고온에서 HAN 계열 추진제 액적의 거동에 대한 연구

황창환(Chang Hwan Hwang),백승욱(Seung Wook Baek),한조영(Cho Young Han),김수겸(Su Kyum Kim),전형열(Hyung Yeol Jeon) 한국연소학회 2012 KOSCOSYMPOSIUM논문집 Vol.- No.45

The droplet behavior of 83.9 wt.% HAN water solution was investigated experimentally with various ambient temperature and nitrogen environment. At the initial stage of evaporation under thermal decomposition temperature of HAN, gradual decreasing of droplet diameter was observed. After that, the droplet started to expand due to the internal pressure build up by water nucleation inside the droplet. The micro explosion was observed at higher temperature than the decomposition temperature of HAN and the remaining droplet showed similar behavior of single composition droplet. The decreasing rate was augmented as the ambient temperature increasing.

신장이식 환자에서 HCMV 항원혈증 검사의 임상적 유용성

김탁,성흥섭,박관태,김송철,김성한,최상호,김양수,우준희,박수길,한덕종,이상오 대한감염학회 2009 감염과 화학요법 Vol.41 No.2

Background : This study was performed to determine the cut-off value and the predictability of symptomatic human cytomegalovirus (HCMV) infection according to the peak value of HCMV antigenemia assay in kidney transplant recipients. Materials and Methods : We reviewed the results of HCMV antigenemia assay (Chemicon, CA, USA) in patients who received kidney transplantation at our institution from May 2003 through May 2008, and investigated the existence and the type of HCMV infection by the medical record review. Patients who underwent the test only once during the episode or those who received ganciclovir for more than 48hrs before the test were excluded. The receiver-operator characteristic curve was drawn and the point showing maximum likelihood ratio (LR) was chosen as the cut-off value of symptomatic HCMV infection. Results : A total of 689 episodes were screened and 134 episodes were enrolled. Thirty-three (24.6%) episodes were symptomatic HCMV infection, 23 (17.2%) episodes were associated with HCMV syndrome, and 10 (7.5%) episodes were tissue-invasive diseases. The maximum LR was 7.5 (95% confidence interval, 4.014.2) and the cut-off value was 29.5 cells/200,000 WBC. The sensitivity, specificity, Positive predictive value, and negative predictive value were 66.7%, 91.1%, 71.0%, and 89.3%, respectively. Conclusions : The cut-off value of symptomatic HCMV infection by the peak value of HCMV antigenemia assay in our study was similar with previous results, although the sensitivity was relatively low.

흰쥐의 원위콩팥단위내 칼슘결합단백질 (calbindin-D28k)에 관한 면역세포화학적 연구

김영희,김완영,김인범,한승호,오수자,차정호,김진 대한해부학회 1997 Anatomy & Cell Biology Vol.30 No.6

한강하구지역에서 월동하는 재두루미(Grus vipio)의 개체군 감소

이화수(Hwa-Su Lee),신주열(Ju-Yeol Shin),이시완(Si-Wan Lee),강태한(Tae-Han Kang),윤순영(Soon-Young Yoon),김정수(Jungsoo Kim) 한국조류학회II 2012 한국조류학회지 Vol.19 No.4

