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한국 석회석의 열분해특성 및 가열에 의한 상변화에 관한 연구
한기성,안기상,최롱,Han, Ki-Sung,Ahn, Ke-Sang,Choi, Long 한국세라믹학회 1983 한국세라믹학회지 Vol.20 No.1
The investigations have been carried out to study the characteristics of limestone using in Korean cement industry with prime interests in the dissociation and thermal phase changes of limestone between 90$0^{\circ}C$ and 140$0^{\circ}C$ The range of decomposition temperature of limestone was 840-87$0^{\circ}C$ and it was considered that the temperature was lowered by impurities in the limestone. The more the impurities and the finer the grain size of quartz in limestone the lower temperature was applied in forming $C_2S$ mineral the temperature of about 100$0^{\circ}C$. The major clinker minerals such as $C_3S$, $C_2S$, $C_3A$ and $C_4AF$ were formed in most of limestone when the firing temperature was up to 130$0^{\circ}C$.
한기성,Han Ki Sung 大韓窯業學會 : 韓國洋灰工業協會 1973 시멘트 심포지움 Vol.1 No.-
Cement industry in Korea, has made a remarkable progress in recent years and now annual production capacity is about 9,000,000 tons. However, this large amount of cement is only one kind of general portland cement type I, and it is urgent problem for ceme
Tricalciumaluminate의 초기 수화반응에 미치는 $K_2O$의 영향
한기성,최만,서일영,Han, Ki-Sung,Choi, Man,Seo, Il-Young 한국세라믹학회 1982 한국세라믹학회지 Vol.19 No.2
Two kinds of clinker liquid melts, one containing 2.0% of $K_2O$ and the other without $K_2O$, were prepared with the similar composition as those developed during the firing of portland cement clinker. One portion of melt was quenched and found to consist of glass together with traces of proto-$C_3A$, and the other portion was allowed to cool spontaneously to crystallize $C_3A$ and calciumferrite well. The product obtained by crystallization of the melt without $K_2O$showed cubic $C_3A$, while orthorhombic $C_3A$ was formed from the crystallized product containing $K_2O$. Studies on the hydration behavior of the samples made from the melts with 30% of gypsum were carried out for 24 hours by observation at regular intervals ettringite, monosulphate hydrates and gypsum which were formed or consumed during hydration. The samples without $K_2O$ in the melts were hydrated wth addition of proper amount of $K_2SO_4$ in the water for hydration. Hydration behavior of glassified $C_3A$ showed that it has low reactivity relative to crystallized $C_3A$, and also hydration reactivity of orthorhombic $C_3A$ was much lower than that of cubic $C_3A$ in 60 minutes. Potassium sulphate in the solution reduced the hydration reactivity of $C_3A$ . Evolution peaks of hydration heat examined by twin-type conduction micro-calorimeter showed that glassified $C_3A$ without $K_2O$ had secondary peak after 9 hours and $C_3A$ containing $K_2O$ after 12 hours. When crystallized $C_3A$ was hydrated, initial peaks of hydration heat were considerably high and there was no secondary peak for cubic $C_3A$ but the secondary peak of orthorhombic $C_3A$ appeared after 4 hours.
견관절 충돌증후군 환자에 대한 삼각근 억제 테이핑이 견부 통증과 기능수행 수준, 근력, 관절가동범위에 미치는 즉각적 영향
한기성 ( Gee Sung Han ),김선엽 ( Suhn Yeop Kim ) 대한물리의학회 2011 대한물리의학회지 Vol.6 No.3
Purpose:The purpose of this study was to determine the initial effects of deltoid inhibition taping to Pain, Function, Strength, ROM in shoulder impingement syndrome (SIS). Methods:This study is 28 patients(male 16, female 12) with shoulder impingement syndrome(SIS).The experimental group received deltoid inhibition taping and the control group had sham taping. Outcome variables measured degree of pain, disability, strength, and range of motion at pre-post intervention. The changes between pre-post interventions are analyzed by a repeated measure ANOVA test. Results:Pain and disability index significantly decreased (p<.05), and the rate of change in pain and disability level of the experimental group increased significantly more than control group (p<.05). Strength and range of motion significantly increased (p<.05), but the rate of change of the two groups showed no significant difference (p>.05). Conclusion:These results suggest that deltoid inhibition taping was initial effective in decreasing pain and disability in SIS patients.
보육시설 화재시 공간유형에 따른 피난행태 및 물리적 위험요인 분석 연구
한기성(Han, Gi-Sung),이경훈(Lee, Kyung-Hoon) 대한건축학회 2017 대한건축학회 학술발표대회 논문집 Vol.37 No.1
The purpose of this study is to propose architecturally safe plan type and physical environment depending on human evacuation behavior and investigate specific hazardous factor of physical environment resulted from diverse plan type of child day care center in a fire evacuation. To achieve these purpose, the child day care centers have been chosen in national capital region. and the evacuation experiments through the computer simulation called Simulex were carried. The results of this study are as follows; ⑴ It is necessary to design the egress routes being scattered. And linear type which can be egress various routes is better than centric type that egress routes is centralized like hall. ⑵ A bottleneck situation usually happens connection between door of classroom, corridors, and staircase. and crowding rate is depending on the form and width of exit.
한기성(Han, Gi-Sung),강경연(Kang, Kyung-Yeon),이경훈(Lee, Kyung-Hoon) 대한건축학회 2017 대한건축학회 학술발표대회 논문집 Vol.37 No.2
In this study, 161 Police substations in Korea were categorized into six types based on the facility size and the characteristics of each type were analyzed. In addition, 16 facilities which were representative cases of each type were selected and investigated whether the facilities meet the written standards and how police officers are using their working spaces and rooms through field observation and interview. The results showed that there were differences in the installation ratio of required spaces among facility types. Therefore, for improvement of the facility standard, the lists of space need to be modified and the size of each space need to be complemented.
몰입형 가상현실을 통한 건물 화재시 피난 유도등 속성에 따른 피난 경로선택 실험 연구 - 국가(캐나다, 한국) 간 비교 분석 -
한기성(Han, Gisung),Andrew J. Park,윤정남(Yun, Jung-Nam),이경훈(Lee, Kyung-Hoon) 대한건축학회 2023 대한건축학회 학술발표대회 논문집 Vol.43 No.1
During fire situations, occupants have to decide where they want to move to exit and how they want to reach their destination. The aim of this cross-cultural study is to analyze the effect of perception of evacuation signs and decision-making time during route choice on the types and installation positions of evacuation sign systems in virtual fire evacuation experiments. The experiments were conducted in Canada and Korea. Among all participants, the proportion of participants who choose routes that installed EXIT(text) sign was higher than those with ISO(pictogram) sign. And there was a significant difference in the result of route choice between participants of countries according to the position of the sign. The experiment results can be used as basic data to evacuate through plans of appropriate evacuation signs efficiently.