Abstract: The present disclosure relates to the technical field of filters, in particular to a foldable filter element, including a foldable filter assembly, a bottom setting end cover that is covered at a bottom end of the foldable filter assembly, a top setting end cover that is covered at an upper end of the foldable filter assembly, first sealing cotton arranged between the bottom setting end cover and the foldable filter assembly, and second sealing cotton arranged between the top setting end cover and the foldable filter assembly. The present disclosure has the characteristics of rational structure setting and effectively reducing the structure complexity and reducing the production cost. In addition, the present disclosure further provides a filter with the foldable filter element.

Abstract: The present disclosure provides a method and an apparatus for identifying a falling object based on a LiDAR system. The method includes obtaining a point cloud data set of a LiDAR system; identifying a dynamic point cloud cluster set based on the point cloud data at a first moment and a second moment, where the dynamic point cloud cluster set includes at least one dynamic point cloud cluster; and enabling a tracking and determination process in response to identifying the dynamic point cloud cluster set where, for each dynamic point cloud cluster, a data set of a dynamic point cloud cluster at each current moment following the second moment is updated in real time, and it is determined that an object represented by the dynamic point cloud cluster is a falling object in response to determining that the data meets a law of free fall.

Abstract: The present invention provides a method of site-directed insertion to H11 locus in pigs by using site-directed cutting system, includes the following steps: 1) identify the targeted sequence targeted by the targeted cutting system in the targeted genome sequence of pigs; 2) design and construct the targeting sequence of the corresponding cutting system according to the targeted site; 3) construction of targeting vector; 4) transfect cells, identify the efficiency of fixed-point insertion by PCR amplification. The invention is dependent on the site-directed cutting system of H11 locus in pigs, to insert the target gene into the target site, in order to solve the problems such as low efficiency of traditional shooting technique, inconvenience design of PCR detection primer, harder to detect. The invention provides a method of site-directed insertion which can stably express the foreign gene at the H11 locus, to build an efficient platform for the production of transgenic pigs.