78results about How to "Little difference" patented technology

Preparing brominated styrenic polymer by maintaining a mixture formed from (i) brominating agent, (ii) a solvent solution of styrenic polymer, and (iii) aluminum halide catalyst, at −20 to +20° C., and terminating bromination in 20 minutes or less. New brominated anionic styrenic polymers have better melt flow and/or lower initial ΔE values than the best previously-known brominated anionic styrenic polymers. Other features of such new polymers include high thermal stabilities at 320° C. and/or very low initial color values. Brominated styrenic polymers, especially brominated anionic styrenic polymers, are useful as flame retardants for thermoplastic polymers.

The invention relates to an integrated type inductor and a manufacture method thereof. The inductor includes a press forming metal magnetic powder block and an inductance coil which comprises a coil body and two terminals; the coil body is formed by a metal enameled wire and is internally embedded in the metal magnetic powder block; the terminals are respectively positioned outside two sides of the metal magnetic powder block; and the coil body is a two-way spiral structure. The invention also provides a manufacture method of the inductor. The inductor which can be widely used in various circuits has the advantages of small volume, high efficiency, large saturation current, wide frequency, and steady product quality.

The invention discloses a method and apparatus for displaying an electronic map, for solving the problem that an electronic map in the prior art moves stiff so that the displaying effect of the electronic map is bad. The method comprises the steps: acquiring the three dimensional coordinates of an initial position point and a target position point in an electronic map; according to the three dimensional coordinates of the initial position point and the target position point, determining the three dimensional coordinates of key nodes; according to the three dimensional coordinates of the initial position point, the target position point and the key nodes, generating a space curve which successively connects the initial position point, the target position point and the key nodes; according to the preset map display duration, movement function and screen brushing time interval, determining the moving points in the space curve, and taking the target position point as one moving point; and taking the initial position point as the starting point, along the space curve, successively taking the moving points as the center point, and displaying the electronic map.

The invention discloses a morphology compensation type double-optical-axis linear displacement laser interferometer calibration method and device, and belongs to the technical field of laser measurement. A calibrated laser interferometer measurement light beam is caused to pass through a middle through hole of a double-axis hollow laser interferoscope group and is arranged on the center position of two parallel standard measurement light beams in parallel; in a plane vertical to the two standard measurement light beams, the difference of the environment interference degree between the two standard measurement light beams and the calibrated laser interferometer measurement light beam is small in a line segment area formed by the two standard measurement light beams in the plane projection points; the air refractive index average value of the two standard measurement light beams is approximate to the air refractive index value of the calibrated laser interferometer measurement light beam; a measurement error caused by the surface morphology of a target reflecting mirror reflecting surface is compensated into a linear displacement measurement result to guarantee the accuracy of a linear displacement measurement value.

This invention relates to a planar optical component and a design method thereof, the method including designing a structure with defined discrete phases; based on the structure with defined discrete phases as array elements, designing a 2D thin antenna array; constituting the planar optical component by a metal film having the 2D thin antenna array and a substrate. To achieve expected beam shaping effect, the method according to the embodiment of the present invention modulates structural parameters of antenna array elements to modulate the amplitude and phase of radiation field having vertical polarization states, which is excited by a beam having specific wavelengths and polarization states incident on the planar diffractive optical component. The planar diffractive optical component according to the embodiment of the present invention has little difference from expected parameters, and can achieve optimum beam shaping effect to make up the shortfall of conventional beam shaping elements.

The invention discloses a morphology compensation type three-optical-axis linear displacement laser interferometer calibration method and device, and belongs to the technical field of laser measurement. A calibrated laser interferometer measurement light beam is caused to pass through a middle through hole of a three-axis hollow laser interferoscope group and is arranged on the center position of three parallel standard measurement light beams distributed in a regular triangular prism side edge mode in parallel; in a plane vertical to the three standard measurement light beams, the difference of the environment interference degree between the three standard measurement light beams and the calibrated laser interferometer measurement light beam is small in an equilateral triangle area formed by the projection points of the three standard measurement light beams in the plane; the air refractive index average value of the three standard measurement light beams is approximate to the air refractive index value of the calibrated laser interferometer measurement light beam; a measurement error caused by the surface morphology of a target reflecting mirror reflecting surface is compensated into a linear displacement measurement result to guarantee the accuracy of a linear displacement measurement value.

