通讯机构：
[Wei, XL ; Cao, JX] X;Xiangtan Univ, Dept Phys, Xiangtan 411105, Peoples R China.;Xiangtan Univ, Hunan Prov Key Lab Smart Carbon Mat & Adv Sensing, Xiangtan 411105, Peoples R China.;Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.
摘要：
Two-dimensional black arsenic phosphorus has attracted significant interest due to its extraordinary electronic, optical, and transport properties. Therefore, in this work, we go through all the possibilities, including 3297 nonrepetitive configurations, and demonstrate the lowest energy structure of the As x P 1– x ( x = 0.4) monolayer by first-principles calculations. Our results indicate that both single-layer and bilayer As 4 P 6 host direct and indirect bandgap semiconductors with bandgaps of 1.94 and 1.26 eV, respectively, which exhibit good light adsorption within the visible light and infrared region. Moreover, both single-layer and bilayer As 4 P 6 possess high electron and hole mobilities (up to 2.6 × 10 4 cm 2 v –1 s –1 ), which also exhibit extreme carrier anisotropy originating from their high in-plane lattice anisotropy. Furthermore, bilayer As 4 P 6 exhibits exceptional device characteristics including a lower threshold voltage, higher on-state current, and higher conductance. In addition, the transmission coefficient spectrum of bilayer As 4 P 6 is three times greater than that of the monolayer owing to an increased number of electronic channels. Additionally, the extinction ratio of single-layer As 4 P 6 exhibits high anisotropy, indicating enhanced polarization sensitivity in the zigzag direction. Our findings provide two excellent candidate materials for the application of optoelectronic devices.
作者机构：
College of Computer Science and Technology, Hengyang Normal University, Hengyang, China;Hunan Provincial Key Laboratory of Intelligent Information Processing and Application, Hengyang Normal University, Hengyang, China;[Yezhou Zhang; Lang Li; Yu Ou] College of Computer Science and Technology, Hengyang Normal University, Hengyang, China<&wdkj&>Hunan Provincial Key Laboratory of Intelligent Information Processing and Application, Hengyang Normal University, Hengyang, China
通讯机构：
[Lang Li] C;College of Computer Science and Technology, Hengyang Normal University, Hengyang, China<&wdkj&>Hunan Provincial Key Laboratory of Intelligent Information Processing and Application, Hengyang Normal University, Hengyang, China
摘要：
Deep learning algorithms are increasingly employed to exploit side-channel information, such as power consumption and electromagnetic leakage from hardware devices, significantly enhancing attack capabilities. However, relying solely on power traces for side-channel information often requires adequate domain knowledge. To address this limitation, this work proposes a new attack scheme. Firstly, a Convolutional Neural Network (CNN)-based plaintext-extended bilinear feature fusion model is designed. Secondly, multi-model intermediate layers are fused and trained, yielding in the increase of the amount of effective information and generalization ability. Finally, the model is employed to predict the output probability of three public side-channel datasets (e.g. ASCAD, AES
$$\_$$
HD, and AES
$$\_$$
RD), and analyze the recovery key guessing entropy for each key to efficiently assess attack efficiency. Experimental results showcase that the plaintext-extended bilinear feature fusion model can effectively enhance the Side-Channel Attack (SCA) capabilities and prediction performance. Deploying the proposed method, the number of traces required for a successful attack on the ASCAD
$$\_$$
R dataset is significantly reduced to less than 914, representing an 70.5% reduction in traces compared to the network in Convolutional Neural Network-Visual Geometry Group (CNNVGG16) with plaintext, which incorporating plaintext features before the fully connected layer. Compared to existing solutions, the proposed scheme requires only 80% of the power traces for the attack mask design using only 75 epochs. As a result, the power of the proposed method is well proved through the different experiments and comparison processes.
摘要：
Unlike conventional single-atom catalysts (SACs), ferroelectric materials provide a novel approach to controlling catalytic activity through ferroelectric polarization switching. Herein, utilizing ab initio calculations, we investigated the effect of the polarization switching on the catalytic activities of oxygen reduction (ORR) and oxygen evolution reactions (OER) in ferroelectric SACs with transition-metal atoms anchored on the ferroelectric In 2 Se 3 monolayer. The polarization switching not only enables effective control of the reaction overpotentials but also the corresponding potential limiting steps, thereby activating and enhancing catalytic performance. Notably, reorienting the polarization direction at the specific reaction step can reactivate the stuck catalytic reduction and further improve the activity of specific TM-In 2 Se 3 with poor catalytic activity in both upward and downward polarization. Multilevel corrections involving overpotentials, orbital populations, and d-band centers demonstrate that the modulation of catalytic activity through polarization switching originates from the adjustable d-band centers of the supported metal atoms. These findings demonstrate that ferroelectricity switching is a highly promising avenue for improving OER and ORR activity.
