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          • 恥骨後前立腺剔出術의 새로운 方法에 關한 硏究

            李應秀,金世景 우석대학교 의과대학 1971 우석의대잡지 Vol.8 No.1

            Since the bleeding is one of the most distressing problems in prostatic surgery, emphasis has to be given in bleeding control during and after surgery to evaluate one technique of prostatectomy to another. From this view point, the author developed a new techinque of retropubic prostatectomy using U-shaped prostatic capsular incision and preliminary ligation of capsular vessels along the incision and this technique was applied in 16 cases of benign prostatic hypertrophy, and excellent results were obtained in all cases. The experiences obtained through this new technique in these cases are summarised as follows: 1) Since hypertrophied prostate expands toward upward and to rectal side, the U-shaped capsular incision of the prostate is more adequate than ordinary transverse capsular incision or vertical incision, for wider exposure and complete removal of the glands. 2) After removal of prostate, the prostatic bads are clearly observed and the bleeding points were easily recognized and controlled through U-shaped capsular incision. 3) Through preliminary vessel ligation of prostatic capsule, not only capsular incision is performed bloodlessly, but also three fourth of capsular bleeding during and after enucleation is already controlled.

          • 正常 및 異常妊娠에 있어서의 尿中Estriol에 關한 硏究

            李敬子 우석대학교 의과대학 1971 우석의대잡지 Vol.8 No.1

            Urinary estriol estimation is very helpful for fetal program during pregnancy although it has not been widely used in Obstetrics. In this paper the fluctuations of maternal esteriol both in normal and abnornal pregnancies, hypertensive or toxemic state, intra-uterine fetal death or similar conditions. and of post-dated pregnancy were studeid. The data presented here are based on 52 pregnant patients examined in Ewha Woman's University Hospital, Seoul, Korea. Twenty-four hour urine was collected and analyzed by the Brown method. At the same time the vaginal smear was taken from mid-lateral portion of vaginal wall and stained by papanicolaou technique. The obtained results are as follows: 1. Urinary estriol in normal pregnancy gradually increases in the 20th week of gestation up to term, and the mean estriol level during the period of 36th week to term was 15.6㎎/24hours. No less than 4㎎/24hours was observed in or after 26th week of gestation in normal conditions. 2. Generally, in toxemia or hypertensive complication of pregnancy, the estriol excretion decreases significantly(P<0.05) with the mean value of 8.11 ㎎/24hours±S.E. 0.91 in the 37th week up to term. There appears tendency of chronic placental insufficiency or fetal distress in toxemia of pregnancy on the basis of the decreased fetal weight as well as poor Apgar scores. 3. In general, the higher the systolic blood pressure the greater decrease of the urinary estriol level. There was no significant difference between mild and severe toxemias in the urinary estriol level. It is interesting to note that once the systolic blood pressure is elevated up to 150㎜Hg, the estriol excretion decreases to the same level as that at a much higher level of systolic pressure, such as 160-200㎜Hg. 4. The levels of maternal urinary estriol in preeclampsia and eclampsia were not significantly different. No fetal loss was encountered even in preeclampsia with a markedly decreased estriol level. On the other hand, it was noted that a greater number of fetal loss was encountered in eclampsia with relatively higher estriol. 5. Vaginal cytologic smear test is a good method for the evaluation of the urinary estriol level and it is an adjunct of the fetoplacental function test. 6. In the last month of pregnancy, although there was no recognizable correlation in between the fetal weight and the urinary estriol level in toxemia of pregnancy as the fetal weight increases. 7. In toxemia of pregnancy, there was no correlation between the urinary estriol and the uric acid level. 8. Urinary estriol excretion in the intra-uterine fetal death without hypertensive complication of pregnancy showed significantly lower level, less than 2.0㎎/24hours. On the contrary, the estriol level in the intra-uterine fetal death in convulsive or eclamptic woman did not decrease to such a remarkable degree as in the intra-uterine fetal death in non-toxic state, suggesting a restriction in the fetoplacental evaluation. Vaginal cytology in the intra-uterine fetal death gives an information of the level of urinary estriol, and shows a placental insufficiency picture. 9. The so called "post-dated pregnancy" merely based on the menstrual age did not invariably show a true overmaturity, hormonally or cytologically.

