셀레늄으로 개질된 영가철을 이용한 과황산 활성화 속도 조절 및 활성종 전달율 향상에 관한 연구

권희원,박해성,황인성,김정진,김영훈 한국환경과학회 2023 한국환경과학회지 Vol.32 No.1

The advanced oxidation treatment using persulfate and zero-valent iron (ZVI) has been evaluated as a very effective technology for remediation of soil and groundwater contamination. However, the high rate of the initial reaction of persulfate with ZVI causes over-consumption of an injected persulfate, and the excessively generated active species show a low transfer rate to the target pollutant. In this study, ZVI was modified using selenium with very low reactivity in the water environment with the aim of controlling the persulfate activation rate by controlling the reactivity of ZVI. Selenium-modified ZVI (Se/ZVI) was confirmed to have a selenium coating on the surface through SEM/EDS analysis, and low reductive reactivity to trichlroethylene (TCE) was observed. As a result of inducing the persulfate activation using the synthesized Se/ZVI, the persulfated consumption rate was greatly reduced, and the decomposition rate of the model contaminant, anisole, was also reduced in proportion. However, the final decomposition efficiency was rather increased, which seems to be the result of preventing persulfate over-consumption. This is because the transfer efficiency of the active species (SO4-∙) of persulfate to the target contaminant has been improved. Selenium on the surface of Se/ZVI was not significantly dissolved even under oxidation conditions by persulfate, and most of it was present in the form of Se/ZVI. It was confirmed that the persulfate activation rate could be controlled by controlling the reactivity of ZVI, which could greatly contribute to the improvement of the persulfate oxidation efficiency.

A case with sarcoidosis mimicking advanced malignancy: A missed clue from past history of uveitis

