• Journal of the Korean Crystal Growth and Crystal Technology
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• v.13 no.5
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• pp.254-259
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• 2003

In the fabrication process of transparent conducting thin films of the ATO (antimony-doped tin oxide) on a soda lime glass substrate by a sol-gel dip coating method, the effects of the $SiO_2$ buffer layer formed on the substrate and $N_2$ annealing treatment were investigated by XPS (X-ray photoelectron spectroscopy) analysis. Optical transmittance and electrical resistivity of the 400 nm-thick ATO thin films which were deposited on $SiO_2$ buffer layer/soda lime glass and then annealed under nitrogen atmosphere were 84 % and $5.0\times 10^{-3}\Omega \textrm{cm}$ respectively. The XPS analysis confirmed that a $SiO_2$ buffer layer inhibited Na ion diffusion from the substrate, resulting in prohibiting the formation of a secondary phase such as $Na_2SnO_3$ and SnO and increasing Sb ion concentration and ratio of $Sb^{5+}/Sb^{3+}$ in the film. And it was also found that $N_2$ annealing treatment leads to the reduction of $Sn^{4+}$as well as $Sb^{5+}$ however the reduction of $Sn^{4+}$ is more effective and therefore consequently results in decrease in the electrical resistivity to produce an excellent electrical properties of the film.

• The Korean Journal of Pesticide Science
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• v.18 no.4
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• pp.404-408
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• 2014

Three type of Lime Bordeaux mixture (LBM) that has been used since 1800's for control plant disease are used for eco-friendly ginseng (Panax ginseng) disease control. But it was restricted the use in the crops cultivation in some countries of Europe recently, because there is a possibility that the copper component is concentrated in the soil and plants with using LBM containing copper. According to the concentration and number of LBM spraying treatment, it was investigated copper and other components in soil and ginseng root. In case of LBM sprayed 33 times for three years, copper concentration was increased up to 75.9 ppm in the soil. However copper concentration of ginseng root was increased with 9.9~23.0 mg/kg in comparison with 8.38~11.39 mg/kg at LBM non-treatment. It has shown that the copper components can be concentrated to in the soil if used continuously in the long term.

• Korean Journal of Soil Science and Fertilizer
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• v.4 no.2
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• pp.143-147
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• 1971

Field experiments were carried out to determine the effect of B on rape with application of lime and compost in sandy upland soil and in clayey paddy soil. The plant samples from each treatment at flowering stage were analyzed to interpret the yield response. The effect of B was very significant in both soils, but more marked in sandy upland soil. The application of 20kg/ha borax appears to increase upto the possible level that can be achieved by B application. Application of 40kg/ha borax did not give any further additional response. In acidic paddy soil (pH 5.4), the effect of B was fully exhibited only with liming. Liming neither intensified the B deficiency nor reduced the B content in the plant tissue, but rather promoted the growth of rape plant. There was highly significant negative correlation between Ca/B ratio and seed yield ($r=-0.74^{**}$), but it was very difficult to draw a line between normal and deficient Ca/B ratio. It is very interesting that boron application significantly increased the Ca uptake in no lime treatment. Application of compost was generally inffective and did not affect the B supply to the plant. However, it appears to increase K uptake slightly and give a little favorable effect on growth of plant.

• Clean Technology
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• v.3 no.2
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• pp.31-33
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• 1997

Nitrate contamination in surface water and ground water have increased in Korea. This trend has raised concern because nitrates caused methemoglobinemia in infants. To remove nitrates from waters, various purification processes including ion-exchange, biological denitrification, and chemical denitrification are currently in use for the treatment of water. However, little economically advantageous process exists for the industrial scale treatment of effluents highly polluted with nitrates. A new process has been developed for nitrate and other salts removal from polluted waters. Alumina cement and lime served as precipitating agents to remove nitrate with stirring at basic pH. Decreasing alumina content in alumina cement result in a increasing in nitrate removal yield. Stable removal of nitrate(1000mg/L) was readily achieved by two-stage removal process.

• Journal of the Korean institute of surface engineering
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• v.33 no.2
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• pp.87-92
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• 2000

Transparent and electrical conducting tin oxide thin films were fabricated on soda lime silicate glass by thermal chemical vapour deposition technique. Thin films were deposition from mixtures of tetramethyltin (TMT) as a precursor, oxygen or oxygen containing ozone as an oxidant and 1,1,1,2-tetrafluoroethane as a doping material. Electrical properties of fabricated tin oxide films were changed depending on substrate temperature, and the amount of dopant. Resistivity of tin oxide films was reduced by doping fluorine or heat treatment. Thin films can be optimized at TMT flow rate of 8sccm, oxygen flow rate of 150sccm, 1,1,1,2-tetrafluoroethane floe rate of 300sccm and substrate temperature $380^{\circ}C$. In this conditions, the lowest resistivity of tin oxide films were $9$\times$10^{-4}$ $\Omega$cm.

