38results about How to "Less likely to cause harm" patented technology

The invention provides a hydraulic anchor fluke pulling-out tool. A square groove is arranged on the outer end face of a hydraulic anchor fluke. The tool comprises a mandrel, a slider, a jacket and a locking device, wherein the slider is connected with one end of the mandrel; the outer side of the jacket and the square groove on the fluke are installed in a matching manner; the slider is arranged inside the jacket; a track for the slider to slide is arranged in the jacket along the axial direction of the mandrel; the contact surfaces of the track with the slider incline inwards; the initial position of the slider is at the outer end of the track and corresponds to the position of the bottom surface of the square groove; and the locking device is used for limiting the relative positions of the slider and the jacket. By adopting the tool, the hydraulic anchor fluke can be easily, conveniently and quickly pulled out, time and labor are greatly saved and damage of the tool accessories is avoided.

The invention discloses cyclic dipeptide and application of the cyclic dipeptide in the preparation of a bactericide and belongs to the field of plant protection. The cyclic dipeptide is 3-isopropyl-pyrrolopiperazine-2,5-dione. Pathogen controlled by the bactericide is one or more than one of a group consisting of Botrytis cinerea, corynespora cassiicola, Ascochyta citrullina, Colletotrichum orbiculare, Pyricularia grisea, Candida albicans, Pellicularia, Fusarium oxysporum, Rhizoctonia solani, xanthomonas oryzae, aspergillus flavus and Fusarium moniliforme. The invention reports bactericidal activity of cyclo(L-proline-L-valine) for the first time and provides a new thinking for research and development of the bactericide. As a bactericide, the cyclic dipeptide cyclo(L-proline-L-valine) isderived from a secondary metabolite of Pseudomonas syringae, belongs to a natural product, is easy to degrade in the environment, and is not easy to cause harm o the environment.

The invention discloses a pulmonary artery valve replacement device and a support thereof. The support comprises a valve fixing part, the top edge of the valve fixing part and a support part used for supporting a left pulmonary artery or / and right pulmonary artery are connected through a transitional section, and both the valve fixing part and the support part are of cylindrical structures. The transitional section is provided with a transitional arc surface fittingly contacting with the inner wall of blood vessels. The pulmonary artery valve replacement device comprises a pulmonary artery valve support, an artificial valve is arranged in the valve fixing part, and the valve fixing part is provided with a tectorial membrane below the artificial valve. The pulmonary artery valve support and the pulmonary artery valve replacement device can solve two problems that backflow of pulmonary artery valve and restenosis of pulmonary artery after pulmonary artery valve operation at the same time and are high in stability, operation risk of support displacement is avoided, damage of blood vessels are less prone to causing, stenosis of pulmonary artery branches is solved and repeated implanting of multiple supports is not needed.

The invention relates to an apple peeler which comprises a rack, a supporting rod is rotationally connected to the rack, the supporting rod is connected with the rack through a positioning mechanism, a fixing nail is arranged on the supporting rod, a push plate is slidably connected to the supporting rod, the supporting rod rotates and enables the push plate to move and reset through an elastic conduction mechanism, and a driving rod is rotationally connected to the side wall of the rack. A pull rod is connected to the rack in a sliding mode, the driving rod rotates and enables the pull rod to move through a reset driving mechanism, the pull rod is parallel to the supporting rod, a supporting ring is fixed to the end of the pull rod, a hexagonal groove is formed in the supporting ring, sliding blocks are connected into the hexagonal groove in a sliding mode, triangular cutters are connected to the sliding blocks, and sliding columns are connected to the triangular cutters. A power disc is rotationally connected to the supporting ring, a sliding groove is formed in the power disc, the sliding column is slidably connected into the sliding groove, and the supporting ring is connected with the power disc through a first elastic piece. The peeler has the following advantages and effects that the novel structure is utilized in the scheme, and the purposes of simple and convenient lifting and safe peeling are achieved.