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SSRN 2024年

作者： Guo, Qing Liu, Peng Ke, Yubin Li, Wanwu Wang, Haoyu Zhang, Zhao Yu, Chenyang Bao, Changjiang Abbas, Muhammad Tahir Song, Ruiqi Guan, Ziqi Zhang, Zhe Zhang, Kun Wang, Yanxu Wang, Xiaolei Li, Bing Zhao, Xueting College of Physical Science and Technology Bohai University Jinzhou121013 China Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences 72 Wenhua Road Liaoning Shenyang110016 China School of Materials Science and Engineering University of Science and Technology of China 72 Wenhua Road Liaoning Shenyang110016 China College of Environmental and Chemical Engineering Shenyang University of Technology Shenyang110870 China China Spallation Neutron Source China School of Science

The magnetic properties and magnetocaloric effects of rare earth complex NH4RE3F10 (RE = Tb, Dy, Ho and Er) were investigated firstly in NH4-RE-F system. The rare earth complexes crystallize in γ-KYb3F10-type crystal structure with space group Fm-3m. The χ(T) curves show that the materials exhibit a paramagnetic-like behavior and high thermal reversibility. The Curie-Weiss fitting gives that there is an antiferromagnetic interaction between the magnetic moments of RE ions in these materials and the RE atoms may be formed covalent bonds with ligands through the 4f electrons. Magnetic hysteresis was not observed in their M(H) curves at 2 K. Based on the magnetic isotherms data, the values of -ΔSm(T) in the cases of ΔH = 10, 20 and 50 kOe were calculated. The most excellent MCE material among them is NH4Dy3F10 and its -ΔSm(T) is 14.15 and 18.20 J/kg·K under ΔH = 20 and 50 kOe, respectively. The value of NH4Dy3F10 in ΔH = 20 kOe is comparable with that of the commercialized material GGG above 2 K. It indicates that the NH4Dy3F10 material may be a candidate of cryogenic magnetic coolant working in the permanent magnet environment. © 2024, The Authors. All rights reserved.

关键词： Magnetic susceptibility

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Role of molybdenum compounds in enhancing denitrification: Structure-activity relationship and the regulatory mechanisms

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Chemosphere 2024年 367卷 143433页

作者： Zhang, Ying Sun, Hejiao Lu, Caicai Li, Haibo Guo, Jianbo Experimental Education Center Beijing Normal University at Zhuhai Jinfeng Road 18 Zhuhai519000 China Deep Space Exploration Laboratory/School of Earth and Space Sciences University of Science and Technology of China Hefei230026 China School of Environmental and Municipal Engineering Tianjin Key Laboratory of Aquatic Science and Technology Tianjin Chengjian University Jinjing Road 26 Tianjin300384 China School of Civil Engineering and Architecture Taizhou University Zhejiang Taizhou318000 China

The effect and regulatory mechanisms of molybdenum compounds (MoO2, MoS2, MoSe2 and MoSi2) on denitrification were investigated by structure-activity relationships, electrochemical characteristics, microbial metabolism analysis and bacterial community distribution. All the assessed molybdenum compounds exhibited the enhancement effect on denitrification, in the order of MoS2 > MoSi2 > MoSe2 > MoO2, with MoS2 increasing 7.08-fold in 12 h. Analysis of structure-activity relationships suggested that the molybdenum compounds with lower negative redox potential and higher redox reversibility were favorable for promoting denitrification. According to the morphology observation, the interactions between Mo compounds and denitrifying bacteria may be beneficial to extracellular electron transfer. Molybdenum compounds with electron transfer capability facilitated an increase in electron capacitance from 835.1 to 1011.3 μF, promoting the electron exchange rate during denitrification. In the denitrification electron transport chain, the molybdenum compounds upregulated nicotinamide adenine dinucleotide and denitrifying enzyme activity, as well as facilitated the abundance of quinone pools, ATP translocation, and cytochrome c related proteins. Moreover, Mo compounds enriched functional bacteria such as electroactive bacteria and denitrifying functional bacteria. Notably, Mo ions in molybdenum compounds may provide active sites for nitrate reductase, optimizing the electron distribution of the denitrification process and thus improved the partial denitrification efficiency. This work aimed to further understand the regulatory mechanisms of molybdenum on denitrification electron transfer in the compound state and to anticipate the catalytic role of Mo compounds for sustainable water treatment. © 2024 Elsevier Ltd

