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한국목재공학회> 목재공학(Journal of the Korean Wood Science and Technology)

목재공학(Journal of the Korean Wood Science and Technology) update

  • : 한국목재공학회
  • : 공학분야  >  토목공학
  • : KCI등재
  • : SCOPUS
  • : 연속간행물
  • : 격월
  • : 1017-0715
  • : 2233-7180
  • : 목재공업(~1979)→목재공학(1980~)

수록정보
수록범위 : 1권1호(1973)~49권3호(2021) |수록논문 수 : 2,523
목재공학(Journal of the Korean Wood Science and Technology)
49권3호(2021년 05월) 수록논문
최근 권호 논문
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1Cover and Contents

저자 : 한국목재공학회

발행기관 : 한국목재공학회 간행물 : 목재공학(Journal of the Korean Wood Science and Technology) 49권 3호 발행 연도 : 2021 페이지 : pp. 1-1 (1 pages)

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2Aims and Scope

저자 : 한국목재공학회

발행기관 : 한국목재공학회 간행물 : 목재공학(Journal of the Korean Wood Science and Technology) 49권 3호 발행 연도 : 2021 페이지 : pp. 1-1 (1 pages)

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In this paper, we investigated the carbonization characteristics of lignin hydrochar prepared by hydrothermal carbonization and established a model for predicting the carbonization degree using near-infrared spectroscopy and partial least squares regression. The carbon content of the hydrothermally carbonized lignin at the temperature of 200 ℃ was higher by approximately 3 wt% than that of the untreated sample, and the carbon content tended to gradually increase as the heating time increased. Hydrothermal carbonization made lignin more carbon-intensive and more homogeneous by eliminating the microparticles. The discriminant and predictive models using near-infrared spectroscopy and partial least squares regression approppriately determined whether hydrothermal carbonization has been applied and predicted the carbon content of hydrothermal carbonized lignin with high accuracy. In this study, we confirmed that we can quickly and nondestructively predict the carbonization characteristics of lignin hydrochar manufactured by hydrothermal carbonization using a partial least squares regression model combined with near-infrared spectroscopy.


본 논문에서는 열수 탄화(hydrothermal carbonization)에 의해 제조된 리그닌 하이드로차의 탄화 특성을 조사하였고, 근적외선 분광법과 부분 최소 제곱(partial least squares) 회귀를 이용하여 탄화 거동을 예측하기 위한 모델을 수립하였다. 온도 200℃에서 열수 탄화된 리그닌의 탄소 함량은 무처리 시료 보다 약 3 wt% 높았으며 가열 시간이 증가할수록 탄소 함량도 서서히 증가하는 경향이 나타났다. 열수 탄화는 리그닌을 더욱 탄소 집약적으로 변화시키고 마이크로 파티클을 제거하여 더욱 균질한 특성을 부여하였다. 근적외선 분광법과 부분 최소 제곱 회귀를 이용한 판별 및 예측 모델은 수열 탄화의 적용 여부를 완벽히 구분했으며 높은 정확도로 열수 탄화 리그닌의 탄소 함량을 예측하였다. 본 연구로부터 근적외선 분광법과 결합된 부분 최소 제곱 회귀 모델을 이용하여 열수 탄화에 의해 제조된 리그닌 하이드로차의 탄화 특성을 빠르고 비파괴적으로 예측할 수 있다는 것이 확인되었다.

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4Chemical, Mechanical, Thermal, and Colorimetric Features of the Thermally Treated Eucalyptus grandis Wood Planted in Brazil

저자 : Henrique Römer Schulz , Andrey Pereira Acosta , Kelvin Techera Barbosa , Mario Antonio Pinto Da Silva Junior , Ezequiel Gallio , Rafael De Ávila Delucis , Darci Alberto Gatto

발행기관 : 한국목재공학회 간행물 : 목재공학(Journal of the Korean Wood Science and Technology) 49권 3호 발행 연도 : 2021 페이지 : pp. 226-233 (8 pages)

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This article aimed at thermally treating and charactering the Eucalyptus grandis wood under three different temperatures. For this, pristine eucalypt samples were treated by heating in a laboratory oven at 160 °C, 200 °C and 240 °C, always for 2 h. Treatment parameters (based on weight percentage loss and specific gravity), as well as mechanical (by hardness tests), chemical (by infrared spectroscopy), thermal (by thermogravimetry), and colorimetric (by CIELab method) features were evaluated. Compared to the pristine ones, the treated woods have there was a drop in apparent density at 12 % and consecutively greater thermal stability which is probably related to a previous partial degradation of some major amorphous components (namely cellulose, hemicellulose and lignin), as suggested by the treatment parameters and infrared spectra. Besides of that, the higher the temperature treatment, the higher the loss in surface hardness and the higher the colour darkening.

