春雨里 - 吴青峰, 李宇春

2019年深秋，我背起行囊，第一次离开家乡，踏上前往俄罗斯的旅程。飞机穿越云层的那一刻，我看着窗外陌生的天际线，心中五味杂陈。既有对未知生活和学习的忐忑，也藏着跃跃欲试的兴奋与期待。那是我人生中第一次真正意义上的远行，带着青春的执念，也带着对成长的渴望。

As it is well known, the Minkowski vacuum appears thermally populated to a quantum mechanical detector on a uniformly accelerating course. We investigate how this thermal radiation may contribute to the classical nature of the detector's trajectory through the criteria of decoherence. An uncertainty-type relation is obtained for the detector involving the fluctuation in temperature, the time of flight and the coupling to the bath.

齐格勒-纳塔催化剂在聚丙烯生产中至关重要，其活性中心结构与分布显著影响聚丙烯性能。文中深入剖析活性中心对聚丙烯微观结构（如等规度、分子量及分布、支化度）、结晶性能、热性能及机械性能的影响机制，并探讨活性中心的调控策略，为优化聚丙烯性能、开发新型催化剂及聚合工艺提供理论支撑。

We present an exact field theoretical representation of the statistical mechanics of simple classical liquids with short-ranged pairwise additive interactions. The action of the field theory is obtained by performing a Hubbard-Stratonovich transformation of the configurational Boltzmann factor. The mean field and Gaussian approximations of the theory are derived and applications to the liquid-vapour transition considered.