36results about How to "Inhibit redistribution" patented technology

The invention provides a fin type channel dual-grid multifunctional field effect transistor and preparing method in metallic oxide semi-conductor field effect transistor technique field of the grand scale integration. The flied effect transistor is based on SOI underlay, the cross section of channel is rectangular fin along the vertical direction of the channel and forms the fin channel; a side of the channel is the grid oxide and the front grip, the other side is the tunnel oxide layer as the silicon nitride trap layer, the barrier oxide layer and the back grip of the charge storage layer and forms dual-grid structure; two edges of the fin channel are connected with the common n+ source and n+ leakage, the front grid aligns the back grid, the n+ source and the n+ leakage are covered less; the device achieves the channel section, the source section and the leakage section on the insulating layer based on SOI underlay. The invention is provided with high-effective MOSFET logical device function, the function of high-speed storage and the function of no condenser type DRAM.

The invention discloses a heat exchanger. The heat exchanger comprises a first collecting pipe, a second collecting pipe, a plurality of flat pipes arranged between the first collecting pipe and the second collecting pipe in parallel, and fins arranged in gaps between each two adjacent flat pipes, each flat pipe comprises two bending sections enabling a channel in the flat pipe to divert, the bending sections are a first bending section and a second bending section, the flat pipe also comprises a first linear section, a second linear section, and a third linear section, two sides of the first linear section and the third linear section are provided with the fins, and two sides of the second linear section are provided with the fins. According to the heat exchanger, the folding flat pipe is employed, the re-distribution of refrigerants is avoided, the fins are only arranged at the outsides of the linear sections of the flat pipes in which the refrigerants flow from bottom to top, the heat exchange performance is good, and the wind resistance is small.

The invention provides a preparation method of a load type nano catalyst for catalyzing a Suzuki coupling reaction, and relates to a preparation method of a catalyst. According to the preparation method, the problem that particle redistribution and aggregation are prone to occurring on palladium nanoparticles formed in the existing chemical reagent reducing preparation process in a liquid phase system is solved. The preparation method comprises the following steps that at room temperature, activated carbon and a Na2PdC14 solution are mixed, centrifuged and dried for 12 h, and a sample is obtained; the sample is taken, evenly laid on a bearing boat and placed in a discharge tube, vacuumizing is performed, N2 plasma discharge gas is pumped in, high-voltage direct currents are applied at the two ends of an electrode, the gas in the discharge tube is broken through, glow discharge plasma is initiated, and then the load type nano catalyst is obtained. According to the preparation method, the glow discharge plasma is used for preparing the load type nano catalyst in a reduction mode, particle redistribution caused by liquid phase system reduction is avoided, and the prepared Pd nanoparticles are not prone to aggregating, small in size and homogeneours in dispersion. The method belongs to the field of catalyst preparation.

The invention discloses a method for preparing a nano-scale catalyst through ultrasonic atomization plasma reaction. The method comprises the following steps: (1) introducing an active component intoan ultrasonic atomizer, and introducing carrier gas into the ultrasonic atomizer for bubbling to bring out atomized gas containing active component precursor, so as to form aerosol; putting a catalystcarrier into a discharging gap of a plasma reactor, uniformly mixing aerosol flowing from the ultrasonic atomizer with supplemented carrier gas, enabling the mixture to continuously flow through thedischarging gap, heating gas in the plasma reactor, starting a high-voltage discharging device, continuously keeping atomization and high-voltage discharging states to reduce metal ions in active components of the aerosol into metal monomers loaded to the catalyst carrier. Compared with traditional methods, the catalyst prepared by virtue of the method has the advantages that the catalytic activity is high, the preparation cost of the catalyst is low, the preparation process is simple, and the catalyst has an extremely high industrial application value.

The invention discloses a dust collecting device of communication equipment. The dust collecting device comprises a box body, wherein the bottom of the internal wall of the box body is fixedly connected with a storage battery, an air blower which is located at the right side of the storage battery is fixedly connected with the bottom of the internal wall of the box body, the top of the air blower communicates with an air inlet pipe, the surface of the air inlet pipe is fixedly connected with a dust detector, the top of the air inlet pipe penetrates through the box body and extends to the outside of the box body, one end, far away from the air blower, of the air inlet pipe is fixedly connected with a dust suction sleeve, a filtering water tank which is located at the right side of the air blower is fixedly connected with the bottom of the internal wall of the box body, the right side of the air blower communicates with the filtering water tank through the air inlet pipe, the top of the filtering water tank communicates with a water inlet pipe, and the top of the water inlet pipe penetrates through the box body and extends to the top of the box body. According to the dust collecting device of the communication equipment, through the air blower, the dust detector and the filtering water tank which are matched with one another, the problem of the traditional dust collecting devices that the normal operation of the communication equipment is affected due to poor dust removal effect is solved.

