Lifeng Yuan
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View article: Analysis of the identification of solid waste characteristics of several batches of imported polyvinyl chloride products
Analysis of the identification of solid waste characteristics of several batches of imported polyvinyl chloride products Open
Several batches of products based on polyvinyl chloride imported from Ningbo port in recent years were identified as solid waste by micro infrared spectroscopy, X-ray diffraction, and inductively coupled plasma mass spectrometry. Many batc…
View article: Analysis of volatile aroma components in tobacco by gas chromatography-mass spectrometry coupled with headspace solid phase microextraction
Analysis of volatile aroma components in tobacco by gas chromatography-mass spectrometry coupled with headspace solid phase microextraction Open
Volatile flavor compounds play vital roles when evaluating the flavor and quality of tobacco products. Pretreatment is always required owing to the wide range of flavor compounds and the complexity of the tobacco matrix. Solvent extraction…
View article: A Spatial Baseline of China's Blue Carbon Stocks for Improved Monitoring, Management, and Protection
A Spatial Baseline of China's Blue Carbon Stocks for Improved Monitoring, Management, and Protection Open
Blue carbon ecosystems (BCEs) exhibit remarkable capacities for organic carbon (C) storage, making them a promising nature‐based climate solution. However, the lack of robust, spatially explicit estimates of C stocks in BCEs presents a maj…
View article: Spatial distribution characteristics of Tibetan Buddhism principal-subordinate monastery systems in the Hehuang region
Spatial distribution characteristics of Tibetan Buddhism principal-subordinate monastery systems in the Hehuang region Open
Tibetan Buddhist monasteries constitute significant cultural heritages of ethnic minorities, evolving into the Principal-Subordinate Monastery System (PSMS) with profound historical and cultural significance. This system exhibits an integr…
View article: Quantitative analysis of pA66/PA6 blend by pyrolysis gas chromatography-mass spectrometry
Quantitative analysis of pA66/PA6 blend by pyrolysis gas chromatography-mass spectrometry Open
A pyrolysis gas chromatography-mass spectrometry method using correction factor area normalization was applied for quantitative analysis of the PA66/PA6 blend ratio. The PA66/PA6 blend sample with known proportions was prepared. The pyro g…
View article: Carbon Offsetting-Driven Multi-Actor Low-Carbon Collaborative Evolutionary Game Analysis
Carbon Offsetting-Driven Multi-Actor Low-Carbon Collaborative Evolutionary Game Analysis Open
The proactive strategic choice for low-carbon collaboration among various sectors of society is to promote low-carbon transformation of the industrial chain through carbon offsetting. This study delves into the strategy selection and game …
View article: Analysis of Microplastics in Aquatic Shellfish by Pyrolysis–Gas Chromatography/Mass Spectrometry after Alkali Digestion and Solvent Extraction
Analysis of Microplastics in Aquatic Shellfish by Pyrolysis–Gas Chromatography/Mass Spectrometry after Alkali Digestion and Solvent Extraction Open
Microplastics are harmful to both marine life and humans. Herein, a pyrolysis–gas chromatography–mass spectrometry (Py-GC/MS) technique for the detection of microplastics in aquatic shellfish is demonstrated. The organic matter in aquatic …
View article: Evaluating Monthly Flow Prediction Based on SWAT and Support Vector Regression Coupled with Discrete Wavelet Transform
Evaluating Monthly Flow Prediction Based on SWAT and Support Vector Regression Coupled with Discrete Wavelet Transform Open
Reliable and accurate streamflow prediction plays a critical role in watershed water resources planning and management. We developed a new hybrid SWAT-WSVR model based on 12 hydrological sites in the Illinois River watershed (IRW), U.S., t…
View article: Analysis on the Development Situation of Geo-Hazards Based on Statistical Methods in Mainland China in Recent Years
Analysis on the Development Situation of Geo-Hazards Based on Statistical Methods in Mainland China in Recent Years Open
In recent years, many geo-hazards were triggered by the frequent occurrences of sudden and regional extreme heavy rainfall, earthquake events, and human society and economic activities during urbanization, for example, the development of u…
View article: Research on Food System Evaluation Model Based on TOPSIS Improved Analytic Hierarchy Process
Research on Food System Evaluation Model Based on TOPSIS Improved Analytic Hierarchy Process Open
At present, the shortcomings of the current global food system which focuses on efficiency and profitability have brought about enormous perplexity. Together with its instability, social problems related to the environment, livelihoods or …
View article: Enhanced streamflow prediction with SWAT using support vector regression for spatial calibration: A case study in the Illinois River watershed, U.S.
Enhanced streamflow prediction with SWAT using support vector regression for spatial calibration: A case study in the Illinois River watershed, U.S. Open
Accurate streamflow prediction plays a pivotal role in hydraulic project design, nonpoint source pollution estimation, and water resources planning and management. However, the highly non-linear relationship between rainfall and runoff mak…
View article: Review of Watershed-Scale Water Quality and Nonpoint Source Pollution Models
Review of Watershed-Scale Water Quality and Nonpoint Source Pollution Models Open
Watershed-scale nonpoint source (NPS) pollution models have become important tools to understand, evaluate, and predict the negative impacts of NPS pollution on water quality. Today, there are many NPS models available for users. However, …
View article: Using SWAT to Evaluate Streamflow and Lake Sediment Loading in the Xinjiang River Basin with Limited Data
Using SWAT to Evaluate Streamflow and Lake Sediment Loading in the Xinjiang River Basin with Limited Data Open
Soil erosion and lake sediment loading are primary concerns of watershed managers around the world. In the Xinjiang River Basin of China, severe soil erosion occurs primarily during monsoon periods, resulting in sediment flow into Poyang L…
View article: Spatio-Temporal Variation Analysis of Precipitation during 1960-2008 in the Poyang Lake Basin, China
Spatio-Temporal Variation Analysis of Precipitation during 1960-2008 in the Poyang Lake Basin, China Open
Long-term monthly precipitation data from 1960 to 2008 at 17 rain stations are analyzed to explore spatio-temporal variation of the seasonal and annual precipitation in the Poyang Lake basin, China, using anomaly analysis, simple linear re…