Unlike conventional single-atom catalysts (SACs), ferroelectric materials provide a novel approach to controlling catalytic activity through ferroelectric polarization switching. Herein, utilizing ab initio calculations, we investigated the effect of the polarization switching on the catalytic activities of oxygen reduction (ORR) and oxygen evolution reactions (OER) in ferroelectric SACs with transition-metal atoms anchored on the ferroelectric In 2 Se 3 monolayer. The polarization switching not only enables effective control of the reaction overpotentials but also the corresponding potential limiting steps, thereby activating and enhancing catalytic performance. Notably, reorienting the polarization direction at the specific reaction step can reactivate the stuck catalytic reduction and further improve the activity of specific TM-In 2 Se 3 with poor catalytic activity in both upward and downward polarization. Multilevel corrections involving overpotentials, orbital populations, and d-band centers demonstrate that the modulation of catalytic activity through polarization switching originates from the adjustable d-band centers of the supported metal atoms. These findings demonstrate that ferroelectricity switching is a highly promising avenue for improving OER and ORR activity.
作者机构：
[Chen, Haiyang; Wang, Ziyue; Chen, Weijie; Kang, Shuaiqing; Yuan, Jixiang; Zhu, Juan; Chen, Xining; Li, Yaowen; Li, Yongfang; Zhang, Zhichao; Cao, Jianlei; Zheng, Jialei; Xu, Jiacheng] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou Key Lab Novel Semicond Optoelect Mat & Devi, Suzhou 215123, Peoples R China.;[Jiang, Xingxing] Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Hunan, Peoples R China.;[Li, Yaowen; Li, Yongfang] Soochow Univ, Jiangsu Key Lab Adv Negat Carbon Technol, Suzhou 215123, Peoples R China.;[Li, Yaowen] Soochow Univ, Coll Chem Chem Engn & Mat Sci, State & Local Joint Engn Lab Novel Funct Polymer M, Jiangsu Key Lab Adv Funct Polymer Design & Applica, Suzhou 215123, Peoples R China.;[Li, Yongfang] Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, CAS Key Lab Organ Solids, Beijing 100190, Peoples R China.
通讯机构：
[Li, YW ; Chen, WJ] S;Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou Key Lab Novel Semicond Optoelect Mat & Devi, Suzhou 215123, Peoples R China.;Soochow Univ, Jiangsu Key Lab Adv Negat Carbon Technol, Suzhou 215123, Peoples R China.;Soochow Univ, Coll Chem Chem Engn & Mat Sci, State & Local Joint Engn Lab Novel Funct Polymer M, Jiangsu Key Lab Adv Funct Polymer Design & Applica, Suzhou 215123, Peoples R China.
关键词：
Carrier transport;Defect states;Operational stability;Perovskite/organic tandem solar cells;quasi-2D/3D perovskite heterojunction
摘要：
Wide-bandgap (WBG) perovskites are continuously in the limelight owing to their applicability in tandem solar cells. The main bottlenecks of WBG perovskites are interfacial non-radiative recombination and carrier transport loss caused by interfacial defects and large energy-level offsets, which induce additional energy losses when WBG perovskites are stacked with organic solar cells in series because of unbalanced carrier recombination in interconnecting layer (ICL). To solve these issues, 1,3-propanediammonium iodide (PDADI) is incorporated to form Dion-Jacobson -phase quasi-2D perovskites with mixed high-n-values in WBG perovskites. PDADI simultaneously repairs the shallow/deep defects and establishes a Type-II energy-level alignment between quasi-2D/3D and 3D perovskites for rapid carrier extraction. More importantly, the short-chain diammonium cation in quasi-2D perovskite with high n-values results in a short Pb-I inorganic layer spacing, which enhances the interlayer electronic coupling and weakens the quantum-well confinement effect that restricts carrier transport. The suppressed transport loss increases the electron concentration in the ICL for balanced carrier recombination. The 0.0628 and 1.004 cm(2) perovskite/organic tandems achieve remarkable efficiencies of 25.92% and 24.63%, respectively. The quasi-2D capping layer can inhibit ion migration, allowing perovskite/organic tandems to show excellent operational stability (T(85) >1000h).
