영남지방 단층대에서 지질에 따른 원소의 거동특성과 단층활동

송수정 ( Su Jeong Song ),추창오 ( Chang Oh Choo ),장천중 ( Chun Joong Chang ),장윤득 ( Yun Deuk Jang ) 대한지질공학회 2014 대한지질공학회 학술발표회논문집 Vol.2014 No.1

단층 비지대 내 미세구조와 주요광물의 파쇄특성

송수정(Su-Jeong Song),추창오(Chang-Oh Choo),장윤득(Yun-Deuk Jang) 대한지질학회 2013 대한지질학회 학술대회 Vol.2013 No.10

구두발표 : 경주시 양북면 단층암의 미세 구조 및 파쇄 경향성

송수정 ( Su Jeong Song ),추창오 ( Chang Oh Choo ),장윤득 ( Yun Deuk Jang ) 대한지질공학회 2013 대한지질공학회 학술발표회논문집 Vol.2013 No.2

경주시 양북면 단층암의 원소거동과 광물조성 특성

송수정(Su Jeong Song),추창오(Chang Oh Choo),장천중(Chun-Joong Chang),장윤득(Yun Deuk Jang) 한국암석학회 2013 암석학회지 Vol.22 No.2

단층활동 과정에서 암석 내 화학조성과 광물 조성 간의 연관성을 이해하기 위한 목적으로 경주시 양북면 용당리에 발달하는 단층암에 대하여 XRF, ICP, XRD, EPMA/BSE 분석을 시행하여 단층암 내의 광물조성 및 원소의 거동 경향성을 파악하였다. 단층암의 대표적인 주성분으로서 SiO₂는 61.6~71.0%의 범위로 가장 높은 함량을 나타내며, Al₂O₃는 10.8~15.8%이다. Na₂O는 0.22~4.63%, K₂O는 2.02~4.89%이고, Fe₂O₃는 3.80~12.5% 범위로 나타나 단층암 내에서 특히 이들 원소의 편차가 크다. 각력대에서 비지대로 갈수록 감소하는 경향을 나타내는 원소에는 Na₂O, Al₂O₃, K₂O, SiO₂, CaO, Ba, Sr 등이 있고, 증가하는 경향을 나타내는 원소에는 Fe₂O₃, MgO, MnO, Zr, Hf, Rb 등이 있다. 이러한 화학적 거동은 각력대가 대부분 석영, 장석류와 같은 주요 조암광물로 구성되는 반면, 비지대는 일라이트와 같은 점토광물이 다량 함유되는 것과 밀접한 관련성이 있다. 본 단층대에서는 기존 광물의 변질과 동시에 점토광물이 생성되는 데 있어 단층 활동에 수반된 유체활동이 큰 영향을 끼쳤다. 단층활동 초기에는 파쇄대가 열수의 통로로 작용하는 과정에서, 주원소 및 미량원소, 희토류원소는 기존 광물로부터 용탈되어 높은 원소 유동성을 나타내었으나, 파쇄대 중심부가 비지대로 점차 변화하는 과정에서는 이차적으로 형성된 점토광물로 인해 단층대의 투수성이 감소하고, 점토광물이 풍부해진 비지대 내에 농집되므로 낮은 원소 유동성을 가진 것으로 해석된다. This study is focused on element behaviors and mineral compositions of the fault rock developed in Yongdang-ri, Yangbuk-myeon, Gyeongju City, Korea, using XRF, ICP, XRD, and EPMA/BSE in order to better understand the chemical variations in fault rocks during the fault activity, with emphasis on dependence of chemical mobility on mineralogy across the fault zone. As one of the main components of the fault rocks, SiO₂ shows the highest content which ranges from 61.6 to 71.0%, and Al₂O₃ is also high as having the 10.8~15.8% range. Alkali elements such as Na₂O and K₂O are in the range of 0.22~4.63% and 2.02~4.89%, respectively, and Fe₂O₃ is 3.80~12.5%, indicating that there are significant variations within the fault rock. Based on the chemical characteristics in the fault rocks, it is evident that the fault gouge zone is depleted in Na₂O, Al₂O₃, K₂O, SiO₂, CaO, Ba and Sr, whereas enriched in Fe₂O₃, MgO, MnO, Zr, Hf and Rb relative to the fault breccia zone. Such chemical behaviors are closely related to the difference in the mineral compositions between breccia and gouge zones because the breccia zone consists of the rock-forming minerals including quartz and feldspar, whereas the gouge zone consists of abundant clay minerals such as illite and chlorite. The alteration of the primary minerals leading to the formation of the clay minerals in the fault zone was affected by the hydrothermal fluids involved in fault activity. Taking into account the fact that major, trace and rare earth elements were leached out from the precursor minerals, it is assumed that the element mobility was high during the first stage of the fault activity because the fracture zone is interpreted to have acted as a path of hydrothermal fluids. Moving toward the later stage of fault activity, the center of the fracture zone was transformed into the gouge zone during which the permeability in the fault zone gradually decreased with the formation of clay minerals. Consequently, elements were effectively constrained in the gouge zone mostly filled with authigenic minerals including clay minerals, characterized by the low element mobility.