The invention provides a three-directional movement decoupling periodic structure for a vibrating table model box. The periodic structure is formed by sequentially overlapping n periodic structure units, each periodic structure unit is formed by sequentially overlapping a first side limiting layer, a plane decoupling layer, a second side limiting layer and an elastic layer, n is a positive integerlarger than or equal to 2, the section shapes of the first side limiting layer, the plane decoupling layer, the second side limiting layer and the elastic layer are the same, and the periodic structure is used for three-directional movement decoupling under seismic oscillation conditions. The invention further provides a three-directional movement decoupling model box for vibrating table tests. The model box is composed of the periodic structure, a model box bottom plate and a limiting protection door type frame through combination. The model box is light in weight, high in strength and suitable for super gravity and normal gravity vibration table tests; it is ensured through multiple measures that the movements of the model box and a test soil body are synchronous, the movements in the X-direction, the Y-direction and the Z-direction between the model box and the test soil body do not interfere with one another, no additional acting force is generated by the model box on the test soil body and a boundary effect is avoided as much as possible; three-directional movement decoupling can be well realized, and prototype site characteristics are restored.

The invention discloses a high-entropy alloy component and a manufacturing method thereof, and relates to the technical field of high-entropy alloys. The problem of composition segregation of the high-entropy alloys is avoided. The manufacturing method of the high-entropy alloy component comprises the steps that a substrate is provided; metal powder is laid on the substrate, wherein the metal powder comprises Al, Co, Cr, Fe and Ni with the atomic ratio being a: b: c: d: e, a is larger than 0 and smaller than or equal to 1.2, and each of b, c, d and e is equal to 1; and the metal powder is subjected to melting forming treatment through a selective laser melting process, and the high-entropy alloy component is obtained. The high-entropy alloy component and the manufacturing method thereof are used for manufacturing the high-entropy alloy component.

The invention discloses a method for controlling twist redistribution. According to the invention, a back zone force application method is adiopted to apply external force on a strip located in a drawing back zone, a force application point is located on the strip surface of the drawing back zone, component force is produced by the applied external force in a vertical direction of the strip surface of the drawing back zone, a stable frictional force zone is provided for the position of the force application point, the strip is not easy to turn over, simultaneously, compactness of the strip can be effectively improved, twist redistribution can be effectively avoided, and resultant yarn levelness is improved.

The invention discloses a charge pump applied to a frequency synthesizer. The charge pump comprises a charge-discharge current branch and an output impedance multiplication circuit. The charging and discharging current branch is composed of a unit negative feedback loop and a current source, wherein the unit negative feedback loop is composed of a complementary CMOS switch and a rail-to-rail inputand output amplifier, and the charging and discharging current branch is used for charging and discharging an output node and eliminating a clock feed-through effect and a charge sharing effect. Theoutput impedance multiplication circuit is composed of a folding type cascode structure and is used for improving the output impedance of the charge pump. The output impedance multiplication circuit comprises a reference current source, first, second, third, fourth, fifth, seventh, eighth, tenth, eleventh and sixteenth NMOS tubes, and first, second, third, fourth, sixth, seventh, ninth, tenth andfifteenth PMOS tubes. The invention is suitable for the drain terminal switch charge pump with good matching characteristic under low voltage, improves the matching degree of charging and dischargingcurrent, improves the phase noise of the frequency synthesizer, and improves the output impedance of the charge pump.

The invention discloses a polypeptide molecule for preventing PD-L1 from redistributing on a tumor surface, and a preparation and application of the polypeptide molecule. The polypeptide molecule comprises an aggregation unit part, an assembly unit part and a targeting unit part, wherein the three parts are sequentially connected together to form a long-straight-chain polypeptide compound, and theaggregation unit part and the targeting unit part are respectively positioned at two ends of the long-straight-chain polypeptide compound. The aggregation unit part comprises double-pyrene molecules;the assembly unit part is a polypeptide sequence with an assembly function; and the targeting unit part is a specific polypeptide sequence. The polypeptide molecules dissolves nanospheres through interaction of receptors, polypeptide nanofibers are constructed through in-situ self-assembly in tumor tissues, and long-acting blocking of an immune checkpoint is realized, so that redistribution caused by endocytosis at the immune checkpoints is avoided, and the treatment effect of lasting blocking is achieved.

