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.

노인의 팔 굽힘/폄 저항 운동 시 하중 증가에 따른 근육의 활성도 및 기여도 분석

김현동(Hyun Dong Kim),황성재(Sungjae Hwang),손종상(Jongsang Son),김한성(Han Sung Kim),김영호(Young Ho Kim) 대한인간공학회 2009 大韓人間工學會誌 Vol.28 No.4

The purpose of this study was to assess activation and contribution of muscles of the elderly according to increased loading during the arm flexion extension resistance exercise. Surface electromyographic signals were acquired from biceps brachii, triceps brachii, deltoid posterior, pectoralis major and latissimmus dorsi to determine the difference of the activation of specific muscles between the elderly and young. Five elderly and five young males with no musculoskeletal disease volunteered for the study. Electromyographic activities in the muscles were measured during resistance exercise and normalized to the maximum EMG activity recorded in the maximal voluntary static contraction (MVC). Against the increased loading during arm flexion/extension resistance exercises, the young uses muscles evenly but the elderly uses one specific muscle frequently. Contribution of triceps brachii during extension and deltoid posterior during flexion was principal in the elderly.

야뇨증 환아들의 심리사회적 특성에 대한 다기관 연구 : 행동 및 정서 문제를 중심으로

조수철,김재원,신민섭,황준원,한상원,박관현,이상돈,김경도,김건석,서홍진,이유식,정재용,김영균,문두건,남궁미경,한창희,조원열,김영식,배기수,이종국,정우영,신의진 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.6

Objectives : The aim of this study was to examine the behavioral and emotional problems associated with nocturnal enuresis in Korean children. Methods : Three hundred eighteen children with nocturnal enuresis, together with their parents, completed the Child Behavior Checklist (CBCL), Disruptive Behavior Disorder Scale according to DSM-IV (DBDS), Children's Depression Inventory (CDI), State-Trait Anxiety Inventory for Children (STAIC), and Piers-Harris Children's Self-Concept Scale (PHCSC). Ninety-three normal students were selected as the control group. Results : Compared to the normal control group, the mean scores with regard to the withdrawn, social problems, attention problems, delinquent behavior, aggressive behavior, externalizing problems and total problems profiles were significantly higher in the nocturnal enuresis group according to the CBCL results. The nocturnal enuresis group also scored significantly higher in the ADHD and ODD profiles of the DBDS. The nocturnal enuresis group was more depressed and anxious than the control group according to the results of the CDI and STAI. The mean score of the PHCSC was significantly lower in the nocturnal enuresis group when compared to the normal control group. Conclusion : The results of this study suggest that children with nocturnal enuresis in Korea have clinically relevant behavioral and emotional problems. The findings support the link between nocturnal enuresis and psychopathology in Korean children.

서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)

김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1

In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.

대동맥 협착증과 동반된 출혈성 위장관 동정맥 기형에서 Estrogen-Progesterone 치료 1예

김도연,김화정,김효정,남준식,박수영,박영미,신정은,주미순,황민규,정혜경,손혜영,이선영,이한주 大韓消化器內視鏡學會 1999 Clinical Endoscopy Vol.19 No.부록2

