Transparent superhydrophobic surface by silicone oil combustion

Seo, K.,Kim, M.,Seok, S.,Kim, D.H. Elsevier 2016 Colloids and surfaces. A, Physicochemical and engi Vol.492 No.-

<P>A transparent superhydrophobic coating can be easily created through the use of commercial silicone oil and controlled combustion. In this simple fabrication, silicone oil is sprayed onto a hot glass heated to about 550 degrees C, resulting in the transparent superhydrophobic coating on the glass. The coating is stable at temperature up to about 450 degrees C, and against a saline solution and acidic or basic solutions with pH from 4 to 10. This silicone oil-based process does not require any additional solvent, further surface treatment, drying process or post-treatment process. Several applications of this process are exemplified through the proof-of-concept demonstrations. (C) 2015 Elsevier B.V. All rights reserved.</P>

Selenium 공급방법이 수경재배 토마토의 생장과 Se 흡수에 미치는 영향

이철규(Cheol-Kyu Lee),조경철(Kyung-Cheol Cho),이정현(Jeong-Hyun Lee),조자용(Ja-Yong Cho),서범석(Beom-Seok Seo),양원모(Won-Mo Yang) (사)한국생물환경조절학회 2005 생물환경조절학회지 Vol.14 No.4

토마토 ‘모모타로’를 공시하여 셀레늄 10㎎ㆍL?¹의 관주 및 엽면시비 등의 단용 및 혼용처리가 수경재배 토마토의 생육 및 과실 내 셀레늄 축적 함량에 미치는 영향을 구명하였다. 토마토 종자를 50공 트레이에 파종하여 70일 동안 육묘한 후 유묘를 코코피트 슬라이브를 이용한 수경재배 시스템에 정식하였다. 양액은 일본원예시험장 배양액 표준처방으로 조성하였으며, pH 5.8~6.2와 EC 2.3 ㎎ㆍL?¹ 등으로 조절하여 공급하였다. 셀레늄은 무기태 SeO₂와 sugar fatty acid ester에 킬레이트화 한 유기태 셀레늄을 10 ㎎ㆍL?¹으로 조성하여 관주, 엽면시비, 관주와 엽면시비를 병행하여 처리하였다. 초장, 엽수, 엽면적 및 엽록소 등의 토마토 생장반응은 셀레늄의 엽면시비, 그리고 엽면시비와 관주를 병행한 처리구에서 현저히 증가하였다. 과실 내 셀레늄 축적 함량은 킬레이트화 한 유기태 셀레늄을 엽면시비와 관주를 병행하여 처리한 경우에 0.302 ㎎ㆍL?¹으로 가장 높았다. 무기태와 유기태 셀레늄의 엽면시비와 관주 등의 단용 처리 보다는 혼용 처리가 전반적인 과실 생장과 체내 셀레늄 축적에 효과적이었다. 무기태 설레늄(SeO₂) 보다는 sugar fatty acid ester에 킬레이트화한 유기태 셀레늄 처리가 셀레늄을 함유한 기능성 토마토의 수경재배에 더 효과적이었다. This study was conducted to clarify the effects of supplying methods of selenium on the growth and Se uptake of hydroponically grown tomato plants. Tomato seeds (Lycopersicum esculentum Mill. cv. Momotaro T-93, Daki Seed Co.) were sown in plug tray with fifty holes, and raised for sixty days. Tomato seedlings transplanted to coco fiber slabs were supplied with the nutrient solutions adjusted to EC 2.3 dSㆍm?¹ and pH 5.8~6.2 recommended by the Japanese Horticultural Experiment Station. Selenium forms used were inorganic SeO₂ (here in after referred to Se) and organic selenium chelated with sugar fatty acid ester (here in after referred to chelated-Se). 10 ppm selenium solutions were treated to tomato plants with foliar applications, drenching, and foliar application plus drenching. Growth characteristics in terms of plant height, number of leaves, leaf area and chlorophyll content were significantly increased in the plot of foliar application of Se, and in the plot of foliar application plus drenching of chelated-Se than other plots, respectively. Transported contents of selenium into the tomato fruits were highest as 0.302 ppm in the plot of foliar application plus drenching of chelated-Se. Also, it had tended to be higher in the plot of foliar application plus drenching than in the plots of foliar application or drenching in both of Se and chelated-Se. Foliar application and drenching of organic chelated-Se were effective to produce the functional tomato fruits.

鬱血性心不全症에 對한 臨床的 觀察

徐明洙,金吉洙,金佑泰,張錫源,金承源,宋昌燮 대한적십자사 1983 적십자병원지 Vol.10 No.2

지진격리설계에서 교량모델링 기법

시석훈,김충호 경성대학교 공학기술연구소 2000 공학기술연구지 Vol.7 No.-

In modelling seismic isolation systems, the flexibility of the bearing must be modelled correctly so that the period shift is reflected in the results and the model must reflect the reduction in response caused by the hysteretic damping. In the study, the lead rubber bearing(LRB) were each modelled as cantilever beam element at the bearing locations and reduction in response caused by the hysteretic damping was involved by composite spectrum modified the caltrans ARS spectrum curve. The comparison between the LEADeR program and the MIDAS results demonstrates that the values obtained from the modeling are sufficiently accurate to access the benefits of the seismic isolation scheme.

