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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korean Wood Science and Technology
Journal Basic Information
Journal DOI :
The Korean Society of Wood Science Technology
Editor in Chief :
Volume & Issues
Volume 18, Issue 4 - Dec 1990
Volume 18, Issue 3 - Sep 1990
Volume 18, Issue 2 - Jun 1990
Volume 18, Issue 1 - Mar 1990
Selecting the target year
Studies on Expression Operations of Filter Cakes
Cho, Jun-Hyung ;
Journal of the Korean Wood Science and Technology, volume 18, issue 1, 1990, Pages 3~9
Expression is on operation of separating liquid from solid liquid mixtures which has long been used on a universal scale in widely divergent fields. In fruit pulps processing and fermentation industries. removal of a portion of the liquid in filler cake is essential to the maximum yields of products. In sewage sludge treatments, dewatering of filter cakes is important to disposal by incineration. transportation. and landfill. In the chemical process industries, drying of wet cakes increases cost, and it is desirable to eliminate as much liquor as possible by non-thermal methods. This paper is mainly concerned with the development of a simplified equation for constant-pressure expression.
Characteristics of Hardening Behavior of Korean Rhus Lacquer by F.T.-I.R.
Lee, Phil-Woo ; Kim, Hyun-Joong ;
Journal of the Korean Wood Science and Technology, volume 18, issue 1, 1990, Pages 10~14
Studies on the Production of Roughages from Hyun-aspen (Populus alba × P. glandulosa) by Chemical Treatments -Autohydrolysis-
Kang, Chin-Ha ; Paik, Ki-Hyon ; Wi, Heub ;
Journal of the Korean Wood Science and Technology, volume 18, issue 1, 1990, Pages 15~23
Roughage feeds were produced from Hyun-aspen (Populus alba
P. glandulosa) by autohydrolysis. The objectives of this work were to find proper conditions for the treatment of Hyun-aspen by analyzing the compositional change and digestibility and to determine the content of sugar and phenol contained in liquor extracted by digestion. The results of this work were as follows: 1. The proper condition for autohydrolysis of Hyun-aspen chips were
and 30 minutes in an autoclave. The yield of potential feed from original material and digestibility were 91.3% and 38.9% respectively 2. According to cooking conditions the sugar concentration of extracted solution and the recovery rate of sugar were 0.1~2.5%, 0.3~14.6% respectively. The phenol concentration of extracted solution and the recovery rate of phenol were 0.1~0.3, 0.5~1.8% respectively.
Evaluation of Copper-Chromium-Arsenic Preservatives Fixation on Wood by Measuring the Density of Surface Electric Charge
Kim, Yeong-Suk ;
Journal of the Korean Wood Science and Technology, volume 18, issue 1, 1990, Pages 24~30
This study was attempted to propose a method evaluating fixation of active ingredients in Copper-Chromium-Arsenic preservatives treatment. Fixated amount of active ingredients on wood was obtained by measuring the density of surface electric charge based on
potential. Data accumulated from density of surface electric charge showed that the fixated amount of preservatives on wood increased linearly as concentration of treating solution increaced, which indicatied quantitative reactions in fixation of preservatives.
Effect of Cyclic Exposure on the Mechanical Properties of Fire Retardant Treated Plywood
Kim, Jong-Man ; Levan, Susan L. ;
Journal of the Korean Wood Science and Technology, volume 18, issue 1, 1990, Pages 31~38
Studies on drying rate, stress and defect with board thicknesses and drying schedules of Quercus grosseserrata B1.
Lee, Sang-Jung ; Jung, Hee-Suk ;
Journal of the Korean Wood Science and Technology, volume 18, issue 1, 1990, Pages 39~51
This research was carried out to offer the basis data for development of optimum drying schedule for a domestic oak species (Quercus grosseserrata B1.) by investigating drying rate. stress, defect, and moisuture gradient with board thicknesses and drying schedules (code number T4-C2 and T3-B1). The results were obtained as follows: 1. Average drying rate and total drying time from 52.2% to 5.8% were 0.105%/hr and 486 hours for drying schedule T4-C2 and those from 62.1% to 8.3% were 0.070%/hr. and 811 hours for drying schedule T3-B1. 2. Drying rates for 28mm- and 31mm-thick boards showed similar tendency, but were significantly different from 25mm- thick board in drying schedule T4-C2 and those for 22mm-, 25mm- 28mm- and 31mm-thick boards showed similar tendency but were significantly different from 19mm- thick boards in drying schedule T3-B1. 3. The moisture gradients for drying schedule T4-C2 were steeper than those for drying schedule T3-B1 during drying period. and especially in early drying stage slow slope of moisture gradients of drying schedule T3-B1 was effective in preventing serious problem of surface checks. 4. Drying stresses were lower in drying schedule T3-B1 than in drying schedule T4-C2 during drying period. 5. Drying schedule T4-C2 was appropriate for 25mm-thick board but not for 28mm- and 31mm-thick board because of strong drying condition. Drying schedule T3-B1 was appropriate for 28mm- and 31 mm-thick board but not for 19mm-, 22mm-, and 25mm-thick board because of weak drying condition.
Present Situation and Prospect of Wood Materials and Furniture Industry in Japan - 2. On the Laminated Lumber Industry and the Manufacturing Facilities of plywood -
Mataki, Yoshihiro ;
Journal of the Korean Wood Science and Technology, volume 18, issue 1, 1990, Pages 52~73