민어(Miichthys miiuy)의 卵發生過程 및 仔稚魚 발육단계에 따른 형태발달

한경호,오성현,황동식,조영현,서대철 한국어류학회 2002 韓國魚類學會誌 Vol.14 No.2

본 연구는 2000년 8월 19일 전라남도 신안군 임자도 연안에서 2각망으로 어획된 민어 어미를 인위적인 방법으로 수정하여 부화 사육하면서 관찰한 卵發生 過程 및 仔稚魚 형태변화는 다음과 같다. 1. 민어의 受精卵은 구형의 분리 부성난으로 알의 크기는 0.96~1.08㎜(평균 1.01㎜, n=50)였고, 크고 작은 油球가 1~5개(0.06~0.34㎜) 존재하였다. 2. 사육수온 25.2~28.4℃에서 受精 후 17시간 10분에는 배체가 卵膜을 뚫고 머리부터 孵化하기 시작하였다. 3. 孵化 직후 仔魚의 전장은 2.36~2.63㎜(평균 2.48㎜, n=10)로 전장의 45.0~47.0%에 달하는 큰 卵黃(장경 1.11~1.20㎜, 단경 0.92~0.96㎜)을 가지고 있으며 筋節은 7~8+ 17~19=24~27개였다. 4. 孵化 후 3일째 仔魚는 전장 3.98~4.32㎜(평균 4.16㎜, n=10)로 입은 열려있었고, 이 시기에 섭이활동이 활발하게 관찰되면서 卵黃이 완전히 흡수되어 後期仔魚期로 이행되었다. 5. 孵化 후 10일째 後期仔魚는 전장이 5.88~6.74㎜(평균 6.30㎜, n=10)로 꼬리의 말단이 굽어지기 시작하는 시기로 黑色素胞가 기저후두골 뒷부분의 체측에서 점모양 및 나뭇가지모양 으로 출현하였다. 6. 孵化 후 31일째 개체의 전장은 9.62~12.76㎜(평균 11.12㎜, n=10)로 모든 지느러미가 정수에 달하였고, 체형이나 반문이 成魚와 닮아 種魚期로 이행하였다. Egg development and morphological change of larvae of the brown croaker, Miichthys miiuy, were investigated after obtaining samples by artificial insemination. The spawning season extends from the middle to the end of August in the seas off Lim-ja Island, Cheollanam-do. The fertilized eggs were transparent, spherical, separate and they floated. Egg diameter ranged 0.96~1.08㎜ with several oil globules of 0.06~0.34㎜. Hatching occurred 17 hours 10 minutes after fertilization in 25.2~28.4℃ water temperature. The newly-hatched larvae were 2.36~2.63㎜(mean:2.48㎜, n=10) in total length(TL), had a large yolk, and 7~8+17~19=24~27 myotomes. Melanophores were distributed on the eye lens. Three days after hatching the larvae had attained 3.98~4.32㎜ in TL(mean:4.16㎜, n=10), the yolk sac was completely absorbed, and they had transformed into the postlarva stage. The larva reached the juvenile stage with all fins formed and with a complete set of fin rays(D.Ⅹ-28~31;A.Ⅱ-7~8;P. 21~23;C. 19~21;V. 25~26) on the 31st day after hatching. The juveniles were 9.62~12.76㎜(mean:11.12㎜, n=10) in total length. At this point the juvenile was similar to the adult in body form and pigmentation pattern.

울산 지역의 엘리트 체육 활성화에 관한 연구

황영성,오영도,서봉한 釜山大學校 附設 體育科學硏究所 1998 體育科學硏究所 論文集 Vol.14 No.-

The purpose of this research was to investigate the present state of continual upbringing of school elite sports, athletic facilities, university and business sports teams and the achievements of the 78th National Athletic Competition of Ulsan city and find out how to activate the elite sports in Ulsan base on the investigations. The results are as follows; 1) In the 78th National athletic competition, Ulsan was ranked the lowest, scoring 10,868points, 1.68% of all the scores. 2) Athletic facilities of Ulsan are the worst of the 16 cities and provinces. 3) It is very necessary in Ulsan to continuosly train and develop teams. In particular, it is most required to concentrate on improving field and track competition, swimming, western style archery, gymnastics, cycling, weight-lifting, canoe and shooting.

