전도도법에 의한 치환 피리딘들의 해리상수 측정과 그의 온도와 압력에 따른 영향

黃正儀,鄭倧在,金學成,尹永炷,朴義煥 慶北大學校 1984 論文集 Vol.38 No.-

Generally, pyridine and most of substituted pyridines act as base in aqueous solutions. The strengths of their basicities can be expressed quantitatively by the dissociation constant of base or its conjugated acid. Generally, the acidity of substituted pyridines can be expressed by K_a of the following reaction. ◁그림 삽입▷ (원문을 참조하세요) The dissociation constants of these subtituted pyridines have not been reported under high pressure but under atmospheric pressure. In this papers, the dissociation constants of some substituted pyridines were measured under high pressure by the conductometry. From the ionic conductivity of hydrogen ion, the dissociation constants (K_a) were calculated. The K_a values were increased with increasing temperature and were decreased with increasing presure. The charateristics of dissociation process of some substituted pyridines were deduced from the thermodynamic properties calculated from the dissociation constants.

傳統都市 숲의 形成 背景에 관한 硏究 : 경주 황성공원 옛 숲을 중심으로

황정환 경주대학교 1996 論文集 Vol.8 No.-

The purpose of this study is to find out the build-up setting of the Korean traditional urban forests and to interpret it in terms of three viewpoints (historical and religious, urban planning and Fengshui(風水) theory)of build-up setting in order to find out the place-identity of the forests. A case study of this study is a traditional forest of Hwangseung Park in Kyoungju city. The historical and religious types are divided into two themes : native belief and Confucianism. Fengshui type is divided into two themes : Pibo(裨補)and Yobsung(厭勝). An effect of this paper is both to discover the place-identity of the forest and to arrange the forest to suggest the guideline to contemporary park planning for reserving historic space. The results of this study can be summarized as follows : The forests are usually located around the meaningful space in a city which worships the city-spirit of place. Especially, historical meanings are our important historic heritage and serve as enhancing the place-identity of the forest. Korean traditional urban forest serves as a conspicuous visual element that enhances the sense of place in a city, because it locates in a center and enclosing surroundings in a city. So the forest can easily be a famous place in a city. Owing to people's participation of the communal activities and the holistic experience in the forest, people not only feel it intimate. But also consider it as the identity of their community. Build-up setting of the traditional forest of Hwangseung park as a case study was affected by the in fluence of native belief and Pibo meaning of Fengshui theory. A forest of Hwangseung park in ancient Silla era have the function of protection against wind from north wind and prevention of floods at Bugchum in the north of Kyongju city.

불국사 조경 양식의 특징

황정환 경주대학교 1993 論文集 Vol.5 No.-

This study tries to consider religious and ideological background which applied to location, space and composition elements and that characteristics of architectural landscape style of Bulguk Temple(in Kyongju, Korea) is cognized to a certain meaning. The following are the results for analysis and synthesis through content interpretation in terms of landscape architectural meaning and it's style. 1. The view of location 1) Harmony between nature and art, sky line and level treatments harmonious with topography and so on be expressed humanistic style which naturalized. This is flowed more human thoughts in it than the display of human control power through natural forces. 2) Bulguk Temple with basic concepts as Pung Shui(the geometric system used in choosing auspicious sites for graves and houses), ideological and religious background has landscape style in symbolism and sacred characters which expressed supreme ideas of the Shilla people. 2. The view of spacial composition 1) Bulguk Temple with mandala's figure which introduced symmetrical composition of asymmetrical elements, and intersected and repeated positive and negative space has ideological zero style connected with moderate thoughts. This appears to have the mean such as perfection, no fault, originality, and unity. 2) It si symbolistic style which expressed multi-dimensional works with dualism of space, the methods of level treatment, the hierarchy of subject and object, and ideological facility planning. 3. The view of composition elements 1) It is style of life that included appropriative landscape method, combination of passive and active elements, transitional effects with forms and materials, and one plus one make new one to be not two. That is to say, it included creative idea which constantly pursuit artistic characters of the nature and active and durable idea which one makes the other one. 2) A construction methods of a reinforcing stone wall was used one principle of design which lead up to the whole space, Religious construction and landscape elements shows itself as architectural landscape elements which unified with monolithic feeling. Accordingly this is a deductive style which get a clue th whole problems with making much of one element. As mentioned above, these style of the Korean Buddhist Temple landscape architecture is not utilitarianism and rationalism but the results that persisted with metaphysical and naturalistic views, The part of sensibility and mentality which ore ancestors have kept in mind against natural environment and man-made environment have flowed in our subconsciousness. Therefore these are an important problem for us to take shape with reconsidered as self-consciousness.

