• Proceedings of the Korean Nutrition Society Conference
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• 1996.06b
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• pp.53-53
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• 1996

• Proceedings of the Korean Nutrition Society Conference
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• 1995.05c
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• pp.27-27
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• 1995

• Resources Recycling
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• v.3 no.2
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• pp.9-16
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• 1994

In this study, the grinding and wet cyclone process of the dust for the effective separation of high purity iron powder and iron oxide were investigated. The results obtained in this study can be summarized as follows: 1. By applying the wet cyclone technique for the iron powder(+200 mesh) produced from EC dust of the Kwangyang 2nd steel making factory, the iron powder of high content more than 99.76% of Fe was obtained with 47.66% yield at grinding time of 5 minutes by attritor. 2. The particle size distribution of the iron powder recovered from converter dust is quite simillar with the iron powder of sweden Hoganas Co.(W40.24, W40.29, W40.37, W40.37OX). 3. By using iron powder, copper ions are all adsorbed and removed in any concentration ranges of copper sulfate solution(Cu:100, 200, 300, 600 ppm).

• Clinical and Experimental Pediatrics
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• v.49 no.2
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• pp.144-149
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• 2006

Purpose : This study investigated the breast-feeding period, the milk bottle-using period, the age of cow's milk, introduced and the amount of cow's milk consumed in relation to anemia. Methods : Over the course of three years, 930 children(12 months to 36 months) who went to the Presbyterian Medical Center, Chonju, Korea were tested for anemia and their parents were surveyed for a history of their children's milk consumption. Results : Anemia appeared more likely between 30 months and 36 months, however, iron-deficiency anemia appeared more likely between 18 months and 23 months. Anemia, low serum ferritin levels and iron-deficiency anemia appeared more likely in children breast fed less than 6 months and greater than 12 months. Although there were survey reports of side effects with cow's milk, including constipation, diarrhea and skin rash, the milk bottle-using period, age of cow's milk introduced and amount of cow's milk consumed had no connection with anemia, serum ferritin levels and irondeficiency anemia. Conclusion : The data showed no correlation between the cow's milk, milk bottle-using period and iron deficiency. But the data revealed that iron deficiency anemia is more likely in children who are breast fed for less than 6 months and over 12 months, so we suggest careful attention during this period to prevent iron deficiency anemia.

• Applied Chemistry for Engineering
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• v.8 no.4
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• pp.595-601
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• 1997

The regeneration of the iron powders in the treatment of $FeCl_3$ etching solution containing nickel by ball-mill and ultrasonic treatments has been studied. When the unreacted iron powders were treated twice, the removal efficiency of nickel was 94.0% for the ball-mill treatment and 82.1% for the ultrasonic treatment. But the removal efficiency of nickel was 40.0% for the untreated iron powders. As the treatment time was increased, the particle size of iron powders was decreased for ball-mill treatment and almost not changed for ultrasonic treatment.

• Journal of the Korean Society of Food Science and Nutrition
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• v.40 no.12
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• pp.1720-1725
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• 2011

Aspartic acid chelated iron (Asp-Fe) was synthesized by a new method using calcium carbonate, aspartic acid, and ferrous sulfate. This study was carried out to investigate the bioavailability of Asp-Fe in iron-deficient rats. We divided the rats into four experimental groups. The first was the normal diet control group, or NC. The second was the no treated control group of iron-deficient (ID) rats, or ID+C. The third was the heme-iron (heme-Fe) treated group of ID rats, ID+heme-Fe. And the fourth was the Asp-Fe treated group of ID rats, or ID+Asp-Fe. There were no differences among any of the experimental groups in diet consumption, change of body weight, or the weight of the livers, kidneys, or spleens. After 7 days of feeding, the iron content in the sera of the ID+Asp-Fe group (175.2 ${\mu}g$/dL) and the ID+heme-Fe group (140.8 ${\mu}g$/dL) were significantly higher than that of the ID-C group (96.1 ${\mu}g$/dL). The total iron binding capacity (TIBC) of the ID+Asp-Fe group (735.4 ${\mu}g$/dL) was significantly normalized compared to the ID+C group (841.9 ${\mu}g$/dL) or ID+heme-Fe group (824.6 ${\mu}g$/dL). The hematocrit level of the ID+Asp-Fe group was increased to normal levels, but there was no statistical difference among ID groups. The absorption ratio of heme-Fe was 21.3% and that of Asp-Fe was 50.2%, which indicates a 2.3 times higher ratio in comparison with heme iron. With the above results we found that Asp-Fe seems to be an efficient form of iron to supply iron deficient rats in order to cure them of anemia. Thus, these findings suggest that aspartic acid chelated iron has the potential to serve as a functional food related to iron metabolism.