The present invention discloses a manufacture method of steamed oat grains. The method is as follows: oats are cleaned, hairs are removed, the treated oats are soaked for a first time using a mixed aqueous solution of citric acid, calcium hydrogen phosphate and calcium dihydrogen phosphate, the soaked oats are then steamed, then the oat grains are subjected to a shelling, then the shelled oats are soaked for a second time using a sodium chloride aqueous solution, and finally the soaked oat grains are subjected to a hot steam treatment. Compared with the prior art, the manufacture method improves a nutritional value of the oat grains and is simple in operations. The prepared product has advantages of being convenient in consumption and superior in taste compared with the existing product.

The invention relates to a method and a device for calibrating a morphology compensation type four-optical-axis angular displacement laser interferometer and belongs to the technical field of laser measurement. According to the invention, four measurement beams of the calibrated laser interferometer pass through a middle through hole of a four-axis hollow laser interference mirror set and the four measurement beams of the calibrated laser interferometer are placed in parallel at the middle positions among four parallel standard measurement beams; vertical distances between the standard measurement beams and the measurement beams of the calibrated laser interferometer are very small and the air refractive indexes of the standard measurement beams are very approximate to those of the measurement beams of the calibrated laser interferometer; a measurement displacement error caused by the surface morphology of the reflecting surface of a target reflector is compensated into an angular displacement measurement result so as to ensure accuracy of an angular displacement measurement value.

The invention relates to a method and a device for calibrating an optically biaxial compensation and gas bath type linear displacement laser interferometer and belongs to the technical field of laser measurement. According to the invention, a measurement beam of the calibrated laser interferometer passes through a middle through hole of a biaxial hollow laser interference mirror set and the measurement beam of the calibrated laser interferometer is placed in parallel at the middle position between two parallel standard measurement beams; vertical distances between the standard measurement beams and the measurement beam of the calibrated laser interferometer are very small and the average value of the air refractive indexes of the two standard measurement beams is approximate to the value of the air refractive index of the measurement beam of the calibrated laser interferometer; a stable gas bath environment formed by a gas bath device enables the air temperature, the humidity and the air pressure to be approximately and uniformly distributed and enables the average value of the air refractive indexes of the two standard measurement beams to be more approximate to the value of the air refractive index of the measurement beam of the calibrated laser interferometer; and a measurement error caused by the surface morphology of the reflecting surface of a target reflector is compensated into a linear displacement measurement result so as to ensure accuracy of the linear displacement measurement value.

The invention provides an angular displacement laser interferometer calibration method and an angular displacement laser interferometer calibration device based on two standard optical axes, and belongs to the technical field of laser measurement. Two measuring light beams of a laser interferometer to be calibrated pass through a middle through hole of a two-axis hollow laser interference mirror group, and are parallelly arranged in the center position of two parallel standard measuring light beams; in a line segment region formed by the two standard measuring light beams at the plane projection points, the differences of environment interference degrees of the two standard measuring light beams and the two measuring light beams of the laser interferometer to be calibrated are very small, and the air refractive index average value of the standard measuring light beams is approximate to the air refractive index value of the measuring light beams of the laser interferometer to be calibrated.

The invention relates to the field of circuit fault detection and provides a method and system for fault positioning of a contact net. The method comprises the steps that currents and electric fields in a circuit of the contact net are sampled by a detector; sampling values of the current and sampling values of the electric filed are sent to a communication terminal; a trigger instruction is sent to the communication terminal when the detector detects that current changes in the contact net satisfy a first preset condition; after the communication terminal receives the trigger instruction, whether a fault takes place in the circuit of the contact net is determined according to the sampling values of the current and the sampling values of the electric field in the contact net which are sent by the detector; fault information is sent to monitoring equipment when the communication terminal determines that the fault takes place in the circuit of the contact net; and the monitoring equipment receives the fault information and determines an occurrence position of the fault in the contact net according to position information of the communication equipment which sends the fault information. The method and system for the fault positioning of the contact net provided by the invention can avoid utilization of travelling wave detection equipment so as to reduce cost; and the method and system are only slightly influenced by differences in manufacturers, models and relevant accessory equipment of the contact net circuit, so that accuracy of the fault positioning is increased.

