Compliments are great.Maybe someone does well on a test.Praise them for their good work.Say,"Good job!"or"I'm proud of you!"Someone may have a wonderful idea.Then you can say,"That’s a gr...Compliments are great.Maybe someone does well on a test.Praise them for their good work.Say,"Good job!"or"I'm proud of you!"Someone may have a wonderful idea.Then you can say,"That’s a great idea!"展开更多
目的探究标准化以问题为中心的医学课程(problem-centered medical curriculum,PCMC)联合案例教学法(case-based learning,CBL)在麻醉科本科实习生教学中的应用效果。方法选取2023年7月—2024年6月天津医科大学第二医院麻醉科的100名本...目的探究标准化以问题为中心的医学课程(problem-centered medical curriculum,PCMC)联合案例教学法(case-based learning,CBL)在麻醉科本科实习生教学中的应用效果。方法选取2023年7月—2024年6月天津医科大学第二医院麻醉科的100名本科实习生作为研究对象,根据不同教学方法分为对照组与研究组,各50名。对照组采用CBL教学;研究组采用标准化PCMC联合CBL教学。比较两组的考核成绩、核心能力及教学满意度。结果研究组的理论成绩和操作成绩分别为(94.63±4.27)分与(95.75±3.91)分,均高于对照组的(84.28±5.03)分与(85.62±4.38)分,差异均有统计学意义(t=12.164,15.813;P均<0.05)。研究组的各项核心能力评分均高于对照组,差异均有统计学意义(P均<0.05)。研究组教学满意度高于对照组,差异有统计学意义(P<0.05)。结论标准化PCMC联合CBL教学可提升麻醉科本科实习生的考核成绩、核心能力及教学满意度。展开更多
随着高速铁路的不断发展和列车速度的不断提高,高铁场景下车地通信的可靠性和高效性引起广泛关注。列车速度的提升导致更加频繁的越区切换,使系统的可靠性得不到保障,因此列车速度的提升对高铁通信网络的安全性和可靠性产生严重影响。...随着高速铁路的不断发展和列车速度的不断提高,高铁场景下车地通信的可靠性和高效性引起广泛关注。列车速度的提升导致更加频繁的越区切换,使系统的可靠性得不到保障,因此列车速度的提升对高铁通信网络的安全性和可靠性产生严重影响。本文提出1种将LTE-A(Long Term Evolution-Advanced)网络应用到高速铁路场景并基于协同多点传输/接收CoMP(Coordinated Multi-Point transmission/reception)技术的切换优化方案模型,方案参考协作集加入模型。对系统切换成功率等进行性能分析,并与传统切换方案进行性能对比。分析表明:本文基于CoMP的切换方案可有效提升高移动性下网络的切换成功概率,明显改善系统的可靠性和效率。展开更多
Influence of high light stress on the photosynthesis of flag leaves of indica subspecies (cv. “Shanyou 63', sensitive to photoinhibition) and japonica subspecies (cv. “Wuyujing', resistant to photoin...Influence of high light stress on the photosynthesis of flag leaves of indica subspecies (cv. “Shanyou 63', sensitive to photoinhibition) and japonica subspecies (cv. “Wuyujing', resistant to photoinhibition) of rice ( Oryza sativa L.) was comparatively investigated. In both cultivars of rice, the excitation energy distribution between two photosystems was altered and the excitation energy transfer from light harvesting chlorophyll protein complexes to PSⅡ was inhibited by high light stress. These decreases were more pronounced in indica rice cultivar as compared to japonica one. The analysis of mild SDS_PAGE showed that in indica rice, high light stress almost disaggregated the trimer of light harvesting chlorophyll protein complexes of PSⅡ (LHC Ⅱ 1). The stress reduced the contents of internal antennae chlorophyll protein complexes of PSⅡ (CPa), light harvesting chlorophyll protein of PSⅠ (CPⅠa) and Chl a protein complex of PSⅠ reaction center (CPⅠ) as well as dimer of LHCⅡ (LHCⅡ 2) in indica rice. In japonica subspecies, however, high light stress depressed the contents of LHCⅡ 1, CPa and CPⅠa, but slightly impacted on CPⅠ content. Moreover, the increase in the contents of monomer of LHCⅡ by high light stress was found in both subspecies. In consistent with above results, analysis of polypeptide indicated that the amounts of 27 kD and 25 kD polypeptide of LHCⅡ in particular, as well as that of 21 kD polypeptide of CPⅠa were reduced by high light stress in both subspecies. It was found that, comparing with japonica rice, the stress pronouncedly diminished 43 kD and 47 kD proteins of CPa and 23 kD extrisic protein in indica rice.展开更多
文摘Compliments are great.Maybe someone does well on a test.Praise them for their good work.Say,"Good job!"or"I'm proud of you!"Someone may have a wonderful idea.Then you can say,"That’s a great idea!"
