• Asian Journal of Innovation and Policy
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• 제11권2호
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• pp.148-182
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• 2022

This study analyzed changes in the national research facilities & equipment (RFE) policies historically promoted by the Rho administration (2003~2007), Lee administration (2008~2012), Park administration (2013~2016), and Moon administration (2017~2019) in South Korea. By adding new variables such as policy goals and policy means to a model suggested by Hogwood and Peters (1983), policy change types and their flow could be better classified. Korean RFE policies showed various flows in the policy change types instead of a general flow, which is the order of policy innovation -> policy innovation -> policy succession -> policy succession. This finding indicates that each administration could pursue a higher-level policy change purposively. It is highly required to prepare policy development that devotes to organizing and operating a national council, reflecting in the government's comprehensive plan after evaluating policy effectiveness, improving items needed for the RFE status survey, and unifying the research equipment registration.

• 한국초전도ㆍ저온공학회논문지
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• 제10권4호
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• pp.29-32
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• 2008

The design of a superconducting magnet system producing very high magnetic field is underway at Korea Basic Science Institute (KBSI) to accelerate three kinds of carbon irons (C+2, C+4, C+6) to 120 MeV. A quarter-scaled prototype will be manufactured in order to confirm the feasibility of our design. Magnet Inductances in the system have a great influence on the current ramping rates and contribute to the stored energy, which are usually considered to be unfavorable in magnet operation. The modeling and simulation scheme of a prototype superconducting magnet for the cyclotron K120 is described in this paper. The inductances are calculated by a numerical method with and without iron yokes, respectively. These calculation results will be used as engineering design details such as a current ramping rate and a quench protection design.

• 한국해양환경ㆍ에너지학회지
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• 제19권3호
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• pp.236-245
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• 2016

미세조류는 육상 식물과 비교하여 높은 성장률을 나타내며 다량의 지질과 탄수화물을 축적할 뿐 아니라 카로테노이드, 폴리페놀과 같은 생리활성 물질들을 체내에 축적하므로 바이오 에너지 및 기타 산업의 유망한 재료로 인식 되어왔다. 미세조류의 온도, 염분, 빛 등 비생물적 스트레스와 다양한 배양 조건에 따른 생화학 물질의 축적 변화 양상에 대한 연구는 많이 진행되어 왔지만 그러한 조건들의 동시적인 효과에 따른 성장과 생화학물질 조성 변화에 대한 연구는 거의 진행되지 않았다. 따라서 이번 연구에서는 산업적으로 많이 활용되고 있는 두 해양 미세조류인 Chlorella vulgaris와 Nannochloropsis granulata의 염분(10, 30, 50 psu) 및 온도(20, 25, $30^{\circ}C$)의 동시 배양 조건에 따른 바이오 매스의 변화와 바이오 에너지에 사용되는 중성지질 및 녹말의 축적 변화를 회분배양의 실험적 조건에서 측정하였다. 그 결과 $30^{\circ}C$, 30 psu 조건에서 C. vulgaris 및 N. granulata 모두 가장 높은 성장을 나타냈고, 광합성 색소인 chlorophyll a 및 carotenoid의 축적 양상이 온도 의존적으로 증가하였으며 중성지질과 녹말의 축적은 염분과 온도의 조합에 따라 두 종의 양상이 서로 다르게 나타나는 사실을 확인할 수 있었다. 이를 통해 미세조류의 염분에 의한 성장과 중성지질 및 녹말의 축적 양상은 서로 다른 온도 조건에 따라 그 변화 정도가 다르게 나타날 수 있다는 사실을 확인할 수 있었다.