김포시와 고양시 일대의 한강하구 지역은 우리나라에서 재두루미의 가장 중요한 월동지 및 중간기착지로 알려져 있지만, 이 지역의 조류 서식환경은 심각한 개발압력과 인간의 간섭으로 인해 지속적으로 나빠지고 있다. 따라서 본 연구에서는 2007-2008년과 2011-2012년의 월동시기에 본 지역에 도래하는 재두루미를 대상으로 월동 개체군 크기 변화와 월동지역 내에서 과거와 현재의 취식지역 이용 현황 등을 조사하여 개발행위가 이들의 서식에 미치는 영향을 확인하였다. 본 지역에서 월동하는 재두루미 개체군은 평균 124.9개체(2007-2008년)에서 59.0개체(2011-2012년)로 감소하였으며, 주요 취식지역에서 확인된 개체수는 평균 77.7개체에서 24.1개체로 감소하여 월동개체군의 감소폭에 비해 주요 취식지역의 이용 개체수의 감소폭이 더 크게 나타났다. 유형별 분석에서는 가족군에 비해 무리군의 개체수가 많이 감소한 것으로 나타났으나, 홍도평 지역의 가족군 이용 개체수는 변화가 나타나지 않았다(Mann-Whitney test. Z=-0.26, p=0.979). 그리고 과거 다수의 재두루미가 주요 취식지역으로 이용하였던 송포동과 평동지역은 2012-2013년 조사에서는 거의 이용하지 않는 것으로 나타났다. 이는 위 지역의 개발행위(예: 제 2자유로 건설 등)와 깊은 연관성이 있는 것으로 생각된다. Han-river estuary in Gimpo and Goyang city is well known as one of the most important wintering and stopover sites for migrating White-naped Crane (Grus vipio) in Korea. Nowadays, habitat quality of this area is getting worse due to serious development pressure and high human disturbances. So, we wanted to know whether development actions affected total wintering population change in Han-river estuary and feeding group pattern of White-naped Crane in main feeding habitats between the 2007-2008 and 2011-2012 wintering period. Average wintering population was decreased 124.9 to 59.0 and population of main feeding site also decreased 77.7 to 24.1. But decrease rate of main feeding site population was higher than total wintering population. Non-family feeding population was more decrease than family feeding population in the flock type analysis. But family feeding population of Hongdopyong was maintained from past and present (Mann-Whitney test. Z=-0.26, p=0.979). However, almost all White-naped Crane din not use both feeding sites, Pyong-dong and Songpo-dong, where were deteriorated habitat quality by human act.

Plasma estradiol-17βand estrogen receptor increased during the artificial induce sexual maturation and it influence choriocapillary layer of eye in Japanese eel, Anguilla japonica

Ji-Yeon Hyeon,Sung-Pyo Hur,Jun-Hwan Byun,Eun-Su Kim3,Shin-Kwon Kim,Han-Jun Kim,Se-Jae Kim,Akihiro Takemura 한국수산해양기술학회(구 한국어업기술학회) 2018 한국수산해양기술학회 학술발표대회 Vol.2018 No.11

비전시스템을 이용한 인간형 축구로봇에 관한 연구

노수희;김한정;김용태 한경대학교 2007 論文集 Vol.39 No.-

In this paper a humanoid soccer robot using vision system is presented. Soccer robot has 23 degrees of freedom and consists of various sensors such as IR and CCD camera, a remote controller and bluetooth module for the wireless telecommunication. We propose a soccer algorithm of humanoid robot in the various environments. The soccer algorithm is designed based on image processing and path planning. We verify our approach on a developed small humanoid robot in an experimental environment. The experimental result shows that the humanoid soccer robot plays soccer with a stable walking.

프로야구 투수들의 견관절 회전근에 대한 등속성 수축력 근기능 평가

김수현,한경진,신범철 韓國體育大學校附屬 體育科學硏究所 1997 韓國體育大學校附屬 體育科學硏究所論文集 Vol.16 No.1

The purpose of this study was t investigate isokinetic functional strength evaluation of shoulder rotational strength in korean professional baseball pictchers. Healthy professional elite pitchers(8 males) participated in this study. In order to mearsure the isokinetic peak torque, ER/IR ratio, PK%BW ratio, total work, peak torque acceleration energy, mean power, endurance ratio, we examined the both upper extremities of subjects at the angular velocity 60。/sec, 120。/sec, 180。/sec. The major results are as follows ; 1. There was meaningful statistical difference(P<.05, P<.01) between dominant side and non-dominant side in peak torque of the internal shoulder rotators at 120。/sec, 180。/sec speed. 2. There was meaningful statistical difference(P<.05), between dominant side and non-dominant side in peak torque % body weight of the internal shoulder rotators at 120。/sec speed. 3. There was meaningful statistical difference(P<.01, P<.05) between dominant side and non-dominant side in total work of the internal and external shoulder rotators at 180。/sec speed. 4. There was meaningful statistical difference(P<.01) between dominant side and non-dominant side in mean power of the internal shoulder rotators at 180。/sec speed.

