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한국, 일본, 러시아 용암동굴 형성층의 형광X선 분석과 편광현미경적 연구
Sawa, Isao,Furuyama, Katsuhiko,Ohashi, Tsuyoshi,Kim, Chang-Sik,Kashima, Naruhiko 한국동굴학회 2006 동굴 Vol.74 No.-
(1) Kaeusetgul Cave in Kimnyong-Ri, Jeju-Do, Korea. Kaeuset-gul Cave (KC) is situated in NNE area of the Manjang-gul cave (125m a.s.l.). Kaeuset-gul Cave lies at $126^{\circ}45'22"$ E in longitude and $33^{\circ}33'09"$ N in latitude. The coast belong Kimnyeong-Ri, Kujwa-eup, Jeju-Do. Altitude of the cave-entrance is 10m and length of the cave is 90m. Lava hand-specimens of KC are studied by X-ray fluorescence analysis (XRF). Average major chemical components of specimens from KC is as follows (wt.%); $SiO_2=47.03$, $TiO_2=3.16$, $Al_2O_3=18.41$, FeO*=13.53, MnO=0.14, MgO=5.05, CaO=8.66, $Na_2O=2.81$, $K_2O=0.67$, $P_2O_5=0.55$ in KC. Polarizing microscopic studyindicates that these specimens are described of alkali-basalt. (2) Tachibori Fuketsu (Cave) in Shizuoka Prefecture, Fuji Volcano, Japan Tachibori Fuketsu lies attoward the south in skirt of the Fuji volcano, $138^{\circ}42'04"$ east longitude and $35^{\circ}18'00"$ north latitude. The location of cave entrance is 2745, Awakura, Fujinomiya-shi, Shizuoka Prefecture. The above sea level and length of Tachibori Fuketsu are 1,170m and 82m. Average major chemical components of specimens from cave areas follows (Total 100 wt.%) ; ($SiO_2$=50.52, $TiO_2$=1.69, $Al_2O_3$=15.47, FeO*=13.13, MnO=0.20, MgO=5.97, CaO=9.17, $Na_2O$=2.52, $K_2O$=0.94 and $P_2O_5=0.40).$ Polarizing microscopic study indicates that these specimens may belong to tholeiite-basalt series. According to polarizing microscopic study, Au (Augite), P1 (Plagioclase), and O1 (Olivine) are contained as phenocryst minerals. (3) Gorely Cave in Kamchatka Peninsula, Russia Gorely caldera is located at the southeastern part of Kamchatka Peninsula, about 75km southwest of Petropavlovsk-Kamchatskiy.. Gorely lava caves are situated in NHE area of Mt. Gorely volcano (1829m a.s.1.). One of lava cave (Go-9612=K-1) lies at $158^{\circ}00'22"$ east longitude and $52^{\circ}36'18"$ north latitude. The elevation of cave entrance is about 990m a.s.1. and the main cave extends in the NNW direction for about 50m by 15m wide and 5m in depth. The cave of K-3is near the K-1 cave. "@Lava hand-specimens K-1 and K-3 caves are studied by X-ray fluorescence analysis and polarizing microscopic observation. Average major chemical components of specimens from these caves are as follows (wt.%) ;($SiO_2$=55.12, $TiO_2$=1.25, $Al_2O_3$=16.07, T-FeO* =9.41, MnO=0.16, MgO=5.01, CaO=7.21, $Na_2O$=3.39, $K_2O$=1.92, $P_2O_5$=0.45) and these values indicate that the Gorely basaltic andesite belong to high alumina basalt. Polarizing microscopic study indicates that these specimens are described of Augite andesite.
