photoacoustic spectroscopy detection device and method for decomposed components of sulfur hexafluoride under partial discharge, belonging to the technical field of partial discharge on-line monitoring of SF6 gas insulating electrical equipment. The device of the invention mainly comprises an induction voltage regulator, a corona free experimental transformer, a partial discharge free protective resistor, a standard capacitive voltage divider, a non-inductive resistor, a GIS analog element, a wide-frequency high-speed ultrahigh-capacity digital storage oscillograph and an infrared photoacoustic spectroscopy system. In the method of the invention, infrared photoacoustic spectroscopy detection is carried out on the decomposed gas of SF6 under partial discharge in the GIS analog element by the device of the invention. The invention has high sensitivity, little gas consumption, multiple detection components and strong anti-jamming capability, can effectively detect SF6, CF4, SO2F2, SOF2, SO2, HF and the like as low as 0.01 muL / L, and is suitable for on-line detection. The invention can be widely used for detection of partial discharge decomposed gas of SF6 in the SF6 gas insulating electrical equipment, especially the GIS equipment.

A sulfur hexafluoride gaseous discharge micro component infrared detection device and method relates to a sulfur hexafluoride gaseous infrared absorption spectrum analysis device and method. The device of the invention mainly comprises an induction voltage regulator, a corona free experimental transformer, a non local discharge protective resistor, a standard capacitance voltage divider, a GIS analogue element, a non inductive resistance, a Fourier transform infrared spectrometer and a wideband high speed super capacity digital storage oscilloscope; wherein the gas tank in the Fourier transform infrared spectrometer is a long optical distance one. The method of the invention includes that discharge micro component detection is carried out on SF6 gas sample in GIS by utilizing the device ofthe invention. The invention can accurately detect various products produced by gas discharge decomposition of SF6 and has the characteristics of high detection precision, high spectrum resolution, good absorption peak symmetry, high signal to noise ratio and the like. The invention can be widely applicable to GIS equipment online running local discharge and provides reliable data for GIS equipment online running state analysis.

A head 2 has a through hole 7 into which compressed air is supplied and flows, and a discharge electrode 11 is disposed inside the through hole 7. When a voltage required for discharging is applied to the head 2 made of a conductor and the discharge electrode 11, a corona C is generated at a tip end 11a of the discharge electrode 11, whereby flowing air is ionized. By a cylindrical housing tube portion 17 made of an insulator and receiving most of the discharge electrode 11 and a tapered guide portion (transfer fluid guiding member) 18 formed at a downstream-side end thereof, an air flow is biased and guided on a side of an outer circumference thereof so as not to rush directly against the corona generating region. Thus, even when air supply pressure is increased, an ion balance can be stabilized without almost changing pressure or a flow rate in the corona generating region.

The invention relates to a nano fluid electrostatic atomizing controllable jet stream minimal lubricating and grinding system. Sprayed fog drops can be controllably distributed through the electrostatic principle, so that the pollution to environment is reduced, and better health security is provided to workers. A grinding system is provided with a corona charging nozzle, wherein a nozzle body of the corona charging nozzle is connected with a liquid supply system and an air supply system; a high-voltage direct-current electrostatic generator on the lower part of the nozzle body is connected with the cathode of an adjustable high-voltage direct-current power supply; the anode of the adjustable high-voltage direct-current power supply is connected with a workpiece charging device; and the workpiece charging device is attached to the non-machined surface of a workpiece. Nano fluid grinding liquid is fed into the corona charging nozzle through the liquid supply system, meanwhile the air supply system feeds compressed air into the corona charging nozzle, the nano fluid grinding liquid is charged into controllable jet stream by the high-voltage direct-current electrostatic generator while being driven by the compressed air to be sprayed out and atomized from the nozzle body, and the controllable jet stream is controllably distributed to a grinding area of the machined workpiece under the actions of electric field force and aerodynamic force.

