기상반응법에 의한 질화티타늄 제조

김동현,김동현,김동현,원창환,Kim, Dong-Hyeon,Kim, Dong-Hyeon,Kim, Dong-Hyeon,Won, Chang-Hwan 한국재료학회 1997 한국재료학회지 Vol.7 No.12

TiN은 기상반응법으로 티타늄판과 질소가스의 질화반응에 의해 제조되었다. $\delta$-TiN은 약 1100-140$0^{\circ}C$의 온도 범위에서만 형성되는데 반해, 110$0^{\circ}C$이하의 온도에서는 $\varepsilon$-TiN 상도 관찰할 수 있었다. $\delta$-TiN의 미소정도값은 3000$\pm$300kg/m$m^2$였고, 격자상수는 0.4226$\mu\textrm{m}$였다. 가스의 유동속도가 0.7$\ell$/min의 속도이하에서는 확산과정에 의해 지배됨을 알 수 있었다. 활성화에너지가 110$0^{\circ}C$이상에서는 67.6Kcal/mol이었고 110$0^{\circ}C$이상에서는 13.9Kcal/mol이었던 것으로 보아 반응메커니즘이 110$0^{\circ}C$를 기점으로 변한다는 것을 명백히 관찰할 수 있었다. 그리고 증착속도가 확산과정에 의해 지배되는 영역에서 TiN의 증착속도는 전체 유량의 제곱근에 비례하였다.

Complete genome sequence of Comamonas sp. NLF-7-7 isolated from biofilter of wastewater treatment plant

김동현,한국일,권해준,김미경,김영국,최두호,이근철,서민국,김한솔,이정숙,김종국,Kim, Dong-Hyun,Han, Kook-Il,Kwon, Hae Jun,Kim, Mi Gyeong,Kim, Young Guk,Choi, Doo Ho,Lee, Keun Chul,Suh, Min Kuk,Kim, Han Sol,Lee, Jung-Sook,Kim, Jong-Guk The Microbiological Society of Korea 2019 미생물학회지 Vol.55 No.3

본 연구에서는 폐수처리장의 바이오필터로부터 Comamonas sp. NLF-7-7 균주를 분리하고 유전체서열을 PacBio RS II와 Illumina HiSeqXten 플랫폼을 사용하여 분석하였다. 염색체의 크기는 3,333,437 bp로 G + C 구성 비율은 68.04%, 총 유전자수는 3,197개, rRNA는 9개 및 tRNA는 49개로 구성되었다. 본 유전체는 오염물질분해와 플록형성에 관여하는 황산화 경로 유전자(SoxY, SoxZ, SoxA 및 SoxB)와 플록형성 경로 유전자(EpsG, EpsE, EpsF, EpsG, EpsL 및 glycosyltransferase)를 포함하고 있다. 이러한 Comamonas sp. NLF-7-7 균주는 폐수를 정화하는데 활용될 수 있다. Comamonas sp. NLF-7-7 was isolated from biofilter of wastewater treatment plant. The whole-genome sequence of Comamonas sp. NLF-7-7 was analyzed using the PacBio RS II and Illumina HiSeqXten platform. The genome comprises a 3,333,437 bp chromosome with a G + C content of 68.04%, 3,197 total genes, 9 rRNA genes, and 49 tRNA genes. This genome contained pollutants degradation and floc forming genes such as sulfur oxidization pathway (SoxY, SoxZ, SoxA, and SoxB) and floc forming pathway (EpsG, EpsE, EpsF, EpsG, EpsL, and glycosyltransferase), respectively. The Comamonas sp. NLF-7-7 can be used to the purification of wastewater.

