Abstract: An ultrasound imaging method includes: transmitting ultrasound waves to a target tissue at least three different transmission angles, where the ultrasound waves at least two transmission angles have different transmitting frequencies, and the ultrasound waves at least two transmission angles have the same transmitting frequency; for an ultrasound echo signal corresponding to each transmission angle, performing beamforming at least two different receiving angles; performing at least one coherent compounding and at least one non-coherent compounding on beamformed data to obtain compounded data, where each coherent compounding includes performing coherent compounding on beamformed data corresponding to the same receiving angle, the same transmitting frequency, and different transmission angles; and the non-coherent compounding includes performing non-coherent compounding on at least one set of coherently compounded data and beamformed data not subjected to the coherent compounding; and generating an ultrasound i

Abstract: An ultrasound imaging method includes: transmitting ultrasound waves to a target tissue at at least two different transmission angles; obtaining an ultrasound echo signal corresponding to each transmission angle; for the ultrasound echo signal corresponding to each transmission angle, performing beamforming at at least two different receiving angles to obtain beamformed data; based on each transmission angle and the receiving angles corresponding to the beamformed data, performing at least one coherent compounding and at least one non-coherent compounding on the beamformed data to obtain compounded data, where each coherent compounding includes performing coherent compounding on beamformed data corresponding to a same receiving angle and different transmission angles to obtain a set of coherently compounded data corresponding to the same receiving angle, and each non-coherent compounding includes performing non-coherent compounding on at least two sets of coherently compounded data; and generating an ultrasou

Abstract: A low-heat-loss operation method of a line-focusing heat collection system and the line-focusing heat collection system are provided. The method includes the following steps. Solar energy is utilized to preheat a collector tube in an empty tube state, so that the collector tube is in a preheating mode. After a set preheating temperature is reached, a heat transfer working medium is injected into the collector tube. In the injection process of the heat transfer working medium, an injection section of the collector tube is converted into a focusing mode from a preheating mode. After heat collection is finished, the circulation of the heat transfer working medium is stopped, and the focusing mode of the collector tube is kept. In the drainage process of the heat transfer working medium, an emptying section of the collector tube is converted into a light heat-tracing mode from a focusing mode.

Abstract: An ultrasound imaging method includes: transmitting a first ultrasound wave to a target tissue via an ultrasound probe; receiving, via the ultrasound probe, echo of the first ultrasound wave that is reflected by the target tissue to obtain an echo channel signal, where the echo channel signal includes a plurality of channel data corresponding to a plurality of receiving array elements of the ultrasound probe; determining a target transformation matrix from a transformation matrix set according to a transmission parameter of the first ultrasound wave and/or a type of the ultrasound probe; transforming the plurality of channel data according to the target transformation matrix to obtain synthetic radio frequency data; performing image processing on the synthetic radio frequency data to obtain image data of the target tissue; and obtaining an image of the target tissue according to the image data, and displaying the image of the target tissue.

Abstract: A display substrate, a manufacturing method thereof, and a display device are provided. The display substrate includes a base substrate, organic light-emitting elements, a data line, and an electrode line. The organic light-emitting element includes a first electrode, a light-emitting layer and a second electrode sequentially stacked; the data line is located between the base substrate and the organic light-emitting element; the electrode line is on the same layer as the data line and located in a region outside a light-emitting region of the organic light-emitting element. The display substrate further includes at least one connection portion, which is in the region outside the light-emitting region and is configured to connect the electrode line and the first electrode, the connection portion is spaced apart from the second electrode, and the light-emitting layer covers the second electrode and the at least one connection portion.

Abstract: An array substrate includes gate lines, data lines and an insulating layer. The data lines all extend in a first direction, and the gate lines all extend in a second direction, the first direction intersecting the second direction. A data line includes first line segments and second line segments that all extend in the first direction and are arranged alternately. The second line segments are disposed at a side of the gate lines proximate to the base, and the first line segments are disposed at a side of the gate lines away from the base. There is no overlap among orthographic projections of the first line segments on the base and orthographic projections of the gate lines on the base. The insulating layer includes first vias. In the first direction, any two adjacent first line segments are electrically connected to a second fine segment through at least two first vias.