• Journal of the Korean Operations Research and Management Science Society
• /
• v.6 no.1
• /
• pp.57-64
• /
• 1981

The continuous increase of crude oil consumption has struck great impact into the world economy, When we consider disadvantageous articles in contract for oil import, it would be desirable to import in batch the total quantity of crude oil contracted, but which is not available under the present situation which has many constraints This paper treats of the ways to deliver the crude oil in a given period so as to maximize the profit derived from the sales of oil products, To do this we should consider the prices of crude oil and oil products, inventory cost, transportation cost, oil refinement cost, and fluctuations of these parameters in a given period. The case of Korea Oil Corporation is treated in this paper to generalize the problem of crude oil transportation from Middle East and formulated in a mathematical programming. This programming is transformed into Dynamic Programming through specifing states, stages, payoffs, and recursive function. To clarify these procedure and methods, the case of Korea Oil Corporation is dealt with again and demonstrated in detail.

• Korean Journal of Pharmacognosy
• /
• v.37 no.3
• /
• pp.196-199
• /
• 2006

'An Che Whan(安滯九)' is a Chinese patent medicine which has been used for gastric ulcer and digestive disorder in Korea. It consists of 15 kinds of powdered crude drugs. In powdered crude drugs, it is hard to identify each component by chemical analysis or morphological examination. However, the method of identification of powdered crude drugs has not been clearly established. For the identification of individual crude drugs in such powdery mixtures, a microscopic method may be used conveniently as it requires only a small amount of specimens. In this study, it is demonstrated that the microscopic method is very effective fer the identification of the 15 crude drug ingredients in An Che Whan.

• Korean Journal of Pharmacognosy
• /
• v.39 no.3
• /
• pp.203-207
• /
• 2008

Man Kyung Dan(萬經丹) is a Chinese patent medicine which has been used for rheumatic neuralgia, apoplexy, extremitas neurolepsis in Korea. It consists of 16 kinds of powdered crude drugs. In powered crude drugs, it is hard to identify each component by chemical analysis or morphological examination. However, the method of identification of powdered crude drugs has not been clearly established. For the identification of individual crude drugs in such powdery mixtures, microscopic method may advantageously be used, as it requires only small amount of specimens. In this study, it is demonstrated that the microscopic method is very effective for the identification of 16 crude drug ingredients in Man kyung Dan.

• Korean Journal of Pharmacognosy
• /
• v.38 no.1
• /
• pp.90-94
• /
• 2007

This study was examined the chemical components and total phenol content in acorn powders of Korea and China. Korea acorn powder produced from consists of 6.85% crude protein, 3.57% crude fat and 3.33% crude ash. China acorn powder consists of 1.83% crude protein, 0.41% crude fat and 0.40% crude ash. The composition of unsaturated fatty acid of Korea acorn powder was slightly lower than China acorn powder, but there was no significant difference. The amino acid content of Korea acorn powder was higher than that of China acorn powder. Total phenol content of that Korea acorn powder was 20 mg/g, and that China acorn powder was 3.2 mg/g.

• The Korean Journal of Mycology
• /
• v.8 no.1
• /
• pp.21-23
• /
• 1980

To investigate constituents of Lentinus edodes grown on various, quantitative analyses of ash, crude protein, crude fiber, crude fat, water, nonsoluble nitrogen of the mushrooms were carried out by ordinary methods. The crude fat of the mushroom grown on chestnut tree(1.82%) was greater than that grown on oak (0.76%) or alder (1.17%) tree. The crude fiber of the mushroom grown on oak tree (12.50%) was greater than those grown on alder and chestnut trees, 9.85% and 8.52%, respectively. The crude protein, ash, nonsoluble nitrogen and water contents of the mushrooms grown on the three different trees were similar.

• Textile Coloration and Finishing
• /
• v.7 no.2
• /
• pp.9-16
• /
• 1995

When alkaline waste water of PET fabric is treated with sulfuric acid, undegradable material, crude TPA sludge is generated, so that treatment has a serious problem. The result of DMT synthesis using crude TPA sludge generated from PET alkaline waste water were as follows: 1. When crude TPA generated from alkaline waste water is reactioned with methanol under catalyst of sulfuric acid, pure DMT can be obtained. 2. In DMT synthesis from crude TPA, addition of copper sulfate can increase yield, and increasing the amount of sulfuric acid can shorten reaction time.

• Korean Journal of Pharmacognosy
• /
• v.36 no.4 s.143
• /
• pp.278-281
• /
• 2005

'Hwan So Dan(還少丹)' is Chinese patent medicine which has been used for shortage of vitality and asthenia in Korea. It consists of 14 kinds of powdered crude drugs. In powdered crude drugs, it is hard to identify each component by chemical analysis or morphological examination. However, the method of identification of powdered crude drugs has not been clearly established. For the identification of individual crude drugs in such powdery mixtures, microscopic method may advantageously be used as it requires only a small amount specimens. In this study, it is demonstrated that the microscopic method is very effective for the identification of 14 crude drug ingredients in Hwan So Dan.

• Korean Journal of Pharmacognosy
• /
• v.37 no.1 s.144
• /
• pp.11-15
• /
• 2006

Hwan Myeong Hwan (環明丸) is Chinese patent medicine which is used for presbyopia and eye disease. It consists of 23 kind of powdered crude drugs. In powered crude drugs, it is hard to identify each component by chemical analysis or morphological examination. However, the method of identification of powdered crude drugs has not been clearly established. For the identification of individual crude drugs in such powdery mixtures, microscopic method may advantageously be used as it requires only a small amount of specimens. In this study, it is demonstrated that the microscopic method is very effective for the identification of 23 crude drug ingredients in Hwan Myeong Hwan.

• Korean Journal of Pharmacognosy
• /
• v.39 no.1
• /
• pp.43-49
• /
• 2008

Dae Jeong Hwan (大精丸) is a Chinese patent medicine which has been used for improvement of lassitude, anorexia, and enervation in Korea. It consists of 24 kinds of powdered crude drugs. In powered crude drugs, it is hard to identify each component by chemical analysis or morphological examination. However, the method of identification of powdered crude drugs has not been clearly established. For the identification of individual crude drugs in such powdery mixtures, microscopic method may advantageously be used, as it requires only small amount of specimens. In this study, it is demonstrated that the microscopic method is very effective for the identification of 24 crude drug ingredients in Dae Jeong Hwan.

• Journal of Ginseng Research
• /
• v.17 no.3
• /
• pp.196-202
• /
• 1993

A study was performed to compare the anticancer effects of Korean and Chinese red ginseng roots. The whole crude extracts or chloroform, methanol and acetone fractions of the crude extracts were added in the culture medium of three cancer cell lines, a mouse leukemia cell line ($P_{388}$), a human colon carcinoma cell line (HT-29) and a human rectal carcinoma cell line (HRT-18), to screen the growth inhibition effects. The results are summarized as follows : 1. Crude extracts of both Korean and Chinese red ginseng roots inhibited the proliferation of all the three cancer cell lines tested in a dose dependent manner. However, the growth inhibition effects of Korean red ginseng extracts were significantly greater than that of Chinese red ginseng. 2. An acetone fraction showed the greatest antiproliferative effects among the 11'hole crude extracts, chloroform, methanol and acetone fractions of the crude extracts. 3. These results suggest that the active antiproliferative components of the crude extracts are present mostly in the acetone fraction.