전도도법에 의한 치환 피리딘들의 해리상수 측정과 그의 온도와 압력에 따른 영향

黃正儀,鄭倧在,金學成,尹永炷,朴義煥 慶北大學校 物理化學硏究所 1985 硏究論文集 Vol.6 No.-

Generally, pyridine and most of substituted pyridines act as base in aqueous solutions. The strengths of their basicities can be expressed quantitatively by the dissociation constant of base or its conjugated acid. Generally, the acidity of substituted pyridines can be expressed by K_a of the following reaction. ◁그림삽입▷(원문을 참조하세요) The dissociation constants of these subtituted pyridines have not been reported under high pressure but under atmospheric pressure. In this papers, the dissociation constants of some substituted pyridines were measured under high pressure by the conductometry. From the ionic conductivity of hydrogen ion, the dissociation constants(K_a) were calculated. The K_a values were increased with increasing temperature and were decreased with increasing pressure. The characteristics of dissociation process of some substituted pyridines were deduced from the thermodynamic properties calculated from the dissociation constants.

경주 서악서원 조경식재 계획의 방향

황정환 경주대학교 2004 論文集 Vol.17 No.-

The Seoak Seowon(Confucian shrine-academy) was built by I jeong(1512~1571), the mayor of Gyeongju, to honor Genernal Gim Yu-Sin in 1563, the 18th year of Joseon King Myeongjong. This study has looked into the present condition of landscape planting in Seoak Seowon(西岳書院) in Gyeongju, and has brought forward a proposal for the right landscape planting plan, considering our ancestors' traditional ideology and the characters and symbolism of landscaping plants. The study has made the basic conception of landscape planting and the direction of the plan through literature inquiries and on-the-spot surveys, and then established concrete directions of a landscape planting plan such as basic landscape planting plans, rainwater/drainage plans, selecting species of trees, according-to-main-space landscape planting plans. The following are summarized results of study and according-to-main-space landscape planting plans. As a result of surveying the present condition of landscape planting, 16species ares the number of all the landscape flora planted inside Seoak Seowon. The according-to-main-space landscape planting plans is as follows. 1. In the space of the Ru-Sammun gate(樓三門空間), point trees are needed outside the Oe-Sammun gate(外三門) for sense of place, and pair planting(對植) method on the left and right side of the Oe-Sammum gate for a sensation of approach. 2. No planting is required around traffic lines parallel with the Oe-Sammurn gate and the Nugak(樓) pavilion for openning the space. 3. In the space of the Dangje shrine(堂劑空間), no planting is required around the buildings in order to develop space for Jangsu(蠶修) and Yusik(遊息), and enhance the diversification and aesthetic value of landscape. 4. In the space of the Nae-Sammun gate(內三空間問), a sensation of approach is emphasized as the space of Sau(祠宇-a shrine) at its entrance and the space of Yusik(遊息空間) is also formed for the Dangje shrine there. Also, the space over-surrounded so far is needed to open at the exit of the Nac-Sammum gate. 5. In the Myodang shrine(崩堂), sense of territory is emphasized, and harmony with the neighboring landscapes and the integrity and spirit of a Seonbi, a classical scholar, are symbolized. The study has proposed the following based on the results. First, different from the present random landscape planting in our Seowons, the right recommendation guidelines must be suggested after considering our ancestors' traditional values/ideology, and the characters and symbolism of landscape flora. Second, much study and financial support for this are required for establishing the framework of the right recommendation guidelines. And, first of all, planting & management programs and budget support must be considered for the sustainable(ESSD) management of our Seowons.

