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Article ; Online: Using Source Fingerprinting Techniques to Investigate Sediment Sources during Snowmelt and Rainfall Erosion Events in a Small Catchment in the Black Soil Region of Northeast China

Du, Pengfei / Huang, Donghao / Liu, Bing / Qin, Wei

Land. 2023 Feb. 23, v. 12, no. 3

2023

Abstract: Concern for the offsite impact of eroded sediment and the need to develop effective catchment sediment management strategies has directed attention to the need for an improved understanding of the primary sediment sources within catchments and the ... ...

Abstract	Concern for the offsite impact of eroded sediment and the need to develop effective catchment sediment management strategies has directed attention to the need for an improved understanding of the primary sediment sources within catchments and the potential of sediment source fingerprinting techniques to provide such information. The study reported here was undertaken in the black soil region of Northeast China, where soil erosion is seen as a serious threat to the sustainable use of soil resources and offsite impacts of eroded soil are also concerned. The study applies source fingerprinting techniques to the evaluation of sediment sources in a small (3.46 km²) agricultural catchment. Sediment sources from five snowmelt and five rainfall events of varying magnitude were contrasted. Three key potential sediment sources were identified within the study catchment: gullies, cultivated topsoil and uncultivated topsoil. Geochemical properties of the source materials (Ti, Ga, Br and Ba) were used as composite fingerprints capable of discriminating between the three potential sources. A mixing model, optimized using a genetic algorithm and coupled with a Monte Carlo procedure to quantify the uncertainty associated with the resulting estimates, was used for source apportionment. The results indicated mean source contributions for the set of 10 events for cultivated topsoil, uncultivated topsoil and the gullies of ~30%, ~10% and ~60%, respectively. In general, snowmelt and rainfall events were characterized by increased contributions from gully sources and cultivated topsoil, respectively. The study is seen as demonstrating the potential for using source tracing techniques to investigate sediment sources in environments where strong seasonal contrasts between snowmelt and rainfall events exist.
Keywords	Monte Carlo method ; agricultural watersheds ; algorithms ; eroded soils ; land ; models ; rain ; sediments ; snowmelt ; topsoil ; uncertainty ; water erosion ; China
Language	English
Dates of publication	2023-0223
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article ; Online
ZDB-ID	2682955-1
ISSN	2073-445X
ISSN	2073-445X
DOI	10.3390/land12030542
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Taking full advantage of 'low-quality' datasets in watershed modeling and management: From a perspective of parameter calibration.

Rong, Yi / Qin, Chengxin / Yen, Haw / Sun, Fu / Du, Pengfei / Zeng, Siyu

Journal of environmental management

2024 Volume 351, Page(s) 119955

Abstract: The quality of calibration datasets is critical for establishing well-calibrated models for reliable decision-making support. However, the analysis of the influence of calibration dataset quality and the discussion on how to use flawed and/or incomplete ... ...

Abstract	The quality of calibration datasets is critical for establishing well-calibrated models for reliable decision-making support. However, the analysis of the influence of calibration dataset quality and the discussion on how to use flawed and/or incomplete datasets are still far from sufficient. An evaluation framework for the impact of model calibration data on parameter identifiability, sensitivity, and uncertainty (ISU) was established. Three quantitative and normalized indicators were designed to describe the magnitude of ISU. With the case study of the upper Daqing River watershed, China and the model SWAT (Soil and Water Assessment Tool), one ideal dataset without quality flaws and 79 datasets with different types of flaws including observation error, low monitoring frequency, short data duration and low data resolution were evaluated. The result showed that 4 of 13 parameters that control canopy, groundwater and channel processes have higher ISU values, indicating the high identifiability, high sensitivity, and low uncertainty. The largest gap of parameter ISU between dataset with quality flaw and ideal dataset was 0.61 due to short data duration, while the smallest gap was -0.28 due to low monitoring data frequency. Although some defective datasets caused unacceptable calibration results and model output, some defective datasets can still be valuable for model calibration which depends on the hydrological processes of interest when applying the model. Equivalent calibration results were yielded by the datasets with similar statistical properties. When using datasets with traditional defective issues for calibration, a new step checking the consistency among decision goal, representative system process, determinative parameters and calibration datasets is suggested. Practices including process-related data selection, dataset regrouping and risk self-reporting when using low-quality datasets are encouraged to increase the reliability of model-based watershed management.
MeSH term(s)	Models, Theoretical ; Calibration ; Reproducibility of Results ; Water Quality ; Soil
Chemical Substances	Soil
Language	English
Publishing date	2024-01-01
Publishing country	England
Document type	Journal Article
ZDB-ID	184882-3
ISSN	1095-8630 ; 0301-4797
ISSN (online)	1095-8630
ISSN	0301-4797
DOI	10.1016/j.jenvman.2023.119955
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Article ; Online: Chitosan-Enhanced pH-Sensitive Anthocyanin Indicator Film for the Accurate Monitoring of Mutton Freshness.

