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백일현 한국기계기술학회 2023 한국기계기술학회지 Vol.25 No.6
The curb weight of electric trucks is more than 10% higher than that of conventional internal combustion engine trucks due to the motor and battery. For this reason, cargo box developed for small electric trucks is required weight reduction, and cargo door that can reduce weight and maintain strength are being developed. In this paper, we designed the lightweight cargo door, confirmed the stability of the door through structural analysis, and developed a cargo box door that was more than 25% lighter by applying composite materials such as Sheet Molding Compound(SMC) and Fiber Reinforced Plastic(FRP).
육골 폐기물 재활용을 위한 파쇄 및 포장 시스템의 개발
백일현 한국기계기술학회 2018 한국기계기술학회지 Vol.20 No.6
Wasted meat & bone has generated as byproducts in the slaughtering process of livestock and also faced with demands for its recycling and environmental protection. Many studies have been conducted to recycle byproducts and carried out mainly on the crushing of bones and the vacuum packing technology of products. In this study, the crushing unit, transporting unit, separated unit and packing unit have designed fordevelopment of the crushing and packing systems. Also, to confirm the performance of this system, the experimental verification were carried out the working noise and packing weight.
Anisotropic Acorn-like Particle Fabrication Via a Dynamic Phase Separation Method
백일현,박철호 한국막학회 2019 멤브레인 Vol.29 No.1
Anisotropic particles have been issued in various fields due to their unique physical properties. Herein, a novel dynamic phase separation method (DPS) is introduced to fabricate anisotropic acorn-like nanoparticles. DPS consists of two dynamic conditions; solvent evaporation and nonsolvent induced precipitation. The bottom layer is controlled by feeding the water as a non-solvent diluent, and the phase separation of the upper layer relies on the diffusion and evaporation of a volatile good solvent. At this condition, the acorn-like particles were fabricated. Under a closed box filled with water (spontaneous phase separation), monodisperse polystyrene (PS) particles were synthesized. At the coexistence between DPS and spontaneous phase separation, the sizes of cap and particle were changed. Also, the volume of PS solutions influences on the particle shape. Since the unique structures could be utilized into various applications, if advanced techniques such as membrane-based controlled water feeding is developed, monodisperse acorn-like particles could be tuned.
백일현,김종혁,이명석,백광호,한태호,박현주,박상훈,장웅기,김우중,박충기 대한간학회 2002 Clinical and Molecular Hepatology(대한간학회지) Vol.8 No.4
Primary hepatic leiomyosarcoma is a very rare malignant tumor of the liver and rather slowly progressing disease. When the tumor is solitary or even multiple but located in one lobe, the treatment of choice is an operation. We report a case of huge leiomyosarcoma in a 58-year old female patient treated by surgical resection.(Korean J Hepatol 2002;8:481-485)