淡水産 참게(Eriocheir sinensis H. Milne Edwards)의 中腸上皮에 대한 走査電微顯微鏡的 考察

延根聖,盧鏞泰 성신여자대학교 기초과학연구소 1985 基礎科學硏究誌 Vol.2 No.-

경기도 강화군 선원면과 불은면에서 1985년 5月부터 6月 사이에 채집한 참게(Eriocheir sinensis H. Milne Edwards, 1853) 10마리(甲穀幅63∼110mm)에 대한 中腸上皮의 走査電子顯微鏡的 考察結果는 다음과 같다. 1) 中腸의 길이는 8∼14mm였다. 2) 肝졸臟이 부착되는 상단부는 길이가 일정치 않은 5∼10㎛ 길이의 微細絨毛가 불규칙한 隆起를 이룬 腸上皮의 오목한 곳마다에 1대씩 나 있었고 3) 그 뒤를 이어 중장의 중앙 하부까지는 腸上皮의 종열융기의 腸腔에 대하는 면에 다각형의 오목한 모양을 한곳에 4∼6㎛길이의 微細絨毛가 많은 것은 약 50개까지 나있고, 이는 아래로 내려갈 수록 즈 조밀도가 약해지며 4) 中腸의 下端部에서는 腸上皮가 더욱 잘게 주름잡히고 腸腔에 면하는 곳에 군데 군데 작은 돌기양 1.5∼2㎛길이의 微細絨毛가 확인되었다. 본 연구에서 검토된 모든 中腸上皮의 微細絨毛는 뒤쪽을 향하고 있었다. The morphological study of the midgut epithelium of the fresh water crab, Eriocheir sinensis H. Milne Edwards(1853) was performed by Scanning Electron Microscopy. The materials whose carapace width ranged from 63mm to 110mm had been collected at estuaries in Sunwo-myeon and Bulun-myeon, Ganghwa-gun, Gyonggi-do. The rsults obtained were as follows, 1) The lengths of the midguts in materials ranged from 8 to 14mm. 2) The anterior-most regions where the hepatopancreas is atached and the epithelial surface formed irregular folding had many single microvillus (5-10㎛ long) in every groove on the epithelium. 3) From the following regions above mentioned to the lower of half in midgut, there were polygonal concave forms on the luminal surface where in the center the microvilli(4-6㎛ long) are atached in pack maximum numbered about 50. 4) The lowest part of the gut, the longitudinal folding along the midgut epithelium was made, and the apical surface of the part bore single-micro-spine(1.5-2㎛ long) sparesly. All the microvilli examined in this study were posteriorly directed.

