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배상근(Sang Keun Bae),최수영(Soo Young Choi) 계명대학교 낙동강환경원 2011 環境科學論集 Vol.15 No.1
As the first stage of the development in a water treatment system for highly concentrated turbid water, a laboratory test is conducted using ion coated natural zeolite. The stirring strength, zeolite dosage, and the change of turbidity after injecting zeolite into 1,000㎖ beaker containing highly concentrated turbid water are observed through time. By keeping the amount of highly concentrated turbid water as 1,000㎖, 60rpm slow stirring rate and 120rpm rapid stirring rate are applied. Different amounts of zeolite are employed as follows: 70㎎, 90㎎, 110㎎, 120㎎, and 150㎎. The analysis of 150min is conducted after input zeolite. In the case of slow stirring rate with 150㎎ zeolite injection, the turbidity changes from 1,446NTU to 17NTU, and the removal efficiency of turbidity is 98.82%. In rapid stirring rate application, with 150㎎ zeolite, it drops from 1,382NTU to 15NTU, and the removal efficiency of turbidity shows 98.91%. In addition, the turbidity of highly concentrated turbid water is rapidly decreased. From these experimental results, we could confirm that zeolite has high reducing effect in highly concentrated turbid water.
배상근(Bae, Sang Keun),신윤호(Shin, Yun Ho),서용수(Seo, Yong Su) 한국지적정보학회 2017 한국지적정보학회지 Vol.19 No.2
지하공간정보는 크게 지반정보, 지하시설물정보, 지하구조물정보로 구분되며, 이는 다시 여러 가지의 세부 정보로 분류된다. 본 논문에서는 다양한 지하공간정보 중 지하공간정보의 개념 및 구분, 특성, 구축 및 관리 현황, 법제도 등에 대한 현황조사를 통해 지하도상가를 연구 대상으로 선정하였다. 문헌조사 및 담당자 심층 인터뷰를 통해 지하도상가의 관리 현황 및 문제점을 분석하고, 그에 대한 해결 방안을 도출하였다. 점포 계약과 관련된 부분은 법제도적인 측면에서의 개선이 필요하고, 정보 구축 및 관리, 활용부분의 문제점은 공간정보를 이용한 개별점포 단위의 정보 구축 및 관리시스템 개발로 해결할 수 있을 것으로 보인다. 또한 지하도상가 정보를 이용한 서비스 모델로서 지하도상가 정보 구축 및 제공 서비스와 공간정보 기반 재난정보 제공 서비스를 제안하였다. The underground spatial information is classified into geotechnical information, underground facility information, underground structure information. In this study, the information of shopping center in underground passage was selected for this study object, after it is studied the concept, classification, characteristics, deployment and management status and the legal system of underground spatial information. And then the problems of management status and legal system were derived and proposed the solutions for them. It is possible to solve the problems to improve the legal system and to build the individual store information and management system based on spatial information. Finally, it was proposed to build and provide the underground mall information, and offer the disaster information service based on spatial information as service models.
배상근 ( Sang Keun Bae ) 한국환경과학회 2016 한국환경과학회지 Vol.25 No.1
In this paper, a groundwater hydrological study of the Gyeongju well during the Silla period is conducted to investigate how sufficiently the Gyeongju well supplied water demand at the time. It is assumed that the current geology and soil condition in Gyeongju remain similar to the Silla period. Also, the land use and land coverage during the Silla period is estimated based on the current land condition in Gyeongju. Precipitation during the Silla period is analyzed using precipitation data from 1984 to 2014 provided by Gyeonju weather station. Precipitation analysis is applied based on 3 different scenarios; precipitation intensity during the Silla period was Case ① the same as, Case ② 30% more, and Case ③ 30% less than the precipitation intensity of the last decade (2005~2014). Furthermore, to observe the use of the well in Gyeongju during droughts, the following condition(Case ④) is also considered; ten year drought during the Silla period was the same as the ten year drought from 1984 to 2014. Available amount of groundwater development is analyzed using NRCS-CN method. The results show that the potential amount of groundwater in Gyeongju during Silla era was for Case ① 62,825,272 ㎥/year, Case ② 93,606,567 ㎥/year, Case ③ 32,277,298 ㎥/year, and Case ④32,870,896 ㎥/year. Also, it has been shown that 45,260,000 ㎥ of groundwater were required to supply to all households in Gyeongju during Silla era. Therefore, if the precipitation intensity during Silla era was similar with the last decade, the groundwater would provide enough supply to all households in Gyeongju. However, in the case that the precipitation intensity during Silla era was 30% less than the last decade or a ten year drought happened, it is predicted that the water use in Gyeongju would have been limited.