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SSRN 2023年

作者： Li, Jun Liang, Zheng Song, Jialing Jiang, Nan Yan, Mengying Huang, Manhong College of Environmental Science and Engineering Key Laboratory of Science & Technology of Eco-Textile Ministry of Education Donghua University Shanghai201620 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China

Reverse osmosis (RO) alone has a low water recovery efficiency because of membrane fouling and limited operating pressure. In this study, for the first time, combined reverse osmosis-forward osmosis (RO-FO) process was used to improve the water recovery efficiency of the secondary effluent in printing and dyeing wastewater. Effects of operating pressure and pH on RO-FO’s water recovery and removal efficiencies were investigated. Results showed that the optimum conditions were operating pressure of 1.5 MPa and feed solution pH of 9.0. Under the optimal operating conditions, most of the organic and inorganic substances in the wastewater can be removed, and the rejection of total organic carbon (TOC), Sb, Ca and K were 98.7, 99.3, 97.0 and 92.7%, respectively. Fluorescence excitation-emission matrics coupled with parallel factor (EEM-PARAFAC) analysis indicted two components (tryptophan and tyrosine) in influent were effectively rejected by the hybrid process. The maximum water recovery (Rw, max) efficiency of RO-FO could reach 95%, which was higher than the current single RO process (75%). Mechanism investigation showed the RO-FO process recovered more water with higher efficiency in comparison with RO alone, which was ascribed to high driving force and no need to recovery draw solution in RO-FO process. This research provided a feasible strategy to effectively recovery water from printing and dyeing wastewater. © 2023, The Authors. All rights reserved.

关键词： Amino acids

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WiFo: wireless foundation model for channel prediction

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science China(Information sciences) 2025年第6期 372-384页

作者： Boxun LIU Shijian GAO Xuanyu LIU Xiang CHENG Liuqing YANG State Key Laboratory of Photonics and Communications School of Electronics Peking University Internet of Things Thrust The Hong Kong University of Science and Technology (Guangzhou) Department of Electronic and Computer Engineering and Department of Civil and Environmental Engineering The Hong Kong University of Science and Technology

Channel prediction permits to acquire channel state information(CSI) without signaling overhead. However,almost all existing channel prediction methods necessitate the deployment of a dedicated model to accommodate a specific configuration. Leveraging the powerful modeling and multi-task learning capabilities of foundation models, we propose the first space-time-frequency(STF) wireless foundation model(WiFo) to address time-frequency channel prediction tasks in a unified manner. Specifically, WiFo is initially pre-trained over massive and extensive diverse CSI datasets. Then, the model will be instantly used for channel prediction under various CSI configurations without any fine-tuning. We propose a masked autoencoder(MAE)-based network structure for WiFo to handle heterogeneous STF CSI data, and design several mask reconstruction tasks for self-supervised pre-training to capture the inherent 3D variations of CSI. To fully unleash its predictive power, we build a large-scale heterogeneous simulated CSI dataset consisting of 160k CSI samples for *** validate its superior unified learning performance across multiple datasets and demonstrate its state-of-the-art(SOTA) zero-shot generalization performance via comparisons with other full-shot baselines.

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Coupling highly reactive RuP2 with amorphous WP for boosting alkaline hydrogen evolution

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SSRN 2024年

作者： Wang, Jing Zhou, Yingshuang Ji, Xing Wang, Zhenzhen Fang, Zefeng Lu, Bin Guo, Junjie Wei, Zhongzhe Institute of Advanced Magnetic Materials College of Materials & Environmental Engineering Hangzhou Dianzi University Hangzhou310018 China Key laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education Taiyuan University of Technology Taiyuan030024 China Institute of Industrial Catalysis College of Chemical Engineering Zhejiang University of Technology Hangzhou310032 China

