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Gao H, Wu X, Yang X, Sun M, Liang J, Xiao Y, Peng F. Silicon inhibits gummosis by promoting polyamine synthesis and repressing ethylene biosynthesis in peach. FRONTIERS IN PLANT SCIENCE 2022; 13:986688. [PMID: 36518518 PMCID: PMC9744191 DOI: 10.3389/fpls.2022.986688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 10/25/2022] [Indexed: 06/17/2023]
Abstract
Silicon is a beneficial element for plant growth, as well as for improving plant resistance to multiple biotic and abiotic stresses. Gummosis is a common harmful disease in peach and is induced by many factors. However, the effect of silicon on gummosis of peach has not been determined yet. In this study, we reported that application of silicon significantly reduced gummosis by regulating biosynthesis of ethylene and polyamines in peach. Ethylene promoted the development of gummosis by inducing the expression of genes encoding cell wall degrading enzymes. While application of different types of polyamines, including spermidine and spermine, dramatically inhibited the occurrence of gummosis. Moreover, polyamines inhibited the ethylene biosynthesis by down-regulating expression of ethylene biosynthetic gene PpACS1 (1-aminocyclopropane -1-carboxylic acid synthase), as well as the enzymatic activity of ACS. We further found that application of silicon significantly restricted the development of gummosis in peach. Exogenous silicon dramatically inhibited expression of PpACS1 and the enzymatic activity of its product to reduce ethylene biosynthesis. Simultaneously, the activity of S-adenosylmethionine decarboxylase, a key enzyme in ployamines biosynthesis, was increased by 9.85% under silicon treatment, resulting in elevated accumulation of polyamines. Thus, our data proved that application of silicon restricted gummosis development by activating ployamines biosynthesis and inhibiting ethylene synthesis in peach.
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Affiliation(s)
| | | | | | | | | | | | - Futian Peng
- *Correspondence: Yuansong Xiao, ; Futian Peng,
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2
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Zhai H, Bendikov T, Gal A. Phase Separation of Oppositely Charged Polymers Regulates Bioinspired Silicification. Angew Chem Int Ed Engl 2022; 61:e202115930. [PMID: 35187784 PMCID: PMC9314620 DOI: 10.1002/anie.202115930] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Indexed: 01/13/2023]
Abstract
In nature, simple organisms evolved mechanisms to form intricate biosilica nanostructures, far exceeding current synthetic manufacturing. Based on the properties of extracted biomacromolecules, polycation-polyanion pairs were suggested as moderators of biosilica formation. However, the chemical principles of this polymer-induced silicification remain unclear. Here, we used a biomimetic polycation-polyanion system to study polymer-induced silicification. We demonstrate that it is the polymer phase separation process, rather than silica-polymer interactions, which controls silica precipitation. Since ionic strength controls this electrostatic phase separation, it can be used to tune the morphology and structure of the precipitates. In situ cryo electron microscopy highlights the pivotal role of the hydrated polymer condensates in this process. These results pave the road for developing nanoscale morphologies of bioinspired silica based on the chemistry of liquid-liquid phase separation.
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Affiliation(s)
- Hang Zhai
- Department of Plant and Environmental SciencesWeizmann Institute of ScienceRehovotIsrael
| | - Tatyana Bendikov
- Department of Chemical Research SupportWeizmann Institute of ScienceRehovotIsrael
| | - Assaf Gal
- Department of Plant and Environmental SciencesWeizmann Institute of ScienceRehovotIsrael
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3
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Zhai H, Bendikov T, Gal A. Phase Separation of Oppositely Charged Polymers Regulates Bioinspired Silicification. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202115930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Hang Zhai
- Department of Plant and Environmental Sciences Weizmann Institute of Science Rehovot Israel
| | - Tatyana Bendikov
- Department of Chemical Research Support Weizmann Institute of Science Rehovot Israel
| | - Assaf Gal
- Department of Plant and Environmental Sciences Weizmann Institute of Science Rehovot Israel
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4
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Wang W, Wang Z. Functionalizing mesoporous silica with a nano metal–organic phosphonate towards mechanical‐robust, thermal‐resistant, and fire‐safety epoxy resin. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wenduo Wang
- Department of Polymeric Materials, School of Materials Science and Engineering Tongji University Shanghai China
| | - Zhengzhou Wang
- Department of Polymeric Materials, School of Materials Science and Engineering Tongji University Shanghai China
- Key Laboratory of Advanced Civil Engineering Materials Tongji University, Ministry of Education Shanghai China
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Efficient Removal of Cd(II) Using SiO 2-Mg(OH) 2 Nanocomposites Derived from Sepiolite. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17072223. [PMID: 32224977 PMCID: PMC7178199 DOI: 10.3390/ijerph17072223] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 03/07/2020] [Accepted: 03/16/2020] [Indexed: 11/17/2022]
