Calix[4]-crown-5-sulfonyl cyclothiourea derivatives 6 and 7 were synthesized from calix[4]-crown-5-monosulfonylethylenediamine derivatives 4 and 5 and carbon disulfide through nucleophilic addition and subsequent cycl...Calix[4]-crown-5-sulfonyl cyclothiourea derivatives 6 and 7 were synthesized from calix[4]-crown-5-monosulfonylethylenediamine derivatives 4 and 5 and carbon disulfide through nucleophilic addition and subsequent cyclization of intramolecule at room temperature in aqueous solution. The advantages of the novel protocol are the mild reaction condition, free organic solvent, simple final treatment, easy isolation of products and excellent yields.展开更多
目的总结外固定支架针位护理最佳证据,为临床护理实践提供参考。方法基于“6S”证据资源金字塔模型,系统检索JBI循证卫生保健中心数据库、BMJ Best Practice、PubMed、Cochrane Library、UpToDate、NICE、医脉通、中国知网、万方知识数...目的总结外固定支架针位护理最佳证据,为临床护理实践提供参考。方法基于“6S”证据资源金字塔模型,系统检索JBI循证卫生保健中心数据库、BMJ Best Practice、PubMed、Cochrane Library、UpToDate、NICE、医脉通、中国知网、万方知识数据服务平台等数据库中与外固定支架针位护理相关的所有文献,文献类型包括指南、系统评价、专家共识、证据总结、随机对照试验等。检索时限为建库至2022年12月31日。由课题组成员根据相关文献质量评价标准独立进行质量评价,并结合专业判断对最终纳入文献进行提取整合、证据级别评定及汇总。结果共纳入文献13篇,并汇总13条证据,包括6个方面:外固定支架针位清洗液的选择、护理频次、敷料的选择、针道结痂的管理、是否按摩/按压针道位置及洗浴。结论该研究总结了外固定支架针位护理的最佳证据,建议临床医务人员结合临床实际选择性应用最佳证据,减少并发症的发生,改善患者结局。展开更多
Major economies in the world have raised various proposals to reduce carbon emissions by applying clean energies in a bid to tackle climate change. As a major consumer of coal, China is facing mounting pressure, and e...Major economies in the world have raised various proposals to reduce carbon emissions by applying clean energies in a bid to tackle climate change. As a major consumer of coal, China is facing mounting pressure, and experts are wrangling about which clean energy should come first on the government agenda. To get a closer look at the current situation in China, Beijing Review reporter Liu Yunyun sat down with Zhou Dadi, Director General Emeritus of the Energy Research Institute of the National Development and Reform Commission, who shared his insights on clean energy. Edited excerpts follow:展开更多
基金Financial support from the National Natural Science Foundation of China(No.20802049) and Program for New Century Excellent Talents in University of Tianjin City
文摘Calix[4]-crown-5-sulfonyl cyclothiourea derivatives 6 and 7 were synthesized from calix[4]-crown-5-monosulfonylethylenediamine derivatives 4 and 5 and carbon disulfide through nucleophilic addition and subsequent cyclization of intramolecule at room temperature in aqueous solution. The advantages of the novel protocol are the mild reaction condition, free organic solvent, simple final treatment, easy isolation of products and excellent yields.
文摘目的总结外固定支架针位护理最佳证据,为临床护理实践提供参考。方法基于“6S”证据资源金字塔模型,系统检索JBI循证卫生保健中心数据库、BMJ Best Practice、PubMed、Cochrane Library、UpToDate、NICE、医脉通、中国知网、万方知识数据服务平台等数据库中与外固定支架针位护理相关的所有文献,文献类型包括指南、系统评价、专家共识、证据总结、随机对照试验等。检索时限为建库至2022年12月31日。由课题组成员根据相关文献质量评价标准独立进行质量评价,并结合专业判断对最终纳入文献进行提取整合、证据级别评定及汇总。结果共纳入文献13篇,并汇总13条证据,包括6个方面:外固定支架针位清洗液的选择、护理频次、敷料的选择、针道结痂的管理、是否按摩/按压针道位置及洗浴。结论该研究总结了外固定支架针位护理的最佳证据,建议临床医务人员结合临床实际选择性应用最佳证据,减少并发症的发生,改善患者结局。
文摘Major economies in the world have raised various proposals to reduce carbon emissions by applying clean energies in a bid to tackle climate change. As a major consumer of coal, China is facing mounting pressure, and experts are wrangling about which clean energy should come first on the government agenda. To get a closer look at the current situation in China, Beijing Review reporter Liu Yunyun sat down with Zhou Dadi, Director General Emeritus of the Energy Research Institute of the National Development and Reform Commission, who shared his insights on clean energy. Edited excerpts follow:
