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삼척지역(三陟地域)에 분포(分布)하는 우백질화강암류(優白質花崗巖類)의 Rb/Sr 연령(年齡)에 관(關)한 연구(硏究)
김용준,주승환,조등룡,Kim, Yong Jun,Joo, Seung Hwan,Jo, Deung Ryong 대한자원환경지질학회 1984 자원환경지질 Vol.17 No.4
The purpose of this study is to clarify geological age of leucogranitic rocks in the Samcheog area. Petrographical and geochronological features of leucogranitic rock are as follows; (1) These rocks in the area can be classified into two rock types: Moogho leucogranite gneiss and Yimwon leucogranite. (2) These rocks intruded into Precambrian metasediments and are overlain by Paleozoic sedimentary rocks. (3) These rocks are distinctly showing slight foliation and containing garnet and sillimanite which produced by assimilation and contamination. (4) Rb/Sr whole rock age of these rocks indicates an isochron of $2088{\pm}8.5$ m.y. with the initial $^{87}Sr/^{86}Sr$ ratio of $0.7108{\pm}0.0007$.
三陟地域에 分布하는 優白質花崗巖類의 Rb/Sr 年齡에 關한 硏究
Yong Jun Kim(金勇俊),Seung Hwan Joo(朱昇煥),Deung Ryong Jo(趙騰龍) 대한자원환경지질학회 1984 자원환경지질 Vol.17 No.4
The purpose of this study is to clarify geological age of leucogranitic rocks in the Samcheog area. Petrographical and geochronological features of leucogranitic rock are as follows; (1) These rocks in the area can be classified into two rock types: Moogho leucogranite gneiss and Yimwon leucogranite. (2) These rocks intruded into Precambrian metasediments and are overlain by Paleozoic sedimentary rocks. (3) These rocks are distinctly showing slight foliation and containing garnet and sillimanite which produced by assimilation and contamination. (4) Rb/Sr whole rock age of these rocks indicates an isochron of 2088±8.5 m.y. with the initial ⁸⁷Sr/⁸⁶Sr ratio of 0.7108±0.0007.
주광태,신진성,김동언,송정호,주승환,장홍근 한국비파괴검사학회 2002 한국비파괴검사학회지 Vol.22 No.5
국내 감마선투과검사용 조사장치는 1,000여대로 2,500여명의 종사자가 대부분 수동으로 원격 조작하는 실정으로 작업의 효율화와 방사선피폭 저감화를 위하여 자동 원격조작기의 사용이 요구된다. 이에 연구팀은 실무에 적합한 토크와 안전계수로부터 54kgf·㎝의 출력을 지닌 24V, 200W의 BLDC모터를 이용하여 0.4∼1.2 m/s 범위의 선원 이동속도를 조절할 수 있는 구동장치와 RF 센서로 구동 속도 조절, 광전센서에 의한 선원 위치 및 timer로 노출시간을 제어할 수 있는 무선 원격조작기를 개발하였다. 이와 같이 개발한 자동원격조작기는 AC와 DC 겸용, 그리고 기존의 수동 원격조작기에 탈착이 가능하여 자동과 수동을 겸용할 수 있는 경제적 이점 등으로 활용도가 클 것으로 기대된다. Recently, gamma radiographic equipments have been used about 1,000 sets manually and operated by about 2,500 persons in Korea. In order for a radiography to work effectively with avoiding any hazard of the high level radiation from the source, many field workers have expected developing a wireless automatic remote exposure controller. The KITCO research team has developed an automatic remote exposure controller that can regulate the speed of 0.4∼1.2 m/s by BLDC motor of 24V 200W which has output of 54 kgf·㎝, suitable torque and safety factor for the work. And the developed automatic remote exposure controller can control rpm of motor, pigtail position by photo-sensor and exposure time by timer to RF sensor. Thus, the developed equipment is expected that the unit can be used in many practical applications with benefits in economical advantage to combine the use of both automatic and manual type because attachment is possible existent manual remote exposure controller, AC and DC combined use.