고흥반도 연안에 분포하는 浮遊性 卵·仔稚魚 종조성의 계절변동

한경호,신영호,황동식 한국어류학회 2002 韓國魚類學會誌 Vol.14 No.1

전라남도 고흥군 녹동연안에서 2000년에 계절별로 총 4회에 걸쳐 만조시 채집된 浮遊性 卵·仔種魚의 종조성 및 양적변동을 조사하였다. 조사기간 동안 채집된 浮遊性 卵은 총 8개 분류군이 출현하여 7개 분류군은 種 수준까지, 1개 분류군은 기타난으로 동정되었다. 그 중에선 멸치(Engraulis japonica)가 전체 출현량의 52.1%를 차지하여 가장 우점하였으며, 다음으로 기타난이 13.2%, 주둥치(Leiognat husnuchalis)가 12.3% 보리멸(Sillago sihama)이 8.6%, 앨퉁이(Maurolicus muelleri) 4.0%, 전어 (Konosirus punctatus) 1.0%, 참서대(Cynoglossus joyneri) 0.2%을 차지하였다. 仔種魚는 총 8目 26科 33屬 37개 분류군의 仔種魚가 출현하여,33개 분류군은 種 수준, 2개 분류군은 屬수준, 2개 분류군은 科 수준까지 동정되었다. 조사기간 동안 출현한 仔種魚 중에서 멸치가 31.7%를 차지하여 최우점하였으며, 망둑어科(Gobiidae)에 속하는 어류는 46.2%, 베도라치(Pholis nebulosa)와 실고기(Syngnathus schlegeli)는 각각 5.4%와 2.3%를 차지하였다. 조사기간 동안 출현한 仔種魚 중에서 이들 4개 분류군이 차지한 비율은 85.6%를 차지하였다. The ichthyoplankton were sampled during four different months (2000) to study their seasonal variations and species composition off Kohung Peninsula. During the study, the fish eggs were identified to eight taxa, seven of which were identified to species level, and one identified to order. The most dominant species. Engraulis japonicus, accounted for 52.1% of the total fish eggs, followed by Leiognathus nuchalis(4.0%), Sillago sihama(8.6%), Maurolicus muelleri(8.6%), Sardinops melanostictus(4.0%), Konosirus punctatus(1.0%), Cynoglossus joyneri(0.2%). The collected larvae and juveniles were identified to 37 taxa (33 genera, 26 families, 8 orders). Of these, 33 were identified to species level, and two were identified to genus and family level, respectively. The dominant species, Engraulis japonicus, accounted for 31.7% of the total larvae and juveniles; it was followed by Gobiidae(46.2%), Pholis nebulosa(5.4%) and Syngnathus schlegeli(2.3%). These four taxa constituted 85.6% of the total collected larvae and juveniles.

카드뮴에 의해 유발된 흰쥐 고환의 미세구조 및 단백질 변화

황일면,한승로,정옥,김수일,이영호,김원식 충남대학교 의과대학 지역사회의학연구소 2000 충남의대잡지 Vol.27 No.2

Although cadmium is a well known heavy metal which attacks testis and results male infertility, the mechanism of action in the testis is'nt still fully known. In the previous experiment, authors observed morphological changes in the testis, and found cadmium-induced death of all the spermatogenic cells and hemorrhagic necrosis within the seminiferous tubules, and apoptosis and death of interstitial cells and fibroblasts in the interstitial tissue of the testis. In this experiment, cadmium chloride (4 mg/kg of body weight) administered to the adult male rats(Sprague-Dawlcy) intraperitoneally and sacrificed 1 week after treatment. And electrophoresis, immunoprecipitation and Western blotting, and N-terminal analysis were performed to find the proteins changed after cadmium treatment in the testis. And the results were as follows; 1. Two proteins of molecular weight 42kDa and 21kDa disappeared after cadmium treatment. 2. The protein of 2lkDa was rat collagen type I alpha 2. According to the above results, it was considered that cadmium degraded the collagen fibers within the wall of small blood vessels in seminiferous tubules and interstitial tissues and disrupted vascular walls, which resulted hemorrhagic necrosis, death of all the spermatogenic cells, and the death of interstitial cells and fibroblastic cells.

재료의 흡수상태에 따른 콘크리트의 물리적 변화에 관한 기초적 연구

한다희,황병준,박희곤,이영도,정상진 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)

Most concrete is recently made of an aggregate which is properly absorbed, and carried in it in order to do capability at every fields. We have been close to demand new capability of high flowing and enduring for specific concretes. That is difficult to cope with claiming the efficiency on deterioration from lack of a high quality aggregate. Therefore, For solving the problems we apply to a packing method for using dried materials. That is to say it is a kind of making into an instant. In this study, There is a purpose to present fundamental data, comparing and analyzing a phenomenon about aggregate's absorption following the rate of adding water, for using existing materials.