目的:探讨"3L"教学模式在人工髋关节置换术快速康复护理中的应用效果。方法:选取172名骨关节科实习护士作为研究对象,按数字表法随机分为观察组和对照组各86名。对照组采用"2L"教学模式,即以问题为导向的教学方法(P...目的:探讨"3L"教学模式在人工髋关节置换术快速康复护理中的应用效果。方法:选取172名骨关节科实习护士作为研究对象,按数字表法随机分为观察组和对照组各86名。对照组采用"2L"教学模式,即以问题为导向的教学方法(Problem Based Learning,PBL)+案例教学法(Case Based Learning,CBL)教学。观察组采用"3L"教学模式,即在对照组基础上,增加以授课为基础的学习模式(Lecture Based Learning,LBL)教学。比较两组实习护士出科考核成绩及教学模式效果评分。结果:观察组理论成绩、操作成绩及教学模式效果评分均高于对照组(P<0.05)。结论:"3L"教学模式能提高实习护士掌握人工髋关节置换术快速康复护理理论和操作技术,提高教学模式效果。展开更多
Novel red-emitting phosphors Sr2MgSi2O7：Eu3＋ were prepared by gel-combustion method assisted by microwave. The phase struc-ture and luminescent properties of as-synthesized phosphors were investigated by XRD and flu...Novel red-emitting phosphors Sr2MgSi2O7：Eu3＋ were prepared by gel-combustion method assisted by microwave. The phase struc-ture and luminescent properties of as-synthesized phosphors were investigated by XRD and fluorescence spectrophotometer, respectively. The results showed that the as-synthesized sample was Sr2MgSi2O7 with tetragonal crystal structure. The excitation spectrum of Sr2MgSi2O7：Eu3＋ was composed of two major parts： one was the broad band between 200 and 350 nm, which belonged to the charge transfer of Eu3＋-O2-; the other consisted of a series of sharp lines between 350 and 450 nm, ascribed to the f-f transition of Eu3＋. The emission spec-trum consisted of two emission peaks at 593 and 616 nm, which was attributed to 5D0→7F1 and 5D0→7F2 of Eu3＋, respectively. The concen-tration of Eu3＋ （x） had great effect on the emission intensity of Sr2-xMgSi2O7：Eu3＋x. When x varied in the range of 0.04-0.18, the intensity of emission peaks at 593 and 616 nm increased gradually with the concentration of Eu3＋ increasing. It was interesting that no concentration quenching occurred. Moreover, the luminescent intensity could be greatly enhanced with incorporation of charge compensator Li＋ ions.展开更多
文摘目的:探讨"3L"教学模式在人工髋关节置换术快速康复护理中的应用效果。方法:选取172名骨关节科实习护士作为研究对象,按数字表法随机分为观察组和对照组各86名。对照组采用"2L"教学模式,即以问题为导向的教学方法(Problem Based Learning,PBL)+案例教学法(Case Based Learning,CBL)教学。观察组采用"3L"教学模式,即在对照组基础上,增加以授课为基础的学习模式(Lecture Based Learning,LBL)教学。比较两组实习护士出科考核成绩及教学模式效果评分。结果:观察组理论成绩、操作成绩及教学模式效果评分均高于对照组(P<0.05)。结论:"3L"教学模式能提高实习护士掌握人工髋关节置换术快速康复护理理论和操作技术,提高教学模式效果。
基金Project supported by the National Natural Science Foundation of China (20675023)
文摘Novel red-emitting phosphors Sr2MgSi2O7：Eu3＋ were prepared by gel-combustion method assisted by microwave. The phase struc-ture and luminescent properties of as-synthesized phosphors were investigated by XRD and fluorescence spectrophotometer, respectively. The results showed that the as-synthesized sample was Sr2MgSi2O7 with tetragonal crystal structure. The excitation spectrum of Sr2MgSi2O7：Eu3＋ was composed of two major parts： one was the broad band between 200 and 350 nm, which belonged to the charge transfer of Eu3＋-O2-; the other consisted of a series of sharp lines between 350 and 450 nm, ascribed to the f-f transition of Eu3＋. The emission spec-trum consisted of two emission peaks at 593 and 616 nm, which was attributed to 5D0→7F1 and 5D0→7F2 of Eu3＋, respectively. The concen-tration of Eu3＋ （x） had great effect on the emission intensity of Sr2-xMgSi2O7：Eu3＋x. When x varied in the range of 0.04-0.18, the intensity of emission peaks at 593 and 616 nm increased gradually with the concentration of Eu3＋ increasing. It was interesting that no concentration quenching occurred. Moreover, the luminescent intensity could be greatly enhanced with incorporation of charge compensator Li＋ ions.