摘要：
The accurate and sensitive quantification of hydroxyl radical (·OH) and glucose is necessary for disease diagnosis and health guidance, but still challenging owing to the low concentration of ·OH and poor water solubility of fluorescent probes. In addition, fluorescent probes may cause secondary pollution to the environment. Here an organic cage was reported as a sensitive fluorescent probe for ·OH and glucose in aqueous solution without serious secondary pollution. The prepared organic cage with good water solubility showed specific redox affinity to ·OH in acidic condition, resulting in two oxidation stages of mild oxidation and subsequent oxidative degradation. Fluorescence around 485 nm enhanced remarkably in the first stage, and benzene ring in organic cage was degraded in the second stage. Based on the significant fluorescence enhancement, a sensitive fluorescence turn-on sensing method for ·OH was established within 90 s with the limit of detection (3 s/k , where s and k are the standard deviation for 10 replicate detections of blank and the slope of calibration function) of 5 nM. The recoveries of spiked ·OH in human serum and water samples ranged from 95.2 % to 102.7 %. After the glucose oxidase enzyme-Fenton reaction was involved, the ·OH detection was also applied to sensitive sensing of glucose with the limit of detection (3 s/k ) of 6 nM. The recoveries of spiked glucose in sugary drinks ranged from 96.2 % to 102.6 %. Furthermore, the proposed method would also be suitable for other hazardous substances and biomarkers which can produce hydrogen peroxide and further form ·OH via Fenton reaction.
The accurate and sensitive quantification of hydroxyl radical (·OH) and glucose is necessary for disease diagnosis and health guidance, but still challenging owing to the low concentration of ·OH and poor water solubility of fluorescent probes. In addition, fluorescent probes may cause secondary pollution to the environment. Here an organic cage was reported as a sensitive fluorescent probe for ·OH and glucose in aqueous solution without serious secondary pollution. The prepared organic cage with good water solubility showed specific redox affinity to ·OH in acidic condition, resulting in two oxidation stages of mild oxidation and subsequent oxidative degradation. Fluorescence around 485 nm enhanced remarkably in the first stage, and benzene ring in organic cage was degraded in the second stage. Based on the significant fluorescence enhancement, a sensitive fluorescence turn-on sensing method for ·OH was established within 90 s with the limit of detection (3 s/k , where s and k are the standard deviation for 10 replicate detections of blank and the slope of calibration function) of 5 nM. The recoveries of spiked ·OH in human serum and water samples ranged from 95.2 % to 102.7 %. After the glucose oxidase enzyme-Fenton reaction was involved, the ·OH detection was also applied to sensitive sensing of glucose with the limit of detection (3 s/k ) of 6 nM. The recoveries of spiked glucose in sugary drinks ranged from 96.2 % to 102.6 %. Furthermore, the proposed method would also be suitable for other hazardous substances and biomarkers which can produce hydrogen peroxide and further form ·OH via Fenton reaction.
摘要：
Rice is a staple food for nearly half the global population and, with rising living standards, the demand for high-quality grain is increasing. Chalkiness, a key determinant of appearance quality, requires accurate detection for effective quality evaluation. While traditional 2D imaging has been used for chalkiness detection, its inherent inability to capture complete 3D morphology limits its suitability for precision agriculture and breeding. Although micro-CT has shown promise in 3D chalk phenotype analysis, high-throughput automated 3D detection for multiple grains remains a challenge, hindering practical applications. To address this, we propose a high-throughput 3D chalkiness detection method using micro-CT and VSE-UNet. Our method begins with non-destructive 3D imaging of grains using micro-CT. For the accurate segmentation of kernels and chalky regions, we propose VSE-UNet, an improved VGG-UNet with an SE attention mechanism for enhanced feature learning. Through comprehensive training optimization strategies, including the Dice focal loss function and dropout technique, the model achieves robust and accurate segmentation of both kernels and chalky regions in continuous CT slices. To enable high-throughput 3D analysis, we developed a unified 3D detection framework integrating isosurface extraction, point cloud conversion, DBSCAN clustering, and Poisson reconstruction. This framework overcomes the limitations of single-grain analysis, enabling simultaneous multi-grain detection. Finally, 3D morphological indicators of chalkiness are calculated using triangular mesh techniques. Experimental results demonstrate significant improvements in both 2D segmentation (7.31% improvement in chalkiness IoU, 2.54% in mIoU, 2.80% in mPA) and 3D phenotypic measurements, with VSE-UNet achieving more accurate volume and dimensional measurements compared with the baseline. These improvements provide a reliable foundation for studying chalkiness formation and enable high-throughput phenotyping.
