Abstract: The present disclosure relates to a method for extracting caffeic acid and rosmarinic acid from Rosmarinus officinalis L., and more particularly, to a method for extracting caffeic acid and rosmarinic acid from Rosmarinus officinalis L., the method comprising the steps of: (S1) preparing an extraction apparatus including an extractor for passing a solution contained in a main body unit through a filtration membrane to obtain a filtered solution, and dropping the filtered solution to the lower outside through a dropping unit connected to a lower portion of the main body unit, and a receiver located in the lower part of the extractor to collect the filtered solution that is dropped from the dropping unit; (S2) putting dried Rosmarinus officinalis L. into the main body unit, and adding a solvent to the main body unit to immerse the dried Rosmarinus officinalis L. at room temperature; and (S3) dropping a solution in which the dried Rosmarinus officinalis L.

Abstract: An optical connector plug for outdoor waterproof onsite assembly. A frame having slits sheathes and is fixed to an optical cable when the optical cable is constructed on a site. The optical connector plug is waterproofed by a protective tube and an O-ring. The optical cable has a tip at one side which is attached to an assembly in a sealing or mechanical manner, and the frame sheathing an outer side of the optical cable has one side end to which an outer peripheral edge of the assembly is coupled, has the one or more slits which are cut from a middle to the other side end and are formed to be widened and narrowed in compliance with an outer diameter of the optical cable, and has a step on an outer peripheral edge at one side end to be held by an inner peripheral edge of a housing.

Abstract: An optical connector plug for outdoor waterproof onsite assembly. A frame having slits sheathes and is fixed to an optical cable when the optical cable is constructed on a site. The optical connector plug is waterproofed by a protective tube and an O-ring. The optical cable has a tip at one side which is attached to an assembly in a sealing or mechanical manner, and the frame sheathing an outer side of the optical cable has one side end to which an outer peripheral edge of the assembly is coupled, has the one or more slits which are cut from a middle to the other side end and are formed to be widened and narrowed in compliance with an outer diameter of the optical cable, and has a step on an outer peripheral edge at one side end to be held by an inner peripheral edge of a housing.