Article
Soil Science
John Tatarko, Matthew Kucharski, Hongli Li, Huiru Li
Summary: The study found that clay content in soil affects the coefficient of aggregate breakage, while soil texture or organic matter content showed no clear relationship with fine dust emissions generated from breakage. Soil management practices also have an impact on suspended flux from broken aggregates during saltation.
SOIL & TILLAGE RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Xinru Wang, Liang Xia, Fei Pei, Li Chang, Wen Tong Chong, Zu Wang, Song Pan
Summary: This paper focuses on studying the characteristics of PM2.5 and PM10 at transfer stations, which is an area lacking research. The study finds that the concentrations of PM2.5 and PM10 on the platform in transfer stations are slightly lower than non-transfer stations, but the ratio of PM2.5 to PM10 is higher, indicating a difference in PM10 content. Additionally, the concentration of PM2.5 at subway stations has a strong correlation with the outside environment.
Article
Multidisciplinary Sciences
Zhanfei Ma, Wenli Luo, Jing Jiang, Bisheng Wang, Ziyuan Ma, Jixiang Lin, Dongxiang Liu
Summary: This paper proposes a novel spatiotemporal prediction model called ST-Informer for forecasting PM2.5 concentrations. The model captures complex dynamic spatiotemporal correlations and important contextual information through parallel computation and an independent spatiotemporal embedding layer. Experimental results show that the ST-Informer model performs well in capturing peaks and sudden changes in PM2.5 concentrations and has better prediction performance compared to current models.
Article
Agronomy
Xue Han, Chunping Chang, Zhongling Guo, Shuiqing Yin, Jifeng Li, Huiru Li, Rende Wang, Qing Li
Summary: This study evaluated several deterministic wind speed simulation models using observed hourly wind speed data from 191 climate stations in arid and semi-arid areas of China. The Guo (1/7c), Guo (1/2), and WINDGEN models performed the best, but all models tended to underestimate wind speeds. Calibrating the parameters of the Guo (1/7c) and Guo (1/2) models significantly improved the accuracy of wind erosion modeling.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Engineering, Electrical & Electronic
Yu Huang, Zongshi Zhang, Xuxin Li, Jiale Xie, Kwang Y. Lee
Summary: This article proposes a layered-vine copula-based method for wind speed prediction, considering the spatial correlations between wind turbines and meteorological information. By extracting spatial correlations and developing a conditional quantile regression model, the multidimensional dependence of wind speed is predicted. The prediction accuracy is further improved by establishing a regression model for prediction correction.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Thermodynamics
Chun-yi Yao, Zheng Zhang, Bo-lun Zhang, Hui-ren Zhu
Summary: The experiment showed that the mass flow ratio significantly affects the heat transfer coefficient on the entire vane surface, increased turbulence intensity enhances the heat transfer coefficient on the suction side and the rear half of the pressure side, higher Reynolds number results in an increase in Nusselt number, and heavier coolant leads to a slight reduction in heat transfer coefficient.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Guangzheng Yu, Chengquan Liu, Bo Tang, Rusi Chen, Liu Lu, Chaoyue Cui, Yue Hu, Lingxu Shen, S. M. Muyeen
Summary: This study proposes a method of regional wind power prediction using spatiotemporally multiple clustering algorithm and hybrid neural network. The study identifies spatially correlative wind power plants using a long-term daily power curve similarity method, and dynamically recognizes spatio-temporal wind farm sub-clusters based on the similar fluctuation trend of short-term power sequences. By establishing a spatial-temporal integrated prediction model, this method effectively improves accuracy.
Article
Engineering, Electrical & Electronic
Xiaoling Sheng, Shuting Wan, Xuchao Han, Yuling He, Xuan Wang
Summary: This study investigates the impact of wind speed variation on the fault characteristics of wind turbines and introduces a new equivalent wind speed model. Simulations and experiments validate the theoretical analysis and reveal that wind speed distribution is correlated with fault characteristics. These findings contribute to the improvement of fault diagnosis for doubly fed induction generators.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Meteorology & Atmospheric Sciences
Zhigang Li, Xin Yang, Chuanfeng Zhao, Tianyi Fan
Summary: The study found that PM2.5/PM10 ratios in Beijing have decreased over the past five years, with the most noticeable decrease in high ratio frequency during winter, related to air pollution control policies. High PM2.5/PM10 ratios in Beijing are closely linked to heavy pollution levels, low wind speeds, and anthropogenic pollution transported from the south.
