• Korean Journal of Poultry Science
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• v.6 no.1
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• pp.1-11
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• 1979

왈드롭 박사는 1959년 테네시 대학교의 가금학과를 졸업하고 1962년에 프로리다 대학교에서 가금영양학 전공으로 석사학위를 받았다. 이어서 1965년 동 대학교에서 가축영양학 및 생화학 전공으로 박사학위를 받고 프로리다 대학교 가금학과 조교수를 거쳐 1966년 이후 현재까지 아칸다스 대학교 축산학과에서 교수로 있다. 그동안 가금영양학 분야의 우수학자로서 미국 사료제조업자상 등 여러 개의 상을 받은바 있어서 현재 주로 닭의 생산능력과 부화향상을 위한 연구와 영양소함량과 사료 가공이 가금의 능력향상에 미치는 영향에 대해서 연구하고 있다.

• KOREAN POULTRY JOURNAL
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• v.11 no.4 s.114
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• pp.160-170
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• 1979

월드롭 박사는 1959년 테네시 대학교의 가금학과를 졸업하고 1962년에 프로리다 대학교에서 가금영양학 전공으로 석사학위를 받았다. 이어서 1965년 동대학교에서 가축영양학 및 생화학 전공으로 박사학위를 받고 프로리다대학교 가금학과 조교수를 거쳐 1966년 이후 현재까지 아칸다스대학교 축산학과에서 교수로 있다. 그동안 가금영양학 분야의 우수학자로서 미국사료제조업자상 등 여러 개의 상을 받은바 있어서 현재 주로 닭의 생산능력과 부화향상을 위한 연구와 영양소 함량과 사료 가공이 가금의 능력향상에 미치는 영향에 대해서 연구하고 있다.

• The Journal of the Convergence on Culture Technology
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• v.10 no.2
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• pp.73-80
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• 2024

To determinate the content of acanthoic acid and kaurenoic acid in 70% EtOH and hot water extracts of Eleutherococcus gracilistylus, quantitative analysis of each compound in samples was carried out by a HPLC-UVD. Also, the identification of each acompound in samples was successfully assigned by LC-MS analysis. In result, the contents of acanthoic acid and kaurenoic acid in 70% ethanoic extracts were 28.84±0.21 mg/g (2.88%), 26.38±1.63 mg/g (2.64%), respectively. However, the content of two compounds in hot-water extracts was not observed. In conclusion, it shows that 70% ethanol as a best extraction solvent to extract the acanthoic acid and its metabolite from Eleutherococcus gracilistylus was better than hot-water solvent. The 70% ethanol complex extract of Allium Hookeri and Eleutherococcus gracilistylus showed better effectiveness. In addition, the 70% ethanol extract complex of Allium Hookeri and Eleutherococcus gracilistylus showed better effects than the hot water solvent of DPPH radical scavenging ability, total polyphenols, and flavonoids content. The anti-inflammatory activity were significantly or partially reduced by treatment with ethanol extract complex(SEC) by Allium Hookeri and Eleutherococcus gracilistylus.

• Economic and Environmental Geology
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• v.50 no.2
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• pp.85-96
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• 2017

Gold mineralization of Samjeong and Yongjang gold mines in Uichang area shows characteristics of Bonanza-type gold deposits. Ores are mainly developed along the contact parts between quartz vein and arkosic sandstone beds(Fe-rich bed) in sedimentary rock. Electrum, silver sulfide and sulfate minerals are mainly in the ores. On the other hand, gold mineralization is less developed in cherty rock and andesitic rock than arkosic sandstone. The study highlights characteristics of gold precipitation in the deposit on the basis of numerical modelling of the reactions between the assumed hydrothermal ore fluids with multicomponent heterogeneous equilibrium calculations. Aqueous species, gases and minerals, containing electrum are included in the calculations. The reaction result between hydrothermal ore fluids and arkosic sandstone show that pH increasing in the ore-forming fluid would trigger precipitation of quartz, chlorite, sericite, chalcopyrite, galena, pyrite, electrum, actinolite and feldspar. The numerical modelling also illustrates the drastic increase of pH and desulfidation lead to precipitation of electrum. Ag/Au ratios in the ore vary with pH conditions and subsequently precipitation of silver-bearing sulfides such as acanthite and polybasite. The modelling of the reaction between andesitic rock and ore-forming fluid shows that mineral assemblages of the case are analogous to ones of the reaction between arkosic sandstone and fluid except the latter has little portion of electrum. The abovementioned modelling results suggest that gold-silver mineralization is bounded by host rocks at the study area.

