Chloroplasts were isolated from spinach treated with taCl3, CeCl3, and NdCl3. Because of owning 4f electron characteristics and alternation valence, Ce treatment presented the highest enhancement in light absorption, ...Chloroplasts were isolated from spinach treated with taCl3, CeCl3, and NdCl3. Because of owning 4f electron characteristics and alternation valence, Ce treatment presented the highest enhancement in light absorption, energy transfer from LHC Ⅱ to PS Ⅱ, excitation energy distribution from PS Ⅰ to PS Ⅱ, and fluorescence quantum yield around 680 nm. Compared with Ce treatment, Nd treatment resulted in relatively lower enhancement in these physiological indices, as Nd did not have alternation valence. La treatment presented the lowest enhancement, as La did not have either 4f electron or alternation valence. The increase in activities of whole chain electron transport, PS ⅡDCPIP photoreduction, and oxygen evolution of chloroplasts was of the following order： Ce〉Nd 〉La〉 control. However, the photoreduction activities of spinach PS I almost did not change with La, Ce, or Nd treatments. The results suggested that 4f electron characteristics and alternation valence of rare earths had a close relationship with photosynthesis improvement.展开更多
在我国高等教育课程思政迅速发展的时代背景下,作为公共基础课的大学英语备受关注。目前,由于面临教学材料滞后和思政教学经验不足等问题,大学英语课程思政改革难以落到实处。将有关中国题材的优秀英文纪录片《鸟瞰中国》(China From Ab...在我国高等教育课程思政迅速发展的时代背景下,作为公共基础课的大学英语备受关注。目前,由于面临教学材料滞后和思政教学经验不足等问题,大学英语课程思政改革难以落到实处。将有关中国题材的优秀英文纪录片《鸟瞰中国》(China From Above)引进大学英语课堂,开展课程思政教学探索和实践,力图做到价值塑造、能力培养和知识传授的有机融合,旨在以个案的形式为大学英语课程思政改革提供参考。展开更多
基金Project supported by the National Natural Science Foundation of China (20671067, 30470150)
文摘Chloroplasts were isolated from spinach treated with taCl3, CeCl3, and NdCl3. Because of owning 4f electron characteristics and alternation valence, Ce treatment presented the highest enhancement in light absorption, energy transfer from LHC Ⅱ to PS Ⅱ, excitation energy distribution from PS Ⅰ to PS Ⅱ, and fluorescence quantum yield around 680 nm. Compared with Ce treatment, Nd treatment resulted in relatively lower enhancement in these physiological indices, as Nd did not have alternation valence. La treatment presented the lowest enhancement, as La did not have either 4f electron or alternation valence. The increase in activities of whole chain electron transport, PS ⅡDCPIP photoreduction, and oxygen evolution of chloroplasts was of the following order： Ce〉Nd 〉La〉 control. However, the photoreduction activities of spinach PS I almost did not change with La, Ce, or Nd treatments. The results suggested that 4f electron characteristics and alternation valence of rare earths had a close relationship with photosynthesis improvement.
基金2021年浙江工商大学省级以上平台自设项目“讲好中国故事、树立文化自信——语言学习与价值引领相融合的大学英语课程思政改革探索”2021年浙江工商大学研究生教学研究与改革项目“基于英文纪录片China:Time of Xi的研究生英语课程思政改革实践”阶段性研究成果。
文摘在我国高等教育课程思政迅速发展的时代背景下,作为公共基础课的大学英语备受关注。目前,由于面临教学材料滞后和思政教学经验不足等问题,大学英语课程思政改革难以落到实处。将有关中国题材的优秀英文纪录片《鸟瞰中国》(China From Above)引进大学英语课堂,开展课程思政教学探索和实践,力图做到价值塑造、能力培养和知识传授的有机融合,旨在以个案的形式为大学英语课程思政改革提供参考。
