Abstract: A sensing platform for continuous water resource monitoring by electrochemical detection and solution parameter correction is provided. The sensing platform employs a solid-state electrolyte three-electrode cell, creating a high ionic strength environment within the solid-state electrolyte membrane, which is in ion exchange equilibria with the sampled solution. This device may be used as a standalone sensor in environments where the water parameters (pH temperature, and ionic strength) are controlled, or in concert with compensation sensors where water parameters are not controlled.

Abstract: The present disclosure discloses an electrical intelligent concealed box structure device, including an electrical product assembly and a concealed box assembly which are clamped with each other; a safety door and an elastic sheet are arranged in sequence in the concealed box assembly and close to the electrical product assembly; and the electrical product assembly is driven to be inserted into the elastic sheet to drive the electrical product assembly to keep being electrically connected to the concealed box assembly. According to the electrical intelligent concealed box structure device provided in the present disclosure, the safety door in an initial state covers the elastic sheet through reset springs to protect the elastic sheet. After an insertion sheet is inserted, the safety door can slide along a wiring frame along the inclined safety door and the reset springs on two sides, so as to expose the elastic sheet, and the insertion sheet is conveniently inserted into the elastic sheet.

Abstract: A method for composite monitoring on hydrogen and a temperature of a battery energy storage power station includes: obtaining a first temperature and a second temperature of at least one monitoring point in each monitoring unit based on a group of optical fibers deployed on a battery surface in the monitoring unit, in which the group of optical fibers at least includes a first optical fiber configured to measure the first temperature of a battery body, and a second optical fiber coated with a hydrogen sensitive material configured to measure the second temperature of a battery exterior; and determining a hydrogen concentration of each monitoring point respectively based on a difference between the first temperature and the second temperature corresponding to the monitoring point.

Abstract: A lithium battery performance scoring calculation method includes acquiring data during operation of a lithium battery and uploading the data to a lithium battery performance scoring database; constructing a lithium battery performance scoring system based on the lithium battery performance scoring database from three dimensions of battery nameplate attributes, operational attributes, and environmental attributes; constructing a battery performance scoring calculation model based on a fuzzy comprehensive evaluation method, and calculating scores of respective performance metrics of the lithium battery.

Abstract: A multi-anode electrolytic cell relating to molten salt lithium electrolysis. The cell includes a sealed container with at least two electrode groups uniformly arranged inside. Each group has an anode and a cathode, and the top end of the anode penetrates the top end of the sealed container to protrude out of the sealed container. A separation mesh is arranged on the outer side of the anode. The cathode is arranged on the outer side of the separation mesh and connected with a conducting plate. The top end of the conducting plate protrudes out of the top end of the sealed container. A bottom-removed collecting hood is arranged above the cathode such that it surrounds the outer side of the anode. The physical fields in the sealed container are uniformly distributed by uniformly arranging the electrode groups, thereby ensuring a continuous and stable electrolysis process.

Abstract: An rAAV-delivered Fc-engineered VEGF receptor fusion protein or an anti-VEGF antibody is provided and applied to the treatment of angiogenesis-related fundus diseases, such as age-related macular degeneration, wet maculopathy, diabetic retinopathy and other diseases. Based on the aflibercept-expressing gene, the recombinant AAV delivery is used to achieve long-term stable expression of a target gene in the RPE layer by means of genetic modification and vector optimization, thereby delivering an optimized target gene sequence to fundus cells of a patient.

Abstract: An optimal configuration method and device for energy storage capacity of an optical storage system, and apparatus and storage medium are provided, and relates to the photovoltaic field. The specific steps includes: obtaining original output data of a photovoltaic power station for step output; constructing a model of genetic algorithm, and determining algorithm parameters and a fitness function of the genetic algorithm; performing optimization operation based on the genetic algorithm and the original output data to obtain a recommended energy storage capacity, and building an energy storage device according to the recommended energy storage capacity.

Abstract: A large model-based recommendation method includes: determining description information of interested content corresponding to a target user; inputting a content to be recommended, the description information of interested content and current popular search sentences into a large model to generate at least one recommendation card corresponding to the content to be recommended, in which the recommendation card contains a recommendation word associated with the content to be recommended; obtaining a current behavior characteristic of the target user; and in response to the current behavior characteristic satisfying a display condition of the recommendation card, displaying the recommendation card corresponding to at least one content to be recommended.

Abstract: A lithium salt-free composite solid electrolyte membrane and a preparation method thereof are provided. The composition of the lithium salt-free composite solid electrolyte membrane includes: micro-nanoscale garnet-type solid electrolyte and polymer; where a mass ratio of the micro-nanoscale garnet-type solid electrolyte to the polymer is (60-100):(5-40); a particle size of the micro-nanoscale garnet-type solid electrolyte is 100 nm-2 ?m. The disclosure also provides a preparation method for the lithium salt-free composite solid electrolyte membrane. The lithium salt-free composite solid electrolyte membrane prepared by the disclosure has controllable morphology and thickness, and does not need to add lithium salt and be equipped with anhydrous and inert environment atmosphere, so that the production cost can be significantly reduced, and large-scale production is easy.

