机械手驱动电机

TARGET FOR DRUG TREATMENT OF TUMOR METASTASIS AND USE THEREOF

Disclosed is a use of PRAK as a drug target in screening a drug for inhibiting or preventing tumor cell metastasis. Based on the discovery that PRAK can be used as a target for tumor cell metastasis, further provided is a drug capable of inhibiting or preventing tumor cell metastasis. The active ingredient of the drug can reduce the expression level of PRAK or inhibit the bioactivity of PRAK, and the inhibition or prevention of tumor cell metastasis can be achieved by regulating the cell migration and the expression and/or function of HIF1α, MMP2 and/or EMT series molecules.

Motor shaft cooling internal structure and manufacturing method thereof

The invention relates to a motor shaft cooling internal structure and a manufacturing method thereof, the cooling internal structure comprises an embedded internal flow channel structure in a motor shaft, the surface of the embedded internal flow channel structure is provided with a spiral flow channel, the middle part of the spiral tooth shape is provided with a sealing ring, and two end parts of the embedded internal flow channel structure are provided with connecting threads connected with a cooling liquid inlet/outlet device. A cooling liquid flow channel is arranged in the cooling liquid inlet/outlet device; the manufacturing method comprises the steps that firstly, a pre-machined inner runner of a motor shaft blank is filled with the compression-resistant deformable mold core, and the outer diameter of the motor shaft blank is reduced through the rotary forging technology; then, the outer wall of the motor shaft blank is subjected to uniform hole shrinkage through rotary forging, ...

Aircraft brake temperature prediction method and system

The invention relates to an aircraft brake temperature prediction method and system. The method comprises the steps that an aircraft operation scene is simulated, so that relevant parameter information is obtained, and the relevant parameter information comprises the wheel speed, the brake pressure and the atmospheric temperature; the wheel speed, the brake pressure and the atmospheric temperature are imported into a brake performance model to analyze and predict the brake temperature, and a brake temperature safety threshold value is set in the brake performance model; the brake temperature is displayed on a terminal equipment interface, and when the predicted brake temperature is higher than a brake temperature safety threshold value, a fault alarm signal is generated on the terminal equipment interface; wherein the brake performance model comprises a brake acting module, a brake cooling module and an inter-equipment heat transfer module. According to the technical scheme, the airplane ...

High-safety reinforcing device for geotechnical engineering side slope

The high-safety reinforcing device for the geotechnical engineering side slope comprises a geotechnical engineering side slope body, and a plurality of anchoring grooves are formed in the slope surface of the geotechnical engineering side slope body through drill rods; anchoring piles are arranged in the anchoring grooves, and the anchoring piles and the geotechnical engineering slope body are poured into an integrated fixing structure through concrete in the anchoring grooves. According to the anchoring concrete structure, the drilling rod is used for grooving in different drilling angles, the anchoring groove can be grooved into the shape that the groove opening and the groove bottom are both in a horn mouth shape, meanwhile, the first reinforcing ribs and the second reinforcing ribs are arranged in a crossed mode, and the anchoring pile column is poured into the anchoring groove through concrete, so that the anchoring concrete structure after concrete pouring has a good anchoring effect ...

Roadbed structure

The invention discloses a roadbed structure, and relates to the technical field of roadbeds, the roadbed structure comprises: a roadbed having an upper surface and a lower surface corresponding to each other; the anti-seismic mechanism comprises a first reinforcing steel bar layer, a second reinforcing steel bar layer located below the first reinforcing steel bar layer and a first supporting piece, the first reinforcing steel bar layer and the second reinforcing steel bar layer are arranged in the roadbed, the cross section of the first supporting piece in the vertical direction is in an arc shape, and the cross section of the second supporting piece in the vertical direction is in an arc shape; the first supporting piece is arranged between the first steel bar layer and the second steel bar layer, the two ends of the first supporting piece face the lower surface of the roadbed, and the outer arc face of the first supporting piece faces the upper surface of the roadbed. The anti-seismic ...

Light source device and projection system

The invention provides a light source device which comprises a first light source, a second light source, a light splitting and combining element and a compound eye dodging element. The second light source is used for emitting second light; the light splitting and combining element is arranged on light paths of the first light and the second light, the first light emitted from the first light source penetrates through the light splitting and combining element, and the second light emitted from the second light source is reflected by the light splitting and combining element; the compound eye dodging element is arranged on a light emitting path of the light splitting and combining element, the compound eye dodging element comprises a base body and a plurality of micro-lens arrays, the micro-lens arrays are sequentially arranged on the base body in the first direction, every two adjacent micro-lens arrays are staggered in the second direction, and the first direction is different from the ...

Side slope protection device for road

The invention provides a highway slope protection device which comprises slope protection mechanisms arranged on slopes at the bottoms of mountains on the two sides of a highway; the mountain protection mechanism is arranged at the upper end of the mountain slope and located on the upper portion of the slope protection mechanism; a preset angle with a downward vertex is formed between the mountain body protection mechanism and the mountain body, and a telescopic opening is formed between the bottom of the mountain body protection mechanism and the mountain body; and the early warning mechanism is used for monitoring the humidity of the mountain in real time and giving out early warning when the humidity of the mountain exceeds a preset threshold value. According to the side slope protection device for the road, falling foreign matter can be prevented from directly hitting the road, the safety of vehicles and pedestrians on the road is effectively guaranteed, early warning is conducted on ...

Composite material cutting system

The invention relates to the technical field of composite material processing, in particular to a composite material cutting-off system which comprises a feeding device, a cutting-off device, a cutting-off device and a cutting-off device. The conveying device is connected to the feeding device and used for conveying the strip materials; the cooling device is arranged on the conveying device and used for cooling the strip materials conveyed by the conveying device; and the material cutting device is connected to the conveying device and is used for cutting off and granulating the cooled strip materials. By means of the arrangement, human intervention is reduced, the labor cost is reduced, strip materials can be cooled in the conveying process, a cooling procedure does not need to be independently arranged, the production efficiency is improved, and continuous production of composite material granules is achieved.

Control method and device of ball mill

The invention provides a ball mill control method and device, and the method comprises the steps: obtaining a feature signal of a ball mill, and carrying out the preprocessing of the feature signal; wherein the characteristic signals comprise motor current of the ball mill, barrel vibration signals of the ball mill and sound intensity of the ball mill; determining a load state corresponding to the characteristic signal of the ball mill based on a preset corresponding relationship between the characteristic signal and the load state; determining the feeding quantity of the ball mill based on the load state of the ball mill, and controlling the feeding operation of the ball mill based on the feeding quantity. In the mode, a plurality of parameters such as motor current, barrel vibration signals and sound intensity of the ball mill are taken as characteristic signals, and the load state of the ball mill is comprehensively judged through the plurality of parameters; moreover, the corresponding ...