• Journal of Microbiology and Biotechnology
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• 제19권3호
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• pp.250-256
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• 2009

Acinetobacter strain $KNF2022^T$ was isolated from tobacco plant roots during the screening of antiviral substances having inhibitory effects on Tobacco mosaic virus (TMV) and examined by phenotypic, chemotaxonomic, and genetic characterization. It was a nonmotile, Gram-negative bacterium. This strain contained Q-9 as the main respiratory quinone. The major cellular fatty acids of the isolate were 16:0, 18:1 w9c, and 16:1 w7c/15 iso 2OH. The DNA base composition was 44 mol%. Phylogenetic analysis based on the 16S rRNA sequence revealed that the isolate formed an evolutionary lineage distinct from other Acinetobacter species. Based on the evaluation of morphologic, physiologic, and chemotaxonomic characteristics, DNA-DNA hybridization values, and 16S rRNA sequence comparison, we propose the new species Acinetobacter antiviralis sp. nov., the type strain of which is $KNF2022^T$ (=KCTC $0699BP^T$).

• Nuclear Engineering and Technology
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• 제53권5호
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• pp.1664-1675
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• 2021

In order to verify the statistical performance of the nonparametric tests used in the MARSSIM approach, all plausible contamination distribution types that can be encountered in a survey area should be investigated. As the first of such investigations, this study aims to perform the verification for normal distribution of the contamination in a survey area by simulating the collection of random samples from it through the Monte Carlo simulation. The results of the simulations conducted for a total of 81 simulation cases showed that Sign test and WRS test both exhibited an excellent statistical performance: 100% for the former and 98.8% for the latter. Therefore, in final status surveys of the MARSSIM approach, a high statistical performance can be expected in applying the nonparametric hypothesis tests to survey areas whose net contamination can be assumed to be normally distributed.

• Archives of Pharmacal Research
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• 제23권4호
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• pp.418-423
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• 2000

Oka strain VR-795 (Varicella Zoster Virus, VZV) of American Type Culture Collection (ATCC) has been used for chickenpox vaccine production. In order to use this strain for vaccine production, the strain must be identified and its stability must be confirmed. The identification of the Oka strain has been confirmed using Restriction Fragment Length Polymorphism (RFLP) and DNA sequence analysis of glycoprotein-II (gp-II). The amino acid sequences of Oka deduced from the DNA sequence of gp-II have changed at three amino acids against Ellen and at one amino acid against Webster. To prove the stability of the Oka strain during the passage, RFLP and DNA sequence analyses were also used with 11, 15 and 23 times of virus passage. We found that the Oka strain was stable at passages of up to 23 times, based on the RFLP and DNA sequence analyses. The confirmed Oka strain was renamed as BR-Oka for the purposes of chickenpox vaccine production.

• Journal of Positioning, Navigation, and Timing
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• 제10권2호
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• pp.145-151
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• 2021

According to the Korea Augmentation Satellite System (KASS) system milestone, Site Acceptance Test (SAT) has three steps test until the end of the project. SAT#1 is the first time of SAT steps and verify the KASS Reference Station (KRS) and Sub System (S/S) for the monitoring and controllable. After the equipment and software were installed at the Mission Control Center (MCC) with Central Monitoring and Control Simulator (CMS) for the SAT#1, the 1:1 test was progressed when the KRS and S/S are ready to test. SAT#1 has a 10 steps test case and it was progressed each KRS sites. The test was finished throughout the real-time monitoring and the data collection including the data analysis all of the 7 KRS sites. Finally SAT#1 was completed on December 2020 with successfully.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.696-697
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• 2015

Cost, schedule, and quality are the three major performance indicators for any construction project. Under the globalized competition in the nuclear industry, researchers and practitioners have also explored a systemized and integrated management system for cost, schedule, and quality. In order to address this issue, the concept of earned value management system (EVMS) has been often utilized. However, implementing EVMS for a mega-project of nuclear power plant (NPP) construction requires extensive overhead efforts. Though previous studies proposed structures and methods for effective NPP EVMS, there has been no legitimate study for data collection strategy for practical implementation. In this context, the purpose of this paper is to develop an effective data collection strategy for NPP EVMS. Firstly, the barriers to practical NPP EVMS were identified based on literature review and expert interviews. Strategies for data collection were then developed based on different phases of project life cycle. This study focuses on the 'life-cycle integrated progress management system' for NPP construction from an owner's perspective Therefore, results of this study can be used as a guide for preparing request for proposals (RFP) of an NPP owner organization.

