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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 20, Issue 4 - Dec 1992
Volume 20, Issue 3 - Sep 1992
Volume 20, Issue 2 - Jun 1992
Volume 20, Issue 1 - Mar 1992
Selecting the target year
Strategies of Wood Industry Vitalization to Cope with Various Changes of Industry Environment
Jo, Jae-Myeong ;
Journal of the Korean Wood Science and Technology, volume 20, issue 4, 1992, Pages 5~14
Utilization and Tapping of the Sap from Birches and Maples
Yoon, Seung-Lak ; Jo, Jong-Soo ; Kim, Tae-Ok ;
Journal of the Korean Wood Science and Technology, volume 20, issue 4, 1992, Pages 15~20
This study was carried out to improve the method of tapping sap from Betula platyphylla Sukatschev, Betula costata Trautv., Betula schmidtii Regel, Betula davurica Pallas, Betula ermanii Cham, Acer mono Maxim and Acer pseudo-sieboldianum Kom and to use it to natural drinks. The mal or results are as follows: 1. It is no difference of the amount of sap by tapping methods and species of trees. The larger D.B.H. is, the more amount of sap can be gotten. So we thought that the best tapping method is hole-drilling to prevent trees from damage. 2. Sap contains sugars and mineral materials. Birches have glucose and fructose, much more mineral materials than maples. Sugar of maples is mainly sucrose. 3. We assume that mineral materials of birches are effective to urination, to make a stong dody and sucrose of maples is effective to recover from one's fatigue by controlling the blood sugar. 4. In vacuum packing after sterilizing the sap in low temperature, it could be stored more 1 year. So, it is possible that sap will be commercialized.
A Model for Activation Energy of Moisture Diffusion in Wood
Kang, Ho-Yang ;
Journal of the Korean Wood Science and Technology, volume 20, issue 4, 1992, Pages 21~30
An activation energy equation for moisture diffusion in wood was developed with an assumption that activation energy is directly proportional to wood specific gravity. Theoretical activation energies obtained from the activation energy equation were revealed to be always lower than actual activation energies, which implies that activation energy isn't affected only by wood specific gravity. The other affecting factors are possibly anatomical structures of wood which determine a ratio of vapor diffusion to bound water diffusion in wood. For the convenience of estimating actual activation energy by using the activation energy equation, thirteen kinds of species were categorized into three groups according to their anatomical structures.
Standardization, Time Series and Response Function Analyses of Tree-Ring Chronologies from Southern Arizona Conifers
Park, Won-Kyu ;
Journal of the Korean Wood Science and Technology, volume 20, issue 4, 1992, Pages 31~42
Utilization of Wood Collections Using a Database Program for Personal Computers
Lee, Kyoung-Eun ; Park, Won-Kyu ;
Journal of the Korean Wood Science and Technology, volume 20, issue 4, 1992, Pages 43~48
A database system for retrieving the information on wood collections was developed using the D-BASE III Plus program for personal computers. Basic information of biological, physical, chemical and technological properties was added to the data which used to be employed in simple card systems, such as identification number, species name and collection site. All information was fast and reliably retrievable. This paper also discussed the results of a survey on wood collections housed at domestic colleges and research institutes.
Fundamental Studies on the Wood Decay(II) - Physiological and Physicochemical Characteristics of the White Rot Fungi in Korea -
Lee, Dong-Heub ; Choi, Don-Ha ; Yoon, Seung-Lak ; Sohn, Seung-Hyun ;
Journal of the Korean Wood Science and Technology, volume 20, issue 4, 1992, Pages 49~56
Seven white rot fungi (Irpex lactenis, Coriolus hirsutus, Lopharia mirabilis, Schizopora paradoxa, Ganoderma lucidum, Pleurotus ostreatus and Pycnoporus coccineus) native to Korea and two famous exotic lignin degradable white rot fungi (Coriolus versicolor and Phanerochaete chrysosporium) were investigated to clarify their physiological and physicochemical characteristics on white-rotted wood blocks. G. lucidum degraded wood blocks more seriously than those by exotic lignin-degrading fungi, C. versicolor and P. chrysosporium, but only slightly decreasecl the strength of wood which was compared to the weight loss, persumably on the account of its small use of cellulose when attacking wood. It is quite interesting to note that the holocellulose degradation rate of G. lucidum was also higher than any of the other tested fungi. The order of fungi, according to the lignin-decomposing rates, was G. lucidum>P. coccineus>C. versicolor>S. paradoxa>P. chrysosporium>L. mirabilis>P. ostreatus>C. hirsutus>I. lactenis. The lignin degradation of G. lucidum and P. coccineus which were collected in Korea was greater than that of C. versicolor and P. chrysosporium. If holocellulose degradation is not considered. G. lcidum has the merit of actual application in biomass conversion due to linin removal.