Abstract
The pollution of Cadmium (Cd) species in natural water has attracted more and more attention due to its high cumulative toxicity. In the search for improved removal of cadmium from contaminated water, we characterized uptake on a recently identified nanomaterial (SiO2-Mg(OH)2) obtained by subjecting sepiolite to acid-base modification. The structural characteristics of SiO2-Mg(OH)2 were analyzed by means of SEM-EDS, Fourier Transform Infra-Red Spectroscopy (FTIR) and Powder X-ray Diffraction (PXRD). Static adsorption experiments were carried out to evaluate the effect of contact time, temperature, amount of adsorbent, and pH-value on the adsorption of Cd(II) by SiO2-Mg(OH)2. The results show that the pore structure of SiO2-Mg(OH)2 is well developed, with specific surface area, pore size and pore volume increased by 60.09%, 16.76%, and 43.59%, respectively, compared to natural sepiolite. After modification, the sepiolite substrate adsorbs Cd(II) following pseudo-second-order kinetics and a Langmuir surface adsorption model, suggesting both chemical and physical adsorption. At 298 K, the maximum saturated adsorption capacity fitted by Sips model of SiO2-Mg(OH)2 regarding Cd(II) is 121.23 mg/g. The results show that SiO2-Mg(OH)2 nanocomposite has efficient adsorption performance, which is expected to be a remediation agent for heavy metal cadmium polluted wastewater.
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Andersson Trojer M, Olsson C, Bengtsson J, Hedlund A, Bordes R. Directed self-assembly of silica nanoparticles in ionic liquid-spun cellulose fibers. J Colloid Interface Sci 2019; 553:167-176. [PMID: 31202053 DOI: 10.1016/j.jcis.2019.05.084] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 05/01/2019] [Accepted: 05/25/2019] [Indexed: 11/25/2022]
Abstract
The application range of man-made cellulosic fibers is limited by the absence of cost- and manufacturing-efficient strategies for anisotropic hierarchical functionalization. Overcoming these bottlenecks is therefore pivotal in the pursuit of a future bio-based economy. Here, we demonstrate that colloidal silica nanoparticles (NPs), which are cheap, biocompatible and easy to chemically modify, enable the control of the cross-sectional morphology and surface topography of ionic liquid-spun cellulose fibers. These properties are tailored by the silica NPs' surface chemistry and their entry point during the wet-spinning process (dope solution DSiO2 or coagulation bath CSiO2). For CSiO2-modified fibers, the coagulation mitigator dimethylsulphoxide allows for controlling the surface topography and the amalgamation of the silica NPs into the fiber matrix. For dope-modified fibers, we hypothesize that cellulose chains act as seeds for directed silica NP self-assembly. This results for DSiO2 in discrete micron-sized rods, homogeneously distributed throughout the fiber and for glycidoxy-surface modified DSiO2@GLYEO in nano-sized surface aggregates and a cross-sectional core-shell fiber morphology. Furthermore, the dope-modified fibers display outstanding strength and toughness, which are both characteristic features of biological biocomposites.
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Affiliation(s)
| | - Carina Olsson
- Department of Materials, Bio-based fibres, RISE IVF, 431 53 Mölndal, Sweden
| | - Jenny Bengtsson
- Department of Chemistry and Chemical Engineering, Forest Products and Chemical Engineering, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Arthur Hedlund
- Department of Chemistry and Chemical Engineering, Forest Products and Chemical Engineering, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Romain Bordes
- Department of Chemistry and Chemical Engineering, Applied Surface Chemistry, Chalmers University of Technology, 412 96 Göteborg, Sweden
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Enhanced Potential Toxic Metal Removal Using a Novel Hierarchical SiO2–Mg(OH)2 Nanocomposite Derived from Sepiolite. MINERALS 2019. [DOI: 10.3390/min9050298] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Clays are widely used as sorbents for heavy metals due to their high specific surface areas, low cost, and ubiquitous occurrence in most soil and sediment environments. However, the low loading capacity for heavy metals is one of their inherent limitations. In this work, a novel SiO2–Mg(OH)2 nanocomposite was successfully prepared via sequential acid–base modification of raw sepiolite. The structural characteristics of the resulting modified samples were characterized by a wide range of techniques including field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and nitrogen physisorption analysis. The results show that a hierarchical nanocomposite constructed by loading the Mg(OH)2 nanosheets onto amorphous SiO2 nanotubes can be successfully prepared, and the nanocomposite has a high surface area (377.3 m2/g) and pore volume (0.96 cm3/g). Batch removal experiments indicate that the nanocomposite exhibits high removal efficiency toward Gd(III), Pb(II), and Cd(II), and their removal capacities were greatly enhanced in comparison with raw sepiolite, due to the synergistic effect of the different components in the hierarchical nanocomposite. This work can provide a novel route toward a hierarchical nanocomposite by using clay minerals as raw material. Taking into account the simplicity of the fabrication route and the high loading capacities for heavy metals, the developed nanocomposite also has great potential applications in water treatment.
