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Crocin 첨가 결핵균 배지상의 색소형성에 의한 비정형 Mycobacteria 의 분류
이현수,김재학,윤용덕,최철순,이택주 대한미생물학회 1974 大韓微生物學會誌 Vol.9 No.1
On the basis of pigment production and growth rate on L-J medium containing crocin, differentiation of opportunist mycobacteria belonging to photochromogens, scotochromogens, nonchromogens and rapid grower has been investigated. Among photochromgens, positive pigmentation of M. kansasii was differentiated from negative strain of M. marinum. Scotochromogen M. aquae was positive whereas M. scrofulaceum was negative. Rapid grower M. fortuitum was positive at 3 days test whereas M. smegmatis was negative. Subdivision of opportunist mycobacteria into four groups on the basis of growth rate ad pigment production on L J medium containing gardenia extraction appeared to be a valuable adjunct to the Runyon's classification for the rapid presumptive identification of opportunist mycobacteria of different clinical significance.
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Synthesis of Sphene (CaSnSiO5)-Pink Pigments with CrCl₃
이현수,이병하 한국세라믹학회 2009 한국세라믹학회지 Vol.46 No.4
In high temperature ceramic glazes, a stable range of pink-red colors that produced Cr₂O₃-SnO₂-CaO-SiO₂ pigments were factored by Cassiterite(SnO₂) and Malayaite(CaSnSiO5) by Cr₂O₃. The experiment examined the influence of CrCl₃, a Sn-Cr substitution added with a mineralizer (H₃BO₃), as a chromophore in pigments. The experiment also studied the effect of H₃BO₃ (2 wt%) when added to malayaite(CaSnSiO5) to see if the crystalline reaction will increase. Cr₂O₃ was also substituted with CrCl₃ in order to prove how much influence CrCl₃ had on the H3BO3. Malayaite and cassiterite were the basic compound materials and the experiment was conducted both with and without mineralizers (2 wt% of H₃BO₃).Each compound was synthesized at 800, 1000, 1200, 1300, 1400, 1500℃ for 2 h. Synthesized pigments were analyzed by XRD, FT-IR and UV-Vis. The temperature variation produced two crystal phases that showed the different engaging effects of Cr oxidation. CrCl₃ produced a better effect on the malayaite crystal phase, resulting in a more defined pigmentation of the pink-red coloration compared to Cr₂O₃.
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팽창재 및 수축저감제가 강섬유보강 초고성능 시멘트 모르터의 기초적 특성과 수축저감에 미치는 영향
이현수,박문서,한천구,한동엽 대한건축학회 2006 大韓建築學會論文集 : 構造系 Vol.22 No.12
The toughness increased concrete produced by mixing steel fibers, is called Ultra High Performance Concrete (UHPC). This type of concrete, yet, is concerned about autogenous shrinkage in addition to drying shrinkage from low water-binder ratio. In this study, therefore, it is tested if the steel fiber can reduce the shrinkage of UHPC. Additionally, a test to reduce the shrinkage of UHPC using Expanding Admixture (EA) and Shrinkage Reducing Agent (SRA) is conducted. As a result, it is found that EA and SRA can reduce the shrinkage while the steel fibers lead increase of shrinkage. For EA, however, the shrinkage is increased at the initial age. Consequently, through this study, it is recommended to mix both 5% of EA and 1% of SRA for UHP mixed with 2% of steel fibers. This case will reduce drying shrinkage to 59% and autogenous shrinkage to 79% compared to the case not mixing the EA and the SRA.
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UN 지속가능발전 목표 16의 세부목표 7에 따른 공적 결정의 과제
이현수 한국공법학회 2018 공법연구 Vol.47 No.1
The United Nations declared 17 goals for sustainable development in 2015, and stated, in particular, “Promote peaceful and inclusive societies for sustainable development, provide access to justice for all and build effective, accountable, and inclusive institutions at all level” as the 16th goal. In addition, 12 targets are defined for goal 16 as a sub-goal, among which target 7 states, “Ensure responsive, inclusive, participatory and representative decision-making at all levels.” Republic of Korea, a member of the United Nations, has also established the Green Growth Act and the Sustainable Development Act to establish a basic plan for sustainable development at the central and local levels. It also stipulated consultation and coordination procedures between the two plans. We also introduced the Sustainability Assessment System and set up the Sustainable Development Committee to make comments on the policy. As a fundamental way in which the public law system responds to the sustainable development agenda, there are proposals to reform the system of anthropocentrism and present-mindedness to take into account the interests of nature and future generations. At the Constitutional level, diverse constitutions of the National Assembly, restructuring of the administration to represent the interests of future generations, and the enactment of the ecological constitution, which declares the legal personality of nature, are attempted. Regarding the responsiveness in the public decision making process, the problem of harmonization between the planning discretion of the administration related to the land and binding effect of the local referendum can be highlighted as an administrative law issue. With regard to the inclusiveness of public decision, there are several problems of guaranteeing the ex ante and ex post procedures in foreigner related administrative activities. Regarding participatory decision-making, classical public law themes such as freedom of speech, freedom of assembly, and transparency of state administration is being illuminated again as a minimum requirement of participation. 유엔은 2015년 17개의 지속가능발전목표를 선언하였는데, 특히 “지속가능발전을 위해 평화롭고 포용적인 사회를 확대하고, 누구나 정의에 접근할 수 있게 하며, 모든 단계에서 효과적이고 책임성 있으며 포용력 있는 제도를 구축함”을 목표 16으로 선언하고 있다. 또한 목표 16을 위한 12개의 세부목표를 선언하고 있는데, 그 가운데 세부목표 7은 “반응성과 포용성을 갖추고, 참여적이고 대표성 있는 의사결정을 모든 차원에서 확보할 것”을 선언하고 있다. 우리나라는 유엔 지속가능발전의제에 대한 화답으로서 녹색성장법, 지속가능발전법을 제정하여 중앙과 지방 차원의 지속가능발전기본계획 수립의무, 두 계획간의 협의와 조정, 지속가능발전지표에 따른 지속가능평가제도 등을 도입하였으며 지속가능발전위원회를 설치하여 정책에 대한 의견제시를 할 수 있게끔 하였다. 각국의 공법질서가 유엔의 지속가능발전 의제에 조응하는 근본적인 방도로서, 기존의 인류 중심적이고 현재 중심적인 정치 및 법시스템을 개혁하여 자연과 미래세대의 이익을 고려할 수 있도록 하는 방안들이 제안되고 있다. 헌법 차원에서는 국회 구성의 다양화, 미래세대의 이익을 대변하는 행정조직 개편, 자연의 법인격성을 천명하는 생태주의 헌법의 제정 등이 시도되고 있다. 세부목표 7이 요구하고 있는 공적 의사결정의 반응성과 관련하여서는 국토와 관련한 행정의 계획재량과 주민투표의 기속성간의 조화문제가 세부적인 쟁점으로 부각될 수 있으며 포용성과 관련한 세부쟁점으로는 외국인행정에서의 사전적, 사후적 절차보장문제가 논의될 필요가 있다. 참여성과 관련하여서는 최소한의 요건으로서 언론의 자유, 집회의 자유와 같은 소통기본권의 보장, 소통의 질을 결정짓는 요소인 국정 운영의 투명성의 보장과 같은 고전적인 공법의 테마들이 지속가능발전의제의 맥락에서도 다시금 조명받고 있다.
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