한국, 일본, 러시아 용암동굴 형성층의 형광X선 분석과 편광현미경적 연구
( Isao Sawa ),( Katsuhiko Furuyama ),( Tsuyoshi Ohashi ),( Chang Sik Kim ),( Naruhiko Kashima ) 한국동굴학회 2006 동굴 Vol.74 No.-
(1) Kaeusetgul Cave in Kimnyong-Ri, Jeju-Do, Korea. Kaeuset-gul Cave (KC) is situated in NNE area of the Manjang-gul cave (125m a.s.l.). Kaeuset-gul Cave lies at E in longitude and N in latitude. The coast belong Kimnyeong-Ri, Kujwa-eup, Jeju-Do. Altitude of the cave-entrance is 10m and length of the cave is 90m. Lava hand-specimens of KC are studied by X-ray fluorescence analysis (XRF). Average major chemical components of specimens from KC is as follows (wt.%); SiO2+47.03, TiO2=3.16,AlO3=18.41, FeO8=13.53, Mn0=0.14, MgO=5.05, CaO=8.66, Na2O=2.81,K2O=0.67, P2O5=0.55 in KC. Polarizing microscopic studyindicates that these specimens are described of alkali-basalt. (2) Tachibori Fuketsu (Cave) in Shizuoka Prefecture, Fuji Volcano, Japan Tachibori Fuketsu lies attoward the south in skirt of the Fuji volcano, 138˚42`` 04" east longitude and 35˚18``00" north latitude. The location of cave entrance is 2745, Awakura, Fujinomiya-shi, Shizuoka Prefecture. The above sea level and length of Tachibori Fuketsu are 1,170m and 82m. Average major chemical components of specimens from cave areas follows (Total 100 wt.%) ; (SiO2 =50.52, TiO2 =1.69, Al2O3 =15.47, FeO*=13.13, MnO=0.20, MgO=5.97, CaO=9.17, Na2O=2.52, K2O =0.94 and P2O5=0.40).Polarizing microscopic study indicates that these specimens may belong to tholeiite-basalt series. According to polarizing microscopic study, Au (Augite), P1 (Plagioclase), and O1 (Olivine) are contained as phenocryst minerals. (3) Gorely Cave in Kamchatka Peninsula, Russia Gorely caldera is located at the southeastern part of Kamchatka Peninsula, about 75km southwest of Petropavlovsk-Kamchatskiy. Gorely lava caves are situated in NHE area of Mt. Gorely volcano (1829m a.s.1.). One of lava cave (Go-9612=K-1) lies at 158˚00``22" east longitude and 52˚36`` 18" north latitude. The elevation of cave entrance is about 990m a.s.1. and the main cave extends in the NNW direction for about 50m by 15m wide and 5m in depth. The cave of K-3is near the K-1 cave. "@Lava hand-specimens K-1 and K-3 caves are studie d by X-ray fluorescence analysis and polarizing microscopic observation. Average major chemical components of specimens from these caves are as follows (wt.%) ;( SiO2=55.12, TiO2 =1.25, Al2O3 =16.07, T-FeO* =9.41, MnO=0.16, MgO=5.01, CaO=7.21, Na2O=3.39, K2O=1.92, P2O5=0.45) and these values indicate that the Gorely basaltic andesite belong to high alumina basalt. Polarizing microscopic study indicates that these specimens are described of Augite andesite.
Power-Electronics Contributing to the Green and Clean World
Toshihiro Sawa,Tsuneo Kume,Hidenori Hara,Mahesh Swamy 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
Invention of the electric motor has since, spurred its wide spread application to convert electrical energy in to mechanical work. As its usefulness grew, engineers were challenged to develop control techniques to match the speed and torque of the motor to that of the driven load to achieve optimal performance. The advent of Power Electronics was crucial in achieving variable speed operation of motors. Hence, it can be said that Power Electronics has contributed to the prosperity of today’s worldwide economy and allowed people to lead a joyous and peaceful life. However, at the same time, the amount of electrical energy consumed by electric motors accounts for the We have to be aware of this fact and its consequential influence on global warming. This paper discusses variable speed motors drives. It reviews Yaskawa’s contribution to industrial inverter drives and introduces a technology road map to realize a “Greener World” with all its future prospects.