Abstract: A camera optical lens is provided, which includes seven lenses in sequence from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The camera optical lens satisfies the following conditions: ?6.50?f5/f6??2.30, 0.035?d6/TTL?0.055, and ?3.50?R7/R8??1.80. f5 represents a focal length of the fifth lens, f6 represents a focal length of the sixth lens, d6 represents an on-axis distance between the third lens and the fourth lens, TTL represents a total track length of the camera optical lens, R7 represents a central curvature radius of an object-side surface of the fourth lens, and R8 represents a central curvature radius of an image-side surface of the fourth lens.

Abstract: A gear transmission and rotation amplification type device for reducing sloshing is arranged inside and located above a body of an LNG storage tank. The device includes a combination disc, a wheel set, an outer sleeve, an overhanging fan blade, ball screws, springs and a sloshing plate. The combination disc is connected with the sloshing plate below through the springs. The combination disc is fixed above an inner wall surface of the body of the LNG storage tank, while the sloshing plate is fitted but not fixedly connected with the inner wall surface of the body of the LNG storage tank. The wheel set, the outer sleeve, the overhanging fan blade and the ball screws are arranged between the combination disc and the sloshing plate and located below the liquid level in the LNG storage tank.

Abstract: A pulse control method and apparatus, an ablation device and system, and a storage medium. The pulse control method comprises: controlling a pulse generator to output a nanosecond pulse sequence and a millisecond pulse sequence, the amplitude of the nanosecond pulse sequence being greater than a preset first threshold voltage, and the amplitude of the millisecond pulse sequence being less than a preset second threshold voltage. The nanosecond pulse sequence having the amplitude greater than the threshold voltage cooperates with the millisecond pulse sequence having the amplitude less than the threshold voltage, such that the effective ablation range can be enlarged, the ablation is more thorough, the muscle contraction amplitude can be effectively reduced, or the muscle contraction probability is reduced.

Abstract: Embodiments of the present application provide a cooperative pulse generation apparatus, device and generation method. The synergistic pulse generation apparatus comprises a drive circuit and a pulse generation circuit. The drive circuit receives a first control signal and a second control signal sent by a host computer, converts the first control signal into a first drive signal, and converts the second control signal into a second drive signal. The pulse generation circuit comprises a first power supply, a second power supply, a first pulse generation module, and a second pulse generation module. The first pulse generation module stores electric energy supplied by the first power supply and discharges the electricity under the control of the first drive signal to form a first pulse signal, and the second pulse generation module stores electric energy provided by the second power supply and discharges the electricity under the control of the second drive signal to form a second pulse signal.

Abstract: A pool cleaner is provided. The pool cleaner includes a housing, a water pump, a power supply, and a switch for controlling start/stop of the water pump, where the power supply is electrically connected to the water pump; a lower portion of the housing is provided with a suction port; the housing is provided with a discharge port and a water inlet; the suction port and the discharge port are connected via a tube; the water inlet communicates with a water discharge passage; the water discharge passage communicates with the tube; and the water pump is configured to drive liquid flow from the water inlet to the water discharge passage. The pool cleaner has the following advantages. No additional components such as impeller are disposed inside the entire tube, allowing large particles to pass smoothly.

Abstract: The present invention relates to a rebound composite electromagnetic energy dissipation device for reducing sloshing with a liquid-filled ball for a large liquefied natural gas (LNG) storage tank. When the liquid surface sloshes around, the gas spring is pulled by the steel strand to produce vertical displacement and provide a restoring force, and the vertical displacement of the gas spring drives the fan blades on the sleeves of the ball screws at the bottom to rotate in the damping fluid, consuming energy. The present invention uses hydraulic transmission instead of mechanical transmission of traditional piston motion, and the horizontal pistons produce horizontal displacement in the case of pressure unbalance, thus increasing the flexibility of horizontal piston motion; magnets are arranged in the horizontal slideways and the horizontal pistons to intensify the motion of the horizontal pistons and the relative motion between the horizontal pistons and the interior.