초등학교 자녀의 구강보건에 관한 학부모의 인식 및 행동

한수진,문혁수,정재연,김영경,이병진,김은경,정혜련 韓國學校保健學會 2001 韓國學校保健學會誌 Vol.14 No.1

The purpose of this study was to collect basic data for the development of oral health education program of parents and to encourage their actual interest and participation in school oral health program. The authors surveyed parents' awareness and behaviors about the oral health of their children. The subjects in this study were 193 parents of elementary school children in Seoul. The collected data were analyzed, the obtained results were as follows: 1. Thirty-five percent of the parents investigated paid a regular visit to a dental clinic. The must common tooth brushing time among them was after dinner, the second was after breakfast, and this was followed by before bedtime and before breakfast. 2. Ninety-four percent of the parents responded that prevention is necessary, 92.2% had a plan to visit a dental clinic to prevent dental caries, and 60.1% experienced receiving pit and fissure sealants. Ninety-seven percent responded that they did check their children's dental caries. 54.9% chocked their children's oral status after tooth brushing. The parents who visit a dental clinic on a regular basis were more likely to check their children's teeth after tooth brushing than those who don't(P<0.05). 3. Eighty eight percent of respondents wanted to keep the fluoride mouth rinse program. 4. It is recommended that an oral health education program be developed for parents to visit dental clinics on a regular basis, to educate as to the right tooth brushing time, and to check out their children's oral status after tooth blushing.

學校給食이 어린이 身體 發育ㆍ發達에 미치는 影響

韓相俊,吳壽一,金世煥 江原大學校附設 體育科學硏究所 1991 江原大學校附設體育科學硏究所論文集 Vol.- No.16

To analyze the effects of provision of school lunch (PSL)on the development of children physical physique, 666(boys 343, girls 323)students of K. elementary school (PLS) were compared with 981(boys 491, girls 490)students of C. and K. elementory schools (none PSL) concerning about standing height, sitting height, body weight, chest circumference, and Rohrer index. The conclusions from the results were as follows : 1) There was no significant differency on standing height between PSL and non PSL groups. 2) It shows significantly high on sitting height in the none PSL group of girls of 10 years old. 3) On the body weight and Rohrer index the boys group in PSL 11 years old were presented significantly high, but there were no difference in the other's age group. 4) In the group of 10 years old boys and of 10,11 and 12 yeas old girls were showed significantly higher status on chest circumference in none PSL groups.

國民學校 兒童들의 運動傷害 調査 : focussed on 4 districts in Kangweon province 江原道內 4個地域을 中心으로

韓相俊,金龍洙,吳壽一,朴南煥,洪寬伊,兪玉在 江原大學校附設 體育科學硏究所 1983 江原大學校附設體育科學硏究所論文集 Vol.- No.8

To suggest the basic data for a precautionary measures against sports injuries and safety educaion in Elementary school boys and girls, 1,149 boys and 1,111 girls(Total 2,260 answerers) who are 4th, 5th, 6th grade of Elementary school residing 4 districts((city, farm, fishing, and mining village) in Gang-weon province were answered on the questionair which is contents, 21 numbers of questions from Oct. 3, 1982. to Nov.3, 1982. The conclusions from gained results by analyzed data are as follows: 1. The most favorite sports Boys, Baseball and soccer Girls: Running and lope jumping Especially, boys residing in city area answered that the most favorite sports is baseball, and boys residing in the other districts answered that it is soccer. 2. The time required for carry out sports. About 85% of tatal answerer carry out sports 30min. to 1 hour per day. 3. Causes of sports injuries. Taking no notice of boys and girls carelessness and insufficiency of practice on the skill is the most. The next order, foul and a dangerous place in boys and fitness difficency in girls. 4. Situation injuries. When fall down a body toward the front was the most. During mining and collision against the other body were next order. 5. Injuried places and the weather. Out-door ground was most, the weather when injuried was clear. On the other hand, over 80% of total answere injuried season were summer and fall. 6. Sports events which caused sports injuries. Boys: Mainly soccer and baseball Girls: Running and lope jumping 7. Injuried part of the body was represented following order: ①The knee ②The ankle ③Hand and the charecteristic special features of injuries were sprain and laceration in addition, its symptom was acute form of decease. 8. treatment after injuried Boys and girls care at their home but 3.9% among total answeres who were injuried, and duration of curing was and day to 30 days. 9. A trend of experience on sports injury. 84% among total answerers in boys, and 75% among total answerers in girls. Thus it shows the experience ratis are more in boys than in girls.