ICPCVD 방법에 의한 Nano-pore형 저유전 박막의 형성

오경숙,최치규,이광만 제주대학교 공과대학 첨단기술연구소 2001 尖端技術硏究所論文集 Vol.12 No.2

Si-O-C-H composite films were deposited using a ratio frequency inductively coupled plasma chemical vapor deposition(ICPCVD) system with a BTMSM(bis trimethyl silymethane) precursor and oxygen gases. FTIR spectroscopy and XPS were used to investigate the bonding configurations such as Si-O-Si, Si-O-C and Si-CH_3 bonds in the films. From the changes in the FTIR and XPS spectra between the as-deposited and annealed film, we infer that the attachment of the Si-O-Si ring link with CH_3 groups in useful for forming a nano-sized pore in the film. It can be explained to obtain a low dielectric constant(k= 2.5)

공기 중에서 파라메트릭 음향배열에 관한 연구

오세진,박광준,윤석왕 성균관대학교 기초과학연구소 1987 論文集 Vol.38 No.1

The acoustic properties of 2 kHz difference frequency wave generated from a parametric acoustic array in air were experimentally studied in an anechoic chamber. The mean primary frequency is 17 kHz. To eliminate pseudosound of the difference frequency produced directly by the primary waves at the microphone face, an acoustic filter was used for the experiment. The sidelobeless narrow beam of the difference frequency sound shows that a parametric acoustic array is one of the most feasible research tools for the study of scattering and target strength.

알칼리 처리에 의한 폴리에스테르 필름의 강도 및 염색성의 변화

오정숙,이광주,전정희 효성여자대학교 가정대학 학도호국단 1985 家政大論集 Vol.4 No.-

When polester fibers are hydrolyxed in alkaline solution, they dissolve successively from their surface and change their dyeability. We examined the weight loss ofpolyester films treated with NaOH solution under various conditions and the equilibrium.amount of disperse dyes absorbed in films. An uptake of dyes on films treated withan alkaline solution has beer discussed in relat'on to the changes of weight loss of films. The changes of weight loss increased linearly on hydrolyzing time because ofdissolving uniformly froml their surface of films. However. in high concentrations ofalkaline solution, the changes of weight loss increased drastically owing to OH-attackedto the inner regions of films. The tensile strength of hydrolysed films decreased a sodden drop when the weightloss were low. But it decreased gently when weight loss were high. The dye uptake of hydrolyzed films increased a very small amount below 20% ofweight loss. However, it increased remarkably above 20% of weight loss.

식이 상태와 카페인 투여가 일회적 운동 시 흰쥐 가자미근의 제 4형 당수송체에 미치는 영향

김광찬,김종오,오명진,윤재석,서태범,윤진환,정일규 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6

The purpose of this study was to evaluate the effects of diet condition and caffeine ingestion prior to long distance treadmill running on the GLUT-4 protein expression in Sprague-Dawley rats' soleus muscle. Total is rats were used For subjects and assigned to six groups: Fasting control(FaC group), feeding control(FeC), asting+exercise(FaE), feeding +exercise(FeE), Fasting +caffeine+exercise(FaCE), and Feeding+caffeine+exercise(FeCE). Each animal belongs to fasting group was forced to be in fasting state at least for 14 hours, The food was provided to each rat in feeding group 12minutes prior to treadmill running and the caffeine was ingested through the stainless steel tube 60minutes prior to exercise. All rats in exercise groups were forced to perform treadmill running for B9 minutes at the speed of 18m/min, and 0%grade, immediately after exercise, all animal was anesthetized by Chlorofolm (DC Chemical, Co, Ltd) and about 10ml of blood was drawn from each animal's heart and than soleus muscle was exposed and separated from the rat's leg. we found that the GLUT-4 in feeding groups increased much significantly compared to fasting groups(p<.05). The exercise in fasting state appeared to suppress the expression of GLUT-4 protein different from the exercise in feeding state. Cafreine ingestion prior to treadmill running of 60 minutes induced the significant increase or GLUT-4 protein expression both in fasting or feeding states.

최근 10년간 원광의대병원에서 시행한 소아 심장혈관 수술의 임상적 고찰

윤향석,정수미,최두영,오광수,오연균,김종덕,양현웅,이삼윤,김형곤,최종범,최순호,노병석 圓光大學校 醫科學硏究所 1995 圓光醫科學 Vol.11 No.2

We reviewed 10 years experiences of the clinical aspects and early postoperative results in 544 pediatric patients(age less than 16 years old). Among them. 529 cases had the congenital heart diseases, and 15 had the acquired diseases. Open heart surgery was performed in 413 patients. 115 cases were treated with non-open heart surgery. 16 with interventional catheterization. Annual increase of the cardiac patients was not significant in recent 10 years, except slight increase in 1994. The mean age of the study patients had been evidently changed to younger year by year. Total mortality rate of the open heart surgery was 6.4%. The cyanotic congenital heart diseases were high in early postoperative mortality by 25.7%, whereas 4% in acyanotic group. The age group less than one month was most highest in surgical mortality(66.7%). There were no deaths in patients with patent ductus arteriosus(103 cases), atrial septal defect(83 cases) or pulmonary stenosis(17 cases). Among 220 patients with ventricular septal defects(VSD). 10(4.5%) were died early postoperatively. In cyanotic group, the patients with pulmonary atresia with ventricular septal defects(PAVSD), transposition of the great arteries(TGA), interrupted aortic arch(IAA), complex cardiac anomalies with isomerism seemed to be most susceptible to an early death.

