방전관용 전극개발 및 특성에 관한 연구

안성환,황동원,최준영,송시준,전용우,박원주,이광식 영남대학교 공업기술연구소 2001 工業技術硏究所論文集 Vol.29 No.1

This paper describes the development of sputtered tungsten electrode for discharge tube by making use of Sputtering method using plasma. The Xe discharge tube was designed and fabricated by using sputtered tungsten electrode, and the ICCD(Intensified Charged Coupled Device) and monochromator were used in order to observe the discharge image distribution and to measure the signal intensity. As a result, the emission light form the electrode was spreaded almost uniformly over a wide wavelength band, and the discharge image distribution and the signal intensity show quite a uniform distribution. The emission light from the Xe discharge tube was peaked at 488[nm] and 648[nm].

레이저 형광법에 의한 프로세싱 플라즈마중의 입자 계측에 관한 연구

최상태,이광식,하장호,전용우,박원주 嶺南大學校 工業技術硏究所 1998 工業技術硏究所論文集 Vol.26 No.2

Armorphous materials have various structures that is determined by different manufacturing conditions. That is, the photoelectric characteristics of films manufactured by different conditions are totally different. The growth mechanism of a-Si should be understood in order to controll the characteristics and structures of these kinds of materials. In this study, we try to elucidate the particle behaviours in a processing plasma using a low pressure glow discharge. And because of difficulties understanding discharge mechanism, we have done the processing so far depending on the experimental methods that compare the thin film produced by varing discharge parameter with the results of micromachinary. But, this has a limitation in the development because it regards the plasma as a blackbox. Therefore, because it needs to observe the discharge parameters and plasma background gas systematically, we try make sure that the particle behaviours be made clean by using laser fluorescence method which is predominant in a phenomina measurement and special resolution.

악관절 과두걸림의 보존적 치료에 대한 방사선학적 평가

김영주,이명희,정성창 대한두개하악장애학회 1992 대한두개하악장애학회지 Vol.4 No.1

The authors examined the condylar movement in 28 patients with closed locking of the temporomandibular joint before and after treatment and 33 controls by transcranial radiography. The Treatment adminstered to the patients were noninvasive and conservative therapy such as patient education, home care, reductive manipulation, physical therapy and occlusal splint. The authors obtained the following results. 1. In patient group, the mean amount of condylar translation was 5.07±2.00㎜ in the affected side and was 7.39±3.22㎜ in the unaffected side before treatment, the mean amount of condylar translation in affected side was 12.77±2.75㎜ and in unaffected side was 15.52±2.53㎜ after treatment. And the condylar translation was significantly improved after treatment(P<0.001). 2. In patient group, the ranges of comfortable mouth opening were 27.04±4.12㎜ and maximum mouth opening were 29.96±3.69㎜ before treatment, the ranges of mouth opening were below 40㎜, And the ranges of comfortable mouth opening were 43.86±1.86㎜ and maximum mouth opening were 43.96±1.90㎜ after treatment. And the mouth opening was significantly improved after treatment(P<0.001). 3. In patient group, the mean amount of treatment time was 4.13 ±1.52 months when patients opened above 40㎜. 4. The mean amount of condylar translation was 17.23±2.75㎜ in control group and was 12.77±2.75㎜ in the affected side of patient group after treatment. There was a significant difference between the groups(P<0.001), And in the unaffected side of patient group, the mean amount was 15.52±2.53㎜ after treatment. There was a significant difference between the control group and the unaffected side of patient group(P<0.05). 5. The ranges of comfortable mouth opening were 43.86±1.86㎜ in patient group after treatment and 42.82±4.47㎜ in control group. There was no significant difference between the groups. But the ranges of maximum mouth opening were 43.96±1.90㎜ in patient group after treatment and 46.48±3.85㎜ in control group. There was a significant difference between the groups (P<0.05).