칠게(Macrophthalmus (Mareotis) japonicus De Haan)의 腸上皮의 徵細構造 및 組織化學的 硏究

延近聖,盧鏞泰 建國大學校基礎科學硏究所 1987 理學論集 Vol.12 No.-

칠게(Macrophthalmus(Mareotis) japonicus De Haan)의 腸上皮에 대한 走査電子顯微鏡, 透過電子顯微鏡的 觀察과 粘液質에 대한 性狀을 組織化學的으로 밝히고자 Haematoxylin-Eosin 염색, Periodic acid-Schiff 반응, Alcian blue pH 2.5와 0.4염색, Aldhyde fuchsin pH 1.7염색 및 Aldehyde fuchsin pH 1.7-Alcian blue pH 2.5염색을 시행하고 분석한 결과 다음과 같은 결론을 얻었다. 1. 中腸과 後腸의 길이의 대비는 약 1:4정도였다. 2. 中腸에는 얇은 粘液層이 덮인 가운데 上皮細胞의 頂端面은 細胞膜의 많은 灣入을 이룬 내측에는 미토콘드리아가 집중적으로 밀집하고 있었으며 가끔 全分泌細胞의 분비현상이 나타나고 있다. 3. 後腸에는 두꺼운 키틴질층이 腸腔에 면하고 있는 上皮表面을 덮고 있으며 키틴질의 表層에서는 2μm∼15μm에 이르는 돌기들이 部位에 따라 수와 분포양상을 달리하며 모두 뒷쪽을 향해 나있어 後腸壁에 발달한 근육층의 운동에 의한 물질의 後送을 도와주는 것으로 보였다. 4. 後腸上皮의 頂端細胞膜에서는 다소 작으나마 細胞膜의 많은 灣入과 그 내측에 밀집된 미토콘드리아의 분포가 막의 활발한 투과력을 보여주었으며 많은 분비과립의 분비를 볼 수 있었다. 5. 幽門胃壁을 덮고 있는 粘液質은 表層에 中性粘液質과 약간의 sialomucin을 포함한 sulfomucin으로 되어 있었고 內層은 약간의 中性粘液質에 sialomucin으로 되어 있었으며 內層 粘液質은 中性粘液質과 sialomusin만으로 되어있다. 6. 中腸은 中性粘液質에 약간의 sulfomucin이 섞인 상태이며 sialomucin은 전체적으로 나타나지 않았다. 7. 後腸은 中性粘液質이 sulfomucin보다 우세하게 섞여있는 상태였고 sialomucin은 역시 나타나지 않았다. The study on the ultrastructure, scanning electron microscopy and histochemical analysis was performed to the shore crab (Macrophthalmus (Mareotis) japonicus De Haan)(Crustacea, Decapoda). For the chemical study, haematoxylin-eosin staining, periodic acid-Schiff reaction, alcian blue pH 2.5 and pH 0.4 staining, aldehyde fuchsin pH 1.7 staining and aldehyde fuchsin pH 1.7-alcian blue pH 2.5 staining were carried out. The general types of mucosubstances detected were identified as neutral mucosubstance, sulfomucin and sialomucin. The results were as follows. 1. The length of midgut was approximately one-fifth of the total length of the mid and hind gut. 2. The midgut epithelium was covered with thin layer of mucosubstance. The epithelium in the apical border formed striated border under which the mitochondria(M) concentrated with high density. Holocrine cells could often be seen. 3. Hindgut epithelium lined by a chitinous layer which had a number of spines grouped linear arrangement numbered from a few to about thirty extruding from the upper part of the lining which directed posteriorly. The spines seemed to make the fecal substances move afterward easily by the densely distributed muscular movement of the gut. 4. The apical border of the hindgut epithelial cells appeared striated short under which the concentrated mitochondria were seen. Secretory granules scattered outside the cell membrane. 5. The upper chitinous layer of the epithelium of the pyloric stomach contained neutral mucosubstance and sulfomucin with a little amount of sialomucin. The lower chitinous layer of the epithelium consisted of a neutral mucosubstance and sialomucin. Sulfomucin was absent. 6. The midgut epithelium covered with a thin mucous layer consisted of a neutral mucosubstance with a some sulfomucin. Sialomucin couldn't be identified. 7. The chitinous layer of the hindgut epithelium showed a strong PAS positivity and fuchsinophility, and no alcianophility. It appeared to had a mixture of neutral mucosubstance and sulfomucin.

韓國産 가재(Cambaroides similis Koelbel)의 形態學的 硏究Ⅱ : 가재의 腸上皮에 대하여 On the Intestinal Epithelium of the Crayfish

延根聖 건국대학교 1986 論文集 Vol.22 No.1

The present study dent with the morphological view of the mid-gut and hind-gut epithelium in filter feeding invertebrates, especially Korean crayfish (Cambaroides similis Koelbel), the only species living in fresh water in Korea. The epithelia of the guts were covered by columnar epithelial cells. In the mid-gut epithelium, three successive zones could be distinguished. As the first zone was the anterior part of the gut to the region where the mid-gut anterior caeca (AC) were attached, the largest columnar epithelial cells with the oval nuclei located on bevels about the center of the cells were characterized. The second zone was the following part of the first zone, the epithelial cells were small somewhat cuboidal shaped cells with large oval nucleil ocated slightly on the basal portion from the center of each cell. The third zone was the posterior portion of the gut, of which the epithelial cells were tending to be bigger than those of the second with the round or oval nuclei in the basal position of the cells. The epithelial cells of the hind-gut were the larger ones than those in the posterior portion of the mid-gut, the nuclei of which were almost located to the basal position in the cells. Beneath the epithelia of the guts, there were some loosened connective tissues, moreover, in the hind-guts, the presence of many powerful striated muscles were impressive. Some of the apical borders on the mid-gut epithelia, there could be seen somewhat processlike extrusions, which would be expected to study more detail.

