Abstract: A fatigue-resistant load-bearing steel for a wind turbine main shaft, and a manufacturing method and a use thereof are provided. The manufacturing method includes: step S1, smelting: smelting a raw steel into a molten iron, followed by impurity removal and deoxidation, and adjusting contents of respective components to obtain a casting molten steel; step S2, continuous casting: crystallizing the casting molten steel with an electric pulse, followed by solidification to obtain a continuous casting billet; step S3, rolling: subjecting the continuous casting billet to rough rolling and finish rolling sequentially to obtain a finish-rolled billet; and step S4, post-rolling treatment: slowly cooling and then air-cooling the finish-rolled billet to obtain the fatigue-resistant load-bearing steel.

Abstract: Disclosed herein are a modified lysine-based polymer obtained from a process including Michael addition of at least a portion of free amino groups in a lysine-based polymer with a Michael acceptor selected from the group consisting of at least one of unsaturated carboxylic acids and unsaturated carboxylic acid esters, and a detergent composition including the same. Further disclosed herein are a method of preserving an aqueous detergent composition including the modified lysine-based polymer, and a method of laundering fabric or cleaning hard surfaces using the detergent composition including the modified lysine-based polymer.

Abstract: An integrated structure of an ultrafast response hydrogen sensor includes: a gas path chamber; a gas extractor fixed to a gas inlet of the gas path chamber; and a first hydrogen sensor and a second hydrogen sensor provided inside the gas path chamber; wherein the gas extractor is located in an identical straight line with the first hydrogen sensor and the second hydrogen sensor; the first hydrogen sensor and the second hydrogen sensor each have an Port A and a Port B, and DC voltage is applied to the Port A of the first hydrogen sensor and the Port B of the second hydrogen sensor, and the Port B of the first hydrogen sensor is connected to the Port A of the second hydrogen sensor to form a shared port, and the shared port serves as a voltage output port.

Abstract: An integrated plugging and perforating operation system is provided, including an operation truck, a wellhead equipment pry, and a centralized control room. A mechanical mechanism and a power mechanism are arranged on a chassis of the operation truck. The mechanical mechanism includes a turntable assembly, where a telescopic arm assembly is installed on the turntable assembly, a mechanical arm assembly for logging operation is installed at an operating end of the telescopic arm assembly, and a logging winch assembly and a follow-up winch assembly are arranged at a counterweight end of the telescopic arm assembly to form a counter weight of the telescopic arm assembly. The power mechanism is configured for providing power output to the mechanical mechanism.

Abstract: Disclosed are a photovoltaic shutdown circuit and a photovoltaic system. The photovoltaic shutdown circuit comprises a shutdown power line, a signal receiving module, a signal processing module, and a controllable switch module. The signal processing module comprises a signal modulation unit and a threshold comparison unit. A switch end of the controllable switch module is connected in series to the shutdown power line. The signal receiving module is connected to the shutdown power line for receiving a first signal with a controlling signal; the signal modulation unit is for reverting the controlling signal; the threshold comparison unit is connected to the signal modulation unit to receive the reverted controlling signal and compare the reverted controlling signal with a set threshold to output a driving signal. The controllable switch module is connected to the threshold comparison unit to receive the driving signal and control an on/off of the controllable switch module.

Abstract: The present invention relates to a personal washing composition comprising a detersive surfactant, at least one rheology modifying polymer, at least one cationic conditioning polymer, at least one benefit agent, and an anionic polymer of polysulfonic acid. The composition is a sulfate-free or substantial sulfate-free personal washing composition. The present invention further relates to a method of achieving improved conditioning benefits and/or improved deposition of benefit agents onto hair and/or skin.

