36 results about "Cavity method" patented technology

Method and device for distending a gynecological cavity. According to one embodiment, a mechanical, non-fluid device is used to distend the gynecological cavity. Such devices include, for example, self-expanding members, such as resilient baskets, coils, whisks, prongs, and loops, or mechanically expanded members, such as inflatable balloons, mechanically-expanded cages and loops, and scissor jacks. The device may serve a purpose in addition to distension, such as illumination, imaging, irrigation, drug delivery, resection and cauterization.

An organic light emitting display apparatus using a micro cavity method comprises a first sub pixel, a second pixel and a third pixel, each of which emits different color from an emission layer interposed between two electrodes. The first sub pixel, the second sub pixel and the third sub pixel form a unit pixel. Emission layers of the first and second sub pixels are formed so as to have the same pattern throughout the first and second sub pixels, and an emission layer of the third sub pixel is formed so as to have a pattern separate from the first and second sub pixels. In this structure, three-colored emission layers may be formed using two mask processes so that productivity is improved due to process simplification, and high-resolution is realized due to a decrease in the distance between deposited patterns.

The invention relates to the dielectric substrate characteristic measurement field and especially discloses a dielectric substrate measurement apparatus based on a multi-resonant waveguide substrate integration vibration cavity method. The apparatus comprises a standard W frequency band metal feed waveguide and N resonant cavities. The apparatus is characterized in that the shape of the N resonant cavities is square and the N resonant cavities are arranged in a slotted shape from left to right; resonant frequencies are successively decreased according to a fixed frequency interval. The measurement method is characterized in that a vector network analyzer is used and is connected to a feed port of a standard metal waveguide through coaxial feed; according to the recorded S parameter data on the vector network analyzer and Smith chart data, a no-load resonant frequency f110 is calculated through a formula; and then simulation software HFSS is used to carry out intrinsic model simulation so as to acquire values of dielectric constants epsilon r and tan delta of the dielectric from the f110. By using the apparatus and the method in the invention, high precision measurement can be performed on the dielectric constant of the dielectric substrate and a loss tangent in a wide frequency band.

A novel fiber optic gyro interference light path based on photonic crystal fiber includes a photonic crystal fiber ring and a Y waveguide integrated optical device. The optical fiber ring adopts an refractive index guided photonic crystal fiber; for winding of the fiber ring, a mode of solidifying one layer after winding is employed; and the Y waveguide tail fiber employs the same type of fiber as the optical fiber ring. The design of photonic crystal fiber meets the requirements of birefringence of gyro and at the same time has the mode field as Y waveguide chip, and a shrinkage cavity method is used for further expansion of the field mode of the optical fiber, so as to reduce additional loss caused by optical fiber splicing. The designed interference optical path has the characteristics of good polarization stability, low magnetic field polarization sensitivity and radiation resistance; the fiber optic gyro using the interference light path has the characteristics of radiation resistance, good temperature stability and low magnetic field sensitivity, and is especially can be used as high precision fiber optic gyroscope for satellite and other space vehicles.

A method for passivating the cavity surface of an F-P cavity semiconductor laser, comprising the following steps: 1, cleaving the F-P cavity semiconductor laser to obtain a laser bar; 2, cleaning the front and rear cavity surfaces of the laser bar with nitrogen plasma; 3, applying epitaxy Growth technology epitaxially grows a layer of protective film on the front and rear cavity surfaces of the laser; 4. Evaporate or deposit an anti-reflection film on the front cavity surface of the laser bar, and evaporate or deposit a high-reflection film on the rear cavity surface; 5. Use segmentation or solution A reasonable approach divides the laser bar into individual laser chips or chip arrays. The invention can effectively reduce the dangling bonds and surface states at the laser cavity surface, and suppress the light absorption of the laser cavity surface; at the same time, the epitaxially grown thin film is a wide bandgap material, which absorbs very little outgoing light, and can greatly suppress the laser cavity The light absorption at the surface and the resulting temperature rise improve the stability and reliability of the laser.

Methods for producing toothbrush handles having an inner cavity are provided.

A dual-cavity method and device for collecting and storing solar energy with metal oxide particles. Solar radiation irradiates into a light receiving cavity of a dual-cavity, heat-collecting reactor to heat a separating plate and preheat metal oxide particles. The preheated metal oxide particles then enter a reacting cavity. As temperature increases, the metal oxide particles reduce to release oxygen, which discharges through a gas outlet. Reduced metal oxide particles discharge through a particle outlet into a particle storage tank, and then into an oxidation heat exchanger to react with the discharged oxygen discharged to release and transfer stored chemical energy to a medium to be heated. The oxidized metal oxide particles are conveyed into a storage tank, and again enter into a particle inlet of the light receiving cavity. Ambient air controls the gas flow rate in the reactor and the reacting rate in exchanger.