The present invention relates to a truncated L1 protein of Human Papillomavirus (HPV) Type 33, a sequence encoding the same, a method for preparing the same, and a virus-like particle comprising the same, wherein the protein and the virus-like particle are useful for preventing HPV (particularly HPV33) infection, and a disease caused by HPV (particularly HPV33) infection, such as cervical cancer. The invention also relates to the use of the protein and the virus-like particle in the preparation of a pharmaceutical composition or a vaccine for preventing HPV (particularly HPV33) infection, and a disease caused by HPV (particularly HPV33) infection, such as cervical cancer.

The invention discloses a three-optical axis compensation and air bath type linear displacement laser interferometer calibration method and a three-optical axis compensation and air bath type linear displacement laser interferometer calibration device, and belongs to the technical field of laser measurement. Measurement light beams of a calibrated laser interferometer penetrate through a middle through hole of a three-axis hollow laser interference mirror group, and are arranged in parallel at the central positions of three parallel standard measurement light beams which are distributed as side edges of a regular triangular prism; the standard measurement light beams are at short perpendicular distances away from the measurement light beams of the calibrated laser interferometer, and an average air refractivity value of the three standard measurement light beams is approximate to air refractivity values of the measurement light beams of the calibrated laser interferometer; air temperature, air humidity and air pressure in a stable air bath environment formed by an air bath device are approximately uniformly distributed, so that the average air refractivity value of the three standard measurement light beams is more approximate to the air refractivity values of the measurement light beams of the calibrated laser interferometer; a measurement error caused by the surface appearance of the reflecting surface of a target reflector is compensated into a linear displacement measurement result to ensure the accuracy of a linear displacement measurement value.

The invention discloses a four-optical axis returning and air bath type angular displacement laser interferometer calibration method and a four-optical axis returning and air bath type angular displacement laser interferometer calibration device, and belongs to the technical field of laser measurement. Four measurement light beams of a calibrated laser interferometer penetrate through a middle through hole of a four-axis hollow laser interference mirror group, and are arranged in parallel at the middle positions of four parallel standard measurement light beams; the standard measurement light beams are at short perpendicular distances away from the measurement light beams of the calibrated laser interferometer, and air refractivity values of the standard measurement light beams are approximate to those of the measurement light beams of the calibrated laser interferometer; air temperature, air humidity and air pressure in a stable air bath environment formed by an air bath device are approximately uniformly distributed, so that the air refractivity values of the standard measurement light beams are more approximate to those of the measurement light beams of the calibrated laser interferometer; and a micromotion device is used for performing real-time returning compensation on a target reflector according to an average value of derived displacement measured by four light beam position detectors to keep the incident positions of the measurement light beams on the reflecting surface of the target reflector unchanged.

The invention provides a linear displacement laser interferometer calibration method and a linear displacement laser interferometer calibration device based on three standard optical axes, and belongs to the technical field of laser measurement. A measuring light beam of a laser interferometer to be calibrated passes through a middle through hole of a three-axis hollow laser interference mirror group, and is parallelly arranged in the center position of three parallel standard measuring light beams distributed in a regular triangular prism side edge form; in a plane vertical to the three standard measuring light beams, in an equilateral triangle region formed by the three standard measuring light beams at plane projection points, the differences of environment interference degrees of the three standard measuring light beams and the measuring light beam of the laser interferometer to be calibrated are very small, and the air refractive index average value of the three standard measuring light beams is approximate to the air refractive index value of the measuring light beam of the laser interferometer to be calibrated.