Abstract: The present disclosure provides an oil injected air compressor and a method for controlling the same, a storage medium, and an electronic device. The oil injected air compressor includes a compressor assembly, an oil separator tank, an oil cooler assembly, an after cooler assembly, and a controller. The oil cooler assembly is connected to the compressor assembly and the oil separator tank, and is configured to cool the oil. The after cooler assembly is connected to the oil separator tank, and is configured to cool compressed air separated from the oil separator tank. The controller is configued to control, based on a state switching signal, the oil cooler assembly to operate in an energy-saving state, and the after cooler assembly to operate in a shutdown state or in a minimum speed state.

Abstract: An ion gradient power-generation stretching strain sensor and its preparation method, which relates to the technical field of flexible strain sensor and flexible wearable electronic technology, includes: latex pipes, an elastic line covered with a first hygroscopic sensitive material, two electrodes, and filter paper covered with a second hygroscopic sensitive material; wherein at both ends of the pipe, the filter paper is fixed inside and the corresponding electrodes of the elastic line at one end; the moisture absorption performance of the second hygroscopic sensitive material is better than the first hygroscopic sensitive material. The present invention realizes self-power supply of the sensor based on the ion gradient, does not require external power supply, and uses the elasticity line of the first hygroscopic sensitive material to achieve the strain detection, without consuming the material of the sensor itself and thus enhances life of the sensor.

Abstract: A method of reconstructing transcranial images using a dual-mode ultrasonic phased array includes steps of: controlling channels to emit energy toward an intracranial target point of a patient; respectively generating backscattered radiofrequency (RF) data by using the channels to receive backscattered energy reflected from the intracranial target; and reconstructing an acoustic distribution image based on those backscattered RF data in real-time. Compared with Pre-Treatment Ray Tracing Method, the present invention can display intracranial pressure distribution in real-time; compared with MR Thermometry, the present invention can be applied to low-energy applications without temperature change; and compared with Passive Cavitation Imaging, the present invention can stably present acoustic distribution images without relying on microbubbles.

Abstract: Disclosed are a photovoltaic shutdown circuit and a photovoltaic system. The photovoltaic shutdown circuit comprises a shutdown power line, a signal receiving module, a signal processing module, and a controllable switch module. The signal processing module comprises a signal modulation unit and a threshold comparison unit. A switch end of the controllable switch module is connected in series to the shutdown power line. The signal receiving module is connected to the shutdown power line for receiving a first signal with a controlling signal; the signal modulation unit is for reverting the controlling signal; the threshold comparison unit is connected to the signal modulation unit to receive the reverted controlling signal and compare the reverted controlling signal with a set threshold to output a driving signal. The controllable switch module is connected to the threshold comparison unit to receive the driving signal and control an on/off of the controllable switch module.

Abstract: A calibration concentration selection method includes steps of: using a gas sensor array to obtain a concentration variation sequence and a response variation sequence of the gas mixture; constructing and training an AE-BP model; constructing VAE and identically distributing the response variation sequence; inputting the identically distributed response variation sequence into the trained AE-BP model to output a predicted concentration variation sequence; and then normalizing the predicted concentration variation sequence to generate a target concentration variation sequence; sorting a target concentration variation sequence and calculating a response gradient sequence; processing the response gradient sequence for obtaining a corresponding smoothed gradient sequence; if the spike is greater than a preset hyperparameter, finding a large gradient concentration interval; and selecting concentration test points by random uniform sampling according to weights; and selecting concentration test points from all othe

Abstract: A method for discovering an unexploded ordnance in a target area includes: acquiring first feedback signals respectively corresponding to detection regions, the first feedback signals being first induced electromotive force signals; judging whether there is any abnormal signal in the first feedback signals, if there is the abnormal signal, determining the detection region corresponding to the abnormal signal is an abnormal region; acquiring second feedback signals respectively corresponding to detection sites in the abnormal region, the second feedback signals being magnetic field gradient signals; acquiring third feedback signals respectively corresponding to the detection sites, the third feedback signals being second induced electromotive force signals; acquiring location information of the detection sites; obtaining a feature spatial distribution map of the abnormal region; and judging whether there is any unexploded ordnance in the abnormal region according to the feature spatial distribution map.