흑맥문동의 ABTS, DPPH 라디칼 소거 활성에 미치는 N 및 P 시비형태의 효과

송수정(Su Jeong Song),백준필(Jun Pill Beak),윤용규(Yong Gyu Yun),윤정해(Jung Hae Yun),장매희(Maehee Chiang) 한국원예학회 2013 한국원예학회 학술발표요지 Vol.2013 No.10

경주시 양북면 단층암의 광물 조성과 입도 분포 특징

송수정,추창오,장천중,장태우,장윤득,Song, Su Jeong,Choo, Chang Oh,Chang, Chun-Joong,Chang, Tae Woo,Jang, Yun Deuk 대한자원환경지질학회 2012 자원환경지질 Vol.45 No.5

경주시 양북면 용당리에 발달한 단층암을 대상으로 X선 회절 분석(XRD), 광학현미경 분석, 레이저 입도 분석, 프랙탈 차원 분석을 적용하여 단층암의 광물 조성과 미구조, 잔류입자의 분포 특성을 연구하였다. 단층핵은 약 1.5 m 두께로 발달하며 이 중 각력대는 약 1.2m, 단층핵의 가장 중심부인 비지대는 평균 20cm의 얇은 두께로 노출되어 있다. 각력대에서는 석영, 장석류 등의 조암광물이 주 구성 광물로서 산출되고 비지대에서는 녹니석, 일라이트 등의 점토광물이 주 구성 광물로서 산출된다. 단층암에서 빈번하게 산출되는 맥상광물, 황철석, 변질 광물 등은 단층활동과 더불어 열수변질 작용이 수반되었음을 시사하고 있다. 현미경에 의한 구획 점셈(box counting), Image J에 의한 영상분석 및 레이저 입도 분석에 기초한 프랙탈 차원값은 단층암의 입자 파쇄 특성을 잘 보여준다. 세 가지 방법으로 구한 프랙탈 차원값(D)은 각력대에서 비지대로 갈수록 그 값이 증가하고 비지대 내에서는 공통적으로 높은 차원값을 갖는다. 비지대 내에서는 D값의 변화가 상대적으로 적으며, 일정한 경향성이 나타나지 않는다. 이는 각력대에서는 입자들의 대량파쇄가 우세하게 발생하고, 단층운동이 계속되어 생성된 비지대에서는 입자의 마모가 보다 우세하게 발생하였음을 시사한다. 연구지역 단층암의 광물 조성과 입자 분포 특성은 다중 단층 운동과 열수변질 작용이 본 연구지역 단층대의 진화에 큰 영향을 끼쳤음을 지시한다. 단층암에서의 프랙탈 차원값이 측정 기법에 따라 차이가 발생하므로 프랙탈 차원값의 상대적인 비교는 보다 신중히 이용되어야 될 것으로 생각된다. This paper is focused on mineral compositions, microstructures and distributional characters of remained grains in the fault rocks collected from a fault developed in Yongdang-ri, Yangbuk-myeon, Gyeongju City, Korea, using X-ray diffraction (XRD), optical microscope, laser grain size analysis and fractal dimension analysis methods. The exposed fault core zone is about 1.5 meter thick. On the average, the breccia zone is 1.2 meter and the gouge zone is 20cm thick, respectively. XRD results show that the breccia zone consists predominantly of rock-forming minerals including quartz and feldspar, but the gouge zone consists of abundant clay minerals such as chlorite, illite and kaolinite. Mineral vein, pyrite and altered minerals commonly observed in the fault rock support evidence of fault activity associated with hydrothermal alteration. Fractal dimensions based on box counting, image analysis and laser particle analysis suggest that mineral grains in the fault rock underwent fracturing process as well as abrasion that gave rise to diminution of grains during the fault activity. Fractal dimensions(D-values) calculated by three methods gradually increase from the breccia zone to the gouge zone which has commonly high D-values. There are no noticeable changes in D-values in the gouge zone with trend being constant. It means that the bulk-crushing process of mineral grains in the breccia zone was predominant, whereas abrasion of mineral grains in the gouge zone took place by continuous fault activity. It means that the bulk-crushing process of mineral grains in the breccia zone was predominant, whereas abrasion of mineral grains in the gouge zone took place by continuous fault activity. Mineral compositions in the fault zone and peculiar trends in grain distribution indicate that multiple fault activity had a considerable influence on the evolution of fault zones, together with hydrothermal alteration. Meanwhile, fractal dimension values(D) in the fault rock should be used with caution because there is possibility that different values are unexpectedly obtained depending on the measurement methods available even in the same sample.

