Abstract: A method of forming a plurality of lipid bilayers over an array of cells in a nanopore based sequencing chip is disclosed. Each of the cells comprises a well. A salt buffer solution is flowed over the array of cells in the nanopore based sequencing chip to substantially fill the wells in the cells with the salt buffer solution. A lipid and solvent mixture is flowed over the array of cells to deposit the lipid and solvent mixture over at least some of the wells in the cells. A first portion of the cells, each having a lipid bilayer over its well, is detected. A second portion of the cells, each having a lipid membrane but not a lipid bilayer over its well, is detected. An electrical lipid-thinning stimulus is selectively applied to the second portion of the cells but not to the first portion of the cells.

Abstract: Methods and devices for controlling ammonia escape and soluble particulate matter formation in an ammonia-based carbon capture process are provided. After the process gas containing sulfur oxides and carbon dioxide may be treated by ammonia-based desulfurization and carbon capture, free ammonia contained in the tail gas may be removed by scrubbing the tail gas with sulfuric acid-containing solution and aqueous solution. The sulfuric acid reacts with ammonia to form ammonium sulfate, and the ammonium sulfate solution may be sent to an ammonia-based desulfurization system, where it may be crystallized together with the desulfurization byproduct ammonium sulfate to produce solid ammonium sulfate. By treating the ammonium sulfate solution in a membrane separation device, solution gradient control and system water balance may be achieved. The ammonia in the tail gas may be effectively removed, while the soluble particulate matter in the tail gas may be reduced.

Abstract: Some embodiments of the present disclosure provide a switching device for a fitness device, a fitness device and a control method thereof. The switching device may include a first rotating shaft, a second rotating shaft, and a switching member. The second rotating shaft may sleeve outside the first rotating shaft, and the first rotating shaft and the second rotating shaft may be detachably connected through a first connecting assembly of the switching device. The switching member may be configured to switch between a first state and a second state by driving the first rotating shaft to connect or separate from the second rotating shaft through a movement of the first connecting assembly.

Abstract: Some embodiments of the present disclosure provide fitness device, comprising an adjustable accessory and/or a detachable accessory. The adjustable accessory includes a stand column, an extension arm, a sliding assembly, a first assembly, and a second assembly. The sliding assembly is slidably disposed on the stand column. The first assembly is rotatably disposed on the sliding assembly. The second assembly is connected with the first assembly. The extension arm is rotatably connected with the second assembly. The detachable accessory is connected with the extension arm.

Abstract: The present disclosure relates to the field of microelectronics and solid-state electronics, and in particular to a calibration system and method for weighting errors brought about by parasitic capacitance in split capacitor-based successive approximation analog-to-digital converters. The method uses an MSB array that does not add additional capacitors, only a switch SM to reduce the comparator design difficulty. Meanwhile, an LSB array may add a calibration DAC array CA including a binary array of P-bit unit capacitors, a calibration structure Cfraq, and a ground switch Sk. The calibration structure Cfraq includes four unit capacitors and two switches S1 and S2. By controlling the switches S1 and S2 different capacitance values can be generated to reduce the chip area consumption. This structure can reduce the error to LSB/4 and the weighting error of the ADC, and increases the effective number of bits of the ADC without excessively increasing comparator gain.

Abstract: Disclosed is a method, device, and system for testing the static contact angle of reagent asphalt, the method includes the following steps: acquiring a side image of a stable droplet formed by a test reagent on asphalt surface, and determining the position of a baseline in the side image; cropping the side image to obtain a droplet image, and extracting droplet contour points in the droplet image; screening out effective contour points corresponding to contours of the two sides of the droplet from the droplet contour points; performing cubic polynomial fitting on the effective contour points to obtain curve function of contour curves on both sides; calculating contact angle value from the curve function and the position of the baseline. The beneficial effects of this disclosure are: this disclosure reduces the difficulty of fitting of the droplet contour and thus improves the calculation precision of the contact angle.

