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Jung-Youl Choi, Jee-Seung Chung, Dae-Hui Ahn and Jae-Min Han
To date, the spring stiffness of resilience pads was mostly evaluated based on conventional (site measurement and laboratory tests) methods. Most studies in the past analyzed the effects of the deterioration of resilience pads on track damage. To examine...
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Woon Yong Choi, Jae-Hun Sim, Jung-Youl Lee, Do Hyung Kang and Hyeon Yong Lee
The Spirulina maxima exact from a non-thermal ultrasonic process (UE) contains 17.5 mg/g of total chlorophyll, compared to 6.24 mg/g of chlorophyll derived from the conventional 70% ethanol extraction at 80 °C for 12 h (EE). The UE also showed relatively...
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