Functional Properties of Permeate Fractions Obtained from Bastard Halibut Roe Extracts by Ultrafiltration and It’s Biological Activities

Gyoon-Woo Lee1,In Seong Yoon,Su Gwang Lee,Jung-Suck Lee,Young-Mi Kang,Jin-Soo Kim,Min Soo Heu 한국수산해양기술학회(구 한국어업기술학회) 2016 한국수산해양기술학회 학술발표대회 Vol.2016 No.10

비누화 PC88A에 의한 NdCl₃와 SmCl₃용매추출의 화학모델

이만승,이광섭,이진영,김성돈,김준수 대한금속재료학회 2004 대한금속·재료학회지 Vol.42 No.10

A chemical model was developed to estimate equilibrium constant for the solvent extraction of Nd and Sm from chloride solution with saponified PC88A. The model could be employed to predict the distribution coefficient of metal from the initial extraction conditions. The model consisted of chemical equilibria, mass balance, charge balance and solvent extraction reaction. By applying the model to the experimental conditions and data, equilibrium constants for the solvent extraction of Nd and Sm were obtained. The effect of the saponification of PC88A on the extraction of Nd was explained in terms of the equilibrium constant obtained in this study and the change of equilibrium pH. The predicted distribution coefficients of Nd and Sm agreed well with those measured. (Received July 14, 2004)

공동주택 단지내 외부 소음의 예측에 관한 연구

이광태,김흥수 慶南大學校 附設 工業技術硏究所 1997 硏究論文集 Vol.14 No.2

공동주택의 건설예정지로서 소음의 면에서 문제가 없는 부지를 선정할 수 있다면 최선이겠지만, 도시역에서 편리성이 높은 지역은 거의 간선도로, 고속도로 또는 철도 등에 근접하여 결코 좋은 음환경이라고는 말할 수 없는 경우가 많다. 이와같은 지역에 집합주택을 건설할 때는 당연 소음대책을 고려하지 않으면 안된다. 우선, 음원조건의 조사로부터 시작해서 문제가 있으면 음원대책을 행하는 것이 가장 효과가 기대되지만, 일반적으로는 여러 조건으로 움직이기 어려운 경우가 많기 때문에, 많은 경우 배치계획 이후의 단지계획 중에서 처리할 수 밖에 없다. 본 연구는 이러한 점에 착안하여 건물의 단지계획에 따른 단지내의 소음값과 도로교통의 조건에 따른 소음값을 사전에 예측할 수 있는 시뮬레이션을 개발하고 예측치와 실측치를 비교 ·검증 ·분석한다. 본 연구는 소음에 대한 문헌고찰을 통하여 올바를 소음예측의 바탕이 되는 이론적 고찰을 한후, 이것을 근거로 공동주택 단지내의 외부소음 예측을 위하여 조사.분석을 아래와 같은 방법으로 행한다. ①도로소음조건에 따라 소음원의 음향파워를 예측 또는 실측한다. ②소음점과 수음점 사이의 소음전파 경로를 분석하여 이를 유니트화하고, 이를 조합하여 단지내의 소음레벨을 예측한다. ③도로소음을 패치패턴에 따라서 결정하는 ??과 교통량의 조건에 따라 결정하는 ??를 예측한다. ④부산, 마산, 창원 소재 공동주택단지를 대상으로 단지내 소음을 측정하고 예측치와 실측치를 비교.검증한다. It is the best to select out the quiet site on the stage of making a plan for the apartment. But almost all districts convenient for living in the city are of bad environment, because it usually is next to the ordinary-way and the railroad. We should seek for the means for the noise control before building the apartments on such districts. First of all, it is the most effective to investigate the acoustic problems on the side of the sound source, and to consider a counter-measure of the noise control for those problems. But those cannot be improved because it takes long times to develope the low-noised apparatus with the engine included. On those concepts, we developed the simulation for predicting the noise level on the basis of the apartment layouts and the traffic conditions. But it is difficult to calculate the noise level decided by the layouts, and so we made the multitude of units for sound propagation(Fig.22)and added them to that level. We measured the sound pressure levels of outdoor noise in four apartment sites locationed in Pusan, Changwon and Masan. And after analyzing the predicted values and the measured ones, we approximately found the differences 2∼3dB(A). Therefore it is considered that the developed simulation will be used for predicting the outdoor noise level in apartment districts. But there were a lot of problems solved on the curved road or the one where the traffic light is established.

염산용액에서 비누화 PC88A에 의한 용매추출로 Gd와 Sm의 분리

이만승,이광섭,이진영,김성돈,김준수 대한금속재료학회 2005 대한금속·재료학회지 Vol.43 No.5

Solvent extraction experiments have been performed to separate Gd and Sm from chloride solution with PC88A and saponified PC88A. The effects of extraction conditions on the distribution coefficients of Gd and Sm were investigated. The distribution coefficients of Gd were higher than those of Sm in the experimental ranges of experimental conditions of this study. A solvent extraction model was developed to predict the distribution coefficients of metals and separation factor between Gd and Sm from the initial extraction conditions. The measured distribution coefficients of Gd and Sm with PC88A and saponified PC88A showed good agreements with the predicted values. (Received March 3, 2005)

GaAs 및 InP에서의 photoreflectance 특성 연구

이정열,배인호,김인수,장광수 嶺南大學校 基礎科學硏究所 1996 基礎科學硏究 Vol.16 No.-

We investigated photoreflectance(PR) characterization of the Ⅲ-V group compound semiconductors with respect to modulation sources, those are, measured temperature and furnace annealing effect(FAE) of each sample. The band gap(??), broadening parameter(?), and dimensional number(n) of the critical point model by means of the band-to band transition were fitted by least-sqare root method for Aspnes' theoretical equation, and determined from the observed Franz-Keldysh oscillation(FKO). In particular, the Varshni equation and Bose-Einstein expression have been compared with the experimental results. After the thermal annealing, the crystallinity and the type conversion of each sample are observed and discussed.

