http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Van Do Nguyen,Guinyun Kim,Duc Khue Pham,Duc Thiep Tran,Hee-Seock Lee,Hengsik Kang,In Soo Ko,Moo-Hyun Cho,Tien Thanh Kim,Van Duan Phung,남궁원,Young Seok Lee,Youngdo Oh 한국물리학회 2007 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.50 No.2
We measured isomeric cross-section ratios for the $^{45}$Sc($\gamma$,$n$)$^{44m,g}$Sc, $^{nat}$Ti($\gamma$,$x$)$^{44m,g}$Sc, $^{103}$Rh($\gamma$,4$n$)$^{99m,g}$Rh, and $^{nat}$Fe($\gamma$,$x$)$^{52m,g}$Mn reactions at the 65-MeV electron linac of the Pohang Accelerator Laborator by using the activation method. Samples of natural Sc, Ti, Rh, and Fe metallic foils were irradiated in an uncollimated bremsstrahlung beam. The isomeric cross-section ratios were determined from the activity measurement with a high-purity germanium detector. The measured isomeric ratios were 0.21 $\pm$ 0.03, 0.12 $\pm$ 0.03, 1.43 $\pm$ 0.20, and 0.28 $\pm$ 0.04 for the $^{45}$Sc($\gamma$,$n$)$^{44m,g}$Sc, $^{nat}$Ti($\gamma$,$x$)$^{44m,g}$Sc, $^{103}$Rh($\gamma$,4$n$)$^{99m,g}$Rh, and $^{nat}$Fe($\gamma$,$x$)$^{52m,g}$Mn reactions, respectively. The present results for the $^{45}$Sc($\gamma$,$n$)$^{44m,g}$Sc and $^{nat}$Fe($\gamma$,$x$)$^{52m,g}$Mn reactions are in good agreement with other measurements. The present results for $^{nat}$Ti($\gamma$,$x$)$^{44m,g}$Sc and $^{103}$Rh($\gamma$,4$n$)$^{99m,g}$Rh reactions are the first such measurements.
New Dibenzocyclooctadiene Lignan from Kadsura induta and Their Cytotoxic Activities
Pham, Thi Hong Minh,Do, Tien Lam,Nguyen, Quyet Tien,Nguyen, Ngoc Tuan,Vu, Phuong Nhung,Nong, Van Hai,Phan, Van Kiem,Nguyen, Xuan Nhiem,Chau, Van Minh,Park, SeonJu,Kim, Seung Hyun Korean Chemical Society 2014 Bulletin of the Korean Chemical Society Vol.35 No.6
Yield ratios of the isomeric pair <sup>85 m,g</sup>Sr formed in <sup>nat</sup>Sr(γ,xn) reactions
Do, Nguyen Van,Thanh, Kim Tien,Khue, Pham Duc,Thi Hien, Nguyen,Kim, Guinyun,Kim, Kwangsoo,Shin, Sung-Gyun,Cho, Moo-Hyun,Kye, Yong-Uk Pergamon 2018 Radiation physics and chemistry Vol.149 No.-
<P>The yield ratios of Sr-85m,Sr-g were measured in the Sr-nat(gamma,xn)Sr-85m,Sr-g reactions with the bremsstrahlung end-point energies of 55-, 60-, and 65-MeV. The experiment was carried out by the activation method in combination with high resolution HPGe gamma-ray spectroscopy. In order to improve the accuracy of the experimental results, appropriate experimental procedure was used to reduce the influence of the strong annihilation peak (511 keV) to the 514 keV gamma-ray peak of Sr-85g. The experimental results are compared to theoretical predictions using code TALYS-1.6. The present results for 55-, and 60-MeV bremsstrahlung end-point energies have been measured for the first time.</P>
A DTC Stator Flux Algorithm for the Performance Improvement of Induction Traction Motors
Van-Tien, Pham,Zheng, Trillion Q.,Yang, Zhong-ping,Lin, Fei,Do, Viet-dung The Korean Institute of Power Electronics 2016 JOURNAL OF POWER ELECTRONICS Vol.16 No.2
In view of the speed control characteristics of induction traction motors and the problems of direct torque control (DTC) algorithms in current applications, this paper presents a DTC algorithm characterized by a symmetrical polygon flux control and a closed loop power control in the constant-torque base speed region and constant-power field-weakening region of induction traction motors. This algorithm only needs to add a stator flux control algorithm to the traditional DTC structures. This has the benefit of simplicity, while maintaining the features of traditional algorithms such as a rapid dynamic response, uncomplicated control circuit, reduced dependence on motor parameters, etc. In addition, it obtains a smoother flux trajectory that is conducive to improvement of the harmonic elimination capability, the switching frequency utilization as well as the torque and power performance in the field-weakening region. The effectiveness and feasibility of this DTC algorithm are demonstrated by both theoretical analysis and experimental results.