Abstract: Disclosed is a low-energy-consumption floating automatic oceanographic and meteorological observation platform, comprising a meteorological observation module, a sea surface monitoring module, and a profile observation module. The meteorological observation module is configured to provide a buoyant platform for realizing observation of meteorological data while guaranteeing power supply and providing a space for equipment placement. The sea surface monitoring module is configured to realize observation of sea surface data while preventing the buoyant platform from drifting. The profile observation module is located below the meteorological observation module and configured to complete automatic observation of an ocean profile in a low-energy-consumption manner. Gravity is regulated to change a combined force of buoyancy and gravity to realize upward or downward movements of the device, which effectively replaces the conventional high energy consumption program.

Abstract: The present disclosure provides a method for calculating wellbore friction resistance of a foam drainage gas production well. It is based on the conversion of the parameters of the gas-liquid two-phase flow Mukherjee & Brill model, it defines the liquid film reversal point as the zero friction resistance point, ignores the influence of the negative value of friction resistance, and uses this as a starting point to predict the change of friction resistance. The influence of liquid phase parameters and foaming agent concentration is taken into account in the friction resistance coefficient. An effective calculation method is obtained by combining the experimental data fitting and optimization. The present disclosure better characterizes the wellbore flow condition of the foam drainage gas production well, and provides important theoretical support for the prediction of the wellbore pressure drop of the foam drainage gas production well.

Abstract: Disclosed is a low-energy-consumption floating automatic oceanographic and meteorological observation platform, comprising a meteorological observation module, a sea surface monitoring module, and a profile observation module. The meteorological observation module is configured to provide a buoyant platform for realizing observation of meteorological data while guaranteeing power supply and providing a space for equipment placement. The sea surface monitoring module is configured to realize observation of sea surface data while preventing the buoyant platform from drifting. The profile observation module is located below the meteorological observation module and configured to complete automatic observation of an ocean profile in a low-energy-consumption manner. Gravity is regulated to change a combined force of buoyancy and gravity to realize upward or downward movements of the device, which effectively replaces the conventional high energy consumption program.

Abstract: Provided is a display panel, including a driver backplane, a pixel definition layer, a plurality of light-emitting devices, and a touch line. A plurality of openings are formed in the pixel definition layer. The light-emitting device includes a normal element and at least one privacy element, which are disposed in different openings. The touch line includes a first wiring and a second wiring. An orthographic projection of the first wiring on the driver backplane falls on a periphery of an orthographic projection of the opening, where the privacy element is disposed, on the driver backplane. A distance between an orthographic projection of the second wiring on the driver backplane and the orthographic projection of the opening on the driver backplane is greater than a distance between the orthographic projection of the first wiring on the driver backplane and the orthographic projection of the opening on the driver backplane.

Abstract: The present disclosure provides a method for experimentally determining a critical sand-carrying gas velocity of a shale gas well. The method includes: collecting well structure and production data, calculating parameter ranges of a gas flow velocity and a liquid flow velocity; carrying out a physical simulation experiment of sand carrying in the shale gas well to obtain the sand holding capacity of the wellbore under different experimental conditions, and calculating a sand holding rate; by observing a change curve of the sand holding rate of the wellbore vs. the gas flow velocity, defining a turning point, and sensitively analyzing the influence of other experimental variables on the turning point, to calculate the critical sand-carrying production of the shale gas well under different conditions. Therefore, this calculation method is simple and applicable, and provides a theoretical basis for the optimization design of water drainage and gas production process.

Abstract: The present disclosure provides a blockchain-based green power certification method, apparatus, and system, to pre-process obtained basic data to obtain proof-of-existence data, certify the proof-of-existence data from a production side and a consumption side by using a certification chain and a token chain respectively, and obtain a green power attribute certificate and a green power consumption label if the certification is passed; generate a unique digital identifier for the green power attribute certificate and the green power consumption label separately based on a non-fungible token (NFT), which realizes non-interchangeability, indivisibility, and other characteristics of the certificate and the identifier; and supervise and verify a certification process by using a chain of custody, and generate a corresponding unique blockchain identifier for the certification chain, the token chain, and the chain of custody separately through multi-chain interaction, so as to realize data interaction between blockcha