염산용액에서 PC88A에 의한 Sm의 용매추출

이만승,이광섭,이진영,김성돈,김준수 대한금속재료학회 2004 대한금속·재료학회지 Vol.42 No.10

Solvent extraction experiments of Sm were performed from chloride solution with PC88A and saponified PC88A. Solvent extraction reaction of Sm with PC88A and the corresponding equilibrium constant were evaluated from the experimental and ionic equilibria data as follows Sm^(3+)_(aq)+ 1.5H₂A_(2,org)= SmA_(3,org)+ 3H^(+)_(aq) , K = 0.33. The predicted distribution coefficients of Sm agreed well with the experimental results. The distribution coefficients of Sm with saponified PC88A and the values of equilibrium pH depended on the initial extraction conditions. When the concentration of PC88A was in excess of that of Sm, saponification of PC88A greatly enhanced the extraction of Sm. (Received June 21, 2004)

Bulk 용접공정에서 분말 용가재의 성분에 따라 만들어진 하드페이싱부의 화학분석, 미세조직 및 경도

김광수,이규도 순천향대학교 부설 산업기술연구소 2001 순천향 산업기술연구소논문집 Vol.7 No.1

This research was carried out to synthesize the powder type filler materials for bulk welding process. The powder type filler materials were synthesized with raw materials such as high/low carbon ferro-Cr and also high/low carbon ferro-Mn powders. Three types of powder type filler materials were prepared. And also, three different combinations of wire and filler powders were selected such as 1.5:1, 1.9:1 and 2.3:1 for the ratio of filler powder:wire. The evaluations were performed by chemical analysis, microstructural investigation and microhardness measurements. The results indicated that the characteistics of synthesized powder displayed same as that of the commercial powder. The microhardness value was higher than that of commercial powder. Further, the M_(7)C_(3) carbide providing higher hardness for hardfacing was dominant in the synthesized powder. The best combination of the powder and wire was the ratio 2.3 : 1.

Se/CS₂용액으로 처리한 n-GaAs 표면의 Photoreflectance 특성에 관한 연구

장광수,김인수,배인호,한병국,이정열 嶺南大學校 基礎科學硏究所 1997 基礎科學硏究 Vol.17 No.-

The surface of of n-GaAs(100) was treated using 1.5㎎/100ml solution of Se/CS₂. The passivation of the surface of this sample was investigated by photoreflectance(PR) experiment. After the surface treatment, the samples were annealed between 300 to 700 ℃ in a N₂atmosphere for 10 min. From the obtained Franz-Keldysh oscillations, we have evaluated the surface electric field(E?) and built-in voltage(V??). The density of surface states(Q??) and surface Fermi level(E??) of n-GaAs treated with CS₂and Se/CS₂solution were determined 1.78 ×10??㎝?? , 1.81×10?㎝? and 0.734 eV, 0.737 eV, respectively. After annealed at 600 ℃, These values were about 45% and 13% smaller than those in unannealed samples. It has found that the passivation of surface occured when the surface of the sample had been treated with Se/CS₂ solution and annealed from 400 to 600 ℃. This is ascribed to effects due to activation of elemental Se on the surface.

高層아파트 主立面 디자인에 관한 硏究 : 視知覺的 측면을 중심으로

金正在,李光永,姜智秀 경북대학교 산업기술연구소 1991 産業技術硏究誌 Vol.19 No.-

The aim of this study is to search for correlation of visual experience with the design elements of main facade in high-rise apartment house and their formal characteristics. The main interest is to know how visual experience changes in accordance with the variation of formal characteristics and which formal characteristics have great influence on visual experience in high-rise apartment house.

만성 어깨 통증을 유발한 양측성 탄력섬유종 1예

장재훈,김강민,김태우,정현광,조윤성,서수홍,이충원 고신대학교의과대학 2007 고신대학교 의과대학 학술지 Vol.22 No.2

Elastofibroma is a rare, benign, soft-tissue tumor that usually located at the inferior pole of the scapula. It is important to differentiate this tumor from other soft-tissue tumors such as sarcoma, fibromatosis, metastatic tumor, and lipoma. A 57-year-old female who complained of chronic both shoulder pain was admitted to our hospital with bilateral, soft tissue masses located in the subscapular region. Ultrasonography, CT and MRI images showed bilateral inhomogeneous tumors that measured 7×3×6 cm. This was compatible with elastofibroma by fine-needle aspiration biopsy. Shoulder pain was gone with decreasing size of masses after conservative treatment and avoiding workload to the shoulder. We present this case with a review of literatures.