• RED RIBBON
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• s.69
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• pp.14-15
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• 2006

황사란 무엇인가? 중국, 몽고, 만주의 사막지대, 황하 중류의 황토지대에서 발생한 미세한 토양 입자가 대기 중에 운반되어 낙하하는 자연현상이다. HIV 감염인이나 에이즈 환자에게 황사가 특별히 더 위험하지는 않으며 일반인들처럼 주의를 기울이면 된다.

• 건강소식
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• v.9 no.12 s.85
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• pp.19-22
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• 1985

건강관리 사업에서 가장 기초적이며 중요한 분야가 건강 상담과 건강진단 업무라고 할 수 있으며 비교적 쉽게 접근할 수 있으므로 현상 황하에서는 이 사업이 건강관리대책의 중심사업이 될 수 있다.

• 전기산업
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• v.7 no.2
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• pp.110-113
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• 1996

• The Korean Journal of Quaternary Research
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• v.16 no.1
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• pp.1-16
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• 2002

A total of 4 muddy sediment samples collected from the Central Yellow Sea were analyzed for chemical composition. The results are compared with the previously published Huanghe, Changjiang and Keum River geochemical data in order to understand provenance and sedimentation of fine-grained mud, and the sediment accumulation rates estimated. The sandy sediment facies is distributed in the eastern area, a patch of fine-grained mud exists in the western central prat, and the sandy mud and clay sedimentary facies shot. north to south zonal distribution in the central region. The content of calcium carbonate ranges from 2.8 to 10.5%, and its distributional trends to be more concentrated on the western muddy sediments near toward the China side rather than on the eastern sandy sediments. The accumulation rates obtained using Pb-210 geochronologies for the muddy sediments in the Central Yellow Sea showed ranges from 0.21 to 0.68 cm/yr or 0.176 to 0.714 g/$\textrm{cm}^2$. yr. The sedimentation rate from core CY96010 located in the eastern near side of Shandong Peninsula which is affected by the Huanghe River shows 0.68 cm/yr or 0.714 g/$\textrm{cm}^2$ . yr. The sediment cores CY96008 and CY96002 in the Central Yellow Sea, the estimated of sediment accumulation rates shows 0.21~0.23cm1yr or 0.176~0.220 9/$\textrm{cm}^2$.Vr respectively, which are much lower than above samples. These indicate that the muddy sediments in central area of the Yellow Sea may have received influence of the sediment discharge from the Huanghe River. The concentrations of Ca, Na, Sr, Ho, La, Tb, Ta and Ca/Ti ratio of the muddy sediments in the Central Yellow Sea are higher than those of the Changjiang sediments and lower than those of the Huanghe sediments. However, these element values showed similar concentration patterns than those of the Huanghe sediment. The element contents such as Fe, Ti, Nl, Co, Cr, Cu, Pb, Sc, Ce, Nd, Sm, Eu, Cd and Dy in the study area are higher than those of the Huanghe sediments and lower than the Changjiang River sediments, but these values showed close to resemblance content trends those of the Changjiang sediment. The concentration of Mn, K and Sr in sediments of the study area are similar to those of the Keum River and eastern Yellow Sea sediment. They are rich in Zn, Rb, Cd, U, Cs and Li than those of the other comparison legions. Therefore, the terrigenous materials sources of the muddy sediment in the Central Yellow Sea comes mainly from Huanghe River in the past and present, and also have party derived from the Changjiang and Keum River, while the biological deposit in this area are carried by the Yellow Sea Warm Current.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 1988.12a
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• pp.24-24
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• 1988

• Journal of the Korean earth science society
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• v.27 no.2
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• pp.198-208
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• 2006

To investigate the provenance of outer-shelf mud patch in the East China Sea, the geochemical compositions were analyzed and compared with those of Chinese rivers sediments. The mud sedimentary facies are distributed in the central region and sandy mud facies are also widely distributed around the study area. The major elements (Fe, Mg, K, Ti, and Mn) show strong positive correlation with Al, and trace elements also indicate the same characteristics; hence, clay minerals are likely to be the promising host for those elements. The high concentration of Fe, Ti, and Mn elements are found in the western middle part near the Changjiang estuary, indicating that it seems to result from the influence of the Changjiang River. Elemental ratios including Sc/Al, Ti/Nb, Th/Sc, Cr/Th, Nb/Co, and Th/U were thus used as provenance indicators to identify the sediment origins of the East China Sea. The discrimination diagrams clearly show that most of the sediment in the northern part are originated from the Huanghe River, while the muddy sediments in the western part near the Changjiang estuary might come from the Changjiang River, suggesting that the outer-shelf muddy sediments of East China Sea are originated from diverse sources.

