142results about How to "Play the role of isolation protection" patented technology

The invention discloses a two-dimensional crystal material field effect transistor, which comprises a semiconductor substrate, a dielectric layer, a metal gate, a gate dielectric layer, a channel layer, a graphene layer, a two-dimensional crystal protection layer, a source electrode and a drain electrode. The invention further discloses a method for preparing the two-dimensional crystal material field effect transistor. A two-dimensional crystal material directly grows on the gate dielectric layer in a self-aligned manner, and doped graphene is adopted as a source and a drain and connected with metal as the source electrode and the drain electrode to prepare the field effect transistor. According to the two-dimensional crystal material field effect transistor and the preparation method thereof, the field effect transistor with stable two-dimensional crystal material film property can be manufactured by adopting a conventional CMOS manufacture procedure; and the ultimate target of preparing a small-size and large-scale two-dimensional crystal field effect transistor array is achieved.

The invention relates to a preparation method of a nano-microcapsule adopting chitosan-TPP-KGM as a compound wall material. The preparation method comprises the following steps: preparing chitosan solution with the mass percentage being 0.2-0.5 % (%, w/v), mixing TPP solution with KGM solution, and dropwise adding the mixed liquid of the two substances into the chitosan solution; carrying out magnetic stirring while dropwise adding is carried out till the mixed liquid is completely dropwise added, carrying out further stirring for 15-60 min at 10-50 DEG C, carrying out centrifugalizing, collecting nano-capsules, and carrying out flushing by adopting double distilled water, thus obtaining the chitosan-TPP-KGM compound nano-microcapsule, wherein the CPP-Ca<2+> compound is adopted as a modelmedicine for embedding. The loading rate of the microcapsule for the core material is high, the targeting and slow release effects are very good, and the microcapsule can be widely applied in the aspects including medicine slow release, food industry, biological functional materials, and the like.

The invention discloses a detachable endoscope anastomat, and the endoscope anastomat comprises a fixed handle, an adjusting shifting piece and a drying mechanism; a movable handle is rotatably connected to the left side of the bottom of the fixed handle, the adjusting shifting piece penetrates through a dial to be rotatably connected to a connecting sleeve, and a first gun barrel is fixed to the left end of the connecting sleeve; the left end of the first gun barrel is connected with a second gun barrel in a clamped mode, the left end of the second gun barrel is rotationally connected with a nail bin base, and the drying mechanism is clamped on the protective cover. According to the detachable endoscope anastomat, when the second gun barrel and the first gun barrel are connected together in a left-right clamped mode through the connecting rod and the connecting block, the second arrow indication mark corresponds to the first arrow indication mark, and then the second gun barrel is manually rotated till the second arrow indication mark corresponds to the rotation in-place indication mark; at the moment, the sliding block slides in place in the second sliding groove, the locking effect is conveniently achieved, and after the device is used and the operation is reversely repeated, the second gun barrel and the first gun barrel can be detached.

The invention relates to a pulse signal transformation circuit of an initiating explosive device for a satellite, aiming at solving the problems that the existing pulse signal transformation circuit of the initiating explosive device for the satellite cannot accurately measure the current value of a pulse signal, and a ground circuit has interference to the satellite. The pulse signal transformation circuit of the initiating explosive device for the satellite comprises a load simulation circuit, an opto-coupling isolation circuit and a Hall sensing circuit, wherein the load simulation circuit simulates the loading of the initiating explosive device for the satellite and transmits a current signal to the opto-coupling isolation circuit and the Hall sensing circuit simultaneously, the opto-coupling isolation circuit converts the received current signal analog quantity to digital quantity and transmits the digital quantity to a measurement control unit, and the Hall sensing circuit converts the received current signal to a voltage signal and transmits the voltage signal to a measurement control unit; and the load simulation circuit comprises two resistors connected in parallel, the opto-coupling isolation circuit adopts an SCSL-6400 chip, and the Hall sensing circuit adopts an ACS712ELCTR-05B-T chip. The pulse signal transformation circuit is suitable for micro spacecrafts.

The invention relates to the technical field of electrostatic application, and discloses a device for solution electrostatic spraying. The device comprises a shell and a cavity arranged on the outer wall of the shell, wherein both the shell and the cavity are insulated; a high-voltage electrostatic generating module and a battery are arranged in the shell; the high-voltage electrostatic generating module is connected with a metal elastic piece arranged on the inner wall of the shell through a zero-potential line; a dismountable metal battery cover is arranged on the shell and is in elastic contact with the metal elastic piece after being mounted on the shell; openings are formed in the two ends of the cavity and are used for an injector with a syringe needle to insert; a metal piece with an opening is arranged at the bottom of the cavity; the syringe needle of the injector penetrates through the openings and contacts with the metal piece; in addition, a negative high-voltage input line is arranged between the high-voltage electrostatic generating module and the metal piece. The electrostatic spraying device integrates two functions of electrostatic spraying and electrostatic spinning, greatly reduces the size and weight, and can be held by hands of one person to be independently operated.

