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Article ; Online: Evaluation of alkaline activated sodium persulfate sustained release rod for the removal of dissolved trichloroethylene.

Liang, Chenju / Weng, Chen-Yuan

2022 Volume 439, Page(s) 129657

Abstract: The presence of trichloroethylene (TCE) dense non-aqueous phase liquid (DNAPL) in the subsurface can generate a dissolved phase plume in groundwater. This study developed an alkaline activated sodium persulfate (SPS) sustained release oxidation rod ( ... ...

Abstract	The presence of trichloroethylene (TCE) dense non-aqueous phase liquid (DNAPL) in the subsurface can generate a dissolved phase plume in groundwater. This study developed an alkaline activated sodium persulfate (SPS) sustained release oxidation rod (alkaline SPS SR-Rod) for long-term in situ chemical oxidation accelerated treatment of TCE dissolved from TCE DNAPL, by creating a greater concentration gradient at the TCE DNPL boundary. The dissolution of TCE DNAPL (1 mL) in water (280 mL) generated ~700 mg L
MeSH term(s)	Delayed-Action Preparations ; Groundwater ; Sodium Compounds ; Soil ; Sulfates ; Trichloroethylene ; Water Pollutants, Chemical/analysis
Chemical Substances	Delayed-Action Preparations ; Sodium Compounds ; Soil ; Sulfates ; Water Pollutants, Chemical ; Trichloroethylene (290YE8AR51) ; sodium persulfate (J49FYF16JE)
Language	English
Publishing date	2022-07-21
Publishing country	Netherlands
Document type	Journal Article ; Research Support, U.S. Gov't, Non-P.H.S. ; Research Support, Non-U.S. Gov't
ZDB-ID	1491302-1
ISSN	1873-3336 ; 0304-3894
ISSN (online)	1873-3336
ISSN	0304-3894
DOI	10.1016/j.jhazmat.2022.129657
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Article: Evaluation of alkaline activated sodium persulfate sustained release rod for the removal of dissolved trichloroethylene

Liang, Chenju / Weng, Chen-Yuan

Journal of hazardous materials. 2022 July 19,

2022

Abstract	The presence of trichloroethylene (TCE) dense non-aqueous phase liquid (DNAPL) in the subsurface can generate a dissolved phase plume in groundwater. This study developed an alkaline activated sodium persulfate (SPS) sustained release oxidation rod (alkaline SPS SR-Rod) for long-term in situ chemical oxidation accelerated treatment of TCE dissolved from TCE DNAPL, by creating a greater concentration gradient at the TCE DNPL boundary. The dissolution of TCE DNAPL (1mL) in water (280mL) generated ~700mgL⁻¹, with a volumetric mass transfer coefficient (kLa) of 0.0187 d⁻¹. The alkaline SPS SR-Rod system had a kLa of 0.013 d⁻¹ for TCE dissolution at early stage, and thereafter aqueous TCE concentration remained below ~10mgL⁻¹ over 60 d of reaction. An SPS SR-Rod life-span of 186 d, for 90% of SPS released from the rod, was estimated. In the soil-water system, aqueous TCE was maintained < 3mg/L throughout the reaction and the soil oxidant demand was determined to be ~4 g-SPS/kg-soil in the alkaline SPS SR-Rod system. These results revealed that the use of the alkaline SPS SR-Rod can be effective as a method of treating dissolved TCE released from DNAPL contamination, and thereby accelerating TCE DNAPL removal.
Keywords	dense nonaqueous phase liquids ; groundwater ; mass transfer ; oxidants ; oxidation ; sodium ; soil water ; trichloroethylene
Language	English
Dates of publication	2022-0719
Publishing place	Elsevier B.V.
Document type	Article
Note	Pre-press version
ZDB-ID	1491302-1
ISSN	1873-3336 ; 0304-3894
ISSN (online)	1873-3336
ISSN	0304-3894
DOI	10.1016/j.jhazmat.2022.129657
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Article: Improving remote sensing retrieval of global ocean transparency with optical water classification

Jia, Tianxia / Zhang, Yonglin / Weng, Chen / Dong, Rencai

Ecological indicators. 2022 Aug. 22,

2022

Abstract: Ocean water transparency is an important indicator to measure the productivity of marine ecosystems, and it has great impact on phytoplankton biomass and community structure. Secchi disk depth (Zₛd) is a traditional measure of water transparency. With ... ...

