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지하수 오염방지를 위한 산업폐기물 관리평가 모델(IWEM)의 국내 적용성 분석
박동원,우남칠,정다위,Park, Dong-Won,Woo, Nam-C.,Chung, David 한국지하수토양환경학회 2012 지하수토양환경 Vol.17 No.1
Selection of appropriate liner type would be the most important factor to prevent groundwater contamination by leachate from waste management site. This report introduces the IWEM (Industrial Waste Management Evaluation Model) developed by US EPA to evaluate the potential pollution of groundwater under the waste management unit and to suggest an appropriate type of liner, and provides with the results of IWEM application to a coal-ash landfill site in Korea as a case study. IWEM uses a standard method using a database, a decision-making process based on site characteristics, and the user-friendly input-and-output system. Authors evaluate this model to be applicable in Korea provided that the database is replaced into local data.
기포탑내에서 유기염 수용액의 기포의 크기와 계면적에 관한 연구
朴東源 동아대학교 공과대학 부설 한국자원개발연구소 1982 硏究報告 Vol.6 No.2
The effect of size of interfacial area according to physical properties of aqueous solution such as surface tension, activity coefficient, concentration and density was investigated and the correlation amoung these parameters was studied. In aqueous solution of organic salts, interfacial area increases as gas velocity increases, but on the other hand, interfacial area decreased with the increase of concentrations. Sauter diameter increased with the increase of gas velocity but Sauter diameter was independent of the σf(HCOONa, C_(6)H_(5)COONa) and Sauter diameter decreased with the increase of σf(CH₃COONa, CH₃COOK). The correlation among the dimensionless group and physical parameters was formulated from experimental data as follow; d_(s)(gρf/δσ)^(1/3)=a(Fr/We^(0.5))^(b) a : 0.68~1.32 b : 0.228~0.257
朴東源,徐珍棋,林鎭男 동아대학교 공과대학 부설 한국자원개발연구소 1988 硏究報告 Vol.12 No.1
The binodal curve for following systems : benzene-water-n-propanol, benzene-5%NaCl salt solution-n-propanol, n-butyl acetate-water-n-propanol, and n-butyl acetate-5%NaCl salt solution-n-propanol were determined at 25℃. From these binodal curves, tie line and plait point were determined. The consistencies of experimental tie line data were tested using Othmer-Tobias and Eisen-Joffe equations. The parameters in the UNIQUAC model and the calculated values of tie line were predicted. the distribution and the selectivity were determined for each salt concentration, and salt effect on ternary system were examined.
柳基遠,柳逢夏,鄭祐榮,朴東源 慶熙大學校韓醫科大學韓醫學硏究所 1998 慶熙韓醫大論文集 Vol.21 No.1
In order to investigate the clinical efficiency of Jungritang based on Oriental Medical References by using the experimental animals, the action of transport rates in the intestine, prevent effect of the ulcer, gastric juice secretion were studied. The results of studies were summarized as follows. 1. Jungritang was showed remarkable accelative effects on small intestinal transportability in mice, and the effect was apparent depending upon the increase of its concentration. 2. Jungritang was showed remarkable accelative effects on large intestinal transportability in mice, and the effect was apparent depending upon the increase of its concentration. 3. Jungritang was showed inhibitory intentions in the group administered 14.9mg/20g and accelative intentions in the group administered 29.8mg/20g on gastric ulcer induced by indomethacin and pyloric-ligated rats, but it was not remarkable. 4. Jungritang was showed remarkable accelative effects on acidity and pepsin output in pyloric-ligated rats, and the effect was apparent depending upon the increse of its concentration.
신지형학 : 방법론과 문제점 METHODOLOGY AND PROBLEMS
박동원 서울대학교 지리교육과 1979 지리학과 지리교육 Vol.9 No.1
Geomorphology has undergone a great revolution in its methodology since the beginning of the 60's. This was brought about not only by the rapidly increasing knowledge and the introduction of new techniques, but the new methodology of geomorphology which differs in many respects fundamentally from that of before the 60's. The new methodology of geomorphology can be summarized as follows: 1) New geomorphology can be divided into geomorphography, functional geomorphology and historic-genetic geomorphology. It might be said that historic-genetic geomorphology was the main stream of geomorphology before the 1960's while functional geomorphology played a very limited role in geomorphology. Therefore, it may be said that the then geomorphology had a dualistic structure and the new geomorphology has a triumvirate structure. 2) Geomorphography understands the landform in terms of spatial distribution, so that the aspect of application such as landform classification for regional planning is emphasized in geomorphography. The newly developing techniques of remote sensing and computerizing contribute greatly to the advances in geomorphography. 3) Functional geomorphology which deals with the interactions of components of geomorphological systems (processes, forms and materials) began to develope rapidly after modern quantitative techniques were introduced into geomorphology in the early 60's. The experimental data from indoor and outdoor experimental sites really helped to solve geomorphological problems, but some data which were acquired under strict artificial conditions seem not to be applicable to the analysis of the present landforms because natural interactions of all the variables are exceedingly complex and may contain unknown and possibly unsuspected factors which may affect the results. The quantitative methods are most useful and indispensible to perform researches of funtional geomorphology and are apt to develop theoretical concepts in geomorphology. 4) Historic-genetic geomorphology, a traditional branch of geomorphology, has for a long time engaged in the reconstruction of the long term development of landform in terms of past climate and tectonics, especially during the Quaternary period. The new development of geochronological dating techniques really helped this field to advance to the level of the super-modern sciences. 5) Functional and historic-genetic geomorphologies show a widely different viewpoint on concepts such as time, factors and spatial organization. These different views have often led to controversies though they are also complementary for solving geomorphological problems. It is assumed that the fast development of remote sensing techniques, geochronological dating techniques and computerizing techniques will certainly change the present structure of geomorphology in the near future-again.
朴東源,徐珍棋 동아대학교 공과대학 부설 한국자원개발연구소 1988 硏究報告 Vol.12 No.2
Binodal curves for solvent(1)-NaCl salt solution(2)-n-propyl alcohol(3) were measured to predict salts effect on ternary solvent(1)-water(2)-n-propyl alcohol(3) without NaCl salt at 25℃, Tie lines were determined from these bimodal curves, and consistency for these data was tested by correlating with Eisen-Joffe equation. NaCl salt solutions were prepared for 5%, 15%, weight percent respectively. It was assumed that quaternany liquid-liquid equilibria with salt were converted to ternary liquid-liquid equilibria without salt if salt were excluded. The bimodal curves with NaCl salt were compared to bimodal curve without NaCl salt. The parameters in the NRTL model and the calculated values of tie line were predicted. Quaternary distribution curves were determined for each salt concentration and salts effect on ternary system were examined.