Abstract: The present invention discloses a centroid adjustment device suitable for different types of loads, which belongs to the field of transportation and support technology, including an upper adjustment assembly, a connecting module, and a loading device. The connecting module includes connecting pieces and chain connection assemblies adjustable in length, both upper ends of the connecting pieces and the chain connection assemblies are respectively mounted on opposite sides of the centroid of the upper adjustment assembly and can be adjusted to move toward or away from each other at an upper end of the upper adjustment assembly, and both lower ends of the connecting pieces and the chain connection assemblies are respectively mounted on opposite sides of the centroid of the loading device.

Abstract: The present invention relates to the field of fluid heat transfer, and discloses a heat transfer enhancement pipe as well as a cracking furnace and an atmospheric and vacuum heating furnace including the same. The heat transfer enhancement pipe (1) includes a pipe body (10) of tubular shape having an inlet (100) for entering of a fluid and an outlet (101) for said fluid to flow out; internal wall of the pipe body (10) is provided with a fin (11) protruding towards interior of the pipe body (10), the fin (11) spirally extends in an axial direction of the pipe body (10), wherein a height of the fin (11) gradually increases from one end in at least a part extension of the fin. The heat transfer enhancement pipe can reduce thermal stress of itself, thereby increasing service life of the heat transfer enhancement pipe.

Abstract: A folding scooter, including a handle assembly, a support plate assembly, a seat and a connecting assembly. The seat is detachably provided on the support plate assembly. The connecting assembly is configured to achieve the rotational connection between the handle assembly and the support plate assembly. The connecting assembly includes a connecting plate, a hinge shaft and a fixing plate. In this application, the hinge shaft is located below the support plate assembly, such that when the folding scooter is folded, the rotational axis of the handle assembly is located below the support plate assembly, thereby enabling the handle assembly to closely cling to the support plate assembly.

Abstract: The present disclosure concerns embodiments related to methods of enriching particular DNA for analysis of methylation status and/or profiles, for example in the process of diagnosis of cancer. In particular embodiments, the methods utilize cell-free DNA as a source of DNA instead of genomic DNA and allow for focused enrichment of fragments having two or more enzyme digestion sites and containing at least one CpG site.

Abstract: Provided is a magnetically fastening apparatus. The magnetically fastening apparatus includes a zipper tab and a lock body. The zipper tab can fit with the lock body by magnetic attraction. The lock body is provided with a control member. The control member has a locking position and an unlocking position. The zipper tab can fit with the lock body by magnetic attraction when the control member is in the locking position. The zipper tab and the lock body are configured to release the magnetic attraction relationship between the zipper tab and the lock body when the control member is in the unlocking position.

Abstract: The present invention provides the cloning of intron-containing Amaranthus caudatus agglutinin (ACA) gene from Amaranthus caudatus and the coding region gene sequence encoding the ACA protein. The said gene sequence of the ACA gene coding region was ligated with highly efficient and stable microbial expression vectors to produce the ACA protein using microbe largely. High expression of the ACA gene can make the transgenic plants have antiaphid activity and improve the nutrition quality thereof. The ACA gene has potential application value in plant anti-insect gene engineering and quality improvement.

Abstract: The present invention provides the cloning of intron-containing Amaranthus caudatus agglutinin (ACA) gene from Amaranthus caudatus and the coding region gene sequence encoding the ACA protein. The said gene sequence of the ACA gene coding region was ligated with highly efficient and stable microbial expression vectors to produce the ACA protein using microbe largely. High expression of the ACA gene can make the transgenic plants have antiaphid activity and improve the nutrition quality thereof. The ACA gene has potential application value in plant anti-insect gene engineering and quality improvement.