The invention relates to a wet food waste water removing method and device. A centrifugal filtration barrel, a drying cavity, a mincing machine and a liquid collecting cavity are sequentially arranged in the shell of the device from an inlet to an outlet; the wet food waste water removing method and device are characterized in that the centrifugal filtration barrel is arranged in the side, close to the inlet, of the shell, and the mincing machine is arranged in the side, close to the outlet, of the shell; the drying cavity is arranged between the centrifugal filtration barrel and the mincing machine, and the bottoms of the centrifugal filtration barrel and the drying cavity are connected with the liquid collecting cavity; the mincing machine is connected with the drying cavity and the liquid collecting cavity; the centrifugal filtration barrel uses centrifugal force generated by rotation of a centrifugal machine, and moisture is thrown out of the barrel through multiple filter net holes in the barrel wall; the centrifugal filtration barrel is used for removing water in wet food waste, the wet food waste is then fed into the drying cavity for secondary water removal and is finally fed into the mincing machine, food waste can be treated in time after being generated, secondary pollution caused by objective factors (such as the placement or transportation process) is avoided, and re-spreading of bacteria is avoided.

The invention provides a semiconductor device and a manufacturing method thereof. A diffusion barrier layer is formed on the side wall of a source and drain groove, on one hand, the stress, introducedtowards a channel region, of a stress layer of epitaxial growth in the source and drain groove subsequently cannot be reduced, on the other hand, subsequently formed doped ions in the stress layer further can be avoided from being diffused into the channel region and a gate medium layer, the junction depth is avoided form being increased, and the redistribution of the doped ions is avoided, so that the short-channel effect and reverse short-channel effect are improved, and the requirement that the performance of the device is improved is met.

The invention discloses an oil-resistant conductive fluororubber, and a preparation method and application thereof. The preparation method comprises the following steps: firstly, preparing fluororubber mixed rubber and nitrile rubber mixed rubber, freezing and grinding the nitrile rubber mixed rubber into powder, sieving, mixing with carbon nanotubes to obtain mixed powder, mixing the mixed powder with the fluororubber mixed rubber, and vulcanizing the obtained rubber compound to obtain the oil-resistant conductive fluororubber which can be used as a shape memory material. The oil-resistant conductive fluororubber can perform double shape memory circulation or triple shape memory circulation along with temperature change, and meanwhile, due to the addition of the carbon nanotubes, fixation and recovery of the material in the shape memory circulation can be realized through temperature change caused by voltage. The preparation method is simple and rapid; meanwhile, the obtained fluororubber has good processability and is suitable for being used as a high-performance functional rubber material.

An operational amplifier includes an input stage, an output stage, an output enable switch, an internal capacitor, a coupling effect reduction circuit. The input stage provides an intermediate signal according to an input signal. The output stage, including an output node, provides a driving signal according to the intermediate signal. The output enable switch is turned on during an output enable period, having a start time point, to drive a load with the driving signal. The internal capacitor is coupled between the input stage and the output stage. The coupling effect reduction circuit, coupled between the internal capacitor and the output node or between the internal capacitor and the input stage, is turned off during an operational period starting from the start time point, to prevent coupling charge generated when the output enable switch is turned on from affecting operational voltage levels of the input stage.

The invention discloses a high-precision measuring device and a high-precision measuring method for silo test model interface pressure distribution. The high-precision measuring device comprises a silo container, a stress measuring device for particle column bottom/side wall pressure distribution in the silo container, and a feeding funnel; the silo container is of a hollow columnar structure madeof transparent materials, and the stress measuring device comprises strip-shaped flexible stress measuring films symmetrically laid on the inner wall of the silo container, a flexible stress measuring film block fixedly pressed at the bottom of the silo container, and a computer which is communicated with the strip-shaped flexible stress measuring film and the flexible stress measuring film blockthrough data lines. According to the invention, all cross sections including the outer wall of the silo container are arranged on the flexible stress measurement film block, so that a full-section high-density pressure distribution result can be obtained, and the change rule of pressure transmitted by the silo wall and the in-silo particle column can be compared and analyzed; the redistribution of internal force of a particle system caused by deformation of a traditional pressure test box is eliminated, and the silo pressure test accuracy is improved.

The invention relates to the technical field of ice making equipment, in particular to an ice maker ice tray evaporator production technology. The method comprises the following steps of 1, copper pipe bending, specifically, a copper pipe is bent through a bending machine according to a drawing and then finished through a punching fixture; and 2, aluminum alloy die casting mold opening, researching, developing and designing, specifically, a corresponding aluminum alloy die casting mold is manufactured, clamping buckles used for controlling the hollow copper pipe to move up and down and move left and right when aluminum alloy die casting is conducted are designed in a front mold body of the mold, and then the copper pipe is directly fixed to the aluminum alloy die casting mold for die casting production. According to the ice maker ice tray evaporator production technology, the copper pipe on the back of an ice maker evaporator is directly die-cast into an aluminum alloy through the aluminum alloy mold and then welded to an ice maker compressor, the copper pipe can achieve refrigerating and heat transferring together with the aluminum alloy absolutely, insulating paint is sprayed tothe back face of the evaporator to prevent energy of the back of the evaporator from being wasted, therefore, the time of making ice cubes by an ice maker is shortened by 30%, and electricity is saved.