• 한국식품영양학회지
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• 제32권3호
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• pp.226-235
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• 2019

In this study, the product characteristics and physicochemical properties were investigated through collection of commercial porridge. The addition rate of grain raw materials was about 6.5~11.75%, glutinous rice was added at a rate of about 23~60% to improve the viscosity and various other food additives were used. The moisture content characteristics varied among the products. The rotational viscosity of CP (Commercial Porridge)4 was the highest at 39,054 cP, while the flow viscosity of CP3 was least at 4.80 cm/30 seconds. The starch content differed among the products in the range of total starch 6.96~8.08%, amylose 1.41~2.61%, total sugar 6.55~12.81% and reducing sugar 0.50~0.99%. Particularly, total sugar showed a very high correlation (-0.920) while rotational viscosity and color value (b) showed significant correlation with most of the properties i.e. moisture, solids content etc. There was a rapid increase in the reactivity of starch degrading enzyme at the early stage of the reaction which gradually decreased with time. The physicochemical characteristics of commercial porridge presented in this study could be expected to increase the industrial use value of the related research because it considers the quality of the currently commercialized porridge for the future selection of suitable porridge raw materials.

• International Journal of Naval Architecture and Ocean Engineering
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• 제11권1호
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• pp.82-96
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• 2019

A semi-submersible structure has been widely used for offshore drilling and production of oil and gas. The small water plane area makes the structure very sensitive to weight increase in terms of payload and stability. Therefore, it is necessary to lighten the substructure from the early design stage. This study aims at an optimization of hull structure based on a sophisticated yield and buckling strength in accordance with classification rules. An in-house strength assessment system is developed to automate the procedure such as a generation of buckling panels, a collection of required panel information, automatic buckling and yield check and so on. The developed system enables an automatic yield and buckling strength check of all panels composing the hull structure at each iteration of the optimization. Design variables are plate thickness and stiffener section profiles. In order to overcome the difficulty of large number of design variables and the computational burden of FE analysis, various methods are proposed. The steepest descent method is selected as the optimization algorithm for an efficient search. For a reduction of the number of design variables and a direct application to practical design, the stiffener section variable is determined by selecting one from a pre-defined standard library. Plate thickness is also discretized at 0.5t interval. The number of FE analysis is reduced by using equations to analytically estimating the stress changes in gradient calculation and line search steps. As an endeavor to robust optimization, the number of design variables to be simultaneously optimized is divided by grouping the scantling variables by the plane. A sequential optimization is performed group by group. As a verification example, a central column of a semi-submersible structure is optimized and compared with a conventional optimization of all design variables at once.

• Journal of information and communication convergence engineering
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• 제20권4호
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• pp.273-279
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• 2022

Owing to the need to establish a cooperative-intelligent transport system (C-ITS) environment in the transportation sector locally and abroad, various research and development efforts such as high-tech road infrastructure, connection technology between road components, and traffic information systems are currently underway. However, the current central control center-oriented information collection and provision service structure and the insufficient road infrastructure limit the realization of the C-ITS, which requires a diversity of traffic information, real-time data, advanced traffic safety management, and transportation convenience services. In this study, a network construction method based on the existing received signal strength indicator (RSSI) selected as a comparison target, and the experimental target and the proposed intelligent edge network compared and analyzed. The result of the analysis showed that the data transmission rate in the intelligent edge network was 97.48%, the data transmission time was 215 ms, and the recovery time of network failure was 49,983 ms.