Abstract: A detection method for discovering an unexploded ordnance includes: surrounding a detection region with a transmitting coil and surrounding a detection site with a second receiving coil; conducting the transmitting coil with a second electric current; respectively acquiring a plurality of second feedback signals at a plurality of second feedback time points; partitioning the transmitting coil into a plurality of dipoles, and acquiring a plurality of distance values r respectively between the plurality of dipoles and the detection site; respectively calculating feedback depths according to feedback time periods; respectively calculating apparent resistivity values corresponding to the feedback depths; obtaining an apparent resistivity distribution in depth at the detection site according to the apparent resistivity values and the feedback depths; and judging whether there is any unexploded ordnance at the detection site according to the apparent resistivity distribution in depth.

Abstract: A magnetism detection apparatus includes a detection device, at least one first locating device, and a central control device. The detection device includes an array of detection assemblies arranged in a same plane. The array of detection assemblies is configured to detect magnetic fields and output magnetic field signals corresponding to locations of the detection assemblies. The at least one first locating device is disposed on one of the detection assemblies to locate this detection assembly and output a first coordinate signal corresponding to this detection assembly. The central control device is communicatively and respectively connected to each of the detection assemblies and the at least one first locating device, and configured to process the magnetic field signals and the first coordinate signal.

Abstract: A breathing-driven flexible respiratory sensor includes: a test cavity and a digital electrometer, wherein an upper internal wall of the test cavity is provided with an upper detecting component, and a lower internal wall of the test cavity is provided with a lower detecting component; the upper detecting component and the lower detecting component is arranged in a longitudinal symmetry form; wherein the upper detecting component comprises a substrate, an electrode and a gas sensitive film bonded in sequence from top to bottom, and the substrate is bonded to the upper internal wall of the test cavity; wherein a rubber airbag is disposed in the test cavity, and a friction film is bonded to the rubber airbag; an air inlet cylinder is connected to a left end of the rubber airbag, and an air outlet cylinder is connected to a right end of the rubber airbag.

Abstract: A multi-gas sensor to detect food spoilage and a method of forming the same are disclosed. The multi-gas sensor includes a silicon substrate and a plurality of chemical sensitive field effect transistor (CSFET) sensors formed on a surface of the silicon substrate, wherein each one of the plurality of CSFET sensors are decorated with a different material to detect a different gas associated with food spoilage.

Abstract: An amphibious portable magnetism detector includes a first housing, a first wiring tube, a first magnetic field sensor, and a central control device. The first housing defines a first inner space and a first through hole in communication with the first inner space. The first wiring tube is connected to the first housing with a first leak-tight seal formed between them, and in communication with the first inner space via the first through hole. The first magnetic field sensor is disposed in the first inner space and configured to detect a magnetic field at a target area and generate a first detection signal. The central control device is electrically connected to the first magnetic field sensor and configured to receive the first detection signal and output a first magnetic field value according to the first detection signal.

Abstract: The present invention relates to a personal washing composition comprising a detersive surfactant, at least one rheology modifying polymer, at least one cationic conditioning polymer, at least one benefit agent, and an anionic polymer of polysulfonic acid. The composition is a sulfate-free or substantial sulfate-free personal washing composition. The present invention further relates to a method of achieving improved conditioning benefits and/or improved deposition of benefit agents onto hair and/or skin.

Abstract: A three-dimensional folding self-driving flexible respiration monitoring sensor and the preparing method thereof is disclosed. In the present invention a first friction unit and a second friction unit are set on a bottom of the box, which comprise a substrate, a conductive electrode layer and a friction layer respectively; the second friction unit is fixed on the bottom of the box; a friction layer of the first friction unit faces a friction layer of the second friction unit; a back plate is set on a substrate of the first friction unit; a balloon is between the box and the back plate; an inlet tube connects the balloon and the box, which is on a side wall of the box; the conductive electrode layer of the first friction layer and the second friction layer are connected to the electrometer respectively. Micro-energy of the respiration is adopted to monitor the breathing.