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Jin R. Understanding Silica from the Viewpoint of Asymmetry. Chemistry 2019; 25:6270-6283. [DOI: 10.1002/chem.201805053] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Ren‐Hua Jin
- Department of Material and Life ChemistryKanagawa University 3-2-7 Rokkakubashi Yokohama 221-8686 Japan
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Xu W, Wang G, Liu Y, Chen R, Li W. Zeolitic imidazolate framework-8 was coated with silica and investigated as a flame retardant to improve the flame retardancy and smoke suppression of epoxy resin. RSC Adv 2018; 8:2575-2585. [PMID: 35541479 PMCID: PMC9077404 DOI: 10.1039/c7ra12816a] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 01/04/2018] [Indexed: 11/21/2022] Open
Abstract
Synthesis of the core–shell structure of ZIF-8@SiO2 and its effect on the flame retardancy of epoxy resin.
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Affiliation(s)
- Wenzong Xu
- School of Materials Science and Chemical Engineering
- Anhui Jianzhu University
- Hefei
- People's Republic of China
| | - Guisong Wang
- School of Materials Science and Chemical Engineering
- Anhui Jianzhu University
- Hefei
- People's Republic of China
| | - Yucheng Liu
- School of Materials Science and Chemical Engineering
- Anhui Jianzhu University
- Hefei
- People's Republic of China
| | - Rui Chen
- School of Materials Science and Chemical Engineering
- Anhui Jianzhu University
- Hefei
- People's Republic of China
| | - Wu Li
- School of Materials Science and Chemical Engineering
- Anhui Jianzhu University
- Hefei
- People's Republic of China
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The Multiple Roles of Diatoms in Environmental Applications: Prospects for Sol-Gel Modified Diatoms. ADVANCES IN SOL-GEL DERIVED MATERIALS AND TECHNOLOGIES 2017. [DOI: 10.1007/978-3-319-50144-4_4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Liang C, Liu W, Zheng Y, Ji X, Li S, Yin W, Guo X, Song Z. Fractal nature of non-spherical silica particles via facile synthesis for the abrasive particles in chemical mechanical polishing. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.04.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Yin L, Wang S, Tanaka K, Fujihara S, Itai A, Den X, Zhang S. Silicon-mediated changes in polyamines participate in silicon-induced salt tolerance in Sorghum bicolor L. PLANT, CELL & ENVIRONMENT 2016; 39:245-58. [PMID: 25753986 DOI: 10.1111/pce.12521] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2013] [Revised: 01/31/2015] [Accepted: 02/05/2015] [Indexed: 05/03/2023]
Abstract
Silicon (Si) is generally considered a beneficial element for the growth of higher plants, especially under stress conditions, but the mechanisms remain unclear. Here, we tested the hypothesis that Si improves salt tolerance through mediating important metabolism processes rather than acting as a mere mechanical barrier. Seedlings of sorghum (Sorghum bicolor L.) growing in hydroponic culture were treated with NaCl (100 mm) combined with or without Si (0.83 mm). The result showed that supplemental Si enhanced sorghum salt tolerance by decreasing Na(+) accumulation. Simultaneously, polyamine (PA) levels were increased and ethylene precursor (1-aminocyclopropane-1-carboxylic acid: ACC) concentrations were decreased. Several key PA synthesis genes were up-regulated by Si under salt stress. To further confirm the role of PA in Si-mediated salt tolerance, seedlings were exposed to spermidine (Spd) or a PA synthesis inhibitor (dicyclohexylammonium sulphate, DCHA) combined with salt and Si. Exogenous Spd showed similar effects as Si under salt stress whereas exogenous DCHA eliminated Si-enhanced salt tolerance and the beneficial effect of Si in decreasing Na(+) accumulation. These results indicate that PAs and ACC are involved in Si-induced salt tolerance in sorghum and provide evidence that Si plays an active role in mediating salt tolerance.