          • 칼라 제도법 및 제도치와 칼라형태와의 관계

            김희영,양진숙 又石大學校 1990 論文集 Vol.12 No.-

            To find out the relations of drafting methods & measurements of collar patterns and collar forms, the drafting and wearing tests to the flat collar, shirts collar and dutch collar were performed. The results were as follows: 1) In case of flat collar, the larger the overlaped measurement of shoulder was, the smaller the curvature of pattern was and the measurements of collar stand and interval of collar ends get smaller on wearing it. 2) In case of shirts collar, the larger the raised measurement of center back was, the larger the curvature of pattern was and the measurements of collar stand and interval of collar ends get smaller on wearing it. 3) In case of dutch collar, the larger the laid measurement of center back was, the larger the curvature of pattern was and the measurements of collar stand and interval of collar ends get smaller on wearing it. 4) The rolled line of flat collar was more curvilineal than that of shirts collar and that of dutch collar was near straight in front neck.

          • 發育鷄腦組織의 脂質代謝에 關한 硏究

            申壬雨 우석대학교 의과대학 1968 우석의대잡지 Vol.5 No.1

            In the present study, the metabolism of phospholipids of developing chick embryo brain has been studied, being compared with the levels of free and esterified cholesterol. Fertilized hen's eggs of a White Leghorn strain were incubated in a humidified atmosphere at 38-39℃. Brain specimens from 14th incubation day to 2 weeks after the hatching chick were examined. 1. The levels of total phospholipids in the chick embryo brain of the 14th incubation day was about 19㎎ per g wet tissue and followed by a marked increase until the 18th incubation day(33㎎/g wet tissue), and dropped down at 20th incubation day. Again, the concentration of total phospholipids began to increase markedly at hatching (corresponding to 21th incubation day), and reached its maximal level (41㎎/g wet tissue) at the 10th post-hatching day. 2. The concentration of phosphatidylcholine was 3㎎ per g wet tissue at 14th incubation day and was followed by a gradual increase until the 10th post-hatching day. 3. The level of phosphatidylethanolamine maintained at the same level until the hatching. The time course changes in the concentration of phosphatidylethanolamine in the brain of post-natal chick showed a similar pattern to that of phosphatidylcholine. 4. The concentration of phosphatidylinositol was 2.6㎎ per g wet tissue at 14th incubation day and dropped slightly during the subsequent incubation period and showed a gradual increase and attained its peak 10 days after the birth. 5. The level of total cholesterol in the chick embryo brain of the 15th incubation day was 7.5㎎ per g wet tissue and followed by a gradual increase until the hatching and maintained at the same level at 7 days post-hatching period. The changes in the concentration of free cholesterol during development showed a almost same pattern to that of total cholesterol. The level of esterified cholesterol remained unchanged throughout at pre and post-natal periods. 6. Included in the discussion are the relationship between phosphatidylcholine concentration and cholesterol esterifying capacity.

          • 서스펜션중에서 終着沈降速度는 類似하나 密度가 다른 2種粒子들의 相對沈降速度

            李基鐘 又石大學校 1994 論文集 Vol.16 No.-

            There have been a lot of studies on the settling characteristics of particles with same density in suspensions, but few studies on the settling characteristics of the mixed particles of different density in suspensions. An experimental study was carried out to investigate the correlation among settling characteristics of particles with different shapes and density in monodisperse suspensions and of the mixed particles with similar terminal falling velocity but different density in binary suspensions. As a result, the slope index a values in monodisperse suspension of non-spherical particles were much larger than the values obtained from Richardson-Zaki equation. And the settling rate of each two particles with similar terminal falling velocity but different density in monodisperse suspension was appeared by middle values between the settling rate of lower settling interface and that of upper settling interface in the binary suspension of the mixture of the above two particles. The reason is that effective buoyancy force acting on the individual particles is determined by the density of the suspension rather than by that of the liquid alone.