Abstract: The present disclosure discloses a compatible female socket and an intelligent concealed box. The compatible female socket includes a box body, an adjustment unit, and an interface unit; the adjustment unit is rotatably connected to one side, facing an opening of the box body, in the box body; one end of the interface unit facing the opening of the box body is configured to connect various external plugs, and the other end of the interface unit is connected to various wires; the interface unit is slidably connected to the box body; the interface unit is in threaded fit with the adjustment unit; and the adjustment unit is rotated to drive the interface unit to move. The present disclosure has a wide range of application scenes and has the advantages of no wiring and ease of mounting. Therefore, the socket is easy for marketing and has a good market value.

Abstract: Composites comprising metal-oxide-functionalized carbon nanotubes with metal nanoparticles deposited thereon are provided. These composites can be used as a working electrode in an electrochemical sensor to detect arsenite in aqueous solutions. The composite can electrochemically reduce As3+ to As0 due to increasing adsorption capability. In one embodiment, Au nanoparticles are deposited on the TiOx/CNT electrode to facilitate the adsorption of As3+ on the electrode surface for further electrochemical reduction process. Square wave voltammetry (SWV) is performed to detect the electrochemical reduction of arsenite in water.

Abstract: A sensing platform for continuous water resource monitoring by electrochemical detection and solution parameter correction is provided. The sensing platform employs a solid-state electrolyte three-electrode cell, creating a high ionic strength environment within the solid-state electrolyte membrane, which is in ion exchange equilibria with the sampled solution. This device may be used as a standalone sensor in environments where the water parameters (pH temperature, and ionic strength) are controlled, or in concert with compensation sensors where water parameters are not controlled.

Abstract: A carbon nanotube (CNT) ion-selective field effect transistor (IS-FET) integrated device is used to detect nitrate ion in water. The device is operated as an IS-FET sensor, holding the measured potential between the drain electrode and an external reference electrode constant with a potentiometric circuit. Transduction occurs by changes in the effective CNT film gate potential with changes in the phase boundary potential of an ion-selective membrane (ISM) film. Moreover, the nitrate ISM film makes the device highly selective towards nitrate sensing. This printable IS-FET nitrate sensor enables real-time and high-resolution measurements and recording of nitrate ion in water at low cost.

Abstract: Some embodiments of the disclosure provide a flatness detection device. In an embodiment, the flatness detection device includes a back plate, an electromagnet, a cross beam, a probe, and a limiting frame. The limiting frame and the electromagnet are provided side by side on the back plate. The cross beam is located above the limiting frame and the electromagnet. The probe vertically penetrates the cross beam and the limiting frame. A spring is provided between the cross beam and the electromagnet. The spring is movable in a vertical direction by a guide, the movement being at least one of compression and extension.

Abstract: The present disclosure relates to integrated circuits, and more particularly, to a sense amplifier circuit for current sensing in a memory structure and methods of manufacture and operation. In particular, the present disclosure relates to a circuit including: a sensing circuit including a first set of transistors, at least one data cell circuit, and a reference cell circuit; a reference voltage holding circuit comprising a second set of transistors and a bitline capacitor; and a comparator differential circuit which receives a data sensing voltage signal from the sensing circuit and a reference voltage level from the reference voltage holding circuit and outputs an output signal.

Abstract: Switching devices for a printing mode of a 3D printer are disclosed. In some embodiments, the switching devices includes: a component platform with at least two platform bodies (200); at least two handpiece guiding parts (110); at least two platform guiding parts (210); at least two handpiece transmission mechanisms (120); a handpiece drive mechanism configured to drive the handpiece transmission mechanisms (120) to move synchronously; at least two platform transmission mechanisms (220); and a platform drive mechanism configured to drive the platform transmission mechanisms (220) to move synchronously.

Abstract: A method for adjusting height of a 3d printer nozzle. In an embodiment, the method uses a fully wavy line as a reference line. The method includes the following steps. Determining an initial value of a height difference between the nozzle and a bottom of a probe by using a feeler gauge. Moving the nozzle vertically to adjust the height based on the initial value, obtaining a printing height of a first line, and printing the first line. Determining whether the first line is a fully wavy line. Adjusting the height of the nozzle for N times according to a preset step value, and printing N lines with corresponding heights. Determining whether the N lines have a fully wavy line. Calculating the height difference between the nozzle and the bottom of the probe by an equation. Adjusting the height of the nozzle.

Abstract: Extruder calibration methods and systems for a dual-extruder 3D printer are disclosed. In an embodiment, an extruder calibration method for a dual-extruder 3D printer having a left extruder and a right extruder includes the following steps: (1) building up a rectangular coordinate system on a heat bed of a 3D printer; (2) obtaining a first offset by calculating an offset between the left extruder and the right extruder in an X-axis direction; (3) obtaining a second offset by calculating an offset between the left extruder and the right extruder in a Y-axis direction; and (4) calibrating the left extruder and the right extruder according to the first offset and the second offset.

Abstract: Some embodiments of the disclosure provide a flatness detection device. In an embodiment, the flatness detection device includes a back plate, an electromagnet, a cross beam, a probe, and a limiting frame. The limiting frame and the electromagnet are provided side by side on the back plate. The cross beam is located above the limiting frame and the electromagnet. The probe vertically penetrates the cross beam and the limiting frame. A spring is provided between the cross beam and the electromagnet. The spring is movable in a vertical direction by a guide, the movement being at least one of compression and extension.