Ma, Yanli / Wen, Lei / Liu, Yaobo / Du, Pengfei / Hu, Peng / Cao, Jianfang / Wang, Weiting

Polymers

2024 Volume 16, Issue 6

Abstract: Natural anthocyanin indicator films with an excellent pH response enable the visual assessment of meat freshness. In this investigation, chitosan was initially employed as a colorimetric enhancer, leading to the development of a pH-sensitive indicator ... ...

Abstract	Natural anthocyanin indicator films with an excellent pH response enable the visual assessment of meat freshness. In this investigation, chitosan was initially employed as a colorimetric enhancer, leading to the development of a pH-sensitive indicator film that was enhanced in colorimetry. The characteristics of this indicator film were thoroughly analyzed, and the mechanism responsible for the increased sensitivity of anthocyanin within the chitosan matrix, as indicated by the color response, was elucidated. The recrystallization of chitosan impeded the hydration of AH
Language	English
Publishing date	2024-03-20
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2527146-5
ISSN	2073-4360 ; 2073-4360
ISSN (online)	2073-4360
ISSN	2073-4360
DOI	10.3390/polym16060849
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Article ; Online: Facile fabricate sandwich-structured molecularly imprinted dopamine polymer for simultaneously specific capture of Low-density lipoprotein and eliminate "bad cholesterol".

Cao, Jianfang / Liu, Yaobo / Wang, Weiting / Du, Pengfei / Liu, Gang / Ma, Yanli / Wang, Yuanshang

Journal of chromatography. A

2024 Volume 1724, Page(s) 464910

Abstract: A simplified approach for preparation of sandwich type molecularly imprinted polymers (PPDA-MIPs) is proposed for simultaneously identify Low-density lipoprotein (LDL) and dispose "bad cholesterol". Porous polydopamine nanosphere (PPDA) is applied as a ... ...

Abstract	A simplified approach for preparation of sandwich type molecularly imprinted polymers (PPDA-MIPs) is proposed for simultaneously identify Low-density lipoprotein (LDL) and dispose "bad cholesterol". Porous polydopamine nanosphere (PPDA) is applied as a matrix for immobilization of LDL, and the imprinted layer is formed by dopamine acting as a functional monomer. Since imprinted cavities exhibit shape memory effects in terms of recognizing selectivity, the PPDA-MIPs exhibit excellent selectivity toward LDL and a substantial binding capacity of 550.3 μg mg
MeSH term(s)	Lipoproteins, LDL/blood ; Lipoproteins, LDL/chemistry ; Lipoproteins, LDL/isolation & purification ; Adsorption ; Polymers/chemistry ; Cholesterol/blood ; Cholesterol/chemistry ; Indoles/chemistry ; Animals ; Molecularly Imprinted Polymers/chemistry ; Dopamine/blood ; Dopamine/chemistry ; Dopamine/isolation & purification ; Dopamine/analysis ; Molecular Imprinting/methods ; Goats ; Nanospheres/chemistry
Chemical Substances	Lipoproteins, LDL ; Polymers ; polydopamine ; Cholesterol (97C5T2UQ7J) ; Indoles ; Molecularly Imprinted Polymers ; Dopamine (VTD58H1Z2X)
Language	English
Publishing date	2024-04-21
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	1171488-8
ISSN	1873-3778 ; 0021-9673
ISSN (online)	1873-3778
ISSN	0021-9673
DOI	10.1016/j.chroma.2024.464910
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Article ; Online: Spontaneous Rising of a Whirling-Swimmer Driven by a Bubble.

Dai, Minglu / Tu, Chengxu / Du, Pengfei / Bao, Fubing / Lin, Jianzhong

Langmuir : the ACS journal of surfaces and colloids

2023 Volume 39, Issue 30, Page(s) 10638–10650

Abstract: The wind-dispersed seeds can rotate and fall like small vehicles with the help of the wind to obtain a longer propagation distance. Inspired by this, we propose a novel bubble-driven three-bladed whirling-swimmer (WS) to travel in the fluid as a vehicle. ...

Abstract	The wind-dispersed seeds can rotate and fall like small vehicles with the help of the wind to obtain a longer propagation distance. Inspired by this, we propose a novel bubble-driven three-bladed whirling-swimmer (WS) to travel in the fluid as a vehicle. Four types of WSs with blade folding angles (φ) ranging from 10 to 60° were designed, and their swimming performance was evaluated. Regardless of the WS shape, the velocity increases linearly with φ, while the angular frequency exhibits an asymptotic value. Further, both the
Language	English
Publishing date	2023-06-27
Publishing country	United States
Document type	Journal Article
ZDB-ID	2005937-1
ISSN	1520-5827 ; 0743-7463
ISSN (online)	1520-5827
ISSN	0743-7463
DOI	10.1021/acs.langmuir.3c01249
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Roles of vitamin K‑dependent protein in biomineralization (Review).

