40results about How to "Small energy attenuation" patented technology

The invention belongs to the technical field of chemical printing ink, and specifically relates to an aqueous toughened glass printing ink dedicated for touch screen and a preparation method thereof. The aqueous toughened glass printing ink is prepared from the following raw materials in parts by weight: 6 to 28 parts of inorganic pigment, 20 to 50 parts of first glass powder frit, 10 to 40 parts of second glass powder frit, 10 to 60 parts of aqueous varnish, 0 to 2 parts of wetting dispersant, 0 to 1 part of antifoaming agent, and 0 to 2 parts of leveling agent. The printing ink can improve the surface acoustic wave signal transduction performance of touch screen glass, solves the problem that after surface acoustic waves go through tough screen glass, the signal attenuates, and has the advantages that the covering performance of the printing ink is good, the surface acoustic wave propagation speed is quick, the energy attenuation is little, no phase change happens, and the corrosion of the printing ink is weak.

The invention relates to an infrared polarization imaging measuring device based on a rotating polarizer. The device comprises an infrared optical lens, a multi-directional polarizing unit, an infrared focal plane detector and a control unit. The infrared optical lens adjusts the polarized light of a target scene to acquire a detecting beam. The multi-directional polarizing unit acquires polarizedbeams with different polarizing directions by changing the polarizing direction of the detecting beam. The infrared focal plane detector images the polarized beams of different polarizing directionsto acquire the infrared intensity images of the polarized beams of different polarizing directions and output the images. The control unit is used to control the multi-directional polarizing unit to sequentially change the polarizing direction, so that the infrared focal plane detector can acquire the infrared intensity images of the polarized beams of different polarizing directions, which are corresponding to the sequentially changing polarization direction, at a predetermined frame rate. The device provided by the invention can be used to measure the moving or changing target scene.

The invention provides a multi-component and single-core-shell structured positive electrode material of a lithium ion battery. The positive electrode material comprises a shell and a core arranged in the shell, wherein the core comprises at least two kinds of components; the material of each component is selected from one kind of a positive electrode active material with a laminated structure, a positive electrode active material with a spinel structure, and a positive electrode active material with an olivine structure; the material of the shell is selected from at least two kinds of the materials selected from the positive electrode active material with the laminated structure, the positive electrode active material with the spinel structure, and the positive electrode active material with the olivine structure; the positive electrode active material with the laminated structure comprises <x>Li<2>MO<3>.(1-x)LiMO<2>, wherein x is greater than or equal to 0 and less than 1; the positive electrode active material with the spinel structure comprises LiM<2>O<4>; and the positive electrode active material with the olivine structure comprises LiMPO<4>, wherein M is selected from one or more of metal elements with the atomic number of greater than six. The invention also provides a preparation method for the positive electrode material of the lithium ion battery.

The invention relates to a compensation method for improving color shadow in digital images, which is used for correcting the luminance difference of each area in the digital images caused by color shadow in the digital images. The compensation method comprises the following steps of: retrieving the color lump images of uniform color lumps; calculating the horizontal compensation coefficients of a plurality of horizontal areas of the color lump images; carrying out linear interpolation on the horizontal compensation coefficients to generate corresponding horizontal interpolation coefficients and calculating to obtain the decision horizontal correction coefficients corresponding to all horizontal areas, respectively; calculating the vertical compensation coefficients of a plurality of vertical areas of the color lump images; multiplying the decision horizontal correction coefficients with the vertical compensation coefficients to obtain the color shadow compensation coefficients of the areas of the color lump images, respectively; and multiplying the average luminance values of the areas of the color lump images with corresponding color shadow compensation coefficients, respectively to compensate the color shadow for the color lump images.

The invention discloses a quick enzyme inactivation method and belongs to the technical field of agricultural product processing. The method comprises the following steps: performing far-infrared radiation and contact ultrasonic treatment on a material to be treated, wherein the distance between a far-infrared radiation source and the material to be treated is 5-10 cm, the far-infrared radiation power is 500-1,000 W, the peak wavelength is 5-15 microns, the contact ultrasonic power is 400-800 W, and the frequency is 20-100 kHz. According to the method, a power ultrasound process is combined with a far-infrared radiation process, the processes of quickly inactivating enzyme and effectively inhibiting enzymatic browning are performed by cavitation, mechanical and impact effects of ultrasonic waves and heat and spectrum effects of far-infrared radiation, 90% of polyphenol oxidase in the material is inactivated after the material is subjected to enzyme inactivation for 1-3 minutes, and the color difference of the material subjected to enzyme inactivation is only 0.58-1.12. The method is suitable for agricultural products such as honeysuckle unsuitable for conventional blanching, stewing or chemical enzyme inactivation.