An electrostatic fluid accelerator having a multiplicity of closely spaced corona electrodes. The close spacing of such corona electrodes is obtainable because such corona electrodes are isolated from one another with exciting electrodes. Either the exciting electrode must be placed asymmetrically between adjacent corona electrodes or an accelerating electrode must be employed. The accelerating electrode can be either an attracting or a repelling electrode. Preferably, the voltage between the corona electrodes and the exciting electrodes is maintained between the corona onset voltage and the breakdown voltage with a flexible top high-voltage power supply. Optionally, however, the voltage between the corona electrodes and the exciting electrodes can be varied, even outside the range between the corona onset voltage and the breakdown voltage, in to vary the flow of fluid. And, to achieve the greatest flow of fluid, multiple stages of the individual Electrostatic Fluid Accelerator are utilized with a collecting electrode between successive stages in order to preclude substantially all ions and other electrically charged particles from passing to the next stage, where they would tend to be repelled and thereby impair the movement of the fluid. Finally, constructing the exciting electrode in the form of a plate that extends downstream with respect to the desired direction of fluid flow also assures that more ions and, consequently, more fluid particles flow downstream.

An Atmospheric Pressure Chemical Ionisation ion source is disclosed wherein the current applied to a corona needle 2 is repeatedly varied between two or more settings during a single experimental run or acquisition. Two or more separate sets of mass spectral or mass analysed data are obtained. The ion source in one embodiment comprises a heated tube 1 arranged to discharge gas and analyte into a housing 7 enclosing corona needle 2. The housing 7 comprises a gas outlet port 3 via which analyte ions exit. According to another embodiment the corona needle does not have to be enclosed within a housing.

The invention provides an audible noise calculating method for a high-voltage direct current electric transmission line of 4 to 8 bundle conducting wires and can effectively solve the audible noise prediction problem of an extra-high-voltage direct current electric transmission line. The calculating method comprises three parts that (1) the surface electric field intensity of the conducting of the high-voltage direct current electric transmission line is calculated; (2) the audible noise level (in summer) of the high-voltage direct current electric transmission line is calculated; and (3) the audible noise level of other seasons is obtained through adding or reducing correction items. The calculating method is simple, the implementation is easy, the audible noise of the direct current line corona of the 4 to 8 bundle conducting wires obtained through the calculation can be preferably coincided with the measuring results of testing line in China through being compared with calculation results of other formulas. The direct current corona audible noise of multiple conducting wires, obtained through calculation by the calculating method provided by the invention can more adapt to the environment climate condition in China. The audible noise calculating method is particularly suitable for the extra-high-voltage direct current corona audible noise calculation when during the 4 to 8 bundle conducting wire adoption in north China.

A method for defining an isolation area around an object of interest in a cell culture vessel, the method comprising the steps of: obtaining one or more images of the cell culture vessel using one or more of a plurality of illumination sources, each illumination source being capable of illuminating the vessel from a different direction; selecting an image or combination of images for further processing; applying a circular object detection transformation to identify one or more objects of interest being substantially circular objects in the cell culture vessel, which circular objects of interest are representative of isolated colonies in the cell culture vessel and determining the center of an object of interest; applying a binarizing step to obtain a binarized image of the object of interest and other objects, wherein the center of the binarized image corresponds to the center of the object of interest; iteratively forming concentric circles with increasing radius, wherein the concentric circles are centered on the center of the binarized image; identifying coronas, wherein a corona is delimited by two circles having successive radius values; for each corona: determining the presence and the location of any other object located in the corona to determine the presence and the location of other objects; determining a clearance angle defining an angular sector free of other objects around the object of interest to define the isolation area around the object of interest.

