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심종섭,정희석,강선구,조재명 한국목재공학회 1982 목재공학 Vol.10 No.2
In order to investigate the annual mean equilibrium moisture content (EMC), the equilibrium moisture content investigated were the desorbed - and adsorbed equilibrium moisture content with two end-matched samples for red pine (Pinus densiflora S. et Z.), Douglas fir (Pseadotsuga menziesii Franco), oak (Quercus mongolica Fischer) and red lauan (Shorea spp.) in instrument screen at forest experiment station located in Seoul, Chuncheon, Daejeon, Kyungju. Jinju and Gwangju area for four years (1970. 1 - 1973. 12). The results summarized were as follows. 1. The annual mean desorbed equilibrium moisture content of red pine, Douglar fir, oak and red lauan were 14.8, 13.7, 14.0 and 14.2 percent respectively and higher than the annual mean adsorbed equilibrium moisture content of those species. 2. The annual mean desorbed - and adsorbed equilibrium moisture content in central areas (Seoul, Chuncheon, Daejeon) were higher than those in southern areas (Kyungju, Jinju, Gwangju). 3. On the whole, the monthly mean desorbed - and adsorbed equilibrium moisture content were lowest in April and highest in August though difference of month in areas. 4. Average and range of annual national equilibrium moisture content was 12.3∼14.2∼ 15.7 percent for desorbed equilibrium moisture content and 1.1.3∼13.2∼14.7 percent for adsorbed equilibrium moisture content and 12.0∼14.1∼16.4 percent for calculated equilibrium moisture content based on tempera ture and humidity.
심종섭,조재명 서울대학교 1959 서울대학교 論文集 Vol.9 No.-
1. The physical and anatomical properties investigated in this study are these properties, which may give more effect on absorption of preservatives, such as variation of annual ring, specific gravity, shrinkage, E.M.C. of both desorption and absorption at 70 percent Relative Humidity Condition, general and minute properties of wood. 2. Through this study, the effect of wood structure, in particular appearance of tyloses in vessel element, and the measured physical properties upon the absorption of creosote was positively observed. 3. 13 percent sodium chloride solution treatment and boiling hot water treatment to improve the preservative absorption characteristics of tested species have shown poor results, however some slight tendency between treated and controlcould be seen.(see Table 6, 7.)