The invention discloses a method for removing mouse oocyte nuclei by adopting a zona pellucida solution cavity method. The method comprises the following steps of: performing central slight dripping and peripheral slight dripping in a plastic utensil; making an acid Tyrode's solution react with a zona pellucida under a microscope; forming a pore on the zona pellucida 1-6 seconds later by dissolving till the zona pellucida becomes thin and soft and cytoplasm protrudes outwards; absorbing a first polar body and surrounding cytoplasm out; releasing an oocyte; and denucleating and observing integrality by adopting trypan blue dyeing, wherein the denucleation success rate is over 99.1 percent. In the preparation method, used equipment is simple and the denucleation operation can be completed under a micromanipulator; a reagent has the advantages of simple components, easiness of preparation, low cost, low difficulty of operation, easiness of comprehension, soft denucleation operation, small mechanical damage, quick denucleation and high efficiency; the average denucleation time of each oocyte is 1-6 seconds, the survival rate of each denucleated oocyte is over 97 percent and the success rate of denucleation is over 99 percent; and the method is suitable for researching mouse nucleus transplantation in a Piezo-free laboratory and early events relevant to embryonic development.

The invention discloses a Kalman filter for Kinect doctor visual angle tracking, and belongs to the technical fields of medicine, three-dimensional imaging, digital image processing and the like. TheKalman filter defines a Kalman filter state vector and an observation vector in a frame of Kinect data, and a Kalman system equation is arranged in parallel; The technology is applied to a body surface projection virtual transparent observation inner cavity method in a minimally invasive surgery provided by an applicant. As a core part of a doctor visual angle tracking method in the method, a solid theoretical foundation is laid for obtaining a more real virtual abdominal cavity transparent effect and meeting the requirement of a doctor for assisting in observing an inner cavity in a common minimally invasive surgery on the premise that the doctor and the operation environment are not influenced.

The invention discloses a method for detecting a single-pixel blood vessel, and belongs to the technical fields of medicine, three-dimensional imaging, digital image processing and the like. Accordingto the method, Frangi blood vessel characteristic F characteristic parameters are calculated firstly, then the Frangi blood vessel characteristic quantity F is replaced with a blood vessel characteristic center line, and finally in order to overcome a large number of misjudgments caused by microvessels or background noise, the center line R is calculated in a weighted mode; according to the method for detecting the single-pixel blood vessel, a weighted calculation center line is adopted, so that the influence of microvessel and background noise can be inhibited; the technology is applied to abody surface projection virtual transparent observation inner cavity method in a minimally invasive surgery provided by an applicant. As a core part of the three-dimensional modeling method for the inner cavity in the method, the method lays a solid theoretical foundation for obtaining a more real virtual abdominal cavity transparent effect and meeting the requirement of doctors for assisting inobserving the inner cavity in a common minimally invasive surgery on the premise of not influencing the doctors and the operation environment.

The invention discloses a device and a method for measuring the characteristic impedance and the complex wave number of an acoustic material. The device comprises an acoustic tube, an impulsive sound source, a microphone, a power amplifier, a signal conditioner, an adapter and a data acquisition device, wherein the acoustic tube consists of a section of large-diameter cylindrical tube, a conical tube and a small-diameter cylindrical tube which are fixedly connected with one another coaxially; three through holes which are vertical to the center axis of the small-diameter cylindrical tube are formed in the side wall of the small-diameter cylindrical tube; the impulsive sound source is arranged in the large-diameter cylindrical tube; and a back cover is in threaded connection with the outer end of the small-diameter cylindrical tube. The method comprises the following steps of: firstly, acquiring a frequency response function of a whole measuring system; secondly, acquiring required excitation signals of the impulse sound source, and exciting the measurement of the impulsive sound source to obtain sound pressures and vibration velocities of front and rear end surfaces of a sample to be tested; and finally, calculating the characteristic impedance and the complex wave number of the sample to be tested. By adopting the method, the problem that the measurement at a low-frequency band is not accurate enough when the characteristic impedance and the complex wave number of a high-flow-resistance material are measured by using the conventional double-cavity method and the conventional double-thickness method is solved.

