43results about How to "Unstable solution" patented technology

The invention relates to a deep water silt layer geological large-span multi-line reinforcing system and a jacking culvert construction method, and aims at providing a reinforcing system and a construction method for a high-water-level, long-jacking-stroke, large-span and high-tonnage jacking culvert to penetrate through multiple existing lines. The reinforcing system comprises a high-pressure jet grouting secant pile, a fender pile, an anti-traversing pile and a supporting pile. The jacking culvert construction method comprises the steps of starry well-point dewatering, foundation pit excavation and sliding plate fabrication, frame bridge prefabrication, line reinforcement, jacking equipment installation and process control. By adopting starry well-point dewatering, the problems of underground water burst and foundation instability during jacking are solved; since a frame bridge is integrally jacked after being prefabricated, the rigidity is high, the seismic performance is good and the influence by climate is smaller; compared with the traditional construction method, the reinforcement and the installation are convenient and easy to operate, the jacking speed is quick and the construction period is shortened; I-shaped steel, steel rails and sleepers used for engineering can be recycled; the overall economic benefits are remarkable, the practical value is greater and the application prospect is wide.

The invention discloses a microorganism seaweed liquid fertilizer for promoting the growth of toadstool and application of the microorganism seaweed liquid fertilizer. An enzymatic hydrolysate is obtained after low temperature physical treatment, high temperature sterilization treatment and enzymolysis treatment are performed on fresh seaweed in sequence; the obtained enzymatic hydrolysate is loaded into a fermentation tank, a compound microbial agent is added in terms of 3% to 5% of the weight of the enzymatic hydrolysate, a fermentation liquor is obtained through fermentation, a filter liquor which is the microorganism seaweed liquid fertilizer is taken after filtration, and the microorganism seaweed liquid fertilizer is sufficiently and uniformly mixed with potassium humate, compound amino acids, EDTA and chitosan, so as to prepare the liquid fertilizer. The application method of the microorganism seaweed liquid fertilizer comprises the following steps: soil is overturned twice in the period of 20 days before sowing, the microorganism seaweed liquid fertilizer is applied to the soil in terms of 4 kg per mu, and spraying is supplemented after first picking of toadstool, so that sufficient early nutrient supply for toadstool is guaranteed, the beneficial viable bacteria in the soil are activated, the soil fertility is improved simultaneously, and the method is significant forimproving the yield and quality of toadstool and promoting the income increase of farmers.

The invention provides an automatic gain control system having hysteresis switching. The system comprises an error calculator, a hysteresis comparator, a first automatic gain control loop and a second automatic gain control loop, wherein the error calculator is used for calculating a first estimation signal and a preset take over point (TOP) so as to generate an error signal; the hysteresis comparator is used for comparing the first estimation signal with the preset TOP so as to generate a control signal; the first automatic gain control loop is used for generating a first gain control signal according to the control signal so as to control the gain of a first variable gain amplifier; the second automatic gain control loop is used for generating a second gain control signal according to the control signal so as to control the gain of a second variable gain amplifier; and when the first estimation signal leaves the hysteresis region of the hysteresis comparator, the first gain control signal and the second gain control signal are increased or decreased progressively, so that the total gain value varies stably.

The invention discloses a monkshood-tuber tissue culture and rapid propagation method, which comprises the main steps of selection, disinfection and sterilization of an explant, inoculation and induction of callus, induction of cluster buds, root induction, hardening-seedling and transplanting and the like. By carrying out tissue culturing on stem tips, blades, roots, stem sections, leafstalks, seeds and the like of monkshood-tuber as the explants, and inducing a plant to regenerate and rapidly propagate monkshood-tuber seedlings, the inductivity, the differentiation rate and the rooting rate are higher, and the survival rate of the seedlings after being transplanted in culture soil is high. The method can effectively overcome the problems of poor disease resistance, low and unstable output, varietal complexity and the like of a traditional monkshood variety in the production of the monkshood-tuber, realizes the variety purification and rejuvenation through stem tip detoxification, tissue culture and other means, and provides excellent monkshood varieties, and lays a favorable foundation for the factory and scale production of large quantities of high-quality seedlings required by monkshood GAP (Good Agricultural Practices) bases and the like.

