Search Results - "Qingfeng Li"

Maternal deaths averted by contraceptive use: an analysis of 172 countries by Ahmed, Saifuddin, Dr, Li, Qingfeng, MA, Liu, Li, PhD, Tsui, Amy O, Prof

“…Summary Background Family planning is one of the four pillars of the Safe Motherhood Initiative to reduce maternal death in developing countries. We aimed to…”
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Accessing the in-medium effects on nucleon-nucleon elastic cross section with collective flows and nuclear stopping by Li, Pengcheng, Wang, Yongjia, Li, Qingfeng, Zhang, Hongfei

“…A systematic study of the in-medium correction factor (F) on nucleon-nucleon elastic cross section is performed within the Ultra-relativistic Quantum Molecular…”
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The isospin dependent nucleon–nucleon inelastic cross section in the nuclear medium by Li, Qingfeng, Li, Zhuxia

“…The calculation of the energy-, density-, and isospin-dependent Δ production cross sections in nucleon–nucleon (NN) scattering σNN→NΔ⁎ has been performed…”
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Hollow Spheres of Iron Carbide Nanoparticles Encased in Graphitic Layers as Oxygen Reduction Catalysts by Hu, Yang, Jensen, Jens Oluf, Zhang, Wei, Cleemann, Lars N., Xing, Wei, Bjerrum, Niels J., Li, Qingfeng

“…Nonprecious metal catalysts for the oxygen reduction reaction are the ultimate materials and the foremost subject for low‐temperature fuel cells. A novel type…”
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Optimizing global COVID-19 vaccine allocation: An agent-based computational model of 148 countries by Li, Qingfeng, Huang, Yajing

“…Based on the principles of equity and effectiveness, the World Health Organization and COVAX formulate vaccine allocation as a mathematical optimization…”
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Towards highly efficient electrochemical CO2 reduction: Cell designs, membranes and electrocatalysts by Tufa, Ramato Ashu, Chanda, Debabrata, Ma, Ming, Aili, David, Demissie, Taye Beyene, Vaes, Jan, Li, Qingfeng, Liu, Shanhu, Pant, Deepak

“…[Display omitted] •Electrochemical CO2 reduction provide great opportunity to store renewable energy.•Progress on cell design, membrane, catalyst for CO2…”
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Elliptic flow in heavy-ion collisions at intermediate energy: The role of impact parameter, mean field potential, and collision term by Gao, Bo, Wang, Yongjia, Gao, Zepeng, Li, Qingfeng

“…Within the ultrarelativistic quantum molecular dynamics (UrQMD) model, by reversely tracing nucleons that are finally emitted at mid-rapidity (|y0| < 0.1) in…”
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Epidemiological characteristics and clinical features of 32 critical and 67 noncritical cases of COVID-19 in Chengdu by Zheng, Yongli, Xu, Hong, Yang, Ming, Zeng, Yilan, Chen, Hong, Liu, Ru, Li, Qingfeng, Zhang, Na, Wang, Dan

“…•Emerging Infectious Diseases, COVID-19.•This study included a retrospective, single-center case series of 99 consecutively hospitalized patients with…”
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Dual cross-linked polymer electrolyte membranes based on poly(aryl ether ketone) and poly(styrene-vinylimidazole-divinylbenzene) for high temperature proton exchange membrane fuel cells by Yang, Jingshuai, Jiang, Haoxing, Wang, Jin, Xu, Yixin, Pan, Chao, Li, Qingfeng, He, Ronghuan

“…One critical issue to phosphoric acid (PA) doped high-temperature proton exchange membranes (HT-PEMs) is to balance the proton conductivity and mechanical…”
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Experimental investigation of the dynamic response of prestressed rockbolt by using an SHPB-based rockbolt test system by Wu, Qiuhong, Li, Xibing, Weng, Lei, Li, Qingfeng, Zhu, Yongjian, Luo, Rong