Electrochemical water splitting stands out as an environmentally benign approach for generating green H2 through the harnessing of intermittent energy derived from renewable sources. However, the slow water dissociation kinetics hinders the commercialization for water-alkali electrolyzer. In this study, we synthesize a novel porous nanocomposite (RuP2/WP/PNC3-A) combined with RuP2 and amorphous WP by a facile and eco-friendly strategy. Detailed research results demonstrate that biomass-derived phytic acid not only promotes the formation of active metal phosphides, but also serves as a pore-forming agent to assist in the constructing a hierarchical porous structure, significantly enhancing the mass and electron transfer capability. Particularly noteworthy is that WP prevents the aggregation of RuP2. During the post-treatment process more protected RuP2 components are released and meanwhile leads to the conversion of WP from crystalline to amorphous. Benefitting from the applicable H adsorption ability of RuP2 and the enhanced H2O adsorption, dissociation capacity by amorphous WP, RuP2/WP/PNC3-A exhibits astonishing hydrogen evolution reaction (HER) performance, requiring an exceedingly low overpotential (only 24 mV) under 10 mA cm-2, featuring small Tafel slope (64.6 mV dec-1), and demonstrating excellent durability. © 2024, The Authors. All rights reserved.

关键词： Phosphorus compounds

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A comprehensive construction of the domain ontology for stratigraphy

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Geoscience Frontiers 2023年第5期14卷 353-361页

作者： Huiqing Xu Yingying Zhao Hao Huang Shaochun Dong Yukun Shi Chunju Huang Huaichun Wu Zhiqi Qian Qiang Fang Huaguo Wen Zhongtang Su Shuang Dai Ronghua Wang Chao Li Chao Sun Junxuan Fan School of Earth Sciences and Engineering and Frontiers Science Center for Critical Earth Material Cycling Nanjing UniversityNanjing 210023China Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China State Key Laboratory of Biogeology and Environmental Geology School of Earth SciencesChina University of GeosciencesWuhan 430074China State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesBeijing 100083China School of Ocean Sciences China University of GeosciencesBeijing 100083China State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation&Institute of Sedimentary Geology Chengdu University of TechnologyChengdu 610059China School of Earth Sciences and Key Laboratory of Mineral Resources in Western China(Gansu Province) Lanzhou UniversityLanzhou 730000China Key Laboratory of Strategic Mineral Resources of the Upper Yellow River Ministry of Natural ResourcesLanzhou 730000China State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and PaleoenvironmentChinese Academy of SciencesNanjing 210008China Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China State Key Laboratory for Mineral Deposits Research Nanjing UniversityNanjing 210023China

Stratigraphic knowledge,the cornerstone of geoscience,needs to be represented by the Knowledge Graph based upon ontology,in order to apply the state-of-the-art big-data *** study aims to comprehensively construct the ontologies for the stratigraphic *** has been achieved by a federated,crowd intelligence-based collaboration among domain experts of major stratigraphic *** initial step is to enumerate key terms from authoritative references and incorporate them into the Geoscience Professional Knowledge Graphs(GPKGs)of Deep-time Digital Earth *** this process,semantic heterogeneities were meticulously addressed by professional judgement aided by an automatic detection of Homonyms at the GPKGs ***,these terms were further differentiated as either classes or properties and arranged in a hierarchical framework in a top-down ***,seven ontologies are constructed for major stratigraphic branches,i.e.,Lithostratigraphy,Biostratigraphy,Chronostratigraphy,Chemostratigraphy,Magnetostratigraphy,Cyclostratigraphy and Sequence *** ontology of Biostratigraphy,among them,is elaborated here,as no biostratigraphic ontology has been attempted before to our *** constructed biostratigraphic ontology comprises following major root classes:Fossil,Biostratigraphic unit,Biostratigraphic ***,they contribute to the eventual dating and correlating of strata in another root class:Biostratigraphic *** summary,the achievements of this study are probably heretofore the most comprehensive ontologies for the stratigraphic ***,a proto model of semantic search engine was conceived to discuss potential application of our work for better querying stratigraphic references,utilizing the semantic liaison of the classes in the constructed ontologies.

