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목재제품 규격,품질 표시제도 국내 도입과 정착을 위한 제언
김윤희 ( Yun Hui Kim ),여환명 ( Hwan Myeong Yeo ),방성준 ( Sung Jun Pang ),양상윤 ( Sang Yun Yang ),강승모 ( Sung Mo Kang ),황권환 ( Kweon Hwan Hwang ) 한국목재공학회 2013 목재공학 Vol.41 No.3
Wood-based products market is new growth engine industry of “Green growth policy”, Korean government establiushed a law, sustainable use of wood, for expanding wood and wood-based products market in 2012. This study was conducted to seek sustainable measures for conservation and management of valuable natural resources, offer expanding quality assurance services for wood-based products, and explore measures for expanding wood-based products labeling system. Through discussed domestic and overseas trends and literatures that concern wood-based products labeling system and investigated case studies that were presently operational. For expanding quality assurance services of wood-based products, Korea Forest Service operates a wood-based products labeling system in integrated management through variety awareness and specialist assessment for each product This process will make enhanced wood-based products labeling system expanded gradually. To evolve into 3rd party quality assurance services on maturity age of labeling system, public communication will help improve awareness of producer and consumer. approprtate incentive program will attract voluntary participation from woodbased product industry. Producers consider environmental ethics in their business and consumer should exercise their right to know,
박용건 ( Yong Gun Park ),장윤성 ( Yoon Seong Chang ),양상윤 ( Sang Yun Yang ),여환명 ( Hwan Myeong Yeo ),이미림 ( Mi Rim Lee ),엄창득 ( Chang Deuk Eom ),권오경 ( Oh Kyung Kwon ) 한국목재공학회 2015 목재공학 Vol.43 No.1
Wood shrinkage, an important study subject with regard to the use of wood, has long been studied by researchers. However, when the size of a wood specimen is measured, distortion must be taken into account, which can be accomplished by applying external force on the wood specimen. However, when measuring a large number of specimens, this technique can be a lengthy process. If the size is measured and the shrinkage is calculated from images acquired with a flatbed scanner, it is possible to reduce the error in the measurement and to shorten the measurement time because the images of many specimens can be acquired with one scan. To clearly establish the boundary between a wood specimen and the background in a scan, an image threshold method was applied here. The size of a wood specimen measured by means of a scanner image was found to be longer than the value determined with a vernier caliper. The maximum pixel size of a scan image for highly accurate shrinkage calculations compared with the use of a vernier cal-iper was 0.053 mm/pixel.
강춘원 ( Chun Won Kang ),최인규 ( In Gyu Choi ),곽기섭 ( Ki Seob Gwak ),여환명 ( Hwan Myeong Yeo ),이남호 ( Nam Ho Lee ),강호양 ( Ho Yang Kang ) 한국목재공학회 2012 목재공학 Vol.40 No.4
Sound absorption capability and anatomical features of the organosolv pretreated Japanese larch and yellow poplar wood were estimated by stereoscopic observation and two microphone transfer function method. Sound absorption capabilities of organosolv treated wood, in the entire estimated frequency range (50∼6,400 Hz), were higher than those of control specimen. Especially, the treated wood`s absorption capabilities measured in the frequency range of 2∼4 kHz were about two times higher than those of control specimen. By the organosolv pretreatment (at 70 ∼120°C), the weight loss of wood occurred in less than 1% of total weight of wood and the porosity of wood increased slightly. In addition, it was presupposed that microstructural changes of wood occurred during organosolv pretreatment and this structural changes cause the increasing of the sound absorption capability of wood.