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H : 소장처정보

T : 목차정보

한국환경과학회지 = Journal of the environmental sciences 9건

  1. [국내논문]   A Study on the Vernacular landscape Pattern of Nagan Walled Town(낙안읍성) in Suncheon  

    Shin, Sang-Sup (Dept. of Landscape Architecture, Woosuk University ) , Park, Jae-Hyun (Dept. of Landscape Architecture, Woosuk University)
    한국환경과학회지 = Journal of the environmental sciences v.13 no.2 ,pp. 109 - 116 , 2004 , 1225-4517 ,

    초록

    Nagan walled town is located on an axis connecting symbolic places, which is a lucky place from the Fengshui point of view because a mountain sits to the rear and a body of water sits to the front. It represents the environmental development of cultural space by blending folk belief, religion, social systems, adminstration facilities and living culture buildings. Therefore, it has a sustainable cultural view connected with a formed or formless religious view and an artificial view (walls, government buildings, living houses, cultivated lands, etc.) in a natural landscape. Environmental design techniques, enlarging the meaning and value of living on a mental level, can be found in the arrangement of space composition and settlement of Nagan walled town. The organised spaces of government and residential areas were constructed within the wall with the view of searching for lucky places (from best, better and good places) in order to construct ecological networks according to the outlooks of space and settlement.

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  2. [국내논문]   How to Keep the Sustainability of the Landscape Resources of the East Coast in South Korea  

    Shin, Seung-Choon (Dept. of Local Government, Kangnung National University ) , Park, Yong-Gil (Dept. of Local Government, Kangnung National University)
    한국환경과학회지 = Journal of the environmental sciences v.13 no.2 ,pp. 117 - 127 , 2004 , 1225-4517 ,

    초록

    The purpose of this study is to present the conditions and methods for keeping the sustainability of the landscape resources of the East Coast of Gangwon province, the Republic of Korea by investigating the landscape resources management in the area and pointing out its problems. The unit of analysis in this study is four cities and two counties located along the national road route seven in Gangwon province. The classification and characteristics of the landscape resources in this area was analyzed by a literature review, and we surveyed the tourists visiting the area and statistically analyzed the data in order to examine their satisfaction with the landscape resources management and make recommendations. The problems of the landscape resources management are: 1) the disturbance of the persistence of life by reclamation, the population reduction in the ecosystem due to the overload in environmental capacity, and the severance of space between land and water. 2) the reduction of the benefits from indirect experience by interfering with the conservation of fluxes --- the manipulation of horizontal arrangement of the landscape resource, the visual disturbance by the construction of high-storied buildings, and the disharmony between the color/image and the environment. The means for keeping sustainability of the landscape resources include the regulations of development and use, the change in the recognition of the value of landscape resources and the moral system, and the improvement of resource management skills.

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  3. [국내논문]   Visitors Satisfaction With Entrance In Soraksan National Park   피인용횟수: 1

    Jo, Tae-Dong (Dept. of Environmental Landscape Architecture, Kangnung National University)
    한국환경과학회지 = Journal of the environmental sciences v.13 no.2 ,pp. 129 - 134 , 2004 , 1225-4517 ,

    초록

    Understanding aspects of the use of Korean representative Soraksan National Park and investigating the factors affecting visitors' decision-making, this study aims to suggest a positive development plan for the rational use of the national park. The questionnaire is for those who have visited Soraksan National Park more than once. This research shows that most of the visitors wish 'entrance congestion' to be solved by introducing a 'previous reservation' system and a non-polluting shuttle bus; therefore there is a chance that they could be introduced for the settlement of the existing problems.