Abstract: A method of forming a plurality of lipid bilayers over an array of cells in a nanopore based sequencing chip is disclosed. Each of the cells comprises a well. A salt buffer solution is flowed over the array of cells in the nanopore based sequencing chip to substantially fill the wells in the cells with the salt buffer solution. A lipid and solvent mixture is flowed over the array of cells to deposit the lipid and solvent mixture over at least some of the wells in the cells. A first portion of the cells, each having a lipid bilayer over its well, is detected. A second portion of the cells, each having a lipid membrane but not a lipid bilayer over its well, is detected. An electrical lipid-thinning stimulus is selectively applied to the second portion of the cells but not to the first portion of the cells.

Abstract: A dual-mode sensor structure applied to the detection of breast cancer cells in blood samples is disclosed, along with a method of using the dual-mode sensor to detect magnetic particles coupled with antibodies in blood. The sensor generates a magnetic field by electrification of a wire or coil to attract the magnetic particles to the surface of the sensor. The sensor includes a small-sized TMR sensor and Hall sensor array equivalent in size to magnetic particles, ensuring that the sensor can generate a significant output voltage when particles are present. A baffle in the TMR sensor can fix the particles, separating each particle to prevent particle concentration or multiple particles from accumulating along the depth of the sensor without being accurately detected. This improves the linearity and accuracy of the sensor output voltage and detection of the number of magnetic particles. The sensor can detect the number of magnetic particles quickly.

Abstract: A Flexible Job Shop scheduling method includes: obtaining a shop scheduling state including at least one of a sequential order dependency relationship between job tasks being processed, a sequential order dependency relationship between operation steps in each job task of the job tasks, a processing/being processed relationship between the job tasks and machines, or mutual constraint relationships between the machines; representing the shop scheduling state as a state hypergraph; extracting a hypergraph-based job feature from the state hypergraph using a hypergraph neural network; and determining an action configured to change the shop scheduling state, wherein the action is determined according to the hypergraph-based job feature using a policy network.

Abstract: An electrical connector includes: a longitudinal insulating housing having a base portion and a tongue portion extending forwardly from the base portion; a row of first terminals and a row of second terminals located at two opposite sides of the tongue portion respectively, each row of the first terminals and the second terminals including plural signal terminals and plural grounding terminals; and a grounding member located between the row of first terminals and the row of second terminals, wherein the grounding member comprises a main portion and plural first contacting portions protruding from the main portion and contacting with corresponding grounding terminals of the first terminals, and the grounding member is embedded in the insulating housing by injection molding.

Abstract: Disclosed is a three-axis Hall angle sensor with an accuracy of 0.3°. The sensor is mainly designed by means of finite element software and COMSOL Multiphysics. The present specification will be mainly performed in three steps. In the first step, a cross-shape horizontal Hall element for measuring the magnetic field in the vertical direction, that is, the direction z, is studied. The second section mainly studies a three-contact four-Hall vertical element for measuring the magnetic field in the directions x, y. The third part is to design the angle sensor. Compared with the horizontal Hall element, the vertical Hall element has a relatively large offset, therefore, four vertical Hall elements are used to measure the magnetic field in the horizontal direction, and two complementary vertical structures are used to eliminate the error when the magnetic field in the same horizontal direction is measured.

Abstract: The present disclosure provides an application software (APP) testing method, an electronic device, and a computer-readable storage medium. The APP testing method includes: acquiring a key log; determining information related to a tested fault cause according to the key log; acquiring a User Interface (UI) screenshot; and comparing the UI screenshot with a pre-stored UI design drawing, and determining whether there is a difference between the UI screenshot and the UI design drawing. The APP testing method provided by the present disclosure can realize quick check of network access logs and crash logs even without a platform of a development tool, assist testers and developers in problem reproduction and fault location, and improve development efficiency of the developers.

Abstract: An electrical connector includes: a longitudinal inner insulator and two rows of terminals retained in the inner insulator along a longitudinal direction with two ends of each terminal extending out of the inner insulator; and an insulator frame receiving the inner insulator and having a longitudinal mating slot and plural terminal grooves distributed at two sides of the mating slot, the terminals being received in corresponding terminal grooves and each having a contacting portion bent into the mating slot, wherein the inner insulator has a through-slot, the through-slot penetrates the inner insulator along the longitudinal direction and is located between the two rows of terminals.

