Publications by authors named "Yangyong Li"

To investigate the seasonal variation, health risks, and potential sources of polycyclic aromatic hydrocarbons(PAHs) in PM in the Lüliang area, PM samples were collected in Lishi District(downtown area) and Xiaoyi City(suburban area) from October 23, 2018 to July 1, 2019, and the concentrations of 14 PAHs were determined using gas chromatography-mass spectrometry(GC-MS). The annual average concentration of PAHs was 95.50 ng·m, and the concentration of 5-6 ring PAHs was mainly(49.

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Coking plants in China generate a substantial amount of volatile organic compounds (VOCs). The emission factors (EFs) of VOCs from coking plants are not well known, and thus, this study characterized the VOCs in the emissions from four coking plants in Shanxi, China. The EFs of VOCs from different stages of the coking process were calculated, and coal charging exhibited the highest EFs of VOCs, followed by the flue gases from combustion of coke oven gas, wastewater treatment, coke pushing and chemical byproduct recycling.

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Seasonal atmospheric particulate matter samples with different particle sizes (< 2.5 μm [PM], 2.5-5 μm [PM], 5-10 μm [PM], and 10-100 μm [PM]) were collected to analyze the mass concentration and distribution characteristics of nine water-soluble ions (WSIs; F, Cl, NO, SO, Na, NH, K, Mg, and Ca) in Lvliang in China.

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The femoral artery is the conventional access for endovascular abdominal aortic aneurysm repair (EVAR). Patients with an anomalous persistent sciatic artery (PSA) is usually at the expense of an atrophied femoral artery. Therefore, EVAR for patients with PSA anomalies is exceptionally challenging.

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In order to investigate the pollution characteristics and sources of elements in PM in the Shanxi University Town in 2017, an energy dispersive X-ray fluorescence spectrometer (ED-XRF) was used to analyze 21 kinds of elements in PM samples. A health risk assessment was conducted for Mn, Zn, Cu, Sb, Pb, Cr, Co, and Ni. The main sources of elements were identified by the principal component analysis (PCA) and positive matrix factorization (PMF).

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Coking is a substantial source of carbonaceous aerosols in China, but the emission characteristics and pollution levels of coking-produced organic carbon (OC) and elemental carbon (EC) remain unknown, causing considerable uncertainty in emission estimates. In this study, the emission factors of OC (EF) and EC (EF) of typical coking plants in Shanxi, China, were measured. The measured EF and EF from fugitive emissions (7.

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To report the results of a network meta-analysis of randomized controlled trials (RCTs) comparing multiple endovascular treatments for de novo femoropopliteal lesions. The MEDLINE, EMBASE, and the Cochrane Central Register of Controlled Trials databases were systematically searched on June 1, 2019, for prospective RCTs comparing 14 treatments [ie, atherectomy, brachytherapy, cryoplasty, cutting balloons, drug-coated balloons, bare nitinol stents, drug-eluting stents (DES), covered stents (CS), and combinations] in the treatment of de novo femoropopliteal lesions. Outcomes were technical success; binary restenosis and target lesion revascularization (TLR) at 6, 12, and/or 24 months; and all-cause mortality at 12 months.

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Purpose: We conducted a network meta-analysis of randomized controlled trials comparing the efficacy and safety of multiple endovascular treatments for femoropopliteal lesions.

Methods: Nine treatments for femoropopliteal lesions were identified. We compared major amputation and all-cause mortality at 12-month follow-ups and primary patency at 6-, 12- and 24-month follow-ups of the treatments.

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Background: We aimed to conduct a network meta-analysis of randomized controlled trials comparing treatment modalities for infrapopliteal lesions in critical limb ischemia.

Methods: Five treatments for infrapopliteal lesions in critical limb ischemia were recognized. We compared primary patency, target lesion revascularization (TLR), major amputation at the 12-month follow-up, and technical success rate of the treatment modalities.

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