The invention relates to a random polarized laser splitting device and method. A laser output light path is provided with a first three-dimensional PBS (Polarization Beam Splitter); a first total reflection mirror and a second total reflection mirror are arranged at a light beam transmission output end and a light beam reflection output end of the first three-dimensional PBS respectively; a light beam reflection output end of each total reflection mirror is provided with a second three-dimensional PBS; a horizontal emergent end of the second three-dimensional PBS is provided with a third half lambda slide and a third three-dimensional PBS; a horizontal emergent end of the third three-dimensional PBS is provided with a fourth half lambda slide and a fourth three-dimensional PBS; a vertical emergent end of the fourth three-dimensional PBS is provided with a power meter; a vertical emergent end of the second three-dimensional PBS, a vertical emergent end of the third three-dimensional PBS and the vertical emergent end of the fourth three-dimensional PBS are provided with a quarter lambda slide and a focusing mirror respectively. Accordingly, the control accuracy of the beam splitting energy can be significantly improved and the expansion of the number of the beam splitting is facilitated.

The invention discloses a deep venous embolism prevention and treatment apparatus and belongs to the medical equipment field. The apparatus includes a control device and a treatment device; the control device and the treatment device are connected through a connecting component; the treatment device wraps an affected area; the treatment device comprises a fixing area and a treatment area; one or a plurality of air chambers are arranged between the outer layer and inner layer of the treatment area; a plurality of optical light-emitting heads are embedded in each air chamber; conductive rubber is pressed on one side of the treatment area which faces the affected area; one side of the inner layer of the treatment area, which faces the affected area, is provided with windows matched with the optical light-emitting heads; and the inner layer of the treatment area includes a full-transparent silica gel layer. With the deep venous embolism prevention and treatment apparatus of the invention adopted, three kinds of deep vein embolism prevention and treatment methods can be adopted to perform simultaneous treatment, and therefore, time can be saved for doctors and patients, and treatment effects are better.

The invention belongs to the technical field of electric welding machines, and particularly relates to an arc striking device of an electric welding machine and an arc striking method thereof. The arcstriking method comprises the following steps that S1, workpieces to be welded are placed on a base I, and the workpieces are pressed through a fixing plate; the distance between the two workpieces is adjusted through an air cylinder III; and test blocks made of the same material are placed in a test clamping groove; S2, on the basis of S1, a power supply is switched on, an arc striking box is started, a tungsten electrode is controlled to be close to the test blocks, and the arc striking effect is tested; S3, after S2 is completed, the test blocks are taken down, and the distance between thetungsten electrode and the workpieces is adjusted; S4, on the basis of S3, the angle of the welding position of the tungsten electrode and the workpieces is adjusted; and S5, whether a welding wire is used or not is selected according to the material of the welding workpieces, and when the welding wire is used, the welding wire is sent to a welding position, a motor is controlled to operate, a protection plate is enabled to be close to the tungsten electrode, and protective gas is introduced and released. The arc striking device is good in arc striking effect, stable in work, reliable in performance and safe to use.

The invention discloses a GIS shell defect detection method based on magnetostriction torsional guided waves. The method comprises the steps: selecting a position of a GIS shell, and installing an excitation band at the position; fixing a detection type sensor to the excitation band, and carrying out defect overall screening on the GIS shell through the detection type sensor; and accurately positioning the defects of the GIS shell along the surface of the excitation band by using a scanning sensor. In the embodiment of the invention, the problems of complicated instrument operation steps, lowdetection sensitivity and difficulty in accurately positioning the defects are solved, and the electrified detection of the defects of the GIS shell is realized.

The invention discloses an epitaxy GaN parallel type PIN type alpha irradiation battery and a manufacturing method of the epitaxy GaN parallel type PIN type alpha irradiation battery. The epitaxy GaN parallel type PIN type alpha irradiation battery mainly solves the problem that the current nuclear battery energy conversion rate and output power are low and comprises an upper PIN node, a lower PIN node and alpha irradiation sources, the upper PIN node and the lower PIN node are in parallel connection, the lower PIN node sequentially comprises an N-type ohmic contact electrode, an N-type highly-doped 4H-SiC substrate, an N-type lowly-doped SiC epitaxial layer, a P-type highly-doped GaN epitaxial layer and a P-type ohmic contact electrode from bottom to top, and the bottom-to-top structural distribution of the upper PIN node is the same as that of the lower PIN node. A plurality of grooves are formed in each PIN node, the alpha irradiation sources are arranged in the grooves respectively, the two PIN nodes are in contact through the P-type ohmic contact electrode, and the upper grooves and the lower grooves are in mirror symmetry and are communicated. The epitaxy GaN parallel type PIN type alpha irradiation battery has the advantages that the contact area between the irradiation sources and a semiconductor is large, the utilization and the energy collecting rate of the nuclear raw materials are high, and the output voltage of the battery is high, and a microcircuit can be constantly powered up.

