• Korean Journal of Poultry Science
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• v.45 no.3
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• pp.193-200
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• 2018

The purpose of this study was to evaluate the influence and safety of spraying Farm Clean-S (FC-S) containing 70% Chamaecyparis obtusa essential oil on the elimination of red mite in laying hens. In total, 300 laying hens (ISA brown) aged 72 weeks and infected with red mite were assigned to individual cages for five treatments with five replicates for 18 days. Treatments consisted of distilled water (negative control; NC), commercial spray product (positive control; PC), FC-S 0 (original concentration), FC-S 50 (50 times diluted) and FC-S 100 (100 times diluted). The number of red mites, egg production and weight of each group were evaluated daily throughout the whole experimental period. Egg quality and blood biochemical parameters were measured at the end of the experiment. Safety tests were confirmed by feed intake, respiration, lethargy, diarrhea and mortality symptoms after the feeding trial. As the result, more than 80% of red mites were eliminated by the FC-S 0 spray treatment, and FC-S 50 also showed a higher elimination percentage than did PC (P<0.01). However, the elimination effect of the FC-S 100 spray was lower than that of the PC, but higher than that of the NC (P<0.01). These results confirmed that the optimum FC-S dilution rate ranged from 0~50 times with distilled water to eliminate the red mite effectively. The performance, egg quality, blood parameter and safety tests were not significantly different among treatments. Thus, FC-S 0 and FC-S 50 spray treatments can effectively and sustainably control red mite infestations without detrimental effects on the performance, egg quality and plasma biochemical properties of laying hens.

• Asian-Australasian Journal of Animal Sciences
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• v.14 no.9
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• pp.1290-1298
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• 2001

A total of 371 weaned pigs were used in three experiments to evaluate the effects of spray dried plasma (SDP), soybean protein sources, and lactose on growth performance. In Exp. 1, 128 pigs (5.99 kg, $18{\pm}2d$) were used to evaluate the effect of SDP (0 vs 7%), lactose (0 vs 30%), and two soybean protein sources [soybean meal (SBM) and extruded soybean protein concentrate (ESPC)] in phase I (d 0 to 14) diets on pig performance in a $2{\times}2{\times}2$ factorial arrangement. Spray-dried plasma increased phase I ADG (p<0.01) and ADFI (p<0.05) in the SBM diets, but not in the ESPC diets. Lactose improved ADG and gain/feed ratio (G/F) in phase I (p<0.01). In Exp. 2, 144 pigs (5.50 kg, $17{\pm}3d$) were used to evaluate the effect of SDP (0 vs. 3.5%) and three soybean protein sources [SBM, ESPC, and soybean protein concentrate (SPC)] in phase I diets, and the effects of two different phase II (d 14 to 28) diets (simple vs complex) in a $2{\times}3{\times}2$ factorial arrangement of treatments. In phase I, SDP increased ADG (p<0.01) and improved G/F (p<0.05). Pigs fed SBM had the highest ADG and ADFI, with a G/F similar to the pigs fed ESPC. In phase II, pigs fed the complex diet had improved ADG (p<0.01), ADFI (p<0.05), and G/F (p<0.05) compared to the simple diet. In Exp. 3, 99 weaned pigs (5.77 kg, $17{\pm}3$d) were used to evaluate the effect of SBM, ESPC, and ESPC with SDP in the phase I diets. Pigs fed SBM with no blood product in the diet had the lowest ADG (p<0.01), ADFI (p<0.01), and G/F (p<0.05) in the first week of phase I. There were no differences in soybean protein sources fed in phase I diets on overall pig performance. These experiments are indicated that SDP and lactose improve the phase I performance. Soybean meal can be used as the major protein source in phase I diets with SDP.

• Korean Chemical Engineering Research
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• v.40 no.6
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• pp.752-756
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• 2002

Green-emitting $Zn_2SiO_4:Mn$ phosphors for PDP(Plasma Display Panel) application were synthesized by colloidal seed-assisted spray pyrolysis process. The codoping with $Gd^{3+}/Li^+$, which replaces $Si^{4+}$ site in the willemite structure, was performed to improve the luminous properties of the $Zn_2SiO_4:Mn$ phosphors. The particles prepared by spray pyrolysis process using fumed silica colloidal solution had a spherical shape, small particle size, narrow size distribution, and non-aggregation characteristics. The $Gd^{3+}/Li^+$ codoping amount affected the luminous characteristics of $Zn_2SiO_4:Mn$ phosphors. The codoping with proper amounts of $Gd^{3+}/Li^+$ improved both the photoluminescence efficiency and decay time of $Zn_2SiO_4:Mn$ phosphor particles. In spray pyrolysis, the post-treatment temperature is another factor controlling the luminous performance of $Zn_2SiO_4:Mn$ phosphors. The $Zn_{1.9}SiO_4:Mn_{0.1}$ phosphor particles containing 0.1 mol% $Gd^{3+}/Li^+$ co-dopant had a 5% higher PL intensity than the commercial product and 5.7 ms decay time after post-treatment at $1,145^{\circ}C$.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.9 no.2
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• pp.134-143
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• 1997

A theoretical and experimental study has been performed to investigate the characteristics of ice-slurry product. By diffusion-controlled model, the possibility of ice slurry has been theoretically anticipated. The water vapor evaporated from the surface of droplets is extracted continuously from the chamber by a vacuum pump. The droplet diameter was measured by silion immersed method. The ice slurry has been obtained by spraying droplets of ethylene-glycol aqueous solution in the chamber where pressure is maintained under the triple point of water. The droplet of which the diameter is $300{\mu}m$, and the initial temperature is $20^{\circ}C$, was changed into ice particle within the chamber of which the height is 1.33m.

