A new europium(Ⅲ) complex Eu2(C15H11O3)6(C12H8N2)2 has been synthesized with 2-(4-Methylbenzoyl)benzoic acid and 1,10-phenanthroline as ligands. Crystal data for the complex are as follows: monoclinic, space grou...A new europium(Ⅲ) complex Eu2(C15H11O3)6(C12H8N2)2 has been synthesized with 2-(4-Methylbenzoyl)benzoic acid and 1,10-phenanthroline as ligands. Crystal data for the complex are as follows: monoclinic, space group P21/n, a = 15.1238(5), b = 13.5928(4), c = 22.9840(7) ?, β = 104.132(3)o, V = 4582.0(2) ?3, Dc = 1.522 g/cm3, Z = 4, μ(Mo Kα) = 1.433 mm-1, F(000) = 2128, the final R = 0.0447 and wR = 0.0826. The Eu(Ⅲ) ion is coordinated by eight atoms to give a distorted square antiprism coordination geometry. The complex shows two intense fluorescence emission bands arising from the transitions of Eu3+: 5 D0 → 7 F1(594 nm) and 5 D0 → 7 F2(617 nm). The complex is an antiferromagnetism system in the range of 150~300 K. Also reported in the paper is the thermal stability property of the title complex.展开更多
目的:探索高分辨率MRI在评估舌肿瘤侵袭深度上的潜在应用价值。方法:收集46例舌鳞癌患者,均在1.5 T MRI上使用8通道头颈联合线圈进行检查,扫描序列T1W SE、T2W SE和3D-FIESTA。在MRI图像和标本上均测量正常上皮厚度、肿瘤深度和宽度。结...目的:探索高分辨率MRI在评估舌肿瘤侵袭深度上的潜在应用价值。方法:收集46例舌鳞癌患者,均在1.5 T MRI上使用8通道头颈联合线圈进行检查,扫描序列T1W SE、T2W SE和3D-FIESTA。在MRI图像和标本上均测量正常上皮厚度、肿瘤深度和宽度。结果:MRI可清晰显示舌黏膜上皮、固有层和肌肉。46例舌鳞癌(包括9例早期侵袭癌)均可清晰显示。对于黏膜厚度、肿瘤深度和宽度的测量值,MRI和肿瘤标本之间具有高度相关性。对于肿瘤深度和宽度测量,T2W SE和其他序列之间具有良好一致性。结论:高分辨率MRI用于评估舌癌肿瘤侵袭深度可靠。展开更多
基金supported by the cooperative project of Hengyang Normal University with Hengyang Yile New Materials Co.,Ltd.(No.HXKJ201905)
文摘A new europium(Ⅲ) complex Eu2(C15H11O3)6(C12H8N2)2 has been synthesized with 2-(4-Methylbenzoyl)benzoic acid and 1,10-phenanthroline as ligands. Crystal data for the complex are as follows: monoclinic, space group P21/n, a = 15.1238(5), b = 13.5928(4), c = 22.9840(7) ?, β = 104.132(3)o, V = 4582.0(2) ?3, Dc = 1.522 g/cm3, Z = 4, μ(Mo Kα) = 1.433 mm-1, F(000) = 2128, the final R = 0.0447 and wR = 0.0826. The Eu(Ⅲ) ion is coordinated by eight atoms to give a distorted square antiprism coordination geometry. The complex shows two intense fluorescence emission bands arising from the transitions of Eu3+: 5 D0 → 7 F1(594 nm) and 5 D0 → 7 F2(617 nm). The complex is an antiferromagnetism system in the range of 150~300 K. Also reported in the paper is the thermal stability property of the title complex.