Abstract: Provided is a method for obtaining a double-stranded sequence by single-stranded rolling circle amplification, comprising: 1) performing rolling circle amplification reaction on single-stranded circular DNA by means of a first primer to obtain an amplified sequence, the first primer being complementary to a partial region of the single-stranded circular DNA, and the single-stranded circular DNA having a break mechanism that can cause the single-stranded circular DNA to ring-open; 2) ring-opening the single-stranded circular DNA by means of the break mechanism to obtain single-stranded linear DNA; and 3) using the single-stranded linear DNA as a second primer and using the amplified sequence obtained in step 1) as a template to perform amplification reaction to obtain an amplified double-stranded sequence.

Abstract: A method and an apparatus for controlling a shutoff device, and a shutoff device. The method is applied to a processor of the shutoff device. The method includes: determining whether a heartbeat signal is received continuously during a first preset period; if so, controlling the N main switching transistors to be turned on, and determining whether the heartbeat signal is not received continuously during a second preset period; and if so, controlling the N main switching transistors to be turned off, and controlling the release circuit to be turned on to release a voltage on the bus. A release circuit is controlled to release voltage on the bus to the ground, thereby rapidly reducing the voltage on the bus, avoiding person danger and safety accidents caused by the long-term presence of the direct current high voltage on the bus, and improving the safety and reliability of a photovoltaic system.

Abstract: A method for preparing a grid alloy of a lead battery, comprising the following steps: (1) preparing an aluminum-lanthanum-cerium rare earth mother alloy by using a molten salt electrolysis method; (2) melting the aluminum-lanthanum-cerium rare earth mother alloy with sodium and partial lead and uniformly stirring same to prepare an intermediate alloy; and (3) melting the intermediate alloy with calcium, tin and remaining lead and uniformly stirring same to form a grid alloy of a lead battery.

Abstract: The present disclosure generally pertains to systems and methods for processing radar signals from a sparse MIMO array. In some embodiments, the signals from a MIMO radar array are processed to generate a sparse virtual array. Then, by using a two-dimensional (2D) variant of missing-data iterative adaptive approach (missing-data IAA or MIAA) to process the virtual array, the system can estimate information from the missing antennas of the sparse virtual array. Then, by using the now full virtually array, the system can process the virtual array using a variant of multi-dimensional folding (MDF) to discover the existence and location (e.g., distance, elevation, and azimuth) of objects (also called scatterers) within the MIMO radar array's field of view.

Abstract: The present disclosure generally pertains to systems and methods for processing radar signals from a sparse MIMO array. In some embodiments, the signals from a MIMO radar array are processed to generate a sparse virtual array. Then, by using a two-dimensional (2D) variant of missing-data iterative adaptive approach (missing-data IAA or MIAA) to process the virtual array, the system can estimate information from the missing antennas of the sparse virtual array. Then, by using the now full virtually array, the system can process the virtual array using a variant of multi-dimensional folding (MDF) to discover the existence and location (e.g., distance, elevation, and azimuth) of objects (also called scatterers) within the MIMO radar array's field of view.

Abstract: The invention discloses a horizontal lead storage battery include a battery container and a cover; the interior of said battery container is installed with a partition that divides its inner cavity into a plurality of single cells, and each cell is installed with a plate group; the adjacent plate groups are connected by a bridge; said partition has a gap for the bridge to pass through, and a sealing component is installed at the gap; said sealing component comprises two sealing plates with a gap and sealed with said partition; said gap is filled with sealant. The gap of the partition of present invention is provided with two sealing plates, the gap between the two sealing plates is filled with sealant, and the tiny gap between the sealing plate and the partition is sealed by sealing, thereby improving the sealing effect.

Abstract: A lead-acid battery includes a container and an intermediate cover. The container comprises six pole groups in linear arrangement in a longitudinal direction. Two of the pole groups on a farthest edge are provided with pole posts penetrating through the intermediate cover. The intermediate cover is fixed with two connection terminals. Each of the connection terminals comprise a first connecting part connected to the pole post and a second connecting part connected to an external wire. The two connection terminals are provided on a side of the intermediate cover in a width direction of thereof, and the second connecting part is led out from a side surface of the intermediate cover. One of the connection terminals is directly connected to one of the pole posts, and the other one of the connection terminals is connected to another one of the pole posts via an adapted cable.

Abstract: A method for preparing a grid alloy of a lead battery, comprising the following steps: (1) preparing an aluminum-lanthanum-cerium rare earth mother alloy by using a molten salt electrolysis method; (2) melting the aluminum-lanthanum-cerium rare earth mother alloy with sodium and partial lead and uniformly stirring same to prepare an intermediate alloy; and (3) melting the intermediate alloy with calcium, tin and remaining lead and uniformly stirring same to form a grid alloy of a lead battery.

Abstract: An automatic identification system of mobile terminal equipment, which consists of the mobile terminal equipment, mobile network communication platform and mobile terminal equipment service center. The mobile terminal equipment is provided with subscriber information handling means for transmitting terminal subscribers information to mobile terminal service center through communication channels of the mobile network communication platform. The mobile terminal equipment service center compares the terminal subscriber information with that in its database and then identifies and processes said terminal subscribers information.

Abstract: The present invention involves a method for mobile terminal equipment service center to identify the mobile terminal equipment and it consists of mobile terminal equipment, mobile network communication platform and mobile terminal equipment service center. The mobile terminal equipment is loaded with an automatic terminal subscriber information transmission software package. The mobile terminal equipment mainly receives or transmits information, the mobile network communication platform is used as a network communication carrier, and the mobile terminal equipment service center is able to communicate with mobile terminal equipment, identify the terminal equipment and provide personalized value-added services and also act as the access platform for the mobile network operators and other value-added services.