ASIA-PACIFIC JOURNAL OF ATMOSPHERIC SCIENCES
(2021)
Article
Mathematics
Necla Gunduz, Sule Karakoc
Summary: This research conducts a comparative analysis of seven bandwidth calculation techniques, finding that the BCV method provides the closest result to the optimal bandwidth for normal distributions, while the SCV method is suited for real-world wind speed data.
Article
Multidisciplinary Sciences
Sasan Faridi, Reza Bayat, Aaron J. Cohen, Ensieh Sharafkhani, Jeffrey R. Brook, Sadegh Niazi, Mansour Shamsipour, Heresh Amini, Kazem Naddafi, Mohammad Sadegh Hassanvand
Summary: The study revealed that long-term exposure to PM2.5 air pollution in Iran in 2018 led to deaths in adults, with different death rates and economic losses observed based on ground-monitored and satellite-based data.
SCIENTIFIC REPORTS
(2022)
Article
Environmental Sciences
Lorenz Harr, Tim Sinsel, Helge Simon, Jan Esper
Summary: PM2.5 concentrations in urban areas vary greatly spatially and seasonally. Using low-cost sensors, this study identified hotspot areas and differentiated particle sources based on ratios. The results showed that hotspots were mainly located in pedestrian and park areas during fall, while construction sites and bridges with high traffic intensity were prominent hotspots in spring.
Article
Environmental Sciences
Yuanyuan Wei, Zhengqiang Li, Ying Zhang, Cheng Chen, Yisong Xie, Yang Lv, Oleg Dubovik
Summary: The article introduces a physically based remote sensing method for PM10, utilizing new semi-empirical physical models to address the challenge of deriving PM10 from satellite measurements. A good correlation and consistency are achieved through comparison with in-situ PM10 measurements.
REMOTE SENSING OF ENVIRONMENT
(2021)
Article
Thermodynamics
Long Ma, Ling Huang, Huifeng Shi
Summary: The study proposes a novel spatial-temporal generative autoencoder (STGAE) model to capture the probability distribution of wind turbines on an arbitrary graph structure, improving the reliability and accuracy of wind speed prediction.
Article
Multidisciplinary Sciences
Anuttara Hongthong, Kampol Nanthapong, Thongchai Kanabkaew
Summary: This study estimated the emissions of PM10 and PM2.5 caused by biomass burning in Northern Thailand from 2012 to 2016. The results showed that Mae Hong Son, Chiang Mai, and Chiang Rai had the highest proportion of forest fires, savanna and grassland fires, and agricultural fires, respectively. The study also found differences in emission ratios between the current study and GFED4, and suggested the use of VIIRS fire count for finer estimation of biomass burning emissions.
Article
Environmental Sciences
Li Zhang, Zhongling Guo, Jifeng Li, Chunping Chang, Rende Wang, Qing Li
Summary: This study assessed the impact of different types of wind data on regional wind erosion estimation in the Agro-Pastoral Ecotone of Northern China. The results showed that wind speed is the most sensitive input factor and can significantly affect the prediction of wind erosion events. The study highlights the importance of calibrating and validating models for precise wind erosion prediction and suggests that previous studies on wind erosion-related issues may have been influenced by different types of wind data used in regional modeling.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Agronomy
Xiaoxu Wu, Zhiyi Guo, Rende Wang, Peipei Fan, Hongxu Xiang, Xueyong Zou, Jie Yin, Hui Fang
Summary: This study systematically explored the optimal configuration of combined wind fences, and found that the combined wind fence had higher shelter efficiency and the artificially planted windbreaks were more effective. The results of this study are of great importance for practical sand control engineering.
