有機色素分子와 水容性 高分子 物質에 鹽 및 界面活性劑 添加效果에 관한 吸收分光 光學的 硏究

崔虎燮 群山大學校自然科學硏究所 1986 自然科學硏究 Vol.1 No.-

The structural effect of polyanions and anionic surfactant (AOT) on the binding type of Methylene Blue (MB) was investigated spectrophotometrically. MB was bound to poly (potassium strenesulfonate) (PSS) and poly (Sodium 4-vinyl phenylsulfate) (SVS) in the dimeric or slightly aggregated form and to poly (sodium vinylsulfonate) (SVF) and poly (potassium vinylsulfate) (PVS) in the highly aggregated polymeric form. The aggregation of MB-reversed micelles system is also similiar to the case of MB-poly-anion. In the case of reversed micelles the amount of water destroys MB aggregation.

Poly(ethylene Terephthalate) 纖維의 알카리處理에 의한 柔軟加工에 관한 硏究 : 減量促進劑 첨가에 의한 重量變化

金愛順 群山大學校自然科學硏究所 1986 自然科學硏究 Vol.1 No.-

If Poly (ethylene Terephthalate) fibers are treated in a solution of sodium hydroxide, they dissolved successively from the their surface, so the handle of PET fibers is improved by the loss of weight. In this study, the effect of only sodium hydroxide treatment and pretreatment of accelerating agent on the hydrolysis of PET fibers were investigated. 1) According to the increase of treating sodium hydroxide concentration, time and temperature, weight loss is increased. 2) The PET fibers was pretreated with amines and organic solvents, the amines used in this experiment were 40% methyl amine, 70% ethyl amine and the organic solvents were 5% benzyl alcohol, 5% buthyl alcohol. The weight loss was remarkably increased in pretreatment of accelerating agent rather than in only sodium hydroxide. 3) The weight loss increased in the order, the PET fibers pretreated with 70% ethyl amine> 40% methyl amine > 5% benzyl alcohol > 5% buthyl alcohol > only sodium hydroxide. From this results, we can assume amorphous region is more selectively degraded than crystal region in PET fibers pretreated with amines and swellen structure of PET fibers formed during the pretreatment with organic solvent, so degradation reaction occurs in the surface as well as in the inferior region of PET fibers when it is treated with sodium hydroxide solution.

분산시스템 구성에 관한 연구

이연식,박기홍 群山大學校自然科學硏究所 1987 自然科學硏究 Vol.2 No.-

Recently, distributed system has become the main issue in data processing system. And many researchers has supposed and presented the result of their studies. In this paper, we divided the function of distributed system into three parts-information processing, database processing and network processing. And, we supposed the configurations of each functions by analysis of their structures and characteristics.

THE INSTITUTE OF NATURAL SCIENCES KUNSAN NATIONAL UNIVERSITY

Ryu,Moon-Hee,Choi,Moon-Sul 群山大學校自然科學硏究所 1986 自然科學硏究 Vol.1 No.-

속도 방정식 즉 Schlogl Model Ⅰ, Ⅱ를 만족하는 변수에 대한 Fokker-planck 방정식의 근사해인 확률분포함수를 구하였고 그 결과를 Suzuki가 제안한 방법과 비교 설명하였다.