Abstract	Ocean water transparency is an important indicator to measure the productivity of marine ecosystems, and it has great impact on phytoplankton biomass and community structure. Secchi disk depth (Zₛd) is a traditional measure of water transparency. With the development of satellite remote sensing technology, inversion through empirical model or semi-analytical model has become an effective and efficient means to obtain ocean Zₛd. In recent years, ocean parameter inversions based on water classification become an ongoing trend. Jia et al. (2021) constructed a fuzzy-logic optical water type scheme (i.e., U-OWT) for the global oceans and multi satellite sensors, which was a potential water classification template for remote sensing inversion of ocean Zₛd. Using U-OWT as the water classification basis, and by collecting 613 global ocean distributed SeaWiFS (Sea-viewing Wide Field-of-view Sensor) Rᵣₛ and Zₛd (with the range of 0.3 - 44.3 m) in-situ matchups, this study explored the optimal Zₛd empirical models for each optical water type and each water trophic state respectively. As a result, a class-based Zₛd hybrid empirical model (abbreviated as the Zₛd₋OWT model) was developed, which had relative high inversion accuracy over the entire Zₛd range (MAPE = 8.25 %, RMSE = 0.65 m, bias = – 0.03 m). Specifically, the Zₛd₋OWT model conducted the global empirical inversion for the oligotrophic water classes and the class-based hard fusion empirical inversions for the mesotrophic and the eutrophic water classes. Although the Zₛd₋OWT model was designed for SeaWiFS sensor, it still has the potential to be migrated to other multispectral sensors with similar band settings.
Keywords	biomass ; community structure ; empirical models ; eutrophication ; fuzzy logic ; hybrids ; oceans ; phytoplankton ; satellites ; seawater ; turbidity
Language	English
Dates of publication	2022-0822
Publishing place	Elsevier Ltd
Document type	Article
Note	Pre-press version
ZDB-ID	2036774-0
ISSN	1872-7034 ; 1470-160X
ISSN (online)	1872-7034
ISSN	1470-160X
DOI	10.1016/j.ecolind.2022.109359
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Article ; Online: Smart soundscape sensing: A low-cost and integrated sensing system for urban soundscape ecology research

Wang, Jingyi / Li, Chunming / Lin, Yinglun / Weng, Chen / Jiao, Yaran

Environmental Technology & Innovation. 2023 Feb., v. 29 p.102965-

2023

Abstract: Worldwide, cities are increasingly taking the burden of accommodating an extra population. It is undergoing the most extensive anthropogenic transformation of the landscape, the most predominant modification of biogeochemical processes, and the most ... ...

Abstract	Worldwide, cities are increasingly taking the burden of accommodating an extra population. It is undergoing the most extensive anthropogenic transformation of the landscape, the most predominant modification of biogeochemical processes, and the most intensive alteration of biological communities. These severe ecological stresses in cities urgently call for research on the coupled natural–human urban ecosystem. Soundscape, containing anthropogenic, biological, and geological elements, can provide rich information on natural and artificial environment. However, the main challenge is the discontinuity, high cost, and low efficiency of the existing manual acquisition and computation methods. It will limit the utilization of the mass data collected by the existing soundscape acquisition equipment, with the failure to reveal the pattern and dynamics included in the soundscape, in the meantime will obstruct the promising avenue for environmental research from the auditory perspective. Given the challenges, this paper introduces an innovative Smart Soundscape Sensing (SSS) system based on the intelligent sensor network and artificial intelligence (AI) technology. The technology fulfills three significant breakthroughs: (a) integrated data acquisition based on a multi-threaded acquisition strategy; (b) efficient data transmission and storage based on alternative transmission modes and storage protocols; (c) multifunctional data analysis and visualization based on automatic computation and AI technologies. Results prove that SSS can effectively uncover the evolution of soundscape and its environment, and surpass traditional hand-crafted methods, especially in long-term projects. Applying such an integrated and intelligent system can facilitate drawing out hidden insights within the soundscape, refining urban sound environment planning, and delivering a sustainable future.
Keywords	artificial intelligence ; data collection ; ecology ; environmental technology ; equipment ; evolution ; landscapes ; urban areas ; Soundscape ecology ; Machine learning ; Intelligent workflow ; Integrated data ; Computer-based soundscape analysis ; Sensor networks
Language	English
Dates of publication	2023-02
Publishing place	Elsevier B.V.
Document type	Article ; Online
Note	Use and reproduction
ISSN	2352-1864
DOI	10.1016/j.eti.2022.102965
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Article ; Online: Paper-Based Microfluidics Perform Mixing Effects by Utilizing Planar Constricted-Expanded Structures to Enhance Chaotic Advection.