“…•A new device was developed to investigate the dynamic response of pre-stressed rock bolt.•The effect of the pre-stress on the dynamic response of the rock…”
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Finding signatures of the nuclear symmetry energy in heavy-ion collisions with deep learning by Wang, Yongjia, Li, Fupeng, Li, Qingfeng, Lü, Hongliang, Zhou, Kai

“…A deep convolutional neural network (CNN) is developed to study symmetry energy (Esym(ρ)) effects by learning the mapping between the symmetry energy and the…”
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Decoding the nuclear symmetry energy event-by-event in heavy-ion collisions with machine learning by Wang, Yongjia, Gao, Zepeng, Lü, Hongliang, Li, Qingfeng

“…Inferences of the nuclear symmetry energy from heavy-ion collisions are currently based on the comparison of measured observables and transport model…”
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Study on the failure law of surrounding rock in inclined coal seam with gob side entry by Wu, Hao, Li, Qingfeng, Zhu, Chuanqu, He, Liao

“…Aiming at the problem of stability control of surrounding rock in the process of upward mining of inclined coal seam gob-side entry retaining, the gob-side…”
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Statistical estimation of fatal and serious injuries saved by iRAP protocols in 74 countries by Li, Qingfeng, Bradford, James, Bachani, Abdulgafoor M

“…Road traffic crashes cause 1.19 million deaths and millions more injuries annually. The persistently high burden has drawn attention from national and…”
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High temperature proton exchange membranes based on polybenzimidazoles for fuel cells by Li, Qingfeng, Jensen, Jens Oluf, Savinell, Robert F., Bjerrum, Niels J.

“…To achieve high temperature operation of proton exchange membrane fuel cells (PEMFC), preferably under ambient pressure, acid–base polymer membranes represent…”
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Metal–organic frameworks-derived honeycomb-like Co3O4/three-dimensional graphene networks/Ni foam hybrid as a binder-free electrode for supercapacitors by Deng, Xiaoyang, Li, Jiajun, Zhu, Shan, He, Fang, He, Chunnian, Liu, Enzuo, Shi, Chunsheng, Li, Qingfeng, Zhao, Naiqin

“…The honeycomb-like porous Co3O4 grown on three dimensional graphene networks/nickel foam (3DGN/NF) has been successfully prepared by a facile solution growth…”
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Study of the nuclear symmetry energy from the rapidity-dependent elliptic flow in heavy-ion collisions around 1 GeV/nucleon regime by Wang, Yongjia, Li, Qingfeng, Leifels, Yvonne, Le Fèvre, Arnaud

“…The elliptic flow ratio of neutrons versus protons in heavy-ion collisions (HICs) is one of the important probes to constrain the nuclear symmetry energy,…”
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Low Pt loading for high-performance fuel cell electrodes enabled by hydrogen-bonding microporous polymer binders by Tang, Hongying, Geng, Kang, Aili, David, Ju, Qing, Pan, Ji, Chao, Ge, Yin, Xi, Guo, Xiang, Li, Qingfeng, Li, Nanwen

“…A key challenge for fuel cells based on phosphoric acid doped polybenzimidazole membranes is the high Pt loading, which is required due to the low electrode…”
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A systematic review and meta-analysis comparing combined intravenous and topical tranexamic acid with intravenous administration alone in THA by Sun, Yangbai, Jiang, Chaoyin, Li, Qingfeng

“…To compare the effectiveness and safety of combined intravenous and topical tranexamic acid with intravenous use alone in THA. The electronic databases…”
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Administration of a combination of COX-2/TGF-β1 siRNAs induces hypertrophic scar fibroblast apoptosis through a TP53 mediated caspase pathway by Fu, Rao, Zhou, Sizheng, Liu, Chuanqi, Zhou, Jia, Li, Qingfeng

“…Hypertrophic scar (HTS) formation is a pathological fibrotic skin disease, with no satisfactory treatments available currently. Inducing apoptosis of…”
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