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Rare-earth element doped NiFe-MOFs as efficient and robust bifunctional electrocatalysts for both alkaline freshwater and seawater splitting

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CHEMICAL SCIENCE 2025年第2期16卷 685-692页

作者： yang, Jun Shen, yong xian, Jiahui xiang, Runan Li, Guangqin Sun Yat Sen Univ Lehn Inst Funct Mat MOE Lab Bioinorgan & Synthet Chem GBRCE Funct Mol EngnSch Chem Guangzhou 510006 Peoples R China Guangdong Univ Petrochem Technol Sch Chem Engn Maoming 525000 Peoples R China

Based on the target of carbon neutrality, it is very important to explore highly active and durable electrocatalysts for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Herein, a series of NiFe-based metal-organic frameworks (MOFs) with the doping of various rare-earth elements (Ce, Y, and La) were in situ grown on nickel foam by a facile solvothermal process. The representative CeNiFe-MOF showed amazing OER performance with ultralow overpotentials of 224 and 277 mV at 500 mA cm-2 in 1.0 M KOH and 1.0 M KOH + seawater, respectively. Moreover, it also exhibited favorable activity and durability for both alkaline freshwater and seawater splitting. Theoretical calculations unveiled that Ce doping effectively optimized the adsorption energy of H* and reduced the energy barrier from *OH to *O, thus leading to significant promotion of HER and OER performance. This work provided new inspiration for the electron modulation and activity optimization of MOF-based electrocatalysts.

关键词： Potassium hydroxide

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Design Guidelines of Stacked Dual-Band SIW Slot Array With Optimal Aperture Reuse Ratio and High Aperture Efficiency

IEEE OPEN JOURNAL OF ANTENNAS AND PROPAGATION

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IEEE OPEN JOURNAL OF ANTENNAS AND PROPAGATION 2025年第3期6卷 797-809页

作者： Su, Yihong yang, Yulei Lin, xian Qi Fan, yong Univ Elect Sci & Technol China Sch Elect Engn Chengdu 611731 Peoples R China Univ Elect Sci & Technol China Yangtze Delta Reg Inst Huzhou Huzhou 313001 Peoples R China

With the advent of Internet of Things (IoT) technology, intelligent devices have greatly enhanced people's daily lives by providing greater convenience, efficiency, and connectivity. In this context, communication between vehicles, as well as between vehicles and satellite navigation systems, base stations, and other infrastructures, is crucial. These communications utilize millimeter wave frequency bands to achieve faster response times and more accurate target tracking and identification. In this paper, the design guidelines of a stacked dual-band (28/35 GHz) substrate integrated waveguide (SIW) slot antenna array are proposed to achieve the optimal aperture reuse ratio and high aperture efficiency. The dual-band array consists of two-layer substrates, and each layer acts as an independent SIW slot antenna array. The upper substrate is composed of nonadjacent SIW slot sub-arrays for the high band operation, while the low band array is located in the lower substrate radiating through the gap between the high band sub-arrays. A dual-band antenna array with an 8 x 8 array in each band is designed and demonstrated as an example, where the center frequencies of the two bands are chosen to be 28 GHz and 35 GHz. The maximum aperture reuse ratio is achieved by the rational array arrangement, and the improvement in aperture efficiency is accomplished by a periodic grid structure. The measured maximum aperture efficiency reaches 55% and 58% in the desired lower and higher bands, respectively. The measured results of the antenna show superior performance, validating the design guidelines of the antenna topology.

关键词： Antenna arrays Substrates Dual band Aperture antennas Radar antennas Design methodology Slot antennas Microstrip antenna arrays Antenna measurements Spaceborne radar Stacked SIW shared-aperture high aperture efficiency dual-band antenna array periodic grid structure

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Polyprenylated Xanthones Isolated from Garcinia Resins and Their Beneficial Effects on Rice Blast Disease

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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2025年第5期73卷 2920-2934页

作者： Li, Ke-Ming Zheng, Shu-Min Dong, xian Zeng, Zi-Ying yang, Guangyi Yan, yong-Ming Cheng, yong-xian Shenzhen Univ Med Sch Inst Inheritance Based Innovat Chinese Med Sch PharmGuangdong Prov Key Lab Chinese Med Ingre Shenzhen 518060 Peoples R China Shenzhen Hosp Integrated Tradit Chinese & Western Dept Pharm Shenzhen 518104 Peoples R China Yunnan Univ Chinese Med Coll Tradit Chinese Pharm Kunming 650500 Peoples R China