한국산 총채벌레의 분포, 기주 및 분류학적연구

趙廣善,權五均,禹建錫 서울대학교농과대학농업개발연구소 1991 서울대농학연구지 Vol.16 No.2

본 연구는 우리나라 총채벌레의 분포 특성과 기주식물을 조사하기 위하여 1987년 6월부터 1990년 7월까지 공시작물을 대상으로 전국적으로 실시하였다. 본조사에서 얻어진 결과는 다음과 같다. 1. 벼에서 조사된 총채벌레는 벼총채벌레 : Stenchaetothrips biformis, 엉겅퀴총채벌레 : Thrips setosus, 중국관총채벌레 : Haplothrips chinensis, 벼관총채벌레 : H. aculeatus 대만총채벌레 : Franklinilla intonsa등 5종이었다. 2. 조미채소류에서는 고추, 마늘, 양파, 파, 참께 등에서 대만총채벌레 : Fr. intonsa등 9종이 조사되었으며, 하와이총채벌레 : Thrips hawaiiensis와 좀머리총채벌레 : Microcephalothrips abdominalis등 2종을 추가하였다. 3. 과채류에서는 파총채벌레 : Thrips tabaci등 7종이 조사되었다. 이들중 중국관총채벌레 : Hap. chinensis, 대만총채벌레 : Fr. intonsa는 조미채소류에서와 같이 기주범위가 넓었다. 4. 파총채벌레 : Thrips tabaci의 기주식물은 Allium속 등 24종으로 밝혀졌다. 5. 우리나라의 총채벌레분포상은 기지종과 미기록종 Thrips simplex등 8종을 추가하여 63종이며 전체의 약 77%가 총채벌레과에 속했다. This study was carried out investigate the fauna of thrips and their relationship to host plants throughout the country from June, 1987 to July 1990. The results of this study were as follows. 1. Stenchaetothrips biformis, Thrips setosus, Haplothrips chinensis, Haplothrips aculeatus, Frankliniella intonsa were found in the rice. 2. Eleven species including Frankiniella intonsa, Thrips hawaiiensis and Microcephalorthrips abdominalis were found in the seasoning fruit vegetables such as red pepper, garlic. onion, welsh onion and sesame. 3. Seven species including Thrips tabaci were found in the fruit vegetables, especially among them, the host range of Haplothrips chinensis and Frankiniella intonsa was very wide. 4. Thrips tabaci was found in 24 species of plants including Allium. 5. Eight species including Thrips simplex were recorded in this study, so the total number of recorded thrips was 63. 6. The fact was known from this study that Family Thripidae included 77% of total recorded thrips in Korea.

EMBLEM SYSTEM 아파트내 IEEE1394 VESA 기반 통합 통신배선 NETWORKING 기술 제안

정영철,오미숙,장민혁,이광재,박종안 조선대학교 전자정보통신연구소 2002 電子情報通信硏究所論文誌 Vol.5 No.2

As telecommunication network users and information appliances increase, efficient home networking environment is needed for bulk A/V data transmission in real time. For this need, the integrated applicable Interfacing technologies using IEEE1394 and UTP cables are considered to be applied to the apartments architecture. In this paper, we firstly review the residential cabling environment of apartents according to the emblem system of MIC in a point of home networking software technologies development and information appliances increase in domestic IT situation, and finally propose a integrated home network infrastructure architecture for users' convenience on the basis of the implementation and experiment on the high speed interfacing environment in the emblem system apartment using the low cost interfacing media.

철근 콘크리트 구조물의 거푸집 존치기간 단축에 따른 경제성 평가

김철,오성진,유석형,이광수,신성우 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1

By means of increasing specified strength of concrete, the setting period of slab form can be reduced. When the form of slab is set, construction stage can be classified as follows; the allowable period of upper story work and the setting period of form and support of slab. Six full size scaled specimens with variables such as concrete strength and loading time are fabricated. Structural behavior and serviceability is examined at each construction stage. Test results show that the form of slab can be removed 2 days early without any damage of serviceability in case of increasing of concrete strength. This results were applied to a 15 story RC apartment, which were accomplished construction sequence analysis. As a results, the models are satisfied with structural safety, serviceability. Decrement of indirect cost showed greatly more relatively than increment of direct cost as result that achieve construction cost analysis of in case shortened 30 day's term of work at removal of forms early stage by concrete intensity promotion.

성균관대학교 물리학과 방음실의 설계 및 제작

朴興秀,尹錫旺,李聖壽,朴光俊,吳世珍 성균관대학교 기초과학연구소 1986 論文集 Vol.37 No.1

An anechoic chamber was constructed to make to condition of acoustic free field at the Department of Physics, Sung Kyun Kwan University. In this paper the criteria for the design and construction of the anechoic chamber are described. 48cm long wedges of density 15.3kg/㎥ glasswool attached to the 40×20×20㎤ base were used for the lining of anechoic chamber with the cutoff frequency of 125Hz. The interior space of the chamber is 3.56m long, 3.38m wide and 2.37m high.

콩코드 납축전지의 SOC 추정

전창완,채광석,임준규,오명섭,박명신 순천향대학교 부설 산업기술연구소 2004 순천향 산업기술연구소논문집 Vol.10 No.1

Nowadays many battery-based systems like electric vehicle have appeared. As a result efficient battery management becomes important. In this paper, state-of-charge (SOC) estimation of a Concode lead acid battery is discussed. The SOC estimation problem plays an important role in battery management system(BMS). In this paper, an SOC table is established by many charge and discharge experiments. This table can be used to development advanced SOC estimation algorithms.