The invention relates to a method and a device for calibrating a morphology compensation type four-optical-axis linear displacement laser interferometer and belongs to the technical field of laser measurement. According to the invention, a measurement beam of the calibrated laser interferometer passes through a middle through hole of a four-axis hollow laser interference mirror set and the measurement beam of the calibrated laser interferometer is placed in parallel at the middle position among four parallel standard measurement beams distributed in a side edge form of a regular quadrangular prism; in a plane vertical to the four standard measurement beams and in a square region formed by projection points of the four standard measurement beams in the plane, difference between the degrees that the four standard measurement beams and the measurement beam of the calibrated laser interferometer are interfered by the environment is small and the average value of the air refractive indexes of the four standard measurement beams is approximate to the value of the air refractive index of the measurement beam of the calibrated laser interferometer; a measurement error caused by the surface morphology of the reflecting surface of a target reflector is compensated into a linear displacement measurement result so as to ensure accuracy of a linear displacement measurement value.

The invention discloses a linear displacement laser interferometer calibrating method and device based on a four-standard optical axis, and belongs to the technical field of laser measurement. Measuring light beams of a calibrated laser interferometer pass through the middle through hole of a four-axle hollow laser interference mirror group; the measuring light beams of the calibrated laser interferometer are arranged in parallel in the centers of four parallel standard measuring light beams which are distributed in the forms of lateral edges of a regular quadrangular prism; in a plane vertical to the four standard measuring light beams and in a square area formed by the projection points of the four standard measuring light beams on the plane, the difference between the environment interference degrees of the four standard measuring light beams and the measuring beams of the calibrated laser interferometer is very small, and the average value of the refractive indexes of the four standard measuring light beams is close to the air refractive index values of the measuring light beams of the calibrated laser interferometer.

The invention provides a data acquisition device and a method for assisting the medical and aesthetic cosmetic industry by using the same. The data acquisition device comprises a camera, an annular hollow support for fixing the camera and a support fixing part for fixing the annular hollow support, wherein the annular hollow support comprises a first part, second parts, a third part and a fixed frame, openings are respectively formed in the two ends of the first part, and a first lens for reflecting a light ray from the direction of a left face and a second lens for reflecting a light ray fromthe direction of a right face are respectively arranged in the openings; a third lens capable of rotational adjustment is arranged in the fixed frame and is used for reflecting the reflected light ray of the first lens and the reflected light ray of the second lens to the camera. The overlapping parts of a front face image, the left face image and the right face image acquired by the data acquisition device can be corresponding one by one in a later synthetic image, a synthetic three-dimensional model is less different from a real person, and further simulation results are more realistic.

The invention provides a reset compensation type three-optical-axis linear displacement laser interferometer calibration method and a reset compensation type three-optical-axis linear displacement laser interferometer calibration device, and belongs to the laser measurement technology. A measuring light beam of a laser interferometer to be calibrated passes through a middle through hole of a three-axis hollow laser interference mirror group, and is parallelly arranged in the center position of three parallel standard measuring light beams distributed in a regular triangular prism side edge form, the vertical distance from the standard measuring light beams to the measuring light beam of the laser interferometer to be calibrated is very small, the air refractive index average value of the three standard measuring light beams is approximate to the air refractive index value of the measuring light beam of the laser interferometer to be calibrated, three light beam position detectors respectively measure the derivative displacement of the three standard measuring light beams relative to a target reflecting mirror in a plane vertical to the standard measuring light beams in any two-dimensional directions, a micro inching device measures the derivative displacement average value according to the three light beam position detectors, the real-time reset compensation is carried out on the derivative displacement of the target reflecting mirror, and the incidence position of the measuring light beams on the reflecting surface of the target reflecting mirror is enabled not to be changed.

The invention provides a reset compensation type two-optical-axis linear displacement laser interferometer calibration method and a reset compensation type two-optical-axis linear displacement laser interferometer calibration device, and belongs to the technical field of laser measurement. A measuring light beam of a laser interferometer to be calibrated passes through a middle through hole of a two-axis hollow laser interference mirror group, and is parallelly arranged in the center position of two parallel standard measuring light beams, the vertical distance from the standard measuring light beams to the measuring light beam of the laser interferometer to be calibrated is very small, the air refractive index average value of the two standard measuring light beams is approximate to the air refractive index value of the measuring light beam of the laser interferometer to be calibrated, two light beam position detectors respectively measure the derivative displacement of the two standard measuring light beams relative to a target reflecting mirror in a plane vertical to the standard measuring light beams in any two-dimensional directions, a micro inching device measures the derivative displacement average value according to the two light beam position detectors, the real-time reset compensation is carried out on the derivative displacement of the target reflecting mirror, and the incidence position of the measuring light beams on the reflecting surface of the target reflecting mirror is enabled not to be changed.