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  4. [국내논문]   Mean Flow and Variability in the Upper Portion of the East Sea Proper Water in the southwestern East Sea with APEX Floats  

    Lee, Homan (Marine Meteorology and Earthquake Research Laboratory Meteorological Research Institute ) , Kim, Tae-Hee (Marine Meteorology and Earthquake Research Laboratory Meteorological Research Institute ) , Kim, Ji-Ho (Marine Meteorology and Earthquake Research Laboratory Meteorological Research Institute ) , Seo, Jang-Won (Marine Meteorology and Earthquake Research Laboratory Meteorological Research Institute ) , Youn, Yong-Hoon (Marine Meteorology and Earthquake Research Laboratory Meteorological Research Institute)
    한국환경과학회지 = Journal of the environmental sciences v.13 no.2 ,pp. 135 - 141 , 2004 , 1225-4517 ,

    초록

    Drift data from 17 Argo profiling floats in the East Sea are used to understand the mean flow and its variability in the upper portion of the East Sea Proper Water (UESPW) (around 800 m). The flow penetrates into the Ulleung basin (UB) through two paths: an extension of the southward flowing of the North Korean Cold Water along the east coast of Korea and between Ulleung Island and Dok island. Flows at 800 m are observed in the range of from 0.2 to 4.29 cms-1 and the variability in the north of the UB is larger than that in the south of the UB. In the UB, cyclonic flows from 0.3 to 1.6 cms-1 are observed with the bottom topography. We found that the mean kinetic energy (MKE) and the mean eddy kinetic energy (EKE) are 1.3 and 2.1 cm2s-2 respectively.

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  5. [국내논문]   Performance Evaluation of Inter-Locking Block Using Fly Ash   피인용횟수: 2

    Shin, Byung-Chuel (Dept. of Landscape Architecture, Joongbu University)
    한국환경과학회지 = Journal of the environmental sciences v.13 no.2 ,pp. 143 - 148 , 2004 , 1225-4517 ,

    초록

    In this paper, the properties of inter - locking block using fly ash are discussed in order to provide economical advantages and improve quality, and protect environment and recycle resources. Fly ash is the by-product of coal in thermal power plant. The experimental parameters are fly ash content, the amount of AE water - reducing agent and mixing proportion of cement mortar. According to the experimental results, the improvement of quality in the side of strength, absorption ratio and freeze - thaw resistance for manufacturing inter -locking block and the curtailment of cost can be achieved in case of 15% of fly ash and 0.3% of AE water- reducing agent are mixed into mortar mixture of 1 :6(C:S).

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  6. [국내논문]   Effects of Electric Current and Potential on the Electrokinetic Removal of Heavy Metals from an Abandoned Mine Tailings  

    Shin, Hyun-Moo (Department of Civil and Environmental Engineering, Kyungsung University ) , Lee, Chang-Eun (Department of Civil and Environmental Engineering)
    한국환경과학회지 = Journal of the environmental sciences v.13 no.2 ,pp. 149 - 159 , 2004 , 1225-4517 ,

    초록

    In the removal of heavy metals from the mine deposit using electrokinetic processes, the effects of operation under both constant current and constant potential conditions were estimated. The results of soil pH distributions for DDW-20 V and DDW-100 mA cases after the electrokinetic remediation tests were observed. In the former case, soil pH was not much changed and kept to almost constant value just little higher than initial soil pH of 3.52, except near the cathode, which was about pH 5. While in the latter case, soil pHs of anode and the cathode regions were less than pH 3 and about 6, respectively. The electroosmotic flow to the cathode increased rapidly till 10 hrs and decreased steadily and then maintained to constant rate until the end of operation at constant current condition. Electric potential gradient was continuously increased to as much as 34.375 V/cm. At the steady state, values of the apparent electric conductivity for DDW-20 V and DDW-100 mA were around 40 ${\mu}\textrm{s}$ /cm and 30 ${\mu}\textrm{s}$ /cm, respectively. In the DDW-100mA test, Cu, Cd, and Zn except Pb showed the tendency of moving toward the cathode. While in the DDW-20 V case, it was observed that Cu, Zn, and Pb except Cd were not moved to any directions. The results of the tests demonstrated that the electrokinetic soil remediation process could be operated better under constant current condition than constant electric potential condition.

