釜山 近郊의 Chironomus의 唾腺染色體에 對하여 : 부산 근교의 Chironomus의 타선염색체에 대하여

이원호 부산대학교 1975 論文集: 自然科學篇 Vol.19 No.-

노랑초파리의 飼育箱 平衡集團에 對한 硏究 : 노랑초파리의 사육상 평형집단에 대한 연구

이원호 부산대학교 1976 論文集: 自然科學篇 Vol.21 No.-

효율적인 자료검색을 위한 아이콘 표준화에 관한 연구

이원호 경복대학 1998 京福論叢 Vol.2 No.-

지난 수년동안 많은 데이터베이스는 우리나라에서 서비스를 해왔고 그 양과 질도 성장해왔으며, 많은 다양한 정보가 지금도 사용자에게 제공되어지고 있다. 최근에 상당수의 데이터베이스가 GUI환경에서 사용되어지면서 떠오르는 문제인 불일치성은 사용자들이 정보에 접근할 때 복잡함과 불편함을 주고 있다. 이에 본 연구는 GUI에서의 구성요소인 아이콘 표준화에 관련된 최근 국내외 동향과 앞에서 제기된 문제점을 해결하기 위한 표준화 작업에 대한 기준과 방향을 제시한다. During the past decades many database distribution services have served their own database services in this country. The variety and quality of the service have been expended according to their growth, and users can retrieve plenty of information now. Recently, Some database distributors begin to serve GUI services. The environment of GUI however, used in a database service are in discord with those in other's. These inconsistencies make users complicated and inconvenient when they access the information. This study have analyzed components of GUI and surveys the trends of icon and presents standardization activities such as guideline to solve these problems.

개량제 종류 및 혼합조건이 탈수특성에 미치는 영향

李元鎬,元聖淵 충주대 산업과학기술연구소 1999 産業科學論文集 Vol.7 No.2

본 연구에서는 슬러지의 탈수효율을 증대시키기 위한 슬러지 개량시 물리 ·화학적 인자들의 영향을 검토하였다. CST는 슬러지의 탈수성을 측정하기 위한 유용한 도구로 기존 탈수성 측정 방법인 SRF와 상관성이 높아 간단하며 신속하고 경제적인 측정이 가능하였다. 바닷물로 응집된 슬러지는 pH가 중성으로 조정되는 경우 슬러지 입자가 해체되어 재결합하기 위해 요구되는 화학약품 요구량은 증대되었다. 탈수 공정에서 혼합은 매우 중요하며 혼합에 의해 슬러지 입자의 크기가 증대 되었다. 하지만, 매우 큰 혼합강도 및 시간에서는 응집물이 파괴되었다. 양이온성 개량제의 이용시 최적 혼합조건은 약 20,000(Gtd)이하에서 관찰되었으며, 슬러지의 성상 및 개량제 주입량에 따라 차이를 보이고 있다. 바닷물 응집 슬러지의 최적 혼합조건은 개량제의 충분 조건에서는 20,000-100,000이었다. 이는 개량제의 충분 조건이 충분치 못한 조건에서 보다 전단력이 증가되었음을 의미한다. 또한 미세 입자가 증가된 조건에서는 최적 혼합 조건이 50,000-300,000으로 증가되었다. 따라서 혼합 조건은 슬러지 탈수를 위한 개량시 중요한 인자이며, 슬러지 개량은 최적의 혼합조건에서 운영함이 바람직하다. In this study, the effect of physo-chemical variables on sludge conditioning of waste sludge was determined to enhance dewaterability of sludges. The Capillary Suction Time (CST) apparatus was observed to provide the first simple, rapid, and inexpensive means for measuring the dewaterability potential of wastewater sludge. Good correlation was also observed between CST and the specific resistance to filtration(SRF). The dewaterability of seawater flocculated sludge was deteriorated with pH adjustment to neutral. pH adjustment of seawater flocculated sludge seems to cause disaggregation of sludge particles, which increase demand for chemicals that recoagulate the fractured aggregates. The mixing characteristics of both the condition and dewatering steps seem to be important in the optimization of the sludge dewatering process. Mixing enhanced initially to increase particle size. However, floc particles were breakup with high mixing intensity and mixing duration. Optimum Gtd values for the seawater flocculated sludge was below 20,000 with use of cationic polyeletrolytes. Optimum Gtd values were varied with dosage of sludge conditioner with sufficient dosage of sludge conditioner With sufficient sludge conditioner, Optimum Gtd value for seawater flocculated tannery sludge ranged from 20,000 - 100,000. This indicates that sludge strength with sufficient dosage of sludge conditioner was enough to stand higher shear force than that with insufficient dose. Also, it was found that optimum Gtd values were significantly increased for dewatering deflocculated sludge of fine particles. In this case, optimum Gtd was ranged from 50,000 - 300,000. Since Gtd was important parameter to improve the dewaterability of conditioned sludge, sludge conditioning process should be operated at optimum range of Gtd.

