대학교양 국민윤리 교과운영 실태

이준구,양흥모 한국국민윤리학회 1988 倫理硏究 Vol.26 No.1

Determination and risk characterisation of bio-active piperine in black pepper and selected food containing black pepper consumed in Korea

이준구,김아영,김대원,김영준 한국식품과학회 2021 Food Science and Biotechnology Vol.30 No.2

Piperine is a bio-active compound found inpepper, including Piper nigrum L. and P. longum L. It hasa strong, pungent flavour and several pharmacologic benefits. However, the risks of piperine have not yet beencharacterized. In this study, piperine in black pepper andsome selected foods was determined to characterise the riskof exposure to piperine. Piperine in black pepper, curry andnoodle was analysed by high-performance liquid chromatography–ultraviolet detection, which was validatedthrough the measurement of performance parameters. Themean concentrations of piperine in black pepper, powderedcurry, retorted curry, instant noodle and cup noodle were4,418, 28, 3.4, 4.3 and 4.2 mg/100 g, respectively. Theestimated dietary exposure to piperine was 123.66 lg/kgbody weight/day, and the margin of exposure calculated bythe no-observed-adverse-effect level of piperine, was 162. The piperine from food does not cause an adverse healtheffect to the public in Korea.

HPD 개발수명주기를 적용한 원전 FPGA 기반 제어기의 설계와 검증

이준구,정광일,박근옥,손광영,Lee, Joon-Ku,Jeong, Kwang-Il,Park, Geun-Ok,Sohn, Kwang-Young 한국전자통신학회 2014 한국전자통신학회 논문지 Vol.9 No.6

원자력 산업계는 최근 원전 계측제어계통 설비의 단종과 같은 예상치 못한 환경에 직면해오고 있으며, 이러한 문제를 근본적으로 해결하고자 노력하고 있다. IAEA, IEC, 등의 연구결과에 따르면, FPGA는 단종이 예상되는 제어계통에의 대체수단으로 주목받고 있다. FPGA가 원자력 플랜트의 PLC(Programmable Logic Controller)를 대체하기 위해서는 높은 건정성과 신뢰성을 가져야 한다. 따라서, FPGA 기반 제어기의 건전성과 신뢰성을 향상시키기 위하여 HDL 개발수명주기를 적용하여 개발하였다. 또한, 원전 계측제어계통에 적용하기 위하여 번인시험과 환경시험의 기기검증이 수행되었다. 시험수행결과, 352시간의 번인시험과 92시간의 환경시험 중에 정상적인 기능 및 성능을 수행함을 확인할 수 있었다. Nuclear industries have faced unfavorable circumstances such as an obsolescence of the instrumentation and control system, and therefore nuclear society is striving to resolve this issue fundamentally. IEC and IAEA judge that FPGA technology is a good replacement for Programmable Logic Controller (PLC) of Nuclear Instrumentation and Control System. FPGAs are currently highlighted as an alternative means for obsolete control systems. Because the main function inside an FPGA is initially developed as software, good software quality can impact the reliability of an FPGA-based controller. Therefore, it is necessary to establish a software development aspect strategy that enhances the reliability of an FPGA-based controller. In terms of software development, HDL-Programmed Device (HPD) Development Life Cycle is applied into FPGA-based Controller. The burn-in test and environmental(temperature) test should be performed in order to apply into nuclear instrumentation and control system. Therefore it is ensured that the developed FPGA-based controller are normally operated for 352 hours and 92 hours in test chamber of Korea Institute of Machinery and Materials (KIMM).

The effects of extracting procedures on occurrence of polycyclic aromatic hydrocarbons in edible oils

이준구,서정혁,윤해정 한국식품과학회 2020 Food Science and Biotechnology Vol.29 No.9

Polycyclic aromatic hydrocarbons (PAHs) areone of the most hazardous naturally occurring chemicalcontaminants of food. Edible oils are easily contaminatedby PAHs generated during high-temperature processingsteps such as oil extraction and refining. In this study, theeffects of different extraction methods on the levels ofPAHs in sesame oils and red pepper seed oils were assessed. GC–MS was used to determine the levels of PAHs inedible oils. Sesame oils extracted from seeds by platepressingextraction method had lower levels of PAHs thanthose extracted by screw-expeller extraction method fromsesame flour. Furthermore, the levels of PAHs increased by62.2% when the extraction time was longer. Notably, thePAHs already present in oils could be effectively reducedby refining procedures such as sinking, centrifugation, filtration,and neutralization with alkali.