울릉군 도동항 해변광장 조성 기본계획

황정환,윤국진 경주대학교 건설환경연구소 2005 建設環境論叢 Vol.- No.7

The seaside plaza at the Dodong-port of Ulleung-gun is cognized having characters of space. these characters are a gateway connecting to land, the image of Ulleung's symbol, cleanness as a whole and The scenery is beautiful beyond expression. But the seaside plaza be jammed up and be disordered with visitors, natives and mobiles, and then they didn't make the best use of the expressionist nature and landscape on the images of Ulleung of cleanness and pleasant. Therefore this study was to plan on the seaside plaza at the Dodong-port toward the heightening of Ulleung's symbol, identity, individuality through the presentation of images on cleanness and pleasant, and the expropriation of variety activities on the visitors and natives. The seaside plaza was designed with seven schemes those can be summarized as follows. The first was the adaptation of an existing variety outer functions and activities, the second was the efficient distribution of hard-pavements and green-fields, the third was the treatment of existing slopes and terraces, the fourth was the adaptation of the existing understructures and facilities, the fifth was the creation of nightscape for a night use, the sixth was for harmony of forms and functions like a meet, chat, rest, stroll and assembly, the last was the preparation for erecting a symbolic structure in the future.

치성 및 비치성 조직이 악골 창상치유에 미치는 영향에 관한 실험적 연구

황의환,이상래,김소정,홍정표 大韓口腔顎顔面放射線學會 1996 Imaging Science in Dentistry Vol.26 No.2

This study was for comparing healing patterns and effects between with odontogenic and nonodontogenic tissues on the defected mandible. Experimental bone defects that measured 3 mm in diameter were created on the mandibular body of guinea pig by removal of bone with the use of trephine burs and bone defects were grafted with Biogran(Orthovita Co., U.S.A.)and covered with Dura Mata(Pfrimmer-Viggo GmbH Co., Germany). Guinea pigs were serially terminated by fours on the 3 day, the 1 week, the 2 weeks. the 3 weeks, the 4 weeks, and the 5 weeks after experiment, and the mandibular body was removed and fixed with 10% neutral formalin. They were decalcified adnembedded in paraffin as using the usual methods. The specimen sectioned and stained with hematoxylin and eosin and toluidine blue. They were observed with a light microscope and a polarizing microscope. The obtained results were as follows: 1. Defected bone was healed fast from the odontogenic tissues in early stage of the experiment. 2. The arrangement of the bone matrix was relatively regular in the bone from the nonodontogenic tissues, but irregular in the bone from the odontogenic tissues. 3. Compact bone has started to be resorbed and changed to the pattern of matrix bone tissue from 3 weeks after experiment.

경주시 월성원전 민간환경감시기구 조례안의 분석 및 평가

황정환 경주대학교 건설환경연구소 2002 建設環境論叢 Vol.- No.4

울릉군 천부리 해안 소공원 조성계획

황정환 경주대학교 지역개발연구소 2004 地域開發論叢 Vol.- No.6

This study was attempted to establish landscape beauty, artistry, sense of place, local color and pleasantness, to offer rest and culture places for natives and visitors, and to compose settlement environments of pleasant, toward improving livelihood conditions of fishing village for the heightening of Ulleung's image as a whole, the offer of benefit, the upturn planning of sightseeing effect and the creation image of Ulleung's symbol and pleasant at the small-park on the adjacent seashore in the Ulleung-gun Chunbu-li. This plan was composed with the sight analysis, the make up direction of development, the concept of circulation system, the concept of introduction programs, facilities and activities, and the others foundation plan. This plan be expected several kinds effect, the first is improving the image of Ulleung through with promotion environment quality on Ulleung's circular road, the second is offering standard to similar development on the other sites, the others are the effects of regional environmental improvement, the balanced development of tourist attractions, the creation of regional culture and the effects of tourist dispersion in Ulleung-gun.

政府投資機關 豫算會計 制度에 관한 硏究

黃末東,박정환 慶南大學校 産業經營硏究所 1990 産業經營 Vol.13 No.-