http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
송혁,김정래,이우철 한국전자통신학회 2022 한국전자통신학회 논문지 Vol.17 No.4
스팀멸균에서 사용되는 스팀 멸균지시제(Steam sterilization Indicator)의 성공여부의 색변화를 현재 사람의 눈을 의존해서 판독을 하고 있다. 멸균의 성공여부에 대한 색변화의 결과는 숙련된 훈련을 받은 사람만이 정확하게 판독해서 판정을 내릴 수 있다. 현재의 사람 의존적인 시스템을 스팀 멸균지시제에 대한 자동 판독시스템을 개발해서 기존에 인간의 눈으로 의존해서 판독했던 방식을 자동판독장치시스템을 개발해서 기존보다 정확하고, 누구나 쉽게 판독하는 시스템을 개발하였다.
FTA에 의한 거푸집 공사 안전사고 원인분석에 관한 연구
송혁,박현구,고성석 대한건축학회 2006 大韓建築學會論文集 : 構造系 Vol.22 No.6
The form work (1/4 among total construction period) occupies an important portion of construction because expense of form work occupies 10-15% of total construction expense, and form work has an influence on workability, economical efficiency and safety of total construction. This study aims to find the accident causes of form work (17.4% among total construction accidents) by researching past serious accident documents (1992-2002). Thus this study analyzed every accident of form work process: work, manufacture, transport, cure, and dismantlement classified causes. This study performed quantitative causes analysis of form work according to work types of form work with the basis of analyzed data, using FTA(Fault Tree Analysis : below FTA) which is deductive reasoning method because of the prevention of form work accident.
Antioxidant property of leaves and calluses extracts of in-vitro grown 5 different Ocimum species
송혁,Prem Kumar,Girija Arivazhagan,Sang-Il Lee,Hyung Moon Yoon,김익희,권혁중,김종문,Faruck Lukmanul Hakkim 한국식물생명공학회 2012 식물생명공학회지 Vol.39 No.3
In this study, the antioxidant property of leaf and callus extracts of five selected in vitro grown Ocimum species (Ocimum sanctum, Ocimum kilimandscharicum, Ocimum gratissimum, Ocimum basilicum, and Ocimum americanum) and their respective callus extracts was investigated. The callus cultures were successfully initiated on Murashige and Skoog (MS) medium supplemented with 2,4-dichlorophenoxy acetic acid (2,4-D) (1 mg・L) combined with different concentrations (0.1-0.4 mg・L) of kinetin as plant growth regulators. Total phenolic contents were estimated using the Folin-Ciocalteu reagent. 1,1-diphenyl-2- picrylhydrazyl (DPPH) radical scavenging, ferric reducing antioxidant power, Fe2+ chelating activity, and β-carotenelinoleic acid bleaching assays were used to determine the biological effects of the extracts. Interestingly, all the callus extracts exhibited significant (p<0.05) increase in phenolic contents and antioxidant activity. Furthermore, a liner correlation was obtained between the total phenolic contents and free radical scavenging activity (R2 = 0.783). The extracts of leaves and calluses of Ocimum species exhibited activity in all the in vitro antioxidant assays, but its extent was less potent that the positive controls butylated hydroxyl anisole (BHA) and ascorbic acid. A higher accumulation of phenolics in the callus extracts suggests that isolation of high-concentration materials with antioxidant activivity is possible from in vitro callus cultures rather than field-grown plant organs. Furthermore, these extracts may be used as an effective preservative in the food industry.
송혁,송민정,박현구,장길수 대한건축학회 2004 대한건축학회논문집 Vol.20 No.8
Soundscape design is applied for the purpose of expressing the characteristics of places, by supplying sound actively adequate for the place with identity. Bus station is a place for aggregating people aimed at transportation. That is, people come into station, and then, buy ticket, wait for departure or passenger. Therefore it needs more comfortable sound environment. This study aims to make bus station comfortable place acoustically to users. In this study, analysis on the behavior at each part of the space was performed and measurement at approaching path, waiting place, departure and arrival platform was carried out on the sound level and frequency characteristics. In addition, acoustic specialists' evaluation using questionnaire was performed with an object of ambient noise, information broadcasting and users' dialogue. The contents of KT and ST is composed of mixture sounds. The soundscape is varied with the region. Water sound is good element for establishing soundscape of bus station.