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ECG-gated Cardiac MDCT 검사에서 심장기능 평가를 위한 최적의 수축기말과 확장기말 Phase(%)에 관한 연구
이현규(Hyun Gyu Lee),최재성(Jae Seang Choi),이현성(Hyun Seang Lee),안인현(In Hyun An),최남길(Nam Gil Choi) 대한CT영상기술학회 2010 대한CT영상기술학회지 Vol.12 No.1
Purpose The objective of our study was to evaluate ECG-gated cardiac MDCT in the heart functional evaluation of the most appropriate end systolic and end diastolic phase(%). Materials and methods The objects of this study were 100 patients(38 men, 62 women, age range: 21-83 years, mean: 57 years) with a chest pain. Using a 64 slice MDCT(Somatom Sensation Cardiac 64, Siemens Medical System, Erlangen, Germany) and one short axis image at 6 mm slice thickness and 5% R-R interval from 5% to 95% in the middle left ventricle region was reconstruct d after the exam It was reconstructed that the axial images of 5 mm slice thickness after checking the end systolic and end diastolic images of die short axis images with the blind test. And then, performing die volume program manually and got the volume data. Therefore, we evaluated the heart function by the ejection fraction formula. Results Of the patients, there were 7 patients with a abnormal ECG, 21 patients with a chest discomfort, 61 patients with a chest pain, 10 patients with dyspnea, and one patient with syncope. Two inspectors checked same patients. There were 2 patients with end systolic(20%) end diastolic(80%), 2 patients with end systolic(20%) end diastolic(90%), 4 patients with end systolic(25%) end diastolic(90%), 91 patients with end systolic(30%) end diastolic(90%), and one patient with end systolic(35%) end diastolic(90%) in the observation A. There were 2 patients with end systolic(20%) end diastolic(80%), 2 patients with end systolic(20%) end diastolic(90%), 3 patients with end systolic(25%) end diastolic(90%), 92 patients with end systolic(30%) end diastolic(90%), one patient with end systolic(35%) end diastolic(90%) in the observation B. So, It was signigicant at 30% end systolic and 90% end diastolic(p<0.05). It was not a significant result between die ejection fraction in cardiac sonogram and the ejection fraction in ECG-gated cardiac CT (p<0.05). Conclusion Most part of die results were constructed end systolic at 30% and end diastolic at 90%. And ejection fraction were a similar result between die cardiac sonogram and CT, though the cardiac CT was lower than that in sonogram.
냉동다진마늘에 대한 전자선 살균 효과와 생리활성 성분의 안정성
이현규(Hyun-Gyu Lee),조윤희(Yunhee Jo),권중호(Joong-Ho Kwon) 한국식품과학회 2016 한국식품과학회지 Vol.48 No.1
시판 냉동다진마늘에 대한 전자선 살균 효과를 알아보고, 유효성분 및 항균활성에 대한 영향을 확인하기 위해 국산 및 중국산 시료에 대해 실험하였다. 냉동다진마늘은 4 kGy 이상의 조사처리에서 ND 이하의 미생물 수준을 나타내어 살균 효과가 있음을 확인하였다. 시료의 수분은 국산에 비해 중국산에서 유의적으로 높은 함량이었으나, 조사에 따른 차이는 없었고, 전반적 색차는 4kGy 이상의 선량에서 유의적으로 증가하였다. 마늘의 total thiosulfinate 및 total pyruvate 함량은 살균을 목적으로 한 7 kGy 범위의 전자선 조사에서 비교적 안정하였다. 마늘의 alliin 및 allicin 함량은 4 kGy 범위의 전자선 조사에 영향을 받지 않으나, 7 kGy 선량에서는 특히 중국산 시료에서 유의적으로 감소하였다. 마늘의 에탄올 추출액은 Y. enterocolitica 균주를 포함한 7종의 병원성균에 대해 우수한 항균효과를 나타내었고, 조사선량의 증가에 따라 clear zone이 감소하는 경향을 나타내었다. 이상의 결과, 냉동다진마늘에 대한 4 kGy 범위의 전자선 조사는 생리활성 성분의 변화 없이 미생물학적 품질을 개선시킬 수 있는 적정 선량으로 확인되었다. Recently, the market for ready-to-use vegetables has increased largely due to consumer demands, which led to the production of minimally-processed frozen crushed garlic products. This study was designed to determine the effect of electron beam irradiation (0-7 kGy) on microbial decontamination, bioactive compounds, and antimicrobial activities of frozen crushed garlic obtained from Korea and China. The microbial counts (total bacteria, yeasts & molds) were reduced from log 3-4 CFU/g to non-detectable levels as a result of irradiation at 4 kGy. Irradiation treatment at 4 kGy did not affect the amount of alliin, allicin, total pyruvate, and total thiosulfinate of crushed garlic, however, this dose induced insignificant changes in antibacterial activities against pathogenic bacteria including Bacillus subtilis, Staphylococcus aureus, Salmonella enteritidis, Vibrio parahaemolyticus, and Yersinia enterocolitica. Therefore, electron beam irradiation less than 4 kGy can be considered suitable to improve the microbial decontamination without altering the biological activity of frozen garlics.