A nanoparticle organic hybrid material (NOHM) containing an organic polymeric corona having a molecular weight in a range of 100-50,000 g / mol, wherein the organic polymeric corona is covalently attached to an inorganic nanoparticle core, wherein the NOHM exhibits liquid-like properties so that the NOHM moves freely and flows in a manner so that when the NOHM is in a container, the NOHM takes the shape of the container, and wherein the NOHM has a volume fraction (fc) of the inorganic particle ranging from about 0.05 to 0.75, methods of making the NOHMs, and compositions containing the NOHMs.

The invention discloses water-based composite adhesive, which contains acrylate emulsion and a cross-linking agent, wherein the weight of the cross-linking agent is 0.1-6 percent of the weight of the acrylate emulsion; the cross-linking agent is any one or a mixture of hexamethylenediamine and adipic acid dihydrazide; and the acrylate emulsion is formed by copolymerizing a terpenes hard monomer, a terpenes soft monomer, a terpenes carboxylic acid monomer, a terpenes functional monomer, a dual-vinyl monomer and a terpenes cross-linking monomer through nuclear shells under an emulsion system. The adhesive is particularly suitable for dry-type composite adhesion between flexible package composite base materials such as a plastic film and a vacuum aluminized film which are processed through corona; has good leveling, fast drying, high transparency, capability of curing at room temperature, high initial strength, excellent peel strength, difficulty in mesh clogging and skinning, wide adaptability and low cost; and can be applied to various machine types, does not contain any organic solvent, can replace solvent adhesive at present completely, and belongs to environment friendly adhesive.

The invention relates to a therapy device for the specifically local treatment and curing of colds in the region of the nose, frontal sinus and throat area in human beings. The external appearance of the therapy device can resemble that of a common hair dryer or face sauna, but the therapy device also contains a means for reducing or suppressing HF radiation (electrosmog) which is normally emitted towards the external environment. According to the invention, a body made of crystallized salt, especially from a natural source, resulting in negative ionization of the heated air flow, is arranged in the region of the heated air flow prior to the exit thereof from the small, handy device. The body is cross-flown by the heated air flow or is at least touched thereby. The treatment of colds with the aid of said therapy device is based on the fact that cold viruses, i.e., primarily rhino viruses and corona viruses, can be eliminated by active treatment with a heated air flow.

A corona shield for an electrical machine includes a substrate with a coating or a fabric or non-woven fabric made of filaments which are coated, wherein the coating contains electrically conductive inorganic material.

The invention discloses a dielectric filtration material charged regeneration device and method. The method comprises putting an electret or other dielectric filter material finished products as barrier mediums in a voltage alternative electric field so that dielectric barrier discharge is formed, or putting the electret or other dielectric filter material finished products in a corona field under high direct voltage so that corona-dielectric barrier discharge is formed. Through discharge, electrostatic electret charging and / or electrostatic charging is realized so that filter or finished product performances are improved, and the cleaned filter material or product is re-charged and is subjected to disinfection. The dielectric filtration material charged regeneration device comprises a filter material, a positive electrode plate, a negative electrode plate, an AC or DC high voltage generator and a power supply. Through the device and method, filter material or finished product performances are improved, the cleaned filter material or product is re-charged and the disposable product can be recycled. The method has simple processes, is convenient for operation, reduces material and resource wasting and realizes filter material recycle.

The invention relates to an ultra-low temperature heat sealing polypropylene casting film which is formed by casting, co-extruding and compounding a heat-sealing layer, a polypropylene core layer and a polypropylene corona layer, wherein the heat-sealing layer is mainly prepared from the following components: 10-80 portions of polypropylene random copolymer, 20-90 portions of polyolefine elastomer, 0.1-0.5 portion of slipping agent and 0.1-0.5 portion of anti-blocking agent. By optimally designing the contents of various components of heat sealing material, the invention effectively reduces the initial heat sealing temperature of a packing film and widens the heat sealing temperature range. After being put into production, the ultra-low temperature heat sealing polypropylene casting film can improve the speed of packing and making bags, ensure the sealing performance of the bags and simultaneously reduce the scrape rate of making bags, thereby the production efficiency of application manufacturers can be greatly improved. The ultra-low temperature heat sealing polypropylene casting film can be widely applied to quick and automatic package of foods, medicines, textiles and other articles and particularly has advantages in the automatic packing filed with high requirement on air tightness.

