• Monthly Duck's Village
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• s.2
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• pp.1-4
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• 1998

• Monthly Duck's Village
• /
• s.14
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• pp.2-5
• /
• 1999

• Monthly Duck's Village
• /
• s.7
• /
• pp.3-5
• /
• 1999

• Monthly Duck's Village
• /
• s.9
• /
• pp.16-18
• /
• 1999

• Life and Agrochemicals
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• s.262
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• pp.56-56
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• 2010

• Monthly Korean Chicken
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• v.3 no.10 s.28
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• pp.1-1
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• 1997

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.6
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• pp.460-471
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• 2019

The aim of this study was to examine the scale and market share of Chinese's research facility & equipment in the domestic research equipment market of basic and analytical science field for analyzing the difference of the number and amount of construction by year of acquisition, national research facility equipment standard classification code, and type of institution based on the information of the research equipment invested by the Korean government for the past 14 years. In addition, we analyzed the correlation among the year of acquisition, equipment standard classification code, and type of institution variables. As of January 1 2019, from 2005 to 2018, 50 Chinese's research facilities & equipments (main equipment with a construction cost of 30 million won or more) built in the basic and analytical science fields were selected for this study and their number of construction, amount of construction, year of acquisition, type of institution, and standard classification code were analyzed. Differences of the number and amount of construction with-in and by year of acquisition, standard classification code, and type of institution were tested using a single sample Chi-square test, Mann-Whitney U test, and Kruskal-wallis test. The correlation among the three variables was analyzed by using the Chi-square test of cross-tabulation analysis. And there was a statistically significant correlation among the year of acquisition, standard classification code, and type of institution (p<.05). Compared to the 2000s, in the 2010s, high-priced Optical Electronics/Video Equipment was installed at private universities, private enterprises, and government-affiliated research institute. Therefore, the domestic construction status of Chinese's research facility & equipment in the basic science and analytical science field is less than that of the domestic ones, but the number and the amount of construction are increasing statistically. So it is necessary for the government to be able to recognize the possibility that the Chinese's research facility and equipment can encroach on the domestic research industry market and to prepare related provision.

• Journal of the Speleological Society of Korea
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• no.77
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• pp.43-52
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• 2007

중국 호남성의 장가계시 무릉원(武陵源)에는 위로 천문산(天門山)의 천문동(天門洞)과 땅 아래로 뻗혀 있는 황룡동굴(黃龍洞窟)이 있다. 천문동은 오나라 때의 대지진으로 인하여 생긴 것이며, 황룡동굴은 이 지역에 분포된 석회암 지대로 말미암아 영겁의 세월을 통하여 생성된 지하생성물의 극치이다. 천문산 고봉의 하늘 맞닿은 높은 곳에 형성된 천문동혈(天門同穴)과, 4층 규모로 된 땅속의 산 같은 석회동 구조물과 강물을 무색케 하는 지중뱃길수로를 끌어안고 있는 황룡동굴은 과연 천산용동(天山龍洞)의 바로 그것이 아닌가. [답사보고서 중에서]

• The Korean Journal of Zoology
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• v.30 no.1
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• pp.71-78
• /
• 1987

한국산 기름종개의 학명사용에 정확을 기하기 위하여 우리나라 낙동강의 15개수역에서 채집된 1,472마리의 기름종개 표본과 유럽산 기름종개 표본을 비교검토하였다. 종전에 국내에서 C.taenia로 간주하였던 낙동강산 표본은 체측과 배면 반문의 수와 모양, 입수염의 길이, 및 안하극말단의 위치등의 유럽산 C.taenia와는 달리 중국산 C. sinensis와 더 유사하였다. 따라서 우리나라 낙동강산 기름종개 표본은 Cobitis sinensis et Dabry, 1874의 학명을 사용하는 것이 타당하다고 판단된다.

• Korean Journal of Soil Science and Fertilizer
• /
• v.29 no.2
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• pp.113-123
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• 1996

This experiment was carried out to compare with the physico-chemical properties of granular fused magnesium phosphates which were two domestic products(Pungnong Biryo Industrial Co., LTD and Kyunggi Chemical Industrial Co., LTD) and a imported Chinese product. The changes of pH, distribution of particle size, disintegration in water and in soil, hardness in soil, chemical composition, and dissolution rates in water, in soil and in 2% citric acid solution were investigated. The changes in pH were bigger in Jungmun series(black volcanic soil), in the imported chinese product, and in Jungmun series with the larger quantities applied. The domestic products were lower in pH, calcium, alkalinity and 1/2N-HCl soluble silicate than the Chinese product but total(Aqua regia) soluble phosphate, 2% citric acid soluble phosphate, 1/2N-HCl soluble and 2% citric acid soluble magnesium, and 2% citric acid soluble manganese concentration were similar among the domestic products and the imported product. In particle sizes, Chinese product was the biggest, Kyunggi product was the next, and Pungnong product was the smallest. The changes of disintegration rate in water and in soil were smaller in Pungnong and Kyunggi products at the early days of dissolution, and there were decreased with the order of Kyunggi product> Chinese product> Pungnong product at the latter days. The hardness of the products in soil was the strongest in Kyunggi product, the next was Pungnong product and Chinese product was the weakest so as to hardly measurable. The changing dissolution rates of 2% citric acid soluble phosphate concentration of granular fused magnesium phosphate products were the highest in Kyunggi product and the lowest in Pungnong product at the early days, the three products were dissolved over 90% within 50 days, and there were no clear difference among the products after 70 days of dissolution. The dissolution rates of 2% citric acid soluble phosphate concentration of granular fused magnesium phosphate products in soil were the highest in Pungnong product and Chinese product was the lowest, but they were less than 60% in 100 days of dissolution.