Yu Lan

Oct 17, 2024 | digitalcommons.library.tmc.edu | Hong Zhu |Yu Lan |Jing Ning |Yu Shen

AbstractSemi-competing risks data often arise in medical studies where the terminal event (e.g., death) censors the non-terminal event (e.g., cancer recurrence), but the non-terminal event does not prevent the subsequent occurrence of the terminal event. This article considers regression modeling of semi-competing risks data to assess the covariate effects on the respective non-terminal and terminal event times.

Oct 17, 2024 | eng.chinamil.com.cn | Yu Lan |Chen Zhuo

By Yu LanNATO kicked off its large-scale nuclear exercise "Steadfast Noon" in northern Europe on Monday, with 2,000 soldiers and 60 aircraft from 13 NATO countries participating in the exercise. NATO Secretary General Mark Rutte said, "Steadfast Noon sends a clear message to any adversary that NATO will protect and defend all Allies."This year's exercise, hosted by Belgium and the Netherlands, involves participants simulating missions in which fighter jets carry US nuclear warheads.

Oct 14, 2024 | nature.com | Yu Lan

AbstractThe combination of Josiphos-type ligands with Pd catalysts has been instrumental in the rapid development of efficient catalytic processes. We performed density functional theory (DFT) calculations to elucidate the mechanisms and dynamic conformational changes responsible for the reactivity and selectivity observed in Pd-catalysed bicyclization/carbonylation of 1,6-enynes.

Jul 9, 2024 | eng.chinamil.com.cn | Yu Lan |Li Jiayao

By Yu LanAmerica's deployment of medium and short-range missiles in the Asia Pacific and Europe has put Russia and other countries on high alert. Moscow has repeatedly warned that if the US deployed land-based medium and short-range missiles in the Asia Pacific and Europe, it would maintain the right to unilaterally suspend the Intermediate-Range Nuclear Forces (INF) Treaty.

May 28, 2024 | nature.com | Shihan Liu |Yujie Wang |Yu Lan

AbstractAsymmetric catalysis allows the synthesis of optically active compounds, often requiring the differentiation between two substituents on prochiral substrates1. Despite decades of development of mainly noble metal catalysts, achieving differentiation between substituents with similar steric and electronic properties remains a significant challenge2,3.