Zhang, Meng / Zhang, Qingqi / Du, Pengfei / Chen, Xin / Zhang, Yumei

International journal of molecular medicine

2023 Volume 53, Issue 1

Abstract: Vitamin K (VK), a fat‑soluble vitamin, is well known as an anticoagulant in the clinic. It is essential for the post‑translational activation of VK‑dependent proteins (VKDPs) because hydroquinone VK is a cofactor of glutamine carboxylase. At present, 17 ... ...

Abstract	Vitamin K (VK), a fat‑soluble vitamin, is well known as an anticoagulant in the clinic. It is essential for the post‑translational activation of VK‑dependent proteins (VKDPs) because hydroquinone VK is a cofactor of glutamine carboxylase. At present, 17 VKDPs are known, which are mainly involved in coagulation and calcification. When Glu residues are carboxylated to Gla residues, these proteins gain a higher calcium‑binding ability, which explains why VK has an important role in blood coagulation and biomineralization. However, the current view on the role of VK and several VKDPs in biomineralization remains inconsistent. For instance, conflicting results have been reported regarding the effect of
MeSH term(s)	Mice ; Animals ; Vitamin K/metabolism ; Osteocalcin/genetics ; Osteocalcin/metabolism ; Biomineralization ; Calcium-Binding Proteins/genetics ; Calcium-Binding Proteins/metabolism ; Extracellular Matrix Proteins/genetics ; Extracellular Matrix Proteins/metabolism ; Vascular Calcification/genetics ; Bone and Bones/metabolism
Chemical Substances	Vitamin K (12001-79-5) ; Osteocalcin (104982-03-8) ; Calcium-Binding Proteins ; Extracellular Matrix Proteins
Language	English
Publishing date	2023-11-24
Publishing country	Greece
Document type	Review ; Journal Article
ZDB-ID	1444428-8
ISSN	1791-244X ; 1107-3756
ISSN (online)	1791-244X
ISSN	1107-3756
DOI	10.3892/ijmm.2023.5330
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Article ; Online: Energy-Efficient Unmanned Aerial Vehicle-Aided Visible Light Communication with an Angle Diversity Transmitter for Joint Emergency Illumination and Communication.

Huang, Qiang / Wen, Wanli / Liu, Min / Du, Pengfei / Chen, Chen

Sensors (Basel, Switzerland)

2023 Volume 23, Issue 18

Abstract: Unmanned aerial vehicle-aided visible light communication (UAV-VLC) can be used to realize joint emergency illumination and communication, but the endurance of UAV is a key limiting factor. In order to overcome this limitation, this paper proposes the ... ...

Abstract	Unmanned aerial vehicle-aided visible light communication (UAV-VLC) can be used to realize joint emergency illumination and communication, but the endurance of UAV is a key limiting factor. In order to overcome this limitation, this paper proposes the use of an angle diversity transmitter (ADT) to enhance the energy efficiency of the UAV-VLC system. The ADT is designed with one bottom LED and several evenly distributed inclined side LEDs. By jointly optimizing the inclination angle of the side LEDs in the ADT and the height of the hovering UAV, the study aims to minimize the power consumption of the UAV-VLC system while satisfying the requirements of both illumination and communication. Simulation results show that the energy efficiency of the UAV-VLC system can be greatly enhanced by applying the optimized ADT. Moreover, the energy efficiency enhancement is much more significant when the LEDs in the ADT have a smaller divergence angle, or more side LEDs are configured in the ADT. More specifically, a 50.9% energy efficiency improvement can be achieved by using the optimized ADT in comparison to the conventional non-angle diversity transmitter (NADT).
Language	English
Publishing date	2023-09-14
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2052857-7
ISSN	1424-8220 ; 1424-8220
ISSN (online)	1424-8220
ISSN	1424-8220
DOI	10.3390/s23187886
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Article ; Online: Learning and inferring the diurnal variability of cyanobacterial blooms from high-frequency time-series satellite-based observations.

Li, Hu / Qin, Chengxin / He, Weiqi / Sun, Fu / Du, Pengfei

Harmful algae

2023 Volume 123, Page(s) 102383

Abstract: Observational evidences have suggested that the surface scums of cyanobacterial harmful blooms (CyanoHABs) are highly patchy, and their spatial patterns can vary significantly within hours. This stresses the need for the capacity to monitor and predict ... ...