The invention relates to a corona ignitor device configured to be fixed within a combustion chamber, including a housing extending between an upper end and a lower end of the ignitor device. Inductor windings are received in the housing between the upper and lower ends, and a magnetic shield located between the housing and the inductor windings prevent magnetic flux from emanating out of the ignitor device.

Dielectric elastomer or electroactive polymer film transducers configured to minimize high electrical field gradients that can lead to partial discharge and corona.

A continuous feed discharge surface treater for treating web materials has a discharge chamber where ionization of a process gas occurs defined and contained by one or more rollers. Enhanced chemical coronas and plasmas are achieved by limiting depletion of the gas chemistry from the discharge chamber and dilution or contamination from mixing with drawn in ambient air. Atmospheric coronas can also be achieved in which minimal or no ozone is exhausted from the treater. Various roller and electrode assemblies, including both fixed and rolling electrodes, can be employed.

he invention discloses a device and a method for purifying indoor air through electrostatic atomization. The purification device comprises a filter screen (1), a corona electrode (2), a metal dust collecting net (3), a water-collecting tank (4), a photocatalyst filter screen (5), an LED source (6), a negative ion generation device (7) and a drainage blower fan (8). The purification device also comprises an electrostatic atomizer (9) forming an electrostatic spraying field (12). The method combines static dust collection purification with electrostatic atomization water washing purification. First air goes through the filter screen and the strong electric field zone formed by high-voltage corona, harmful gases are decomposed by the strong electric field. Then the air goes through the charged water atomization zone formed through electrostatic atomization, harmful gases are dissolved further and dust particles are adsorbed. Then the air goes through the photocatalyst filter screen for deep purification. Combined with negative ion generation and air-flow guidance, the purpose of circulation and high-efficiency purification of air in a room is achieved.

The invention relates to a preparation method of an electronic-grade polyimide film with low linear expansion coefficient. The method comprises the following steps that (1) the step-by-step condensation polymerization technology is used for obtaining polybasic block copolymerization polyamide acid glue solutions comprising one or more bar-shaped rigid chain sections containing para-benzene or biphenyl and one or more soft chain sections containing ether bonds or silicon-oxygen bonds and the like; (2) polyamide acid comprising one or more bar-shaped rigid chain structures containing para-benzene or biphenyl and polyamide acid comprising one or more soft chain structures containing ether bonds or silicon-oxygen bonds are independently compounded, and the two or more polyamide acid glue solutions different in rigidity and softness are mixed and compounded; (3) the compounded glue solutions are subjected to filtration, vacuum defoamation, casting filming, bidirectional stretching, chemical amidization or thermal amidization, infrared complete amidization, high-temperature thermal forming processing, corona processing and a reeling process, and therefore the electronic-grade polyimide film with the thickness being 7.5-125 micrometers, the linear expansion coefficient being 5-18ppm / DEG C, and good physical mechanical performance is obtained.

Apparatuses, systems and methods for detecting corona using audio data are disclosed. A method of processing audio data to detect corona includes determining an indicator of energy at a substantially fundamental frequency in the audio data, determining an indicator of the energy at a plurality of harmonic frequencies in the audio data, determining an indicator of the noise energy in the audio data, determining a comparison indicator of the noise energy relative to the energy at the harmonic frequencies, determining a masking indicator having thresholds for each of the harmonics relative to the fundamental frequency, and determining a corona detection indicator. An apparatus for detecting corona includes a memory, an audio detector configured to obtain the audio data near an electrical conductor in an AC system, and a processor to process the audio data, fundamental and harmonic frequencies of the audio data and their corresponding thresholds to detect corona.