关键词： Nitrates

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Experimental Investigation on the Behavior of Cyclic-Laterally Loaded Lattice-Shaped Diaphragm Wall in Soft Soil

SSRN

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SSRN 2024年

作者： Wu, Jiujiang Hu, Haodong Pu, Longjun Zhang, Yang Yin, Jin Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Southwest University of Science and Technology Sichuan Mianyang621010 China Department of Civil and Environmental Engineering Western University LondonN6A 5B9 Canada

Large-span cross-river and sea bridge projects often expose the substructure to significant and complex long-term cyclic loads, driven by factors like wind and waves. The lattice-shaped diaphragm wall (LSDW) foundation, a novel and promising solution for large-span bridges, offers advantages in construction safety, adaptability, cost-effectiveness, and strong stiffness. This study investigates the bearing behavior of LSDW under horizontal cyclic loads in soft soils. The paper introduces a detailed methodology using a dual-layer wall setup and mathematical calculations to measure key parameters such as wall bending moments, displacements, and soil pressures. The research explores LSDW behavior throughout cyclic loadings, revealing trends in soil compression, densification, and displacement growth rates. Analysis of cumulative displacement and rotation patterns underscores the influence of load amplitudes and soil compaction. The findings highlight the significant impact of cyclic loading cycles on cumulative displacement, with curve fitting revealing a logarithmic function with strong correlation. Additionally, the study delves into the reduction in lateral soil resistance with increasing cyclic loads, proposing cyclic weakening factors for predicting soil pressure distribution and cyclic p-y curves. This research provides valuable insights for the comprehensive analysis and prediction of LSDW performance under horizontal cyclic loading, with potential applications in deep-water bridge projects. © 2024, The Authors. All rights reserved.

关键词： Soils

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An alternative,zeaxanthin epoxidase-independent abscisic acid biosynthetic pathway in plants

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Molecular Plant 2022年第1期15卷 151-166页

作者： Kun-Peng Jia Jianing Mi Shawkat Ali Hajime Ohyanagi Juan C.Moreno Abdugaffor Ablazov Aparna Balakrishna Lamis Berqdar Alessia Fiore Gianfranco Diretto Claudio Martínez Angel R.de Lera Takashi Gojobori Salim Al-Babili Biological and Environmental Sciences and Engineering Division Center for Desert AgricultureThe BioActives LabKing Abdullah University of Science and TechnologyThuwal 23955-6900Saudi Arabia State Key Laboratory of Cotton Biology Henan Joint International Laboratory for Crop Multi-Omics ResearchSchool of Life SciencesHenan UniversityJinming RoadKaifeng 475004China Biological and Environmental Sciences and Engineering Division Computational Bioscience Research CenterKing Abdullah University of Science and TechnologyThuwal 23955-6900Saudi Arabia Italian National Agency for New Technologies Energy and Sustainable Economic Development00123 RomeItaly Universidade de Vigo Facultade de Química and CINBIO36310 VigoSpain Agriculture and Agri-Food Canada Kentville Research and Development Center32 Main StreetKentvilleNS B4N1J5Canada