권희원,차승익,김창호,이재희 대한내과학회 2018 대한내과학회 추계학술대회 Vol.2018 No.1

PD13) 국내 폐금속광산의 지역별 중금속 오염특성 분석

권희원,서정민,배수진,김정진,김영훈 한국환경과학회 2018 한국환경과학회 학술발표회 발표논문집 Vol.2018 No.11

펜톤산화처리를 이용한 오염퇴적토 비스페놀 A 분해연구

권희원,박윤석,김종건,김지영,김영훈 한국퇴적환경준설학회(구 한국환경준설학회) 2021 한국환경준설학회 학술대회논문집 Vol.2021 No.06

불안한 환상, 로맨스

권희원 이화여자대학교 도예연구소 2021 陶藝硏究 Vol.- No.30

This paper aims to study the theory of desire by French psychoanalyst Jacques Lacan to understand the human desire. Based on Lacan’s theory of desire, the researcher now understands one’s own desire. It begins from one’s lack, and one has no choice but to constantly desire for others where one believes one can find within others the thing that can satisfy oneself. Furthermore, through the concept of “object little A”, which is the “lack” itself, and “Jouissance”, which is beyond the reach of pleasure, one can understand and appreciate one’s desire for others cannot be fully satisfied. Lacan also claims that the illusion of subjects can be achieved through art itself, and by art, one can obtain pleasure. So based on Lacan’s argument, the researcher chooses art as a research method. In this context, the researcher focus on an uneasy fantasy of love by expressing an unfulfilled desire and honestly confessing one’s inner state through art. As a place of fantasy, the work become a place where researcher can objectively see oneself which has been extracted from inside by the art as “me as an object.” Also in this paper, the researcher investigates two artists’ life and works of Tracy Emin and Sarah Lucas to effectively express and sense the researcher’s own inner self and desires. This led to the study of how to express desire more frankly and boldly. Most of the researcher’s works borrow body images. In particular, the face becomes an essential factor, which is for the researcher a way to look at “me(herself) as an object.” The faces expressed in the researcher’s work allow the researcher to see herself objectively and think more deeply and understand her own desires. This makes the researcher’s works a place for identifying desires and establishing identity. The work also expresses romance accompanied by the unsettling fantasies which is the title of the book. As such, the researcher’s work process was conducted for the purpose and direction of the study to understand the anxiety of continuing desire. 본 논고는 필자가 끊임없이 좌절에 대한 불안감을 지속하면서도 타자를 사랑하는 것에서부터 기인한다. 필자가 표현하고자 하는 사랑이란 타자를 대상으로 하는 육체적, 정신적 욕망을 의미한다. 연구 과정의 결과물은 도자 매체를 중심으로 다양한 입체 조형 작업을 통해 구현되었으며 주로 비관적인 내용과 환상적인 이미지로 표현된다. 이 꾸준한 작업의 결과물들은 필자의 사랑에 대한 냉소적인 시선과 더불어 끊임없는 관심 또한 보여줄 것이다. 인간의 욕망에 대해서 파악하기 위해 프랑스의 정신분석학자 자크 라캉(Jacques Lacan)의 욕망 이론을 참고하여 연구를 진행하였다. 필자는 라캉의 욕망 이론을 통해 인간의 욕망은 자신의 결여로부터 시작되며, 그것을 만족시켜줄 수 있는 것이 타자에게 존재한다고 믿기에 끊임없이 타자를 욕망할 수밖에 없다는 것으로 스스로의 욕망에 대해서 이해할 수 있게 되었다. 또한 결여 자체를 의미하는 ‘대상 a’와 손에 닿지 않는 향락의 저편인 ‘주이상스’(jouissance) 개념을 통하여, 충족될 수 없음에도 불구하고 타자를 욕망하는 것에 대해 이해하고 자신의 욕망을 인정할 수 있게 되었다. 이어서 라캉은 예술을 통하여 주체의 환상을 펼치며 이를 통해 쾌락을 얻을 수 있다고 주장하는데, 이러한 주장을 근거로 연구 방법으로써 예술을 선택한 것에 대한 당위성을 획득할 수 있었다. 필자는 충족시킬 수 없는 욕망을 예술로 표현하고 내면을 솔직히 고백함으로써 사랑에 대한 불안한 환상을 꺼내어 보고자 한다. 이 환상의 장으로서의 필자의 작품은 ‘대상으로서의 나’를 꺼내어 비로소 제삼자의 모습으로 바라볼 수 있는 지점이 된다. 필자의 작품들은 대부분 신체 이미지를 차용한 형태이다. 작품에 표현된 얼굴들은 필자가 자신을 객관적으로 보고 욕망에 대해서 더욱 깊이 생각하고 이해할 수 있도록 만든다. 이로써 필자의 작품들은 욕망을 파악하고 주체성을 확립하기 위한 장소가 되며, 본고의 제목과 같이 불안한 환상을 동반하는 로맨스에 대해 표현한다. 또한 작업 과정은 계속되는 욕망의 불안함을 이해하고자 하는 연구의 목적과 방향성 속에서 진행되었다.

낙동강 상류 서식 어류의 부위별 중금속 분포 특성

권희원,김영훈,김정진 대한자원환경지질학회 2022 자원환경지질 Vol.55 No.1

Fish that inhabited in the watersheds of Andong, Imha and Yeongju Dam in the upper Nakdong River were analyzed heavy metals by separated into muscle, gill, stomach and liver part. Thirteen fish species such as dark chub, skygager, coreoperca herzi, Korean piscivorous chub, cornet fish, Japan crucian carp, catfish, bass, crucian carp, mandarin fish, carp, long-nosed barbel, Korean sharpbelly were analyzed using ICP/MS. The results of the analysis based on the overall average concentration showed that the muscle part is lower than other parts in all heavy metal items except mercury. The gill part showed high concentrations of chromium, manganese, nickel, and lead, the stomach part has high zinc, and the liver part showed high concentrations of iron, copper, arsenic, and cadmium.

