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Definition and geometrical consideration of the domain walls of Pb₃(PO₄)₂ ferroelastic crystals
Jeong, Se-Young,Jang,Min-Su,Lim, Ae-Ran 부산대학교 기초과학연구소 1994 부산대학교 기초과학연구소 연구논문집 Vol.14 No.-
Pb₃(PO₄)₂has two types of domain walls, the W wall and the W^(1) wall. However, both types of domain walls in Pb₃(PO₄)₂belong to the W wall, because they both can be represented as crystallographically prominent planes of fixed indices. We will call them the W_(m) wall and the W_(b) wall instead of the W wall and the W^(1) wall, respectively. The z axis of the prototypic phase is not parallel but a little inclined to the normal of (100). Local reorientations in a narrow temperature range near T_(c) cause superpositions of small inclined z axes above 180℃, which give a small birefringence at the conoscope image.
( Ae Ran Lee ),( Jeong A Park ),( Young Eun Kim ),( Hyung Joo Kwon ),( Young Hee Lee ) 한국조직공학·재생의학회 2009 조직공학과 재생의학 Vol.6 No.14
Stromal cell-derived factor-1 (SDF-1/CXCL12) enhances the survival of hematopoietic stem cells, progenitor cells, and a human progenitor cell line MO7e, especially in synergy with other cytokines. Previously, we reported that c-Fos was synergistically induced by combined stimulation with SDF-1/CXCL12 plus other cytokines. Here, we aimed to evaluate that induced c-Fos expression is required for the survival enhancement in MO7e cells. First by using RNase protection assay, we confirmed that synergistic induction of c-Fos was unique among several stress-related genes. Since c-Fos is known as one of the components of transcription factor AP-1, we performed electrophoretic mobility shift assay. The DNA binding activity of AP-1 was also synergistically enhanced by combined stimulation, and c-Fos was identified in the DNA bound complex. To further evaluate the significance of c-Fos expression for survival of MO7e cells, we employed cell permeable c-Fos dominant negative mutant form (A-Fos-MTS) and protein transduction procedure. Inhibition of c-Fos by treatment with A-Fos-MTS significantly reduced survival of MO7e cells in the presence of SDF-1/CXCL12 plus low concentration of GM-CSF. Therefore, we suggest that induction of c-Fos and enhanced AP-1 activity contribute to survival effect of cytokines in MO7e cells.
Ae Ran Lee,Gyoung Min Kim,Jae Yong Park,Hyeon Deok Jo,Jae Ho Cha,Young Sun Song,Ji Yeon Chun,Jeong Hwan Kim 한국응용생명화학회 2010 Applied Biological Chemistry (Appl Biol Chem) Vol.53 No.1
Bacillus amyloliquefaciens CH86-1 isolated from cheonggukjang was found to have strong fibrinolytic activity when grown on Luria-Bertani medium, and this activity increased sharply when the cells entered the stationary phase. The major fibrinolytic enzyme