Abstract: An X-ray imaging includes an X-ray radiation source. The X-ray imaging system also includes an X-ray detector. The X-ray imaging system further includes a gantry structure configured to be mounted to a ceiling or a floor. The gantry structure includes a C-arm having the X-ray radiation source disposed on a first end and the X-ray detector disposed on a second end opposite the first end. The gantry structure also includes a C-arm rotation device coupled to the C-arm and configured to rotate the C-arm relative in an orbital direction relative to the C-arm rotation device. The X-ray imaging system also includes a damping system coupled to the gantry structure and disposed between the gantry structure and the ceiling or the floor, wherein the damping system is configured to dampen vibrations caused by motion of the gantry structure for an entirety of the gantry structure.

Abstract: The present invention relates to a low-volatile organic compound (VOC) natural fiber composite material, a preparation method therefor and an application thereof. In the method, a nanoclay and a resin are blend-spun to prepare modified synthetic fibers, the modified synthetic fibers are mixed with natural fibers or with natural fibers and other fibers to prepare mixed fibers, and the mixed fibers are shredded, mixed, lapped, needle punched or hot pressed, so as to prepare the low-VOC natural fiber composite material. The low-VOC natural fiber composite material can be applied to automobile interior trims after hot pressing. The low-VOC natural fiber composite material has features of low VOC, low density, light weight, low cost, high strength, good toughness, high deformability, high safety, and being environmentally-friendly and recyclable.