Qichen Liu
Peking University
8 Papers
18 Citations
Qichen Liu is an academic researcher from Peking University. The author has contributed to research in topics: Years of potential life lost & Ambulatory care. The author has an hindex of 6, co-authored 7 publications.
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Papers
The burden of ischemic heart disease related to ambient air pollution exposure in a coastal city in South China.
Jing Huang,Guoxing Li,Xujun Qian,Guozhang Xu,Yan Zhao,Jian Huang,Qichen Liu,Tianfeng He,Xinbiao Guo +8 more
TL;DR: Using the indicator of years of life lost, considering the occurrence of death at different ages, provided more information for resource allocation and protection of vulnerable populations and highlighted the importance of stringent air pollution control, especially for gaseous pollutants.
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The short term burden of ambient fine particulate matter on chronic obstructive pulmonary disease in Ningbo, China.
Guoxing Li,Jing Huang,Guozhang Xu,Xiaochuan Pan,Xujun Qian,Jiaying Xu,Yan Zhao,Tao Zhang,Qichen Liu,Xinbiao Guo,Tianfeng He +10 more
TL;DR: The effects of PM2.5 on YLL due to COPD showed a non-linear pattern, with relatively steep at low levels and flattened out at higher exposures, and were significantly higher in the elderly than those in the younger.
Temporal variation in associations between temperature and years of life lost in a southern China city with typical subtropical climate.
Guoxing Li,Jing Huang,Guozhang Xu,Xiaochuan Pan,Xujun Qian,Jiaying Xu,Yan Zhao,Tao Zhang,Qichen Liu,Xinbiao Guo,Tianfeng He +10 more
TL;DR: In this paper, the authors explored temporal variation in the associations between temperature and YLL before and after 2013 heat waves (period I: Jan 2008 to Sep 2013, period II: Oct 2013 to Dec 2015) in Ningbo, a southern China city with typical subtropical climate.
Efficiency of Emission Control Measures on Particulate Matter-Related Health Impacts and Economic Cost during the 2014 Asia-Pacific Economic Cooperation Meeting in Beijing
TL;DR: The emission control measures were effective in improving short term air quality and reducing health risks and medical expenses during 2014 APEC, but more efforts is needed for long term and continuous air quality improvement and health protection.
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Load rate evaluation and optimization technology of motor for pumping well
Bin Yao,Yan Zhao,Qichen Liu,Mengyao Xu,Ziming Feng +4 more
- 10 Nov 2022
TL;DR: Aiming at the problem of low efficiency of pumping wells in the later stage of high water cut development of the oil field, the reasonable allocation method of motors was studied in this paper , and the reasonable matching technology of pumping well motor further improved the energy-saving theory of pumping unit lifting technology.