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백영일,김무강,이영호 충남대학교 의과대학 지역사회의학연구소 1987 충남의대잡지 Vol.14 No.2
The purpose of the report was to describe the regional classification of the zones of mouse incisor amelogensis. To do this, the epithelial tissue in the upper incisors of the mice were studied from 1.0,um Epon sections stained with toluidine blue after perfusion fixation with subsequent decalcification. The results summerized as follows. Such as the rats, the ameloblast layer was divided into three main zones (presecretory, secretory, and maturation zones) and then were themselves subdivided into ten small regions. Although a little differences were found within each region of the odontogenic and enamel organ, the contents and basic organization of the cells within each region in the mouse was less different than it is in the rat. Height of ameloblasts within each region was various and the value of secretory region toward the teeth neck was somewhat greater as compared to the other regions. Length measurements of secretory zone (28.6%) were almost doubled value as compared to the presecretory zone (13.4%) and length of the maturation zone which was roughly calculated was composed of the largest half of the odontogenic and enamel organ.
백영일(YI Baek),윤상기(SK Yoon),천대우(DW Chun),서영욱(YU Suh) 대한산부인과학회 1983 Obstetrics & Gynecology Science Vol.26 No.11
저자들의 자궁내 임신과 좌측 난소 임신이 동반된 병합임신 1예를 경험하였기에 보고하며 간단한 문헌 고찰을 하였다. A Case of Combined Pregnancy was relatively rarely occurred. We experienced a case of intrauterine pregnancy & left ovarian pregnancy as combined pregnancy in 40 years-old primiparous woman, and this case was presented with brief review of literatures.
NaF 投與가 白鼠의 成長과 骨 및 齒牙에 미치는 影響에 관한 形態學的 硏究
白榮日,李永浩,朴景蘭,金源式 충남대학교 의과대학 지역사회의학연구소 1991 충남의대잡지 Vol.18 No.1
For the study on the effects of sodium fluoride on growing rats, 30mg/kg and 60mg/kg of sodium fluoride administered orally with gastric tube for 1 week, 2 weeks and 3 weeks from the 8th day after birth. At the end of each experimental week in the control, 30mg/kg/day treated group and 60mg/kg/day treated group, the body weight, the thickness of proximal epiphyseal cartilage of tibia and condylar cartilage of mandible were measured and compared with each other. Also, the changes of ameloblasts and its layers of maxillary and mandibular molar teeth were observed with light microscope. The results were as followings; 1. The growth rate of young rats treated with NaF was decreased significantly compared with control group. 2. The thickness of proximal epiphyseal cartilage of tibia and condylar cartilage of mandible in NaF-treated rats were decreased significantly at the end of the first experimental week. 3. The ossification of cartilages of proximal tibia and mandibular condyle was inhibited markedly in the rats treated with NaF for 3 weeks. 4. In all experimental rats, the subameloblastic cyats were found at the secretory zone of maxillary and mandibular molar teeth.
흰쥐 뇌의 중심편도핵에서의 substance P 및 leucine-enkephalin 함유구조에 대한 전자현미경적 연구
조희중,백영일,홍해숙,주강 慶北大學校 醫科大學 1990 慶北醫大誌 Vol.31 No.2
In order to investigate the distribution and ultrastructure of substance P(SP) and leucine-enkephalin(Leu-Enk) immunoreactive structures in the central amygdaloid nucleus, brains of the rats were processed for peroxidase-antiperoxidase technique. The results obtained were as follows; SP immunoreactive neurons were found in the medial zone and immunoreactive axon terminals were heaviest in the lateral capsular zone. The immunoreactive neurons were round or oval in shape (diameter, 15-20㎛) and had two tor three proximal dendrites. SP immunoreactive neurons were characterized by a relatively thin rim of cytoplasm that surrounded an unlabelled nucleus. The immunoreactive products were found throughout the cytoplasm of the cell bodies and dendrites. Non-reactive axon terminals made synaptic contacts more frequently with the soma than with the dendrits of the immunoreactive neuron. Most of the synaptic terminals on SP immunoreactive somas were of type Ⅱ. The immunoreactive dendrites made both of type Ⅰ and Ⅱ synaptic contacts; the latter were more common. SP immunoreactive axon terminals contained numerous small (40-50㎚) clear vesicles and a few large(100-150n), dense cored vesicles. The reaction product characteristically filled the core of the large granulated vesicle and surrounded the outer membrane of the small clear vedicles. The majority of axon terminals displaying SP immunoreactivity formed symmetrical synapses with dendrites and, less frequently, with somas of nonreactive neurons. Leu-Enk immunoreactive neurons and axon terminals were located within central and capsular zones. The immuno-reactive neurons were round or oval shape(diameter, 17-24㎛) and had threeof four proximal dendrites. Compared to the ultrastructural characteristics of SP immunoreactive neurons, those of Leu-Enk immunoreactive neurons showed similar morphological features except that type Ⅱ synaptic contacts were more common between immunoreactive dendrites and nonreactive axon terminals.
김영민(YoungMin Kim),백영일(YoungIl Baek),김택윤(TacYoon Kim),장유리(YuRi Jang) 한국멀티미디어학회 2007 한국멀티미디어학회 학술발표논문집 Vol.2007 No.1
온라인 게임에서 네트워크의 구조는 중요하다. 게임의 성격파 장르에 맞는 네트워크 구조 선택이 요구되고 있다. 본 논문에서 실시간 게임에서 네트워크 간의 동기화 문제가 발생했을 때, 이 부분을 해결하기 위한 방안을 소개한다. 이 문제를 해결하기 위해 3가지 방법으로 접근을 했다. 목적지 데이터만 전송하는 방식, 위치정보를 계속 전송하는 방식, 그리고 목적지 전송 위치 비교 방식 3가지 방법이다. 이 방법들의 서로간의 장단점을 분석ㆍ비교하고 구현해 보았다. 그리고 최종적으로 목적지 전송 위치 비교 방식이 가장 적합한 이유를 밝힌다.
김일경(IK Kim),권영천(YC Kwon),박영수(YS Park),백영일(YI Baek) 대한산부인과학회 1982 Obstetrics & Gynecology Science Vol.25 No.7
저자 등은 국내에서는 아직 보고가 되지 않은 것으로 되어있는 희귀한 질천질환 1예를 경험하였기에 문헌적 고찰과 함께 그 증례를 보고하는 바이다. A case of adenosis of the vagina which was recently experienced in our dept. is presented with a brief review of related literature.