접지선 굵기 산정방식에 관한 연구

崔洪圭,崔秉淑,宋榮柱 홍익대학교 산업기술연구소 2003 産業技術 Vol.13 No.-

Ground wire must choose enough sectional area of conductor endurably in maximum fault current, fault duration time, maximum allowable temperature and have strong durability and life-time can bear enough from spontaneous corrosion or electrolytic corrosion and must choose material that problem does not exist electrically and mechanically when connection or junction. In this paper, modeled new ground wire size numerical formula, and examine and compare of modeled numerical formula and abroad regulation, and proved and analyzed validity of the new ground wire size computation method because do simulation to computer program.

접속방법에 따른 접지도체 굵기 제안식

崔洪圭,吳廷錫,宋榮朱 弘益大學校 産業技術硏究所 2004 産業技術 Vol.14 No.-

접지도체의 굵기를 결정하는 국외 규격은 재료의 특성값인 물리적 정수까지 적용하여 광범위하게 적용할 수 있는 반면 수식이 복잡한 문제점이 있고 JIS와 국내규격은 수식은 간단하나 제약조건이 많은 문제점이 있다. 또한, 접지도체의 접속방법에 따라 최대허용온도가 다르게 적용되므로 접지도체 굵기 산정 방식이 복잡하고 적용 방법이 상이하여 시공현장에서 엔지니어들이 적용하는데 많은 어려움이 있다. 따라서, 본 논문에서는 새로운 접지도체 굵기 산정방식을 제시하고 접속방법에 따른 접지도체 굵기 산정 간이식을 제시한다.

Pd/C 촉매에 의한 2-(2-hydroxy-5-methyl-phenyl)-2H-benzotriazole 합성 반응의 특성

최주홍,이정원,이대광,이동근 慶尙大學校生産技術硏究所 1994 生産技術硏究所論文集 Vol.10 No.-

The reduction process using Pd catalyst is very attractive in the view points of the simple reaction step and the relatively less discharge of pollutants. The reduction characteristics of o-nitrohydroxyazobenzene(O-NHAB) with Pd/c catalyst was investigated in an autoclave and a reactor operated at atmospheric pressure. The reduction performance of O-NHBA in the auto clave showed high pressure gave good yield for tinuvin P. The maximum yield of tinuvin P based on o-nitroaniline was 63.3%. Some contents of water in the solution improved the reaction rate ad reduced the formation of impurities. Reaction temperature was able to be increased up to 75℃ with the relatively less impurities. The optimum content of NBA was about 10%.

철근 콘크리트 기둥의 최적화에 관한 연구

최홍식,변근주 연세대학교 산업기술연구소 1984 논문집 Vol.16 No.1

This study is concerned with the optimum proportioning of R.C. sections for the optimum design of R.C. columns, using the Working Stress Design theory based on the AIK (the Architectural Institute of Korea) Code and the Ultimate Strength Design theory based on the ACI Code (318-77). In R.C. columns, since the strength and the steel ratio are usually considered at the preliminary stage, the design constraints used are strength constraints, and the side constraints(upper and lower limits of steel ratio). Cost objective function for the minimum cost design is obtained by considering the cost of concrete, steel bars, and forming. Section optimization of a column is achieved by using SUMT for the tension controls cases, and the heuristic method for the compression controls cases. It has been observed that the optimum proportioning of R.C. column results in significant saving in the construction cost, and that the minimum steel ratio of the Code, for the compression failure column, and the balanced steel ratio, for the tension failure columns, were the optimum solutions. The optimization algorithm developed may be recommended to achieve the minimum cost design of R.C. columns.

폐모세포종 : 1례보고 A Case Report

최영호,서홍주,임영혁,김정중,박성강,이석기,임진수,김은규 조선대학교 2001 The Medical Journal of Chosun University Vol.26 No.2

Pulmonary blastoma is a very rare primary neoplasm of the lung. We experienced a case of pulmonary blastoma in a 40 years old man. The mediobasal segmentectomy of the right lower lobe was performed. The patient was discharge on the postoperative days 6. There is no evidence of recurrence or metastasis on followup study during 7 months period after operation.

여가, 레크리에이션, 놀이에 대한 개념 연구

최용민,주동엽,김홍식 東新大學校 1997 論文集 Vol.9 No.-

The purpose of this study is to analyze the terms, Leisure, Recreation, and Play in an attempt to explain the complex phenomena of the terms. It is achieved by reviewing past literature. The reasons for developing definitions and ways of measuring these terms are to help both the practicing leisure professional and those who study the leisure phenomena. By defining and measuring these terms, we can more accurately predict the consequences and actions of our work as leisure professionals. One can also be provided a better understanding of the phenomena of the terms. For the research methodology, a descriptive study, which is to present a detailed picture of the phenomena hilt does not attempt to test or build theoretical models, was used for this study. On the basis of the results analyzed in the study, findings were made as follows. Leisure can be viewed from a number of different perspectives. Some theorists suggest that leisure is an element of time, whereas others have perceived it as a set of unique activities in which individuals participate. Recreation can be viewed as a wholesome activity in which individuals participate in their leisure time. Recreation is a more commonly used and understood term among the general public than either leisure or play. Play is an exceedingly interesting, yet diverse and different topic to identify. Many theories have emerged to describe play. However, today it has no generally accepted explanation or definition. Unfortunately, confusion interpreting leisure, recreation, and play was found in this study. Based on the results of this study, this researchers offer one possible view of the terms for the further studies. The new terms defined are provided.

