• Proceedings of the Korean Magnestics Society Conference
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• 2012.05a
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• pp.38-39
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• 2012

• Journal of Environmental Science International
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• v.18 no.7
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• pp.811-817
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• 2009

To determine changes in nitrogen contents and optimal rates as N fertilizer, we investigated nitrogen characteristics in the slurry in the respond to the application of 0, 0.5, and 1 g of ferrous sulfate or alum /25g of dairy slurry. Additions of ferrous sulfate or alum increase total nitrogen, inorganic nitrogen, available nitrogen, and predicted available nitrogen contents in dairy slurry, resulting in reduction in pH. The best results were found in the treatment with 0.5 g of ferrous sulfate or alum /25 g of dairy slurry. In conclusion, the use of ferrous sulfate or alum as on-farm amendment to dairy slurry should be represented an alternative to improve N in dairy slurry.

• Journal of the Korean Society for Precision Engineering
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• v.20 no.1
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• pp.63-69
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• 2003

This study proposes the construction of attractor simulator for cutting characteristics evaluation of non-ferrous metals. Also this paper aims to find the optimal cutting conditions of diamond turning machine by measuring surface form and roughness to perform the cutting experiment of non-ferrous metals, which are aluminum, with diamond tool. As well, according to change cutting conditions such as feed rate, cutting force and surface roughness are measured by tool dynamometer. Trajectory changes in the attractor indicated a substantial difference in fractal characteristics. Constructed attractor in this study can be used for cutting characteristics evaluation of non-ferrous metals

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.2 no.1
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• pp.39-44
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• 2003

In the present industry, there are necessary to cut not only iron metals but also non-ferrous metals such as aluminum, brass, plastic and wood(Paulownia) therefore it had been made the studies of non-ferrous metals by many scientists. The purpose of this study is to conduct the basic experiment about influencing of the feedrate adjustment and the change of the side rake angle at turning of non-ferrous metals. As the results, the surface roughnesses and Cutting force adjustments were on the decrease with a side-rake angle and feedrate diminution in the case of the plastic, brass, aluminum, and paulownia.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1997.10a
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• pp.929-934
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• 1997

In the present industry, there are necessary to cut not only iron metals but also non-ferrous metals such as aluminum, brass, plastic and wood(Paulownia).therefore it had been made the studies of non-ferrous metals by many scientists. we hope this kind of study will continue. The purpose of this study is to conduct the basic experiment about influencing of the feedrate adjustment and the change of the side rake angle at turning of non-ferrous metals. As the results, the surface roughnesses and Cutting force adjustments were on the decrease with a side-rake angle and feedrate diminution in the case of the plastic, brass, aluminum, and paulownia

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2003.11b
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• pp.319-321
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• 2003

This research was carried out to evaluate the removal efficiencies of CODcr and colour for the dyeing wastewater by ferrous solution in Fenton process. The results showed that COD was mainly removed by Fenton coagulation, where the ferric ions are formed in the initial step of Fenton reaction. On the other hand colour was removed by Fenton oxidation rather than Fenton coagulation. The removal mechanism of CODcr and colour was mainly coagulation by ferrous ion, ferric ion and Fenton oxidation. The removal efficiencies were dependent on the ferric ion amount at the beginning of the reaction. However the final removal efficiency of COD and colour was in the order of Fenton oxidation, ferric ion coagulation and ferrous ion coagulation. The reason of the highest removal efficiency by Fenton oxidation can be explained by the chain reactions with ferrous solution, ferric ion and hydrogen peroxide.

• Journal of Environmental Science International
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• v.27 no.2
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• pp.143-146
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• 2018

This study was conducted to evaluate the effect of chemical blend additives (a combination of ferrous sulfate and aluminum chloride) on decreasing pathogens in poultry litter. A total of 240 broiler chickens were assigned to 4 chemical treatments with 4 replicates of 15 chickens per pen. The four chemical blend additives were a control (no treatment), 25 g ferrous sulfate + 75 g aluminum chloride/kg poultry litter, 50 g ferrous sulfate + 100 g aluminum chloride/kg poultry litter and 100 g ferrous sulfate + 150 aluminum chloride/kg poultry litter. During the 6-wk experimental period, there were significant differences in both E.coli and Salmonella enterica for weeks 4 through 6, but not at weeks 1 and 3, respectively. Consequently, using chemical blend additives that serve as methods to control strict environmental regulations reduced pathogens in poultry litter.

• Transactions of the Korean Society of Machine Tool Engineers
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• v.10 no.5
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• pp.124-129
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• 2001

The experimental study was the cutting characteristics of non-ferrous metals. The experimental apparatus was used the turning machine and diamond tool. This aimed at lading the optimal cutting conditions by measuring surface farm and roughness. Used non-ferrous metals were aluminum, brass and oxygen-free copper. As well, according to changing cutting conditions such as feed rate by measuring cutting farce and surface roughness and according to cutting conditions the non-ferrous metals studied about cutting properties.

• Journal of the Korean Society of Safety
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• v.18 no.3
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• pp.22-28
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• 2003

This study proposes the construction of chaos simulator for cutting characteristics evaluation of non-ferrous metals. Also this paper aims to find the optimal cutting conditions of diamond turning machine by measuring surface form and roughness to perform the cutting experiment of non-ferrous metals, which are aluminum, with diamond tool. As well, according to change cutting conditions such as fled rate, using diamond turning machine to perform cutting processing, by measuring cutting force and surface roughness and according to cutting conditions the aluminum about cutting properties. Trajectory changes in the attractor indicated a substantial difference in fractal characteristics. Constructed chaos simulator in this study can be used for cutting characteristics evaluation of non-ferrous metals.

• Resources Recycling
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• v.18 no.1
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• pp.52-57
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• 2009

Since there are many kinds of non-ferrous metal, it is difficult to investigate the current status on the recycling of non-ferrous metals. Therefore, the survey is confined to some commercially important non-ferrous metals such as copper, lead, zinc, aluminum, nickel and magnesium in this article. Domestic demand and production in recent years and current status on the recycling of the scraps of these non-ferrous metals are introduced briefly here.