36results about How to "No difficulty increase" patented technology

The invention discloses a synthetic method of N,N'-dibenzyl-1,2-ethanediamine. The synthetic method comprises the following components: in a reaction vessel, a liquid phase catalytic hydrogenation reaction is carried out for N,N'-dibenzylidene-1,2-ethanediamine in the effects of a nitrogen doped meso pore carbon loaded precious metal catalyst in order to prepare and obtain N,N'-dibenzyl-1,2-ethanediamine. In the nitrogen doped meso pore carbon loaded precious metal catalyst, the precious metal is Pd or Pt, and the load capacity of the precious metal is 1-10wt%. The synthetic method has the advantage of high selectivity of target products.

The invention discloses a GaAs PIN diode, which comprises: a semi-insulating GaAs underlay for supporting the whole GaAs diode; a high doped layer N growing in extension on the semi-insulating GaAs underlay, resistive formations I and P close to eigen growing in extension in turn on the high doped layer N; By wet process and etching, the areas of the said high doped layer N, resistive formations I and P reduced in turn to form a mesa structure; a top electrode of the round structure formed by metal evaporator on layer P; a semi-orbicular bottom electrode formed by metal evaporator on layer N. The invention also discloses a manufacturing method of GaAs PIN diode. The invention efficiently lowers the parasitic capacitance of the PIN diode without increasing the difficulty of the process and simultaneously greatly shortens the microstrip line connected with the top electrode. The spurious inductance brought by the invention can be greatly reduced or even omitted without using the air-bridge process. The invention has the advantages of easy making, better high frequency characteristic, which is easy to realize the single scale integration.

The invention discloses a high-resistance surface metamaterial waveguide slot antenna. The metamaterial waveguide slot antenna comprises a metamaterial waveguide tube and a radiation gap, wherein the metamaterial waveguide tube comprises a metal waveguide tube and a dielectric plate, the metal waveguide tube is a through tube with a rectangular cross section, the radiation gap is arranged in an upper surface of the metal waveguide tube, one end of the metal waveguide tube is opened and is used as a signal input port, the other end of the metal waveguide tube is closed and is in a short-circuit state, the dielectric plate is arranged on a wide edge of a lower part of an inner wall of the metal waveguide tube along a length direction, a periodic pattern is etched on a surface of the dielectric plate. By the antenna, low-loss radiation can be achieved in a working frequency band, and the antenna is high in efficiency; and by the antenna, dual-band suppression outside the working frequency band can be achieved, the characteristic of the antenna is equivalent to that of a high-pass filter when electromagnetic interference of a low frequency band is suppressed, and the characteristic of the antenna is equivalent to that of a band rejection filter when electromagnetic interference of a high frequency band is suppressed.

The present invention relates to a temperature measurement device of a cable joint and a cable joint. The temperature measurement device comprises a rear plugging cover and a temperature measurement sensing device; a metal insert is embedded into one end of the rear plugging cover; the wiring terminal of the cable joint is fixedly connected with the metal insert; the temperature measurement sensing device is crimped between the wiring terminal and the metal insert; and the temperature measurement sensing device is an SAW temperature sensor or a radio frequency identification sensor or a radio frequency sensor which obtains electricity through an electric field. According to the temperature measurement device of the cable joint of the invention, the temperature measurement sensing device directly contacts with a heat emitting point in the cable joint, so that the temperature of a cable connection point in the cable joint can be reflected effectively and authentically.

The invention discloses a display panel and a display device, wherein the display panel comprises a color film substrate and an array substrate arranged opposite to the color film substrate. A gap isformed between the color film substrate and the array substrate, the gap is filled with liquid crystal, the color film substrate defines a plurality of pixel areas, the color film substrate comprisesa transparent photoresist, the transparent photoresist is provided with a first photoresist layer and second photoresist layer corresponding to each pixel area, the first photoresist layer and the second photoresist layer divide the pixel areas into a first domain area and a second domain area, and the gap in the first domain area is larger than the gap in the second domain area. According to theinvention, liquid crystal gaps of different domain areas are formed in each pixel area through different photoresist layer thicknesses, so that the problem of large visual color cast is solved.