ANISOTROPY OF THE DIURNAL VARIATION OF COSMIC RAY INTENSITY

RYU,J.Y. 群山大學校自然科學硏究所 1987 自然科學硏究 Vol.2 No.-

宇宙線變動의 非等方性은 高速太陽風과 行星間 磁場에 依하여 形成된다. 高速太陽風(HSS) 은 太陽表面의 北極과 南極의 코로나홀에서 끊임없이 불어내며 이와같은 太陽風은 再歸性型이다. 이 外에도 太陽풀레어에 依한 것도 있다. 行星間磁場(IMF)의 方向은 HSS에 隨伴되어 北極코로나홀(NCH)에서의 太陽風은 Away型 IMF, 南極코로나홀(SCH)에서의 太陽風은 Toward型 IMF을 形成한다. 本 論文은 HSS와 宇宙線 變動의 非等方性과의 關係를 探求한다. 太陽活動의 衰退期인 1974년은 코로나홀의 位置가 明確하고 比較的 太陽홀래어가 드문 해로써 太陽風의 27日 周期性이 明確한 해로 地球上 17개 宇宙線 中性子 모니타 觀測所의 資料를 써서 太陽風과 宇宙線의 非等方位性을 檢討한다. 宇宙線變動의 日日變化를 最適化方法을 써서 自由空間에서 非等方性을 決定하였다. HSS는 NCH, SCH마다 R, H, D, Q 4개의 부분으로 나누어서 각부분에서의 宇宙線의 非等方性의 振幅과 位相을 計算해냈다. 位相으로써 18hr LT의 非等方位가 確然하며 이는 宇宙線 强度의 對流-擴散의 理論의 强力한 뒷받침이 된다. 非等方性의 堅度스펙트럼은 양의 符號를 띄고 있다. 振幅은 HSS의 R, H部分의 특기할만한 區別은 볼 수 없고 D.Q部分에서만은 SCH에서의 값이 NCH에서의 값보다 작다. 大體的으로 振幅은 部分에 따른 特異할만한 區別은 없다고 하겠다. Solar diurnal anisotropy of cosmic rays associated with high-speed solarwind streams (HSS) are investigated. Characteristics of modulation of the solar diurnal anisotropy by HSS are examined mainly in 1974, using data from the worldwide network of cosmic-ray neutron monitors(17 stations). From a daily basis analysis based on best-fitting method, it is found that the amplitudes of anisotropy depend remarkably on the location of the coronal holes, from which HSSs are emitted.

EVALUATION OF THE ℓ.I INTEGRALS ON HYPERFINE INTERACTIONS

Choi,Ho-Seop,Kim,Dong-Hee 群山大學校自然科學硏究所 1988 自然科學硏究 Vol.3 No.-

공통 좌표계로 표시된 4p 원자궤도 함수의 전자 파동 함수에 대한 초미세 상호작용(hyperfine interactions)중 ℓ.I적분의 지름부(radial part)와 각부분(angula part)을 계산하여 이들을 analytic form으로 나타내었다. 이 ℓ.I 적분은 4p 원자궤도 함수에 대한 NMR 화학이동을 계산하는데 이용할 수 있다. For the electronic wave functions for |4p> atomic orbitals expressed in common coordinate system, both the radial part and the spherical polynomial part of the ℓ.I integrals on hyperfine interactions have been evaluated and expressed in analytical form. The ℓ.I integrals may be used to calculate the NMR chemical shift for |4p> atomic orbital.

動物의 神經系 구성 蛋白質에 관한 生理化學的 比較 연구

金智植 群山大學校自然科學硏究所 1988 自然科學硏究 Vol.3 No.-

실험동물인 쥐, 토끼, 닭, 개구리, 붕어의 神經系 蛋白質의 특성을 규명하기 위하여 14% SDS-PAGE gradient gel 電氣泳動法을 이용하여 泳動分劃帶, 分子量 측정 및 각 실험동물의 主分劃帶 蛋白質의 아미노산 조성을 分析 하였다. 실험동물 별로 泳動帶의 染色强度 및 幅에서 특이한 電氣泳動像으로 種 特異性을 볼 수 있었다. 泳動帶 分劃數는 쥐, 토끼, 닭, 개구리와 붕어에서 각각 28, 21, 24, 16 및 17개로 分離되었다. 分子量 별로 본 band의 分布는 쥐가 17500∼165000 daltons, 토끼가 15000∼115000 daltons 닭이 15000∼135000 daltons, 개구리가 15000∼115000 daltons, 붕어가 11500∼105000 daltons 사이에 있음을 확인하였다. 각 실험동물들의 腦조직 蛋白質 구성은 11500∼49000 daltons 사이가 전체에 63% 비교적 적은 分子量의 蛋白質로 구성되었음을 알았다. Amino acid은 共히 Aps., Glu.,이 비교적 많은 量이 있었고 반면 Val., Met., Tyr.등은 小量으로 존재하고 있음이 규명되었다. Amino acid의 組成은 Asp., Thr., Ser., Glu., Gly., Ala., Val., Met., Ile., Leu., Phe., His., Lys., Arg.등이 共通으로 존재하였고 Pro.는 쥐, 토끼, 붕어 에서만 나타났으며 닭과 개구리에는 존재하지 않았다. 그리고 Try.은 쥐, 토끼, 닭에서는 존재하고 있었으나 반면 개구리와 붕어에서는 나타나지 않았다. In order to investigate composition of soluble nervous protein from rat, rabbit, chicken, frog and fish, electrophoretic study were performed for protein patterns, molecular weight and composition of amino acids by SDS-PAGE gradient gel electrophoresis. The number of protein bands, mobility, density of staining and width of protein bands appeared to be specific species. The number of soluble nervous protein bands from rat, rabbit, chicken, frog and fish exhibited 28, 21, 24, 16 and 17 respectively. The distribution of soluble nervous protein bands according to molecular weight conform 17500 to 165000 daltons in rat, 15000 to 115000 daltons in rabbit, 15000 to 135000 daltons in chicken, 15000 to 115000 daltons in frog and 11500 to 105000 daltons in fish. The molecular weight of soluble nervous protein constituted 63% among the all experimental animals at 11500 to 49000 daltons in molecular weight, so it were knew protein of comparative low molecular weight. The most abundant amino acids was Aps. Glu. but exhibited less for Val. Met. Tyr. etc. The composition of amino acids were analysed commonly Asp. Thr. Ser. Glu. Gly. Ala. Val. Met. Ile. Leu. Phe. His. Lys. and Arg., and Pro. exhibited rat. rabbit and fish only but chicken and frog were not observed, also Try. exhibited in rat, rabbit and chicken only but frog and fish were not observed.

