Baikyoung Chung

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We report a neutron-scattering study to characterize the ordering and local dynamics of spherical micelles formed by the triblock copolymer polyethylene oxide (PEO)--polypropylene oxide (PPO)--polyethylene oxide (Pluronic) in aqueous solution. The study focuses on two Pluronic species, F68 and F108, that have the same weight fraction of PEO but that differ(More)
The components that define cereal-grain yield potential have not been well defined. The objective of this study was to collect many differing biological measurements from a long-term winter wheat (Triticum aestivum L.) study in an attempt to better define yield potential. Four treatments were sampled that annually received 0, 45, 90, and 135 kg N ha−1 at(More)
We report x-ray photon correlation spectroscopy and diffusing wave spectroscopy studies of depletion gels formed from nanoscale silica colloids in solutions of nonabsorbing polymer following the cessation of shear. The two techniques provide a quantitatively coherent picture of the dynamics as ballistic or convective motion of colloidal clusters whose(More)
VRF system has generally large size outdoor unit which can cover big capacity. Large size outdoor heat exchanger requires many refrigerant paths, because of pressure drop during evaporation and condensation. The increase of refrigerant path number may cause mal-distribution of refrigerant. Especially, heat exchangers which have vertically long geometry and(More)
Building multi air conditioners (VRF: Variable Refrigerant Flow system) are commonly used for buildings in Asia and Europe. It has several advantages compared to conventional central air conditioning, that is, higher efficiency, low maintenance cost and easy installation. For high efficiency and reliability, DC compressor was developed. Oil injection(More)
The Proton Engineering Frontier Project (PEFP) proposes the 1-2GeV rapid cycling synchrotron accelerator as an extension of the PEFP linac, which initially is a 15 Hz rapid-cycling synchrotron (RCS) with the injection energy of 100MeV. The target beam power is 58 kW at 1.0GeV beam energy in the first stage, through 5 stages of improvement it could be reach(More)
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