The invention discloses a backup type semiconductor laser based on a reconstructing-equivalent chirp technology, wherein the backup type laser comprises two parallel semiconductor DFB lasers; the semiconductor DFB lasers are distributed parallelly and the interval distance is within the range of 15 micrometer to 50 micrometer; each of the leasers is utilized to add equivalent phase shift to a sampling bragg grating structure based on the reconstructing-equivalent chirp technology; and a lasing channel used by each of the lasers is provided by plus 1 level sub-grating or minus 1 level sub-grating of the sampling bragg grating. By adopting the laser provided herein, one laser of the two parallel lasers must be in the single model working state, thus eliminating the problem of low yield of high reflection-low reflection coated laser single models on the basis of not adding technology cost.

The invention relates to a back passivating method and a preparation method of a crystalline silicon solar cell. The back passivating method of the crystalline silicon solar cell comprises the steps of providing a silicon chip, and forming a suede surface on the front surface of the silicon chip after sueding the front surface of the silicon chip; preparing a covering film on the suede surface of the silicon chip, and obtaining the silicon chip which is laminated with the covering film; putting the silicon chip which is laminated with the covering film in an oxidation furnace, and preparing a passivating film on the back surface of the silicon chip by adopting a thermal oxidation technology. According to the back passivating method of the crystalline silicon solar cell, disclosed by the invention, the covering film physical property of the covering film is utilized, and the passivating film is prepared on the back surface of the silicon chip by adopting the thermal oxidation technology; the advantages of a deposition method and the thermal oxidation technology are integrated, the front surface of the silicon chip can not be influenced by a growing process of the passivating film on the back surface of the silicon chip, the difficulty of a back passivating technology is not increased, the technology is simpler, and the passivating effect is good.

The invention discloses a processing device for modified asphalt, and relates to asphalt roads. The invention is to solve the following problems in the prior art: matrix asphalt containing rubber powder and auxiliary agents are incompletely ground, so a cross-linking reaction is incomplete; and onstructed pavements easily generate distresses like loosening and potholes. The processing device comprises a rubber grinding machine which comprises a mounting support seat, a horizontal motor located at the left part of the mounting support seat, a grinding device located at the right part of the mounting support seat, a motor rotating shaft and cooling water pipe joints, wherein the grinding device and the horizontal motor are connected through the motor rotating shaft; the left and right sidesof the grinding device are respectively connected with a cooling water pipe joint; and the grinding device comprises: a grinding disc shell; a feeding inlet, a feeding channel and a discharge channel,which are located above the grinding disc shell; a discharge outlet and a mixing cavity, which are located below the grinding disc shell; and a grinding structure, which is arranged in the interior of the mixing cavity. With a technical scheme of the invention, the matrix asphalt containing 15 to 20% of rubber powder and the auxiliary agents are completely ground, so the cross-linking reaction iscomplete.

The invention discloses a sensor with contact-pressing and ultrasonic functions. The sensor comprises a substrate as well as an ultrasonic detection unit and a contact-pressing detection unit which are formed on the substrate; the ultrasonic detection unit comprises a first ultrasonic detection electrode layer formed on the lower surface of the substrate as well as a first elastic film and a second ultrasonic detection electrode layer which are formed on the upper surface of the substrate sequentially; the contact-pressing detection unit comprises a first contact-pressing detection electrode layer formed on the lower surface of the substrate as well as a second elastic film and a second contact-pressing detection electrode layer which are formed on the upper surface of the substrate sequentially; the sensor further comprises a contact layer; the contact layer corresponds to the contact-pressing detection unit and is formed on one side, far away from the substrate, of the second contact-pressing detection electrode layer; the contact layer comprises a contact bulge; the contact bulge faces to the second contact-pressing detection electrode layer. When an external force acts on the sensor, the contact bulge can transmit the external force to the second elastic film well, so that the second elastic film generate greater deformation and the sensitivity of the sensor is improved.

The invention provides a nitrogen-doped palladium-carbon catalyst and a preparation method thereof, and an application of the nitrogen-doped palladium-carbon catalyst in a reaction for synthesizing chlorotrifluoroethylene by taking 1, 1, 2-trifluorotrichloroethane as a raw material. In the catalyst carrier nitrogen-doped activated carbon, nitrogen is mainly graphite nitrogen, and nitrogen doping can increase the binding energy of metal and carbon so that the dispersion of metal is facilitated, the fixation and stability of metal in the reaction process are improved, the operation is simple, and the obtained catalyst is easy to recycle.