ElGamal 형태의 디지털 서명 방식 제안 및 분석

서창호,김석우 공주대학교 기초과학연구소 2000 自然科學硏究 Vol.9 No.-

본 논문에서는 이산대수 기반으로 한 새로운 디지털 서명 방식을 제안하고, 통신상에서 기존의 EIGamal 방식에 비해 안전성 및 효율성 측면에서 제안된 서명 방삭을 살펴본다. This paper proposes new digital signature schemes based on the discre logarithm problem and discusses the efficiency and security of the proposed schemes. The proposed scheme is more efficient than the EIGamal scheme in the communication complexity, and is as secure as the EIGamal scheme.

1910년대 강릉 여자의 서울 구경 : <서유록>의 경우

서인석 우리말글학회 2001 우리말 글 Vol.23 No.-

This essay is the study on 〈서유록(SEO-YU-ROK〉which is the record of a woman's Seoul tour in 1913. She, aged 52, lived in Kangnung, Kangwondo and has been sightseeing of Seoul for 35 days with her husband and daughter. The writer Lady Kim's family was civilized enough to subscribe to a newspaper. Through this work we can see the way from Kangnung to Seoul, customs of those days, and Japan's encroachment to Chosun, And her sightseeing of Seoul shows us various interesting features (for example school, train, bank, theater and shops which sell modern things). Though there are no insights about the difference between the Japan's invasion and the development of modern civilization, it shows us the images of Seoul through the eyes of an intelligent woman who had lived in country during 1910s. I think this work is important as a representative prose of a woman in 1910s. Usually women had been alienated from the world of prose which was written by criticism. So this work, as a woman's Hangeul prose which is rare those days, is very accountable. (Yeungnam University)

응급실에서 소아환자의 진정제로서 케타민(Ketamine)의 사용

서정필,박준석,황태식,장석준,김승호 대한응급의학회 2000 대한응급의학회지 Vol.11 No.3

Background: Ketamine use in emergency room has been increased. It has rapid onset of action and appropriate duration of action. It does not need endotracheal intubation and produces potent analgesia, sedation, and amnesia. The object of this study is to determine the safety and the degree of physician's satisfaction in relation to ketamine use. Materials and Methods: This is a prospective study using protocol. Pediatric trauma patients who need sedation were given IM ketamine(4 ㎎/㎏) and atropine(0.01 ㎎/㎏) in a same syringe. Monitoring of patients was done by EM residents and complications of ketamine use were recorded. Physician's satisfaction was also recorded after the procedure. Results: Intramuscular ketamine was administered 54 times, mainly for laceration repair. Physicians completed protocol for 51 of treated children. The median time for onset of sedation was 6.5±2.4 min, and duration of action was 32.4±10.8 min. Hypersalivation occurred in 9.8%(n=5); random movement 3.9%(n=2), emesis during procedure(n=1), emesis at home(n=1), and transient oxygen desaturation(n=1). All were quickly identified and treated without specific airway management and sequelae. Of 84% of physicians was satisfied with ketamine use for pediatric sedation. Conclusion: Intramuscular ketamine can be administered safely and satisfactorily in emergency room to facilitate pediatric procedures in conjunction with a defined protocol and appropriate monitoring.

웹기반 통합데이터베이스에 의한 건설정보관리 방안

서정헌,박서영,곽중민,강인석 경상대학교 생산기술연구소 2002 工學硏究院論文集 Vol.2 No.-

Recently, our construction industry is using various work sections classification systems for civil engineering projects. However, because the public IDB(Integrated DataBase) for the work sections is insufficiently built, it is difficult to connect construction operation information from construction site to standard specification or standard method of measurment. Therefore, this study suggests a methodology to link the construction work sections information, such as cost, schedule, drawings and specification, with civil engineering standard method of measurement. And the methodology suggested in this study was applied to a web-based work sections information management system with IDB. An IDB modeling was designed by using DFD (Data Flow Diagram) and ERD (Entity Relationship Diagram).

완전 직장탈 환자에서 변실금에 영향을 미치는 인자

윤서구,이광렬,김건욱,송석규,김칠석,이종균,김광연 대한대장항문학회 2001 Annals of Coloproctolgy Vol.17 No.1

한국형 후각검사 KVSS Test의 개발

홍석찬,유영석,김은서,김석천,박수홍,김진국,강성호 대한이비인후과학회 1999 대한이비인후과학회지 두경부외과학 Vol.42 No.7