낙동강 중류부에서의 최적 수질관리 기법의 개발

한건연,박문호,이정식 경북대학교 산업기술연구소 1991 産業技術硏究誌 Vol.19 No.-

Optimum water quality management in the midstream of the Nakdong river was studied. Deterministic water quality model RQ1 and stochastic water quality model RQ2 have been developed. RQ1 contains two codes, RQ1-1 for hydraulic analysis and RQ1-2 for water quality analysis. RQ2 consists of Monte-Carlo simulation for the DO analysis in river. A water quality simulation using RQ1 and RQ2 in the midstream of the Nakdong river has been made. The computed concentration of DO and BOD at several points have good agreements with the observed data. BOD-DO profiles in this basin and the probability distribution for DO concentration at some points have been predicted in 1996 and 2001. This study provides the optimum water quality management planning in the future using the deterministic and stochastic water quality model.

數値模型에 의한 灣內의 水質汚染度 解析

韓健淵 경북대학교 공과대학 1987 工大硏究誌 Vol.16 No.-

The mathematical simulation of two-dimensional water quality analysis in a bay is studied. The basic equations of the model consist of continuity equation, momentum equation and pollutant transport equation. These equations are analyzed by Leendertse's multi-operation scheme. The Ulsan bay is selected as the area of the model application. Water surface elevation, velocity distribution and pollutant concentration distribution in the bay can be obtained from the study. The simulation results of the hydrodynamic model show that the velocity distribution is within the range of 10㎝/sec and the currents are mainly in the north-south direction, which have a good agreement with the observed data. Water quality modeling for some pollutants has further revealed that there is a discernible correlation between the calculated values and observed values. The methodological procedure taken in this paper will provide a basic contribution to the pollutant transport analysis in a bay.

數値模型에 의한 河川水質管理에 관한 硏究

韓健淵 慶北大學校 1984 論文集 Vol.38 No.-

The water quality management in river using the mathematical model was studied. QUAL-Ⅱ model for water quality was evaluated in terms of theories and structures in algorithm and input-output parameters. Some modifications for the problems involved in the program were also made. A water quality simulation in the newly improved channel of downstream part of the Han River has been made. The predicted concentration of BOD_5 and NH_3-N at the confluence of Joongryang-chun were 8.6㎎/l, 3.6㎎/I and those of Anyang-chun were 11.8㎎/1, 4.6㎎/l respectively. The modeling result shows that the impact of Joongryangchun and Anyang-chun is very serious, and wastewater treatment plant and intercepting sewer for these tributaries are thought to be urgently needed. A methodological procedure made in this paper will provide a basic contribution to the basin-wide water quality management.