Abstract: An ion-electron mixed conductor ceramic comprises Ag-modified LLZTO ceramic; a preparation method of the ion-electron mixed conductor ceramic includes the following steps: adding LLZTO ceramic into a solution containing a soluble silver salt and a reducing agent to obtain silver oxide, and reacting the silver oxide under the action of the reducing agent to prepare the Ag-modified LLZTO ceramic; a composite solid electrolyte comprises the aforementioned ion-electron mixed conductor ceramic, a lithium salt and a polymer; a battery electrode material comprises the aforementioned ion-electron mixed conductor ceramic; a battery comprises the aforementioned ion-electron mixed conductor ceramic or the aforementioned solid electrolyte; when the modified ceramic is applied in electrode materials, it can simultaneously play a role in transporting electrons and ions, improve electrode kinetics, and has good application prospects in the battery field.

Abstract: The present disclosure provides a display substrate, a preparation method thereof, and a display apparatus. The display substrate includes a base substrate and a drive structure layer disposed on the base substrate, wherein the drive structure layer includes a first transistor and a second transistor arranged side by side, the first transistor includes a low temperature poly silicon transistor, and the second transistor includes an oxide transistor; the first transistor includes a first bottom gate electrode simultaneously served as a shielding layer, the second transistor includes a second bottom gate electrode simultaneously served as a shielding layer, and the first bottom gate electrode and the second bottom gate electrode are arranged in a same layer.

Abstract: A solid electrolyte, a method for manufacturing the solid electrolyte, and a battery are disclosed. The solid electrolyte includes a polymer, a silver salt, and an alkali metal salt. When the solid electrolyte provided in the present disclosure is matched with a metal such as lithium metal, a gradient SEI layer rich in inorganic components can be in-situ generated during electrochemical cycling. The gradient SEI layer includes an outer layer rich in silver-containing inorganic components and an inner layer rich in lithium-containing inorganic components. Thus, the battery possesses high ionic conductivity and stability against the lithium metal anode, and the in-situ constructed SEI layer can uniformize lithium ion deposition, inhibit lithium dendrite growth, realize stable cycling under high current, and exhibit excellent low-temperature electrochemical performance.

Abstract: The present disclosure provides natural gas pipelines, methods for filling an explosion suppression component, and methods for an explosion suppression experiment. The natural gas pipeline may include a pipeline body and an explosion suppression component. The explosion suppression component may be provided within the pipeline body and may include at least one of a first explosion suppression component and at least one second explosion suppression component. The method may include forming a first explosion suppression component by performing a first process on an explosion suppression material; and forming at least one second explosion suppression component by performing a second process on the explosion suppression material. The first process may include cutting and winding, and the second process may include stacking and cutting seam expansion.

Abstract: Disclosed is a double-capped micromolecule electron donor material, its preparation and application. The micromolecule electron donor material comprises a molecular structure as shown in formula (I). The double-capped micromolecule electron donor material of the application has good solubility, stability, photoelectric property and solution processability, and may be used as an electron donor material for all-micromolecule organic solar cells.

Abstract: The present invention relates to an optical system, and specifically, to a telescope augmented reality optical system. A telescope augmented reality optical system comprises two optical path systems. One optical path system is a telescopic optical path system for realizing a telescopic function, and the other optical path system is an AR optical path system for realizing superimposed extended function information. Compared with a conventional technology, the present invention has the following beneficial effects: The telescope AR optical system of the present invention is easy to use, provides comfortable viewing experience, and produces clearer imaging. In the present invention, a projecting method is used. The extended function information is projected onto an eyepiece image plane, so as to be superimposed with the scene content. The superimposed image is magnified by an eyepiece group and then enters the human eye.

