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취업증진을 위한 기사자격증 취득 및 위업자료의 체계적 구축 및 운용 방안
김성일,구경완,장종국,사공성대,황재효,류승헌 永同大學校 1997 硏究論叢 Vol.3 No.1
국가기술자격증 취득을 위한 효과적인 강의 지도를 실시하고, 이와 병행하여 기업체의 구인정보와 취업 대상자의 진로 의사 정보를 정확하게 파악하여 데이터베이스화하고 기업체에 본 대학을 상세히 홍보함으로써 취업증진을 도모한다. We make effective lectures for obtaining a national technical qualification and construct the database of job information that contain the information about companies and students respectively. Also We propagate Youngdong University to the companies for promoting the employment of students.
시민․전문가 경관 인식에 근거한 통합경관마스터플랜 수립 방안 연구
김용진, 권일, 김성희 한국교통대학교 2016 한국교통대학교 논문집 Vol.51 No.-
The need for a unified landscape starts from cities that are thus spatially and functionally linked together. It is necessary to plan and manage the city landscape more integrally because the administrative regions are different but functional and spatial closely in addition to the case of restructuring the cities into a unified form by being bound by a single living zone. This study is a basic research for establishing a comprehensive and systematic landscape plan of urban landscape over the whole city integrated in 2010, centered on integrated municipalities. For this purpose, this study conducted a survey of residents' awareness of the landscape, and based on the results, we propose implications for the establishment of a master plan integrated landscape. As a result of the analysis, the shipping factors such as roads, pedestrian roads, rivers and green spaces were found to be important factors for landscape formation for both residents and professionals. In the direction of establishing the integrated landscape master plan, it is necessary to establish the unity of the whole city and strengthen the inherent characteristics of each of the existing cities.
WET OXIDATION OF WASTERWATER CONTAINING HYDROCARBONS BY NOVEL SUPPORTED PD CATALYSTS
Woo, Seong Ihl,Cho, Se In,Kim, Doo Seong 한국화학공학회 1997 Korean Journal of Chemical Engineering Vol.14 No.6
Pd catalysts supported on TiO₂, ZrO₂, ZSM-5, MCM-41 and activated carbon were used in catalytic wet oxidation of hydrocarbons such as phenol, m-cresol and m-xylene. It was found that the Pd/TiO₂catalyst was highly effective in the wet oxidation of hydrocarbon. The activities, of catalysts with various hydrocarbon species, catalyst support, oxidation state of catalyst performed in a 3-phase slurry reactor show that reaction on Pd surface is more favorable than that in aqueous phase and that the active site is oxidized Pd in catalytic wet air oxidation of hydrocarbons. Based on the experimental results, a plausible reaction mechanism of wet oxidation of hydrocarbons catalyzed over Pd/TiO₂catalyst was proposed. This catalyst is superior to other oxide catalysts because it suppressed the formation of hardly-degradable organic intermediates and polymer.
Thermal Stability of [ B ] ZSM -5 Molecular Sieve
Woo, Seong Ihl,Hong, Suk Bong,Uh, Young Sun,Lee, Jae Kyu 한국화학공학회 1991 NICE Vol.9 No.2
The thermal stability of [B]ZSM-5 (boronsilicalite) has been examined by IR, XRD, ^(11)B MAS NMR and XPS techniques. [B]ZSM-5 and amorphous borosilicate were converted to a-cristobalite at ftigh temperatures (=750℃). However, Na-free amorphous borosilicate was not converted to a-cristobalite at 150℃. Therefcre, the presence of Naionsiat [B]ZSM-5 would determine whether this transition occurred or not. When the phase transition to a-crstoba(ite occurred, most of B atoms tetrahedrally coordinated were released from the ZSM-5 structure and migrated to the exterior surface as a boron compound having trigonal BO₃, units and oxidation states of 3.