• Proceedings of the Korean Nutrition Society Conference
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• 2000.11a
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• pp.56-56
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• 2000

본 연구는 철분결핍과 caffeine섭취가 흰쥐의 혈당과 과산화에 미치는 영향을 알아보기 위해서 수행되었다. 생후 2주된 48마리의 Sprague-Dawley 수컷 흰쥐를 철분과 caffeine의 첨가 수준에 따라 6군으로 나누어 4주간 사육하였다(C0F0 : caffeine 0%, Fe 5 ppm diet, C1F0 : caffeine 1%, Fe 5 ppm diet, C4F0 : caffeine 4%, Fe 5 ppm diet, C0F1 : caffeine 0%, Fe 50 ppm diet, C1F1 : caffeine 0%, Fe 50 ppm diet, C4F1 : caffeine 0%, Fe 50 ppm diet).(중략)

• Proceedings of the KSCN Conference
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• 2002.11a
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• pp.957-958
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• 2002

• Journal of the Korean Crystal Growth and Crystal Technology
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• v.24 no.2
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• pp.77-83
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• 2014

The purpose of this study was to figure out the impacts of iron oxide types and dosages to bloating when producing artificial lightweight aggregates by utilization of recycled resources such as bottom-ash, reject-ash and dredgedsoil. In order to figure out chemical characteristics of raw materials, XRD and XRF analyses were performed. 50 wt% of dredged-soil, 15 wt% of bottom-ash and 35wt.% of reject-ash were mixed, then the amount of iron oxide was varied at 5 to 30 wt% with intervals of 5 wt% with $Fe_2O_3$ and $Fe_3O_4$ respectively. As molded aggregates were sintered by rapid sintering in intervals of $40^{\circ}C$ from $1060^{\circ}C$ to $1180^{\circ}C$, specific gravity and water absorption were measured. As a result, the artificial lightweight aggregate with iron oxide of 10~15 vol% showed the lowest specific gravity, and it was identified that the more iron oxide vol% increases, the more specific gravity increases because of liquid phase sintering.

• Journal of Korean Society of Environmental Engineers
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• v.22 no.1
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• pp.73-81
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• 2000

The removal of ferrous iron (Fe(II)) in groundwater is generally achieved by simple aeration or the addition of oxidizing agent. Aeration followed by solid-liquid separation is the most commonly used as physico-chemical treatment method for iron removal. In general aeration has been shown to be very efficient in insolubilizing ferrous iron at the pH level greater than 6.5. In this study pH was maintained over 6.5 using limestone granules under constant aeration to oxidize ferrous iron. In batch experiments, oxidation rate of ferrous iron was investigated under different conditions including limestone granule size. initial concentration of the ferrous iron, pH, temperature and ionic strength in groundwater. The pH in groundwater was presumed as the most important factor determining oxidation rate of ferrous iron. According as the size of the limestone granules decreased, the pH of the iron contaminated water increased quickly and oxidation of the ferrous iron was achieved immediately too. The oxidation rate of the ferrous iron was found to be proportion to initial concentration of the iron contaminated water, temperature and ionic strength, respectively.