백색광 LED를 사용한 독서등의 최적 색온도에 따른 사람의 시력 변화 연구

김주현,장원범,이석환,정광교,김동현,김정미,류재준,문성득,이승현,고영수,허산,장미나,정창호,장지호,Kim, Juhyun,Chang, Wonbeom,Lee, Seokhwan,Jung, Kwangkyo,Kim, Donghyun,Kim, Jeongmi,Ryu, Jaejun,Moon, Seongdeuk,Lee, Seunghyun,Ko, Youngsu,Huh, Sa 한국전기전자재료학회 2013 전기전자재료학회논문지 Vol.26 No.1

White light emitting diode (LED) determined the most appropriate color temperature in reading lighting evaluated fatigue degree of eye according to color temperature. The eye fatigue degrees are determined by brightness and color temperature. Therefore, we measured the results of eyes test according to the change of color temperature and brightness. Experiments except for astigmatic corrected visual acuity of 0.8 more and age 20 to 25 years old, male and female college students was conducted in 100 patients. And constant illumination conditions, visual acuity was measured by varying the color temperature. The optometry at 10 minutes in the darkroom adapted eye. And then the temperature of $25{\pm}3$ degrees, the humidity was carried out at $50{\pm}5%$. As a result of typical color temperature of white light (5,600 K) has identification of the readability.

Complete genome sequence of Lactobacillus koreensis 26-25, a ginsenoside converting bacterium, isolated from Korean kimchi

김주현,류청매,스리니바산 사티야라지,김명겸,김상용,위지향,임완택,Kim, Ju-Hyeon,Liu, Qing-Mei,Srinivasan, Sathiyaraj,Kim, Myung Kyum,Kim, Sang Yong,Wee, Ji-Hyang,Im, Wan-Taek The Microbiological Society of Korea 2018 미생물학회지 Vol.54 No.4

A Gram-positive, rod-shaped, ivory colored, and motile, Lactobacillus koreensis 26-25 was isolated from Korean kimchi. Strain 26-25 showed the ability of conversion from major ginsenosides into minor ginsenosides for which whole genome was sequenced. The whole genome sequence of Lactobacillus koreensis 26-25 consisted of one circular chromosome comprised of 3,006,812 bp, with a DNA G + C content of 49.23%. The whole genome analysis of strain 26-25 showed many glycosides hydrolase genes, which may contribute to identify the genes responsible for transformation of major ginsenosides into minor ginsenosides for its high pharmacological effects. 김치로부터 분리한 Lactobacillus koreensis 26-25 균주의 유전체서열을 분석하였다. 균주 26-25의 유전체는 G + C 비율이 49.23%이며, 2,720개의 유전자와 2,556개의 단백질 코딩 유전자, 85개의 위유전자 그리고 78개의 RNA 유전자를 포함한 단일 원형 염색체로 구성되었으면 그 크기는 3,006,812 bp였다. 균주 26-25는 인삼사포닌의 당 분해에 관여하는 여러 타입의 글라이코시다제 유전자를 가지고 있었다. 이러한 지놈 분석은 주요 진세노사이드가 우수한 약리학적 활성의 미량 진세노사이드로 전환하는데 관여하는 유전자 특징을 이해하는데 큰 기여가 되었다.

타이탄의 고분산 스펙트럼

김주현,김상준,김강민,심채경,손동훈,KIM JOO HYEON,KIM SANG JOON,KIM KANG-MIN,SIM CHAE KYUNG,SON DONG HOON 한국천문학회 2004 天文學論叢 Vol.19 No.1

We have carried out the high-resolution spectroscopic observations of Titan using BOES (Bohyunsan Echelle Spectrometer) to establish a standard spectral atlas of Titan. The observations were made on November 3, 4, 16 and 17, 2003 using a 300 11m fiber optics with a spectral resolving power of 30,000. The spectral atlas will be served as a reference for the future spectroscopic researches of Titan and other planetary objects. We were able to confirm $CH_4$ absorption lines of the Kuiper bands, and find unidentified lines near $7500{\AA}$.