The invention discloses a leakage protector facilitating installation and wiring. The leakage protector includes a protector body, a base is fixedly connected to the back of the protector body, the inner wall of the protector body is fixedly connected with a first insulating plate, one side of the first insulating plate is fixedly connected with a first baffle, one end of the first baffle far awayfrom a first insulator is fixedly connected with the inner wall of the protector body, one side of the first insulator is fixedly connected with a second conductor, the second conductor is located below the first baffle, one side of the second conductor is fixedly connected with a first conductor, the first conductor penetrates the first baffle and extends to the outside of the first baffle, oneend of the second conductor far away from the first insulating plate is fixedly connected with a conductor block, and one side of the conductor block is fixedly communicated with a wiring hole. The leakage protector facilitating installation and wiring has the advantages of being convenient to install and fix, being fixed firmly and facilitating wiring.

The invention relates to a material outboard exposure device which is installed on an outer side platform of an on-orbit spacecraft. The device comprises a base, a load center frame, an installation support, a plurality of experiment boxes and a four-degree-of-freedom inspection mechanical arm, and a notch is reserved in one edge of the base; the load center frame is vertically and fixedly installed in the center of the base; at least one assembling opening is formed in each side, corresponding to the base, of the installation support; the plurality of experiment boxes are respectively and detachably arranged in the at least one assembling opening; one end of the four-degree-of-freedom inspection mechanical arm is rotationally connected to the top end of the load center frame, and the other end is movably located in the notch; an image acquisition device is mounted on the four-degree-of-freedom inspection mechanical arm in a sliding manner; after the other end of the four-degree-of-freedom inspection mechanical arm is moved out of the notch, the experiment boxes are opened, and the exposed surfaces of the experiment boxes are perpendicular to the base and is parallel to the corresponding side of the base; and the four-degree-of-freedom inspection mechanical arm drives the image acquisition device to rotate around the load center frame and inspects the exposed surfaces of the plurality of experiment boxes in sequence.

The invention discloses a multifunctional drawing table for landscape engineering design. The drawing table includes a tabletop baseplate, three groups of storage drawer boxes are movably installed atthe lower portion of the tabletop baseplate, a first supporting leg is fixedly installed on the outer surface of the lower end of the corresponding storage drawer box, a second supporting leg is fixedly installed on the side, close to the first supporting leg, of the outer surface of the lower end of the corresponding storage drawer box, and protective caps fixedly sleeve the front and rear endsof the first and second supporting legs respectively. A storage barrel is fixedly installed on the other side of the first supporting leg, a winding drum is fixedly installed on the outer surface of one side of the tabletop baseplate, a rotary table board is movably installed at the upper portion of the tabletop baseplate, and an adjustable hand wheel is movably installed on the outer surface of the other side of the tabletop baseplate. By means of the multifunctional drawing table for the landscape engineering design, a great protection effect can be achieved on drawing paper, more strength is saved during ascending and descending of the table board, the functionality of the drawing table is improved, and a better use experience is brought.

The invention relates to the technical field of fabricated buildings, and discloses a fabricated building plane anti-seismic structure. The fabricated building plane anti-seismic structure comprises a foundation, a buffer layer is movably connected to the top of the foundation, a building base plate is fixedly connected to the top of the buffer layer, a building is fixedly connected to the top of the building base plate, and a first elastic pipe and a second elastic pipe which are located in the buffer layer are fixedly connected between the foundation and the building base plate. The fabricated building plane anti-seismic structure has the advantages of good anti-seismic effect and the like, and solves the problems that in the prior art, when an earthquake occurs, a foundation jumps up and down or swings left and right, a building needs to have impact force for resisting up-down jumping or left-right swinging, but an existing fabricated building plane anti-seismic structure is insufficient in earthquake resisting capacity, especially in the aspect of resisting left-right swinging caused by earthquakes, consequently the prefabricated building plane anti-seismic structure is low in practicability.

The invention discloses a preparation method and application of a diamond/metal-matrix composite material. The high-thermal-conductivity diamond/metal-matrix composite material comprises a diamond reinforcement body and a metal-based material, wherein the diamond reinforcement body comprises diamond and a diamond surface modification layer, the diamond surface modification layer sequentially comprises a diamond transition layer and a diamond-doped shell layer from inside to outside. According to the preparation method, a gas pressure assisted infiltration process technology is adopted, high-purity gas serves as a pressure source and acts on the surface of a molten liquid metal matrix, and high-density compounding of the diamond and the metal-matrix material is achieved; and the preparation method can effectively overcome capillary force in the permeation process, realizes high-pressure seepage forming, and enables the material to be high in heat conductivity coefficient, adjustable in thermal expansion coefficient, better in uniformity and higher in reliability.