Abstract	Observational evidences have suggested that the surface scums of cyanobacterial harmful blooms (CyanoHABs) are highly patchy, and their spatial patterns can vary significantly within hours. This stresses the need for the capacity to monitor and predict their occurrence with better spatiotemporal continuity, in order to understand and mitigate their causes and impacts. Although polar-orbiting satellites have long been used to monitor CyanoHABs, these sensors cannot be used to capture the diurnal variability of the bloom patchiness due to their long revisit periods. In this study, we use the Himawari-8 geostationary satellite to generate high-frequency time-series observations of CyanoHABs on a sub-daily basis not possible from previous satellites. On top of that, we introduce a spatiotemporal deep learning method (ConvLSTM) to predict the dynamics of bloom patchiness at a lead time of 10 min. Our results show that the bloom scums were highly patchy and dynamic, and the diurnal variability was assumed to be largely associated with the migratory behavior of cyanobacteria. We also show that, ConvLSTM displayed fairly satisfactory performance with promising predictive capability, with Root Mean Square Error (RMSE) and determination coefficient (R
MeSH term(s)	Cyanobacteria ; Time Factors
Language	English
Publishing date	2023-01-25
Publishing country	Netherlands
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2091119-1
ISSN	1878-1470 ; 1568-9883
ISSN (online)	1878-1470
ISSN	1568-9883
DOI	10.1016/j.hal.2023.102383
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Article ; Online: Investigating the sub-daily dynamics of cyanobacterial blooms by coupling high-frequency time-series remote sensing with hydro-ecological modelling.

Li, Hu / Qin, Chengxin / He, Weiqi / Sun, Fu / Du, Pengfei

Journal of environmental management

2022 Volume 317, Page(s) 115311

Abstract: Cyanobacterial Harmful Algal Blooms (CyanoHABs) are a health-threatening and increasingly prevalent environmental issue at both regional and global levels. An improved understanding of the short-term dynamics of CyanoHABs is required to better capture ... ...

Abstract	Cyanobacterial Harmful Algal Blooms (CyanoHABs) are a health-threatening and increasingly prevalent environmental issue at both regional and global levels. An improved understanding of the short-term dynamics of CyanoHABs is required to better capture their spatial pattern and temporal evolution. However, the heterogeneous and dynamic nature of CyanoHABs, and the interacting factors and processes that drive them, make interpreting and predicting the blooms a very challenging task. In this paper, we used an integrative approach that combines high-frequency time-series remote sensing with hydro-ecological modelling, to reproduce and investigate the sub-daily dynamics of CyanoHABs in Taihu Lake. Results show that the distribution of CyanoHABs is highly patchy and dynamic without intensive wind-induced circulation and turbulence, which suggests that the dynamic pattern may be largely caused by the migratory behavior of cyanobacteria. The hydro-ecological model well reproduced the observed pattern and trend, and the average of Root Mean Square Error (RMSE) and coefficient of determination (R
MeSH term(s)	Cyanobacteria/physiology ; Environmental Monitoring ; Eutrophication ; Harmful Algal Bloom ; Lakes ; Remote Sensing Technology ; Wind
Language	English
Publishing date	2022-06-09
Publishing country	England
Document type	Journal Article
ZDB-ID	184882-3
ISSN	1095-8630 ; 0301-4797
ISSN (online)	1095-8630
ISSN	0301-4797
DOI	10.1016/j.jenvman.2022.115311
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Article ; Online: Optimizing the soil conservation service curve number model by accounting for rainfall characteristics: a case study of surface water sources in Beijing.

Song, Wenlong / Jiao, Jian / Du, Pengfei / Liu, Hongjie

Environmental monitoring and assessment

2021 Volume 193, Issue 3, Page(s) 115

Abstract: The upper catchment of the Miyun reservoir is an important drinking water source in Beijing. In recent years, researchers have used the soil conservation service curve number (SCS-CN) model to calculate surface runoff for the district. Although the ... ...

Abstract	The upper catchment of the Miyun reservoir is an important drinking water source in Beijing. In recent years, researchers have used the soil conservation service curve number (SCS-CN) model to calculate surface runoff for the district. Although the runoff forecasting accuracy was unsatisfactory, the lack of understanding of rainfall processes and their influence on runoff may explain the observed deviations. Our study sought to optimize and assess the SCS-CN model simulation accuracy for the district by proposing an SCS-CN calculation method for each runoff event (CN
MeSH term(s)	Beijing ; Environmental Monitoring ; Rain ; Soil ; Water ; Water Movements
Chemical Substances	Soil ; Water (059QF0KO0R)
Language	English
Publishing date	2021-02-08
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	782621-7
ISSN	1573-2959 ; 0167-6369
ISSN (online)	1573-2959
ISSN	0167-6369
DOI	10.1007/s10661-021-08862-0
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