성인 남성근로자의 체중감소행동 변화단계에 따른 식생활 지침 실천 양상 및 건강신념 비교

송수정,안홍석,길진모,Song, Su Jeong,Ahn, HongSeok,Khil, Jinmo 한국영양학회 2013 Journal of Nutrition and Health Vol.46 No.3

This study compared levels of health and dietary behavior practices and health beliefs according to the stage of weight loss behavior change of Korean male workers. A self-administered survey questionnaire was collected from 411 male adult workers residing in Seoul, Kyeonggi, Chungcheong region. Practices of health related behavior, including smoking, drinking, exercise, work related physical activity, and dietary behavior according to dietary guidelines were evaluated. In addition, the levels of perceived benefit, perceived barrier, perceived susceptibility, perceived seriousness, and perceived cue to action from the health belief model were measured according to the stages of weight loss behavior change. Significant differences in BMI, level of daily exercise, and practices of dietary behavior according to dietary guidelines were observed among stages of weight loss behavior change. Subjects who were in action/maintenance stage showed a more desirable level of health behavior and health belief model variables, except perceived barrier. Based on the findings of this study, it is suggested that subjects with different stages of behavior change need an appropriate specific nutrition education method and material for improvement of nutrition education efficacy.

20대 성인을 대상으로 불안정한 지지면에서의 런지 운동이 신체 균형에 미치는 영향

송수정,김세미,김지혜,박지은,박형상,이경호,이다영,이종배,이진경,전혜민,지미선,차윤희,하혜림,홍지웅,방현수,Song, Su-Jeong,Kim, Se-Mi,Kim, Ji-Hye,Park, Ji-Eun,Park, Hyung-Sang,Lee, Kyung-Ho,Lee, Da-Young,Lee, Jong-Bae,Lee, Jin-Kyung,Jeon, Hye-Min,J 대한물리치료과학회 2018 대한물리치료과학회지 Vol.25 No.3

Purpose : The purpose of this study is to examine the Effect of Lunge Exercise on the Balance of Stable and Unstable Supporting surface. Method : The experimenter was a healthy twenties male and female. The period was two weeks, divided into a stable group and a unstable group. Setting the holding time 4 sec 3 sets of 10 times using the Stable and Unstable Supporting Surfaces. The break time was set at one minute for each set. Balance cushions were used for unstable supporting surfaces. Results : After Lunge Exercise, Both groups had an impact on improving their ability to balance. Conclusion : There has not been much change in the ability to balance the stable and Unstable Supporting Surfaces. However, considering surface conditions, the pre and post exercise comparisons had an effect on improving the ability to balance.