Five undescribed polyprenylated xanthones (1, 3, 4, 22, and 23) and 27 known compounds were isolated from Garcinia resins, and the antifungal activities of 15 of them were investigated. Compound 7 exhibited notable in vitro antifungal effects against Magnaporthe grisea with an IC50 value of 3.54 mu g/mL, superior to isoprothiolane (10.30 mu g/mL), and showed an excellent protective efficiency of 78.4% at 200 mu g/mL against RB (rice blast), equivalent to isoprothiolane (87.2%). Its antifungal activity may be related to the destruction of the cell membrane and the effect of absorption and utilization of sugar by the mycelium, which was proven by the transcriptome sequencing and preliminary mechanism, showing a good application prospect for replacing agrochemical fungicides in the control of RB disease.

关键词： Garcinia resin xanthones antifungal activity Magnaporthe grisea action mechanism transcriptome sequencing

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A decentralized feedback-based consensus model considering the consistency maintenance and readability of probabilistic linguistic preference relations for large-scale group decision-making

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COMPLEX & INTELLIGENT SYSTEMS 2025年第1期11卷 1-29页

作者： Zhang, xian-yong Zhou, Yi-yang Zhou, Jian-Lan Huazhong Univ Sci & Technol Sch Civil & Hydraul Engn Wuhan 430074 Hubei Peoples R China Huazhong Univ Sci & Technol Sch Artificial Intelligence & Automat Wuhan 430074 Hubei Peoples R China Shenzhen Huazhong Univ Sci & Technol Res Inst Shenzhen 518057 Peoples R China

With the enrichment of large-scale group decision-making (LSGDM) methods, the decentralized consensus reaching process (CRP) has demonstrated many advantages. However, when the probabilistic linguistic preference relation (PLPR) is utilized in the decentralized CRP, its consistency and readability are hardly to maintain. Besides, the low-cost consensus adjustment and non-cooperative behaviors of subgroups are still not considered simultaneously in the decentralized CRP. In order to solve these problems, this article proposes a decentralized feedback-based consensus model to support CRP in LSGDM based on PLPR with complete readability. First, to maintain the consistency of PLPR throughout the LSGDM process, an additive expected consistency for PLPR is specifically defined. This definition enables the automatic consistency maintenance of PLPR during linear-weight-based clustering, opinion adjustment, and opinion aggregation. Given that the existing consistency adjustment method always destroys the readability of the original PLPR, a definition of complete readability for PLPR, reflected by a reasonable probability distribution of its elements, is proposed. This is followed by a consistency-improving optimization model that considers both the adjustment cost and complete readability. Subsequently, in order to support a more realistic CRP, a decentralized feedback-based minimum cost consensus model is established to improve the group consensus level while addressing the non-cooperative behaviors of subgroups. Furthermore, an illustrative example of the selection of expressway repair plans is presented to testify the practicality of the proposed methods and demonstrate the distinctive characteristics in comparison with the existing approaches.

关键词： Feedback-based consensus model Additive expected consistency Complete readability Probabilistic linguistic preference relations Large-scale group decision-making

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EV-Perturb: event-stream perturbation for privacy-preserving classification with dynamic vision sensors

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MULTIMEDIA TOOLS AND APPLICATIONS 2024年第6期83卷 16823-16847页

作者： Zhang, xian Wang, yong yang, Qing Shen, Yiran Wen, Hongkai Harbin Engn Univ Coll Comp Sci & Technol 145 Nantong St Harbin 150001 Heilongjiang Peoples R China Capital Univ Econ & Business Sch Management & Engn 121 Shoujingmao S Rd Beijing 100070 Peoples R China Shandong Univ Sch Software 27 Shanda S Rd Jinan 250100 Shandong Peoples R China Univ Warwick Dept Comp Sci Coventry CV4 7AL England