김연아 선수의 ``값진 준우승``: 2011세계피겨선수권대회 관련 보도의 서사구조와 이데올로기

김동현 ( Dong Hyun Kim ) 한국스포츠정책과학원(구 한국스포츠개발원) 2012 체육과학연구 Vol.23 No.1

This study looks into the narrative structure of newspaper media on ``precious winning of the second prize`` of Yuna Kim in the World Figure Championships 2011 and analyzes the socio-cultural ideology representation in it. Also, from the way how the media describe the sports celebrity, the study attempted to read the unique cultural pattern of medias to conserve the fame and marketability of sports celebrity, For the analysis, this study selected 82 news articles from 5 different newspapers right before and after the world Figure championships 2011, and derived the conclusion by using narrative analysis method. The narrative structure is divided into four states: ``waiting for return of queen``, ``the figure queen returns``, ``precious winning of the second prize`` and ``retake of crown through figure`` In each state, medias, in accordance with the narration through a reflection of her successful discourse on national identity, through the identification with the nation, through the nationalism sentiment, through her unconditional patriotism, actively gave an effort to maintain the fame and marketability of Yuna Kim. The chief topic of this research, Korean Figure Skater Kim Yuna`s ``precious winning of the second prize``, is resulted from the integration of her unconditional patriotism grounded on nationalism having an inseparable relationship with sports. 이 연구에서는 2011세계피겨선수권대회 김연아 선수의 ``값진 준우승``을 둘러싼 신문기사의 서사구조와 그 안에서 재현되는 사회적 가치체계 분석을 통해 미디어가 스포츠 명사를 묘사하는 방식을 살펴보고, 필요에 따라 스포츠 명사들의 유명세 및 상품성을 보존하고자 하는 미디어의 전개방식과 특징적인 문화적 패턴을 읽어 내고자 하였다. 이를 위해 5개의 신문사 가운데, 2011세계피겨선수권대회 전과 후에 김연아 선수와 관련된 82개의 신문기사를 분석대상으로 사용하였으며, 서사분석법을 이용하여 결론을 도출하였다. 서사구조는 ``여왕의 귀환을 기다림``, ``돌아온 피겨여왕``, ``값진 준우승``, ``피겨를 통한 여왕으로 재등극``의 네 가지 국면으로 분석하였으며, 각 국면에서의 미디어는 서사의 흐름에 따라, 때로는 그녀의 성공적 담론에 국가정체성을 중첩시키려는 시도를 통해, 때로는 국가와의 동일시를 통해, 때로는 민족주의적 정서를 통해, 때로는 그녀의 맹목적 애국심을 통해 그녀의 유명세 및 상품성을 유지하는데 적극적으로 작용하고 있음을 보여준다. 마지막으로 이 연구의 주요논제인 김연아 선수의 ``값진 준우승``은 스포츠와 불가분의 관계를 유지하고 있는 민족주의를 기반으로 한 그녀의 맹목적 애국심이 융합되어 나타난 결과라고 할 수 있다.

슬러지 폐기물을 활용한 반도체급 균일한 콜로이달 실리카 나노입자의 제조 및 CMP 응용

김동현,김지원,제갈석,김민정,김하영,김민상,김상춘,박선영,윤창민,Kim, Dong Hyun,Kim, Jiwon,Jekal, Suk,Kim, Min Jeong,Kim, Ha-Yeong,Kim, Min Sang,Kim, Sang-Chun,Park, Seon-Young,Yoon, Chang-Min 유기성자원학회 2022 유기물자원화 Vol.30 No.3

This study suggests the effective recycling method of sludge waste from various industrial fields to synthesize uniform colloidal silica nanoparticles. In detail, polymers are removed from the sludge waste to attain sludge-extracted silica (s-SiO₂) micron-sized particles, and ammonia assisted sonication is applied to s-SiO₂, which has effectively extracted the silanol precursor. The nano-sized silica (n-SiO₂) particles are successfully synthesized by a typical sol-gel method using silanol precursor. Also, the yield amounts of n-SiO₂ are determined by the function of s-SiO₂ etching time. Finally, n-SiO₂-based slurry is synthesized for the practical CMP application. As a result, rough-surfaced semiconductor chip is successfully polished by the n-SiO₂-based slurry to exhibit the mirror-like clean surface. In this regard, sludge wastes are successfully prepared as valuable semicondutor grade materials.

초등 과학영재 수업에서의 언어적 상호작용 사례 분석

김동현 ( Dong Hyun Kim ),김효남 ( Hyo Nam Kim ) 한국과학교육학회 2011 한국과학교육학회지 Vol.31 No.8

The purpose of this study was to analyze and extract the features of verbal interactions between teacher and science-gifted students in their classes. For the purpose of this study, authors observed 27 elementary science classes for the science gifted of three elementary teachers. To analyze the verbal interactions in the classes, the authors have adopted the theoretical background, which was based on Sinclair & Coulthard`s Initiative-Response- Feedback pattern. Verbal interactions in the classes were analyzed by Kim`s framework, which modified Jeong`s framework. IRF patterns were derived from the verbal interactions of science classes for the science gifted. As a result, authors obtained some important features in IRF pattern. The most commonly used IRF pattern was the teacher`s managerial question-student`s short answer pattern, which was due to the regional policy for the science gifted. The teacher`s delayed feedback as well as the teacher`s question was meaningful for student`s thinking ability. If elementary teachers consider the pattern, the strategy should be applied, which is depending on student levels and levels of contents. But three teachers did not show the characteristic verbal interaction regarded as a pattern strategy. In the future, inservice programs about verbal interaction are needed for the science gifted classes.