The invention provides a construction method of an orthogonal and ortho-laid steel concrete vierendeel sandwich plate floor. The construction method comprises steps as follows: construction preparation, preparation and mounting of a lower rib beam bottom formwork, lower rib and shear key steel bar binding, supporting of shear keys, lower ribs, upper ribs and part of surface sheet formworks, lower rib and shear key concrete pouring, supporting of remaining surface sheet formworks, upper rib and surface sheet steel bar binding, upper rib and surface sheet concrete pouring and formwork removal. The structural system is optimized, and fewer materials are used; the vierendeel sandwich plate floor which comprises surface sheets, the upper ribs, the shear keys and the lower ribs and is formed by hollowing out solid plate concrete without any function replaces a large-section beam, the conversion thickness of the floor is reduced, concrete is saved by 25%-30%, and steel bars are saved by 20%-25%.

The invention relates to a mechanical self-leveling express delivery transporting trolley. The mechanical self-leveling express delivery transporting trolley comprises goods, an anti-skid pad, a sensor, a pressure bearing foam plate, an upper side buffering external spring, an upper side buffering internal spring, a lower side buffering external spring, a lower side buffering internal spring, an article carrying plate, a supporting plate, an upper conical hole, a lower conical hole, a conical rubber pad, a heavy hammer, a fastening bolt, an adjusting nut, a supporting frame, a supporting baffle and a transporting vehicle; the upper conical hole and the lower conical hole are formed in the upper and lower ends of the middle part of the supporting plate; the conical rubber pad is arranged inthe upper conical hole; the heavy hammer is arranged in the conical hole; the bottom end of the heavy hammer is welded to the article carrying plate; a fence is arranged at the upper end of the article carrying plate; the article carrying plate supports the fence in which the goods are placed; the sensor is arranged at the lower end of the article carrying plate; and the sensor can measure the weight of the goods and can judge whether the goods are at the center of the article carrying plate. The mechanical self-leveling express delivery transporting trolley has the advantages that mechanicalautomatic leveling of the transporting trolley is realized by using gravity direction effect of the heavy hammer, and therefore, the mechanical self-leveling express delivery transporting trolley issimple and efficient.

The invention relates to a self-help eye dropping device. The self-help eye dropping device comprises a strip-shaped horizontal support plate, wherein a finger coat is fixedly arranged under the frontend of the horizontal support plate and is used for clamping a finger; a vertical connecting part is fixedly arranged above the front section of the horizontal support plate; a hollow hole is formedin the vertical connecting part, and is used for a container nozzle to penetrate through; elastic clamp sheets are arranged above the horizontal support plate, are used for clamping an eye medicine container body, and are matched in a left and right way; the upper end of the vertical connecting part is also connected with a longitudinal connecting part which is in contact with a forehead, and is provided with a Y-shaped clamp arm assembly; the Y-shaped clamp arm assembly comprises a left clamp arm and a right clamp arm, a left clamp block is arranged in the middle part of the left clamp arm, aright clamp block is arranged in the middle part of the right clamp arm, and the left clamp block and the right clamp block are matched in pair to extrude the eye medicine container body. The self-help eye dropping device has the advantages that a patient is assisted to drop the medicines into eyes by self; the fixed-point, fixed-distance and fixed-eye dropping effect is realized; the eye medicine can be accurately dropped to the target position, and the injury to eyes by the container nozzle is avoided.

The invention discloses an automatic split guard bar device for a highway contingency runway. The guard bar device is fixed in the middle of the highway contingency runway through limiting plug pins on the bottom of each segment of a guard bar, mutual connection of multiple sets of the guard bars is achieved through hasps arranged on the upper portions of the guard bars, each segment of the guard bar is formed by connecting split guard bars in a butt-joint mode through the hasps, and the split guard bars are moved to the two sides of the highway contingency runway after being steadily turned through an electric support rod mechanism and an active castor mechanism which are arranged on one side of each split guard bar. The automatic split guard bar device for the highway contingency runway is reasonable in structure, the using preparation time is effectively shortened, and the unstable potential safety hazards due to the fact that the split guard bars are placed on the two sides of the highway contingency runway are eliminated.

The invention relates to a skidproof composite carpet. The skidproof composite carpet comprises a carpet body and a carpet pad, wherein the carpet body is adhered to the carpet pad through an adhesive; the carpet body is a hair carpet; the carpet pad is a non-woven pad formed by adhering regenerated fiber at a high temperature; a plurality of skidproof parts are arranged below the carpet pad; and fire-resistant fiber is distributed in the carpet body and the carpet pad. The skidproof composite carpet has a simple structure, low manufacturing cost, high air permeability and high elasticity, is safe and convenient to use, can effectively solve the problems of the possible slippage and unstability between the carpet and the coverage surface in the mounting and using processes of the carpet, has fire resistance, and eliminates potential safety hazard in public places.

