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신용진,정재선 고려대학교 공학기술연구소 1972 고려대학교 생산기술연구소 연구보고 Vol.3 No.2
The heat efficiencies have been measured and the gas (carbon monoxide in particular) leakage has been investigated for two Korean conventional (ondol) rooms (one is equiped with the motor fan system and the other is note by using two briquets in a day. It is claimed that the room equiped with the motor fan system is almost twice better than the other in the heat efficiency. No matter what weather it is, the gas leakage has been prevented completely by using the motor fan system without -making the loss of the heat efficiency.
X대역(帶域) μ-파에 의한 Nickel-Ferrite 의 강자성(强磁性) 공명흡수(共鳴吸收)
신용진,정재선 고려대학교 공학기술연구소 1973 고려대학교 생산기술연구소 연구보고 Vol.4 No.1
As the first sample, nickel ferrite film was prepared by arc-plasma torch consisted of jetting flame containing 90 oxygen or more. And as the second sample, single crystal of nickel ferrite was grown from Bridgeman method under oxygen pressure of 5 atm. and flux method in air. These ferrites were submitted to the measurement of the density, saturation magnetization, magnetic resonance line width (ΔH) at X-band and crystal orientation as well as the observation of the microstructure.