이현규 ( Hyun Gyu Lee ) 한국경쟁법학회 2011 競爭法硏究 Vol.23 No.-
The Constitutional Law guarantees all citizen`s freedom of expression. But such freedom and rights derived therefrom may be restricted by Act when necessary for the maintenance of law and order or public welfare. Under this constitutional principle, the freedom of expression may be restricted. The Fair Labeling and Advertising Act (the "Act") is the most representative legislation that restricts the freedom of expression regarding the labeling and advertising. The purpose of the Act is to prevent unfair labeling and advertising of products and services likely to deceive or mislead consumers and to facilitate the provision of correct and useful information to consumers so as to establish fairness in trade and to protect consumers. Therefore, if the Korea Fair Trade Commission ("KFTC") apply the Act to a particular labeling or advertising, it should be considered, from constitutional principle on the necessity for the maintenance of law and order or public welfare, whether the restriction of the labeling or advertising is necessary or not. Although there is a false or exaggerated expression in a labeling or advertising, if the requirement of possible the misunderstanding by consumers is not satisfied, the necessity to restrict the labeling or advertising is not accepted considering the constitutional basic human right. In this point, judgment of the possibility of misunderstanding by consumers to be caused by a particular labeling or advertising is an essential matter. There are three (3) requirments to judge the possibility of the misunderstanding by consumers, (1) The level of the consumers, (2) Definition of the consumer group to be standard, (3) and Consumer`s schema. Until now, the KFTC and Court have not been very keen in applying these requirements. But recently, the Seoul High Court rendered a meaningful judgment, providing a relatively detailed analysis. In the judgment, the Court analyzed the meaning of the possibility of the misunderstanding by consumers, applied to the case, and finally judged that there was no possibility of the misunderstanding by consumers. The Seoul High Court`s judgment was finalized by the Supreme Court in April, 2011. With these judgments, it is expected that there will be more discussions on requirements of the unfair labeling and advertising, including the meaning of the misunderstanding by consumers.
이현규 ( Lee Hyun Gyu ),이성욱 ( Lee Songwook ) 한국정보처리학회 2016 정보처리학회논문지. 소프트웨어 및 데이터 공학 Vol.5 No.8
Our goal is to build the system which collects tweets from Twitter, analyzes the sentiment of each tweet, and helps users build a sentiment tagged corpus semi-automatically. After collecting tweets with the Twitter API, we analyzes the sentiments of them with a sentiment dictionary. With the proposed system, users can verify the results of the system and can insert new sentimental words or dependency relations where sentiment information exist. Sentiment information is tagged with the JSON structure which is useful for building or accessing the corpus. With a test set, the system shows about 76% on the accuracy in analysing the sentiments of sentences as positive, neutral, or negative.