Abscisic acid(ABA)is an important carotenoid-derived phytohormone that plays essential roles in plant response to biotic and abiotic stresses as well as in various physiological and developmental *** Arabidopsis,ABA biosynthesis starts with the epoxidation of zeaxanthin by the ABA DEFICIENT 1(ABA1)enzyme,leading to epoxycarotenoids;e.g.,*** oxidative cleavage of 9-cis-epoxycaro-tenoids,a key regulatory step catalyzed by 9-C/S-EPOXYCAROTENOID DIOXYGENASE,forms xanthoxin,which is converted in further *** mediated by ABA DEFICIENT 2(ABA2),ABA DEFICIENT 3(ABA3),and ABSCISIC ALDEHYDE OXIDASE 3(AAO3)into *** combining genetic and biochemical approaches,we unravel here an ABA1-independent ABA biosynthetic pathway starting upstream of *** iden-tified the carotenoid cleavage products(i.e.,apocarotenoids,β-apo-11-carotenal,9-cis-β-apo-11-carotenal,3-OH-β-apo-11-carotenal,and 9-cis-3-OH-β-apo-11-carotenal)as intermediates of this ABA1-independent ABA biosynthetic *** labeled compounds,we showed thatβ-apo-11-carotenal,9-cis-β-apo-11-carotenal,and 3-OH-β-apo-11-carotenal are successively converted into 9-cis-3-OH-β-apo-11-carotenal,xanthoxin,and finally into ABA in both Arabidopsis and *** applied to Arabidopsis,theseβ-apo-11-carotenoids exert ABA biological functions,such as maintaining seed dormancy and inducing the expression of ABA-responsive ***,the transcdptomic analysis revealed a high overlap of differentially expressed genes regulated byβ-apo-11-carotenoids and ABA,suggesting thatβ-apo-11-carot-enoids exert ABA-independent regulatory *** together,our study identifies a biological function for the common plant metabolites,β-apo-11-carotenoids,extends our knowledge about ABA biosynthesis,and provides new insights into plant apocarotenoid metabolic networks.

关键词： seed germination apocarotenoids ABA ABA biosynthesis ABA1 carotenoids ultra-high-performance liquid chromatography-mass spectrometry Arabidopsis thaliana

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A Comprehensive Review on Fabrication and Structural Design of Polymer Composites for Wearable Pressure Sensors

Polymer Science & Technology

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Polymer science & technology 2025年第1期1卷 3-24页

作者： Kangqi Chang Chao Zhang Tianxi Liu Key Laboratory of Synthetic and Biological Colloids Ministry of Education School of Chemical and Material Engineering Jiangnan University Wuxi 214122 China；Institute of Technology for Future Industry Shenzhen Institute of Information Technology Shenzhen 518172 China；Guangdong Zhongyi Environmental Protection Co. Ltd. Shanwei 516723 China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 China Key Laboratory of Synthetic and Biological Colloids Ministry of Education School of Chemical and Material Engineering Jiangnan University Wuxi 214122 China

Pressure sensors possess significant application potential across various fields including personal healthcare monitoring, human–machine interfaces, bioelectronics, and medical devices. Extensive research has been dedicated to the creation of advanced, high-performance pressure sensors. This review examines recent advancements in flexible pressure sensors employing polymer composites as the fundamental components for force response. This review begins by outlining essential sensor types and their key parameters, followed by an in-depth exploration of fabrication methods and sensing mechanism. Subsequently, applications of pressure sensors in pressure mapping, motion detection, and healthcare are thoroughly discussed. Finally, this review summarizes the remaining challenges and future directions for polymer composite, aiming to advance the developments of high-performance wearable pressure sensors.

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Sequential Adsorption- Dehalogenation Removal of Pfoa and 2,4,6-Tcp with F-Ctf as the Absorbent and Hydrated Electron as the Reduction Species

SSRN

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SSRN 2024年

作者： An, Fengxia Wang, Guangyan Wang, Shuyun Chen, Huan Liu, Jingliang China Energy Science and Technology Research Institute Co. Ltd. Nanjing210023 China Key Laboratory of Energy Thermal Conversion and Control Ministry of Education School of Energy and Environment Southeast University Nanjing210096 China Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse School of Environmental and Biological Engineering Nanjing University of Science and Technology Nanjing210094 China School of Environmental Science Nanjing XiaoZhuang University Nanjing211171 China

Perfluorooctanoic acid (PFOA) and 2,4,6-trichlorophenol (2,4,6-TCP) were typical POPs in water. In this study, fluorine-doped covalent triazine framework (F-CTF) was synthesized using an ionothermal method, and the adsorption behavior for PFOA and 2,4,6-TCP on F-CTF was investigated using batch experiments and adsorption kinetic tests. Characterization results showed that the large surface area and abundant pore structure of F-CTF provide a large number of adsorption sites for PFOA and 2, 4, 6-TCP. Batch adsorption tests showed that F-CTF adsorbent exhibited high adsorption affinity to PFOA and 2,4,6-TCP, and the adsorption ability could be described well by the Langmuir adsorption model. The adsorption process obeyed the pseudo-second-order kinetics. The adsorption mechanism including electrostatic attraction, hydrophobic interaction, and ion-dipole interaction was further confirmed by pH and ionic strength experiments. Additionally, the reduction of PFOA and 2,4,6-TCP in the desorption solution was achieved in the UV/Na2SO3/KI system and the influence factors were further studied. The eaq− was the main active species for the high reduction of PFOA and 2,4,6-TCP in the UV/Na2SO3/KI system. © 2024, The Authors. All rights reserved.