문화예술교육을 통한 일상의 변화와 교육적 의미 탐구 : <문화예술교육론> 수업 사례를 중심으로

권희원,변정은 한국문화교육학회 2018 문화예술교육연구 Vol.13 No.3

The purpose of this study is to explore changes in a daily life through Art & Cultural Education and their educational implications. The individual learners in Art & Cultural Education program experienced emotional abundance and inner. They recalled their past selves and reflected on their present selves, which allowed them to expand their thinking by facing various perspectives and experiences in a community. Flexible thinking and open mindedness based on art & cultural education enlarged the understanding of others, restored the sensitiveness of daily life, and realized art of daily life with an attitude of wide-awakeness. Moreover, the practices of community as ‘an experience' allowed the learners interest to be extended not only to oneself but also to their surroundings, communities, and society, thereby leading to social accountability and the relevant practices. Also, realizing art of daily life is intertwined with the attitudes and quality of life of the learners, and further extends its influences to communities and society as a whole. The suggestions for art & cultural education’s orientations are as follows. First, various programs should be carried out both inside and outside school to foster the aesthetic sense of teachers. Second, practical art & cultural education at a community level should be encouraged so it can be learned as an experience rather than function and knowledge. 본 연구는 문화예술교육 경험이 학습자들의 일상에 어떠한 변화를 가져오는지 살펴보고 그 교육적 의미를 탐구하고자 하였다. <문화예술교육론> 수업에 참여한 수강생을 연구참여자로 선정하여 학습이 지식이해 수준에서 그치지 않고 실천으로 이어질 수 있었던 부분에 주목하여 연구하였다. 연구결과, 문화예술교육 경험은 학습자 개개인에게 정서적 풍요로움과 내적 성장을 가져다주었다. 학습자들은 과거 자신의 모습을 떠올리며 현재의 자신을 성찰하였고, 공동체 안에서 다양한 관점과 경험을 마주하며 사고를 확장시킬 수 있었다. 또한 문화예술교육 경험을 통한 유연한 사고와 열린 마음은 타인에 대한 이해의 폭을 확장시켜주었고 민감성을 회복하여 일상의 예술화를 실현할 수 있게 하였다. 공동체 안에서 ‘하나의 경험’으로서의 문화예술교육 경험은 학습자들의 관심을 자신뿐만 아니라 주변, 공동체, 사회로 확장시켰고, 이는 사회적 책무성과 그에 따른 실천으로 이어질 수 있었다. 이러한 문화예술교육을 지향하기 위해 본 연구에서는 다음과 같이 제언한다. 첫째, 교사들의 미적 소양을 함양시켜줄 수 있는 다양한 프로그램들이 학교 안팎에서 이루어지길 기대한다. 둘째, ‘하나의 경험’으로서 학습될 수 있도록 공동체 단위의 실천적 문화예술교육이 많이 장려되길 제안한다.

PC26) 영가철을 이용한 과황산 활성화 반응에서 활성종에 대한 난분해성 유기물질의 반응성 증가에 대한 연구

권희원,김영훈 한국환경과학회 2018 한국환경과학회 학술발표회 발표논문집 Vol.2018 No.11

BONDING AGENT 변량에 따른 고무 물성과 Textile접착력 변화

권희원,손봉영,윤기용,이계정 한국고분자학회 2000 한국고분자학회 학술대회 연구논문 초록집 Vol.2000 No.4

Removal of arsenic from aqueous phase using magnetized activated carbon and magnetic separation

권희원,T. C. Shin,김정진,하동우,김민규,김영훈 한국초전도.저온공학회 2018 한국초전도저온공학회논문지 Vol.20 No.2

Arsenic (As) is one of the elements having most harmful impact on the human health. Arsenic is a known carcinogen and arsenic contamination of drinking water is affecting on humans in many regions of the world. Adsorption has been proved most preferable technique for the removal of arsenic. Many researchers have studied various types of solid materials as arsenic adsorbent, and iron oxide and its modified forms are considered as the most effective adsorbent in terms of adsorption capacity, recovery, and economics. However, most of all iron oxides have small surface area in comparing with common adsorbents in environmental application such as activated carbon but the activated carbon has weak sorption affinity for arsenic. We have used an activated carbon as base adsorbent and iron oxide coating on the activated carbon as high affinity sorption sites and giving magnetic attraction ability. In this study, adsorption properties of arsenic and magnetic separation efficiency of the magnetized activated carbon (MAC) were evaluated with variable iron oxide content. As the iron oxide content of the MAC increased, adsorption capacity has also gradually increased up to a point where clogging by iron oxide in the pore of activated carbon compensate the increased sorption capacity. The increase of iron oxide content of the MAC also affected magnetic properties, which resulted in greater magnetic separation efficiency. Current results show that magnetically modified common adsorbent can be an efficiency improved adsorbent and a feasible environmental process if it is combined with the magnetic separation.