• Asian-Australasian Journal of Animal Sciences
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• v.12 no.6
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• pp.1002-1008
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• 1999

Essential metabolic functions have been identified for seven macrominerals (calcirum, phosprorus, magnesium, sodium, potassium, chloride, and sulfur), and eight microminerals (cobalt, copper, iodine, iron, manganese, molybdenum, selenium, and zinc). Major functions for each of these minerals are summarized. Considerable research suggests that chromium is also essential and that it functions by facilitating insulin activity. Studies are reviewed which indicate that chromium supplementation of animal diets may: 1) increase glucose removal from blood, 2) reduce carcass fat and increase lean in nonruminants, 3) alter egg cholesterol content, and 4) enhance immunity and disease resistance in ruminants. A number of other minerals including nickel, boron, vanadium, arsenic, silicon, lithum, and lead have been reported to be essential, but specific metabolic functions have not been defined for any of these elements. Limited research in poultry suggests that boron may be of practical significance in some instances.

• Proceedings of the Korean Institute of Resources Recycling Conference
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• 2004.05a
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• pp.74-81
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• 2004

• Economic and Environmental Geology
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• v.25 no.1
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• pp.17-25
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• 1992

South ore deposits of the Dunjeon gold mine is a fissure-filling vein emplaced in the Cretaceous granodiorite, skarnized and/or hornfelsified Ordovician Dumudong Formation. Mineralization can be divided into three distinct depositional stages on the basis of vein structure and mineral assemblages. Sb, Bi sulfosalts minerals, such as tetrahedrite, bournonite, boulangerite, cosalite, lillianite, heyrovskyite, unknown Pb-Bi-Sb-S mineral, native Sb, native Bi and Au-Ag minerals are mainly deposited in stage II. The formation temperature and sulfur fugacties of Sb, Bi minerals in the stage II deduced from thermodynamic considerations are from $172^{\circ}$ to $378^{\circ}C$ and $10^{-10.6}$ to $10^{-19.4}$ atm. Those temperatures are good agreement with temperature data obtained by fluid inclusion study which has reported already.

• Economic and Environmental Geology
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• v.26 no.1
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• pp.1-10
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• 1993

The Andong serpentinite body is distributed along the Andong fault, and shows an elliptical shape. The serpentinite is composed of serpentine minerals and other various minerals such as forsterite, pyroxene, talc, tremolite, chlorite, prehnite, calcite and dolomite. The serpentine minerals consist primarily of lizardite with minor chrysotile. Antigorite rarely occurs in some veins. The serpentinite is largely divided into two alteration zones by the occurrence and mineral assemblages. One of the alteration zones is composed of a large amount of serpentine minerals. The other is characterized by tremolite and chlorite. The alteration zone composed of tremolite and chlorite seems to have been formed by hydrothermal alteration after the formation of serpentinite. It is considered that the serpentinite have been formed by alteration of the ultramafic rock such as peridotite.

• Industrial Engineering and Management Systems
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• v.9 no.1
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• pp.60-68
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• 2010

In this paper, a systematic methodology is proposed for developing an outcome-based undergraduate Industrial and Systems Engineering Program at the Systems Engineering Department of King Fahd University of Petroleum & Minerals (KFUPM) in Saudi Arabia. This program is an upgrade of the Industrial Engineering and Operations Research (IE/OR) option, which has been in existence since 1984 and has been revised several times since then. The methodology and process used is motivated by the Accreditation Board for Engineering and Technology (ABET) 2000 criteria and has been employed to develop the program's objectives and outcomes. Subsequently, a curriculum is designed that is expected to deliver the objectives and outcomes. The paper presents the methodology, objectives, outcomes and the developed curriculum of the outcome-based program.

• Korean Journal of Plant Resources
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• v.11 no.1
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• pp.47-50
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• 1998

For the quantitiative determination of chemical and taste components in black omija(Schizandra nigra Max) and omija(S.chinensis), compositions of free sugars, free amino acids, total amino acids, and minerals were analyzed. Among the total free sugars in black omija and omija, glucose and frutose were major free sugars and sucrose was little amount. The most abundant free amino acid in black imija was histidine and that in imija was serine. The major free amino acid in black omija and omija were histidine, serine, glutamic acid and aspartic acid. The major total amino acids in black omija and omija were glutamic acid, arginine , leucine and histidine. The limiting amino acid of each omija was S-containing amino acids. The abuntdant minerals in black omija and omija were K and Ca.

• Journal of the Mineralogical Society of Korea
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• v.4 no.2
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• pp.141-146
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• 1991

Minerals of system Ag-Sb have been found in iead-zinc (-silver) ores from the Dongjeom and the Taebaeg ore deposits, which were formed at later stage of the Yeonhwa 1 mine mineralization. The Ag-Sb minerals are intergrown intimately with galena, pyrargyrite and alabandite. Their chemical compositions as determined by electron microprobe analyser show that they are chracterized by relatively high content of S, up to 5.89 atomic percent. Also the composition of the minerals may be separated into two: Ag3.89 Sb1.00-Ag7.19 Sb1.00 and Ag2.96 Sb1.00-Ag4.00 Sb1.00.

• Resources Recycling
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• v.8 no.5
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• pp.3-10
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• 1999

• Economic and Environmental Geology
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• v.21 no.3
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• pp.309-318
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• 1988

South Korea has about 50 useful mineral commodities for the mineral resources, among 330 kinds of minerals desoribed. In 1986, she exported 14 mineral commodities of silver, lead, tungsten, molybdenite, ceramic minerals, limestone and graphite etc... And the component ratio of mining industry in the gross national production (GNP) of South korea maintains 1.5% during last five years(1982 to 1986).

• Journal of the Mineralogical Society of Korea
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• v.7 no.1
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• pp.1-13
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• 1994

The industrial minerals play an important role in mining sector. More than 70 % of total mineral production come from industrial mineral sector. This paper reviews geological occurrence of kaolin, pyrophyllite and limestone, and current demand-supply status of major industrial minerals in the Republic of Korea. The kaolin is mainly distributed in the Kyeongsang province, formed by deep weathering of Precambrian anorthosite on mountainside of gentle slope. The pyrophyllite mainly occurs in the Kyeongsang and Chulla provinces, formed by hydrothermal alteration of late Cretaceous andesitic and rhyolitic rocks. Pyrophyllite comprises massive and lenticular bodies and contains minor amounts of kaolin, alunite and pyrite, in some places andalusite and illite. The limestone(Great Limestone Series of Cambrian age) is distributed widely in the Kwangwon and Chungcheong provinces. The limestone bodies are approzimately 70 km long and 3 km wide, elongated NE-ward, and show high grade of CaO content. In 1992, the self-sufficiency ratio of 44 nonfuel (metallic and non-metallic) minerals was no more than 30 percent. However, the ratio of 27 industrial minerals (non-metallic) represents high value of about 72 percent. The export/productjon ratio of the industrial minerals shows decreasing patterns from 12.2 % in 1983 to 4.2 % in 1992. Also the import/production ratio shows rapidly decreasing pattern from 84 % in 1983 to 38.2 % in 1992.