아르곤레이저 치료후 재발한 중심와아래 맥락막신생혈관에 대한 광역학치료

이민정,송수정,정흠,유형곤,Min-Joung Lee,M,D,Su-Jeong Song,M,D,Hum Chung,M,D,Hyeong-Gon Yu,M,D 대한안과학회 2005 대한안과학회지 Vol.46 No.12

Purpose: To evaluate the effects of photodynamic therapy for subfoveal recurrences of juxtafoveal or extrafoveal choroidal neovascularization (CNV), previously treated with argon-laser photocoagulation. Methods: Seven eyes, previously treated with argon-laser photocoagulation for juxtafoveal or extrafoveal choroidal neovascularization, received photodynamic therapy for subfoveal recurrence. Changes in visual acuity and fluorescein angiographic findings were analyzed. Results: The average time of appearance of recurrent CNV after laser photocoagulation was 43.14±29.62 months (range, 2-77 months). After photodynamic therapy, fluorescein leakage and neovascular lesion size decreased in all patients on fluorescein angiography. Visual acuity was stabilized or improved in 5 of 7 eyes. Conclusions: Photodynamic therapy was effective in patients with subfoveal recurrences of juxtafoveal or extrafoveal choroidal neovascularization previously treated with argon-laser photocoagulation.

망막병증을 동반하지 않은 초기 제2형 당뇨병 환자에서 망막혈관 직경의 변화

박정우(Jeong Woo Park),배정훈(Jeong Hun Bae),송수정(Su Jeong Song),김준모(Joon Mo Kim) 대한안과학회 2022 대한안과학회지 Vol.63 No.1

목적: 망막병증이 동반되지 않은 초기 제2형 당뇨병 환자에서 망막혈관의 직경을 측정하고, 정상안과 비교하여 그 변화를 알아보고자 하였다. 대상과 방법: 제2형 당뇨병으로 진단받은 지 10년 이내의 환자 85명과 나이와 성별이 유사한 건강한 대조군 48명의 의무기록을 후향적으로 분석하였다. 모든 환자들은 산동 후 안저검사를 통해 당뇨망막병증이 동반되지 않음을 확인하였고, 안저카메라를 이용하여 안저촬영을 시행하였다. 망막혈관의 직경을 반자동으로 측정해주는 프로그램을 이용하여 중심망막동맥대응치, 중심망막정맥대응치, 동정맥비 값을 구하였다. 대조군도 환자군과 같은 방법으로 검사를 시행하고, 두 군을 비교 분석하였다. 결과: 환자군과 대조군의 중심망막동맥대응치는 각각 149.92 ± 21.29 μm, 144.85 ± 17.14 μm로 두 군 간에 유의한 차이가 없었고(p=0.137), 중심망막정맥대응치도 환자군과 대조군에서 각각 195.85 ± 22.94 μm, 196.69 ± 18.43 μm로 차이가 없었다(p=0.829). 그러나, 동정맥비는 환자군에서 0.768 ± 0.088이었고, 대조군은 0.737 ± 0.061로 두 군 사이에 유의한 차이가 있었다(p=0.031). 환자군에서 동정맥비는 당화혈색소와 유의한 상관관계가 있었으나(r=0.325, p=0.006), 체질량지수와는 관련이 없었다(p=0.478). 결론: 시신경유두 주위 동정맥비의 상승은 제2형 당뇨병 환자에서 관찰되는 망막혈관의 초기 변화로 생각되며, 이는 혈당의 증가와 밀접한 관련이 있다. Purpose: To evaluate the retinal vascular caliber in early type 2 diabetic patients without retinopathy. Methods: This retrospective study reviewed the medical records of 85 patients who were diagnosed with type 2 diabetes (age, 10-48 years) and sex-matched healthy controls. Dilated fundus examinations were performed to confirm the absence of diabetic retinopathy. Fundus photographs were acquired and analyzed using software that semi-automatically measured retinal vascular caliber. Central retinal arteriolar equivalent (CRAE), central retinal venular equivalent (CRVE), and arteriovenous ratio (AVR) were determined using the revised Parr-Hubbard formula. Healthy controls were examined using the same approach. Results: There were no significant differences between patients and controls in terms of CRAE (149.92 ± 21.29 μm and 144.85 ± 17.14 μm, respectively; p = 0.137) or CRVE (195.85 ± 22.94 μm and 196.69 ± 18.43 μm, respectively; p = 0.829). However, AVR was significantly higher in the patient group (0.768 ± 0.088 vs. 0.737 ± 0.061; p = 0.031). In the patient group, AVR was significantly correlated with hemoglobin A1c (r = 0.325, p = 0.006), but not with body mass index (p = 0.478). Conclusions: An increase in peripapillary AVR may be an early feature of retinal vessels observed in patients with type 2 diabetes, which is closely related to elevated blood sugar.