Weng, Chen-Hsun / Hsu, Pei-Pei / Huang, An-Yu / Lin, Jr-Lung

Sensors (Basel, Switzerland)

2022 Volume 22, Issue 3

Abstract: This study aimed to design and fabricate planar constricted-expanded structures that are integrated into paper-based channels in order to enhance their chaotic advection and improve their mixing performance. Chromatography papers were used to print paper- ...

Abstract	This study aimed to design and fabricate planar constricted-expanded structures that are integrated into paper-based channels in order to enhance their chaotic advection and improve their mixing performance. Chromatography papers were used to print paper-based microfluidics using a solid-wax printer. Three different constricted-expanded structures-i.e., zigzag, crossed, and curved channels-were designed in order to evaluate their mixing performance in comparison with that of straight channels. A numerical simulation was performed in order to investigate the mixing mechanism, and to examine the ways in which the planar constricted-expanded structures affected the flow patterns. The experimental and numerical results indicated that the proposed structures can successfully mix confluents. The experimental results revealed that the mixing indices (
MeSH term(s)	Computer Simulation ; Equipment Design ; Lab-On-A-Chip Devices ; Microfluidics
Language	English
Publishing date	2022-01-28
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/s22031028
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Article ; Online: Environmental damage compensation for illegal solid waste dumping in China.

Dong, Rencai / Lv, Chencan / Weng, Chen / Lian, Anxin / Zhang, Lulu / Chen, Jialiang / Ye, Mai

Ecotoxicology and environmental safety

2023 Volume 253, Page(s) 114657

Abstract: China aims to improve its system for pursuing environmental damage compensation environmental violation cases. To hold violators accountable, China has an effective system for the identification and assessment (I&A) of environmental damage. This study ... ...

Abstract	China aims to improve its system for pursuing environmental damage compensation environmental violation cases. To hold violators accountable, China has an effective system for the identification and assessment (I&A) of environmental damage. This study selected a typical case of the illegal dumping of solid waste (IDSW) in China to analyze the causes, the degree, and characteristics of environmental damage, focusing on components such as the physical quantification and valuation of damage. The findings were as follows: (1) Compensation claimants and obligors consider baseline damage confirmation and causality analysis key components of I&A. (2) The I&A process for a specific case needs to focus on key nodes such as the type, location, and duration of IDSW. (3) Restraining IDSW requires accurately quantifying the physical and value-related losses caused by solid waste dumping. (4) In the selected case study, the damage from environmental contamination caused by the IDSW incident amounted to 3938,990 yuan, including an environmental damage value of 3651,990 yuan and a transaction cost of 287,000 yuan. Both parties accepted the I&A calculation process in this case, and the desired punishment effect was achieved. Hence, the case study demonstrated that accurate I&A is the technical basis for environmental damage compensation. Thus, in the future, more attention should be paid to the role of scientific and technological means and knowledge reserves in the I&A of environmental damage.
MeSH term(s)	Solid Waste ; Environmental Pollution ; China ; Refuse Disposal
Chemical Substances	Solid Waste
Language	English
Publishing date	2023-02-18
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	436536-7
ISSN	1090-2414 ; 0147-6513
ISSN (online)	1090-2414
ISSN	0147-6513
DOI	10.1016/j.ecoenv.2023.114657
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Article: First report of leaf blight caused by Alternaria alternata on Lactuca indica in China.