The invention discloses an MQTT-based theme subscription forwarding management method, apparatus and device, and a storage medium. The method comprises the following steps: analyzing a domain name of an MQTT cloud server into a local IP address through a control server according to domain name hijacking; controlling a first Internet of Things terminal to acquire the analyzed local IP address, and establishing MQTT connection with a server according to the local IP address; controlling the first Internet of Things terminal to carry out MQTT server theme subscription on the server; controlling the server to establish an MQTT connection with the MQTT cloud server; controlling the server to send locally stored MQTT theme subscription information to the MQTT cloud server; controlling the server to inform the first Internet of Things terminal of successful connection with the MQTT cloud server according to a sending result; and controlling the first Internet of Things terminal to resend the terminal state information. According to the MQTT-based theme subscription forwarding management method provided by the invention, the time delay can be shortened, the network flow can be reduced, and the efficiency of an application program and the security of data can be improved.

The invention provides a method for cultivating chyme crops, and belongs to the technical field of crop cultivation. The method comprises the following steps of ridging according to wide and narrow row spacing, sowing the chyme crops in furrows, carrying out full plastic film mulching during sowing, covering the furrows with soil, and harvesting the chyme crops after the chyme crops are mature. Ventilation and light transmission are improved in a wide and narrow row mode; film mulching, temperature increasing and evaporation inhibiting are conducted, alternate arrangement of the furrows, ridge film mulching and rainwater collecting, ridge side film surface rainwater overlaying and in-furrow rainwater gathering are conducted to change rainfall space-time distribution, effective water converted from invalid rainfall smaller than 10 mm is stored and utilized, soil hydrothermal is regulated and controlled in time, compared with open field horizontal cropping, the yield can be increased by about 15%, and compared with full-film- mulching flat cropping, the yield can be increased by about 9%.

The invention discloses a laser welding feeding and positioning device. The device comprises a device body and a clamping mechanism; bottom brackets are connected with the bottom of the device body; atripod is arranged on the right side of the bottom brackets and a motor platform is arranged on the right side of the tripod; a motor is arranged at the top of the motor platform; bases are connectedwith the bottoms of the bottom brackets; fixed screws are arranged at the tops of the bases; a slide rail is arranged on the left side of the top of the device body; and a sliding extensible mechanism is arranged on the right side of the slide rail. Through the arrangement of the slide rail and the sliding extensible mechanism, the device body constitutes a movably upward adjustment function; inoperation of the device, vertical sliding can be realized by collaborative operation of the slide rail and a sliding plate; and with the addition of an extensible structure of an extensible pillar, aclamped workpiece can be move from left to right to a processing position, so manual operation of a worker is not required, the operation efficiency of the device is improved, and safety of the workeris guaranteed.

The invention discloses a power management device which comprises a power circuit and a control unit, wherein the power circuit receives an input power having a voltage value, and the voltage value isrespectively converted into a first converted signal having a first voltage value and a second converted signal having a second voltage value by a first voltage converter and a second voltage converter; the first voltage converter restarts according to a first reset signal, and the second voltage converter restarts according to a second reset signal; the control unit receives the corresponding first converted signal and the corresponding second converted signal, and compares the first voltage value with a first reference range and the second voltage value with a second reference range; when the first voltage value is not in the first reference range and the second voltage value is in the second reference range, the first reset signal is transmitted; and when the first voltage value is inthe first reference range and the second voltage value is not in the second reference range, the second reset signal is transmitted.

A semiconductor chip fine tuning test device disclosed by the present invention comprises a shell, an inner cavity of a box body is provided with a fixing mechanism, the fixing mechanism comprises a first motor, a first screw rod, a first threaded sleeve, a belt, grooved wheels and a clamping rod, the bottoms of the two grooved wheels are rotatably connected to the two sides of the bottom of the inner cavity of the box body through bearing pedestals respectively, and the clamping rod is connected with the first motor. And clamping rods are fixedly connected to one ends of the two belts correspondingly, and the outer walls of the two clamping rods are slidably connected with the openings in the two sides of the top of the box body correspondingly. According to the semiconductor chip fine tuning test device, through cooperation of a first motor, a first screw rod, a first threaded sleeve, belts, grooved wheels, clamping rods, a through groove and a block body, when the device is used, the two belts can respectively drive the two clamping rods to oppositely move left and right, and through sliding connection of the through groove and the block body, the clamping rods can move left and right; therefore, the two clamping rods can stably clamp and fix the chip, and the problem that the chip is not relatively fixed and is easy to deviate is solved.