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5Isolation and Identification of Fungi Associated with Decay of Quercus mongolica(신갈나무의 부후에 관여하는 곰팡이 분리 및 동정)

저자 : Youngseok Ham , Ji-eun An , Soo Min Lee , Sang-hoon Chung , Sun Hee Kim , Mi-jin Park

발행기관 : 한국목재공학회 간행물 : 목재공학(Journal of the Korean Wood Science and Technology) 49권 3호 발행 연도 : 2021 페이지 : pp. 234-253 (20 pages)

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The Quercus mongolica has a high utilization value in industrial economic sector. The species is distributed throughout Korea, however, the damage caused by deterioration such as discoloration and decay is severe. For this reason, the deterioration of Q. mongolica is an obstacle to its use as wood, but research on deterioration factors is insufficient. In this study, we focused on fungi as a factor influencing the deterioration of Q. mongolica, and isolated and identified the fungi from the deteriorated Q. mongolica. In additions, in order to confirm whether the identified fungi actually affects wood deterioration, enzyme activities of the identified fungi were evaluated and related mass loss of wood treated with the fungi was measured by wood decay test. As a result of sequencing analysis using the ITS region of the genomic DNA of the fungi isolated from Q. mongolica, Mucor circinelloides, Cunninghamella elegans, and Umbelopsis isabellina 3 species belonging to Mucoromycota phylum, and Ophiostoma piceae and Aureobasidium melanogenum 2 species belonging to Ascomycota phylum were identified. These five fungi had enzyme (i.e. cellulase, laccase) activities related to wood decay and reduced the mass of heartwood and sapwood of Q. mongolica in practice. In particular, O. piceae and A. melanogenum, which have both cellulase and laccase activities, showed 6.9% and 1.5% mass loss, respectively. These results indicated that five fungi identified in this study influence the deterioration of Q. mongolica and are wood decaying fungi for Q. mongolica potentially.


신갈나무는 국내 전역에 두루 분포되어 있는 경제, 산업적으로 활용 가치가 큰 수종이지만, 변색, 부후 등의 열화에 의한 피해가 심각하다. 이러한 이유로 신갈나무의 부후는 목재로써의 활용에 걸림돌이 되나, 부후 요인에 대한 연구는 미비한 실정이다. 본 연구에서는 신갈나무 부후에 영향하는 요인으로 곰팡이에 주목하였으며, 신갈나무의 부후 부위로부터 곰팡이를 분리, 동정하였다. 또한, 동정 된 곰팡이가 실제로 목재 열화에 영향을 미치는지 확인하기 위해 효소 활성을 평가하고, 곰팡이를 처리한 신갈나무 목재의 질량 손실을 목재 부후 실험을 통해 측정하였다. 신갈나무에서 분리된 곰팡이 5종의 genomic DNA의 ITS region을 이용한 염기서열 분석을 통해, Mucoromycota phylum에 속하는 Mucor circinelloides, Cunninghamella elegans, 그리고 Umbelopsis isabellina 3종과 Ascomycota phylum에 속하는 Ophiostoma piceae와 Aureobasidium melanogenum 2종의 곰팡이가 동정되었다. 이러한 5종의 곰팡이는 목재의 부후와 관련된 cellulase나 laccase와 같은 효소 활성이 있으며, 실제로 신갈나무의 심재와 변재의 중량을 감소시켰다. 특히, cellulase와 laccase 활성을 모두 보유한 O. piceae와 A. melanogenum는 신갈나무의 중량을 각각 6.9%와 1.5% 감소시켰다. 이러한 결과들은 본 연구에서 동정된 5종의 곰팡이가 신갈나무의 열화에 영향한다는 것을 의미하며, 신갈나무에 대한 목재 부후균으로써의 가능성을 시사한다.