Wang, Yuchen / Weng, ChenWen / Zhang, Pinghua / Ye, Duo / Su, Pan / Zhang, Yanjun

Plant disease

2023

Abstract: Lactuca indica, an annual or biennial herbaceous plant, is widespread in valleys, shrubland, ditches, hillside meadows or fields (Wang et al. 2003). In China, it is widely used as medicine and high protein feed for herbivorous animal husbandry. In July ... ...

Abstract	Lactuca indica, an annual or biennial herbaceous plant, is widespread in valleys, shrubland, ditches, hillside meadows or fields (Wang et al. 2003). In China, it is widely used as medicine and high protein feed for herbivorous animal husbandry. In July 2022, leaf blight on L. indica was observed at Zhejiang Normal University (29°8'4″N, 119°37'54″E) in Jinhua City, Zhejiang Province, China. 70% of the 87 plants investigated were infected. Small brown spots with a yellow halos first appeared on the leaves, then became irregular necrotic spots until the entire leaf wilted and fell off. To identify the pathogen, four symptomatic leaves were collected and disinfected according to Wang et al. 2023. Then they were transferred onto potato dextrose agar (PDA), and incubated at 28°C for 7 days. To obtain the pure culture, the marginal mycelium was transferred to a new PDA plate. The colony of the isolated LPB-1 was light gray and regularly round at the early stage, and then changed to dark gray and villous. The back of the culture plate appeared sooty black. The conidia of the isolated fungi (n=50) were in chains, brown, obclavate, ovoid or ellipsoid, with an average size of 29.09 µm long and 6.41 µm wide, with 0 to 3 longitudinal and 1 to 7 transverse septa. These cultural and morphological characteristics were consistent with those of Alternaria alternata (Simmons 2007). To identify the strain, internal transcribed spacer (ITS) region, RNA polymerase Ⅱ second largest subunit (RPB2), and translation elongation factor 1-alpha (TEF1-α) genes were amplified with the primers ITS1/ITS4 (White et al. 1990), RPB2-5F/RPB2-7cR (Liu et al. 1999) and EF1-728F/EF1-986R (Carbone & Kohn 1999). The RPB2 (OP909715), TEF-1α (OP909714), and ITS (OP776880) were 99 to 100% identical to those of A. alternata (GenBank accession nos. MZ170963.1, MK605900.1, and MK605895.1 for RPB2 sequences; ON951981.1, KJ008702.1, and MK672900.1 for TEF-1α sequences; OP850817.1, OP811328.1, and OP740510.1 for ITS sequences). In addition, the phylogenetic analysis also showed that the stain LPB-1 was A. alternata. To complete Koch's postulates, the conidial suspension (1×108 conidia/mL) were spray-inoculated on healthy leaves of three mature L. indica plants with sterile water as a control. All plants were incubated at 28 ℃ in a greenhouse with 12-h-light/12-h-dark photoperiod and approximately 70% humidity (Li et al. 2019). Fourteen days after incubation, the inoculated leaves showed symptoms similar to those of naturally infected leaves, while the controls remained asymptomatic. The pathogen reisolated from the inoculated leaves had the same morphological characteristics and molecular identification results as the original isolate. All the results shown above indicated that A. alternata was responsible for the leaf blight of L. indica. As far as we know, this is the first report of leaf blight caused by Alternaria alternata on Lactuca indica in China. The identification of the pathogen could provide relevant information for the establishment of methods to control the disease.
Language	English
Publishing date	2023-08-29
Publishing country	United States
Document type	Journal Article
ZDB-ID	754182-x
ISSN	0191-2917
ISSN	0191-2917
DOI	10.1094/PDIS-06-23-1206-PDN
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Article ; Online: What Constitutes the High-Quality Soundscape in Human Habitats? Utilizing a Random Forest Model to Explore Soundscape and Its Geospatial Factors Behind.