Abstract: The present disclosure provides a method for experimentally determining a critical sand-carrying gas velocity of a shale gas well. The method includes: collecting well structure and production data, calculating parameter ranges of a gas flow velocity and a liquid flow velocity; carrying out a physical simulation experiment of sand carrying in the shale gas well to obtain the sand holding capacity of the wellbore under different experimental conditions, and calculating a sand holding rate; by observing a change curve of the sand holding rate of the wellbore vs. the gas flow velocity, defining a turning point, and sensitively analyzing the influence of other experimental variables on the turning point, to calculate the critical sand-carrying production of the shale gas well under different conditions. Therefore, this calculation method is simple and applicable, and provides a theoretical basis for the optimization design of water drainage and gas production process.

Abstract: A screen protector film applicator includes a base. The base is provided with a screen accommodating space. The left and right sides of the screen accommodating space are provided with a left accommodating cavity and a right accommodating cavity, respectively. The front side of the screen accommodating space is provided with a front opening. The rear side of the screen accommodating space is provided with a pull-out opening. The center of the screen accommodating space is provided with a cushioning block. The left accommodating cavity is provided with left positioning posts. The right accommodating cavity is provided with right positioning posts. The technical solutions of the present invention have a simple structure and is easy to operate without the turning to professionals of applicating screen protector films or very strong hands-on skills that ordinary consumers can operate.

Abstract: An experimental method for determining flow patterns in vertical wellbore of gas wells at high-pressure conditions, which falls within the technical field of deliquification for gas reservoirs. The method comprises: collecting target block parameters; Developing physical simulation experiment to measure the liquid holdup of vertical wellbore; Constructing similarity dimension number to characterize gas density and change with liquid holdup to represent flow similarity of different gas velocities at different pressures; Utilizing equal liquid holdup to represent flow similarity, fitting similarity dimension coefficient, normalizing flow under different pressure conditions to same similarity dimension number, realizing coincidence of change cure of liquid holdup of normal pressure and medium pressure with similarity dimension number.

Abstract: Offshore wind turbine systems and processes for installing same. The system can include a wind turbine generator that can include a plurality of blades connected thereto. The system can also include a first support arm and a second support arm each having a first end and a second end. The system can also include a support structure that can be configured to float on a surface of a body of water that can include first, second, and third columns. The first end of the first support arm and the first end of the second support arm can each support the wind turbine generator at an elevation above the support structure. The second end of the first support arm can be connected to and supported by the first column. The second end of the second support arm can be connected to and supported by the second column.

Abstract: A mooring system for mooring a vessel floating on a surface of a body of water. In some embodiments, the system can include a base structure configured to be secured to a seabed, a yoke configured to be pivotably connected at a first end to the base structure about an axis of the base structure, a weight connected to the yoke, a turntable that can include a rotating part configured to be disposed on the vessel and a fixed part, a link arm that can include a first end configured to be connected to a second end of the yoke and/or the weight and a second end configured to be connected to the fixed part of the turntable such that the vessel is rotatable with respect to the link arm about a central axis of the turntable.

Abstract: Mooring support structures, systems for mooring vessels, and processes for using same. In some embodiments, a system for mooring a vessel can include a mooring support structure than can include a post connected at a first end to a turntable disposed on a base structure. The post can extend out from the turntable and a yoke head connector can be connected to a second end of the post. A distal end of the yoke head connector can provide a disconnection location such that when a yoke head is disconnected from the yoke head connector, the yoke head can fall by gravity from the yoke head connector without contacting the mooring support structure.

Abstract: Surge damping systems and processes for using same. In some embodiments, a system for mooring a vessel can include a mooring support structure that can include a base structure and a turntable disposed on the base structure. A vessel support structure can be disposed on the vessel. At least one extension arm can be suspended from the vessel support structure. A ballast tank can be connected to the extension arm. A uni-directional passive surge damping system can be disposed on the vessel and can include an elongated tension member connected to the ballast tank that can be configured to dampen a movement of the ballast tank by applying a tension thereto. A yoke can extend from and can be connected at a first end to the ballast tank and can include a yoke head disposed on a second end thereof that can be configured to connect to the turntable.

