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三種藥物이 家兎摘出子宮筋에 미치는 效果에 關한 實驗的 硏究
卞廷煥 경산대학교 제한동의학술원 1973 濟韓 Vol.1 No.-
Herbal Drugs for menstruation we found the reaction, affecting on exercised uterus as follows, acting rabbits with extract of fophora, achyranthes, and corydalys which are used most among herb drugs. 1. Sophora contracts uterine muscle at first but aftera a while it becomes relaxant and the more we give the animal the drug, the muscle relaxes, extinguishing the pain almost. 2. Achyranthes contracts uterine muscle greatly and as time past it becomes relaxing and when they are given more drug, the relaxed action is also decreasing but not so hard. 3. Corydalys makes uterine relaxed, accompanying little pain irregularly, if investigate much medicine it affects more contraction without paining but soon it relaxes again. With this result above, we could consider That sophera, achyranthes, and Corydalys are drugs which affect on uterine contraction, and Achyranthes the drug which acts irritation to uterus.
재해분석과 실태조사를 통한 스마트 팩토리 공정의 위험성 감소 방안
변정환 한국안전학회 2022 한국안전학회지 Vol.37 No.5
The domestic smart factory is being built and spread rapidly, mainly by mid-sized companies and large enterprises according to the government's active introduction and support policy. But these factories only promote production system and efficiency, so harmfulness and risk factors are not considered. Therefore, to derive harmful risk factors in terms of industrial safety for 12,983 government-supported smart factory workplaces from 2014 to 2019, industrial accident status analysis compared workplaces with automation facilities and government-supported workplaces with automation facilities. Also, to reduce risks associated with domestic smart factory processes, twenty government-supported workplaces with automation facilities underwent analysis, evaluating risks through a status survey using the process evaluation table. In addition, the status survey considered region, size, industry, construction level, and accident rate; the difference in risk according to the structure of the process was confirmed. Based on the smart factory process evaluation results, statistical analysis confirmed that serial, parallel, and hybrid structures pose different risk levels and that the risks of mixed structures are greater. Finally, safety control system application was presented for risk assessment and reduction in the smart factory process, reflecting the results of disaster analysis and actual condition investigation. -
방폭구조 ESD Detector 개발 및 본질안전 특성 분석에 관한 연구
변정환,최상원 한국안전학회 2020 한국안전학회지 Vol.35 No.1
Article 325 (Prevention of Fire Explosion due to Electrostatic) of the Rule for Occupational Safety and Health Standard specifies that in order to prevent the risk of disasters caused by static electricity, fire, explosion and static electricity in the production process, However, in order to do this, it is absolutely necessary to use a pre-detection technology and a detector for antistatic discharge prediction, which is a precautionary measure by static electricity in a fire / explosion hazard place, but in Korea, And there is no technical standard for the application of the technology of the explosion proof structure of the related equipment. Research methods include domestic and overseas electrostatic discharge detection technology and literature investigation of related equipment explosion proofing technology, domestic and foreign electrostatic discharge detection device production and use situation investigation, advanced foreign technology data analysis and benchmarking. In particular, we sought to verify the results of empirical experiments using electrostatic discharge detection technology through sample purchase and analysis of related major products, development of optimization technology through prototype production, evaluation, and supplementation, and expert knowledge through expert consultation. The results of this study were developed and fabricated two prototypes of electrostatic discharge detector based on the technology / standard related to electrostatic discharge detection technology in Korea and abroad through development of electrostatic discharge detection technology and development and production of detector. In addition, based on the development of electrostatic discharge detection technology, we developed an intrinsic safety explosion proof ib class explosion proof technology applicable to the process of using and handling flammable gas and flammable liquid vapor and combustible dust. In the case of the over voltage and minimum voltage are supplied to the explosionproof structure ESD detector, check the state of the circuit and the transient and transient currents generated by the coil and capacitor elements during the input and standby of the signal pulse voltage. Explosion-proof equipment-Part 11: Intrinsically safe explosion proof structure The comparative evaluation with the reference curve in Annex A of “i” confirms that the characteristics of the intrinsically safe explosion protection structure are met.