The invention discloses a hardware encryption method, system and device based on distributed storage, and belongs to the field of data security. The method comprises the following steps of: obtaining a key through an encryption card API, slicing user data, encrypting, performing hardware encryption on the data according to a user identity, and storing a ciphertext on a disk. According to the technical scheme, data leakage caused by the fact that the hard disk is stolen can be avoided due to the fact that the ciphertext data exist on the disk, meanwhile, logic isolation and encryption isolation of user data are provided by adopting different strategies of different user passwords, and establishment of a safer encryption mechanism is facilitated.

The invention belongs to the technical field of wind turbine generator blades, and particularly relates to wind turbine generator combined type blades and an installation method. Each combined type blade comprises two or more segments of blades, the connection end of each segment of the blades is closed, and web plates of the segment of the blades extend out; web plates corresponding to the connection ends of two adjacent segments of blades are connected with each other through web plate connectors; a plurality of beam cap connectors are arranged between two adjacent web plates to connect the two segments of the blades; a plurality of skin connectors are arranged at the outer sides of the web plates respectively to connect the two segments of the blades; each portion of connection segments of the blades is connected with corresponding segment of the blades through titanium alloy bolts. When installation is conducted, a carbon fiber reinforced layer is paved at the connector position of each segment of the blades, and bolt holes are punched; the two segments of the blades are connected with each other through flange self-lock pins and bolts; finally, the blades are lifted and mounted on a wind turbine generator according to conventional lifting and mounting procedures. By means of the wind turbine generator combined type blades and the installation method, on the premise of not changing blade aerodynamic performance, the segmented manufacture, the segmented transportation and the rapid installation of the blades are convenient to achieve, the sufficient strength and rigidity are guaranteed, and the difficulties and the cost of manufacture and transportation are reduced.

The invention relates to a method of processing in-band unevenness caused by DAC preprocessing, belonging to the technical field of digital communication. A zero-order retainer is adopted for a digital-to-analog converter (DAC), consequently, inherent attenuation in amplitude-frequency characteristic causes poor amplitude consistency in a bandwidth signal. In the method, a compensation method forpredistortion processing through a digital filter solves the inherent attenuation of the DAC, so that in-band evenness of a broadband signal is improved. Simulation results show that the method effectively relieves in-band unevenness of the broadband signal caused by DAC attenuation.

The invention discloses a packaging bag opening supporting device. The packaging bag opening supporting device comprises a packaging bag frame and an opening supporting frame. A plurality of packaging bag inner guide blocks are arranged on the opening supporting frame, the packaging bag frame comprises a packaging bag frame top plate and a plurality of outer guide units, a plurality of packaging bag holding openings are formed in the packaging bag frame top plate, and the packaging bag holding openings are connected with the outer guide units; wherein a packaging bag can enter the containing cavities of the outer guiding units and can extend to the outer portions of the packaging bag holding openings; and the packaging bag inner guide blocks can enter the containing cavities, and an annular gap can be formed between the packaging bag inner guide blocks and the containing cavities so that the packaging bag can move up and down in the annular gap. The packaging bag opening supporting device solves the technical problem of cross contamination existing in a packaging bag opening supporting device in the prior art.

The invention belongs to the field of packaging bottles, and particularly discloses a long pipe with a safety cover. The long pipe with the safety cover comprises a pipe body and the safety cover, thelower portion of the pipe body is arranged in a sealed mode, a connecting section is arranged on the upper portion of the pipe body, an opening is formed in the upper end of the connecting section and communicates with the pipe body, the safety cover comprises a cover body and a sealing element, the sealing element is located at the top of the interior of the cover body and is fixedly connected to the top wall of the cover body, a plurality of groups of clamping parts are arranged in the circumferential direction of the connecting section, each group of clamping parts comprises an inclined groove and two protruding parts, a clamping groove is formed between every two protruding parts, the lower ends of the inclined grooves communicate with the lower ends of the clamping grooves, the upperends of the inclined grooves are flush with the upper end of the connecting section, a plurality of protrusions are arranged on the inner wall of the cover body, the number of the protrusions is thesame as the number of the clamping parts, and the protrusions can be clamped into the clamping grooves and can slide along the inclined grooves. The long pipe has the advantage that the safety cover is arranged, so that the phenomenon that a child opens a safety cover and eats other objects by mistake can be avoided.