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    Enhancement of state response capability and famine mitigation: a comparative analysis of two drought events in northern China during the Ming dynasty by F. Tian, F. Tian, Y. Su, Y. Su, X. Chen, X. Chen, L. Tao, L. Tao

    Published 2025-02-01
    “…The stronger finance and economy during the Wanli drought enabled more robust relief efforts, resulting in lower famine severity. (3) Famine response capabilities varied regionally. Shandong, Beijing, Tianjin, and Hebei demonstrated strong defensive capabilities and effective state emergency responses, while Shanxi had weaker defensive abilities, making it more vulnerable to famine. …”
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    Mortality risk prediction model in AIDS patients with pneumocystis pneumonia in China by Xi Wang, Letian Liu, Wen Wang, Yang Zhang, Hui Chen, Zhangli Wang, Jianwei Li, Yue Gao, Yanqun Huang, Lijun Sun, Tong Zhang, Aixin Li

    Published 2025-02-01
    “…We aimed to develop a risk model for the near-term prognosis of people with HIV/AIDS and PCP and verify its effectiveness.MethodsThis single-center, retrospective observational study was conducted at Beijing Youan Hospital from January 2012 to October 2022. 972 AIDS patients with Pneumocystis pneumonia met our criteria were recruited. …”
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    Flowering characteristics and breeding system of Deutzia parviflora by WANG Qi, LI Jinyu, WANG Xinyi, WANG Yixuan, GUO Wei, YUAN Tao

    Published 2025-01-01
    “…[Results] (1) D . parviflora began to bloom in late April and ended in mid-May in Beijing. Its flowering type is concentrated flowering, with a group flowering period of 22-23 d and a single flowering period of 8 d, which can be divided into 8 stages. (2) The stigma acceptability at the petal flattening stage was the strongest, and the pollen viability at the stamen expansion stage was the highest. (3) The optimal medium for pollen viability determination was: 100.0 g/L sucrose + 0.3 g/L H3BO3 + 0.2 g/L CaCl2. (4) Pollen can be dried and stored in the short term (within 10 d), at -20 ℃ and -80 ℃ in the medium term (10-30 d), and at -80 ℃ for a long time (more than 30 d). (5) The pollen-ovule ratio of D . parviflora was 23 695.93, the out-crossing index was 3, the fruit setting rate of xenogamy was the highest. …”
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