Abstract:
PURPOSE: A strength reinforcement type wooden guardrail is provided to reduce damage occurrence from an external impact, and easily implement installation and replacement. CONSTITUTION: A strength reinforcement type wooden guardrail includes a wooden post(10), a wooden rail(20), a metal connecting block(30), and a reinforcement beam(40). The wooden post(10) is vertically erected. The wooden rail(20) is horizontally supported and is installed on the wooden rail(20). The wooden rail(20) includes a hollow(21), numbers of first and second fastening bolts(15,16), and bolt holes(25,26). The hollow(21) is formed in a length direction inside the wooden rail(20). The wooden post(10) is fastened with the wooden rail(20) by the numbers of first and second fastening bolts(15,16). The bolt holes(25,26) are penetrated by the numbers of first and second fastening bolts(15,16). The metal connecting block(30) is coupled to the wooden rail(20), and is placed in response to the wooden post(10). The metal connecting block(30) is connected to the wooden post(10) by the numbers of fastening bolts(15). The reinforcement beam(40) is inserted into the hollow(21) of the wooden rail(20).
Abstract:
PURPOSE: A cedar wood discoloration controlling method is provided to improve the timber weather ability of cedar wood by transferring terpenes, lignans and flavonoids to a splint wood. CONSTITUTION: A cedar wood discoloration controlling method comprises a step of thermal processing or light processing the surface of cedar wood including a black core to reduce the color difference of the cedar wood. The thermal processing is selected from a heat-drying, a vacuum drying, and a hot water treatment. The light processing is a UV processing. The hot water treatment is processed under the condition of the temperature less than 100 deg C.
Abstract:
본 발명은 침엽수종 유래 원료를 당화 및 발효처리하여 바이오에탄올을 제조하는 방법에 있어서, 당화 단계 전에 유기용매 전처리 단계를 포함하며, 유기용매 전처리 단계는 침엽수종 유래 원료를 소정 시간 및 온도에서 중성촉매가 첨가된 유기용매에 담지하는 것을 특징으로 하는 바이오에탄올 제조방법에 관한 것으로, 바람직하게는 유기용매는 에탄올이 선택되며, 중성촉매는 염화마그네슘이 적용되어, 본 발명에 의한 유기용매 전처리에 의한 침엽수종 바이오에탄올 제조방법에 따라 종래 리그린 성분의 고비율로 인하여 바이오에탄올 제조가 용이하지 아니하였던 침엽수종이 바이오에탄올 원료로 재고될 수 있으며, 부식성 및 독성이 적으며 유해성이 낮은 바이오에탄올 제조가 가능하다.
Abstract:
PURPOSE: A cedar wood discoloration controlling method is provided to improve the timber weather ability of cedar wood by transferring terpenes, lignans and flavonoids to a splint wood. CONSTITUTION: A cedar wood discoloration controlling method comprises a step of thermal processing or light processing the surface of cedar wood including a black core to reduce the color difference of the cedar wood. The thermal processing is selected from a heat-drying, a vacuum drying, and a hot water treatment. The light processing is a UV processing. The hot water treatment is processed under the condition of the temperature less than 100 deg C.