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폐황산 중화 처리 및 석고 결정 성장에 대한 영향인자 확인
주천,최승규,김진수,이상일 한국수처리학회 2019 한국수처리학회지 Vol.27 No.2
A large amount of sulfuric acid waste is produced in the semiconductor cleaning process, and it is high-purity except hydrogen peroxide content. This study focus on using a neutralization method to treat sulfuric acid waste and producing high-purity gypsum. The byproduct gypsum can be put into use if it meets the particle size required by the gypsum board or cement company. Sulfuric acid waste was reacted with calcium hydroxide(Ca(OH)2) and the effect of pH, mixing, reaction time, and seed addition on the size of gypsum particles were studied. The result of the study indicated that the gypsum particle size can be larger than 40μm when the pH is maintained above 4. Secondly, the particle size has a tendency to continue to grow after slowly stirring for about one hour as the neutralization was finished. After that, whether it is continuous slow stirring or not, it maintained the size and has no obvious change. In addition, the addition of seeds promote the particle growth obviously and the staged injection produces a seed effect which also increasing the particle size.
김부식 漢詩에 나타난 표현 특성 연구 - 東文選 수록 작품을 중심으로
주천 가천대학교 아시아문화연구소 2023 아시아문화연구 Vol.61 No.-
Neukcheon Kim Bu-sik (1075-1151) was a famous politician, litterateur, and historian of the Goryeo Dynasty. His works are mainly included in Dongmunseon. In this paper, 33 typical Chinese poems included in Dongmunseon are studied and analyzed. Besides, the artistic features of Kim Bu-sik's Chinese poems are comprehensively studied by considering the theme contents embodied in Kim Bu-sik's Chinese poems. In this paper, the topics in Kim Bu-sik's poems are classified and analyzed by content. The poems fall into four types: anthem, exhortation, lyrics, and lament. This paper provides a detailed analysis of the implied meaning, writing techniques, background, and emotion in these poems, as well as the influence of Chinese literature on them. This paper examines the diversity of themes, genres and rhetorical devices, as well as the uniqueness of styles and conceptions in Kim Bu-sik's Chinese poems. The focus is the acceptance and borrowing of the artistic elements of Chinese poetry. Therefore, Kim Bu-sik’s unique creation features and literature charms are explored. This paper elaborates on the influence of Chinese culture on Korean Chinese poetry through analyzing the 33 Chinese poems in Dongmunseon. Although it is a relatively basic study, it has a reference meaning and value in Kim Bu-sik's research on literature and Korean Chinese poems. In addition, this paper targets only on Chinese poems in Dongmunseon, but it also provides a basis for expanding into many other works by Kim Bu-sik. 뇌천 김부식(1075-1151)은 고려 시대의 유명한 정치가, 문학가, 사학가이다. 그의 작품들은 주로 동문선 에 수록되어 있다. 본고에서는 동문선 에 수록된 33수의 전형적인 한시를 연구하고 분석하였다. 동시에 김부식의 한시에서 구현되는 주제 내용에 대해서 고찰함으로써 그의 한시의 예술적 특징을 종합적으로 연구하였다. 본 논문에서는 김부식 한시 속에 나타난 주제를 내용별로 분류하고 고찰하였다. 주로 응제봉화시, 권풍귀간시, 한유서정시, 애도시 등 네 가지 측면에서 내용을 연구하였다. 특히 전형적인 시가의 우의(寓意), 창작수법, 배경, 시인이 표현하는 감정과 그가 참고한 중국 문학 등에 대해 상세하게 분석하였다. 또한 본 논문은 김부식 한시의 예술적 특징에 대해 제재의 다양성을 살펴보았다. 창작과 수사수법의 다변성(多變性), 풍격과 사고의 경지에 대한 창작의 독특성 등 세 가지 측면에 대하여 예를 들어 분석하였다. 또한 중국 시가의 예술적 요소에 대한 수용과 참고 측면을 상세히 고찰하여 김부식의 독특한 창작 특징을 조명하였다. 본고는 상술한 몇 가지 측면에서 동문선 에 기재된 한시를 중심으로 한국의 한시 작품에 내재된 중국 문화에 대한 참고를 서술하였다. 비교적 기초적인 연구에 해당되지만 김부식의 문학 및 한국 한시의 내용과 형식 연구에 의해 종합적 의미와 가치를 파악하였다. 또한 본 논문은 동문선 에 수록된 한시만을 연구 대상으로 하였지만 실제 김부식의 많은 저작 연구에 확대될 수 있는 기초적인 연구 논문이다.
주천기,노창래,목지원,리영준,김동해,박영기,Choun-Ki Joo,MD,PhD,Chang Rae Rho,MD,Jee Won Mok,PhD,Young Jun Lee,MD,PhD,Dong Hae Kim,MD,Young Ki Park,MD 대한안과학회 2012 대한안과학회지 Vol.53 No.6
Purpose: To report the characteristics and genetic epidemiology of keratoconus patients in the Korean population based on questionnaires, ophthalmologic findings, and genetic studies. Methods: From September 2007 through August 2009, an epidemiologic investigation was performed through questionnaires and ocular examination of 190 keratoconus patients. To investigate the genetic cause, blood samples were taken from the keratoconus patients. Genetic analysis of keratoconus was performed through the analysis of sensitive candidate genes. Results: The mean age of the study subjects was 29.6 years. Seventy-seven percent of the subjects rubbed their eyes with 17 percent suffering from atopy, allergy, and asthma. Thirty-two percent of subjects demonstrated Vogt’s striae as the most frequent biomicroscopic keratoconus finding. No family history was found. Genetic analysis showed sensitive genetic variations of VSX1, LUM, and IL1B. Conclusions: Epidemiology of Korean keratoconus patients was investigated through research and genetic study resulting in discovery of sensitive genes. J Korean Ophthalmol Soc 2012;53(6):839-848