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6Design of Logging Infrastructure in Consideration of the Dynamically Changing Environment

저자 : Aleksandr Mokhirev , Konstantin Rukomojnikov , Marina Gerasimova , Sergey Medvedev

발행기관 : 한국목재공학회 간행물 : 목재공학(Journal of the Korean Wood Science and Technology) 49권 3호 발행 연도 : 2021 페이지 : pp. 254-266 (13 pages)

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Using forest resources involves solving complex and diverse tasks. At the same time, one of the key goals in the field is improving the quality of forest infrastructure. This direction requires adequate mathematical and economic justification. Moreover, creating an effective infrastructure will not only increase the accessibility and usage volumes of wood and other forest resources, but also contribute to the development of continuous and sustainable forest management. The existing practice of making decisions in terms of the organizational and technological aspects of logging, based on the personal experiences of managers or leading specialists in enterprises, hinders the achievement of constant optimal efficiency. The paper presents results that are a continuation of the research cycle of the authors' team in the fields of optimization and algorithmization of various logging processes. The focus of the study lies in the processing and movement of wood resources, the most valuable products of the investigated groups of enterprises. To this end, the paper presents a developed algorithm for determining an effective technological chain of transportation in logging operations, and for improving loading and unloading processing operations under dynamic natural and production conditions. This algorithm serves as the methodological basis for designing logging infrastructure in a dynamically changing environment.

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7Gallotannins from Nut Shell Extractives of Camellia oleifera

저자 : Yi-chang He , Mei-jie Wu , Xiao-lin Lei , Jie-fang Yang , Wei Gao , Young-soo Bae , Tae-hee Kim , Sun-eun Choi , Bao-tong Li

발행기관 : 한국목재공학회 간행물 : 목재공학(Journal of the Korean Wood Science and Technology) 49권 3호 발행 연도 : 2021 페이지 : pp. 267-273 (7 pages)

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Camellia nut shell was collected, dried at room temperature and ground to get fine powder. The powder was extracted three times with 95% EtOH, combined, evaporated, and then freeze dried. The crude powder was dissolved in H2O and then sequentially fractionated with n-hexane, CH2Cl2, EtOAc and n-BuOH. A part of EtOAc fraction was chromatographed on a silica gel and on a Sephadex LH-20 columns using MeOH, aqueous MeOH, EtOAc-n-hexane and EtOH-n-hexane to isolate gallotannins. Three gallotannins, 1,2-di-O-galloyl-β-D-glucopyranoside (2), 1,2,6-tri-Ogalloyl- β-D-glucopyranoside (3) and 1,2,3,6-tetra-O-galloyl-β-D-glucopyranoside (4), including gallic acid (1), were isolated and elucidated by NMR and Mass spectroscopies. Although nothing new, these gallotannins were first reported from the nut shell extractives of camellia tree (Camellia oleifera C. Abel). This study was to investigate the chemical constituents, especially hydrolysable tannins, of nut shell extractives of Camellia oleifera and to provide basic information for the future chemical utilization of this species.

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8A Method of Measuring Wood Failure Percentage of Wood Specimens Bonded with Melamine-Urea-Formaldehyde Resins U sing I mage A nalysis

저자 : Minseok Kim , Byung-dae Park

발행기관 : 한국목재공학회 간행물 : 목재공학(Journal of the Korean Wood Science and Technology) 49권 3호 발행 연도 : 2021 페이지 : pp. 274-282 (9 pages)

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Transparent and colorless melamine-urea-formaldehyde (MUF) resins make it difficult to identify the area of wood failure percentage (WFP) in the fracture surface of bonded wood specimens. Therefore, in this study, we develop a method of measuring WFP after the adhesion strength measurement of MUF resins under shear s tress. The fractured wood surface of b lock shear strength (BSS) specimens bonded with cold-setting MUF resins at three melamine contents (20%, 30%, and 40%) was marked black, and then, WFP was accurately measured via image analysis. WFP values measured using this method consistently increased with BSS as the melamine content increased, showing the reliability of this new method. The results suggested that this new method is useful and reliable for measuring the WFP of the fracture surface of wood specimens bonded with colorless adhesives such as urea-formaldehyde, MUF, and melamine-formaldehyde resins.

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9회원 및 학회소식

저자 : 한국목재공학회

발행기관 : 한국목재공학회 간행물 : 목재공학(Journal of the Korean Wood Science and Technology) 49권 3호 발행 연도 : 2021 페이지 : pp. 283-285 (3 pages)

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10Editorial Board & Organization and staffs

저자 : 한국목재공학회

발행기관 : 한국목재공학회 간행물 : 목재공학(Journal of the Korean Wood Science and Technology) 49권 3호 발행 연도 : 2021 페이지 : pp. 286-286 (1 pages)

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