子宮頸部에 미치는 Estriol의 影響에 關한 基礎的 硏究 : 組織學的, 組織化學的 및 電解質 變動에 關하여 Histological, Histochemical Study and Changes of Electrolyte Distribution

鄭容和 中央醫學社 1970 中央醫學 Vol.19 No.5

This paper is an article to study the effect of estriol in the cervix of rat, from chemical, histological and histochemical points of view. The rats were grouped non-pregnant (ovariectomized) and pregnant with injection of progesterone, estradiol and estriol for 6 days 3mg daily, it daily and for daily respectively, and then Sodium, Potassium in cervical tissue were measured and histological, histochem cal findings examined. The results obtained from this study were, as follows: 1) Compared with effect of estradiol, estriol was increased weakly weight of uterine body, but fairy increased weight of uterine cervix. 2) Water content of cervical tissue in case of estriol injection was much more increased than estradiol and progesterone. 3) It is clarified that estriol increased Sodium in cervical tissue but Potassium was not changed significantly. 4) It was proved in every case that effect of estriol were produced remarkably an increase in edema, vascularity. vacuolization of basal epithelium and hypertrophy of cervical gland. 5) In histochemical staining, PAS positive substance, alkaline phosphatase, RNA and DNA were appeared much in the cervical tissue of rat who given estriol than that of progesterone, estradiol.

트랜스베이 트랜싯 센터의 디자인 요소에서 나타나는 지속가능한 특성에 관한 연구

정용화,박용서 대한건축학회지회연합회 2021 대한건축학회연합논문집 Vol.23 No.5

The purpose of this study was to derive features differentiating the Transbay Transit Center from general intermodal center plans by analyzing sustainable characteristics of the methods incorporated into the spatial design, using climate and topographic characteristics, of the Transbay Transit Center. To conduct this analysis, three key references were used, and it was possible to identify topographic and climatic characteristics, identify design elements that utilized them, and derive design objects that actually implement them, namely the ‘Light Column,’ ‘Penrose Tiling Facade,’ ‘Streamlet Water’s Roof Garden.’ As a result of analyzing the sustainable characteristics of these three design approaches, three key differences were identified. First, it is a sustainable design suitable for San Francisco’s climatic and topographical environment. Second, it includes an air purification design that considers ecological aspects, and third, its water purification design uses the local ecosystem. These design approaches are characterized by the implementation of a natural purification system for air and water that functions as a small ecosystem based on ecological circulation and are intended to be used as basic data for exploring carbon-neutral design strategies in response to climate change.

고속철도역사의 생태통합형 건축 협업 프로세스에 관한 연구

정용화,박용서 대한건축학회 2022 대한건축학회논문집 Vol.38 No.11

This study aims to examine the methodological approach of integrated design based on ecological standards of the overall architecturalcollaboration process centered on the Stuttgart Central Station project. The development background of this project focused on referencesbased on the common guidelines of the master plan of urban and architectural integrated plans and examined all aspects of the architecturaldesign. This integrated the entire design around Light Eye, a module structure in which a skylight-column was integrated. ChristophIngenhoven’s skylight plan was bio-form, Frei Otto’s column plan was bubble form, Werner Sobeck’s roof plan was shown as the designconcept of a hole punching form. This design approach had a tendency toward a net-zero energy structure and implemented eco-integrativearchitecture. The Stuttgart Central Station project suggested the possibility of a new design methodological approach within the scope of anurban project, and will be a great reference for future explorations of integrated design methodologies based on ecology. 본 연구는 슈투트가르트 중앙역 프로젝트를 중심으로 진행된 건축 협업 프로세스의 전반적인 과정을 토대로 생태성에 기반한 통합 디자인의 방법론적 접근을 살펴보고자 한다. 이를 분석하기 위하여 도시ㆍ건축통합계획 마스터플랜의 공통지침에 근거한 참고문헌을 중심으로 중앙역 프로젝트의 개발 배경을 살펴보고, 건축설계상 고려된 제반 사항을 검토하였다. 설계 프로세스 진행상의 핵심적 건축 요소로써 천창-기둥이 통합된 모듈 구조인 ‘Light Eye’를 중심으로 전체적 디자인을 통합하는 가운데 그 세부적 요소는 다음과 같다. 첫째, 크리스토프 잉겐호벤의 천창계획에서는 ‘Bio-Form’으로, 둘째, 프라이 오토의 기둥계획은 ‘Bubble Form’으로, 셋째, 베르너 소벡의 지붕계획은 ‘Hole Punching Form’의 디자인 개념으로 나타나고 있다. 이러한 디자인 접근을 통해 제로 에너지 구조(Net-Zero Energy Structure)의 경향을 보이고 있는 가운데 생태통합형 건축을 구현하고 있다. 슈투트가르트 중앙역 프로젝트는 Urban Project의 범주 내에서 새로운 설계 방법론적 접근의 가능성을 시사하고 있었으며, 향후 생태성에 기반한 통합 디자인 방법론을 모색하는데 많은 참고가 될 것으로 생각된다.