새로운 계열의 선택적 COX-2 저해제: Luotonin A 동족체 및 그 질소 유도체

김동현,량경록,오준석,장영동,김진철,홍태균,황남경,정환기,김윤경,장현욱,Kim, Dong-Hyeon,Liang, Jing-Liu,Oh, Joon-Seok,Jahng, Yurng-Dong,Kim, Jin-Cheul,Hong, Tae-Gyun,Hwang, Nam-Kyung,Chung, Hwan-Ki,Kim, Yun-Kyung,Chang, Hyeun-Wook 대한약학회 2007 약학회지 Vol.51 No.5

A series of luotonin A homologues and their aza-analogues were prepared and evaluated their inhibitory activities on COX-1 and 2 as well as their selectivities on COX-2. The aza-analogue of dimethylene-bridged homologue of luotonin A, 3,3'-dimethylene-2-(1',8'-naphthyrid-2'-yl)-4(3H)-quinazolinone (2b), exhibited strongest inhibitory activity against COX-1 and COX-2 dependent phase of prostaglandin $D_2$ generation in mouse bone marrow-derived mast cells in a concentration-dependent manner with an $IC_{50}$ of 39.3 and $1.89{\mu}M$, respectively. Selectivity of 2b on COX-2 over COX-1 was 21 which implied 2b can be a potential lead for the development of selective COX-2 inhibitor.

일반논문 : 공간 인식의 로컬리티와 서사적 재현양상 -『화산도』와 『지상에 숟가락 하나』를 중심으로-

김동현 ( Dong Hyun Kim ) 한민족문화학회 2016 한민족문화연구 Vol.53 No.-

이 글의 목적은 김석범의 『화산도』와 현기영의 『지상에 숟가락 하나』를 중심으로 지역에서의 공간 인식의 양상과 서사적 재현 방식을 살펴보는 것이다. 『화산도』는 이방근과 남승지라는 두 인물을 중심으로 제주 4·3의 전사(前史)와 그 이후의 이야기를 폭넓은 시각으로 다루고 있다. 이 소설의 또 다른 주인공은 바로 거리들이다. 소설은 칠성로와 관덕정을 중심으로 한 성내의 거리를 배경으로 진행된다. 남문로를 거슬러 올라가 자리잡은 유달현의 집이나, 서문교 건너 박산봉의 집, 북국민학교 뒤편의 이방근의 집, 동문다리를 건너 측후소를 조금 지나 자리 잡은 양준오의 집 등 소설 속 인물들 공간은 모두 성내를 중심으로 포진하고 있으며 인물들은 이 거리를 오고 간다. 그리고 이 거리의 풍경들은 매우 구체적으로 그려지고 있다. 『화산도』는 지역의 장소성을 전면에 부각시킴으로써 서사적 구성을 완성시키고 있다. 제주 4·3을 소설로 형상화하면서 김석범이 선택한 전략은 공간의 구체성을 극대화하는 전략이었다. 『화산도』는 해방기 제주를 상상함에 있어 지역의 구체적 장소성으로 지역을 소환하고, 지역을 상상적으로 재구성하고 있다. 현기영에게 있어 관덕정 광장은 섬 공동체가 지니고 있었던 저항 정신의 생산지이다. 장두 이재수에서부터 시작하여 산군 대장 이덕구에 이르기까지 제주의 장두정신은 관덕정 광장이라는 구체적 공간을 무대로 하여 현재와 마주하고 있다. 현기영은 『지상에 숟가락 하나』에서 한걸음 더 나아가 관덕정 광장을 제주 섬 공동체의 신화의 몰락과 반공국가로의 폭력적 편입 과정의 구체적 장소로 지목하고 있다. 관덕정 광장에 전시된 이덕구의 시신이라는 역사적 사실을 현기영은 ‘관권의 불의에 저항한 섬 공동체의 신화의 몰락’으로 인식한다. The purpose of this article is intended to examine the appearance and narrative reproduction method of spatial awareness in the region around 『The Spoon One on the Ground』 and 『Volcano Island』 Kim-suk bum``s 『Volcano Island』 describes the wide-ranging, history of Jeju 4.3 incident through two figures, Lee-Bang-guen and Nam-seung-gee. Another hero of this novel is just street. Novel is proceeding against the background of the distance of the castle with a focus on Chilsung-Ro and Gwandeokjeong. People our space in the novel has been lineup all around the Jeju castle, person, back and forth this distance. And scenery of this city is very specifically drawn. 『Volcano Island』 is to complete the epic structure by levitate the location of the area in front. Gwandeokjeong Square is the spirit of the production area of resistance that community of the island had to Hyun Gi-young. Until To Lee duck-goo starting from Lee Jae-su, spirit of Jeju have to stage a concrete space that Gwandeokjeong Square. Hyun Gi-young is further singled out the Gwandeokjeong Square and downfall and the specific location of violent incorporation process as anti-state of Jeju Island mythology.

