7results about How to "Expand the effective range" patented technology

The application provides a transistor structure and a preparation method thereof, and the preparation method comprises the following steps: providing a semiconductor structure, the semiconductor structure comprising a substrate, a well region of a first conductive type, a gate oxide layer, a gate, a first side wall layer and a second side wall layer, etching the second side wall layer and the first side wall layer in sequence to form a first side wall and a second side wall, in a vertical direction, the height percentage of the second side wall relative to the height of the gate is 1% to 8%, performing a first ion implantation of a second conductive type on the substrate to form a lightly doped region, the second conductive type is opposite to the first conductive type, performing a second ion implantation of the second conductive type on the substrate to form a source-drain region, and the implantation angle of the first ion implantation is larger than the implantation angle of the second ion implantation. The preparation method of the transistor structure of the application can obtain a transistor structure with effectively inhibited hot carrier injection effect without an additional LDD mask.

This application relates to the field of filling machine technology and discloses a semi-automatic filling machine and filling method for polyurethane production. The machine includes a support frame, a swing arm hinged to one side of the support frame, a horizontal moving seat slidably disposed on one side of the swing arm, a vertical moving seat slidably disposed on the horizontal moving seat, a cylinder fixedly disposed on one side of the horizontal moving seat, and a connecting rod fixedly connected to one side of the horizontal moving seat. This invention adjusts the positions of the horizontal and vertical moving seats by adjusting the connecting rod, coordinating with the swing arm's movement to adjust the position of the filling gun within a fan-shaped range. Simultaneously, the positioning rod on the outer side of the filling gun retracts when the filling gun descends, contacting the outer wall of the barrel opening, thereby moving the freely swinging and movable horizontal moving seat. This ensures that the ring formed by the filling gun and the positioning rod is collinear with the barrel opening, improving centering accuracy and increasing the allowable visual error range for manual positioning.

The application discloses a nuclear industry waste transfer equipment, which comprises a grab, a turnover device, a transfer device, a cleaning device and a cover taking and sealing device, the turnover device is used for carrying the turnover of an inner barrel of a circulating barrel, the transfer device is used for supporting the movement of the cleaning device and the cover taking and sealing device, the cleaning device is used for cleaning an outer barrel of the circulating barrel, and the cover taking and sealing device is used for taking and sealing a cover of the circulating barrel; the grab moves along a straight line direction, a grabbing position of the grab intersects with a turnover stroke of the turnover device and a transfer stroke of the transfer device, and the end of the grab is arranged with the circulating barrel, so that the grab can respectively take and place the inner barrel from the circulating barrel and the turnover device, take and place the cleaning device and the cover taking and sealing device from the transfer device, and respectively hold the cleaning device and the cover taking and sealing device to perform cleaning, cover taking and cover sealing on the circulating barrel. The equipment can efficiently realize waste transfer operation, avoids the introduction of human error, and improves system safety. The application further provides a nuclear industry waste transfer method.

The invention discloses a resistance measuring circuit and a resistance value measuring device.The resistance measuring circuit comprises a power input end, a resistance measuring channel, a first reference resistance switching circuit, a current switching circuit and a control circuit, and the first current transmission end of the resistance measuring channel is connected with the power input end; the first end and the second end of the resistance measurement channel are respectively connected to two ends of a to-be-measured resistor; the first end of the first reference resistance switching circuit is connected with the second current transmission end of the resistance measurement channel, and the second end of the first reference resistance switching circuit is connected with the grounding end; the first end of the current switching circuit is connected with the second current transmission end of the resistance measurement channel, and the second end of the current switching circuit is connected with the grounding end; the invention aims to improve the measurement range of the resistance measurement device.

The invention discloses a stirring piece assembly. The stirring piece assembly comprises a transmission shaft, a stirring cover and a tool bit arranged in the stirring cover. A containing groove is formed in the top of the stirring cover, the installation portion at the lower end of the transmission shaft is inserted into the containing groove and sleeved with the tool bit, and a through hole is formed in the wall of the stirring cover. The transmission shaft rotates to drive the stirring cover to rotate, the stirring cover drives the tool bit to rotate in the rotating process, and the stirring cover and the tool bit conduct stirring synchronously, so that the stirring range is greatly expanded, uniform cutting and stirring of food materials such as potatoes are achieved, and it is guaranteed that fine and consistent mashed potatoes are obtained. The mounting part is in interference fit with the accommodating groove through the rubber ring, so that the stirring cover can be quickly disassembled and cleaned. A protrusion is arranged on the edge of the bottom opening of the stirring cover and can effectively prevent the cutter head from rubbing the bottom of the stirring cup. The stirring device is ingenious in structure, high in stirring uniformity and convenient to clean and maintain.

This invention discloses a method for phytoremediation of cadmium-arsenic co-contaminated soil based on crop straw enhancement, comprising the following steps: S1, soil tillage and preparation; S2, modification of straw powder; S3, application of straw; S4, planting of remediation plants; S5, harvesting of plants: after the remediation plants have grown to maturity, they are harvested from the soil as a whole, completing the soil remediation. The method for phytoremediation of cadmium-arsenic co-contaminated soil based on crop straw enhancement provided by this invention, by applying specific high doses of straw in two forms—modified straw powder and straw segments—to the surface and deep soil layers respectively, can rapidly activate soil microbial activity, directionally regulate the soil microbial community structure, and enhance the activation and absorption of cadmium by kenaf; simultaneously, the microbial community macroscopically passivates arsenic in the soil, enhancing the arsenic capture and accumulation capacity of kenaf roots, thereby significantly improving the remediation of the entire contaminated soil.

This invention discloses a low-voltage cable junction box with an automatic drainage and dehumidification structure, including a junction box body. A dehumidification chamber is installed at the top of the junction box body. A semiconductor heating element is installed inside the dehumidification chamber, dividing the internal space of the dehumidification chamber into a condensation chamber and a heat dissipation chamber. The two sides of the semiconductor heating element are a cold surface and a hot surface, respectively. The cold surface is placed in the condensation chamber, and the hot surface is placed in the heat dissipation chamber. This invention uses the cold surface of the semiconductor heating element to condense water vapor in the air into liquid water. Simultaneously, multiple condensation screens are provided. A first heat-conducting surface quickly transfers cooling energy to the condensation screens, cooling them below the dew point temperature. When air flows through, water vapor more easily condenses into liquid water, adhering to the surface of the condensation screens and dripping to the bottom of the condensation chamber. This effectively reduces the humidity inside the junction box, reduces the risk of electrical components getting damp, and extends the service life of the equipment.