关键词： Adsorption

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Effect of boron precursor ultra-sonicated in hexane medium on the critical current density of sintered bulk MgB2 34

Effect of boron precursor ultra-sonicated in hexane medium o...

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34th International Symposium on Superconductivity, ISS 2021

作者： Arvapalli, Sai Srikanth Jirsa, Milos Murakami, Masato Miryala, Muralidhar Materials for Energy and Environmental Laboratory Superconducting Materials Group College of Engineering Graduate School of Science & Engineering Shibaura Institute of Technology 3-7-5 Toyosu Koto-ku Tokyo135-8548 Japan Institute of Physics Ascr Na Slovance 2 Praha8 18221 Czech Republic

The large coherence length of MgB2 material allows large defects such as grain boundaries to act as strong pinning centres. As an alternative to the high-cost commercial nano precursors, we used a novel ultra-sonication technique to refine a cheap rough boron precursor and avoid the use of the expensive commercial nano amorphous boron powder. Recent novel low-cost ultra-sonication technique proved to improve the critical current density, J c, of MgB2. Here, we discuss the consequences of ultra-sonication duration in hexane medium on the boron precursor as well as the superconducting properties of MgB2 bulks. XRD revealed small peaks corresponding to unreacted Mg. First derivative of susceptibility was plotted as a function of temperature to explain the Tc,onset and ΔTc. J c was found to grow if the MgB2 bulk was prepared of boron ultra-sonicated for up to 30 minutes and then reduced with further boron ultra-sonication (60 minutes). SEM micrographs showed that boron powder subjected to longer ultra-sonication resulted in agglomeration of broken boron particles, forming large MgB2 grains. Based on the comparison of superconducting properties with previous results, we speculate that viscosity of the ultra-sonication medium might have a crucial role in the refinement of boron precursor powder. © Published under licence by IOP Publishing Ltd.

关键词： Grain boundaries

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Finite element simulation of reactor vibration and noise based on multi physical field coupling

Finite element simulation of reactor vibration and noise bas...

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2022 International Conference on Manufacturing, Industrial Automation and Electronics, ICMIAE 2022

作者： Wang, Yanzhao Guo, Zhaofeng Chen, Chuanmin Ni, Yuan China Electric Power Research Institute Co. Ltd. State Key Laboratory of Power Grid Environmental Protection Wuhan China Hebei Vocational University of Technology and Engineering Xingtai China North China Electric Power University Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control Department of Environmental Science and Engineering Baoding China

ISBN: (数字)9781665473965

ISBN: (纸本)9781665473965

Aiming at the noise radiation and propagation problem in the external sound field of power reactor, a simplified reactor model was established using ANSYS workbench, and the simulation model was imported into the acoustic software LMS ***, and the finite element mesh was divided by the direct boundary element method, the vibration of the reactor surface is simulated and calculated, finally, the characteristics of the noise radiation and the sound field are analyzed, and the noise value around the reactor is predicted to show that the sound diffraction phenomenon is very strong, the sound pressure value changes rapidly, and the relevant results can provide a corresponding theoretical basis for reactor noise reduction. © 2022 IEEE.

关键词： Acoustic fields

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Exposure risk assessment of representative phthalate acid esters and associated plastic debris under the agricultural land use in typical Chinese regions

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Chemosphere 2024年 350卷 141059页

作者： Feng, Yudong Li, Jing Ai, Yulu Cheng, Yikang Yang, Lei Han, Lu Chen, Mengfang State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing210008 China University of Chinese Academy of Science Beijing100049 China Jiangsu Engineering Laboratory for Soil and Groundwater Remediation of Contaminated Sites Institute of Soil Science Chinese Academy of Sciences Nanjing210008 China Nanjing Jinghongze Environmental Technology Co Ltd Nanjing210000 China