• 한국융합학회논문지
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• 제11권11호
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• pp.283-291
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• 2020

본 연구의 목적은 최근 정부 R&D투자에 대한 질적인 평가가 강조됨에 따라, 국가과학기술연구회 주관 융합연구사업(창의형융합연구사업, 융합연구단사업)과 일반수탁연구사업의 연구 성과에 대해 정성적 관점에서 상대적 효율성을 분석하는 것이다. 이러한 목적을 달성하기 위해 연구 성과의 상대적 효율성을 광범위하게 사용되고 있는 DEA를 활용하였다. 분석대상은 한국기초과학지원연구원의 사례를 중심으로 진행하였으며, DEA를 위한 투입지표로 순연구비 및 인건비를 활용하여 논문 및 특허출원 수에 대한 정량적인 평가와 논문의 IF 및 특허의 SMART3를 통한 정성적인 평가를 비교분석 하였다. 분석결과 CCR가준 및 BCC기준에서 정성적인 관점에서 융합연구사업이 높은 효율성을 나타냈다. 이는 융합연구가 일반 수탁연구 보다 높은 수준의 연구가 이루어지고 있다는 것을 시사한다. 본 연구의 결과로 최근 정부에서 강조하고 있는 질적 평가에 대한 기준을 제시하고, 아울러 본 연구를 확대하여 향후 모든 기관에 대한 정성적 관점의 효율성 평가를 통해 인력과 연구비의 합리적인 R&D 투자선택에 위한 정책 및 연구과제기획에 시사점을 제공하고자 한다.

• Journal of Radiation Protection and Research
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• 제43권3호
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• pp.120-123
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• 2018

Background: Analysis of enrichment of $UO_2$ is important to verify the information declared by the license-holders. The redundancy methods are required to guarantee the analysis result. Korea Institute of Nuclear Nonproliferation and Control (KINAC) used to analyze it with alpha spectrometry and consign to Korea Basic Science Institute (KBSI) Thermal Ionization Mass Spectrometry (TIMS). This article evaluated the similarity of the results with two methods and derive correlation equation. It could be compared to the results measured by TIMS running by KBSI. Materials and Methods: There are not many certified materials for the uranium enrichment value. Therefore, 34 uranium pellets, which have the wide range of uranium enrichment from 0.21 to 4.69 wt%, were used for the experiments by the alpha spectrometry and the TIMS. Results and Discussion: The study shows there are the tendency of analyzed enrichment by each equipment. It shows uranium enrichment with alpha spectrometry evaluated 17% higher than that with TIMS on average. The regression equations were also derived in case the similarity between the two results with two methods is lower than predicted. Two experiments were designed to compare the effect of number of samples. The $R^2$ was 0.9977 with 34 pellets. It shows the equation is appropriate to predict the enrichment values by TIMS with that of alpha spectrometry. The $R^2$ was 0.9858 with four pellets for ten times. The $R^2$ decreased while the number of samples increased. The discrepancy between the lowest and highest enrichment seems to be one of the reason for it. Conclusion: KINAC expects the first equation with 34 samples is useful to predict the result with TIMS, the redundancy method, based on the alpha spectrometry. The extra samples are necessary to collect if the enrichment value analyzed by TIMS is lower than the value predicted with the equation. Further study would be followed related to the impact of the peak counts for each uranium isotopes, sample amount and number of experiments when TIMS established in KINAC by the end of 2018.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2016년도 제50회 동계 정기학술대회 초록집
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• pp.105.1-105.1
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• 2016

Many of the complex materials developed today derive their unique properties from the presence of multiple phases or from local variations in elemental concentration. Simply performing analysis of the bulk materials is not sufficient to achieve a true understanding of their physical and chemical natures. Secondary ion mass spectrometer (SIMS) has met with a great deal of success in material characterization. The basis of SIMS is the use of a focused ion beam to erode sample atoms from the selected region. The atoms undergo a charge exchange with their local environment, resulting in their conversion to positive and negative secondary ions. The mass spectrometric analysis of these secondary ions is a robust method capable of identifying elemental distribution from hydrogen to uranium with detectability of the parts per million (ppm) or parts per billion (ppb) in atomic range. Nano secondary ion mass spectrometer (Nano SIMS, Cameca Nano-SIMS 50) equipped with the reactive ion such as a cesium gun and duoplasmatron gun has a spatial resolution of 50 nm which is much smaller than other SIMS. Therefore, Nano SIMS is a very valuable tool to map the spatial distribution of elements on the surface of various materials In this talk, the surface imaging applications of Nano SIMS in KBSI will be presented.

