• 농업생명과학연구
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• 제45권3호
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• pp.35-41
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• 2011

이 연구에서는 지리적 여건 및 임업경영 여건을 고려하여 우리나라의 목재공급 잠재량을 예측하고자 하였다. 현실적으로 목재생산이 가능한 지역을 추출하기 위하여 목재생산지를 자연적, 이론적, 지리적, 기술적 목재생산지로 구분하여 분석을 수행하였다. 먼저 수치임상도를 이용하여 전체 산림으로부터 입목지를 추출하여 자연적 목재생산지를 구분하였다. 다음으로 법정용도지역, 경사도, 하천 그리고 도로 여건을 고려하여 이론적, 지리적, 기술적 목재생산지를 추출하였다. 입목축적량을 산출하기 위하여 수치임상도의 수종 및 영급에 대한 속성자료를 이용하였으며, 기술적 목재생산지에 대한 임목축적량을 산출함으로써 목재공급 잠재력을 평가하였다. 각 유형별 목재생산지에 대한 자원량을 산출한 결과는 244,150천$m^3$에서부터 596,248천$m^3$에 이르기까지 자원량의 편차가 크게 나타나 지리적 여건 및 임업경영 여건의 고려 수준에 따라 잠재력이 고평가 혹은 저평가 될 수 있는 것으로 나타났다. 지역별 목재공급 잠재량을 분석한 결과에서는 경상북도, 전라남도, 경상남도, 강원도의 순으로 잠재량이 높은 것으로 평가되었다.

• 한국산림과학회지
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• 제99권6호
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• pp.802-807
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• 2010

본 연구에서는 퍼지선형계획법을 적용함으로써 국내의 장기목재공급 잠재력을 예측하고자 하였다. 생산계획 수립을 위한 수식모형을 구성하기 위하여 총 목재생산량의 극대를 목적함수로 설정하였으며, 제약조건으로는 벌채허용면적, 보속수확 등을 고려하였다. 선형계획법과 퍼지선형계획법의 비교 결과 목재생산량 및 입목축척의 관점에서 선형계획법이 퍼지 선형계획법 보다 높게 나타났다. 그러나, 선형계획법에서는 장기적인 관점에서 보속수확을 달성하지 못하는 것으로 나타나 보속성을 고려한 목재공급 잠재력을 예측하기 위해서는 퍼지선형계획법을 적용하는 것이 적합한 것으로 판단되었다. 연구결과 국내 연간 목재공급 잠재량은 약 10.5백만$m^3$으로 추정되었다. 각 지역별 연간 목재공급 잠재량은 경상북도가 가장 많고, 전라남도, 강원도, 그리고 경상남도 순으로 많게 나타났다.

• 한국가구학회지
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• 제11권2호
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• pp.37-43
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• 2000

Ginkgo trees have long been planted in Korea as roadside trees and ornamental trees, but the wood was seldom used except some utilization f3r small artifacts. Soaring prices of imported wood and future uncertainty about long-term supply of foreign woods have stimulated research on value-added utilization of less-utilized domestic wood resources such as Ginkgo wood. The processing properties of Ginkgo wood were investigated to determine its utilization potential in this study, and the results of treatability, drying characteristics, gluability, paintability, bending properties, chemical discoloration characteristics were presented.

• 한국가구학회지
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• 제11권1호
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• pp.75-84
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• 2000

Ginkgo trees have long been planted in Korea as roadside trees and ornamental trees, but the wood was seldom used except some utilization for small artifacts. Soaring prices of imported wood and future uncertainty about long-term supply of foreign woods have stimulated research on value-added utilization of less-utilized domestic wood resources such as Ginkgo wood. The properties of Ginkgo wood were investigated to determine its utilization potential in this study, and the results of anatomical, physical, and mechanical studies were presented with chemical compositions.

• 한국임산에너지학회:학술대회논문집
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• 한국산림바이오에너지학회 2011년도 정기총회 및 학술연구발표회
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• pp.31-33
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• 2011

• 신재생에너지
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• 제18권3호
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• pp.1-9
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• 2022

This study analyzed the anticipated supply-and-demand of forest biomass energy (through wood pellets) until 2050, in South Korea. Comparing the utilization rates of forest resources of five countries (United Kingdom, Germany, Finland, Japan, and S. Korea), it was found that S. Korea does not nearly utilize its forest resources for energy purposes. The total demand for wood pellets in S. Korea (based on a power generation efficiency of 38%) was predicted to be 3,629 and 4,371 thousand tons in 2034 and 2050, respectively. The anticipated total wood pellet power generation ratio to target power consumption is 1.13% (5,745 GWh), 1.17% (6,336 GWh), and 1.25% (7,631 GWh) in 2020, 2030, and 2050, respectively. Low value-added forest residues left unattended in forests are called "Unused Forest Biomass" in S. Korea. From the analysis, the total annual potential amount of raw material, sustainably collectible amount, and available amount of wood pellet in 2050 were estimated to be 6,877, 4,814, and 3,370 thousand tons, respectively. The rate of contribution to Nationally Determined Contributions was up to 0.64%. Through this study, the authors found that forest biomass energy will contribute to a carbon neutral society in the near future at the national level.