关键词： Domain ontology Stratigraphy Biostratigraphic unit Biostratigraphic horizon Fossil

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Rgo Doped Mofs-Derived Cuo Nanocomposites as Flexible Room-Temperature Sensors for Ppb-Level H2s Detection

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SSRN 2024年

作者： Huang, Hao Zhao, Jinrong Pan, Zhiguang Wang, Tianqi Yu, Hui Li, Feng Dong, Xiangting Liu, Zelun Yang, Ying School of Chemistry and Environmental Engineering Key Laboratory of Applied Chemistry and Nanotechnology University of Jilin Province Changchun University of Science and Technology Changchun130022 China Affiliated Middle School with Jilin University Changchun130022 China

Metal semiconductor oxides (MOSs) derived from metal-organic frameworks (MOFs) possess unique internal structure that offer great potential for development in the sensing fields. In this study, we synthesized reduced graphene oxide (rGO) doped nanocubic CuO with Cu(Ⅱ)-BTC as a sacrificial template. The rGO/CuO-10 flexible sensor exhibits 30-fold improvement in response to 10 ppm H2S at room temperature (RT) compared to pure CuO and theoretical detection limit down to 10 ppb. The sensor also maintains good stability when bent at different angles. The response enhancement can be owed to the composition of p-p heterostructure between rGO and CuO, the two-dimensional layered structure of rGO and the special morphology of CuO. Consequently, this study provides insights into preparation of flexible sensors based on MOFs-derived MOSs to detect H2S at RT. © 2024, The Authors. All rights reserved.

关键词： Copper oxides

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Transient Electromagnetic Simulation for Periodic Structures with a Modified Parallel DGTD Method

Transient Electromagnetic Simulation for Periodic Structures...

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IEEE International Wireless Symposium (IWS)

作者： Chunyu Li Zhou Dai Tiancheng Zhang Huaguang Bao Yinghui Zhou Zheng Sun Dazhi Ding Nanjing University of Science and Technology Nanjing China Nanjing Electronic Devices Institute Nanjing China National Key Laboratory on Electromagnetic Environmental Effects and Electro-optical Engineering Army Engineering University Nanjing China

Due to natural block diagonal mass matrices, discontinuous Galerkin time domain (DGTD) method provides convenient condition for parallel computation. However, when the number of processes increases, the traffic between processes gradually increases, leading to the sharp decline of the parallelism efficiency. To solve these problems, non-blocking communication technology with the math kernel library (MKL) scheme is proposed to improve the efficiency of message passing interface (MPI) parallel computing. Thus, a typical periodic electromagnetic structure - frequency selective surface (FSS) is simulated, which achieves an acceleration ratio of more than 1.8 times, and further improves the performance of the DGTD algorithm.

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Tuning the strength of built-in electric field in 2D/2D g-C_(3)N_(4)/MS_(2) and g-C_(3)N_(4)/ZrS_(2) S-scheme heterojunctions by nonmetal doping

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Journal of Materiomics 2021年第5期7卷 988-997页

作者： Bicheng Zhu Haiyan Tan Jiajie Fan Bei Cheng Jiaguo Yu Wingkei Ho State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology122 Luoshi RoadWuhan430070China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou450001China Department of Science and Environmental Studies The Education University of Hong KongTai PoN.T.Hong Kong999077China