• Mycobiology
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• v.40 no.3
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• pp.168-172
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• 2012

In this study, the effect of soil ameliorators on ectomycorrhizal (ECM) fungal communities in coal mine spoils was investigated. Organic fertilizers and slaked lime were applied as soil ameliorators in 3 abandoned coal mine spoils. One year after the initial treatment, roots of Pinus densiflora seedlings were collected and the number of ECM species, colonization rate, and species diversity were assessed. The results showed that the soil ameliorators significantly increased ECM colonization on the roots of P. densiflora. The results suggest that soil ameliorators can have a positive effect on ECM fungi in terms of growth of host plants and show the potential use of soil ameliorator treatment for revegetation with ECM-colonized pine seedlings in the coal mine spoils.

• Journal of Energy Engineering
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• v.27 no.1
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• pp.51-58
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• 2018

In this paper, we reported that the influence of advanced functional mineral filler calcium carbonate ($CaCO_3$) extracted from oyster shell waste, which are rich mineral sources of $CaCO_3$. Oyster Shells, available in abundance, have no eminent use and are commonly regarded as waste. Their improper disposal causes a significant level of environmental concern and also results in a waste of natural resources. Recycling shell waste could potentially eliminate the disposal problem, and also turn an otherwise useless waste into high value added products. Oyster shell waste calcination process to produce pure lime (CaO) which have good anti-microbial property for waste water treatment and then focuses on its current applications to treat the coffee waste and its effluents for biological treatment and utilization as a fertilizers.

• Magazine of the Korean Society of Agricultural Engineers
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• v.39 no.5
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• pp.64-70
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• 1997

Sludge is generated in the process of water and wastewater treatment, and it has been causing various problems environmentally and economically. The firing technology in pottery industry was applied to the sludge treatment, and the final product was called artificial soil. For the production of artificial soil, lime and chabazite was used as additive, and the mixed material was thermally treated in the firing kiln at $300^{\circ}$ temperature for about 15 minutes. The physico-chemical characteristics of the artificial soil was analyzed and it showed that the artificial soil could be used as a soil conditioner for farmland. The concentrations of the toxic heavy metals in the artificial soil were lower than those in the soil quality standard for farmland. It was high in permeability, total nitrogen and total phosphorous concentrations and surface area of the artificial soil compared to the common field soil. Preliminary cost analysis showed that the sludge treatment cost for artificial soil was less than the disposal cost in the current landfill disposal method. This study illustrated that the artificial soil production process can be a feasible alternative for sludge treatment, and produced artificial soil may he applied to farmland without causing significant adverse effect. Further study is recommended for practical application of the system and verification of the longterm effect of the artificial soil on farmland.

• Journal of the Korean institute of surface engineering
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• v.46 no.1
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• pp.16-21
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• 2013

CIGS (Cu-In-Ga-Se) films were deposited on the Mo coated soda lime glass (Mo/SLG) by RF magnetron sputtering using a single sintered target with different chemical compositions. Heat treatment of the CIGS films were carried out under three different conditions, 1step ($350^{\circ}C$ for 2 hour and $550^{\circ}C$ for 2 hour) and 2step ($350^{\circ}C$ for 1 hour and $550^{\circ}C$ for 1 hour). In the case of CIGS films post-annealed on 2step method, grain size remarkably increased compared to other methods, indicating that chemical composition [Cu/(Ga+In) = 1] of CIGS films was same as CIGS target. After heat treatment by 2step method, band gap energy of the CIGS film deposited at RF 80 W showed 1.4 eV which is broadly similar to identical band gap energy (1.2 eV) of CIGS film prepared by evaporation method. Therefore, 2step heat treatment method could be expected to low temperature process.

• The Journal of Korea CHUNA Manual Medicine
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• v.1 no.1
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• pp.67-82
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• 2000

To clarify the effect of chuna treatment reached at neck pain, the faculties of Oriental Rehabilitation Medicine in Hospital of Oriental Medicine, Kyung Hee Medical Center had carried out chuna treatment for 72 patients who had neither structural defectiveness of cervical spine nor neural injury but simple soft tissue damage among people who visited the hospital with the neck pain since Jun. 11, 1997 to Dec. 31 in the year. The way of study: 32 out of 72 patients were treated by acupuncture treatment going with chuna treatment (calling 'Group A') and the other 40 patients were cured by only acupuncture (calling 'Group B'). The treatment in both Group A and B were performed 6 times totally at intervals of a time for 2 days. To judge the effect of treatment, both method-visual analog scale(VAS) and ,check of ROM-were performed each time. The results of study 1. Each one in Group A itself, according to the number of the treatment in progress, showed the note worthy decrease of pain and improvement of range of motion(ROM) in the cervical(P <0.001). 2. Each one in Group B itself, according to the number of the treatment in progress, showed the note worthy decrease of pain and improvement of range of motion(ROM) in the cervical(P <0.001). 3. In the degree of improvement in pain, the Group A who had been treated by both acupuncture and chuna treatment at the same lime showed some meaningful decrease in pain compared to the Group B with acupuncture treatment alone(P <0.001). 4. In the degree of improvement in ROM, the Group A who were treated by both chuna and acupuncture treatment had meaningful improvement compared to Group B who got the only acupuncture treatment(P <0.001).