• Carbon letters
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• v.12 no.2
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• pp.102-106
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• 2011

Carbon nanotubes (CNTs) have been synthesized by ferrocene-catalyzed pyrolysis of toluene. The influences of the experimental conditions on the morphology and microstructure of the product have been analyzed. To find the proper temperature for synthesis of CNTs, the experiment was performed in a temperature range from 800 to $1100^{\circ}C$. From content variation of ferrocene and thiophene as the catalyst, morphological change of carbon nanotubes has been observed. Also, the influence of the gas ratio of hydrogen and argon on the nanotube samples was analyzed by scanning electron microscopy and transmission electron microscopy.

• Proceedings of the Korea Concrete Institute Conference
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• 2006.05b
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• pp.305-308
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• 2006

This paper is to investigate the strength, impact endurance and shrinkage of wet spraying type fiber composite mortar for repair material depending on fiber type and product kinds. Fiber composite mortar containing PVA fiber had the highest strength compared to that using any other fiber. Especially, The use of PVA fiber results in a remarkable enhancement in impact strength and an improved volumetric stability. Accordingly, it is confirmed that fiber composite mortar containing PVA fiber has remarkable performance as repair material of damaged section of concrete.

• Journal of Ginseng Research
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• v.11 no.1
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• pp.66-76
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• 1987

When rice seeds were rinsed in If) Korean ginseng tea (KG 722, Korean Ginseng Product Co. Ltd. made) for 28 hours prior to seeding, the early growth was found relatively fast and their resistance against blight and harmful insects was increased. Rice yield showed that control group, rinsing group and spraying group were 514 kg/10a, 562 kg/ 10a and 571 kg/ 10a respectively. However, rinsing and spraying groups were 590 kg/ 10a (leaf spraying) and 605 kg/ 10a (spray immediate after seeding) respectively.

• Fashion & Textile Research Journal
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• v.11 no.2
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• pp.242-251
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• 2009

Traditional patterns of Korea vary greatly and have excellent value in terms of artistic merit. Nevertheless because there are not enough the research and development of them, traditional patterns of Korea are not yet recognized in internationally aesthetic value. Therefore the development of designs modernizing traditional patterns of Korea is urgently needed. In this study, I chose Four gracious plants as the subject materials of textile design development. Before everything I examined data of Four gracious plants expressed on Blue and white porcelain. And I chose data that are suitable to express modern image among them. I set my face to develop the textile design of Korean images by adding modern scenes with them. Also, I were trying to make fashion products like muffler and tie by using techniques such as burn out, crayon dying and spray dyeing.

• Journal of the Korean Society of Safety
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• v.33 no.6
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• pp.8-14
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• 2018

Recently, serious problems occurred such as insecticide eggs, sanitary pads with carcinogens, radon(Rn) emitting beds in domestic. It had not been establishing the inspection system to evaluate safety and human harmfulness before occurring real accidents. This research was conducted to test preliminary experimental inspection for consideration of safety insensibility. The influence of corrosion of metals and plants was studied through aerosol type spraying of agricultural pesticide products coming into the market. These products contain primary three insecticide ingredients(Flufenoxuron, Etoxazole, Fipronil) in recent accidents. Visual examination, SEM-EDS and optical microscope were used for the analysis for corrosion effect. Results show that a lot of ingredients contain in the crop protection products, and various type of corrosion exist in the surface of metals and plants. Therefore, it is necessary to provide health warning and accurate range of use for crop protection products containing insecticide ingredients.

• Corrosion Science and Technology
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• v.14 no.5
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• pp.213-217
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• 2015

Recently, household electronic industries require environmentally-friendly and highly functional steels in order to enhance the quality of human life. Customers especially require both excellent corrosion and abrasion resistant anti-fingerprint steels for digital TV panels. Thus POSCO has developed new functional electro-galvanized steels, which have double coated layers with organic-inorganic composites on the zinc surface of the steel for usage as the bottom chassis panel of TVs. The inorganic solution for the bottom layer consists of inorganic phosphate, magnesium, and zirconium compounds with a small amount of epoxy binder, and affords both improved adhesion properties by chemical conversion reactions and corrosion resistance due to a self-healing effect. The composite solution for the top layer was prepared by fine dispersion of organic-inorganic ingredients that consist of a urethane modified polyacrylate polymer, hardener, silica sol and a titanium complex inhibitor in aqueous media. Both composite solutions were coated on the steel surface by using a roll coater and then cured through an induction furnace in the electro-galvanizing line. New anti-fingerprint steel was evaluated for quality performance through such procedures as the salt spray test for corrosion resistance, tribological test for abrasion resistance, and conductivity test for surface electric conductance regarding to both types of polymer resin and coating weight of composite solution. New composite coated anti-fingerprint steels afford both better corrosion resistance and abrasion properties compared to conventional anti-fingerprint steel that mainly consists of acrylate polymers. Detailed discussions of both composite solutions and experimental results suggest that urethane modifications of acrylate polymers of composite solutions play a key role in enhanced quality performances.