Achalasia의 외과적 치료

김주현,Kim, Ju-Hyeon 대한흉부심장혈관외과학회 1979 The Korean Journal of Thoracic and Cardiovascular Vol.12 No.2

Eophagocardiomyotomy (modi/red Heller procedure) is a widely accepted operation for relief of dysphagia in patients with esophageal achalasia. But patients with advanced achalasia were more likely to get poorer results from a modified Ileller myotomy hecause of the dependent pouch that creates an angulation at the junction of thick-walled dilated esophagus with the thin walled aganglionic segment and hinders complete emptlllg. Thorhjarnarson(1975) prposcd the method including truncal vagectomy and pyloroplasty. Vagectomy and pyloroplasty should lesson the severity of acid-peptic esophagitis, if reflux should occur postoperatively. Here we presented 4 cases esophageal achalasia treated by modified Heller operation of 3 cases and one case of Thorbjarnarson method. All postoperative results are good.

블로그에 의한 유전자변형식품 홍보와 교육 효과

김주현,김혜영,Kim, Juhyeon,Kim, Hae Young 한국식품조리과학회 2016 한국식품조리과학회지 Vol.32 No.6

Purpose: The objective of this study was to determine the effects of genetically modified (GM) food promotion and education through the blog. Methods: Education program for consumer-oriented GM foods by the blog was developed and survey was performed by the visitors for totals of twelve weeks. The blog was formed by information (definition, mark etc.) offering style and named as "Correct knowing of genetically modified organisms (GMO)." Event was held to enhance the promotion of the blog from the week 9 to week 12. Results: Visitors of the final week increased 4 times, as compared to those of the starting the event week 9. Most of the 138 consumers (94.5%) did not have prior GMO education experience. The 97 consumers aged 20 years old showed significantly the highest ratios in the experience of blog or website (p<0.01). Comparing before and after the blog education, notification on GM foods and willingness to buy GMO products, the benefit of GMO, willingness to check GMO mark when buying GMO products showed positive change of GM foods (p<0.05). Conclusion: Over 80% answered that the blog helped to understand the GM foods. Thus, we conclude using blog is effective way of GM food promotion and education and continuous efforts are needed to maintain an active blog for the consumer's rights of knowledge about GM foods.

분무열분해공정에 의한 메조기공 알루미나 제조에 있어 Al 전구체 영향

김주현,정경열,박균영,Kim, Joo-Hyun,Jung, Kyeong-Youl,Park, Kyun-Young 한국분말야금학회 2010 한국분말재료학회지 (KPMI) Vol.17 No.3

Mesoporous alumina particles were prepared by spray pyrolysis using cetyltrimethyl-ammonium bromide (CTAB) as a structure directing agent and the effect of Al precursor types on the texture properties was studied using $N_2$ adsorption isotherms, small-angle X-ray scattering (SAXS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The surface area and the microstructure of alumina particles were significantly influenced by the Al precursor type. The largest BET surface area was obtained when Al chloride was used, whereas alumina particles prepared from Al acetate had the largest pore volume. According to small-angle X-ray scattering (SAXS) analysis, the alumina powders prepared using nitrate and acetate precursors had a clear single SAXS peak around $2{\theta}=1.0{\sim}1.5^{\circ}$, indicating that regular mesopores with sponge-like structure were produced. On the basis of TEM, SAXS, and $N_2$ isotherm results, the chloride precursor was most profitable to obtain the largest surface area ($265\;m^2/g$), whereas, the nitrate precursor is useful for the preparation of non-hollow mesoporous alumina with regular pore size, maintaining high surface area (${\sim}233\;m^2/g$).