Single photocatalysts usually exhibit unsatisfactory performance due to the serious recombination of photogenerated electron‒hole *** two photocatalysts to construct S-scheme heterojunction could solve this *** S-scheme mechanism,the interfacial built-in electric field(IEF)provides a vital driving force for efficient charge *** the IEF is a feasible strategy to further improve the photocatalytic ***,a novel idea of tuning the strength of IEF in 2D/2D graphitic carbon nitride(g-C_(3)N_(4))/MS2(M=Sn,Zr)S-scheme heterojunctions by nonmetal doping was developed by employing density functional theory *** nonmetal elements(O,P,and S)were severally introduced into g-C_(3)N_(4)/MS_(2) *** density difference suggested that O and S doping led to increased interfacial electron transfer,while P doping had minimal *** expected,the calculated field strength of O-and S-doped g-C_(3)N_(4)/MS_(2) composites was significantly larger than that of pristine and P-doped g-C_(3)N_(4)/MS_(2) ***,O and S doping endowed g-C_(3)N_(4)/MS_(2) Sscheme heterojunctions with enhanced IEF and more thorough charge ***,the experimentally synthesized O-C_(3)N_(4)/ZrS_(2) composite exhibited better photocatalytic H2-production activity than g-C_(3)N_(4)/ZrS_(2) *** work proposed an original idea of employing proper nonmetal doping to magnify the advantage of S-scheme heterojunction in accelerating charge separation.

关键词： Graphitic carbon nitride Density functional theory Field strength Photocatalysis Van der Waals heterostructure

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Hollow CoP/carbon as an efficient catalyst for the peroxymonosulfate activation derived from phytic acid assisted metal-organic framework

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Chemosphere 2024年 355卷 141775页

作者： Khan, Muhammad Abdul Nasir Klu, Prosper Kwame Xiao, Chengming Qi, Junwen Noor, Tayyaba Sheikh, Zeshan Kalwar, Kaleemullah Li, Jiansheng Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological Engineering Nanjing University of Science and Technology Nanjing210094 China Islamabad44000 Pakistan Department of Agricultural Engineering Ho Technical University P.O. Box HP217 Ho Ghana

The catalyst's composition and rationally designed structure is significantly interlinked with its performance for wastewater remediation. Here, a novel hollow cobalt phosphides/carbon (HCoP/C) as an efficient catalyst for activating peroxymonosulfate (PMS) was prepared. The ZIF-67 was synthesized first, followed by phytic acid (PA) etching and then heat treatment was used to get HCoP/C. The PA was used as an etching agent and a source of phosphorus to prepare HCoP/C. To analyze catalytic performance, another solid cobalt phosphides/carbon (SCoP/C) catalyst was prepared for comparison. In contrast to SCoP/C, the HCoP/C exhibited higher catalytic efficiency when used to activate PMS to degrade Bisphenol A (BPA). The results showed that about 98 % of targeted pollutant BPA was removed from the system in 6 min with a rate constant of 0.78 min−1, which was 4 times higher than the solid structure catalyst. The higher catalytic performance of HCoP/C is attributed to its hollow structure. In the study, other parameters such as BPA concentration, temperature, pH, and different catalyst amount were also tested. Moreover, the electron paramagnetic resonance (EPR) and radical quenching analysis confirmed that sulfate radicals were dominant in the HCoP/C/PMS system. © 2024 Elsevier Ltd

关键词： Cobalt compounds

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Impacts of salicylic acid on the morpho-physiological and biochemical characteristics of Ceratonia siliqua L. vitroseedlings under salt stress

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Vegetos 2024年 1-11页

作者： Youssara, Ichraka Tabi, Salma Manssoury, Najat El Aissam, Salama Koufan, Meriyem Natural Resources and Local Products Research Unit Regional Center of Agricultural Research of Agadir National Institute of Agricultural Research Avenue Ennasr Rabat Morocco Center of Agrobiotechnology and bioengineering CNRST Labeled Research Unit (Center AgroBiotech-URL- CNRST-05) Sciences and Technologies Faculty Cadi Ayyad University Marrakesh Morocco Environmental Ecological and Agro-Industrial Engineering Laboratory Department of Life Sciences Faculty of Science and Technology Sultan Moulay Slimane University Beni-Mellal Morocco