대구지역 지하공간의 NO₂농도측정

朴出在,成炳胄,白成玉 嶺南大學校 環境問題硏究所 1994 環境硏究 Vol.13 No.2

본 연구는 대구지역의 지하공간내 NO₂농도의 기본자료를 제시하기 위해 수행되었으며 여기에서 얻어진 측정자료들은 지하공간내 NO₂를 감소시키기 위한 일종의 지침으로서 NO₂ 배출원을 조절하기 위한 준비작업으로 제공될 수 있을 것이다. NO₂측정은 Yanagisawa 연구진들이 제안해온 간접적인 시료채취 방법으로 필터뱃지를 사용하였다. 시료채취 지점은 총 5개소이며 여기에는 3개소의 지하상가와 2곳의 지하주차장을 선정하였다. 시료채취기간은 1992년 11월에서 1993년 4월까지이며, 시료채취용 필터벳지의 노출시간은 48시간이다. This study was carried out to provide basic data of NO₂concentration at underground spaces in Taegu Area, by which a sort of guideline for the reduction of NO₂may be prepared for controlling the emission sources. The NO₂measurements was performed using a filter badge method, which is a passive sampling technique purposed by Yanagisawa et al. A total of five sampling sites were selected ; three sites are underground arcades and two are underground parking lots. The sampling period was from November 1992 to May 93. The NO₂data measured were integrated for 48 hours.

울산지역 초, 중, 고등학생들의 자기 체형에 대한 인식 및 불만족도에 대한 조사

홍찬의,홍성완,정철주,이동진,최광해 영남대학교 의과대학 2008 Yeungnam University Journal of Medicine Vol.25 No.2

Background : In this study, we examined body image perception and dissatisfaction with weight and height in children and adolescents, according to age and body mass index. Additionally, we compared our findings with those of previous studies concerning eating disorders. Materials and Methods : In July and August 2008, 1,501 students were sampled from elementary, middle, and high schools in Ulsan and assessed using self-completion questionnaires. We used the Korean version of the Eating Attitude Test-26 (EAT-26) to screen for eating risk groups Participants were stratified by grade, gender, and body mass index. Results : 1) Dissatisfaction with height, weight, and body image was greater in the older group. 2) Dissatisfaction with weight and body image was greater in the heavier group. 3) EAT-26 scores and the number of individuals at high risk for eating disorders were higher in the female group than in the male group. Conclusion : The EAT-26 score in this study was similar to those found in Previous Westem studies. 2) There were a number of high-risk individuals in the female group, with a tendency toward earlier Presentation. Continuous health management and prevention programs are required.

괴사성 장염 환아의 금식기간 결정을 위한 Iohexol의 유용성 : Iohexol의 위장과 투여 후 채취한 소변을 전산화단층촬영법을 이용

정유진,홍성완,류민현,정철주,문경래 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.3

Background: Necrotizing enterocolitis is the most common gastrointestinal emergency in the neonates and its course is often fulminating with progressive lethargy. The purpose of this study is to determine the period of NP0(non per os) treatment in the patients with neonatal necrotizing enterocolitis. Matenal and methods: For determining the normal range of CT(Computerized tomography) attenuation coefficients of urine from normal neonates, 60 normal neonates participated in this study. And urine specimens from 16 patients with stage IIB necrotizing enerocolitis were obtained 8-12 hours after the instillation of iohexol enterally. The attenuation coefficients of each urine specimen were determined with CT. Periodic examinations were performed at an interval of two days. As soon as the values of attenuation coefficients reached the normal range, we discontinued NPO treatment. Results: The mean period of NPO treatment of 16 patients with stage IIB necrotizing enterocolitis was 11.1 days. The NPO period of 6 patients were 8 days, two were 10 days, four were 12 days, one was 14 days and three were 16 days. Conclusion: By means of this study, we were able to determine the period of NPO treatment on a case by case basis. The authors think that CT examination of the obtained urine after the instillation of iohexol may be a good method to determine the period of NPO treatment.

요로감염이 진단되었거나 의심되는 영아에서 방광요관역류를 예측할 수 있는 임상적, 실험실적 지표들에 대한 연구

조승만,홍성완,홍찬의,정철주,노영일 朝鮮大學校 附設 醫學硏究所 2007 The Medical Journal of Chosun University Vol.32 No.3

