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  1. 2121

    Analysis and Evaluation of Agricultural Non-point Source Pollution Sources in Four Cities in the Pearl River Delta by XIA Lijia, YU Muqin, YAN Meng, JIANG Yu, XIONG Jing

    Published 2021-01-01
    “…Based on the 2018 statistical yearbook,this paper carries out the statistics and analysis on the agricultural non-point source pollution of the four major economic cities,namely Guangzhou,Dongguan,Shenzhen and Foshan in the Pearl River Delta by the inventory analysis method.The study found that:In 2018,the four cities in the Pearl River Delta produced 137 179.3 tons of COD,19 345.5 tons of TN,2 865.2 tons of TP,and 2 926.4 tons of NH<sup>+</sup><sub>4</sub>-N from agricultural non-point source pollution,among which the COD is considered as the primary pollutant,mainly from livestock and poultry breeding,while TN,NH<sup>+</sup><sub>4</sub>-N and TP mainly come from rural life and planting industry.In terms of regions,the pollutant emission intensity of Foshan is 427.42 kg/hm<sup>2</sup>,which is 1.5 times that of Guangzhou,ranking first among the four cities.The comprehensive water quality index caused by agricultural non-point source pollution in Guangzhou and Foshan is both greater than 4,so the two cities are considered as severely polluted areas,with heavy pressure to reduce agricultural non-point source pollution,while Dongguan and Shenzhen are lightly polluted areas.…”
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  2. 2122
  3. 2123

    On the Existence of a Normal Trimagic Square of Order 16n by Can Hu, Jiake Meng, Fengchu Pan, Maoting Su, Shuying Xiong

    Published 2023-01-01
    “…The study of magic squares has a long history, and magic squares have been applied to many mathematical fields. In this paper, we give a complete solution to the existence of normal trimagic squares of all orders 16n. …”
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  4. 2124

    Damage of Green Synthetic Cement Slurry to Clastic Rock Reservoir by Meng Xu, Xin Tan, Libo Yang, Hanlie Cheng, David Cofell

    Published 2023-01-01
    “…Green synthesis and metal oxide composites have attracted much attention from researchers of industry and academia. …”
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  5. 2125

    Analysis of kinematic and kinetic changes in scoliosis following spinal manipulation by Yanyun Gou, Lin Meng, Shaoqing Chen, Zheng Jiang, Huangwei Lei

    Published 2025-01-01
    “…Impairment in movement function stands out as a typical characteristic in cases of scoliosis. This study utilized a single-arm clinical trial design involving 35 patients aged 18 to 20 with idiopathic scoliosis (IS) and Cobb angles ranging from 10° to 30°. …”
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  6. 2126

    Separation Techniques for Quantification of Radionuclides in Environmental Samples by Dusan Galanda, Pavol Rajec, Lubomir Mátel, Olga Rosskopfová, Silvia Dulanská

    Published 2009-01-01
    “…The area is adjacent to a refinery and hazardous waste processing center, as well as the municipal incinerator plant, and so might possess an unusually high level of ecotoxic metals. We found that the levels of both naturally occurring and anthropogenic radionuclides fell within the expected ranges, indicating that these facilities pose no radiological threat to the local environment. …”
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  7. 2127
  8. 2128

    Analysis and Recommendation of Outdoor Activities for Smart City Users Based on Real-Time Contextual Data by S. R. Mani Sekhar, D. M. Mushtaq Ahmed, G. M. Siddesh

    Published 2024-01-01
    “…This research attempts to provide personalized recommendations that are in line with users’ preferences, the state of the environment at the time, and other pertinent contextual factors by utilizing data from multiple sources, including IoT devices, mobile applications, and environmental sensors.…”
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  9. 2129
  10. 2130

    Robust adaptive optimization for sustainable water demand prediction in water distribution systems by Ke Wang, Jiayang Meng, Zhangquan Wang, Kehua Zhao, Banteng Liu

    Published 2025-02-01
    “…The predictive power of the proposed model is harnessed through the construction of deep neural networks that utilize the decomposed data to forecast minutely water demand. …”
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    Double Superposed Epoch Analysis of Geomagnetic Storms and Corresponding Solar Wind and IMF in Solar Cycles 23 and 24 by V. Manu, N. Balan, Qing‐He Zhang, Zan‐Yang Xing

    Published 2023-03-01
    “…We identify 135 and 61 ICME (interplanetary coronal mass ejection) driven clear geomagnetic storms (DstMin ≤ −50 nT) in SC23 and SC24, respectively, giving a reduction of 55% storms in SC24, and present the double superposed epoch analysis (DSEA) of the storms/activities in SC23 and SC24 using the Dst, symmetric H (SymH), Kp and AE indices. …”
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  13. 2133

    Study on Fracture and Stress Evolution Characteristics of Ultra-Thick Hard Sandstone Roof in the Fully Mechanized Mining Face with Large Mining Height: A Case Study of Xiaojihan Coal Mine in Western China by Feng Ju, Meng Xiao, Zequan He, Pai Ning, Peng Huang

    Published 2018-01-01
    “…Especially, in the mining areas of western China, the fully mechanized mining faces with high mining height and high-strength mining are more prominent. …”
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  14. 2134
  15. 2135

    Experimental Investigation of Flow Resistance in a Coal Mine Ventilation Air Methane Preheated Catalytic Oxidation Reactor by Bin Zheng, Yongqi Liu, Ruixiang Liu, Jian Meng, Mingming Mao

    Published 2015-01-01
    “…This paper reports the results of experimental investigation of flow resistance in a coal mine ventilation air methane preheated catalytic oxidation reactor. …”
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