AGRICULTURAL AND FOREST METEOROLOGY
(2022)
Article
Optics
Rende Wang, Lijun Xu, Ang Huang, Zhang Cao
Summary: A novel method for simultaneous telemetry of temperature and vibration parameters using laser dispersion spectroscopy is proposed in this study. The temperature is extracted from the peak-to-peak ratio of absorption spectra, while the vibration amplitude and frequency are derived from the time-varying baselines. A telemetry sensor is designed and evaluated, showing good agreement with reference measurements and improved signal-to-noise ratio compared to classical direct laser absorption spectroscopy (DLAS).
Article
Environmental Sciences
Jun Liu, Xuyang Wang, Li Zhang, Zhongling Guo, Chunping Chang, Heqiang Du, Haibing Wang, Rende Wang, Jifeng Li, Qing Li
Summary: Wind erosion is crucial for assessing regional ecosystem services and sustainable development. This study evaluated the potential wind erosion in the Agro-Pastoral Ecotone of northern China using multiple wind erosion models. The results indicated that the predicted values were significantly related to the observed values, although the observed values were generally smaller. Wind speed, soil moisture, and vegetation coverage were identified as the dominant factors affecting wind erosion estimation.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Geosciences, Multidisciplinary
Guoru Wei, Chunlai Zhang, Qing Li, Hongtao Wang, Rende Wang, Yajing Zhang, Yixiao Yuan
Summary: Northern China has 12 main deserts that can be divided into western, central, and eastern deserts. Physical weathering is more prominent in the western and central deserts, while chemical weathering is more prominent in the eastern deserts. Most major trace elements are more depleted in the eastern deserts compared to the western deserts, but moderately depleted in the central deserts. The potential source rocks of the central and western deserts are composed of intermediate igneous rocks, while the sediments in the eastern deserts are derived from the mixing of different types of rocks.
Article
Automation & Control Systems
Mingyuan Liu, Ping Su, Jianshe Ma, Mali Gong, Rende Wang
Summary: This article introduces a three-degrees of freedom nanoscale microsuspension actuator that improves the performance of optical storage systems and provides theoretical guidance and design methods.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Environmental Sciences
Meiniu Yang, Xia Tian, Zhongling Guo, Chunping Chang, Jifeng Li, Zixiao Guo, Huiru Li, Ruijuan Liu, Rende Wang, Qing Li, Xueyong Zou
Summary: This study examined the distribution and migration of microplastics (MPs) in a semi-arid region of northern China, focusing on film mulching farmland and downwind nearby grassland. The findings revealed a decreasing trend of MP abundances with increasing downwind distance. The size distribution of MPs showed similar sigmoid trends at different distances, with larger MPs found in farmlands and smaller MPs in grasslands. The migration of MPs from farmlands poses a potential threat to downwind landscapes, making the downwind grassland a potential source of MP emissions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Xiujing Lin, Shiyuan Xu, Yuqi Tong, Xinshuang Liu, Zeyu Liu, Pan Li, Ruiqing Liu, Xiaomiao Feng, Li Shi, Yanwen Ma
Summary: The implementation of high-safety Li metal batteries (LMBs) requires stable and safe electrolytes. Solid-state electrolytes (SSEs) are considered advantageous due to their properties; however, they suffer from low stability at the Li/electrolyte interface and uncontrolled Li dendrites growth, causing capacity degradation. To overcome these issues, a polymer electrolyte with self-healing capacity is introduced, which allows high Li+ transport, wide electrochemical window, and self-reconstruction of defects and fatigue cracks. The equipped Li|LFP batteries exhibit high initial specific capacity and excellent capacity retention, indicating the potential for developing safe and stable LMBs.
