• Economic and Environmental Geology
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• v.38 no.2 s.171
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• pp.197-206
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• 2005

North Korea is plentiful in the mineral resources as magnesite, gold, zinc, iron, rare metal, and coal resources compared to South Korea and has 6 industrial zones which are located nearby to the mineralized areas. The industrial zones are provided with a sound infrastructures and accumulation of advanced technology. As a huge mineral and energy consuming country, South Korea imports mineral and coal resources equivalent to almost 8 trillion won annually. Inter-Korean cooperation for development of mineral resources in North Korea will be improved by the practical use of the North Korea's plentiful mineral resources, infiastructures related to development and refinement, and basic geo-technology, which would be considered toward combining with South Korean capital and Russian geo-technologies.

• Asian-Australasian Journal of Animal Sciences
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• v.23 no.8
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• pp.1057-1065
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• 2010

Two experiments were conducted to compare the effects of feeding a newly-developed rare earth mineral-yeast product, zinc oxide (ZnO) or antibiotics on the performance, nutrient digestibility and serum parameters of weanling pigs. In experiment 1, 150 crossbred barrows (24 d old and 6.28 kg BW) were fed one of five dietary treatments consisting of an unsupplemented basal diet or the basal diet supplemented with antibiotics (33 ppm tiamulin and 100 ppm chlortetracycline), ZnO (1,500 or 2,500 ppm) or 0.1% peptide-bound rare earth mineral-yeast. In experiment 2, 576 crossbred barrows (28 d old and 7.20 kg BW) were fed the same diets as those used in experiment 1 modified only by the addition of 1.0% Celite 545 to all diets as a digestibility marker. However, the negative control was not included. In experiment 1, weight gain was significantly lower (p<0.05) for pigs fed the negative control than for pigs fed diets supplemented with antibiotics, ZnO, or rare earth mineral-yeast. Pig performance did not differ between pigs fed the four supplemented diets. In experiment 2, there were no differences in performance between pigs fed diets supplemented with antibiotic, ZnO or rare earth mineral-yeast. The digestibility of dry matter, crude protein, calcium, phosphorus and energy were significantly (p<0.01) higher on the rare earth mineral-yeast diet than on diets supplemented with ZnO. In addition, pigs fed the diet supplemented with rare earth mineral-yeast had significantly (p<0.05) higher digestibility of histidine, lysine, threonine and valine than pigs fed the ZnO supplemented diets. Digestibility coefficients for pigs fed antibiotics tended to be intermediate to those of pigs fed rare earth mineralyeast or ZnO. In conclusion, the performance of pigs fed rare earth mineral-yeast was basically equal to that of pigs fed antibiotics or ZnO indicating that rare earth mineral-yeast can be successfully used as a growth promoter in diets fed to nursery pigs. The effects of rare earth mineral-yeast appeared to be mediated through improvements in nutrient digestibility.

• Nutrition Research and Practice
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• v.3 no.3
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• pp.212-219
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• 2009

This study was performed to investigate the association between hair mineral levels and nutrient intakes, age, and BMI in female adults who visited a woman's clinic located in Seoul. Dietary intakes were assessed by food frequency questionnaire and mineral levels were measured in collected hairs, and the relationship between these was examined. The average daily nutrient intakes of subjects were compared to those of the KDRIs, and the energy intake status was fair. The average intake of calcium in women of 50 years and over was 91.35% of KDRls and the potassium intake was greatly below the recommended levels in all age groups. In the average hair mineral contents in subjects, calcium and copper exceeded far more than the reference range while selenium was very low with 85.19% of subjects being lower than the reference value. In addition, the concentrations of sodium, potassium, iron, and manganese in the hair were below the reference ranges in over 15% of subjects. The concentrations of sodium, chromium, sulfur, and cadmium in the hair showed positive correlations (P < 0.05) with age, but the hair zinc level showed a negative correlation (P < 0.05) with age. The concentrations of sodium, potassium, chromium, and cadmium in the hair showed positive correlations (P < 0.05) with BMI. Some mineral levels in subjects of this study showed significant correlations with nutrient intakes, but it seems that the hair mineral content is not directly influenced by each mineral intake. As described above, some hair mineral levels in female adults deviated from the normal range, and it is considered that nutritional intervention to control the imbalance of mineral nutrition is required. Also, as some correlations were shown between hair mineral levels and age, BMI, and nutrient intakes, the possibility of utilizing hair mineral analysis for specific purposes in the future is suggested.

• 한국지구물리탐사학회:학술대회논문집
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• 2003.11a
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• pp.470-475
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• 2003

KIGAM (Korea Institute of Geoscience and Mineral Resources) launched a new project to develop the low-enthalpy geothermal water in the area showing high geothermal anomaly, north of Pohang city, for large-scale space heating from KORP (Korea Research Council of Public Science & Technology) funding. Surface geologic and geophysical surveys including Landsat TM image analysis, gravity, magnetic, Magnetotelluric (MT) and controlled-source audio-frequency MT (CSAMT) and self-potential (SP) methods have been conducted and the possible fracture zone was found that would serve as deeply connected geothermal water conduit. By the end of 2003, two test wells of 1 km depth will be drilled and various kinds of borehole survey along with additional MT measurements and sample analysis will follow and then the detailed subsurface condition is to be characterized. Next step would be drilling the production well of 2 km depth and all further steps remain to be determined depending upon the results of the test well studies.