文摘目的探究标准化以问题为中心的医学课程(problem-centered medical curriculum,PCMC)联合案例教学法(case-based learning,CBL)在麻醉科本科实习生教学中的应用效果。方法选取2023年7月—2024年6月天津医科大学第二医院麻醉科的100名本科实习生作为研究对象,根据不同教学方法分为对照组与研究组,各50名。对照组采用CBL教学;研究组采用标准化PCMC联合CBL教学。比较两组的考核成绩、核心能力及教学满意度。结果研究组的理论成绩和操作成绩分别为(94.63±4.27)分与(95.75±3.91)分,均高于对照组的(84.28±5.03)分与(85.62±4.38)分,差异均有统计学意义(t=12.164,15.813;P均<0.05)。研究组的各项核心能力评分均高于对照组,差异均有统计学意义(P均<0.05)。研究组教学满意度高于对照组,差异有统计学意义(P<0.05)。结论标准化PCMC联合CBL教学可提升麻醉科本科实习生的考核成绩、核心能力及教学满意度。
文摘随着高速铁路的不断发展和列车速度的不断提高,高铁场景下车地通信的可靠性和高效性引起广泛关注。列车速度的提升导致更加频繁的越区切换,使系统的可靠性得不到保障,因此列车速度的提升对高铁通信网络的安全性和可靠性产生严重影响。本文提出1种将LTE-A(Long Term Evolution-Advanced)网络应用到高速铁路场景并基于协同多点传输/接收CoMP(Coordinated Multi-Point transmission/reception)技术的切换优化方案模型,方案参考协作集加入模型。对系统切换成功率等进行性能分析,并与传统切换方案进行性能对比。分析表明:本文基于CoMP的切换方案可有效提升高移动性下网络的切换成功概率,明显改善系统的可靠性和效率。
文摘Influence of high light stress on the photosynthesis of flag leaves of indica subspecies (cv. “Shanyou 63', sensitive to photoinhibition) and japonica subspecies (cv. “Wuyujing', resistant to photoinhibition) of rice ( Oryza sativa L.) was comparatively investigated. In both cultivars of rice, the excitation energy distribution between two photosystems was altered and the excitation energy transfer from light harvesting chlorophyll protein complexes to PSⅡ was inhibited by high light stress. These decreases were more pronounced in indica rice cultivar as compared to japonica one. The analysis of mild SDS_PAGE showed that in indica rice, high light stress almost disaggregated the trimer of light harvesting chlorophyll protein complexes of PSⅡ (LHC Ⅱ 1). The stress reduced the contents of internal antennae chlorophyll protein complexes of PSⅡ (CPa), light harvesting chlorophyll protein of PSⅠ (CPⅠa) and Chl a protein complex of PSⅠ reaction center (CPⅠ) as well as dimer of LHCⅡ (LHCⅡ 2) in indica rice. In japonica subspecies, however, high light stress depressed the contents of LHCⅡ 1, CPa and CPⅠa, but slightly impacted on CPⅠ content. Moreover, the increase in the contents of monomer of LHCⅡ by high light stress was found in both subspecies. In consistent with above results, analysis of polypeptide indicated that the amounts of 27 kD and 25 kD polypeptide of LHCⅡ in particular, as well as that of 21 kD polypeptide of CPⅠa were reduced by high light stress in both subspecies. It was found that, comparing with japonica rice, the stress pronouncedly diminished 43 kD and 47 kD proteins of CPa and 23 kD extrisic protein in indica rice.
