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4-Aminothiosalicylic acid 誘導體에 關한 硏究
柳柄泰,柳暑弘 충남대학교 자연과학연구소 1980 學術硏究誌 Vol.7 No.2
Synthesis of 4-Aminothiosalicylic acid and its benzamide derivatives, which are possibly used as tuberculocidal drugs, are described. The products are identified by IR spectroscopy.
A Study on Metaphor in Philosophy and Semantics
柳炳泰 관동대학교 1989 關大論文集 Vol.17 No.2
Since the days of Aristotle and Quintillian men have tried to find meanings in metaphor and theorize it. Both the philosophers did that. During the Mediaval Ages figurative language was prevalent in the Bible. Through the 17th and 18th centuries some philosophers such as Hobbes and Locke, who were empiricists, denied and despised the value of metaphor, and other philosophers like Kant and Nietzsche recognized the necessity and creativity of metaphor partially or wholly. Austin and Searle were also the proponents of metaphors. They treated metaphor from the view of speech acts and pragmatics. Recently metaphor has been studied in terms of syntax and semantics, especially situation semantics. Situation semantics shows us how tautology has meanings in relation with situation. Semanticists use entailment to explain metaphorical structure and its meaning. As it is necessary to clarify the partially-overlapping characteristics of the literary terms such as metaphor, metonymy and synecdoche, some analytic verification has been given with a conclusion that metaphor subsumes metonymy and synecdoche which are not distinctive in their uses, rather interchangeable. Synecdoche is reducible to metonymy. Spatial orientational metaphors provide us with significant syntactic and semantic knowledge. Among other things Up and Down Metaphor, and Far and Near Metaphor suggest some cues with which we can understand more basically the relationship between syntactic structures and semantic interpretation: Closeness is Strength of Effect. The closer a word is located syntactically to other word or words, the easier it is to understand the meanmg of a sentence semantically. One of the ultimate objects of semantics is to deal with truth-conditions to verify the truth or the falsity of a proposition. Cognitive understanding of a metaphor means cognition of metaphorical truth or falsity as well. Some models of metaphor are quoted from Lakoff. They provide sources from which many relevant words and idiomatic expressions can be deduced and applied to their usage, contributing to language acquisition.
류병태(Byungtae Ryu),이도형(Dohyung Lee),류백능(Baekneung Ryoo),최홍석(Hongseok Choi) 한국추진공학회 2012 한국추진공학회지 Vol.16 No.6
This paper describes the results of study on reaction of insensitive igniter in which a pyrosensor is automatically sensing the rate of risk of fire or explosion of solid rocket motor exposed to an unexpected fire and makes the rocket motor burn itself safely. The Slow Cook Off(SCO) test following the regulation of MIL-STD-2105D was carried out with a rocket motor loaded with HTPB propellant, in which a thermal pyrosensor igniter was installed. The auto-ignition temperature measured was approximately 140℃ and it corresponded to Type V(Burning) reaction in SCO test, while the temperature by Kissinger equation was calculated to be 165.5℃.
류병태(Byungtae Ryu),김준형(Junhyung Kim),황진옥(Jinok Hwang),안길환(Gilhwan Ahn) 한국추진공학회 2013 한국추진공학회 학술대회논문집 Vol.2013 No.12
압력카트리지는 화약으로 고온-고압의 가스를 형성하는 일종의 에너지 발생 장치이다. 압력카트리지는 너트, 볼트, 밸브, 사출시스템, Pressure-Actuated Pump, Switch 및 Pyrotechnic Cutter와 같은 피스톤 장치 등 항공 우주 산업 분야에서 다양하게 사용된다. 압력카트리지는 에너지원인 주장약의 재료에 따른 성능의 차이가 크다. 본 논문은 주장약 재료에 따른 압력카트리지 성능을 비교 하였다. The pressure cartridge is kind of energy generating device to form the high-pressure and high-temperature gas using pyrotechnic charge. The pressure cartridge is used in the military and aerospace industry such as nut, bolt, valve, ejection system, pressure-actuated pump, switch and pyrotechnic cutter. The pressure cartridge shows performance variation depending on the main charge, which is the energy source. This paper compares the main charge characteristics according to the main charge.
류병태(Byungtae Ryu),이도형(Dohyung Lee),류백능(Baekneung Ryoo),최홍석(Hongseok Choi) 한국추진공학회 2011 한국추진공학회 학술대회논문집 Vol.2011 No.11
본 논문은 우발적 화재에 노출되면 이상 온도를 감지하고, 자동으로 반응하여 추진제를 연소시킴으로써, 고체 추진기관의 위험 정도를 완화시키는 둔감 점화 장치의 반응을 연구한 결과이다. Kissinger 식으로 구한 둔감 점화 장치 신호 화약의 자동 점화 온도는 165.5℃이었지만, 추진기관에 장착하고 MIL-STD-2105D의 규정에 따라 수행한 완속 가열 시험에서는 약 140℃에서 연소 반응을 하였다. This paper describes on the study of mitigation technique in which a pyrosensor is automatically sensing the rate of risk of fire or explosion of solid rocket motor exposed to an unexpected fire and makes the rocket motor burn itself safely. SCO test was carried out with a rocket motor loaded with HTPB propellant, in which a thermal pyrosensor igniter was installed. The rocket motor in SCO test was located in an oven at 50℃ for 7 hours. The temperature was regulated to be elevated at the rate of 3.3℃ per hour. Results showed Type V(Burning) reaction in this SCO test.
The species list of medical plants in Mt. Kyeroung
Yoo, Beong-Tae,Shin, Chang-Nam 충남대학교 자연과학연구소 1982 忠南科學硏究誌 Vol.9 No.1
계룡산의 관속식물은 119 과 407 속 670 종 8 아종 149 변종과 25 품종으로 총 852 종류로서 이중 약용식물은 90 과 189 속 218 종, 35 변종, 3 품종으로 총 256 종류이다.
Indoprofen 및 Indoprofen Lysinate와 Human Serum Albumin의 結合에 관한 硏究
李琬夏,柳柄泰,智雄吉,金東吉 成均館大學校 科學技術硏究所 1984 論文集 Vol.35 No.1
Indoprofen, 4- (1, 3-dihydro-1-oxo-2H-isoindol-2-yl)-α-methylbenzene acetic acid, has many advantages over the other antiinflammatory drugs, such as salicylates, naproxen. Although indoprofen is widely used as an antiinflammatory agent, it shows poor solubility in water. In order to inhance water solubility, indoprofen was made as lysine salt. The purpose of this study was to inspect the binding of the 1-anilinonaphthalene-8-sulfonatc(ANS) to human serum albumin (HSA) and to be to comparative studies on indoprofen lysinate and indoprofen in aspect of the binding to HSA and the number of binding sites was obtained using a fluorescent probe technique. The numbers of binding sites for indoprofen and indoprofen lysinate appear to be 3.35, 3.4, respectively and the association constants were found as follows; HSA-Indoprofen. ; K_b1 = 6.62 × 10 exp(5), K_b2 = 5.44 × 10 exp(4) HSA-Indoprofen lysinate ; K_b1 = 2.32 × 10 exp(5), K_b2 = 5.03 × 10 exp(4)