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    War and negotiations. How Vietnam defeated the American Colossus by A. M. Vasiliev

    Published 2020-07-01
    “…To achieve this goal the war and negotiations dragged on for years, and on the eve of the signing of the agreements, the most fierce bombing of the DRV was carried out.Thanks to the powerful air defense created with the help of the USSR, the DRV won the “air Dien Bien Fu”.The United States was forced to sign a peace agreement, which provided for the complete cessation of all US military operations in Vietnam, the withdrawal of all American troops, but left the North Vietnamese forces in South Vietnam together with the armed forces of the National Liberation Front along with the decaying and doomed to death Saigon regime. …”
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    High-resolution observation per 1.5 h revealed prominent time-dependent daily contamination variations of p-phenylenediamine (PPD) antioxidants and their quinone derivatives PPDQs... by Zifang Peng, Shijiao Hou, Qingyun He, Fangcheng Su, Lishun Ren, Congcong Pei, Dan Yin, Yanhao Zhang, Yanjie Huang, Shusheng Zhang, Zongwei Cai

    Published 2025-01-01
    “…In this work, an innovative study was conducted to investigate their precise daily pollution characteristics and health risks based on high-resolution collected PM2.5 samples every 1.5 hours in one week in Zhengzhou, a megacity continuously suffers from serious air contamination in central China. The composition patterns and sources of PPDs and PPDQs were discovered and more serious contamination of them were both found at the day-time (07:00–19:00). …”
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