The invention discloses a marine water pump test device. The marine water pump test device includes a motor, a torque meter, a transmission box, a first mounting seat, a sliding seat and a rigid waterinlet pipe; the first mounting seat is detachably connected with a mounting plate, and a first mounting hole corresponding to a water pump to be tested is formed in the mounting plate; the motor, thetorque meter and the transmission box are connected in a transmission mode in sequence, and an output gear of the transmission box is connected to a transmission gear of the water pump to be tested in a transmission mode; and the rigid water inlet pipe slides axially along a center hole of the sliding seat, and a first flange corresponding to a water inlet of the water pump to be tested and a second flange connected with a soft water inlet pipe are separately fixed to two ends of the rigid water inlet pipe. The marine water pump test device has good versatility, is suitable for the test of different types of marine pumps, is convenient to operate, improves test efficiency and reduces the cost.

The invention discloses a method for improving the paint dipping effect of a reinforcing mesh. A production process comprises the following steps of S1, placing the reinforcing mesh in a paint dippingtank I for primary paint dipping; S2, moving the reinforcing mesh subjected to the primary paint dipping to a drying room I from the paint dipping tank I, and conducting primary drying in the dryingroom I; S3, entering a paint dipping tank II for secondary paint dipping after the reinforcing mesh being subjected to the primary drying; and S4, entering a drying room II for secondary drying afterthe reinforcing mesh being subjected to the secondary paint dipping; and the production device of the reinforcing mesh comprises the paint dipping tanks and the drying rooms, the paint dipping tanks comprises the paint dipping tank I and the paint dipping tank II, the drying rooms comprises the drying room I and the drying room II, the paint dipping tank I is arranged at the head end, the drying room II is arranged at the tail end, and the drying room I and the paint dipping tank II are arranged between the paint dipping tank I and the drying room II. According to the method for improving thepaint dipping effect of the reinforcing mesh, the reinforcing mesh is subjected to two times of the paint dipping and two times of the drying, the defect of the primary paint dipping is remedied through of the secondary paint dipping, uneven primary paint dipping is avoided, and the problems of paint blistering, cracking and shelling of the reinforcing mesh are solved.

The invention discloses a pre-embedded oxygen-free packaging detection method for an integrated circuit board, belongs to the technical field of circuit packaging, and can realize innovative embeddingof a pre-embedded detection rod in the packaging process of the integrated circuit board; therefore, on the one hand, leads can be conveniently led out of a packaging body from the integrated circuitboard; on the other hand, oxygen detection can be carried out in the encapsulation body in a water supply triggering mode after encapsulation is finished, oxygen is consumed while the oxygen is detected in a first communication and air suction mode, then stable carbon dioxide gas is released, residual oxygen can be expelled, residual oxygen is reduced, and the residual oxygen is pre-stored in theencapsulation body, so even if air leakage occurs in the later period, external air can be prevented from entering by utilizing the filling property of carbon dioxide, so certain time is provided foroverhauling of technicians, and the packaging quality of the integrated circuit board is improved.

The invention aims to provide an encrypted communication security module special for power that satisfies the requirements of distribution network terminals, small hydropower generation data collection and marketing smart electric meter data collection, can be directly embedded into various types of terminals and instruments in a security module manner, and can meet various types of application requirements. The security module includes a security encryption CPU using an SOC architecture, wherein the security encryption CPU extends a plurality of interfaces through bus and serial port resources, the plurality of interfaces include a power interface connected to an external power supply, a storage interface of external storage equipment, an input interface and an output interface, the inputinterface is a serial port or a network interface, the output interface is a network interface or a GPRS interface, the network interface and/or the GPRS interface are/is provided with a network isolation transformer, the serial port is provided with an isolated RS232 conversion chip, the power interface is provided with an EMC circuit and an anti-reverse circuit, and the input interface and theoutput interface are both provided with an anti-DOS attack module. The invention can be applied to the field of security communication.

The invention discloses a production technology of nano-CuS. Nano-CuS particles are prepared from CuCl2.2H2O and Na2S.9H2O through dissolving, filtering, mixing, thickening, vacuum filtering and drying processes. The technology has the advantages of easily available raw materials, low prices, no generation of wastes polluting environment in the reaction process, and environment requirement meeting. The nano-CuS produced in the invention can be used as a lubricating oil additive to greatly improve the performances of lubricating oil in order to meet market demands.