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Affiliation(s)
- Lina Yin
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi, 712100, China
- Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi, 712100, China
- Faculty of Agriculture, Tottori University, Koyama Minami 4-101, Tottori, 680-8533, Japan
| | - Shiwen Wang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi, 712100, China
- Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi, 712100, China
| | - Kiyoshi Tanaka
- Faculty of Agriculture, Tottori University, Koyama Minami 4-101, Tottori, 680-8533, Japan
| | - Shinsuke Fujihara
- NARO Agricultural Research Center, Kannondai 3-1-1, Tsukuba, 305-8666, Japan
| | - Akihiro Itai
- Faculty of Agriculture, Tottori University, Koyama Minami 4-101, Tottori, 680-8533, Japan
| | - Xiping Den
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi, 712100, China
- Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi, 712100, China
| | - Suiqi Zhang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi, 712100, China
- Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi, 712100, China
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Toumi N, Bégu S, Cacciaguerra T, Galarneau A, Azaïs T, Bengueddach A, Renzo FD. Phospholipid–silica mesophases formed in hydroalcoholic solution as precursors of mesoporous silica. NEW J CHEM 2016. [DOI: 10.1039/c5nj03563e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The fusion of lipid bilayers in sponge silica–lecithin composites is favoured by natural cosurfactants-induced local opposite curvatures.
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Affiliation(s)
- Nadia Toumi
- Institut Charles Gerhardt Montpellier-MACS
- UMR 5253 CNRS-UM-ENSCM
- ENSCM
- 34296 Montpellier
- France
| | - Sylvie Bégu
- Institut Charles Gerhardt Montpellier-MACS
- UMR 5253 CNRS-UM-ENSCM
- ENSCM
- 34296 Montpellier
- France
| | - Thomas Cacciaguerra
- Institut Charles Gerhardt Montpellier-MACS
- UMR 5253 CNRS-UM-ENSCM
- ENSCM
- 34296 Montpellier
- France
| | - Anne Galarneau
- Institut Charles Gerhardt Montpellier-MACS
- UMR 5253 CNRS-UM-ENSCM
- ENSCM
- 34296 Montpellier
- France
| | - Thierry Azaïs
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Collège de France
- Laboratoire de Chimie de la Matière Condensée de Paris
| | - Abdelkader Bengueddach
- Laboratory of Materials Chemistry
- Faculty of Applied and Exact Sciences
- University Oran 1-Ahmed Benbella
- Oran
- Algeria
| | - Francesco Di Renzo
- Institut Charles Gerhardt Montpellier-MACS
- UMR 5253 CNRS-UM-ENSCM
- ENSCM
- 34296 Montpellier
- France
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Jiang SD, Bai ZM, Tang G, Song L, Stec AA, Hull TR, Hu Y, Hu WZ. Synthesis of mesoporous silica@Co-Al layered double hydroxide spheres: layer-by-layer method and their effects on the flame retardancy of epoxy resins. ACS APPLIED MATERIALS & INTERFACES 2014; 6:14076-14086. [PMID: 25062606 DOI: 10.1021/am503412y] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Hierarchical mesoporous silica@Co-Al layered double hydroxide (m-SiO2@Co-Al LDH) spheres were prepared through a layer-by-layer assembly process, in order to integrate their excellent physical and chemical functionalities. TEM results depicted that, due to the electrostatic potential difference between m-SiO2 and Co-Al LDH, the synthetic m-SiO2@Co-Al LDH hybrids exhibited that m-SiO2 spheres were packaged by the Co-Al LDH nanosheets. Subsequently, the m-SiO2@Co-Al LDH spheres were incorporated into epoxy resin (EP) to prepare specimens for investigation of their flame-retardant performance. Cone results indicated that m-SiO2@Co-Al LDH incorporated obviously improved fire retardant of EP. A plausible mechanism of fire retardant was hypothesized based on the analyses of thermal conductivity, char residues, and pyrolysis fragments. Labyrinth effect of m-SiO2 and formation of graphitized carbon char catalyzed by Co-Al LDH play pivotal roles in the flame retardance enhancement.
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Affiliation(s)
- Shu-Dong Jiang
- State Key Laboratory of Fire Science, University of Science and Technology of China , 96 Jinzhai Road, Hefei, Anhui 230026, China
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