The invention discloses an angular displacement laser interferometer calibrating method and device based on a dual-standard optical axis gas bath, and belongs to the technical field of laser measurement. Two measuring light beams of a calibrated laser interferometer pass through the middle through hole of a dual-axle hollow laser interference mirror group; the two measuring light beams of the calibrated laser interferometer are arranged in parallel between two parallel standard measuring light beams; the vertical distances between the standard measuring light beams and the measuring light beams of the calibrated laser interferometer are very small; the air refractive index values of the standard measuring light beams are very close to those of the measuring light beams of the calibrated laser interferometer; a stable gas bath environment is formed by a gas bath device, so that the air temperature, moisture and air pressure are uniformly distributed approximately, and the air refractive index values of the standard measuring light beams are even closer to those of the measuring light beams of the calibrated laser interferometer.

The invention provides a linear displacement laser interferometer calibration method and a linear displacement laser interferometer calibration device based on a two-standard-optical-axis air bath, and belongs to the technical field of laser measurement. A measuring light beam of a laser interferometer to be calibrated passes through a middle through hole of a two-axis hollow laser interference mirror group, and is parallelly arranged in the center position of two parallel standard measuring light beams; the vertical distance from the standard measuring light beams to the measuring light beam of the laser interferometer to be calibrated is very small, the differences of environment interference degrees of the two standard measuring light beams and the measuring light beam of the laser interferometer to be calibrated are very small, and the air refractive index average value of the two standard measuring light beams is approximate to the air refractive index value of the measuring light beam of the laser interferometer to be calibrated; through the stable air bath environment formed by an air bath device, the air temperature, the humidity and the air pressure are approximate to uniform distribution, so the air refractive index average value of the two standard measuring light beams is more approximate to the air refractive index value of the measuring light beam of the laser interferometer to be calibrated.

The invention discloses a linear displacement laser interferometer calibrating method and device based on a four-standard light-axis gas bath, and belongs to the technical field of laser measurement. Measuring light beams of a calibrated laser interferometer pass through the middle through hole of a four-axle hollow laser interference mirror group; the measuring light beams of the calibrated laser interferometer are arranged in parallel in the centers of four parallel standard measuring light beams which are distributed in the forms of lateral edges of a regular quadrangular prism; the vertical distances between the standard measuring light beams and the measuring light beams of the calibrated laser interferometer are very small; the difference between the environment interference degrees of four standard measuring light beams and the measuring beams of the calibrated laser interferometer is very small; the average value of the refractive indexes of the four standard measuring light beams is close to the air refractive index values of the measuring light beams of the calibrated laser interferometer; a stable gas bath environment is formed by a gas bath device, so that the air temperature, moisture and air pressure are uniformly distributed approximately, and the average value of the air refractive indexes of the standard measuring light beams are even closer to the air refractive index values of the measuring light beams of the calibrated laser interferometer.

The invention provides a linear displacement laser interferometer calibration method and a linear displacement laser interferometer calibration device based on two standard optical axes, and belongs to the technical field of laser measurement. A measuring light beam of a laser interferometer to be calibrated passes through a middle through hole of a two-axis hollow laser interference mirror group, and is parallelly arranged in the center position of two parallel standard measuring light beams; in a plane vertical to the two standard measuring light beams, in a line segment region formed by the two standard measuring light beams at the plane projection points, the differences of environment interference degrees of the two standard measuring light beams and the measuring light beam of the laser interferometer to be calibrated are very small, and the air refractive index average value of the two standard measuring light beams is approximate to the air refractive index value of the measuring light beam of the laser interferometer to be calibrated.