• Journal of the Mineralogical Society of Korea
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• v.23 no.1
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• pp.25-37
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• 2010

Ilmenite ore bodies are deposited within the Precambrian anorthosite body distributed in the Hadonggun and Sancheonggun district, Gyeongsangnamdo. This study tries to identify the occurrence of ilmenite ore body in titanium mine area distributed in Wheolheongri, Okjongmyon, Hadonggun and six mining concession areas (Danseong claim no. 64, 65, 74, 75, 84, 85) in Danseongmyon, Sancheonggun. Wheolheongri ilmenite ore body occurs as vein with about 10~50 m width and 100 m length and shows NNE strike and NW dipping. High grade ore with $TiO_2$ 20 wt% in this area is distributed in intercumulated anorthosite and is sheared and brecciated. Ilmenite occurring in this type is commonly associated with hornbelnde. Ilmenite ore bodies distributed in Danseonggun, Sancheongmyon are deposited in layered anorthosite. They occur as stratiform with variable width from several and several tens meters. Ilmenite which is disseminated in the matrix is sheared and elongated. This type shows generally low grade ($TiO_2$ 1.0~6.0 wt%). The ilmenite ore bodies occur as vein and stratiform, and the former shows higher grade than the latter.

• Economic and Environmental Geology
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• v.52 no.5
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• pp.323-336
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• 2019

The Mesozoic activity on the Korean Peninsula is mainly represented by the Triassic post-collisional, Jurassic orogenic, and Cretaceous post-orogenic igneous activities. The diversity of mineralization by each geological period came from various geothermal systems derived from the geochemical characteristics of magma with different emplacement depth. The Cretaceous metallic mineralization has been carried out over a wide range of time periods from ca. 115 to 45 Ma (main stage; ca. 100 to 60 Ma) related to post-orogenic igneous activity, and spatial distribution patterns of most metal deposits are concentrated along small granitic stocks. The late Cretaceous metal deposits in the Gyeonggi and Yeongnam massifs are generally distributed along the boundary among the Gongju-Eumseong fault system and the Yeongdong-Gwangju fault system and the Gyeongsang Basin, most of them are in the form of a distal epithermal~mesothermal Au-Ag vein or a transitional mesothermal Zn-Pb-Cu vein. On the other hand, diverse metal commodities in the Taebaeg Basin, the Okcheon metamorphic belt and the Gyeongsang Basin are produced from various deposit types such as skarn, carbonate-replacement, vein, porphyry, breccia pipe, and Carlin type. In the late Cretaceous metallic mineralization, various mineral deposits and commodities were induced not only by the pathway of the hydrothermal solution, but also by the diversity of precipitation environment in the proximity difference of the granitic rocks. The diversity of these types of Cretaceous deposits is fundamentally dependent on the geochemical characteristics such as degree of differentiation and oxidation state of related igneous rocks, and ore-forming fluids generally exhibit the evolutionary characteristics of intermediate- to low-sulfur hydrothermal fluids.

• Economic and Environmental Geology
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• v.54 no.6
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• pp.753-765
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• 2021

The Dongwon Au-Ag deposit is located within the Paleozoic Taebaeksan province, Okcheon belt. Mineral paragenesis can be divided into two stages (stage I, ore-bearing quartz veins; stage II, barren carbonate veins) by major tectonic fracturing. Stage I, at which the precipitation of major ore minerals occurred, is further divided into three substages(early, middle and late) with paragenetic time based on minor fractures and discernible mineral assemblages: early, marked by deposition of pyrite with minor magnetite, pyrrhotite and arsenopyrite; middle, characterized by introduction of electrum and base-metal sulfides with minor sulfosalts; late, marked by argentite, Cu-As (and/or Sb) and Ag-Sb sulfosalts with base-metal sulfides. Fluid inclusion data show that stage I ore mineralization was deposited between initial high temperatures (≥430℃) and later lower temperatures (≤230℃) from fluids with salinities between 6.0 to 0.4 wt. percent equiv. NaCl. The relationship of salinity and homogenization temperature suggest that ore mineralization at Dongwon was deposited mainly due to fluid boiling, cooling and dilution via influx of cooler, more dilute meteoric waters. Changes in stage I vein mineralogy reflect decreasing temperature and fugacity of sulfur by evolution of the Dongwon hydrothermal system with increasing paragenetic time. The Dongwon deposit may represents a Korean-type and/or Au-Ag type mesothermal/epithermal gold-silver deposit.

• Korean Journal of Oriental Medicine
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• v.10 no.1
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• pp.49-61
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• 2004

The Standardization of terms in The Pulse studies(脈學) is a need for development of learning. This study, for the correction of existing misused terms in The Pulse studies, we study on modernly and objectively the terms in The Pulse studies. By a focus of ${\ulcorner}$The Pulse Studies of Bin-Ho(瀕湖脈學)${\lrcorner}$, we studies on the new classification of pulse condition. The error of a existing technical books on Pulse studies begin that the classification of pulse condition is not establish a Standardization. For the correction of existing misused terms in The Pulse studies, we study on the pulse condition is expressed objectively a blood vessel that it is a subject of pulse condition. The expression of blood vessel contain a depth of blood vessel, a speed of pulsation, a curve of blood vessel, thickness of blood vessel, a diameter of blood vessel in expand and contract of blood vessel, a interval in expand and contract of blood vessel, a distinctness on a boundary of blood vessel, a speed of blood flow in blood vessel, a volume of blood flow in blood vessel, a condition of blood in blood vessel, a propelling power of blood vessel. These is standard of the new classification of pulse condition.