단재 전집 간행과 문학편의 문제점 고찰

김주현(Joo-Hyeon Kim) 독립기념관 한국독립운동연구소 2008 한국독립운동사연구 Vol.0 No.30

이제까지 단재 작품들을 발간하기 위한 여러 시도가 있었다. 단재의 유고는 처음 북한에서 선집으로 빛을 보았다. 안함광 등은 단재의 유고를 정리하여 룡과 룡의 대격전 (1966)을 발간하였다. 남한에서는 단재신채호전집간행위원회가 발족되어 1972년 단재신채호전집 상 · 하를, 1975년에는 〈보유〉를 발간하였으며, 1977년에 상 · 중 · 하 · 별집 4권으로 개정판 전집을 완성하였다. 개정판은 그 이전의 전집에 실린 작품들의 소재를 분명히 하고, 또한 북한에서 나온 용과 용의 대격전 의 원고를 모두 싣는가 하면, 대한매일신보 논설 등을 광범위하게 채집하여 수록하였다. 그런데 자료에 대한 제대로된 검증과정 없이 묶이다 보니 이후 여러 작품이 저자 논란에 휩싸이게 된다. 이 글에서는 「천희당시화」를 비롯하여 대한매일신보소재 작품과 「단기고사중간서」, 「고락유수」 등의 저자 문제를 살펴보았다. 그리고 찾아야 할 단재의 글로 황성신문 등 6개 신문과 천고 등 2개 잡지를 살펴보았다. 또한 단재 문학의 규모를 점검하여 보았다. 북한에서 나온 선집과 김병민이 편한 신채호문학유고선집 을 중심으로 하여 여기에 빠진 작품들을 점검하였다. 그리고 북한에 있는 미발표 유고와 최근 새롭게 발굴된 소설, 시 등의 작품을 언급했다. 새로 발간되는 전집은 이전 전집의 문제점을 보완하는 것이 무엇보다 시급하다. 우선 확실한 작품들과 새로 발견된 작품들을 싣고, 논란이 되는 작품은 가능하면 배제하는 것이 마땅할 것이다. 그런 작품들에 대해서는 향후 저자 확정작업이 요구된다. 박정규의 언급처럼, 당시의 기록이나 사료를 바탕으로 보다 체계적이고 과학적인 분석이 이뤄져야 한다. 텍스트 연구가 충분히 이뤄지고 나서 학문적 판단이 내려져야 한다. 앞으로 북한의 유고가 유입되어 보다 많은 자료가 확보되고, 또한 저자 확정작업이 지속되어 보다 완전한 단재 전집이 꾸려지길 기대해 본다. It was tried many times to publish Danjae’s works so far. His posthumous works were published as a selection in North Korea for the first time. Ham-Gwang Ahn and others put his posthumous works in good order and published “The great fierce battle between dragons” in 1966. The committee for the publication of Danjae Shin Chae Ho’s complete collection was set up in South Korea and published “Danjae Shin Chae Ho’s complete collection” composed of 2 volumes in 1972 and published its supplement in 1975, and accomplished “Revised edition of Danjae Shin Chae Ho’s complete collection” composed of 4 volumes including a separate volume. The revised edition made the position of the works put in the former complete collection clear, and included the manuscript of “The great fierce battle between dragons” and the editorials in “Daehanmaeilsinbo - a newspaper” and others collected extensively. But as the revised edition included materials without proper verification, lots of works included in the collection were seized in dispute about the authorship. In this article, I studied the authorship of “Cheonheedangsihwa”, the works published in “Daehanmaeilsinbo”, “Preface to Republication of Danggigosa, a chronicle of ancient Korea” and “Gorakyoosoo”. And I examined 6 newspapers including “Hwangseongsinmoon” two magazines including “Tienku” in order to find out Danjae’s works. I examined Danjae’s literature scale, too. I checked his works which were not included in the selection published in North Korea and “Shin Chae Ho’s posthumous literary selection” compiled by Byeong-Min Kim. And I mentioned his unpublished posthumous manuscripts in North Korea and his novels and poems which were found out recently. Above all, it is urgent that his complete collection being newly published should make up for the weakness of the former complete collection. First of all, it will be proper to include his works that were confirmed and works newly discovered in his complete collection and exclude the controversial works if possible. It is required to confirm the authorship of such works hereafter. As Jeong-Gyu Park mentioned, systematic and scientific analysis is required on the basis of records and historical materials at that time. Academic decision should be passed after the thorough study of the text. I hope that his posthumous manuscripts in North Korea will inpour to South Korea and lots of his materials will be secured. And I hope that work to confirm the authorship will be maintained and perfect “Danjae’s complete collection” will be published.