金忠壯公遺事를 통해 본 光州 楓巖亭 주변의 景觀特性에 關한 硏究

李元浩,金龍基,사공영보,崔鍾熙 한국전통조경학회 2003 한국전통조경학회지 Vol.21 No.2

This study was carried out to recognize the distinctive quality of the scene around 'PUNGAMGEONG'(楓巖亭) through appreciation in its building, location and architectural view of the space based on 'KIM CHUNG JANGGONGYUSA'(金忠壯公遺事), published during the reign of 'JEONGCHO'(正祖) in 'CHOSON'(朝鮮) dynasty. The study was conducted by contents analysis of 'KIMCHUNGJANGGONGYUSA' and other related paleography as prime as well as verification of the location and architectural view of the space through field survey with topographical chart(1/5,000, 1/25,000) and survey drawing. Analysis method fell into the background of building and location space structure as well as a comparative analysis of the literature with interview with local authority staffs and descendants. The results are as followings; 1) The background of the Pungamjeong's building is influenced by KIMDEOKBO(金德普)'s amusement(good landscape gusto) in fine view and moralistic view in nature as well as seclusion and recuperation with misfortune of his family. 2) Location of the Pungamjeong is suitable for seclusion with graceful natural scenes as well as adjacency with the ancestral burial ground for memorial service. 3) The space structure of the Pungamjeong for literature analysis consists of the space for production in bamboo grove to stream surrounding, the space for study and appreciation in pavilion and the space of fairyland in left side of locks. 4) The Pungamjeong stands with a pavilion of two rooms reconstructed in the tile house, and the vegetation appears in the literature of Pinus dansiflora S. et Z, Prunus mume S. et Z, Phyllostachys nigra Munro, Acer pseudosieboldianum Komar and Prunus persica (L.) Batsch forming identifying marks, but Pinus densiflora S. et Z, Phyllostachys nigra Munro, Abies holophylla Maxim, Acer pseudosieboldianum Komar, Carpinus laxiflora Blume, Zelkova serrata Makino, Prunus sargentii Rehder, Fraxinus rhynchophylla Hance, Quercus monglica Fisch and Rhododendron mucronulatu Turcz are found recently. Also, wild natural rocks in the Pungamjeong are one of its valuable parts representing personality of folk belief to the local residents. It is recommended that further embodied and substantive studies should be followed with the systematic literature analysis and field survey for restoration and maintenance of the place since this study comes from the literature analysis only.

컴퓨터 예측모델을 활용한 간헐폭기 활성슬러지 시스템의 결정

辛鎭煥,李元鎬 忠州大學校 1997 한국교통대학교 논문집 Vol.32 No.1

Reactor configuration on intermittently aerated activated sludge system was evaluated by IAWQ model NO.1. The aeration and nonaeration time and sludge retention time of 1hr/lhr and 20day on the performance of nutrient removals was evaluated in intermittently aerated multi-stags activated sludge system, As a result of model operation, COD and T-N removal of two-stage more intermittently aerated activated sludge system was nearly the same.

Synthesis and characterization of planar copolymer for photovoitaic solar cells

이원호 한국고분자학회 2010 한국고분자학회 학술대회 연구논문 초록집 Vol.2010 No.10

태안해안국립공원 인근의 허베이스피리트 사고를 포함한 유류유출 해역의 식물플랑크톤 생태계 1. 하계 식물플랑크톤 군집의 연변동

이원호,김형섭,조수근 한국해양과학기술원 2019 Ocean and Polar Research Vol.41 No.1

Right after the 2007 Hebei Spirit Oil Spill phytoplankton ecosystems were investigated for 11 years based on the seasonal monitoring of the composition and abundance of phytoplankton species. Comparable time-series data from the 1989 Exxon Valdez or the 2010 Deepwater Horizon Oil Spill sites were not available. It was suggested that the ecological healthiness of phytoplankton ecosystems at EVOS sites had recovered after 10 years following the oil spill based on chlorophyll concentrations even though these concentrations only represented phytoplankton communities in most cases. Chlorophyll concentrations can only reflect limited aspects of highly complex phytoplankton ecosystems. During the last 11 years following the 2017 HSOS, extreme variabilities were met in the seasonally averaged ratios of diatoms to phototrophic flagellates including dinoflagellates based on the microscopic cell countings. Summer phytoplankton communities exhibited some cyclic interannual changes in dominant groups every 2−4 years. During the early years (2008−2010) cryptophytes or raphidophytes (Chattonella spp.) dominated alternately each year, which was repeated again in 2014, 2015 and 2017. Two thecate dinoflagellates, Tripos fusus and Tripos furca, together accounted for 52.5% and 50.0% of all organisms in the summers of 2011 and 2012, respectively, which was repeated again in 2018. Summer occurrence and dominance by the phototrophic flagellates including HABs (Harmful Algal Blooms) species as well as their interannual variabilities in the oil spill sites could be utilized as markers for the stable and long-term management of healthy ecosystems. For this type of scientific ecosystem management monitoring of chlorophyll concentrations may sometimes be insufficient to gain a proper and comprehensive understanding of phytoplankton communities located in areas where oil spills have occurred and harmed the ecosystem.

2차원 혼합모드 소자-회로 시뮬레이터에 의한 PN 다이오드 회로의 과도상태 해석 ( Analysis of the PN diode circuit under the transient condition with 2-dimensional Mixed Mode Device-Circuit Simulator )

이원호,이은구,김태한,김철성 대한전자공학회 1998 대한전자공학회 학술대회 Vol.1998 No.7

키서버를 이용한 트랜잭션 처리 시스템에서의 신분확인 ( Authentication in the Transaction Processing System Using Key Server )

이원호,김동규,전학성,김성희 대한전자공학회 1994 대한전자공학회 학술대회 Vol.1994 No.1