Los términos de parentesco como marcador conversacional en el lenguaje juvenil de Buenos Aires, Madrid y Santiago de Chile

최홍주 부산외국어대학교 이베로아메리카연구소 2013 이베로아메리카 Vol.15 No.2

Este estudio intenta explorar las funciones discursivas y pragmáticas de los vocativos de parentesco en las diferentes variantes del lenguaje juvenil español. Es bien sabido que el lenguaje juvenil se caracteriza por un patrón de conducta diferenciador de las demás generaciones. Los adolescentes suelen crear sus propios términos o hacen uso del lenguaje contra lo normativo. El objeto de la investigación son los títulos familiares que se utilizan fuera del parentesco con otros significados. Nos interesa averiguar, por un lado, qué tipo de tratamientos familiares desempeñan el papel del marcador discursivo en el lenguaje de los adolescentes. Por otro lado, si estos recursos discursivos se utilizan de igual frecuencia y función en las algunas variantes del español: la de Buenos Aires, Madrid y Santiago de Chile. El resultado del análisis demuestra casos de extensión semántica en que se amplía la dimensión semántica para designar otras relaciones no asociadas con las palabras. Las relaciones interpersonales dan lugar, conforme al grado de confianza, a nuevas denominaciones de nuestros interlocutores. Los datos analizados también confirman que no todas las palabras de parentesco se emplean como marcadores discursivos por los adolescentes y existen apelativos que son formas preferidas que otras.

회귀분석(regression analysis)을 이용한 개인별 혈중알콜농도의 감소율 계산

홍성욱,권미아,최혜진,박용훈,인상환,김동우,정주연,우상희,박혜성 內務部 國立科學搜査硏究所 2002 國立 科學 搜査 硏究所 年報 Vol.34 No.-

아가리쿠스버섯에서 분리한 조단백다당류의 막분리 및 분무건조 특성

홍주헌,윤광섭,최용희 한국식품저장유통학회 ( 구 한국농산물저장유통학회 ) 2004 한국식품저장유통학회지 Vol.11 No.1

η_(evap)분자량에 따라 다양한 생리활성을 나타내는 아가리쿠스버섯에서 분리한 조단백다당류를 고부가가치 기능성 소재로 개발하기 위하여 막분리 및 분무건조 공정에 따른 특성을 조사하였다. 아가리쿠스버섯 조단백다당류를 분자량 크기에 따라 여과하는 동안 공정온도에 따른 투과플럭스의 변화는 10 kDa와 150 kDa 모두에서 유사하였는데, 막분리 온도 및 압력이 증가함에 따라 비례적으로 증가하였으며,40℃에서의 투과플럭스가 가장 높았다. 시간에 따른 투과플럭스의 변화는 막분리 30분 경과시 급속히 감소하였으며, pore size가 10 kDadhk 150 kDa일 때 공정압력이 각각 1.2 kg_(f)/㎠ 와 2 kg_(f)/㎠에서 가장 높았다. 한외여과 후 아가리쿠스버섯 조단백다당류의 점도는 여과 전 13.9cP에서 여과후 10 kDa이하와 10∼150 kDa구간은 각각 10.8, 11.9cP로 점도가 저하되었으나, 150 kDa이상은 20.1cP로 점도가 증가되었다. 분자량 크기가 다른 3가지 분획물에 대한 분무건조 공정에서의 열효율성은 가열공기온도, 시료공급속도 및 농도가 증가할수록 열효율성이 증가함을 알 수 있었으며, 시료공급속도가 가장 중요한 영향인자임을 확인하였다. This study was conducted to investigate the characteristics of ultrafiltration and spray drying process for crude protein bound polysaccharide(CPBP) isolated from Agaricus blasei Murill. In ultrafiltraion process, the permeate flux increased with the increase of operating pressure and temperature. The permeate flux declined continuously while the fouling materials were accumulated on the membrane as the operation time increased. In comparing of raw CPBP and filtered CPBP, the viscosity of CPBP treated UF was decreased and AE value of treated samples was increased. Thermal efficiencies of spray drying process were increased by increasing inlet temperature, feed rate and feed concentration.

장기간 보관한 멸균물품의 오염 상태에 관한 연구

주홍순,조순덕,정재심,신동분,임바올라,노은지,이선희,송영미,최정화,백병윤,김미나 대한병원감염관리학회 2003 의료관련감염관리 Vol.8 No.1