• Bulletin of the Korean Chemical Society
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• 제27권10호
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• pp.1587-1592
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• 2006

We report the preparation, structure and magnetic properties of a new pillared complex, copper(II) hydroxy-1,4-butanedisulfonate, $Cu_2(OH)_3(O_3SC_4H_8SO_3)_{1/2}$. The titled compound was obtained by anion exchange, using copper hydroxyl nitrate $(Cu_2(OH)_3NO_3)$ as the starting material. According to the XRD data, this compound exhibits a pillared layered structure with organic layers tilted between the copper hydroxide layers with a tilt angle of $21.8^{\circ}$. FTIR spectroscopy confirms total exchange of nitrate by the sulfonate and indicates that the sulfonate functions are linked to the copper(II) ions with each aliphatic chain bridging the adjacent hydroxide layers. According to the dc and ac magnetic measurements, the title compound is a metamagnet consisting of spin-canted antiferromagnetic layers, with a Neel temperature of 11.8 K.

• 한국약용작물학회지
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• 제16권1호
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• pp.51-56
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• 2008

The content of two steroids-campesterol (1) and ${\beta}$-sitosterol (2), and four triterpenes-taraxetrone (5), ${\beta}$-amyrin (6), (-)-friedelin (7), glutinol (8) in the Orostachys japonicus A. Berger cultivated under various conditions was estimated and compared with those in wild one. The present investigation disclosed that there are no significant difference in their contents between cultivated Orostachys japonicus A. Berger and wild one. from viewpoint of the content of the steroids 1 and 2, and the triterpenes 5-8, the quality of cultivated Orostachys japonicus A. Berger is not inferior to the wild one.

• 공업화학
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• 제24권2호
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• pp.113-120
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• 2013

최근 의료기술의 발달로 인한 인간 수명의 연장으로 삶의 질 향상에 대한 욕구가 증가되었고, 또한 건강에 대한 관심과 요구를 증가되고 있다. 따라서 질병을 예방하고, 신속하게 검진 받을 수 있는 바이오센서의 개발에 대한 연구도 또한 활발히 진행되고 있다. 이들 연구에서 나노 탄소물질은 우수한 전기적/기계적 물성을 가지고 있어 바이오센서전극제조에 적합한 것으로 알려져 있다. 본 총설에서는 바이오센서 전극 제조방법 및 응용과 더불어 최근 주목을 받고 있는 나노 탄소물질을 이용한 탄소전극 제조 방법에 초점을 맞추어 소개하고자 한다.

• Macromolecular Research
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• 제17권4호
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• pp.259-264
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• 2009

Chemical modification of magnetic nanoparticles(MNPs) with functional polymers has recently gained a great deal of attention because of the potential application of MNPs to in vivo and in vitro biotechnology. The potential use of MNPs as capturing agents and sensitive biosensors has been intensively investigated because MNPs exhibit good separation-capability and binding-specificity for biomolecules after suitable surface functionalization processes. In this work, we demonstrate an efficient method for the surface modification of MNPs, by combining surface-initiated polymerization and the subsequent conjugation of the biologically active molecules. The polymeric shells of non-biofouling poly(poly(ethylene glycol) methacrylate)(pPEGMA) were introduced onto the surface of MNPs by surface-initiated, atom transfer radical polymerization(SI-ATRP). With biotin as a model of biologically active compounds, the polymeric shells underwent successful post-functionalization via activation of the polymeric shells and bioconjugation of biotin. The resulting MNP hybrids showed a biospecific binding property for streptavidin and could be separated by magnet capture.