Cell Wall Micropore Loading of Pulp Fibers
Lee, Jong-Man ; Jo, Byoung-Muk ;
Journal of the Korean Wood Science and Technology, volume 20, issue 4, 1992, Pages 57~64
The unique cell wall micropores of pulp fiber can be utilized as loading site in variety of important practical application which could be the basis of new papermaking technologies. One of these includes the manufature of paper containing higher levels of in situ filler precipitated. Hardwood pulp fiber were first impregnated with the solution of sodium carbonate(
). The micropores in cell wall of pulp fibers were filled with the liquid salt solution. The second calcium nitrate(
) solution formed an insoluble calcium carbonate(
) precipitate within the cell wall micropores by interacting with the first sodium carbonate solution. The effects of chemical concentration and dryness of pulp fibers on the retention of cell wall micropore loaded filler were investigated. The paper properties of cell wall micropore loaded pulp fibers were compared with those of conventionally loaded and lumen loaded pulp fibers. Also the presense of the fillers within the cell wall micropore was observed by SEM. Increasing the chemical concentration to generate the calcium carbonate increased the retention of filler in cell wall micropore loaded pulp fibers. The particle size distribution of precipitated calcium carbonate ranged from
. But, the average particle size of cell wall micropore loaded calcium carbonate was
. The paper made from never dried pulp fibers, the cell wall micropores which were filled with calcium carbonate, had better mechanical and optical properties than those of conventionally loaded or lumen loaded pulp fibers.
Ruminant Feed Production from Wood by Steaming-Extraction Method (I) -Effect of Solvent Extraction on Asplund Pulp and Steam Exploded Wood-
Paik, Ki-Hyon ; Kang, Chin-Ha ; Kim, Dong-Ho ;
Journal of the Korean Wood Science and Technology, volume 20, issue 4, 1992, Pages 65~72
Steam defiberated pulp and steam exploded wood(birch chip) were extracted with solvents (hot-water, 1% NaOH, MeOH, hot water, 1% NaOH). The properties of residual fiber were examined for the utilization as ruminants feed. The digestibility is 38% in steam defiberated pulp(10kg /
-15min) and 62-77% in exploded wood(17-18kg/
-2~10min), respectively. The more steam pressure and time increase, the more the digestibility increase. The sugars obtained from extractives is amount from 7% to 13% in asplund pulp and from 7% to 10% in exploded pulp. The sugars was mainly composed of 70-80% xylose. The digestibility of residual fiber which is extracted with solvents is low than these of original fibers. Considering the yield and digestibility as ruminant feed, exploded pulp under 17kg /
for 10min has the best efficiency. The exploded wood gives 75.3% on yield(O. D. chip) and 48% on the digestibility.
Purification and Characterization of Complement System Activating Polysaccharide from the Bark of Kalopanax pictus N.
Shin, Keum ; Ra, Kyung-Soo ; Paik, Ki-Hyon ;
Journal of the Korean Wood Science and Technology, volume 20, issue 4, 1992, Pages 73~84
It was observed that the hot-water extract of the bark of Kalopanax pictus N. had the highest anti-complementary activity among the 11 kinds of forest materials. Methanol-and ethanol-soluble portions had low anti-complementary activities, but crude polysaccharide. HKP-0 had a high activity of 80%. HKP-0 contained 54.8% of total sugar and 27.9% of protein. The neutral sugars of HKP-0 consisted of mainly arabinose, galactose and glucose. HKP-4 fraction obtained by cetavlon treatment of HKP-0 showed the highest anti-complementary activity of 90%. The activity was not changed by pronase digestion bu decreased greatly by periodate oxidation. HKP-4 consisted of mainly arabinose and glucose with molar ratio of 1.0 : 22.4, HKP-4-I, an unabsorbed fraction from HKP-4 on DEAE Sepharose CL-6B column showed higher yield and activity than those of absorbed fractions. HKP-4-I was homogeneous, and its molecular weight was about 25,000. HKP-4-I contained 84.0% of neutral sugar and consisted of arabinose and glucose with molar ratio of 1.0 : 11.2. The anti-complementary activity of HKP-4-I was not decreased by the treatment of polymyxin B, and the polysaccharide activated both classical and alternative pathway in complement system. Void volume fraction obtained from HKP-4-I hydrolyzed with
-amylase on Sephadex G-25 column only had a high anti-complementary activity.
Wood Color and Color Improvement
Kong, Young-To ;
Journal of the Korean Wood Science and Technology, volume 20, issue 4, 1992, Pages 85~102