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  7. [국내논문]   Recycling Technology of Sewage Sludge by Carbonization   피인용횟수: 2

    Park, Sang-U (Dept. of Environmental Eng., Hanbat National University ) , Jang, Cheol-Hyeon (Dept. of Environmental Eng., Hanbat National University ) , Kim, Nak-Ju (Dept. of Fine Chemistry Eng., Seoul National University of Tech.)
    한국환경과학회지 = Journal of the environmental sciences v.13 no.2 ,pp. 161 - 165 , 2004 , 1225-4517 ,

    초록

    This study has been conducted to develop a new recycling technology of sewage sludge using a carbonization process. The carbonizing yield, the calorific value and EC(electric conductivity) of carbonized sewage sludge had a tendency to be decreased with increase of the carbonizing temperature and time, but pH and the C/N were increased with increase the carbonizing temperature and time. The whole pore volume of carbonized sludge processed in the carbonizing furnace was /g, which was smaller than that in the electric furnace. But, the rates of mesopore and macropore were found to account for 100% therein. Rate of color and organic materials removal for dyeing wastewater were determined 70~97%, 78~83% on cotton yarn, 88~96%, 69~80% on wool wastewater and 77~89%, 77~87% on towel compared with powder activated carbon. Effect of carbonized sludge on chrysanthemum growth was investigated. Plant height and number of leaves was better mixture of carbonized sludge than comparison.

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  8. [국내논문]   Characteristics of deodorization for malodorants in aqueous solution by sonication  

    Yoo, Young-Eok (Department of Environmental Education, Daegu University ) , Maeda, Yasuaki (Department of Applied Materials Science, Osaka Prefecture University)
    한국환경과학회지 = Journal of the environmental sciences v.13 no.2 ,pp. 167 - 173 , 2004 , 1225-4517 ,

    초록

    A aqueous solution of malodorants (i.e., n-valeraldehyde, n-valeric- acid, 2-methylisoborneol, and trimethylamine) was exposed to 200KHz ultrasound with a power of 6.0W/ $\textrm{cm}^2$ per unit volume in a sonochemical reactor under room temperature and atmospheric pressure condition. The concentration of malodorants decreased with irradiation time, indicating pseudo-first-order kinetics. The removal efficiency of malodorants was about from 50% to 96% decomposed after 90 minutes sonication. At the deodorization, it was determined by triangle odor bag(TOB) method for odor sensory measurement, and it indicated that over 60% of relative odors were deodorized with degradation by the sonication.

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  9. [국내논문]   Simulation of the Determination of NaCl Concentration in Concrete samples by the Neutron induced Prompt Gamma-ray Method  

    Kim, Hyeon-Soo (Department of Physics, Kyonggi University)
    한국환경과학회지 = Journal of the environmental sciences v.13 no.2 ,pp. 175 - 180 , 2004 , 1225-4517 ,

    초록

    A prompt gamma-ray neutron activation (PGNA) system was simulated by the Monte Carlo N-Particle transport code (MCNP-4A) to estimate the level at which the scattered photon fluence rate, the absolute efficiency of the HPGe-detector, the volume of the concrete sample and the $^{35}$ /Cl(n, ${\gamma}$ ) reaction rate in this sample contribute to the count rate in the NaCl concentration measurement. The n- ${\gamma}$ fluence rates at the ST-2 beam tube exit of the HANARO reactor were used as input data, and the GAMMA-X type HPGe detector was modeled to tally 1.1649 MeV ${\gamma}$ -rays emitted from the $^{35}$ Cl(n, ${\gamma}$ ) reaction in the concrete sample. For three cylindrical concrete samples of 13.8, 46.8 and 157.1 ㎤ volumes, respectively, the relations between the NaCl weight fractions of 0.1, 1, 2 and 5 % in each of the concrete samples and the 1.1 649 MeV pulses created in the HPGe detector model were studied. As a result, it was found that the count rate at the same NaCl concentration nearly depends on the volume of the samples in a simulated condition of the same NaCl concentration samples, and that the linearities of the NaCl concentration calibration curves were reasonable in the narrow range of the NaCl weight fraction.

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