AROMATIZATION OF PENTANE CATALYZED OVER VARIOUS METALLOSILICATES
Woo, Seong Ihl,Park, Yong Ki,Kim, Do Heui 한국화학공학회 1997 Korean Journal of Chemical Engineering Vol.14 No.4
Various metallosilicates were synthesized using a hydrothermal method and characterized by SEM, XRD, ^(29)Si MAS NMR, chemical analysis and surface area measurements. These results showed that they had a MFI structure. The pentane aromatization reaction was carried out over these metallosilicates in a continuous flow reactor at 550℃, He/pentane=3, WHSV=1.5 h^(-1) and 1 atm. Among the various metallosilicates, [Ga]ZSM-5(20) (52.3 %) and [Zn]ZSM-5(40) (37.6 %) showed higher aromatic selectivities for pentane aromatization. When [Al] ZSM-5(40) was ion-exchanged with gallium nitrate and zinc chloride, the selectivities for aromatics increased from 23.0 % to 35.5 % and to 32.7 %, respectively. The Si/metal mole ratios of [Ga]ZSM-5 and [Al]ZSM-5 were changed from 20 to 250 and NH₃ temperature programmed desorption (TPD) was carried out. As the Si/metal ratio was changed from 250 to 20, the selectivities for aromatics were increased from 5.3 % to 52.3 % over [Ga]ZSM-5 and from 10.1 % to 25.7 % over [Al]ZSM-5. NH₃TPD of [Ga]ZSM-5 indicated that the sites of medium acidity play an important role in the formation of aromatics. When H₂ and CO were added to the reactant of pentane, the production of methane and ethane increased and that of aromatics decreased.
Woo, Seong Ihl,Kim, Seo Il,Kim, Choong Hyon 한국화학공학회 1995 Korean Journal of Chemical Engineering Vol.12 No.5
CoMo/Al₂O₃ catalysts were prepared by impregnating Cobalt nitrate solution into oxidic or sulfided Mo/Al₂O₃. The properties of CoMo/Al₂O₃ catalysts were characterized by XRD, TPS, oxygen chemisorption and ESR. Catalytic activity of CoMo/Al₂O₃catalyst was evaluated by thiophene HDS as a probe reaction. When CoMo/Al₂O₃ catalyst was prepared by impregnating Cobalt nitrate solution into sulfided Mo/Al₂O₃, the interaction between Mo and alumina became weaker and the formation of synergic phase was facilitated. These structural changes may explain higher HDS activity of CoMo/Al₂O₃ catalyst prepared by impregnating Cobalt nitrate solution into sulfided Mo/Al₂O₃.
Woo, Seong Ihl,Han, Jong Dae 한국화학공학회 1993 NICE Vol.11 No.6
The coordination changes of Co^(2+) in CoNaY/NaOHs, prepared by cobalt ion-exchange and treatment with NaOH, during dehydration at various temperatures have been investigated by UV/VIS diffuse reflectance spectroscopy. After dehydration of CoNaY/NaOHs at 473 K, the DRS bands show the formation of mixed cobalt oxide species interacted with lattice oxygen. This mixed cobalt oxide species interacted with lattice oxygen decompose during further dehydration at 673 K. The strong intensities of the bands at 650, 575 and 530 nor after dehydration of CoNaY/NaOHs at 873 K indicate that a considerable amount of the cobalt ions remains in the sodalite cage with tetrahedral coordination even after dehydration at 873 K.
Woo, Seong Ihl,Kim, Seo Il,Kim, Choong Hyon 한국화학공학회 1996 NICE Vol.14 No.1
CoMo/Alo catalysts were prepared by impregnating Cobalt nitrate solution into oxidicur sulfided Mo/Al3. the properties of CoMo/AI3, catalssts were cbaracteried by XKD. TPS, oxygen chemisrptim and ESR. Catalytic activity of CoMo/AIU, catalyst was evaluated be thiophene (II)S as a prohe reaction. When CuMo/Al, catalyst was prepared by impregnating Cobalt nitrate solution into sulfided Mo/AIO. the nteraction between Mo and alumina became weaker and the formation of synergic phase was facilitated. These structural changes may explain higher HDS activity of CoMo/AIO catalyst prepared by impreKnating Cobalt nitrate solution into sulfided 110/41.