• Geophysics and Geophysical Exploration
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• v.17 no.4
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• pp.209-215
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• 2014

In order to develop a new mineral exploration technique, a study was carried out about the potential mapping of Moisan area using SIP (Spectral Induced Polarization) data. The SIP inversion results were classified according to the geological regions, and the distribution characteristics of resistivity and phase values of SIP data were analyzed at the ore region. Based on the characteristics of SIP of ore bodies, we performed 3D potential mapping of Moisan area. The analyzed potential map was verified using that the locations and patterns of high potential regions of the results are well matched with those of the known ore bodies. If we get the higher spatial resolution SIP data, the potential mapping technique using SIP data can be effectively applied to the estimation of mining deposit.

• Journal of Nutrition and Health
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• v.27 no.3
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• pp.236-252
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• 1994

This survey was accomplished to investigate the patterns of vitamin/mineral supplements usage in the middle-aged. Eight hundred seventy two persons of middle age were chosen from various cities and rural communities in Korea. In this study, those factors affecting vitamin/mineral supplements consumption, and usage patterns were examined. In addition, vitamin and mineral intakes through supplements were calculated, and then compared with RDA. As a result, vitamin/mineral supplements were taken by 40.8% of subjects. The higher the age, education level, family income and socioeconomic status were, the higher the percentage of supplements consumption was. City-dewellers used them more often than rural-dewellers. And vitamin/mineral supplements were taken frequently in subjects who perceived their health as poor, and concerned much about health. Illness and climacteric symptoms were also related with elevated usage. However, nutritional knowledge and food habit did not affect supplements consumption. Users mostly received information about supplements from TV/radio/newspapers, of family/friends. One of the mainly cited reasons for taking supplements, next to ' to give energy', was 'to be healthier'. The four most favored supplements, in ranking order, were vitamin B-complex, vitamin E, vitamin A and Ca. Most vitamin and mineral intakes through supplements were much greater than RDA except Ca. Especially, vitamin B1 intake was the highest as 49.6$\pm$34.9 times of RDA. In conclusion, vitamin/mineral supplements used by the middle-aged in Korea was as high as those of western countries. Supplements consumption seemed to be related with affluence, poor health status, and high level of health consiousness. And supplements tended to be taken for health promotion irrespective of scientific background. Most vitamin and mineral intakes by supplements were exceeded RDA, and their intake ranges were very wide. Thus some subjects should give attention to the potential harms of megadose.

• Journal of the Korean Ceramic Society
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• v.53 no.1
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• pp.63-67
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• 2016

Mineral hydrate is a new insulation material that compensates for the defects of existing materials. Mineral hydrate is made of inorganic ingredients; therefore, it is nonflammable. The porous structure of mineral hydrate makes the material lightweight and insulating. Mineral hydrate insulation and similar products have been studied and manufactured in Korea and abroad. However, these insulation materials need to improve in terms of strength. In this study, basalt fiber was used to enhance the strength. In order to observe the property changes, compressive strength, heat conductivity, and specific gravity were measured and XRD pattern analysis was performed. These tests confirmed that basalt fiber was effective at improving the strength and lowering the heat conductivity of mineral hydrate insulation.

• Korean Journal of Pharmacognosy
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• v.4 no.3
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• pp.105-152
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• 1973

Modern pharmaceutical scientists and medicinal chemists have shown only sporadic interest in mineral drugs of oriental medicine, although the use of minerals in medicine dates from early ancient cultures. The mineral, until recently, has been relatively neglected by the natural product and medicinal chemists. At this moment in time it is appropriate to review briefly the status of mineral oriental drugs in Korea, and eighty items of mineral drugs were listed in this review. This review is also concerned with those references, classic or current, pertaining to application, origin, and constituent of those mineral drugs. It is the aim of this review to facilitate presentation of useful informations in an attempt to entice the natural product and medicinal chemists to seek rediscovery and further application of mineral oriental drugs in Korea.

• Environmental Engineering Research
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• v.20 no.3
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• pp.285-289
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• 2015

Complicated and expensive seawater desalination technology is a big challenge in boron removal process. Conventional seawater desalination process of coagulation utilized for pre-treatment is difficult to remove boron. Boron can be removed more effectively in Reverse Osmosis (RO) process than any other processes. In this study, a coagulant with the name Mineral Cluster was examined its boron removal ability. Boron removal efficiency of Mineral Cluster depended on pH value and Mineral Cluster dosage. Desalination process combines the pre-treatment process with Mineral cluster diluted at the ratio of 1:2500 and the RO membrane process. The original sea water could be desalinated to drinking water quality, 1 mg/L, without any pH adjustments. Therefore, if the Mineral cluster is added without any other chemicals for adjusting pH, the desalination process would be much safer, efficient and economical.

• Mineral and Industry
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• v.23
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• pp.26-31
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• 2010

희토류 정광으로부터 첨단산업 원료소재로 수요가 급증하고 있는 고순도 희토류 소재를 제조하기 위한 가장 첫 공정은 침출공정이다. 즉, 희토류 정광으로부터 원소별 희토류 성분을 분리하기 위해서는 용액상태로 전환이 필요한데, 이때 일반적인 산 및 알카리 용액에는 희토류 성분은 침출이 되지 않으므로 강산 또는 강 알카리 조건에서 희토류 정광을 침출 가능한 형태로 변환 시켜주는 분해공정이 선행되며 이후 산 침출에 의해 희토류 성분을 침출하게 된다. 본 고에서는 대표적인 희토류 광물인 모나자이트와 바스트나사이트, 그리고 이 광물의 혼합물 형태로 생산되는 혼합광물에 대한 분해 및 침출공정을 소개하고자 한다.