식도 자연천공 치험 1례

김주현,김영태,Kim, Ju-Hyeon,Kim , Yeong-Tae 대한흉부심장혈관외과학회 1978 Journal of Chest Surgery (J Chest Surg) Vol.11 No.2

Twenty-two years old male was operated for spontaneous rupture of the esophagus. In the event of perforation, there is nothing to prevent wide spread dissemination, and a devastating necrotizing chemical insult occurrs which is rapidly complicated by anaerobic and aerobic infection which quickly jeopardizes the patient`s life, often with a fatal result. For these reasons and despite modern diagnostic aids, anesthetic and operative technics, and antibiotics, perforation of the esophagus is still an alarming accident. In this case, thoracotomy and surgical closure of the perforation resulted in satisfactory outcome except postoperative fistula, which healed spontaneously.

특집: 유기광.전자 소재 및 소자 기술 - 유기발광전자 소재 및 소자 기술

김주현,강재욱,Kim, Ju-Hyeon,Gang, Jae-Uk 재료연구소 2011 機械와 材料 Vol.23 No.2

공액 이중결합으로 이루어져 있는 유기 화합물을 형광체로 이용하는 유기발광 소자는 최근 모바일용 디스플레이의 사용화를 시작으로 TV, PC용 디스플레이, 플렉시블 디스플레이로의 사용화에 대한 관심을 불러일으키고 있다. 본 글에서는 지금까지 개발된 다양한 기능성 소재 및 발광 소재에 대하여 소개 하고자 한다.

입자론의 관점에서 본 확산과 용해 개념에 관련된 과학 교과서 및 인터넷 자료 분석과 컴퓨터 수업 보조자료의 개발

김주현,이동준,김선경,강성주,백성혜,Kim, Ju Hyun,Lee, Dong Jun,Kim, Sun Kyoung,Kang, Seong Joo,Paik, Seong Hey 대한화학회 2000 대한화학회지 Vol.44 No.6

이 연구에서는 확산과 용해에 관련된 3~12학년의 과학교과서와 여러 문헌 자료들, 인터넷 사이트들을 분석하였다. 이 자료들로부터, 교과서에 제시된 확산과 관련된 설명들이 용해, 상태변화, 분출과 혼동되어 사용되고 있었으며 매질과의 충돌 또한 고려되고 있지 않았다는 것을 알았다. 그리고 용해와 관련된 거의 모든 자료도 용해의 원리를 인력에 의한 영향으로 설명하지 못하고 있었으며, 거의 대부분 용해에 관한 설명이 개념의 이해보다는 계산 문제 풀이에 초점이 맞추어져 있었다. 또한, 각종 인터넷 사이트들도 단편적인 교과서의 나열 수준에서 벗어나지 못하였고 단지 시청각적인 효과에 치중하고 있었다. 화학이 입자론적 관점에서 자연현상을 이해해야 함에도 불구하고 대부분의 교과서와 인터넷 사이트들은 그것을 충분히 반영하지 못하고 있었다. 이에 이 연구에서는 올바른 과학적 개념을 형성하고 입자론적인 관점에서 미시세계를 거시적 자연현상과 연결시키고자 했다. 그 방법으로 움직이는 물체를 표현할 수 있는 컴퓨터의 장점을 최대한 활용하여 입자이동의 관점으로 확산과 용해와 관련된 수업보조자료를 개발하였다. In this study we analysed 3-12 grade science textbooks, many literatures and internet sites related to diffusion and dissolution concepts. From these data, we discovered that the explanations of diffusion that used in textbooks are not considered the site of collision with mediums, and confused with dissolution, state transition and effusion. In the case of dissolution, almost analysis data were short of the explanations of interaction effect. Most of all, the focus of dissolution explanations was to solve the calculation problems rather than to understand the concept. Every internet site was poor, just as the level of showing textbook contents with computer, so the only effect of using computer was the sense of sight and hearing. Chemistry must be understood nature phenomena with a view point of particle theory, but many textbooks and Internet sites didn't represent it sufficiently. We set up the correct scientific concept and linked micro world of particle theory with macro world of nature phenomena. With a use of computer which have the advantage of representing moving things, we developed the computer-assisted instruction programs related to diffusion and dissolution with the viewpoint of particle movement.