Abstract: The patent discloses a method for efficiently collecting and purifying Orobanche cumana (O. cumana) germination stimulants using aeroponic system and solid-phase extraction (SPE), including the following steps: (1) sunflower seeds germination, then planting sunflower seedlings in aeroponic device, and cultivating the sunflower seedlings in the aeroponic system; at the aeroponic stage, phosphorus-containing aeroponic nutrient solution is first used to cultivate the sunflower seedlings for 20 to 25 days, and phosphorus-free aeroponic nutrient solution is then used instead to subject the sunflower seedlings to starvation cultivation for 5 to 7 days; and (2) passing all nutrient solutions in the aeroponic device through an SPE cartridge for SPE to extract O. cumana germination stimulants. The obtained O. cumana germination stimulants are diversified, and have high concentration and purity.

Abstract: The present invention provides a method of using plant material to simultaneously control weeds and plant target plants, including the following steps: covering the carrier with plant material with a thickness of 0.1˜12 cm to form a plant material layer, controlling the water content of the plant material during the covering period, immediately before planting and after planting, planting the target plant on the surface of the plant material layer or in the plant material layer. The subject method could make full use of plant resources, control weeds when they are the most vulnerable, and produce a synergistic effect of different planting methods for different target plants. At the same time, the method achieves low cost and ensures the survival rate of planting target plants.

Abstract: The patent discloses a method for efficiently collecting and purifying Orobanche cumana (O. cumana) germination stimulants using aeroponic system and solid-phase extraction (SPE), including the following steps: (1) sunflower seeds germination, then planting sunflower seedlings in aeroponic device, and cultivating the sunflower seedlings in the aeroponic system; at the aeroponic stage, phosphorus-containing aeroponic nutrient solution is first used to cultivate the sunflower seedlings for 20 to 25 days, and phosphorus-free aeroponic nutrient solution is then used instead to subject the sunflower seedlings to starvation cultivation for 5 to 7 days; and (2) passing all nutrient solutions in the aeroponic device through an SPE cartridge for SPE to extract O. cumana germination stimulants. The obtained O. cumana germination stimulants are diversified, and have high concentration and purity.

Abstract: The present invention relates to dental implants. It provides an improved dental implant wherein the largest horizontal cross-section of the implanted body portion is larger than the largest horizontal cross-section of the neck portion and a method to design a dental implant using finite element analysis.