Wang, Jingyi / Weng, Chen / Wang, Zhen / Li, Chunming / Wang, Tingting

International journal of environmental research and public health

2022 Volume 19, Issue 21

Abstract: Soundscape is the production of sounds and the acoustic environment, and it emphasizes peoples' perceiving and experiencing process in the context. To this end, this paper focuses on the Pearl River Delta in China, and implements an empirical study based ...

Abstract	Soundscape is the production of sounds and the acoustic environment, and it emphasizes peoples' perceiving and experiencing process in the context. To this end, this paper focuses on the Pearl River Delta in China, and implements an empirical study based on the soundscape evaluation data from the Participatory Soundscape Sensing (PSS) system, and the geospatial data from multiple sources. The optimal variable set with 24 features are successfully used to establish a random forest model to predict the soundscape comfort of a new site (F1 = 0.61). Results show that the acoustic factors are most important to successfully classify soundscape comfort (averaged relative importance of 17.45), subsequently ranking by built environment elements (11.28), temporal factors (9.59), and demographic factors (9.14), while landscape index (8.60) and land cover type (7.71) seem to have unclear importance. Furthermore, the partial dependence analysis provides the answers about the appropriate threshold or category of various variables to quantitatively or qualitatively specify the necessary management and control metrics for maintaining soundscape quality. These findings suggest that mainstreaming the soundscape in the coupled natural-human systems and clarifying the mechanisms between soundscape perception and geospatial factors can be beneficial to create a high-quality soundscape in human habitats.
MeSH term(s)	Humans ; Sound ; Acoustics ; China ; Ecosystem
Language	English
Publishing date	2022-10-26
Publishing country	Switzerland
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2175195-X
ISSN	1660-4601 ; 1661-7827
ISSN (online)	1660-4601
ISSN	1661-7827
DOI	10.3390/ijerph192113913
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Article ; Online: First Report of Leaf Blight Caused by Alternaria alternata on Lactuca indica in China

Wang, Yu-Chen / Weng, Chen-Wen / Zhang, Ping-Hua / Ye, Duo / Panʻ Su / Zhang, Yan-Jun

Plant Disease. 2023 Dec. 01, v. 107, no. 12 p.4027-

2023

Abstract: Lactuca indica, an annual or biennial herbaceous plant, is widespread in valleys, shrublands, ditches, hillside meadows, and fields (Wang et al. 2003). In China, it is widely used as medicine and high-protein feed for herbivorous animal husbandry. In ... ...

