12results about How to "Reduced feasibility" patented technology

The present invention provides a test device for shield cutterhead mud cakes taking into account high temperature and high pressure. A double-layer cylindrical test cylinder is sealed at the bottom by a cylindrical cylinder bottom cover (4). The top of the double-layer cylindrical test cylinder is open. A cylindrical inner cylinder top cover (3) is movably arranged at the top opening. An electric-controlled jack (5) for applying vertical pressure is connected to the upper surface of the cylindrical inner cylinder top cover (3). A plurality of electrically controllable heating rods (13), a plurality of unconfined compressive strength sample molds (11) and a plurality of direct shear sample molds (12) are arranged inside the double-layer cylindrical test cylinder. The present invention also discloses a test method for shield cutterhead mud cakes taking into account high temperature and high pressure. The present invention can study the mechanism or conditions of cutterhead mud cakes under the action of high temperature and high pressure, which is more consistent with the actual situation and avoids the operation of injecting a dispersant to decompose the mud cakes after the mud cakes are formed in shield practice.

The application discloses an iPSC reprogramming kit and application thereof, and belongs to the technical field of induced pluripotent stem cells. The kit comprises a combination of small molecule compounds or a combination of multiple culture media, and is used for reprogramming T cells into iPSCs. The compound combination can be used for phased chemical regulation in different stages of Sendai virus infection. The application combines Sendai virus and chemical regulation, and can directly start the reprogramming of T cells from less than 10,000 T cells (such as a tube of micro peripheral blood), without an intermediate expansion step. Meanwhile, the synergistic effect of chemical regulation and Sendai virus can improve the reprogramming efficiency to 5-10 times of that of an existing scheme.

The embodiment of the invention provides a display panel and a display device. The display panel comprises a plurality of shift registers which are sequentially cascaded along a first direction; the pixel circuit group comprises at least two pixel circuit units arranged along a first direction; wherein in the first direction, at least part of the pixel circuit units do not comprise shift registers. According to the embodiment of the invention, a plurality of pixel circuit units are continuously prepared in the first direction and are not separated by a shift register, so that the preparation compactness of a circuit structure in the display panel is improved, a space nesting condition is provided during circuit preparation, and the space utilization rate during wiring preparation is improved. The feasibility of reducing the area occupied by the circuit structure for preparing the pixel circuit unit and the shift register circuit is improved, enough avoiding space is reserved at the edge position of the display panel, available space is provided for preparing other types of leads, and the applicability of the display panel in a narrow-frame or frameless display device is improved.

This invention discloses a high-strength, high-elongation, low-hardness natural rubber and its preparation method. By weight, the high-strength, high-elongation, low-hardness natural rubber comprises the following components: 100 parts natural rubber, 1.5-3 parts crosslinking agent, 0.8-2 parts accelerator, 10-20 parts reinforcing agent, 5-15 parts softener, 1-3 parts antioxidant, and 3-8 parts activator. The high-strength, high-elongation, low-hardness natural rubber has a tensile strength ≥20 MPa, an elongation ≥700%, and a Shore A hardness of 35-45. Under normal operating conditions of -20℃ to 80℃, the fluctuation range of the tensile strength and elongation is controlled within ±5%, and the Shore A hardness fluctuation is ≤±2. This invention solves the technical problem of achieving a balance between high strength, high elongation, and low hardness in existing natural rubber formulations. The formulation components of this invention are widely available, the preparation process is simple, and the production cost is controllable. It can be widely applied in multiple fields and has extremely high practical value and promising prospects for promotion.

The present invention discloses a zero-point calibration and control method for needle insertion of an ophthalmic surgical robot, comprising the following steps: system initialization, a sensor is arranged at the zero-point position, and it is determined whether a slider with a surgical instrument triggers the sensor; if triggered, the slider is controlled to move in the direction of needle insertion until the sensor changes to an untriggered state; if not triggered, the next step is directly performed; zero-point addressing, the slider is controlled to move in the opposite direction of needle insertion, and when the sensor state changes from untriggered to triggered, the position is recorded as the zero-point position; then the slider continues to move in the opposite direction of needle insertion; zero-point position verification is performed to complete zero-point calibration. The beneficial effects of the present invention are: it brings innovative technical solutions to the field of ophthalmic surgery, which not only improves the accuracy and efficiency of surgical operations, but also reduces the cost of equipment, and ensures the long-term stability of the system, which has a positive impact on the treatment of patients and the development of medical institutions.

The embodiment of the application provides a lightweight model cloud edge collaborative self-training evolution method for an industrial scene, and belongs to the technical field of intelligent industry. The method forms a lightweight representation of a mutation period in a structured log and a window statistical manner on the edge side, and only returns key samples and key contexts when a trigger condition is met, thereby reducing the return bandwidth and return cost. At the same time, the cloud end cognitive writeback provides weak supervision and enhancement instructions for the mutation samples, so that the lightweight edge model has the feasibility of low-cost self-training. Further, through the hierarchical conflict buffer and dynamic gating mechanism, the noise samples are inhibited from damaging the iteration, and the stability after going online is guaranteed through conflict suppression and stability maintenance constraints. Finally, through the effect association of the new inference log and the backflow package, reusable continuous optimization is formed, so as to realize the reduction of edge inference misjudgment rate and the improvement of inference stability, and the real-time and lightweight deployment constraints are also considered.