잉겐호벤의 시기별 개념변천에 나타나는 지속가능성의 분석에 관한 연구 - 슈퍼그린의 개념 분석을 중심으로 -

정용화,박용서 대한건축학회지회연합회 2020 대한건축학회연합논문집 Vol.22 No.1

The Purpose of this study, we aimed to expand the concept of sustainability by conducting a time-periodic analysis of the conceptual change in Christoph Ingenhoven’s understanding of architectural sustainability, which moves beyond the limits of most planned eco-friendly architectural approaches and relies solely on physical control technology. To conduct this analysis, we first considered Supergreen, the sustainability concept Ingenhoven has developed. We conducted a time-periodic analysis based on references that encompassed the process of his architectural concept’s time-periodic change. Our analysis of two datasets enabled us to infer the interrelation between the detailed characteristics of sustainability formed by time-period and to identify three general time-periodic conceptual approaches : Organic-functionalism, Bio-form, and Environmental Unity System-Based Architectural Typology. Our findings showed that these approaches are not applied independently, but function as a structure in which concepts were continually extended and linked via interation. The four components of the Supergreen concept – Holistic Approach and Responsibility, Healthy Environment, Green Urban, and Identity Establishment – are thought to serve as significant clues in tracing the methodological evolution of architectural applications.

유 길준의 생애와 사상

정용화 한글학회 2004 한힌샘 주시경연구 Vol.- No.17

유 길준의 생애는 1876년 개항 전후부터 1910년 일제 강점까지의 한국 근대사를 그대로 반영하듯 파란만장하다. 1856년에 태어나 1914년에 타계 하는 동안 그는 격동의 한국 근대사의 주요 역사적 사건에 주역으로 참여 하였을 뿐만 아니라, 그의 사상과 행동의 변화는 당시 지배 엘리트의 사상과 행동의 변화를 반영하는 듯이 보이기 때문이다. 그의 생애는 크게 여섯 시기로 나눠 볼 수 있다. '초기 유학 교육과 신학문의 접촉기', '해외 유학과 근대적 세계관의 형성기', '연금 생활과 저술기', '갑오개혁의 실행기', '일본 망명 및 유배 생활기', '교육 계몽 운동기'. 1914년 9월 30일 유 길준은 59세를 일기로 세상을 떠났다. 개항의 여명기에 태어나 조국의 근대화 실현을 위해 노심초사하다 결국 조국의 멸망과 함께 생을 마감한 것이다. 우리는 유 길준의 생애를 통해 근대 전환기의 역사 속에서 지식인의 고민과 좌절뿐만 아니라 한국 근대사의 굴절의 내막을 들여다 볼 수 있다.