Comparative analysis of lead content during food processing

이준구,황정윤,이혜은,최장덕,강길진 한국식품과학회 2020 Food Science and Biotechnology Vol.29 No.8

Heavy metals in groups 3–16 in periods 4 andgreater. They exist naturally in the earth’s crust. People areexposed to heavy metals by the inhalation of polluted airand via the intake of contaminated food. People areexposed to lead (Pb), one of heavy metals, by consumingfoods that are contaminated from the environment. Pb isubiquitous in the environment and accumulates in plantsand animals that eat contaminated plants. The Pb in foodsbefore and after processing were analyzed via Inductivelycoupled plasma with mass spectrometry to determine theeffects of the procedures on the Pb migration and residue. This analytical method was verified to have a limit ofdetection of 0.011–0.859 lg/kg, acceptable linearity withthe regression coefficient of 0.999, relative recoveries of78.1–89.9% and repeatability of 1.4–7.7%. The amount ofPb was reduced during the following processes: more than79.6% by extracting ginseng, extracting red ginseng andballoon flower roots via alcohol, more than 47.9% byblanching Chwinamul, more than 18.2% by brewing coffeewith cold and hot water, more than 22.2% by extractingjuices from fruits and peeling fruits. Therefore, propercooking and food processing can be advantageous in termsof reducing exposure to Pb.

비용-편익분석의 이론과 현실 : 새만금사업의 사례 The Case of Saemankeum Tideland Reclamation Project

李俊求 한국재정학회 2001 재정논집 Vol.16 No.1

Ten years have already passed since the ceremonial tape of the 'Saemankeum Tideland Reclamation Project' was cut in November 1991, but the controversy over the economic value of the project still remains unresolved. This ambitious project is supposed to turn a vast area of tideland along the west coast of Korea into arable land through reclamation works. Since the tideland upon which reclamation works are undertaken is home to a rich variety of wildlife, environmental activists have voiced a grave concern about the negative ecological impact of the project. Besides, many economists have expressed their doubts about the economic value of the project. They point out that the true economic value of newly reclaimed land is not so great as that calculated in the original project evaluation All the negative opinions about the project notwithstanding, the Korean government finally has decided to go ahead with the project. During the past ten years, a huge amount of money has been poured into the project and a substantial part of basic engineering works has been completed. With a new administration in power and under the incessant pressure from environmental groups, however, the government has found it difficult to resist the demand for objective re-evaluation of the economic feasibility of the project. As a result, a group of civilian experts commissioned for re-evaluation work was hastily formed. Although there was some dissenting voice within the group, there reaffirmed the result of the original evaluation that the Saemankeum project could pass the test of economic feasibility. Their conclusion and the procedure through which they derive such a conclusion are summarized in the 'Evaluation Report of Environmental Impact of Saemankeum Project'. Upon reading the Report, however, one immediately gets an impression that it is full of misguided judgement as well as logical inconsistencies. The authors of the Report try very hard to convince us that the Saemankeum project has sufficient economic value by demonstrating that the benefit-cost ratio is well above one under various possible scenarios. However, not many people would be persuaded to believe that such an evaluation is credible, since their analysis lacks rigor and objectivity. Anybody with elementary knowledge of cost-benefit analysis would be able to figure out innumerable problems contained in the Report. The main purpose of this paper is to critically evaluate the appropriateness of the cost-benefit analysis carried out in the Report. It is to be demonstrated that the Report totally lacks credibility due sto too many errors and mistakes contained in it.

Codex Alimentarius commission on ensuring food safety and promoting fair trade: harmonization of standards between Korea and codex

이준구,이연규,김천수,한상배 한국식품과학회 2021 Food Science and Biotechnology Vol.30 No.9

Korea’s overall food safety management policiesreflect the Codex guidelines in terms of risk analysis andstandards. Korea’s food safety management plan, which isestablished every 3 years, includes the pre-emptive managementof risk factors and provides food safety informationon the basis of scientific evidence. Since officiallyjoining Codex as a member country in 1971, Korea has ledthe establishment of six Codex standards, including thosefor Kimchi and Gochujang. Moreover, Korea’s food standardsare harmonized with Codex’s risk assessment system. This review aims to examine the current status andtrends of Codex and to summarize and compare the foodsafety management systems and food standards betweenKorea and Codex.

서구의 도시형 인필형 집합주택의 형태 특성에 관한 연구

이준구,손세욱 대한건축학회 2000 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.20 No.2

헌법상의 신체의 자유

이준구 한국사법행정학회 1965 사법행정 Vol.6 No.3

Comparison study of validation parameters and measurement uncertainty of rapid analytical methods for piperine in black pepper by ultraviolet spectroscopy and high-performance liquid chromatography

이준구,김영준 한국식품과학회 2022 Food Science and Biotechnology Vol.31 No.9

Piperine, one of the main constituents of black pepper, is an important marker of black pepper quality because of its bio-activity and characteristic flavour. Ultraviolet spectroscopy and high-performance liquid chromatography–ultraviolet detection were used for rapid determination of piperine in black pepper. The performance parameters and measurement uncertainties of the methods were estimated to identify the most efficient method. Ultraviolet spectroscopy had good specificity and linearity. Its limit of detection was 0.65. Accuracy and precision ranged from 96.7 to 101.5% and from 0.59 to 2.12%, respectively. Measurement uncertainty was estimated as 4.29% for 49.481 g/kg (k = 2). High-performance liquid chromatography also provided good specificity and linearity. The limit of detection was 0.23. Accuracy and precision were 98.2–100.6% and 0.83–1.58%, separately. Measurement uncertainty was calculated as 2.47% for 34.819 g/kg (k = 2). High-performance liquid chromatography is more sensitive and accurate than ultraviolet spectroscopy.