Abstract: Disclosed is a mechanical technology that kills parasitic pests, harmful bacteria and weed seeds in the soil by using high-temperature steam while moving forward by using a caterpillar with a self-powered device in order to smoothly perform the eco-friendly high-temperature steam soil disinfection in all types of soils, such as clays and sandy soils, having suitable moisture content; a mechanical technology in which the steam boiler is operated with power of an A/C generator to produce steam the steam is supplied to the re-heater installed on an upper portion of a nozzle through a high-pressure steam hose to increase the steam temperature to reheat the steam with high-temperature dry steam, thereby increasing the efficiency and effectiveness of high-temperature steam soil disinfection.

Abstract: The present invention is a mechanical technology that kills parasitic pests, harmful bacteria and weed seeds in the soil by using high-temperature steam while moving forward by using a caterpillar with a self-powered device in order to smoothly perform the eco-friendly high-temperature steam soil disinfection in all types of soils, such as clays and sandy soils, having suitable moisture content; a mechanical technology in which the steam boiler is operated with power of an A/C generator to produce steam the steam is supplied to the re-heater installed on an upper portion of a nozzle through a high-pressure steam hose to increase the steam temperature to reheat the steam with high-temperature dry steam, thereby increasing the efficiency and effectiveness of high-temperature steam soil disinfection, and a saw blade type crusher is activated with the pre-generated electrical energy to crush and soften the soil, so that the high-temperature steam sprayed from the steam outlet of the nozzle protected by the needle

Abstract: The present invention relates to an apparatus and a method for exterminating pests by injecting high-temperature steam into the ground including sand and the like, wherein a needle rod fixing plate (20) in which a plurality of needle rods (30) is arranged and fixed at the left and right sides thereof is coupled with a lever plate (12) rotated upward and downward by an operating cylinder (10) at a backside of autonomous power equipment (2), a steam generation unit (16) is provided to generate high-temperature steam enabling insect extermination and sterilization and supply the steam to steam injection holes (36) of the needle rods (30), a steam generation unit (16) and a needle rod (30) are connected by a hose, a steam distributor (44-1, 44-2) for supplying the steam to each needle rod (30) is provided on the hose, both ends of the steam distributor (44-1, 44-2) are coupled with a cover (48) so as to be sealed, a heating wire (49) for increasing the temperature of the steam again is provided therein, the needl

Abstract: The present invention relates to an apparatus and a method for exterminating pests by injecting high-temperature steam into the ground including sand and the like, wherein a needle rod fixing plate (20) in which a plurality of needle rods (30) is arranged and fixed at the left and right sides thereof is coupled with a lever plate (12) rotated upward and downward by an operating cylinder (10) at a backside of autonomous power equipment (2), a steam generation unit (16) is provided to generate high-temperature steam enabling insect extermination and sterilization and supply the steam to steam injection holes (36) of the needle rods (30), a steam generation unit (16) and a needle rod (30) are connected by a hose, a steam distributor (44-1, 44-2) for supplying the steam to each needle rod (30) is provided on the hose, both ends of the steam distributor (44-1, 44-2) are coupled with a cover (48) so as to be sealed, a heating wire (49) for increasing the temperature of the steam again is provided therein, the needl

Abstract: Provided are a method of recovering L-threonine from the fermentation broth of an L-threonine producing microorganism, comprising: separating microbial bodies from the L-threonine containing fermentation broth obtained by culturing an L-threonine producing microorganism and filtering the separated fermentation broth to obtain a filtrate; concentrating the filtrate; and reacting the concentrated filtrate with a nonsolvent to obtain crystalline L-threonine, crystalline L-threonine recovered by the method, and a feed additive containing the crystalline L-threonine recovered by the method.

Abstract: Provided are a method of recovering L-threonine from the fermentation broth of an L-threonine producing microorganism, comprising: separating microbial bodies from the L-threonine containing fermentation broth obtained by culturing an L-threonine producing microorganism and filtering the separated fermentation broth to obtain a filtrate; concentrating the filtrate; and reacting the concentrated filtrate with a nonsolvent to obtain crystalline L-threonine, crystalline L-threonine recovered by the method, and a feed additive containing the crystalline L-threonine recovered by the method.