Phthalate acid esters (PAEs) are frequently detected in the global environment and can cause potential health hazards. In this study, quantitative exposure risk assessment was undertaken to derive soil generic assessment criteria (GAC) for six representative PAEs under the agricultural land use in the evaluated Chinese regions, which coupled multi-media transport and human exposure models based on multiple exposure pathways including vegetables consumption, dermal absorption, ingestion of soil and dust, and the exposure from non-soil sources. It is identified that the PAEs in agricultural soil are dominated by DEHP and DnBP representing 72–96% of the total PAEs. The GAC for BBP and DEHP, calculated on the basis of region-specific exposure parameters and soil properties in various locations, are stringent, signifying greater potential health risks from exposure to them, warranting more rigorous contamination management. The proposed soil GAC for plastic debris are 100, 107, 73 and 88 mg kg−1 for Heilongjiang Province, Beijing City, Jiangsu and Guangdong Provinces respectively. Additionally, the potential risks of 1.68 × 10−6 and 7 × 10−6 are identified for BBP and DEHP in Guangdong Province as indicated by the exceedance of target risk level of 1 × 10−6, with the consumption of vegetables being the dominant contributor to the total estimated PAEs exposure. Overall, this methodology based on the coupled contaminant transport and exposure models incorporating region-specific data provides a technical framework to derive science-based soil GAC for representative PAEs for maintaining and assessing soil quality and food safety under the agricultural land use. © 2023 Elsevier Ltd

关键词： Soils

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Metal decoration of Si particles via high-energy milling for lithium-ion battery anodes

RSC Applied Interfaces

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RSC Applied Interfaces 2025年第3期2卷 648-664页

作者： Araño, Khryslyn G. Armstrong, Beth L. Sacci, Robert L. Chambers, Matthew S. Jiang, Chun-Sheng Quinn, Joseph Meyer, Harry M. Tomich, Anton W. Musgrove, Amanda Lam, Steven Toups, Elena Wang, Chongmin Johnson, Christopher S. Veith, Gabriel M. Chemical Sciences Division Oak Ridge National Laboratory Oak Ridge 37831 TN United States Materials Science and Technology Division Oak Ridge National Laboratory Oak Ridge 37831 TN United States Materials Science Center National Renewable Energy Laboratory Golden 80401 CO United States Environmental Molecular Sciences Laboratory Pacific Northwest National Laboratory Richland WA 99354 United States Chemical Sciences and Engineering Division Argonne National Laboratory 9700 South Cass Avenue Argonne 60439-4837 IL United States

The solid electrolyte interphase (SEI) of silicon (Si) anodes for lithium-ion batteries has been a major focus of research for over a decade. One key factor influencing the formation and composition of the SEI is the desolvation of solvated Li ions, which involves an associated energy barrier. To address this, we aim to disrupt interfacial processes by decorating the Si surface with metals, which are conventionally used to improve the conductivity of Si. This study investigates the preparation and electrochemical performance of metal-decorated Si powders (Si^M, where M represents Ni, Fe, Ti, Ag, Al, or Y) as anode materials, using a simple high-energy ball milling process. STEM reveals that the resulting Si^M architectures either appear as islands on the Si surface or are integrated into the Si bulk, although X-ray diffraction (XRD) confirms that the Si lattice is essentially unchanged. The inherent high electronic conductivity of the metals contributed to lower electrode resistance revealed through scanning spreading resistance microscopy (SSRM), with Si^Ni achieving the overall lowest resistance at log(R) = 8.7 log(Ω), compared to log(R) = 10.8 log(Ω) for baseline Si, which is also consistent with reduced impedance during cycling. Among the materials studied, Si^Ni, Si^Fe, and Si^Ti demonstrated the most promising performance, reducing overpotential by up to 20 mV, delivering specific capacities above 1000 mAh g⁻¹ at a C/3 rate, and exhibiting improved rate capability. Zeta potential measurements suggest that particles with lower zeta potential correlate with better performance. Finally, SEI analysis of insoluble species using XPS revealed that metal decoration, particularly with Ni, results in a stable SEI characterized by lower inorganic LiF content and increased C-O products compared to the baseline Si at high states of charge, consistent with its enhanced performance. © 2025 RSC.

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