Abstract: Surge damping systems and processes for using same. In some embodiments, a system for mooring a vessel can include a mooring support structure that can include a base structure and a turntable disposed on the base structure. A vessel support structure can be disposed on the vessel. At least one extension arm can be suspended from the vessel support structure. A ballast tank can be connected to the extension arm. A uni-directional passive surge damping system can be disposed on the vessel and can include an elongated tension member connected to the ballast tank that can be configured to dampen a movement of the ballast tank by applying a tension thereto. A yoke can extend from and can be connected at a first end to the ballast tank and can include a yoke head disposed on a second end thereof that can be configured to connect to the turntable.

Abstract: Mooring systems and processes for using same. In some embodiments, the system can include a first vessel support structure and a second vessel support structure, each disposed on a vessel. Each vessel support structure can include at least one extension arm can be suspended from each vessel support structure. A ballast tank can be connected to each of the at least one extension arms. A first end of a yoke can be connected to the ballast tank and a second end of the yoke can include a yoke head disposed thereon. The system can also include a first mooring support structure and a second mooring support structure, each fixed in place. Each mooring support structure can include a pitch bearing. The yoke heads of the first and second vessel support structures can be connected to the pitch bearings of the first and second mooring support structures, respectively.

Abstract: A joint control method with variable ZVS angles for dynamic efficiency optimization in a WPC system for EVs under ZVS conditions, including: adjusting a phase-shift duty cycle of a secondary active rectifier to control a charging voltage and a charging current of EV's batteries through a charging voltage closed loop and a charging current closed loop, respectively; adjusting a power angle of the secondary active rectifier to control a ZVS angle of the secondary active rectifier through a secondary ZVS angle closed loop; adjusting a phase-shift duty cycle of a primary inverter to control a ZVS angle of the primary inverter through the primary ZVS angle closed loop; determining the current operating case of the WPC system and adjusting the ZVS angles of the primary inverter and the secondary active rectifier to automatically identify an optimal operating point with a maximum charging efficiency through the P&O method.

Abstract: Mooring systems and processes for using same. In some embodiments, the system can include a first vessel support structure and a second vessel support structure, each disposed on a vessel. Each vessel support structure can include at least one extension arm can be suspended from each vessel support structure. A ballast tank can be connected to each of the at least one extension arms. A first end of a yoke can be connected to the ballast tank and a second end of the yoke can include a yoke head disposed thereon. The system can also include a first mooring support structure and a second mooring support structure, each fixed in place. Each mooring support structure can include a pitch bearing. The yoke heads of the first and second vessel support structures can be connected to the pitch bearings of the first and second mooring support structures, respectively.

Abstract: A disconnectable spread mooring and riser tower system for a vessel floating at a water surface. The system comprises a forward chain table assembly releasably connected to the vessel at the bow via a first connector assembly, and an aft chain table assembly releasably connected at the stem via a second connector assembly. Mooring legs are attached to the chain table assemblies and are capable of being anchored at spaced locations on a seafloor. The first and second connector assemblies are arranged and designed to unlock and release the forward and aft chain table assemblies from the vessel. A riser tower system fixed to the seafloor may be located near the moored vessel and flexible jumper hoses can be extended between the riser tower system and the vessel to transfer fluids, air, power and control signals.

Abstract: The present invention discloses a current phase locking and driver pulse generation method for wireless charging for electric vehicles. By monitoring the resonant current iL2 of the receiving coil, the proposed method generates the synchronization signal accurately based on the phase of the current iL2. Moreover, it controls the phases of driver pulses of switching transistors according to the synchronization signal so as to control the turn-on moment and turn-off moment of the switching transistors in the secondary rectifier. As a result, by using the proposed method, the pulse losing of the switching transistors in the secondary active rectifier can be avoided; the stable and reliable phase locking of the high-frequency resonant current and generation of driver pulses can be achieved; the anti-interference capability can be greatly enhanced, and the stability and reliability of the wireless charging system for electric vehicles can also be improved.