甲殼類 十脚目의 腸上皮細胞 微細構造에 관한 硏究

盧鏞泰,延根聖 建國大學校基礎科學硏究所 1988 理學論集 Vol.13 No.-

甲殼類의 十脚目 중, 민물에 서식하는 가재(Cambaroides similis Koelbel)와 민물과 바다를 생태권으로 하는 참게(Eriocheir sinensis H. Milne Edwards) 그리고 바닷가 갯벌에 서식하는 칠게( Macrophthalmus (Mareotis) japonicus De Haan)를 재료로 주사 전자현미경과 투과 전자현미경에 의한 장상피 세포의 미세구조를 관찰하고 다음과 같은 결과를 얻었다. 1. 장상피 세포는 전반적으로 핵이 기부 가까이 위치한 단층 원주상피 세포로 되어 있고 중장의 길이는 가재가 0.8∼1.0mm(중 ·후장 길이의 1/25)로 극히 짧고, 참게는 20∼30mm(중 ·후장 길이의 2/5)로 가장 길며 칠게는 5∼8mm(중 ·후장 길이의 1/5)이다. 2. 중장 내벽은 3종 모두 체축에 따라 잔잔한 주름이 많이 잡혀져 있고, 후장의 두꺼운 키틴질 표면층에서는 2∼20㎛의 돌기가 2∼50개 정도로 선상 또는 집단을 이루고 뒤쪽을 향해 나 있어 장 속의 물질을 뒤로 이동시키는 작용을 한다. 3. 중장은 원주상피 세포로 되었고 대형의 엽상핵이 기저부 가까이 위치한다. 정단 상피세포의 자유표면에 가까운 세포질에는 미토콘드리아가 밀집하고, 핵 주변에는 많은 조면소포체가 분포하며 세포질 전반에 유리 리보소옴이 짙게 분산되어 있다. 가재와 칠게는 자유표면에 솜털피막이 발달하고 측면 세포막에는 interdigitating cell processes가 발달하고 있으며, 참게는 자유표면에 솜털피막이 발달한 미세융모가 밀생하고 측면 세포막은 occuluding junction과 intermediate junction이 있어 3종 모두 흡수 및 분비기능을 가지고 있다. 4. 후장은 종에 따라 차이가 크게 나타났다. 가재는 기저부 가까이 卵形의 핵을 가진 원주세포 자유표면에 솜털피막이 발달한 긴 미세융모, 그 안쪽 세포질에 밀집된 미토콘드리아, 핵 주변에 나열된 많은 조면소포체 및 측면 세포막의 interdigitating cell processes의 발달로 흡수기능을 가지고 있다. 참게는 작은 미세 융모가 발달한 상피세포의 자유표면 안쪽 세포질에 밀집된 미토콘드리아, 세포질 전반에 분산된 많은 유리 리보소옴, 측면 세포막의 interdigitating cell processes, 심한 기저막의 함입과 많은 분비과립의 발달이 흡수, 분비 및 활발한 수분출입을 나타낸다. 칠게는 卵形 핵이 기저부 가까이 위치하며 크고 긴 미토콘드리아가 핵 주변에서 자유표면까지 분포되고 전자밀도가 높은 暗세포와, 미토콘드리아가 자유표면 밑에 주로 분포되고 전자밀도가 낮은 明세포가 구분된다. 후반부 상피세포는 분비입자, 분비과립, 핵 기부에 분포된 미토콘드리아, 기저막의 함입 및 세포간극의 발달로 무기물과 수분의 활발한 대사기능을 가지고 있다. 핵 주변의 미토콘드리아는 크리스테가 세로로 배열되어 있다. The studies of the scanning electron microscopy and the ultrastructure of the intestinal epithelia on three species of decapod crustacea, fresh water crayfish(Cambaroides similis Koelbel), fresh water crab(Eriocheir sinensis H.Milne-Edwards) and shore crab (Macrophthalmus (Mareotis) japonicus De Haan)were performed in this thesis. The results obtained were as follows: The mid-and hindgut lumens of the three species are lined by a simple columnar epithelium with the basally located nucleus. The lengths of the midgut are approximately 0.8mm-1.0mm long in the fresh water crayfish, 20mm-30mm long in the fresh water crab and 5mm-8mm long in the shore crab. Scanning electron microscopy: The midgut epithelial lining is covered with mucosubstances and folded longitudinally. The hindgut epithelium is lined with chitinous layer, from whose surface the chitinous spines numbered from a few to fifty (two-twenty um long) are extruded in a group or linear arrangement and directed posteriorly. The spines make the fecal substances move afterward easily. Ultrastructure: The midgut epithelial cells of the three species are characterized by a fuzzy coated striated border, dense mitochondria in the apical cytoplasm, a large amount of rough endoplasmic reticulum around the lobed shape of nucleus, free ribosomes, interdigitating cell processes of lateral cell membrane and the junctional structure. These diverse features indicate the function of an absorption and a secretion. The hindgut epithelial cells differ from each species observed. The epithelial cells of the fresh water crayfish are characterized by the oval shaped nucleus located basally, fuzzy coated long microvilli, rough endopalsmic reticulum around the nucleus and interdigitating cell processes of lateral cell surface, which indicate an activity in an absorption. The epithelial cells of the fresh water crab are characterized by condensed mitochondria under the apical striated border, free ribosomes scattered in cytoplasm, interdigitating cell processes of lateral cell surface, a great developed basal infoldings and the numerous secreting vesicles which indicate an activity in an absorption, a secretion of ions and water transport. The epithelial cells of the shore crab are distinguished into two cell types. The electrondense dark cells contain long and large mitochondria around the nucleus to the apical cell surface, more rough endoplasmic reticulum and free ribosomes than the electron-lucent light cells. The epithelial cells in the distal portion of the hindgut contain secretory particles, secretory vesicles, numerous mitochondria around the nucleus, basal infoldings and intercellular apaces, which indicate an sctivity in water and ions transport. The mitochondria around the nucleus have moderate dense longitudinal cristae.