한국 근대의 정치적 형성 : 『서유견문』을 통해본 유길준의 정치사상

鄭容和 진단학회 2000 진단학보 Vol.- No.89

공진산란이론을 이용한 원통형 산란체에 대한 전자기파문제의 역산란 이론

정용화,전상봉,안창회 대한전기학회 2006 전기학회논문지C Vol.55 No.3(C)

- The resonances that contain the information on the properties of the scattering target can be used for target reconstruction approaches. The inverse scattering theory for the resonances has been applied to the problems of the scattering for a spherical, cylindrical dielectric objects and dielectrically coated conductors, shown reasonable results. Though by using this method the thickness and the dielectric constants of the target can be obtained from a determination of the spacing and of the widths of the scattering resonances, the radius of the target should be given. In this paper, we suggest the improved inverse theory combined with the resonance scattering theory to obtain the radius in addition to the dielectric constant of the target. The applications of this method for scattering problems of electromagnetic waves from cylindrical targets were accomplished, and it shows its validity.

원가기획의 부문간 정보공유화 및 지식창조역할-주력업체와 협력중소제조업체를 중심으로-

정용화,이창수,홍정화 한국회계정보학회 2004 회계정보연구 Vol.22 No.1

Pd/titania 촉매에 의한 아세틸렌 Cyclotrimerization

정용화,이태진,김기석 한국화학공학회 2004 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.42 No.1

Pd/titania 촉매에 의한 아세틸렌 cyclotrimerization의 반응성과 생성물 분포의 변화를 상압조건하의 373K에서 flow reaction 실험에 의해서 연구하였다. 주요 생성물로서 에틸렌과 벤젠이 얻어졌으나 시간이 경과함에 따라서 촉매의 피독으로 인하여 아세틸렌 전화율이 급격히 감소하였다. 일정한 반응기체 유속(공간속도 4,000hr^(-1))에서 아세틸렌 농도를 50, 25, 12.5 vol%로 감소시켰을 경우 벤젠 생성량은 감소하였으나 촉매의 피독은 완화되었다. 아세틸렌 농도 변화에 대한 벤젠 생성량의 비교에 의해서 벤젠 생성반응이 아세틸렌 농도에 대해 1차 반응임을 확인하였다. 또한 일정한 아세틸렌 농도 (25 vol%)에 대하여 공간속도를 4,000 hr^(-1)에서 6,000 hr^(-1)로 증가시켰을 경우 촉매의 피독이 완화되었으며 벤젠 생성량도 증가하였다. Flow reaction에 의한 아세틸렌 cyclotrimerization에 있어서 촉매 피독을 완화시키고 벤젠 수율을 증대시키기 위해서는 반응기체 흐름의 아세틸렌 농도와 유속의 최적화가 필요해 보인다. 본 연구에 있어서 palladium-titania 계면의 oxygen anion vacancoies와 환원된 titania 표면이 종전의 연구자들 보다 100K 낮은 온도에서의 벤젠 생성에 기여한 것으로 추정된다. Cyclotrimerization of acetylene was studied by means of atmospheric flow reaction at 373 K on Pd/titania catalyst to investigate variations of catalytic reactivity and product distribution. While ethylene and benzene were obtained as the major products, rapid decrease in acetylene conversion resulted from catalyst poisoning with the lapse of reaction time. For a fixed flow rate(space velocity 4,000hr^(-1)), as acetylene concentrations decreased from 50 to 25, to 12.5 vol%, benzene yields decreased, whereas catalyst poisoning was attenuated. Comparison of benzene evolution signals from the variation of acetylene concentrations showed that the rate of benzene formation is first-order in acetylene pressure. In addition, for a fixed concentration(25 vol%) of acetylene, as space velocity increased from 4,000 to 6,000hr^(-1), benzene yields also increased and catalyst poisoning was attenuated. Optimization of acetylene concentration and flow rate may be necessary to accomplish the attenuation of catalyst poisoning as well as enhancement of benzene yield from acetylene cyclotrimerization by flow reaction. It can be deduced from this study that oxygen anion vacancies at palladium-titania interface and reduced titania made contributions toward catalytic activity for benzene formation at the temperature 100 K lower than those reported by previous researchers.

손톱새 외 1편

정용화 천년의시작 2008 (계간)시작 Vol.7 No.3