The dynamic vision sensors or event-cameras are bio-inspired vision platforms with independent and asynchronous pixels. Their unique design enables a number of advantages over traditional RGB cameras, including high temporal resolution for capturing high speed motion without blur and high dynamic range for sensing under challenging lighting conditions. As the outputs of the event-cameras are discrete and asynchronous events, termed as event-streams, rather than traditional high-quality video frames, they are regarded as low privacy-intrusive. However, research on reconstruction from events has revealed that event-streams can be converted to high quality video frames by sophisticated reconstruction algorithms, so that the claim on privacy-preserving does not hold anymore. In this paper, we focus on the privacy issue of event-streams used in EV-based classification tasks and propose, EV-Perturb, an event-stream perturbation mechanism to protect event-streams from reconstruction attacks. EV-Perturb flips polarities of events in a random manner and the theoretical proof shows that it provides differential-private guarantee on the perturbed event-streams. We also evaluate the utility (classification accuracy) and privacy (video reconstruction error) of EV-Perturb on EV-based classification tasks with multiple publicly available datasets using deep learning models. In summary, this work has several technical contributions. First, by proposing EV-Perturb, we consider the privacy issue of event-streams under reconstruction attack, which is the first piece of work focusing on solving this specific privacy issue. The approach is based on randomized response, which is both efficient and effective, shown as our evaluation. We also provide a theoretical proof that EV-Perturb is differential-private and derive the strict privacy guarantee with respect to the probability of change. Lastly, the results of the extensive evaluations show that EV-Perturb is can effectively protect eve

关键词： Event camera Differential privacy Video reconstruction

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Effects of Burning Severity and Root System on Herb Land Surface Evapotranspiration: A Study Based on Prescribed Fire in Southwest China

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ECOHYDROLOGY 2025年第2期18卷

作者： Liu, Kemin Wang, Lunjiang An, Lingqiu yang, Jing Miao, Chuandai xian, yong Guizhou Univ Coll Forestry Guiyang Peoples R China Qianxi Monitoring Ctr Soil & Water Conservat Qianxi Peoples R China

Post-fire evapotranspiration (ET) exerts a significant influence on soil moisture dynamics and thus vegetation recovery in, particularly, karst ecosystems in southwest China. Despite the widespread use of remote sensing and mathematical modelling to estimate large-scale land surface post-fire ET, few studies directly examine how burn severity and vegetation species affect small-scale ET. This study bridges the gap by conducting two experiments. In the first experiment, lysimeters containing Artemisia Iavandulifolia and Miscanthus sinensis (with tap and fibrous root systems, respectively) were grown for 2.5 years, followed by prescribed burning with varying severities (low, moderate and high). Post-fire ET was monitored over 1-year period, with unburned control for comparison. In the second experiment, the soil surface burns were carried out to assess ET under three surface conditions: burned surface with ash cover (BSA), burned surface without ash cover (BO) and unburned surface with ash cover (UA). The ET was measured using the mass change method, and atmospheric and soil moisture were also collected. Results indicated that prescribed fire reduced post-fire post-fire ET by up to 46%-62%, depending on both fire severity and herb species. On low and moderate burning severities surfaces, ET from Miscanthus sinensis was greater than that with Artemisia Iavandulifolia. But, in high-burning severity conditions, the opposite was true. This shift was due to varying heating depth of burn and root distribution of the two herbs. ET varied depending on atmosphere conditions. The dependence declined with the fire severity. The biomass and ash coverage were not significantly related to ET. However, decreasing evaporation was detected as the burning severity increased for the BSA and BO. These results suggested that the post-fire changes in soil properties were a key driver of ET dynamics.

关键词： evapotranspiration karst prescribed fire restoration vegetation

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The free fatty acid receptor 2 (FFA2): Mechanisms of action, biased signaling, and clinical prospects*

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PHARMACOLOGY & THERAPEUTICS 2025年 272卷 108878页

作者： Li, yang Liu, Qiao Pan, Chuan-Ying Lan, xian-yong Northwest A&F Univ Coll Anim Sci & Technol 22 Xinong St Yangling 712100 Shaanxi Peoples R China Air Force Med Univ Tangdu Hosp Dept Pathol Xian 710038 Peoples R China

Free Fatty Acid Receptor 2 (FFA2), also known as GPR43, is a receptor activated by short-chain fatty acids (SCFAs) with fewer than six carbons in their aliphatic chains. This receptor is expressed in immune cells, adipose tissue, the gastrointestinal tract, and pancreatic islet cells, where it plays a crucial role in the modulation of inflammation, lipid metabolism, insulin secretion, and appetite regulation. Extensive research has been conducted to elucidate the structural attributes and physiological functions of FFA2. Furthermore, several synthetic agonists have been developed for FFA2 that can preferentially activate certain G-proteins, demonstrating potential pharmacological advantages in both in vivo and in vitro studies. Herein, we review the structure and physiological functions of FFA2 and its synthetic ligands, discussing the structural basis of FFA2's biased signaling and the potential role of biased ligands targeting this receptor in the treatment of metabolic and neurodegenerative diseases. (c) 2025 Elsevier Inc. All rights are reserved, including those for text and data mining, AI training, and similar technologies.

