Abstract: The present disclosure relates to a method and apparatus for determining a signal margin (SM) of a memory cell, a storage medium and an electronic device, and relates to the technical field of integrated circuits. The method for determining an SM of a memory cell includes: when the memory cell performs write and read operations, determining a sense signal threshold of the memory cell under an influence of a noise; and determining, based on the sense signal threshold, an actual SM of the memory cell during data reading.

Abstract: Embodiments of this application relate to the terminal field and disclose a data transmission method and a terminal, to increase a speed of data transmission between terminals and ensure stability during the data transmission. The method includes: A terminal establishes a wireless connection to another terminal; in addition, the terminal establishes a USB connection to the another terminal; then, the terminal can display a first interface, where the first interface includes at least one piece of candidate data; a user may select to-be-transmitted data from the at least one piece of candidate data after performing a first input on the first interface; and the terminal may send the to-be-transmitted data to the another terminal through the wireless connection and the USB connection after the user performs a second input on the first interface.

Abstract: A method for detecting a thickness of bonded rubber of a carbon black in a natural rubber based for reinforcement performance is provided. An ultra-thin frozen microtome to prepare a sample, a tapping mode of the atomic force microscope is used, and when characterizes the carbon black and rubber composite material, the difference of imaging characteristics between morphological and phase diagrams is used, the characteristics of bonded rubber of carbon black reinforced composite material can be observed to obtain the thickness of bonded rubber, and then influence of bonded rubber on rubber performance and the reinforcement performance of the carbon black in the rubber are analyzed. The method has advantages of simple operation, no need for excessive sample processing, high detection efficiency, clear detection images and high detection accuracy, thereby having better applicability and providing a new method and idea for studying reinforcements of fillers.

Abstract: The shock tube comprises a tube, a first electrode, a second electrode and a stopple, wherein the tube is internally provided with a cavity for accommodating a target liquid sample. The first electrode is arranged at one end of the tube. The second electrode is arranged in the stopple, and the outer end of the second electrode can be electrically connected with the exterior via an opening of the stopple. The stopple is internally provided with an elastic piece connected with the second electrode. The outer side of the elastic piece is connected with the stopple, and the inner side of the elastic piece is connected with the second electrode. The invention further provides a cell electroporation device where the shock tube can be placed.

Abstract: Semiconductor structure and method of forming semiconductor structure are provided. The semiconductor structure includes a substrate, a first isolation structure, and a first nanostructure and a second nanostructure on two sides of the first isolation structure. The semiconductor structure also includes a second isolation structure, and a third nanostructure and a fourth nanostructure on two sides of the second isolation structure. A top of the second isolation structure is lower than a top of the first isolation structure. The semiconductor structure also includes a first gate structure and a second gate structure. The first gate structure and the second gate structure expose a top surface of the first isolation structure. The semiconductor structure also includes a third gate structure and a fourth gate structure. The third gate structure and the fourth gate structure are in contact with each other on a top surface of the second isolation structure.

Abstract: An apparatus for electroporation of biological cells is provided. The apparatus includes a sample container having an insulator chamber for holding the cells. The sample container has a first electrode and a second electrode to provide electrical connection for electroporation. The insulator chamber is configured to contain at least one cell monolayer. The apparatus also includes a pulse generator that can generate a predetermined pulse for electroporation of the cells.

Abstract: Disclosed are a system and a method for capturing a space target. The system includes a plurality of capturing devices, a delivery device, a launching device, and a deceleration and recovery device, each of the plurality of capturing devices is configured to be launched into a target orbit to capture a defunct space target, the delivery device is configured to deliver, along a preset delivery trajectory, each of the plurality of capturing devices to a first preset location in the launching device, the launching device is configured to launch each of the plurality of capturing devices located at the first preset location into the target orbit to capture the defunct space target, and the deceleration and recovery device is configured to decelerate each of the plurality of capturing devices after it is launched and flies a preset distance.

Abstract: A Power over Ethernet (PoE) power supply device, a PoE power supply system, an interface part, and a method for detecting an optical module, and pertaining to the field of communications technologies, where the PoE power supply device includes a photoelectric composite interface part, and wherein the photoelectric composite interface part integrates an optical interface and an electrical interface, and is configured to be coupled to a photoelectric composite module. The photoelectric composite interface part can complete PoE power supply while transmitting a signal.

Abstract: A Ziegler-Natta catalyzed ethylene/alpha-olefins copolymer is provided having sporadic long chain branches and reversed comonomer composition distribution or short chain branching distribution (SCBD) in the high molecular weight fractions. According to the invention, polyethylene film made with the inventive copolymer has a balance of improved physical, optical, mechanical properties as well as processability. In one aspect, the film includes a 1% secant modulus of greater than 25,000 psi, a film haze of less than 10, a film clarity of greater than 90, a dart impart resistance of greater than 500 g/mil, and a MD tear strength of greater than 500 g/mil.