Background: Vesicoureteral reflux (VUR) in infants may be the main cause of recurrent urinary tract infection (UTI) and renal scarring. So the early diagnosis of VUR is helpful to prevent recurrence of UTI and to alleviate the grade of VUR. This study is to examine the predictability of clinical and laboratory variables for VUR in infants with confirmed or suspected UTI. Material and Methods: Data of infants younger than 12 months who underwent voiding cystourethrography (VCUG) between 2003 and 2006 were evaluated retrospectively. Among the infants with suspected UTI, infants with VUR (Group 1) vs no VUR (Group 2) were compared. And among the Infants with confirmed UTI, infants with VUR (Group 3) vs no VUR (Group 4) were compared, Variables selected in this study were age at onset, gender, fever, laboratory data and imaging (ultrasonography). Results: Among the variables, the mean of C-reactive protein (CRP) in Group 1 and Group 2 were 5.24±6.82 and 2.46±3.75, respectively, showing that Group 1 had a higher value than Group 2 (P=0.0104). And the number of patients with fever □38.5℃ in Group 1 was higher than in Group 2 (U=0.0004). The mean of C-reactive protein (CRP) in Group 3 and Group 4 were 8.95±6.1 and 5.39±6.0, respectively, showing that Group 3 had a higher value than Group 4 (P=0.0409). Conclusion: Fever≥38.5℃ and CRP≥0.6 ㎎/dL were closely associated with VUR in infants with suspected UTI. And CRP□3.4㎎/dL was closely associated with VUR in infants with confirmed UTI. However, further evaluations and studies for these variables will be needed to use them as predictors for VUR.

Mesh형 내부전극을 사용한 2중 원통형 오존발생기의 온도 의존특성

전병준,이상근,송현직,박원주,이광식 영남대학교 공업기술연구소 1999 工業技術硏究所論文集 Vol.27 No.1

Nowadays, environment pollution caused by development of industrial society becomes a serious social problem. So, ozonized gas is suggested as a counter plan against the problem. In this paper, a double cylindrical type ozonizer has been designed and manufactured to improve ozone yield by cooling external electrode. The ozonizer equipped with three electrodes(central, internal and external electrodes) and two gaps. Discharge and ozone characteristics are described in this paper by varying flow rate( Q ) of oxygen suppling gas, temperature of cooling gas and supplied voltage.

韓國産 납자루 亞科 魚類의 染色體와 ARM NUMBER

李金泳,蘇俊魯,金聖周 全北大學校 基礎科學硏究所 1982 基礎科學 Vol.5 No.1

Karyotypes of 12 species of the Acheilognathine fishes were studied using chromosomes of gill slit and kidney cells prepared by the flame drying technique. The results were as follows : 1. Numbers of chromosomes were classified into three patterns as 2n=48, 44, and 46. 2. In the 2n=48, No. of two-arm chromosome (TAC) and one-arm chromosome (OAC)were 12 or 14 pairs and 10 or 12 pairs, respectively. In the 2n=44, TAC and OAC were 14 or 12 and 8 or 10, severally, In the 2n=46, TAC was 2 pairs and OAC was 21 pairs. 3. Above results indicate that patterns of arm number(AN) were classified into four groups as AN=76, 72, 68, and 50. In the view of these results, we suggest that primitive chromosomal type of Acheilognathine fishes(cyprinidae) was 2n=46 and AN=50(R. notatus, R. suigensis).

Distribution of human rotaviruses in children with acute gastroenteritis

( Sang Hun Park ),( Se Ah Oh ),( Seok Ju Cho ),( Jib Ho Lee ),( Seung Hee Ryu ),( Sun Hee Park ),( Sung Kook Jung ),( Gun Yong Park ),( Sung Min Choi ),( Young Zoo Chae ) 대한보건협회 2011 대한보건협회 보건종합학술대회 Vol.2011 No.-

[연구배경] Rotaviruses (RoVs) are recognized as the major etiological agents among infants and young children. [연구목적] The aims of this study were to investigate the detection rate of RoV infections and the prevalence of the G and P genotypes of RoV strains detected in children hospitalized with acute gastroenteritis. [연구방법] Between January and December 2009, stool samples were collected from 1,423 patients 650 females, 773 males) presenting to five referral hospitals for the treatment of acute gastroenteritis in Seoul. [연구결과] In total, 1,423 stool samples collected in 2009 were tested by RT-PCR. 269 (18.9%) samples were positive by RT-PCR. The 269 positive samples were identified as either G or P genotypes (242 samples, 90.0% = G type and 251 samples, 93.3% = P type).