关键词： FFA2/GPR43 Biased signaling G -protein coupled receptors (GPCRs) Short-chain fatty acids (SCFAs) Synthetic ligands

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Deciphering Eutrophication-Limiting Nutrients in Lakes: A Multiscale Analysis of Chinese Waters

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ACS ES&T WATER 2024年第7期4卷 2995-3006页

作者： Fang, yong Huang, Ruting Shi, xian-yang Anhui Univ Sch Resources & Environm Engn Anhui Prov Key Lab Wetland Ecosyst Protect & Resto Hefei 230601 Peoples R China

The total nitrogen/total phosphorus (TN/TP) ratio is considered a valuable indicator for evaluating the abundance of phytoplankton and the eutrophic condition of a water body, but its effectiveness as an indicator of eutrophication at different watershed scales has not been fully explored. In this study, we collected data from 103 lakes within four major watersheds in China and utilized the machine learning models eXtreme Gradient Boosting (XGBoost) and k-nearest neighbors (KNN) to predict the TN/TP ratio at three different scales. We identified notable disparities in the TN/TP ratio, chlorophyll a concentration, and algal cell density across the three scales. By incorporating time as an input variable, we were able to capture temporal trends in TN/TP ratio, which enhanced the predictive accuracy and fit of the machine learning models. The optimization ratios of the model indicators' coefficient of determination, root-mean-square error, and mean absolute percentage error at three scales are 35.71 +/- 25.26%, 0.43 +/- 0.17%, and 1.47 +/- 1.19%, respectively. XGBoost demonstrated a higher accuracy and better fit than KNN. Our results reveal the substantial impact of the watershed scale on predicting eutrophication-limiting nutrients of water bodies.

关键词： prediction TN/TP machine learning scales watersheds

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Behavior of SSC-filled plastic-lined steel tube (SSC-PLST) slender columns under eccentric compression

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STRUCTURES 2025年 76卷

作者： Ye, yong Jin, Qian-Song Jiang, De-xian Jiang, Hang Liu, yang Huaqiao Univ Coll Civil Engn Xiamen 361021 Peoples R China Key Lab Struct Engn & Disaster Prevent Fujian Prov Xiamen 361021 Peoples R China

This paper presents a comprehensive study on the mechanical behavior and design methodology of seawater sea sand concrete-filled plastic-lined steel tubular (SSC-PLST) slender columns under eccentric compression. A series of experiments were conducted on eighteen specimens, including twelve SSC-PLST slender columns and six hollow steel tubes, and parameters such as slenderness ratio, load eccentricity, and concrete strength were varied to observe their influence on the failure modes and load-carrying capacities of the specimens. Finite element analysis (FEA) was conducted to develop a numerical model of the SSC-PLST slender columns. Furthermore, parametric studies were conducted to evaluate the impact of concrete strength, steel strength, slenderness ratio, and load eccentricity on the ultimate load-carrying capacity of the SSC-PLST columns. The applicability of existing design method for concrete-filled steel tubular structures in calculating the ultimate load-carrying capacity of SSC-PLST slender columns was also assessed.

关键词： Concrete-filled steel tube Plastic-lined steel tube Eccentric compression Composite action Calculation method

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Seven New Guanidine Derivatives and One New Hypoxanthine Derivative Isolated from the Scorpion Buthus martensii and Potential Anti-Neuroinflammatory Activity

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JOURNAL OF NATURAL PRODUCTS 2025年第3期88卷 821-829页

作者： Li, Ke-Ming Li, Wei-Fen Yan, yong-Ming yang, Guangyi Cheng, yong-xian Shenzhen Univ Shenzhen Univ Med Sch Sch Pharm Marshall Lab Biomed EngnInst Inheritance Based In Shenzhen 518055 Peoples R China Shenzhen Hosp Integrated Tradit Chinese & Western Dept Pharm Shenzhen 518104 Peoples R China

Twelve guanidine derivatives (1-12), including seven new compounds (martensiiagms A-G, 1-7), one new hypoxanthine derivative (martensiiagm H, 13), and 15 known compounds (14-28) were isolated from the whole body of Buthus martensii Karsch and identified by analysis of data. Subsequent biological evaluations revealed the anti-inflammatory activity of compound 1. It attenuates the neuroinflammation and oxidative stress levels prompted by lipopolysaccharide. This attenuation is accomplished by a specific action on mitochondria, which, in turn, caused a significant decrease in reactive oxygen species and pro-inflammatory cytokines.

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