This invention belongs to the field of flowmeter technology and discloses a method for optimizing the impeller of a turbine flowmeter. The method includes: S1: collecting data on the physical properties, operating range, and performance indicators of the medium through a system to establish clear design constraint data; S2: integrating streamlined and multi-lead design concepts, and determining the blade structural parameters through mathematical modeling and simulation analysis; S3: ensuring precise matching between the processing process and design objectives through parameter modeling, accuracy threshold setting, process coordination, and data linkage; S4: manufacturing an impeller prototype based on the processing technology, and calibrating the blade size and angle parameters using equipment; S5: verifying linearity and starting flow rate indicators through data acquisition and analysis, and iteratively optimizing design and processing parameters; S6: establishing a large-scale batch production process based on the optimized final parameters. This invention solves the problems of large starting flow rate, poor linearity, and insufficient consistency of metering accuracy in turbine flowmeters under low Reynolds number conditions.

The invention discloses a self-supporting floor formwork system and a method for manufacturing a cast-in-place reinforced concrete floor by using the system, the system is used for the cast-in-place reinforced concrete floor, and the self-supporting floor formwork system comprises a plurality of steel structure beams arranged on a steel structure frame and used for supporting the bottom of the cast-in-place reinforced concrete floor; the floor slab bottom die is arranged between two adjacent steel structure beams on the same layer and is used for forming a floor slab; the position adjusting mechanism is arranged at the bottom of the floor slab bottom die and used for adjusting the height of the floor slab bottom die, the position adjusting mechanism comprises a supporting steel beam and a pair of end supporting structures detachably connected to the ends of the supporting steel beam, and the end supporting structures are placed between an upper flange plate and a lower flange plate of the steel structure beam; the vertical height of the supporting steel beam is adjusted. The construction method has the beneficial effects that the rigidity is large, the deflection is small, cracks of the floor slab during construction are greatly avoided, the floor slab bottom die is detachable, and subsequent leakage maintenance is facilitated; less construction materials are used, mounting and dismounting are flexible and convenient, and damage to the steel beam structure is small.

The invention discloses a high-comfort high-stability rotatable non-power bogie for a tramcar, and belongs to the technical field of tramcar bogies. The system comprises a framework assembly, wheel set axle box devices arranged at the two ends of the framework assembly and connected with the framework assembly through primary suspension devices, and a secondary suspension and swing bolster device arranged in the middle of the framework assembly. The secondary suspension and swing bolster device is connected with the vehicle body through a swing bolster assembly; the traction device is connected with the swing bolster assembly and the framework assembly; the foundation brake device is connected to the wheel set axle box device and the framework; the projection section of the framework assembly on the horizontal plane is of a structure shaped like a Chinese character'ri ', the framework assembly is projected on the plumb bob plane, a first lower groove structure used for bearing the swing bolster assembly is formed in the middle of a framework body of the framework assembly, a second lower groove structure is formed in the middle of a swing bolster of the swing bolster assembly, and the second lower groove structure is connected with a vehicle body through the center pin assembly. The invention has the advantages of favorable curve passing capacity, high comfort and high stability.

The invention discloses a simple and efficient integrated potassium ferrate preparation device and method, which relates to the technical field of solid potassium ferrate preparation, and comprises: a mixing box, which can mix sodium hypochlorite solution with potassium hydroxide solution to form an alkaline sodium hypochlorite solution, a preparation box which can mix alkaline sodium hypochlorite solution with trivalent iron solid powder to form a potassium ferrate solution, a centrifugal filter device which can centrifugally filter the potassium ferrate solution to form a filtrate and a potassium ferrate solid raw material, the potassium ferrate solid raw material is mixed with an alkali solution in a solid collector to form a potassium ferrate solid coarse material, a purification device which can rinse the potassium ferrate solid coarse material to form a potassium ferrate solid fine material, and a drying device which can dry the potassium ferrate solid fine material to form a potassium ferrate solid product. The invention simplifies the preparation process, reduces the maintenance time caused by the independence difference between the equipment, improves the preparation efficiency, improves the purity and product quality of the potassium ferrate solid, and saves the preparation cost.

The utility model relates to the field of positioning and clamping devices, and discloses a positioning and clamping device for injection mold production, which comprises a workbench, a placing block is fixedly connected to the center of the lower surface of the workbench, a sliding groove is formed in the middle of the upper surface of the placing block, and first bidirectional threaded rods are rotatably connected to the centers of the inner walls of the two sides of the sliding groove; compared with a traditional positioning and clamping device for production of the injection mold, the positioning and clamping device for production of the injection mold has the advantages that the first limiting plate and the second limiting plate of the positioning and clamping device for production of the injection mold are matched with each other in a clamping manner and are both matched with the workbench in a clamping manner; and in this way, when the mold is limited and fixed through the first limiting plate and the second limiting plate, the firmness is improved, the feasibility of clamping and fixing the mold due to accidental disconnection is reduced, and therefore the use safety of the device is improved.