Abstract: The present invention provides phthalate free impact resistant polypropylene copolymer and methods of preparation, which are produced directly from the polymerization reactor system without further compounding of components which significantly alters the physical properties of the resulting polymer. The copolymer according to the present invention possesses both low temperature ductility and high flexural modulus, wherein said polymer is produced in the presence of a phthalate free ZN catalyst comprising urea component.

Abstract: The present disclosure discloses a portable bathtub. The portable bathtub includes a bathtub main body, at least one locking member and a supporting member. The bathtub main body includes a framework and an accommodating portion formed by downwards extension of the framework. The supporting member is configured to detachably connect the bathtub main body through the at least one locking member.

Abstract: Disclosed herein are compositions for attracting fire ants wherein the compositions contain at least one fire ant food source, and at least one of 10-oxo-dodecanoic acid, 11-oxo-dodecanoic acid, or a mixture thereof, and optionally a carrier. Disclosed are also methods for attracting fire ants, the methods involving treating an object or area with a fire ant-attracting effective amount of a composition of the invention.

Abstract: Systems and methods for obtaining an external content item from an online service for presentation on the client device is presented. On the client device, a condition is detected in the execution context of an executing application, the condition corresponding to the presentation of an external content item by the application. A request is made to the online service for content items. In response, content information is received, where the content information identifies potential content items. According to various embodiments, initial scores are associated with each potential content item in the content information. At the client device, a completed score is generated for each content item according to local information on the client device and the corresponding initial score. An external content item is selected for presentation on the client device from the potential content items according to, at least in part, the completed scores.

Abstract: A non-invasive time domain reflection probe calibration method includes: using different volume ratio of ethanol and deionized water mixed solution to calculate a test target's medium weight coefficient and waveguide length of the non-invasive time domain reflection probes; using different concentrations of NaCl solutions to calibrate a waveguide geometric dimensioning of the non-invasive time domain reflection probes; preparing compacted soil samples with known different moisture contents and densities, and calibrating a correlation parameter of compacted soil samples' dielectric constant and conductivity with moisture content and density. The method not only determines the sensitivity of the test target medium of the non-invasive time domain reflection probes, but also obtains the waveguide length and geometric dimensioning of the probe, and realizes an accurate test of moisture content and density of the soil.

Abstract: The present invention provides a bacterial continuous evolution system, an orthogonal error-prone DNA polymerase, and a continuous evolution method. In the present invention, by combining an orthogonal DNA replication system and an orthogonal error-prone DNA polymerase, a continuous evolution method that includes all mutant types, enables long-DNA-fragment mutation, and is good in continuity and simple and convenient to operate is obtained. By inducing the opening and closing of DNA polymerase expression, switching between a linear plasmid error-prone mutation process and a high-fidelity replication process is realized, so as to achieve the efficient and continuous evolution of a target DNA sequence.

Abstract: A detection circuit including a temperature voltage generator circuit and an output circuit. The temperature voltage generator circuit generates a detection voltage corresponding to a temperature of the detection circuit based on a predetermined constant current, when a pulse signal received by the detection circuit is at a first level, and stop generating the detection voltage when the pulse signal is at a second level. The output circuit outputs a detection signal indicating whether the temperature is higher than a predetermined temperature based on the detection voltage, during a period of time between a first time that is a predetermined time period after the pulse signal reaches the first level and a second time at which the pulse signal switches from the first level to the second level, the pulse signal remaining in the first level in the period of time.

Abstract: A data processing method, a server, and a data collection device are provided. The method includes: obtaining, by a server, first network key performance indicator KPI data and performance data of a first set-top box STB, where the first network KPI data is network KPI data of a first video service stream, and the first STB is an STB that receives the first video service stream; and calculating, by the server, first video quality of experience QoE of the first video service stream based on an associated model, the first network KPI data, and the performance data of the first STB, where the associated model is a model obtained through training based on historical data, and the associated model is used by the server to calculate video QoE based on network KPI data and performance data of an STB.

Abstract: This application relates to the field of power tool technologies, and specifically discloses a power tool and a control method thereof. The tool includes at least two output heads. An output head detection assembly can detect a position of an output head at a working position and generate a detection signal. The detection signal is associated with a working mode of the output head. A function switching unit generates, in response to external triggering, a mode switching signal used for indicating to switch the working mode of the output head at the working position. A controller is connected to the output head detection assembly and the function switching unit, switches the working mode of the output head at the working position in response to the mode switching signal, and associates the detection signal with a working mode after switching.