MATERIALS HORIZONS
(2023)
Article
Environmental Sciences
Can Li, Wei Wei, Yajing Duan, Zhongjiang Feng, Xiaomiao Feng, Chenming Zhu, Pengfei An
Summary: This study explores the correlation characteristics of residential land prices in Hebei Province using spatial econometric models and social network analysis. The results show significant spatial autocorrelation and local autocorrelation in regional residential land prices. The direct and spillover effects of influencing factors differ significantly. Central counties in Hebei Province have higher centrality in the network structure. The study provides valuable insights for urban land market regulation policies.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Agronomy
Xue Han, Chunping Chang, Zhongling Guo, Shuiqing Yin, Jifeng Li, Huiru Li, Rende Wang, Qing Li
Summary: This study evaluated several deterministic wind speed simulation models using observed hourly wind speed data from 191 climate stations in arid and semi-arid areas of China. The Guo (1/7c), Guo (1/2), and WINDGEN models performed the best, but all models tended to underestimate wind speeds. Calibrating the parameters of the Guo (1/7c) and Guo (1/2) models significantly improved the accuracy of wind erosion modeling.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Environmental Sciences
Xia Tian, Meiniu Yang, Zhongling Guo, Chunping Chang, Jifeng Li, Zixiao Guo, Huiru Li, Rende Wang, Qing Li, Jiaqiong Zhang, Xueyong Zou
Summary: In this research, microplastics (MPs) collected from semiarid farmlands in northern China that use plastic film mulch were investigated. The study revealed differences in the average amounts and enrichment ratios of MPs at different sampling heights. The height distribution of MPs was influenced by their shape, size, wind speed, and soil aggregate stability. The study suggests that future research should focus on the influence of higher sampling heights on the distribution of MPs and carefully parameterize the characteristics of MPs at different sampling heights in atmospheric transport models.
ENVIRONMENTAL POLLUTION
(2023)
Article
Optics
Rende Wang, Yingfei Pang, Xiaoyang Tang
Summary: This paper presents a novel laser dispersion spectrum extraction method for simultaneous temperature and water concentration measurements in a combustion flame. The dispersion phase signal is converted into the molecular free induction decay (FID) signal in the time domain, allowing separation of the dispersion phase and carrier phase FID signals. An improved simulated annealing algorithm efficiently searches for optimal temperature and concentration values. Numerical simulations demonstrate the noise immunity of the proposed method at different noise levels. Experimental results on a methane-air laminar premixed flame show that the proposed method outperforms laser absorption spectrometry in terms of measurement stability and accuracy, especially in the presence of laser power fluctuations. This method holds great promise in the field of combustion diagnostics.
OPTICS AND LASERS IN ENGINEERING
(2023)
Article
Environmental Sciences
Guoru Wei, Chunlai Zhang, Qing Li, Hongtao Wang, Rende Wang, Yajing Zhang, Yixiao Yuan
Summary: Through analyzing soil samples from 12 deserts in China, it was found that Chinese deserts have a significant amount of organic carbon storage, with the Taklimakan Desert having the highest storage. Soil grain-size and element geochemistry are the main factors influencing organic carbon density in Chinese deserts, while precipitation is the main climatic factor affecting its distribution. Based on climate and vegetation cover trends in the past 20 years, Chinese deserts have a high potential for future organic carbon sequestration.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Soil Science
Yixiao Yuan, Chunlai Zhang, Rende Wang, Xueyong Zou, Xiaofeng Zuo, Xiaoyu Zhang, Yajing Zhang, Wenping Li
Summary: Existing aeolian transport models are not accurate for unsaturated sand flow. This paper focuses on the fetch effect on sand transport rate above a farmland surface to improve the sand transport model. By studying data from a field investigation, a new aeolian transport model that considers shear velocity and fetch length was developed.
SOIL & TILLAGE RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Xiujing Lin, Xinshuang Liu, Shiyuan Xu, Zeyu Liu, Cuie Zhao, Ruiqing Liu, Pan Li, Xiaomiao Feng, Yanwen Ma
Summary: Solid polymer electrolytes (SPEs) are safer than traditional organic liquid electrolytes for lithium metal batteries (LMBs), but their low ionic conductivity at room temperature is a limitation. Adding nonflammable ionic liquids (ILs) as plasticizer agents can suppress crystallinity. Among the cations investigated, EMIM+ showed the best reversible Li+ intercalation/deintercalation behavior due to its superior cationic solvation, highest ion conductivity, and lowest viscosity. Batteries based on the optimized EMIM+-encapsulated ionogel electrolyte demonstrated stable cycling performance.
NEW JOURNAL OF CHEMISTRY
(2022)