GaAIAs 레이저 조사가 흰쥐 창상부위 상피조직의 EGF 발현에 미치는 영향

김동현,백수정,배주한,김석범,권영실,김진상,Kim, Dong-Hyun,Baek, Su-Jeong,Bae, Ju-Han,Kim, Suk-Bum,Kwon, Young-Shil,Kim, Jin-Sang 대한물리치료학회 2001 대한물리치료학회지 Vol.13 No.3

This study was performed. using EGF, to observated the effect of GaAIAs laser on wound model induced designedly in lumbar region. The results of this study were as following: 1. In expression of EGF which used marker of wound healing, laser irradiating group made EGF to more induce significantly than laser non-irradiating group at 3 days. 2. EGF immunoreactivity in epidermis were increased markedly 3 days after wound, and increased gradually from 1 day to 2 days in wound which is laser irradiation. Therefore, EGF immunoreactivity which increased after wound with GaAIAs laser irradiation indicate that GaAIAs laser have wound healing effect. This study also can become a part of scientific evidence on electrotherapy through measuring quantitively effects of GaAIAs laser in wound

하이덴하인 변형 크로이츠펠트-야콥병 1예

김동현,김상윤,양영순,정성해,김지수,황정민,Dong-Hyun Kim,Sang Yun Kim,Young Soon Yang,Seong-Hae Jeong,Ji Soo Kim,Jeong-Min Hwang 대한안과학회 2008 대한안과학회지 Vol.49 No.9

Purpose: To report a case of the Heidenhain variant of sporadic Creutzfeldt-Jakob disease (CJD), predominantly characterized by visual impairment at onset. Case summary: History-taking, ophthalmologic examination, neurologic examination, cerebrospinal fluid examination including 14-3-3 protein analysis, and brain MRI were performed in a 48-year-old man with progressive visual loss and a visual field defect. These symptoms were accompanied by visual illusion and macropsia. Neurologic examination revealed relatively rapidly progressing cognitive impairment, ataxia, aphasia, and myoclonus. The 14-3-3 protein was detectable in otherwise normal CSF samples. The diffusion weighted brain MRI showed increased signal intensity in both occipital lobes, the basal ganglia, the temporal and frontal lobes. He was clinically diagnosed as having a Heidenhain variant of sporadic CJD. Conclusions: In a patient with a rapidly progressive visual loss, visual field defects, visual illusion, and neurologic abnormalities including progressive dementia, ataxia, aphasia, and myoclonus, the Heidenhain variant of CJD should be considered. Because prions, a cause of CJD, exhibit unusual resistance to conventional chemical and physical decontamination methods, it is necessary to have an appropriate management scheme to prevent the spread of infection. J Korean Ophthalmol Soc 2008;49(9):1548-1552

간 질환력과 원발성 간암에 관한 환자-대조군 연구

김동현,박병주,유근영,안윤옥,이효석,김정룡,이상일,이무송,안형식,김헌,박태수,Kim, Dong-Hyun,Park, Byung-Joo,Yoo, Keun-Young,Ahn, Yoon-Ok,Lee, Hyo-Suk,Kim, Chung-Yong,Lee, Sang-Il,Lee, Moo-Song,Ahn, Hyung-Sik,Kim, Heon,Park, Tae-Soo 대한예방의학회 1994 Journal of Preventive Medicine and Public Health Vol.27 No.2

The relationship between past liver disease history and the risk of primary liver cancer was analyzed in a hospital-based case-control study conducted in Seoul on 165 patients with histologically or serologically confirmed hepatocellular carcinoma and individually age- and sex-matched 165 controls in hospital for ophthalmologic, otologic, or nasopharyngeal problems. Significant association were observed for liver deseases occurring 5 or more years before liver cancer diagnosis [OR,4.9;95% confidence interval (CI), $1.6{\sim}14.0$) and family history of liver disease(OR, 9.0;95% CI, $2.1{\sim}38.8$). These associations were not appreciably modified by allowance for major identified potential confounding factors. From these results, it is possible to speculate that liver cell injuries caused by various factors might be a common pathway to developing primary liver carcinoma. Considering the significant effect of family history of liver diseases on PLCA risk after adjusting past liver disease history, there might be genetic susceptibility in the carcinogenic mechanism of liver cancer. Further investigations are needed to clarify the effect of family history of liver disease on PLCA risk.