General Priessmann 技法에 의한 開水路 不定流 解析

朴在弘,韓健淵 경북대학교 산업기술연구소 1993 産業技術硏究誌 Vol.21 No.-

Numerical instability of Preissmann scheme is studied for unsteady flow analysis in open channel. The solution strategies to the instability problems are presented in this paper. The main causes of numerical instability of Preissmann scheme are mixed flow, abrupt change in cross section, inappropriate roughness coefficients, time-distance step, rapidly rising hydrograph, dry bed and so on. To overcome these difficulties, general Preissmann model is developed by introducing distance weighting factor(Φ) and the scheme has more dissipative characteristics than existing Preissmann scheme. Verification with the observed data of a natural channel is required in the future. This model presented in this study is expected to contribute to floodwave analysis using Preissmann scheme.

Lagrangian Transport Model에 의한 擴散方程式의 數値解析

朴文浩,韓健淵 慶北大學校 1983 論文集 Vol.35 No.-

The mathematical modeling of the dispersion behaviour in the river was studied. The solution approach to the convective-diffusion equation uses a Lagrangian reference frame which greatly simplifies the mathematics of solution procedure and dramatically reduces errors caused by numerical dispersion. The dispersion analysis of the conservative material was made and the accurrcy of the model was also discussed. The model should be calibrated by field data, and expected to be developed for the simulation of the various pollutants such as BOD, DO, nitrogen, phosphorous and of the unsteady flow in the river.

限界狀態 設計法에 의한 鐵筋콘트리트 二方向 슬라브의 最的設計

朴文浩,韓健淵 慶北大學校 1983 論文集 Vol.35 No.-

This study attempts to optimize reinforced concrete two way slabs with each spanning condition, based on the concept of ultimate limit state and of serviceability limit state. The variable adoped in this mathematical model consist of design variables including sectional sizes and reinforcement areas per unit width of middle strips and column slrips of slab. The cost function is taken as the objective function in the formulation optimal problem. A number of constraint equations involving flexural stress, reinforcement ratio, deflection and side limit is derived in accordance with BSI cp110 requirements on the basis of limit state design theory. Both objective function and constraints equation derived into terms of design variables and analysis variables generally become high degree nonlinear programming problems. Optimal algorithm that can optimize a structure synthetically earring on both analysis and design of a slab with each spanning condition. The developed algorithm is directly applied to two adjacent edges discontinuous slab, one long edge discontinuous slab, one short edge discontinuous slab and interior panel slab in order to assure validity of the algorithm and the possibility to optimize reinforced two way slabs. From this research it is found that the althorithm developed in this study is applicable to optimization of reinforced two way slabs and it converges to a optimal solution with 2 to 3 iterations regardless of initial variables. The results shows that an economical design can be possible when campared with conventional designs.