The invention discloses an epitaxy GaN PIN structure beta irradiation battery and a preparation method thereof. At present, a beta irradiation battery has problems of low energy transformation ratio and low output power, and the invention is mainly used to solve the problems. The implementation of the epitaxy GaN PIN structure beta irradiation battery comprises the following steps: an N-type lightly-doped SiC epitaxial layer and a P-type highly-doped GaN epitaxial layer are grown on a cleaned 4H-SiC substrate successively in the epitaxial growth manner; a P-type Ti/Au ohmic contact electrode is then deposited onto the P-type highly-doped GaN epitaxial layer, and an Ni contact electrode is deposited onto the back surface of the SiC substrate which does not undergo the epitaxy growth; and then, a trench window is formed in the P-type Ti/Au electrode through lithography, and trenches are etched; and finally, a beta radiation source is placed into each trench to obtain the epitaxy GaN PIN structure beta irradiation battery. According to the invention, the fabricated battery has advantages of large radiation source and semiconductor contact area, high nuclear raw material utilization rate and energy collection rate, and large battery output current and voltage, and the battery can be used to supply power to a small circuit in a lasting manner or supply power in unattended occasions which need to be powered for a long time.

The invention relates to a sound wave warning method, system and device and a storage medium, the method is used for a sound wave warning device, the sound wave warning device comprises a loudspeaker capable of adjusting the size of a cone opening, and the method comprises the following steps: determining the distance between a target event and the sound wave warning device; determining the size of the opening of the cone based on the distance, and giving an alarm based on the sound wave warning device; wherein the size of the opening of the cone corresponds to the distance, so that sound waves can be transmitted in a small range in a concentrated manner, energy attenuation of the sound waves is reduced, noise influence on a non-target area is reduced, and the problems that in the prior art, sound wave alarm is spread all around, sound wave energy is rapidly attenuated, and noise influence is large are solved.

The invention discloses a double-arc Chinese zither in the field of plucked instruments. The double-arc Chinese zither includes a hollow resonance body consisting of a face plate of upper part, a base plate of lower part, end plates at two ends and front and back side plates. Three ways of bass bars are vertically arranged in the resonance body with a certain spaced distance; a sound hole is arranged in the base plate; the face plate presents upward and raised arc transition from the front side plate to the back side plate and is provided with a Chinese zither horse, a plurality of strings are erected on the Chinese zither horse and fixed with the resonance body at two ends; the diameter of strings gradually thins from the front side plate to the back side plate; and the base plate also presents upward and raised arc transition from the front side plate to the back side plate. In fabrication, the base plate is formed by bending a flat plate, after the Chinese zither is made, the upper surface of the base plate is in a stretching and tension state, has stronger elasticity and can cause sound wave to be better reflected and resounded in the resonance body; acoustic energy attenuates slightly for long time; as the base plate can better coordinate with the face plate for resonance, the timbre of the Chinese zither becomes clearer and more far-reaching, mellower and more lingering. According to the technical proposal, a high-grade Chinese zither can be made.

The invention discloses a half-duplex communication device based on a lamb wave and a communication method thereof. The half-duplex communication device based on the lamb wave comprises the components of a sensor master control module, a first signal processing circuit, a first transducer, a metal sheet member, a second transducer, a second signal processing circuit and a controller. According to the half-duplex communication device, the lamb wave in the metal sheet member is used as a signal carrier; the metal sheet member is used as a transmission medium; half-duplex communication is performed in a wireless manner; and a communication function is supplied for a data result of a sensor for structure health monitoring on the metal sheet member. The half-duplex communication device and the communication method thereof have advantages of reducing data transmission wiring and maintenance cost in a traditional sensor system, changing a traditional electromagnetic signal transmission method, realizing high suitability for multiple occasions, and improving stability of the whole system. Furthermore the half-duplex communication device and the communication method have advantages of small size, low cost, low energy attenuation, high transmission efficiency and long transmission distance.