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Decabromodiphenyl Oxide와 산화안티몬을 이용한 폴리에스테르 직물의 방염가공
송경근,이의소,고석원,Song, Gyeong-Geun,Lee, Ui-So,Go, Seok-Won 한국섬유공학회 1990 한국섬유공학회지 Vol.27 No.7
Polyester fabrics were treated with decabromodiphenyl oxide and antimony trioxide by use of binder. The synergistic interactions of bromine and antimony were studied. The LOI values increased with the content of DBDPO or antimony trioxide in fabrics, but flame retardancy was not satisfactory when they were used independently. On the contrary, when a mixture of DBDPO and antimony trioxide was used, the synergistic effects were remarkable and the maximum LOI value was obtained at 715 Br/sb ratio in treated fabrics. When the Br contents in the fabrics of 713 Br/sb ratio were more than 8.5% , flame retardancy was also sustained after 5 laundering cycles. Flame retardancy of these fabrics exhibited the gas-phase mechanism.
PAN 그라프트 공중함 나트륨 황산 셀룰로오스계 고흡수성 수지의 합성과 성질(III)-고흡수성 수지의 여러가지 성질-
송경근,윤기종,고석원,Song, Gyeong-Geun,Yun, Gi-Jong,Go, Seok-Won 한국섬유공학회 1994 한국섬유공학회지 Vol.31 No.11
Various properties of superabsorbents(HCSPAH) from sodium cellulose sulfate were analyzed. Saline absorbency of HCSPAN in multivalent salt solutions was lower than that in monovalent salt solution of same ionic strength. This appears to be due to the formation of completes between the metal ion and the polyion. Phase transitions of HCSPAN gels were caused by changes in the composition of the polar organic solvent/water mixtures. As the dieleciric constants of solvents were increased, gel collapse occurred at higher solvent concentrations. From DSC measurement, the absorbed water was found to exist as both free and bound water. When water content was less than 0.71g-water/g-dry HCSPAH. only bound water existed.
PAN 그라프트 공중합 나트륨 황산 셀룰로오스계 고흡수성 수지의 합성과 성질(II)-고흡수성 수지의 흡수속도-
송경근,윤기종,고석원,Song, Gyeong-Geun,Yun, Gi-Jong,Go, Seok-Won 한국섬유공학회 1994 한국섬유공학회지 Vol.31 No.10
The swelling kinetics of HCSPAN was analyzed by the demand wettability(DW) method. It was influenced by the complex action of crosslinking density, ionic unit content and soluble polynler content related to alkaline hydrolysis conditions such as alkaline hydrolysis temperature. NaOH concentration and alkaline hydrolysis time. And it was also infiueneced by gel blocking which was related with the particle size. The moisture regain of HCSPAN was not high at even high relative humidity.
이집트 민족주의의 형성과 발전 및 그 안에서 외세와 이슬람의 역할에 대한 연구 : 프랑스의 이집트 침입부터 이집트의 독립까지
송경근 ( Kyung Keun Song ) 한국외국어대학교 중동연구소 2010 중동연구 Vol.29 No.2
Napoleon and French Army invaded Egypt in 1798. Their occupation of Egypt lasted three years, and they were forced to be evacuated in 1801 by the Anglo-Othman forces. However, the departure of French Army not only simply end short period of intrusion in Egyptian history, during which an isolated province was exposed to European culture, but also signalled another type of European influences. On the contrary, French influence was able to establish itself further, and the first ruler of modern Egypt Muhammad Ali continued the work which Napoleon had begun. Ismail, the grandson of Muhammad Ali, continued Muhammad Ali`s work. The seed of nationalism was regarded from reformation of Khedive Ismail and to be reinforced during the intervention of Western European superpowers for the Egyptian financial bankruptcy. Islam played the role of basic power to unify and organize the Egyptian nationalists. The Egyptian nationalism was temporally pressed down the British rule. But it was fired again by Mustafa Kamil. His Nationlism was popular was supported by general public. However it was weakened after his death. On the contrary, Ahmad `Ali Lutfi guided the moderate and compromising nationalism which was rooted by the bourgeoisie. After the 1st world war they became main stram in Egyptian politics. They succeeded to obtain the independence of Egypt and became ruling power after the revolution of 1919. In this period, although Islam was not most important factor to determine all activities, anyone can`t deny it gave basic guideline to keep Egyptian nationalism. Foreign power played to fire the nationalism in Egypt. However Islam offered the basic power to continue the nationalism.
송경근 ( Kyung Keun Song ) 한국이슬람학회 2012 한국이슬람학회논총 Vol.22 No.2
This paper analyzes the internal conflicts in Egypt. In the beginning this paper reviews factors of conflicts. These can be divided into by four types: are political, religious, economic, and social. In chapter three the four variables causing the conflicts are applied to the human needs theory , such as the needs for control, security, justice, rational stimulation, and identity. The increase and decrease of these conflicts are dependent upon the realization of the needs of control, security, justice, rational stimulation, and identity. The core of the increase and decrease of conflicts were dependent upon the relation between the military authorities and Islamists, from Naser`s revolution to the present. Other causes of conflicts were affected by the position and situation of the military authorities and Islamists. In addition, the needs which it tries to solve, which are the causes of the conflicts, are the solution for the conflicts.
모듈러 형태의 재구성 가능형 마이크로 공작기계의 설계와 제작
송경근(K. G. Song),노민석(M. S. Rho),조인봉(I. B. Jo),이상기(S. K. Lee),정진영(J. Y. Jung),장성현(S. H. Jang),최영휴(Y. H. Choi) 한국생산제조학회 2007 한국공작기계학회 춘계학술대회논문집 Vol.2007 No.-
In this study, we designed a modular reconfigurable micro machine tool (MRmMT), which is reconfigurable from a milling machine to a lathe. Our machine tool consists of several module units; bed, column, spindle, slide units, tail stock, and controller. The reconfigurable machine tool developed in this study, demonstrated good machining abilities as a 3-axis milling machine as well as a turning lathe.