• Journal of the Korean earth science society
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• v.29 no.4
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• pp.328-340
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• 2008

To discriminate the provenance of shelf sediments in the western part off Jeju Island, the textual and elemental compositions were analyzed and compared with the sediments originating from Changjiang and Huanghe Rivers of China and the Korean (Keum) River. The sediments in the study area are composed of coarse silt with a mean pain size of $3.6{\sim}8.5{\phi}$ and their $CaCO_3$ contents ranged from 0.92 to 9.75 wt.%. The ratios of TOC over total nitrogen (TN) showed that the study area sediments contained more organic matters of marine origin than those of terrigenous origin. The high concentration of Fe/Al, Ti/Al and Mn/Al figures were found in the southwestern part near the Changjiang esturay, indicating that it seemed to result from the influence of the Changjiang River. The discrimination diagrams including Sc/Al vs Cr/Th, Th/Sc vs Nb/Co and Ti/Nb vs Th/Sc were thus used as provenance indicators to identify the sediment origins of the western part off Jeju Island. Based on these discriminated diagrams it clearly showed that most of the sediment in the western part were originated from the Huanghe River, but the sediments in the southwestern part near the Changjiang esturay might come from the Changjiang River. In contrast, the sediment samples of the northeastern part showed the higher figures than those of the river sediments and other regions, suggesting that the sediments in the western part off Jeju Island must be originated from diverse sources.

• Journal of the Korean Crystal Growth and Crystal Technology
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• v.33 no.5
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• pp.174-180
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• 2023

Porcelain (white ware, celadon ware) coated with a ferrous sulfate and ferrous/cobalt sulfate was sintered at 1250℃. The specimens were investigated by HR-XRD, FE-SEM, HR-EDS, and UV-vis spectrophotometer. Through X-ray rietveld quantitative analysis, quartz and mullite were found to be the main phases for white ware, and mullite and plagioclase were found to be the main phases for celadon ware. When the pigment of ferrous/cobalt sulfate was applied, were identified as an andradite phase for celadon ware and a spinel phase for the white ware, and the amorphous phase, respectively. The L^* value, which was the brightness of the specimen, was 72.01, 60.92 for white ware and celadon ware, respectively. The ferrous and ferrous/cobalt pigment coated porcelain had L^* values of 44.89, 52.27 for white ware and celadon ware, respectively; with a^* values of 2.12, 1.40, an d at b^* values of 1.45 and 13.79. As for the color of the specimens, it was found that the L^* value was greatly affected by the white ware, and the b^* value differed greatly depending on the clay. It was thought to be closely related to the production of the secondary phase such as Fe₂O₃ and andradite phase produced in the surface layer.

• Proceedings of the Speleological Society Conference
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• 1993.07a
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• pp.155-159
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• 1993

중국에서는 동굴 탐험이 그다지 이루어지지 않은 상태이다. 남부의 귀주와 광서지방에는 광대한 카르스트지대가 펼쳐진다. 광서지방의 탑모양의 카르스트는 바늘봉 같은 특이한 풍경을 이루어, 옛날 그림에도 자주 묘사되고있다. 하나하나가 탑모양의 석회암에는, 짧은 동굴이 벌집처럼 발달하고 있다. 귀주지방에도 넓은 석회암대지가 있는데, 많은 큰 하천이 지하를 흐르면서, 멋진 동굴이 발달되어 있다. 귀주의 두세개의 동굴은 상당한 규모의 동굴이 있는데 높이, 폭 모두 30m 이상이 되는 것도 있다. 중국에 가장 유명한 동굴은 반대로 북부지방의 많은 작은 동굴이다. 주거지로 옛날에 인공적으로 파진 동굴로, 황하분지에 많다. 부드러운 황도를 파서 예배당으로 이용된 것도 많다. 또 유명한 주거점의 동굴에서 북경원인의 화석이 발견되고 있다.(중략)

• Proceedings of the Speleological Society Conference
• /
• 1994.11a
• /
• pp.119-120
• /
• 1994

중국에서는 동굴 탐험이 그다지 이루어지지 않은 상태이다. 남부의 귀주와 광서지방에는 광대한 카르스트지대가 펼쳐진다. 광서지방의 탑모양의 카르스트는 바늘봉 같은 특이한 풍경을 이루어, 옛날 그림에도 자주 묘사되고 있다. 하나하나가 탑모양의 석회암에는, 짧은 동굴이 벌집처럼 발달하고 있다. 귀주지방에도 넓은 석회암대지가 있는데, 많은 큰 하천이 지하를 흐르면서, 멋진 동굴이 발달되어 있다. 귀주의 두세개의 동굴은 상당한 규모의 동굴이 있는데 높이, 폭 모두 30m 이상이 되는 것도 있다. 중국에 가장 유명한 동굴은 반대로 북부지방의 많은 작은 동굴이다. 주거지로 옛날에 인공적으로 파진 동굴로, 황하분지에 많다. 부드러운 황도를 파서 예배당으로 이용된 것도 많다. 또 유명한 주구점의 동굴에서 북경원인의 화석이 발견되고 있다.(중략)