The invention relates to a wide-strip-shaped semiconductor laser cavity mode selecting method, belongs to the technical field of laser and aims to solve the problem that the beam quality of a wide-strip-shaped large-power semiconductor laser cannot be effectively improved and the application of the wide-strip-shaped large-power semiconductor laser is limited in the prior art. The method is characterized in that a volume grating outer cavity method is used, the inner cavity transverse mode of a wide-strip-shaped large-power semiconductor laser chip which is subjected to fast axis collimation is selected through the narrow-angle beam feedback of the high-reflection volume grating of grating plane normal inclination, and an annular mode in double-peak far field distribution is allowed to receive effective outer cavity feedback; due to the fact that one of the far field peaks is limited by the high-reflection output of the volume grating, single-peak far field lasing is achieved, and the beam quality of the wide-strip-shaped large-power semiconductor laser is improved. The method is applicable to the manufacturing of various wide-strip-shaped large-power semiconductor lasers.

The present invention provides a method to measure antenna efficiency using the cavity method. In particular, the present invention provides a tunable cavity that can be tuned to avoid the anti resonance and antenna-cavity coupling problems. In particular, tuning probes and/or variable volumetric sizing of the cavity are used to tune the cavity to avoid the anti resonance and antenna-cavity coupling.

The invention discloses a single-sided reflow no-cavity method of a double-sided board. During single-sided reflow, the front side of a PCB (Printed Circuit Board) double-sided board faces upwards, and the spherical surface of the PCB double-sided board faces downwards. The method comprises the following specific steps: a: revising steel mesh trepanning design, and adopting X-shaped steel mesh trepanning; b: setting a flow soldering temperature curve, adopting RTS type or RSS type profile, and using a reflow soldering machine, wherein 10 warm areas and 2 cooling areas are jointly arranged, and speed is 30-39inch/min; c: regulating dipping time, and adopting 75-85 seconds. Through the above way, the single-sided reflow no-cavity method of the double-sided board is characterized in that double-sided reflow is changed in to single-sided reflow, two production lines are changed into one production line, and production efficiency is improved. Meanwhile, under the situation of single-sided reflow, a cavity ratio is enabled to be consistent with or approach to a double-sided reflow effect and meet an IPC (Institute Of Printed Circuits)610*standard.

The invention relates to a lossless detection method for the water of activity plant using the electromagnetic wave technique. It includes following steps: 1, the strong interaction region of the electromagnetic wave and the object to be measured is provided; 2, the computer reads the output voltage in the resonance region without the resonance frequency and the electromagnetic wave signal of the object to be measured, calculate the resonance frequency and Q value, list and store in the computer, and finish the preparation course of test; 3, the computer reads the output voltage in the resonance region with the resonance frequency and the electromagnetic wave signal of the object to be measured, calculate the resonance frequency and Q value, list and store in the computer, and finish the preparation course of test; 4, the change of water content can be inversed according to the output voltage of the resonance frequency and the electromagnetic wave signal in step 3 and step 4. The invention could detect the change of water content of the root, caudex and leaf to monitor the change of water content, and it has high measurement accuracy, wide measured range and not effect by the measuring force.

The invention discloses a device and a method for measuring haze main components by using an optical fiber active inner cavity method. The invention polymerizing haze by the haze generator, haze gas loses activity after polymerization, and then sensing a specific gas in a mixed gas by a fiber sensor and a Bragg grating so as to determine a concentration of the corresponding gas, according to the device and method for measuring haze main components by using optical fiber active inner cavity method, synchronous measurement can be realized, and each measurement instrument does not need to be corrected by using standard membrane or standard gas to instrument, only need to change the gas in the gas box at a time, and the other measurement instruments do not need to be corrected, and the purposeof repeated use of the main instrument of the system can be achieved.

The invention discloses a method for performing tissue culture inoculation through an inoculation box. A clean bench is replaced by the self-made cuboid or prismatic-table-shaped inoculation box for inoculation; the inoculation is performed with a cavity method as follows: one horizontally placed tissue culture bottle is firstly inoculated, then the pressure of wall space is formed through the tissue culture bottles, one tissue culture bottle is pulled out, the tissue culture bottle with seedlings inoculated is placed in a cavity, the next tissue culture battle is inoculated, and the process is repeated until the inoculation is finished. The inoculation efficiency is 2-3 times higher than that of the clean bench, in addition, the contamination rate is very low, and the lowest contamination rate is up to 1/1000.

Methods of manufacturing an electronic device formed in a cavity may include providing a first substrate having a first side wall including a first metal formed along a periphery on a bottom surface thereof and surrounding an electronic circuit disposed on the bottom surface, providing a second substrate having a second side wall including a second metal and a third metal formed along a periphery on a top surface thereof, aligning the first substrate with the second substrate with the first side wall opposing and contacting the second side wall to internally define a cavity between the bottom surface of the first substrate, the top surface of the second substrate, the first side wall ,and the second side wall, and heating and bonding the first substrate and the second substrate by transient liquid phase bonding.