7results about How to "Achieve dual control" patented technology

The invention discloses a double-control intelligent measuring and adjusting water injection tool suitable for an offshore oilfield. Comprising an upper connector, a centralizing outer cylinder, a main body, a lower connecting cylinder, a lower connector, a center adjusting cylinder, a first pre-tightening spring, a second pre-tightening spring, an adjusting seat, a water nozzle seat and a motor. The water faucet has the beneficial effects that the opening degree of the water outlet is controlled through the water nozzle base and the shaft sleeve, and dual control is achieved.

The invention relates to a user permission control method and device, computer equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: when a function access request for a page module sent by a user through a terminal is received, obtaining a user function role and a user data role according to a user identifier of the user; determining a user function permission of the user according to the user function role, issuing page data of the page module to the terminal when determining that the user has a function access permission to the page module according to the user function permission, and determining a user data permission of the user according to the user data role; and when a data access request triggered by the user on the page module through the terminal is received, processing the data access request according to the user data permission to obtain a data processing result, and feeding back the data processing result to the terminal. By adopting the method, the data security can be improved.

The utility model provides a single-cylinder driven heavy load lifting saddle, which comprises a fixed base, a lifting seat, a fixed saddle, a lifting hydraulic cylinder and a guide device, a support seat is arranged at the top of the fixed base, the support seat supports the lifting seat, the fixed saddle is arranged at the top of the lifting seat, and the telescopic end of the lifting hydraulic cylinder corresponds to the center of the bottom of the lifting seat. The single-cylinder independent drive is adopted, the risk of instability caused by low synchronization precision of the hydraulic cylinders is avoided, the upgrading speed is adjustable, and the risk of severe working conditions such as overload and pipe explosion is avoided.

The utility model discloses a double-control single-beam crane control device, which relates to the automatic control technology and comprises a manual remote controller, three function button groups are arranged on the manual remote controller, two buttons are arranged in each function button group, each button is electrically connected with a contactor coil, a mounting box is mounted on the back surface of the manual remote controller, and the contactor coil is electrically connected with the mounting box. A wireless receiver and relays of which the number is consistent with that of the buttons are mounted in the mounting box; the wireless receiver is wirelessly connected with a wireless remote controller, a plurality of output terminals of the wireless receiver are connected with a plurality of relay coils in a one-to-one correspondence manner, and a normally open contact of the nth relay is electrically connected to the nth button; and in each function button group, the normally closed contact of the nth relay is electrically connected to the (n + 1) th button, and the normally closed contact of the (n + 1) th relay is electrically connected to the nth button. According to the utility model, the problem that a worker can only control the single-beam crane at a short distance is solved, the personal and equipment safety is reduced to the greatest extent, and the production stability is facilitated.

The invention belongs to the technical field of medicines, and particularly relates to a microneedle patch for disguising a macrophage cell membrane and a preparation method of the microneedle patch. Degradable high polymer material nano-particles camouflaged by the macrophage membrane are embedded in a microneedle array of the microneedle patch camouflaged by the macrophage membrane, and the degradable high polymer material nano-particles camouflaged by the macrophage membrane are wrapped with gambogic acid and oleic acid functionalized cerium dioxide nano-particles. Nanoparticles of the microneedle patch jointly load gambogic acid and oleic acid functionalized cerium dioxide, through microneedle transdermal drug delivery, active targeting of the drug to the liver is achieved by using natural inflammatory taxis of a macrophage membrane, the anti-inflammatory effect of gambogic acid and the anti-oxidation effect of cerium dioxide are synergistically exerted, polarization of macrophages is adjusted, and the anti-inflammatory effect of the drug on the liver is achieved. Therefore, the liver injury caused by the septic shock is treated.

The invention discloses a preparation method of a coordination polymer containing CuII and research on the inhibition effect of the coordination polymer on soil urease and nitrifying bacteria, and relates to the technical field of fertilizer.The preparation method comprises the steps that 3-aminopyridine and fumaric acid serve as raw materials to synthesize N1, N4-bis (3-pyridyl)-2-butenamide, then CuCl2. 2H2O and the synthesized N1, N4-bis (3-pyridyl)-2-butenamide are used for preparing the coordination polymer containing CuII. The novel coordination polymer [Cu (3-bbpa) (5-HIPA). H2O] is synthesized from N, N, N, N ', N'-bis (3-pyridyl)-2-butenamide and 5-hydroxyisophthalic acid by a hydrothermal method, and the crystal structure of the novel coordination polymer [Cu (3-bbpa) (5-HIPA). H2O] is analyzed to research the influence of the novel coordination polymer as an inhibitor on soil urease and nitrifying bacteria. The difunctional inhibitor is studied to delay the conversion process of urea from urea nitrogen to ammonium nitrogen and ammonium nitrogen to nitrate nitrogen, overcomes the defect of single inhibition capability of a traditional inhibitor, is strong in inhibition capability, low in toxicity, low in cost and simple in synthesis method, can effectively improve the utilization rate and stability of the fertilizer urea, and has a wide application prospect. Nitrogen loss in agricultural activities is reduced, the fertilization cost is reduced, and the grain yield is increased.

The utility model belongs to the technical field of traction device, provide a kind of winding and unwinding structure and capstan, winding and unwinding structure includes: support frame;Drum, rotatably installed on support frame;Pressing plate, rotatably set on support frame;First elastic member, one end is connected to support frame, the other end acts on pressing plate;Roller assembly, including the roller that can be axially moved and rotatably set on support frame, and the second elastic member being set between support frame and roller.Compared with prior art, the utility model is by setting pressing plate and roller assembly, on the one hand, pressing plate exerts sustained radial compression force on the rope under the action of first elastic member, ensure that each layer of rope is tightly fitted, prevent loosening or skipping rope;On the other hand, roller assembly maintains contact with the rope under the pre-pressure of second elastic member, and when the rope approaches the edge of the drum, it exerts axial thrust on it, pushes it away from the limit area and guides it back to the middle winding area, effectively prevents one-sided stacking.