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Song Han,Wei Liu,Shaoshuai Wu,Zhaoxia Long,Qingxi Hou 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1
Effects of four different kinds of industrial grade MgO as one alkali source in the alkaline peroxidebleaching of poplar chemi-thermomechanical pulp (CTMP) were investigated. The particle size andactivity of the MgO played the most important role in the improvement of optical and strengthproperties of the bleached CTMP. At a 25% substitution percentage of MgO for NaOH, a 77.4%ISObrightness and the optimal tensile index of the bleached CTMP could be obtained. When industrial gradeMgO was applied, appropriate increase in Na2SiO3 dosage and pulp consistency could improve thebrightness and strength properties of the bleached CTMP.
Xianlu Zeng,Xuefang Pan,Zhaoxia Song,Lei Zhai,Xiaoyun Li 한국분자세포생물학회 2005 Molecules and cells Vol.20 No.2
INI1/hSNF5/BAF47 is a core component of the hSWI/ SNF ATP-dependent chromatin remodeling complex,and it has been implicated in regulating gene expression, cell division and tumorigenesis. We investigated whether INI1/hSNF5/BAF47 functions in activation of the colony stimulating factor 1 (CSF1) promoter in HeLa cells. Overexpression of INI1/hSNF5/BAF47 promoted CSF1 transcription, and siRNA targeting INI1/hSNF5/ BAF47 (siINI1) strongly inhibited the activity of the CSF1 promoter. We demonstrated that all conserved domains of INI1/hSNF5/BAF47 are needed for CSF1 transcription. ChIP experiment showed that INI1/ hSNF5/BAF47 is recruited to the region of the CSF1 promoter. Taken together, these results indicate that INI1/hSNF5/BAF47 is involved in activation of the CSF1 promoter
An exchange bias observed in Tb/Cr/FeCo trilayers with ultrathin Cr layer at low temperature
Sun Li,Li Xiaoyan,Zhang Yiwei,Song Hengbo,Zhang Wen,Kou Zhaoxia,Zhang Dong,Liu Xiaoying,Fei Hongyang,Pan Mengmei,Zhao Zhibin,Zhai Ya 한국물리학회 2022 Current Applied Physics Vol.44 No.-
Positive exchange bias field (He) is observed in Tb/Cr (tCr)/FeCo trilayers at 5 K without cooling field, and negative He for Tb/FeCo bilayer. The negative He of Tb/FeCo implies the FM coupling at the interface due to Co and Fe dominate in the magnetization of the ferrimagnetic interlayer alloy of FeCo and Tb. With the inserting of Cr layer, this situation is broken, and the positive He implies the antiferromagnetic interlayer coupling. A peak of He = 6.0 mT for trilayers with tCr = 1.5 nm is corresponding to the minimum value of coercivity as a function of tCr at 5 K, which is used to study the effect of the cooling field (Hfc) on He as a function of temperature. It is found that Hfc of 100 mT triggers He from positive to negative at T ≤ 15 K. The magnetoresistance results also confirm the coexistence of multiple MR mechanisms in these trilayers.