Abstract: Embodiments of the present disclosure provide a protective device for a submarine pipeline, comprising an internal pipeline, a protective casing, and a support explosion-proof assembly; wherein the protective casing is disposed outside the internal pipeline, and a cavity body is disposed between the protective casing and the internal pipeline; the support explosion-proof assembly is disposed in the cavity body; the support explosion-proof assembly includes a plurality of support columns, the support columns are disposed in the cavity body, and one end of the support columns away from the protective casing supported on the internal pipeline, the plurality of the support columns disposed at intervals in a circumferential direction along the internal pipeline, and an explosion-proof baffle with elastic deformation capability is disposed between two adjacent support columns.

Abstract: A series-parallel fluid switching structure, a fluid pump, and a pool cleaner are provided. The series-parallel fluid switching structure includes a first cavity, a second cavity, and a switching mechanism, where the first cavity is provided with a first water inlet, and the second cavity is provided with a second water inlet; a first passage is disposed between the first cavity and the second cavity; the first passage includes an inlet communicating with the first cavity and an outlet communicating with the second cavity; the first passage is provided with a first water outlet communicating with an external environment; the second cavity is provided with a second water outlet; the switching mechanism is configured to control opening/closing of the first water outlet, opening/closing of the outlet of the first passage, and opening/closing of the second water inlet.

Abstract: The present disclosure discloses a camera optical lens including seven lenes. From an object-side to an-image side, the camera optical lens includes: a first lens having a negative refractive power; a second lens having a negative refractive power; a third lens having a positive refractive power; a fourth lens having a positive refractive power; a fifth lens having a positive refractive power; a sixth lens having a negative refractive power; a seventh lens having a positive refractive power; wherein the camera lens satisfies the following conditions: ?1.30?f1/f?1.00; 0.02?d4/TTL?0.06; n2?1.70; 0.10?BFL/TTL?0.30. The camera optical lens can meet design requirements of large aperture and wide angle.

Abstract: A camera optical lens sequentially includes seven lenses: a first lens having negative refractive power, a second lens having negative refractive power, a third lens having refractive power, a fourth lens having positive refractive power, a fifth lens having positive refractive power, a sixth lens having positive refractive power, and a seventh lens having negative refractive power. Following relational expressions are satisfied: 1.50?f4/f5?3.40; 0.90?R5/R6?1.40; 170?FOV/Fno?200. The camera optical lens according to the present disclosure has excellent optical characteristics of sufficient aberration correction, large aperture, wide-angle and ultra-thinness, and is particularly suitable for a mobile phone camera lens assembly and a WEB camera lens which are composed of camera elements such as CCD, CMOS with high definition, and a vehicle-mounted lens.

Abstract: A synergistic pulse generation circuit comprises a first power supply, a first pulse generation module electrically connected to the first power supply, a second power supply, and a second pulse generation module electrically connected to the second power supply. The first pulse generation module comprises n stages of first pulse generation units, each of which is configured to receive electrical energy provided by the first power supply and store same, so that x of the first pulse generation units receiving a first control signal discharge to form a first pulse applied to a load. The second pulse generation module comprises m stages of second pulse generation units, each of which is configured to receive electrical energy provided by the second power supply and store same, so that y of the second pulse generation units receiving a second control signal discharge to form a second pulse applied to the load.

Abstract: Provided is a discharge device for a sintering furnace. The discharge device includes a material bin connected to a body of the sintering furnace, a conveying hopper, a first valve assembly, a first gas exchange assembly and a controller. The conveying hopper has a feed inlet, a discharge outlet and a first gas exchange port. The first valve assembly is located at the feed channel to control opening or closing of the feed channel. The first gas exchange assembly is connected to the first gas exchange port. The first gas exchange assembly outputs gas from the first gas exchange port and deliver protective gas into the conveying hopper. The controller is electrically connected to the first gas exchange assembly and the first valve assembly to control the first gas exchange assembly to be activated when the conveying hopper has completed conveying and the first valve assembly is closed.