대기오염 유발원인의 문제점과 기술적 대안

임병일 환경보전협회 1992 환경정보 Vol.14 No.5

개인용 컴퓨터를 이용한 자기공명영상과 SPECT의 Image Viewing Station

임병일 대한영상의학회 1996 대한영상의학회지 Vol.35 No.3

Purpose : Macro language was programmed to analyze and process on Macintosh personal computers GE MR imagesdigitally transferred from the MR main computer, with special interest in the interpretation of information suchas patients data and imaging parameters under each image header. By this method, raw data(files) of certainpatients may be digitally stored on a hard disk or CD ROM, and the quantitative analysis, interpretation anddisplay is possible. Materials and Methods : Patients and images were randomly selected. 4.X MR images weretransferred through FTP using the ethernet network. 5.X and SPECT images were transferred using floppy diskets. Toprocess transferred images, an freely distributed software for Macintosh namely NIH Image, with its macrolanguage, was used to import images and translate header information. To identify necessary information, aseparate window named "Info-txt", was made for each image series. MacLC, Centris650, and PowerMac 6100/CD,7100/CD, 8100/CD models with 256 color and RAM over 8Mbyte were used. Results : Different versions of MR imagesand SPECT images were displayed simultaneously and a separate window named “Info-txt” was used to show allnecessary information(name of the patient, unit number, date, TR, TE, FOV etc.). Additional information(diagnosis,pathologic report etc.) was stored in another text box in “Info-txt”. The size of the file for each image planewas about 149Kbytes and the images were stored in a step-like file folders. Conclusion : 4.X and 5.X GE Signa 1.5Timages were successfully processed with Macintosh computer and NIH Image. This result may be applied to manyfields and there is hope of a broader area of application with the linkage of NIH Image and a database program.e program.

Citrate법을 이용한 수산화아파타이트 분말합성 및 소결특성

임병일,최세영,정형진,정형진,오영제 한국세라믹학회 1996 한국세라믹학회지 Vol.33 No.9

Hydroxyapatite powder was synthesized by a citrate method, . Char-like precursor composed of Ca8(HPO4)2(PO4)4.5H2O (OCP) and CaCo3 was found via viscous resin-like intermediate by heating the mixed aqueous solution of Ca(NO3)2.4H2O(NH4)2HPO4 and citric acid. Resulted powder was transformed into hydroxyapatite phase by firing over 120$0^{\circ}C$-135$0^{\circ}C$ for 4 hr using the powder calcined at 90$0^{\circ}C$ for 10 hr composed of mostly single hydroxyapatite phase. The sintered densities increased with firing temperature up to 130$0^{\circ}C$ but the highest relative density was about 94% of theoritical value. indicating the presence of closed pores. The maximum 96 MPa of flexural strength was obtained at 120$0^{\circ}C$ firing but the flexural strength showed lower values over the above sintering condition. Vitro test was performed by immersing of two jointed specimens in SBF for seven days and adhesion was observed between two specimens.

연구논문초록(’81-’90) : Al - Zn - In 계 유전양극의 성능에 미치는 Cd , Ca 및 Ga 첨가와 열처리의 영향

임병일,전중석 한국부식학회 1991 Corrosion Science and Technology Vol.20 No.1

This paper is an attempt to improve the performances of Al alloy anodes which were made of the second grade of KS D2304 aluminium ingot. The effect tests of adding Cd, Ca or Ga element and heat treatment of the Al anodes of Al-2.5Zn--0.02In system were made by measuring the anodic polarization potential, current efficiency and by observing the corrosion pattern of the anodes in the 3% NaCI solution for 10 days and 40 days. The results of the performance tests are as follows : 1) The performance tests of Al alloy anode should be a long-term test, for a short-term test of 10 days is not enough. 2) The performances of Al alloy anodes containing 0.01% of Cd, Ca or Ga were better than those containing 0.02%. 3) The suitable annealing temperature of the Al alloy anode containing 0.01% Ca was 550℃, but the performances of other anodes were rather fine than when they were not annealed. 4) Al alloy anodes of the good performances, which had moderate anodic potential, were more than 85% in current efficiency and were excellent in corrosion pattern, were the Al-25Zn-0.02In-0.01Ca anodes which were annealed on 550℃ or not annealed.

사출성형을 통한 CNT 및 Al Powder를 이용한 방열 및 차량용 경량 복합재료 제작 연구

임병일,윤재웅,Leem, Byoung-Ill,Yun, Jae-Woong 한국금형공학회 2019 한국금형공학회지 Vol.13 No.3

In this study, a study was carried out that could effectively produce a heat dissipation effect on plastic materials. Using carbon nanotube (CNT), aluminum powder and plastic, the material properties were tested in 2 cases of compounding ratio. The test sample mold was designed and constructed prior to the experiment. The experiments include tensile strength, elongation rate, flexural strength, flexural elasticity rate, eye-jaw impact strength, gravity and thermal conductivity. Results from 60% and 70% mixture of aluminium to plastic were tested, and a 10% less combined result was a relatively good property. For research purposes, the heat dissipation effect and light weighting obtained a good measure when the combined amount of Al was 60%.