• Cross-Cultural Studies
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• v.44
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• pp.343-372
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• 2016

This paper introduces symbols from Ghana, the 'Adinkra', and expands upon the concepts associated with it. In other words, the world view, values and scalability that appear to form philosophical thoughts in everyday life. 'Adinkra' are symbols from Ghana in West Africa. Adinkra means 'goodbye' or 'farewell'. There are some 400 Adinkra symbols, but the meanings of the symbols have been lost. The first book on Adinkra is 'The Adinkra Dictionary' (1998) by W. Bruce Willis. Adinkra is related to the Ghanaian culture, and represents concepts such as philosophical ideology, history, historical figures, myths, legends, animals, plants, etc. In the old days, because of its meaning-'goodbye' or 'farewell'-Adinkra was generally used for funerals. But today, Adinkra is utilized in a full range of cultural events and activities. Each of the 'Adinkra' has various meanings. According to Willis, Adinkra is ever-evolving and constantly expanding. As a matter of fact, Adinkra continues to expand, evolve and develop. Nevertheless, no books have been published on Adinkra since Bruce Willis (5 May 2016 to the present). Adinkra provides insights into the rich philosophical, educational, and historical significance of Africa. Therefore, Adinkra requires evolution, expansion, and research. In this study, we will examine the Adinkra, divided into four categories. The first is related to God and the powers, the second is related to moral education. The third symbolizes 'love' and 'friendship'. and lastly, the fourth is 'life' and 'death'.

• Economic and Environmental Geology
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• v.34 no.6
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• pp.507-522
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• 2001

At the Tongyeong mine, quartz, rhodochrosite (kutnahorite), muscovite, illite, pyrite, galena, chalcopyrite. sphalerite, acanthite, and hessite are the principal vein minerals. They were deposited under epithermal conditions in two stages. Ore mineral assemblages and associated gangue phases in stage can be clearly divided into two general associations: an early cycle (band) that appeared with introduction of most of the sulfides and electrum, and a later cycle in which base metal and carbonate-bearing assemblages (mostly rhodochrosite) became dominant. Tellurides and some electrum occur as small rounded grains within subhedral-to euhedral pyrite or anhedral galena in stageII. Sulfide mineralization is zoned from pyrite to galena and sphalerite. We have used computer modeling to simulate formation of four stages of vein genesis. The reaction of a single fluid with andesite host rock at 28$0^{\circ}C$, isobaric cooling of a single fluid from 26$0^{\circ}C$ to 12$0^{\circ}C$, and boiling and mixing of a fluid with both decreasing pressure and temperature were studied using the CHILLER program. Calculations show that the precipitation of alteration minerals is due to fluid-andesite interaction as temperature drops. Speciation calculations confirm that the hydrothermal fluids with moderately high salinities and pH 5.7 (acid), were capable of transporting significant quantities of base metals. The abundance of gold in fluid depends critically on the ratio of total base metals and iron to sulfide in the aqueous phase because gold is transported as an Au(HS)$_2$- complex, which is sensitive to sulfide activity. Modeling results for Tongyeong mineralization show strong influence of shallow hydrogenic processes such as boiling and fluid mixing. The variable handing in stageII mineralization is best explained by maltiple boilings of hydrothermal fluid followed by lateral mixing of the fluid with overlying diluted, steam-heated ground water. The degree of similarity of calculated mineral assemblages and observed electrum composition and field relationships shows the utility of the numerical simulation method in identifying chemical processes that accompany boiling and mixing in Te-bearing Au-Ag system. This has been applied in models to narrow the search area for epithermal ores.