• Safety and Health at Work
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• 제12권2호
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• pp.209-216
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• 2021

Background: The article presents the results of studies performed in order to develop a new method of airborne potassium bromate(V) determination at workplaces. Methods: The method is based on a collection of the inhalable fraction of potassium bromate(V) using the IOM Sampler, then extraction of bromates with deionized water and chromatographic analysis of the obtained solution. The analysis was performed using ion chromatography with conductometric detection. The tests were performed on a Dionex IonPac®AS22 analytic column (250 × 4 mm, 6 ㎛) with AG22 precolumn (50 × 4 mm 11 ㎛). Results: The method provides for potassium bromate(V) determination within the concentration range of 0.043 ÷ 0.88 mg/m³ for an air sample of 0.72 m³ in volume, i.e., 0.1-2 times the exposure limit value as proposed in Poland. The method was validated in accordance with PN-EN 482. The obtained validation data are as follows: measuring range: 3.1-63.4 ㎍/mL, limit of detection (LOD) = 0.018 ㎍/mL and limit of quantification (LOQ) = 0.053 ㎍/mL. The developed method has been tested in the work environment, on laboratory employees having contact with potassium bromate(V). Conclusion: The analytical method allowed the determination of the inhalable fraction of airborne potassium bromate(V) at workplaces and can be used to assess occupational exposure.

• 비교문화연구
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• 제51권
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• pp.257-257
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• 2018

조선간본(朝鮮刊本) "유향신서(劉向新序)"는 이극돈(李克墩)이 1492년경 출간하도록 한 판본이다. 현존하는 조선간본(朝鮮刊本) "유향신서(劉向新序)"는 민관동에 의해 계명대학교 소장본 2종(上冊)과 김준식(金俊植) 집안(이하에서는 '후조당(後彫堂)'으로 약칭)의 소장본(下冊) 그리고 분실된 최재석(崔在石) 소장본과 김용기(金用基) 소장본이 발굴되었다. 필자는 이외에 한국학중앙연구원(하책(下冊)) 경기대학교(하책(下冊)) 일본국회도서관(완질) 아단문고(상책(上冊)) 성암고서박물관(하책(下冊)) 소장본의 존재를 확인하였다. 본 논문은 위의 판본들 중 원문을 확인할 수 있는 판본인 계명대 한국학중앙연구원 경기대 후조당(後彫堂) 일본국회도서관 소장본을 대상으로 조선간본(朝鮮刊本)의 특징들을 연구하였다. 상책(上冊)의 경우, 계명대 귀중본은 '초각본(初刻本)'이고 고본은 '초각본(初刻本)'의 제69~70면과 제71~72면을 보각(補刻)한 '보각본(補刻本)'이다, 또한 일본국회도서관 소장본도 고본과 동일한 면이 보각(補刻)된 '보각본(補刻本)'이다. 하책(下冊)의 경우, 한국학중앙연구원과 경기대 소장본은 '초각본(初刻本)'이고, 후조당(後彫堂)과 일본국회도서관 소장본은 제9~10면 제63~64면 제87~88 제107~108면을 상책(上冊)과 마찬가지로 해당 면을 보각(補刻)한 '보각본(補刻本)'이다. 현존 판본들을 비교해보면, 상책(上冊)의 경우 현존하는 판본으로는 2회에 걸쳐 인출되었음만 단정할 수 있고, 하책(下冊)의 경우에는 현존하는 4종의 판본들은 3회에 걸쳐 인쇄가 이루어졌음을 확정할 수 있다. 필자는 이어서 현존 판본들을 바탕으로 실제 문헌에 대한 연구를 진행하여 조선간본(朝鮮刊本)의 특징을 도출하였다. 먼저 권수제(卷首題) 권미제(卷尾題)와 문단의 형식을 논술하였고, 그리고 본문은 원칙적으로 자수(字數)가 '11행(行)18자(字)'로 되어있으나, 실제 판본 상에는 '18자(字)'가 아닌 경우들을 찾아내 해당 면(面)과 행(行)의 자수(字數)를 표로 제시하였으며, 또한 소자주(小字註)가 쌍행(雙行)으로 된 경우를 고찰하였다. 그 다음으로는 조선간본(朝鮮刊本)에는 원문에 빈칸이 나타나는데 해당부분과 해당 글자를 모두 밝혔으며, 마지막으로 조선간본(朝鮮刊本)의 '오탈자(誤脫字)'를 찾아내어 해당부분을 명기하고 오류의 이유를 구체적으로 분석하였다.