말초성 신경초종의 자기공명영상: 병리학적 소견과의 비교

임병일 대한영상의학회 1995 대한영상의학회지 Vol.33 No.6

Purpose : To characterize the MRI appearance of the peripherally located schwannoma as compared withpathologic findings. Materials and Methods : 11 cases of 13 lesions of the schwannoma confirmed by pathology wereanalyzed, retrospectively. T1,T2 and Gadolinium-enhanced T1 weighted sagittal and axial images were obtained. Thesignal intensity, contour of lesion, and relationship with surrounding tissue were analyzed. All cases werecorrelated with MRI and pathologic findings. Results : In 9 Out of the 11 cases schwannoma were connected to themain nerve trunk course. Among them, tumors were located centrally in 6 cases and eccentrically in 3 cases. MRfindings of schwannoma were iso signal intensity on T1WI(8 cases) with muscle intensity, high signal intensity onT2WI(all cases), strong heterogenous enhancement in all cases. 8 cases showing heterogenous appearance on T2WI,showed mixture of Antoni-A and B area and multifocal hemorrhage. Central low and peripheral high signal intensityon T2WI(Target sign) was mainly high cellular component in the central portion and diffuse myxoid degeneration atthe periphery, pathologically. Reversed target appearance(central high, peripheral low on T2WI) revealed centralcystic degeneration with low cellular component and hemorrhage in the central portion, and high cellular componentat the periphery. Linear band-like low signal intensity on T2WI, suggesting capsule of the schwannoma, was not thetrue capsule proven by pathology. Thin true capsule was not visualized on T2WI. Conclusion : MR appearance ofschwannoma was non-specific. The signal intensity on T2 weighted MR imaging was determined by the presence ofmultifocal hemorrhage, focal cystic and myxoid degeneration, admixture of Antini-A and B area.

Al - Zn - In 계 충전양극의 성능에 미치는 Cd , Ca 및 Ga 첨가와 열처리의 영향

임병일,전중석 ( B . I . Lim,J . S . Jeon ) 한국부식방식학회 1982 Corrosion Science and Technology Vol.11 No.1

鑄物用銑製鍊時의 成分管理에 對한 考察

林炳鎰 成均館大學校 1975 論文集 Vol.20 No.-

鑄物用銑을 決定지우는 가장 重要한 元素는 Si%이다. 普通 1.2% 以上의 Si含有量이 要求되고 있으나, 이 Si%이 管理는 高爐에서, 가장 어려운 問題이기도 하다. 三和製鐵株式會社에서 鑄物用銑製鍊時에 問題가 된 銑鐵中 Si%의 變動 및 그의 管理方法에 對하여, 實績을 土臺로 各種의 要因解析을 하였으므로 여기에 報告한다. The silicon contents were the most important factor at determining the properties of the foundry pig iron in blast furnace. As a general rule, the silicon content was required of 1.2%. However, in Blast furnace the control of silicon contents and these were the problem of most difficults. This is a report on the variations of the silicon contents and these contral methods on smelting in blast furnace of SAMWHA IRON & STEEL COMPANY. The most important factor affecting silicon contents is considered stable condition of furnace operation.

염기도를 (鹽基度) 달리하는 각종 소결광의 (燒結鑛) 환원속도

임병일,이상학,조용환,소야양일 (小野陽一) 대한금속재료학회 1984 대한금속재료학회 학술대회 개요집 Vol.1984 No.0

燒結鑛의 被還元性에 미치는 鑛物組織과 氣孔組織의 影響

林炳鎰,前田敬之,小野陽一 成均館大學校 科學技術硏究所 1992 論文集 Vol.42 No.2

The effects of mineral composition and pore structure on the reducibility of sintered iron ores were studied using sintered iron ores having six different basicities, it was found that : 1) For small cracked sinters, the distribution of small cracked diameters and the presence ratio of micropores were almost constant irrespective of basicity change. hence, in the microscopic observation and measurement of the distriution of small cracked diameters for specimens having various basicites, it was found that there were changes of the mineral structure with negligible change of small cracked structure. 2) The reduction rate of small cracked sinters corresponded mineral structures well, and sintered ores of E,C and D, which were mainly composed of hematite and calcium ferrite, had better reducibility than those of F,A and B, which were mainly composed of magnetite and slag. Especially, the sintered ore of F, which had the highest FeO content as 11.7% and the lowest basicity as 1.12, showed extremely poor reducibility. 3) The reduction rate of lumpy sinters could not be determined by the mineral structure alone, but was clearly affected by porosity, pore structure and, especially, the presence ratio of macropores which supplied reducing gases for the mineral structures.