• The Journal of Internal Korean Medicine
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• v.37 no.2
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• pp.218-224
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• 2016

Objective: This study reports on the effects of CheonPae-hwan among asthma patients.Method: This case study was conducted with two asthma patients who had visited a traditional Korean medicine clinic. CheonPae-hwan was prescribed to the two patients; we then evaluated the objective symptom changes through forced vital capacity (FVC) and forced expiratory volume at one second (FEV₁). Dyspnea-subjective symptom change was evaluated with the visual analog scale (VAS).Results: In case 1, FVC increased from 2.24 to 2.55 after treatment, FEV₁ increased from 1.86 to 1.99, and VAS decreased from 2 to 0. In case 2, FVC increased from 1.51 to 2.79 after treatment, FEV₁ increased from 1.12 to 2.22, and VAS decreased from 8 to 5.Conclusion: CheonPae-hwan appeared to be effective for treating the two asthma patients in our study.

• Applied Chemistry for Engineering
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• v.5 no.5
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• pp.786-794
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• 1994

The strength and durability of polymer-cement mortars were investigated. The specimens of polymer-cement mortar were prepared by using styrene-butadiene rubber(SBR) latex, ethylene-vinyl acetate(EVA) emulsion and polyacrylic ester(PAE) emulsion with various polymer-cement ratios(5, 10, 15, 20wt%). For the evaluation of durability of polymer-cement mortars, freezing-thawing, acid resistance and heat resistance tests were conducted. With an increase of polymer-cement ratio, the frost resistance of polymer-cement mortars was greatly improved, but acid and heat resistance were deteriorated. The compressive and flexural strengths of SBR polymer-cement mortars were improved with an increase of polymer-cement ratio, whereas those of EVA and PAE polymer-cement mortars reached maximum value at polymer-cement ratio of 10wt%.

• Applied Chemistry for Engineering
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• v.8 no.6
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• pp.979-984
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• 1997

Test specimens of polymer-cement concrete composites were prepared using styrene-butadiene rubber(SBR) latex, ethylenevinyl acetate(EVA) and polyacrylic ester(PAE) emulsions as polymer dispersions in cement modified system at constant slump($10{\pm}0.5cm$), then compressive and flexural strengths water absorption, pore size distribution, and microstructures were investigated. Compressive and flexural strengths of these composites were remarkably improved with an increase of polymer-cement ratio. These composites had a desirable pore size distribution against frost damage due to a small capillary pore volume. Continuous polymer film was able to form in higher than 15% of polymer cement ratio.