Abstract	Lactuca indica, an annual or biennial herbaceous plant, is widespread in valleys, shrublands, ditches, hillside meadows, and fields (Wang et al. 2003). In China, it is widely used as medicine and high-protein feed for herbivorous animal husbandry. In July 2022, leaf blight on L. indica was observed at Zhejiang Normal University (29°8′4″N, 119°37′54″E) in Jinhua City, Zhejiang Province, China. Seventy percent of the 87 plants investigated were infected. Small brown spots with yellow halos first appeared on the leaves and then developed into irregular necrotic spots until the entire leaf wilted and fell off. To identify the pathogen, four symptomatic leaves were collected and disinfected as described by Wang et al. (2023). Then, they were transferred onto potato dextrose agar (PDA) and incubated at 28°C for 7 days. To obtain a pure culture, the marginal mycelium was transferred to a new PDA plate. The colony of the isolated LPB-1 was light gray and regularly round at the early stage and then changed to dark gray and villous. The reverse side of the culture plate appeared sooty black. The conidia of the isolated fungi (n = 50) were in chains, brown, obclavate, ovoid or ellipsoid, with an average size of 29.09 μm long and 6.41 μm wide and 0 to 3 longitudinal and 1 to 7 transverse septa. These cultural and morphological characteristics were consistent with those of Alternaria alternata (Simmons 2007). To identify the strain, internal transcribed spacer (ITS) region, RNA polymerase II second largest subunit (RPB2), and translation elongation factor 1-alpha (TEF-1α) genes were amplified with the primers ITS1/ITS4 (White et al. 1990), RPB2-5F/RPB2-7cR (Liu et al. 1999), and EF1-728F/EF1-986R (Carbone and Kohn 1999), respectively. The RPB2 (OP909715), TEF-1α (OP909714), and ITS (OP776880) sequences were 99 to 100% identical to those of A. alternata (GenBank accession nos. MZ170963.1, MK605900.1, and MK605895.1 for RPB2 sequences; ON951981.1, KJ008702.1, and MK672900.1 for TEF-1α sequences; and OP850817.1, OP811328.1, and OP740510.1 for ITS sequences). In addition, the phylogenetic analysis also showed that the strain LPB-1 was A. alternata. To fulfill Koch’s postulates, the conidial suspension (1 × 10⁸ conidia/ml) was spray-inoculated on healthy leaves of three mature L. indica plants, with sterile water as a control. All plants were incubated at 28°C in a greenhouse with a 12-h light/12-h dark photoperiod and approximately 70% relative humidity (Li et al. 2019). Fourteen days after incubation, the inoculated leaves showed symptoms similar to those of naturally infected leaves, whereas the controls remained asymptomatic. The pathogen reisolated from the inoculated leaves had the same morphological characteristics and molecular identification results as the original isolate. All the results shown above indicated that A. alternata was responsible for the leaf blight of L. indica. As far as we know, this is the first report of leaf blight caused by A. alternata on L. indica in China. The identification of the pathogen could provide relevant information for the establishment of methods to control the disease.
Keywords	Alternaria alternata ; DNA-directed RNA polymerase ; Lactuca indica ; conidia ; culture media ; greenhouses ; herbaceous plants ; herbivores ; hills ; internal transcribed spacers ; leaf blight ; leaves ; medicine ; mycelium ; pathogens ; peptide elongation factors ; phylogeny ; relative humidity ; shrublands ; China
Language	English
Dates of publication	2023-1201
Publishing place	The American Phytopathological Society
Document type	Article ; Online
ZDB-ID	754182-x
ISSN	0191-2917
ISSN	0191-2917
DOI	10.1094/PDIS-06-23-1206-PDN
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Article: Lipid rafts may affect the coalescence of milk fat globules through phase transition after thermal treatment

Wei, Teng / Huang, Yingchao / Weng, Chen / Chen, Fang / Tan, Chaoli / Liu, Wenqun / Deng, Zeyuan / Li, Jing

Food chemistry. 2023 Jan. 15, v. 399

2023

Abstract: This study aimed to investigate changes of fat globules and their membranes, and further analyze evolution of lipid profile of lipid rafts in membranes during heat processing of cow milk. Size of fat globules increased from 3.16 μm to 3.70 μm and ζ- ... ...

Abstract	This study aimed to investigate changes of fat globules and their membranes, and further analyze evolution of lipid profile of lipid rafts in membranes during heat processing of cow milk. Size of fat globules increased from 3.16 μm to 3.70 μm and ζ-potential decreased from −0.53 mV to −0.38 mV after thermal treatment, suggesting that fat globule membrane was destroyed and fat globule occurred coalescence. Glycerophospholipids and cholesterol in fat globule membrane decreased while sphingomyelin increased after thermal treatment. Results of lipidomics show that total of 38 species of 5 lipids molecule showed ability to differentiate the samples. At high temperatures, highly unsaturated glycerophospholipids and sterol lipids were lost from rafts, meanwhile, sphingomyelin and ceramide increased in this region. Significant change of lipid profile in the raft region during thermal treatment suggested a potential relationship between lipid rafts and fat globule coalescence behavior.
Keywords	ceramides ; cholesterol ; evolution ; food chemistry ; glycerophospholipids ; heat ; heat treatment ; lipidomics ; milk ; milk fat ; phase transition ; sphingomyelins
Language	English
Dates of publication	2023-0115
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	243123-3
ISSN	1873-7072 ; 0308-8146
ISSN (online)	1873-7072
ISSN	0308-8146
DOI	10.1016/j.foodchem.2022.133867
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