Salinity has emerged as a significant global challenge, severely limiting the productivity of agricultural crops. This problem has been further exacerbated by climate change, which amplifies its impact. Unfortunately, the carob tree (Ceratonia siliqua), despite its importance in the Mediterranean region, its often cultivated on saline soils, which can negatively affect its productivity. Currently, various approaches are being explored to mitigate the detrimental effects of salinity on plants. Among the most recommended solutions is the use of phytohormones such as salicylic acid. Salicylic acid is an endogenous growth hormone known for its ability to enhance plant resistance to various types of abiotic stress. Furthermore, its effect has already been tested on several species. The aim of this study is to evaluate the response of Ceratonia siliqua vitroplants, derived from seedlings, to salt stress (80 mM, 240 mM) in the presence of salicylic acid (0.5 mM). The results indicated that salt stress led to an increased latency period, a 50% reduction in germination rate, and diminished growth and leaf area incarob vitroseedlings. Additionally, it caused disruption of photosynthesis. Salt stress also affected the levels of osmoprotectants by increasing their synthesis, such as proline, soluble sugars, and glycine-betaine. It also affected the content of polyphenols and the antioxidant activity of the plant. The introduction of salicylic acid in the presence of high stress (240 mM) led to a decrease in the latency period of vitroseedlings by 1 day. Furthermore, it increased the germination rate from 50 to 66.67%. As for other morphological parameters, a slight decrease in aerial part and root length, internode spacing, and leaf area was observed. Concerning the biochemical parameters, the application of salicylic acid under high-stress conditions resulted in a reduction of glycine-betaine and soluble sugar content, decreasing from 0.28 to 0.22 mg·g-1 DM and from 1.89 to 1.

关键词： Carob tree (Ceratonia siliqua) In vitro Salicylic acid (SA) Salt stress Seedlings

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Insights into electrochemical oxidation of tris(2-butoxyethyl) phosphate (TBOEP) in aquatic media: Degradation performance, mechanisms and toxicity changes of intermediate products

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Chemosphere 2023年 343卷 140267页

作者： Luo, Zhujun Huang, Wantang Yu, Wenyan Tang, Shaoyu Wei, Kun Yu, Yuanyuan Xu, Lei Yin, Hua Niu, Junfeng Research Center for Eco-Environmental Engineering School of Environment and Civil Engineering Dongguan University of Technology Dongguan523808 China China Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters School of Environment and Energy South China University of Technology Guangdong Guangzhou510006 China College of Environmental Science and Engineering North China Electric Power University Beijing102206 China

Tris (2-butoxyethyl) phosphate (TBOEP) has gained significant attention due to its widespread presence and potential toxicity in the environment. In this study, the degradation of TBOEP in aquatic media was investigated using electrochemical oxidation technology. The anode Ti/SnO2–Sb/La–PbO2 demonstrated effective degradation performance, with a reaction constant (k) of 0.6927 min−1 and energy consumption of 1.24 kW h/m3 at 10 mA/cm2. CV tests, EPR tests, and quenching experiments confirmed that indirect degradation is the main degradation mechanism and ·OH radicals were the predominant reactive species, accounting for up to 93.8%. The presence of various factors, including Cl−, NO3−, HCO3− and humic acid (HA), inhibited the degradation of TBOEP, with the inhibitory effect dependent on the concentrations. A total of 13 intermediates were identified using UPLC-Orbitrap-MS/MS, and subsequent reactions led to their further degradation. Two main degradation pathways involving bond breaking, hydroxylation, and oxidation were proposed. Both Flow cytometry and the ECOSAR predictive model indicated that the intermediates exhibited lower toxic than the parent compound, resulting in a high detoxification rate of 95.9% for TBOEP. Although the impact of TBOEP on the phylum-level microbial community composition was found to be insignificant, substantial alterations in bacterial abundance were noted when examining the genus level. The dominant genus Methylotenera, representing 17.4% in the control group, decreased to 6.9% in the presence of TBOEP and slightly increased to 8.7% in the 4-min exposure group of degradation products. Electrochemical oxidation demonstrated its effectiveness for the degradation and detoxification of TBOEP in aqueous solutions, while it is essential to consider the potential impact of degradation products on sediment microbial communities. © 2023 Elsevier Ltd

关键词： Electrochemical oxidation

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