Abstract: A process for producing an ether including treating (a) an ester with (b) hydrogen in the presence of (c) a heterogeneous catalyst to reduce the ester by hydrogenation to form an ether product, wherein the heterogeneous catalyst comprises a transition metal deposited on a sulfonic acid functionalized SiO2 support.

Abstract: A process for producing an ether including treating (a) an ester with (b) hydrogen in the presence of (c) a heterogeneous catalyst to reduce the ester by hydrogenation to form an ether product, wherein the heterogeneous catalyst comprises a transition metal deposited on a zeolite support.

Abstract: A method of detecting a lipid bilayer formed in a cell of a nanopore based sequencing chip is disclosed. An integrating capacitor is coupled with a lipid membrane, wherein the lipid membrane is between a working electrode and a counter electrode. An alternating current (AC) voltage is applied to the counter electrode. A voltage across the integrating capacitor is periodically sampled by an analog-to-digital converter (ADC). A change in the sampled voltage across the integrating capacitor in response to a change in the AC voltage is determined. Whether the lipid membrane comprises a lipid bilayer is detected based on the determined change in the sampled voltage across the integrating capacitor in response to the change in the AC voltage.

Abstract: Disclosed is a method for measuring surface energy of aggregates based on static drop method, comprising (1) aggregates grinding and pretreatment; (2) obtaining the surface texture index; (3) calculating the surface energy based on static drop method experiment; (4) fitting to obtain a functional relationship between the surface texture index and surface energy; (5) calculating the surface energy of the original aggregate. The method considers the influence of the grinding process on the surface texture of the aggregates when measuring the surface energy of the aggregates, which significantly improves the accuracy of the static drop method test. The static drop method can be used to replace the vapor adsorption method to test the surface energy of aggregate, and the low-cost optical contact angle instrument can replace the expensive magnetic suspension weight balance system to test the surface energy of aggregate, which greatly reduces the test cost.

Abstract: A method of detecting a lipid bilayer formed in a cell of a nanopore based sequencing chip is disclosed. An integrating capacitor is coupled with a lipid membrane, wherein the lipid membrane is between a working electrode and a counter electrode. An alternating current (AC) voltage is applied to the counter electrode. A voltage across the integrating capacitor is periodically sampled by an analog-to-digital converter (ADC). A change in the sampled voltage across the integrating capacitor in response to a change in the AC voltage is determined. Whether the lipid membrane comprises a lipid bilayer is detected based on the determined change in the sampled voltage across the integrating capacitor in response to the change in the AC voltage.

Abstract: A method of forming a plurality of lipid bilayers over an array of cells in a nanopore based sequencing chip is disclosed. Each of the cells comprises a well. A salt buffer solution is flowed over the array of cells in the nanopore based sequencing chip to substantially fill the wells in the cells with the salt buffer solution. A lipid and solvent mixture is flowed over the array of cells to deposit the lipid and solvent mixture over at least some of the wells in the cells. A first portion of the cells, each having a lipid bilayer over its well, is detected. A second portion of the cells, each having a lipid membrane but not a lipid bilayer over its well, is detected. An electrical lipid-thinning stimulus is selectively applied to the second portion of the cells but not to the first portion of the cells.

Abstract: Staged absorption ammonia-based decarbonization using an absorption circulating liquid containing ammonium salts to remove carbon dioxide in a gas, and control ammonia escape while realizing efficient decarbonization through staged solution composition control and reaction condition control. Staged solution composition control may include concentration gradient control of ammonium carbonate, ammonium bicarbonate, ammonium carbamate, ammonia, or combinations thereof, which may be characterized by the molar ratio of total ammonia to total CO2. Reaction condition control may include temperature control, pH control, and pressure control. The flue gas may enter the decarbonization tower, and through staged absorption, establishment of concentration, temperature, and multi-point addition of ammonia, decarbonization efficiency may be improved, decarbonization operating costs may be saved, and ammonia escape may be controlled.