          • 4축 및 5축 기계가공에서 최적방향의 결정

            하종성 又石大學校 1995 論文集 Vol.17 No.-

            When gaussian mapping is applied to normal vectors of a given surface, we can take an approach of spherical geometry for solving numerically controlled machining problems. In this paper, we formulate machinability problems on 4- and 5-axis environments into geometric problems on the sphere; determine whether a band, which is a spherical region bounded by two circles, can contain a set of points on the sphere. A method is presented for checking the feasibility in O(n) time, Furthermore, we prove that the found direction is optimal for minimizing the cusp height resulting from machining.

          • Coarse Suspension중에서 粒子의 크기가 流體力學的부피와 沈降速度에 미치는 영향

            李基鐘,張淳哲 又石大學校 1994 論文集 Vol.16 No.-

            An experimental study was carried out to investigate the setting rate of irregular crystals of different sizes in monodisperse suspensions and the effect of particle size on the hydrodynamic volume and the settling rate in coarse suspensions. As a result, the slope index n values, the slope obtained from the line of logarithm of settling rate versus logarithm of voidage, were larger than the values obtained from Richardson-Zaki equation and the slope index n values increase with the particle size decreasing. The volume of fluid held by the particles is almost propertional to its mean particle diameter. It is possible that the envelope of liquid behave as a soft sheath or cution which can be penetrated by other particles during interaction and that each particle possesses similar physical properties to those of a soft sphere.

          • 광합성 세균을 이용한 주정 폐수처리

            김기은,조문구 又石大學校 1995 論文集 Vol.17 No.-

            Five photosynthetic bacteria were finally isolated from nature. They showed higher degrading abilily of major organic acids in distillery wastewater such as acetic acid, propionicacid, and butyric acid under anaerobic light corditions(5,000lux, 30℃). Acetic and propionic acids were degraded in first, and then butylic acid was followed with the increasement of pH up to 8.5, All of the organic acids were completely degraded within 60 hours, and the highest value of the specific growth rate(μmax) was 0.29h^-1.

          • 양모 폴리에스테르 혼방직물의 역학적특성과 태에 관한 연구

            김경애,김성희 우석대학교 자원개발연구소 1996 자원개발연구소논문집 Vol.1 No.-

            To determine the change of the mechanical properties of the wool/polyester blend fabrics in promotion to blend ratio and weave type. 16 mechanical properties and hand value were measured on 5 blend fabrics by KES-F system. Statistical analysis was performed using T-test, ANOVA. The results were as follow : (1) There was significant difference in tensile, bending, shearing, surface, compression according to the blend ratio. (2) According to the weave there was significant difference in tensile bending surface compression in the wool/polyester blended fabrics. 3. There was significant difference in stiffness according to the blend ratio. (4) According to the weave there was significant difference in anti-drape stiffness crispness fullness in the polyester blended fabrics.

          • 양모/polyester 혼방직물의 태에 대한 연구

            김경애 又石大學校 1993 論文集 Vol.15 No.-

            Ten wool/polyester blend fabrics were assessed by 57 persons judges for sensory hand qulity and preference. Data analyzed by Pearson correlation coefficients and by paired t-test. The semantic differential was used to measure sensery hand qualities and 7 point scale to measure hand prefernce. 1. The semantic differential functioned well for this research, except that light/heavy and thin/thick. 2. Judge's response to sensory hand qualities seemed to be affected by fiber content type. For wool fabrics, the association was significant at p<0.05 level for scratchy/silky and at p<0.01 level for hard/soft. For polyester fabrics the association was significant at p<0.05 level for limp/crisp. 3. Sensory hand qualities assessed firm and soft more by woman's jurge than man's and heavy and soft more by major's response than minor's. 4. Jurge's preference fabrics were wool 80%/polyester 20% fabric and least preferenced were polyester 100% fabric. In general, judges preferred more by wool fabrics than polyester.

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