Shared memory를 갖는 멀티프로세서 시스템 구현에 관한 연구

박기홍 群山大學校自然科學硏究所 1988 自然科學硏究 Vol.3 No.-

In this paper, the implementation of multiprocessor system based on the shared memory is described. The hardware which is accessible to systems is designed. Also, we design the software which evaluates the performance of systems and maintains systems. Multiprocessor system based on the shared memory will be used variously.

光彈性技法을 利用한 應力强度係數 測定

白泰鉉 群山大學校自然科學硏究所 1990 自然科學硏究 Vol.5 No.-

Coefficients of power series type Williams equations, together with the exact origin of the crack, were calculated from data sets on the fringe sharpened isochromatic loops in the vicinity of the crack tip. Results of calculated values were evaluated by comparing experimental data points with the regenerated theoretical fringe loops. Accuracy evaluation indicated that the first four terms of Williams equations are sufficient to describe the stress field in the vicinity of the crack tip for both Mode I and Mixed Mode cases.

韓國産 동자개科 魚類의 分布와 由來

李忠烈 群山大學校自然科學硏究所 1990 自然科學硏究 Vol.5 No.-

韓國産 동자개科 어류는 西南海岸으로 流入되는 河川 및 주변 水系에 널리 서식하고 있었는데 이들 중에서 Pseudobagrus fulbidraco와 P. koreanus는 臨津江, 漢江, 錦江, 萬頃江, 榮山江, 蟾津江과 주변 水系에 널리 分布하고 P. brevicorpus는 洛東江 水系에만 서식하였다. 한편 Leiocassis longirostris와 L. ussuriensis는 臨津江, 漢江, 錦江에 分布하고 L. nitidus는 臨津江, 漢江, 錦江, 萬頃江, 榮山江 등에 分布하고 있어 Leiocassis屬 魚類는 韓半島의 榮山江에서부터 북쪽의 서해로 流入되는 大型河川 中下流域에 分布하고 있었고 Pseudobagrus屬 어류는 태백산맥 동쪽의 동해로 流入되는 河川을 除外한 全水系에 비교적 넓게 分布하고 있는데 P. brevicorpus가 洛東江에만 分布하고 있는 점은 生物地理學上 매우 중요한 意味가 있다고 사료된다. 한편 우리나라에 서식하고 있는 동자개科 어류는 원래 우리나라의 서남해안으로 유입되는 하천 형성이 中國大陸의 古黃河 水系의 일부분으로서 여기에 서식하는 어류들도 자연 中國大陸의 古黃河 水系에서 由來되었다고 思料된다. The family Bagridae in south-westhern rivers of Korea was classified into 2 genera and 6 species : Pseudobagrus fulvidraco, P. Koreanus, P. brevicorpus, Leiocassis nitidus L. ussuriensis and L. longirostris. P. koreanus and P. brevicorpus of them are endemic species of Korea. Genus Leiocassis from Korea has been distributed mainly in Imjin river, Han river, Kum river and Yongsan river, and genus Pseudobagrus has been widely distributed in all south-westhern rivers but P. brevicorpus only in Naktong river. Today family Bagridae in Korea is considered to be originated from Indo-China catfish, through the Paleo-Hwangho rivers.