• Journal of the Institute of Convergence Signal Processing
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• v.9 no.2
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• pp.112-120
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• 2008

This study aims to develop a system for diagnosing pulse and disease conditions based on oriental medical classics to collect objective quantitative information in the traditional pulse examination environment that uses fingers. For this purpose, the study suggested a thimble-type sensor unit as the most appropriate pulse analyzer and proposed a traditional method to measure the pulse pressure wave on the spots of cheok, gwan and chon by installing the pulse analyzer on the forefinger, middle finger and medical finger. Then, it was interpretively found that this pulse analyzer enables us to objectively recognize 28 pulses defined in Oriental medical classics including the yukjo pulse, described as the buchimjisak-heosil pulse, and the hong, yoo, hyeok and san pulses. Finally, the study proposed a method to extract key parameters essential to pulse condition diagnosis from the pulse pressure wave measured by this pulse analyzer.

• Journal of Physiology & Pathology in Korean Medicine
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• v.22 no.6
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• pp.1403-1409
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• 2008

The purpose of this study is to develop the systematic process on the discrimination of Sasang constitution with the pulse diagnosis apparatus. The pulse waves were acquired at the right and the left Guan point with 1420 people who were apparently healthy. In order to minimize the effect of aging on the shape of pulse wave, the age groups of 30s, 40s, and 50s were used. Taeum group was the best to classify, Soyang group was the worst. With the same group size, the sensitivity of Soyang group was increased. Input variables were selected with the consideration of the floating-sink ratio, tests of equality of group means, multiple comparison, multicollinearity, and structure matrix. To increase the sensitivity of Soyang, the variables which could tell the difference between Soyang and Soeum were selected.

• Proceedings of the KIEE Conference
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• 2008.10b
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• pp.205-206
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• 2008

한의학에서 손목의 맥파를 손으로 짚어 보고 파형의 변화로써 병변의 원인을 파악하는 것은 기본적인 진단 방법이다. 진단을 위해 요골동맥의 촌, 관, 척 세 부위의 맥파를 수지를 통해 일정 가압을 하며 맥의 깊이, 강약, 빠르기 등을 촉진을 통해 맥상을 분석한다. 본 연구에서는 촌, 관, 척 부위를 동시 측정하기 위해 각 부위에 5개의 압력센서 어레이가 적용된 15채널 맥진기를 구성하였다. 또한 요골 동맥 부위에 적정 가압을 유지하기 위해 공기 커프를 이용한 공압 가압 방식을 적용하였다. 본 가압 방식을 통해 요골 동맥 부위에 연속적이며 정밀 가압제어가 가능하였다.

• Journal of Korean Medical classics
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• v.21 no.3
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• pp.119-125
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• 2008

Among the various pulse diagnosis contents in "Hwangjenaegyeong(黃帝內經)", we researched the pulse conditions that are belonged to Sameumsamyang(三陰三陽), and made a comparative study with pulse conditions of five organs[五臟], that of six meridians in "Sanghallon(傷寒論)". So from now on, this study would make help to understand standard pulse condition of Sameumsamyang(三陰三陽) diseases for clinical application. In "Hwangjenaegyeong(黃帝內經)", pulse condition of Taeyang(太陽) is expressed to be floating, Yangmyeong(陽明)'s condition to be strong but with a little bit weakness, Soyang(少陽)'s condition to be intermediate between Eum(陰) and Yang(陽), Taeeum(太陰)'s condition to be low and soft, So-eum(少陰)'s condition to be low and weak with some occasional upward tendency, Gweoleum(厥陰)'s condition to be mixed state of Eum and Yang.

• The Journal of the Society of Korean Medicine Diagnostics
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• v.18 no.2
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• pp.51-62
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• 2014

Objectives The purpose of this study was to determine whether a pulse analyzer was useful to characterize the variables of pulse wave of hypertension (HT), compared with those of normal blood pressure group (NP). Methods The subjects were 22,646 who worked at car manufacturing factory. The pulse wave variables and pulse types measured in Guan by DMP 1000. Results In the main and secondary pulse type, there were significant differences between HT and NP. Whereas, in the field of pulse wave variables, no specific differences were between HT and NP. Conclusion Although pulse wave variables were not statistically significant, pulse analyzer might have reliable diagnostic sensitivity between hypertension and non-hypertension population.

• 한국지구과학회:학술대회논문집
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• 2006.02a
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• pp.230-234
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• 2006

본 연구에서는 미분화 운석 중 오디너리 콘드라이트를 주사전자 현미경으로 관찰하여 열변성, 충격 변성 정도, 지구상에서의 풍화 정도에 따라서 그 구성 성분과 조직이 어떤 변화를 보이는지 알아보았다. 이를 위해 15개의 오디너리 콘드라이트에 대해 각각 연마편 및 연마박편을 준비하였으며, 주사전자 현미경 사진을 이용하여 열변성 단계별로 콘드률과 기질의 경계를 비교하였다. 열변성이 증가할수록 콘드률과 기질의 경계는 점차 모호해 진다. 충격변성을 받았는지의 유무는 감람석을 관찰하여 비교적 쉽게 인지할 수 있다. 충격변성을 받지 않은 콘드률 내의 감람석은 완전 소광과 불규칙적인 깨짐을 보이지만 충격변성을 받은 경우 파동소광과 규칙적인 깨짐을 보인다. 지구상에서 풍화를 받은 경우 철-니켈 금속의 산화가 가장 먼저 진행된다. 풍화에 의한 철산화물은 맥상으로 나타나거나 기존의 철-니켈 금속을 치환하여 나타난다. 철산화물에 의해 풍화를 받은 콘드라이트는 전체적으로 갈색을 띄게 된다.