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H-mode experimental integrated modeling of impurity injection to control divertor heat flux on HL-2A
Yu Peng,Huang Qianhong,Zhong Yijun,Wu Ting,Wang Jun,Wang Zhanhui,Gong Xue-yu 한국물리학회 2023 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.82 No.8
Based on the METIS integrated modeling platform, combined with the experimental data of the #34512 shot detached divertor operation on the HL-2A, this paper selects suitable physical models, and compares and analyzes the integrated modeling results with the experimental results. The modeling results are in good agreement with the experimental results. On this basis, the reason for the decrease of the peak heat fux on the divertor targets is investigated using the METIS simulator. The results show that the two factors of entering the H-mode and the radiation enhancement efect generated by impurity injection work together to reduce the heat fow on the targets. Finally, the diferent efects of N, Ar and Ne impurity gases on the heat fux reduction of the targets are simulated under the condition that the plasma line-average efective charge (Zef) is kept unchanged. The results show that N and Ar are both better than Ne in controlling the heat fow on the targets, and N has the best compatibility in the core, which can not only reduce the boundary heat fow but also maintain the core confnement performance.
Anti-Oxidation of Cultured Cordyceps militaris Growing on Silkworm Pupa
Gong Cheng-Liang,Pan Zhong-Hua,Zheng Xiao-Jian,Xue Ren-Yu,Cao Guang Li Korean Society of Sericultural Science 2006 International Journal of Industrial Entomology Vol.12 No.1
Cordyceps, one of the well-known traditional Chinese medicines, consists of the dried fungus C. sinensis growing on the larva of caterpillar. It is commonly used as a tonic of restoring vital body functions. In order to evaluate the pharmacological effects of C. militaris, the anti-oxidation and antiaging effect of cultured C. militaris growing on pupa of silkworm Bombyx mori, were investigated. The results showed! that the contents of lipofusin in myocardium were reduced and the SOD activity in the liver were elevated in a dose-dependent manner while no effect was observed for blood GSH-Px activity and liver MDA content in mice perfused with the cultured C. militaris compared to those untreated mice. Furthermore, the average life span, maximum life span and 50% death time of the fruit flies treated with cultured C. militaris were markedly prolonged. The results suggest that the cultured C. militaris growing on pupa of silkworm possesses anti-oxidation and delay senescence activity.
MICROWAVE-ASSISTED SYNTHESIS AND CATALYTIC PERFORMANCE OF HIERARCHICAL Cu2O NANOSTRUCTURES
XUE-YUN GONG,YU-PENG GAO,LI-BO WANG,PENG-FEI GUO 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2013 NANO Vol.8 No.5
Hierarchical Cu2O nanostructures have been successfully fabricated on a large scale using copper acetate and glucose as starting reactants, CTAB as an additive via a microwave-assisted process. The influences of CTAB dosage and reaction time on the morphology of the products were investigated. The resulting Cu2O nanostructures were characterized by means of X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). FESEM images show that the Cu2O nanostructures are microsphere, which are composed of nanoparticles. The concentration of CTAB plays a key role in the growth of Cu2O nanostructures under experimental conditions. The possible formation mechanism of these hierarchical Cu2O nanostructures has been proposed. Meanwhile, the catalytic performances of these Cu2O microspheres for thermal decomposition of ammonium perchlorate (AP) were investigated using DSC. The results revealed that Cu2O have a great influence on the thermal decomposition of AP. The additions of Cu2O powders lower the high decomposition temperature of AP.
Entanglement Dynamics of Electron Spins in Quantum Dots Under a Nonuniform Magnetic Field
Feng-Xue Zhou,Yi-Hong Qi,Yue-Ping Niu,Shang-Qing Gong,Jun Qian,Ting Yu,Franco Nori 한국물리학회 2012 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.60 No.8
We investigate entanglement of two coupled electron spins in quantum dots (QDs) in the presence of an inhomogeneous magnetic field. The great effects of the inhomogeneous field are discussed for the dynamics of entanglement. It is shown that due to the system's symmetry, the inhomogeneity of the field does not affect the evolution of entanglement for Φ-type Bell state, while it plays a key role for Ψ-type Bell state. For the maximal entangled Bell states, the field is positive for the entanglement dynamics. The mean field can increase the entanglement revival for Φ-type Bell state while the inhomogeneous field can promote the entanglement revival for Ψ-type Bell state. For the unentangled initial states, the field is destructive for the entanglement generation induced by the coupling of the two spins.
Ning Liu,Yu-Yang Song,Yi Qin,Xue Gong,Yan-Lin Liu 한국식품과학회 2015 Food Science and Biotechnology Vol.24 No.6
Eight Saccharomyces cerevisiae strains were used for preparation of Cabernet Sauvignon musts from Yuma vineyard in China, where the strains were isolated, to study the importance of yeast strain for optimization of Cabernet Sauvignon wine color and anthocyanin composition. Differences in chromatic characteristics between indigenous yeast strains and a commercial F15 control were not found. Twenty-one anthocyanins were detected and quantified using HPLC-MS. Concentrations of anthocyanins were significantly (p<0.05) influenced by the yeast strain used. Use of the commercial F15 yeast resulted in the highest anthocyanin concentration. Among 9 pyranoanthocyanins detected, amounts of must were influenced by the yeast strain used. The color of wine produced using the N11424 yeast was more stable because of a higher pyranoanthocyanin concentration. Use of Principal Component Analysis indicated that indigenous yeast treatments were separated from the F15 control yeast treatment based on anthocyanin components.