• 한국가구학회지
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• 제14권1호
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• pp.59-69
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• 2003

When harmonized with modem design, the Korean traditional lacquered woodenware with a history of about two thousand years has the potential to appeal to the global sense of industrial craftsmanship as it is superior to any in terms of material used and is very friendly environmentally. To maximize this potential, however, it is necessary to develop a firm infrastructure for the supply of lacquer, including the forestation for the lacquer wood, the production of lacquer, the improvement of refining skills, and the development of better paints. Also ways must be found to induce the craftsmanship at the turning lathe to be elevated to a major independent industrial craft. Only then the mass-produced lacquered woodenware for everyday use and as tourist goods, showing the best merits of the Korean lathing technique, will be displayed and accepted with a new appreciation.

• Korean Chemical Engineering Research
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• 제48권1호
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• pp.80-87
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• 2010

발열량이 낮은 저등급 석탄이나 황함량이 많은 petroleum-coke는 그 이용이 제한적이지만 공급이 풍부하여 잠재력이 큰 에너지원이므로, 가스화공정에 적용하여 고급연료인 수소나 액체연료를 생산할 수 있다. 본 연구에서는 상압의 열천칭 반응기(thermobalance)에서 wood chip, 저등급 석탄인 갈탄, 역청탄, 무연탄, pet-coke의 수증기 가스화 반응특성을 조사하였다. 가스화 온도 $600{\sim}850^{\circ}C$, 수증기 분압 30~90 kPa의 범위에서 조업변수들이 가스화반응속도에 미치는 영향을 조사하였다. 기체-고체 반응모델로서 modified volumetric reaction model을 적용하여 가스화반응의 거동을 묘사하고 가스화공정에 필수적인 kinetic 정보를 도출하였다. 저등급탄인 갈탄과 바이오매스인 wood chip은 휘발분 함량도 높고 비교적 높은 가스화반응속도를 보여 가스화반응공정에 적합한 연료이다. Arrhenius plot으로부터 활성화에너지는 wood chip, 갈탄, 역청탄, 무연탄, pet-coke에 대해 각각 260.3, 167.9, 134.6, 82.2, 168.9 kJ/mol으로 구해졌다. 각 연료에 대하여 수증기 가스화반응의 반응차수를 결정하였으며, 가스화공정 설계의 기초데이타로서 겉보기 반응속도식을 제시하였다.

• 전기의세계
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• 제16권1호
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• pp.19-28
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• 1967

Indigenous energy resources available in Korea are limited to the three major resources such as Korean anthracite, hydraulic potential and wood and straws. As reported in various reports concerning energy problem in Korea, unfortunately these three major resources are not only poor in quality but also limited in quantity. The amount of energy to be imported, which will be increased at a considerably high rate by years due to the shortage in the supply by domertic sources against the demand, is studied in the view-pint of sound and logical energy dependence upon the external sources. What would occur, if the imported energy would be exclusively limited to an energy source only, has an enough reason to be paid a significant consideration. As a result, the feasibility is discarded in favour of nuclear power plants after an extensive prospect for electric power development plan covering more than coming thirty years, i.e., up to the year of 2,000 A.D. In briefing, this paper indicates that a measures to accomodate as large amount of nuclear power plants as possible in the electric power system is not only inevitable for a sound solution of the severe energy problem with which Korea is to be confronted but also leads to the national benefit.

• Advances in nano research
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• 제15권5호
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• pp.441-449
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• 2023

Heavy metals, widely present in the environment, have become significant pollutants due to their excessive use in industries and technology. Their non-degradable nature poses a persistent environmental problem, leading to potential acute or chronic poisoning from prolonged exposure. Recent research has focused on separating heavy metals, particularly from industrial and mining sources. Industries such as metal plating, mining operations, tanning, wood and chipboard production, industrial paint and textile manufacturing, as well as oil refining, are major contributors of heavy metals in water sources. Therefore, removing heavy metals from water is crucial, especially for safe water supply in swimming and water sports. Iron oxide nanoparticles have proven to be highly effective adsorbents for water contaminants, and efforts have been made to enhance their efficiency and absorption capabilities through surface modifications. Nanoparticles synthesized using plant extracts can effectively bind with heavy metal ions by modifying the nanoparticle surface with plant components, thereby increasing the efficiency of heavy metal removal. This study focuses on removing lead from industrial wastewater using environmentally friendly, cost-effective iron nanoparticles synthesized with Genovese basil extract. The synthesis of nanoparticles is confirmed through analysis using Transmission Electron Microscope (TEM) and X-ray diffraction, validating their spherical shape and nanometer-scale dimensions. The method used in this study has a low detection limit of 0.031 ppm for measuring lead concentration, making it suitable for ensuring water safety in swimming and water sports.