摘要：
Current camouflaged object detection (COD) methods rely heavily on large-scale datasets with pixel-level annotations. We propose a semi-supervised iterative learning network (SILNet) to address the reliance on large-scale pixel-level annotations in COD. SILNet employs a co-training strategy with convolutional networks and Transformers as encoders, followed by a binary gated decoder (BGD) for feature fusion. To optimize the use of labeled data, we introduce an optimal representative election mechanism (OREM) to identify key sequences of unlabeled images, guiding iterative learning and pseudo-label generation. To reduce noise in pseudo-labels, we incorporate a long-range representation module (LRM) leveraging Mamba’s background modeling. Experiments show that SILNet trained with only 10% of the labeled data outperforms state-of-theart unsupervised and weakly supervised methods, achieving performance competitive with fully supervised models.
期刊：
Expert Systems with Applications,2025年272:126693 ISSN：0957-4174
通讯作者：
Chen, WH
作者机构：
[Yan, Li; Chen, Wenhui; Zhao, Huihuang; Yang, Yanqing; Wang, Weijie] Hengyang Normal Univ, Coll Comp Sci & Technol, Hengyang 421002, Peoples R China.;[Chen, Wenhui; Yang, Yanqing] Hengyang Normal Univ, Hunan Prov Key Lab Intelligent Informat Proc & App, Hengyang 421002, Peoples R China.;[Zhao, Huihuang] Hunan Univ, Natl Engn Lab Robot Visual Percept & Control Techn, Hengyang, Peoples R China.
通讯机构：
[Chen, WH ] H;Hengyang Normal Univ, Coll Comp Sci & Technol, Hengyang 421002, Peoples R China.;Hengyang Normal Univ, Hunan Prov Key Lab Intelligent Informat Proc & App, Hengyang 421002, Peoples R China.
关键词：
Time series floating point data;Lossless compression;Internet of things;Compression algorithm;Heuristic genetic algorithm
摘要：
The processing of large volumes of time series data across various fields presents significant challenges, particularly when it comes to effectively managing floating-point numbers. Current dual precision floating-point lossless compression algorithms often struggle to deliver exceptional performance on diverse datasets, highlighting their inherent limitations. To address this issue, we propose a novel method called the Heuristic Genetic Algorithm Parameter Optimizer for Lossless Compression of Time Series Floating Point Data (HGA-ACTF). This method features a highly effective parameter optimizer designed specifically for compression algorithms that utilize leading zeros. The combination of our parameter optimizer and the HGA-ACTF algorithm strategy has been proven to outperform existing leading compression algorithms across multiple fields. This approach not only enhances the compression ratio but also significantly reduces both compression and decompression times. In our comparative study, we evaluated the HGA-ACTF algorithm against eleven well-performing algorithms and a variant of the algorithm, integrating our parameter optimizer and algorithmic strategy into other adaptable algorithms, and demonstrating notable improvements. Experimental results indicate that the HGA-ACTF algorithm achieves an average compression ratio improvement of 38.87%, with some datasets showing improvements of up to 54.36%. Our approach effectively addresses the transmission and storage of time series data, significantly reducing the overhead associated with data processing. The code can be found at https://github.com/wwj10/HGA-ACTF .
The processing of large volumes of time series data across various fields presents significant challenges, particularly when it comes to effectively managing floating-point numbers. Current dual precision floating-point lossless compression algorithms often struggle to deliver exceptional performance on diverse datasets, highlighting their inherent limitations. To address this issue, we propose a novel method called the Heuristic Genetic Algorithm Parameter Optimizer for Lossless Compression of Time Series Floating Point Data (HGA-ACTF). This method features a highly effective parameter optimizer designed specifically for compression algorithms that utilize leading zeros. The combination of our parameter optimizer and the HGA-ACTF algorithm strategy has been proven to outperform existing leading compression algorithms across multiple fields. This approach not only enhances the compression ratio but also significantly reduces both compression and decompression times. In our comparative study, we evaluated the HGA-ACTF algorithm against eleven well-performing algorithms and a variant of the algorithm, integrating our parameter optimizer and algorithmic strategy into other adaptable algorithms, and demonstrating notable improvements. Experimental results indicate that the HGA-ACTF algorithm achieves an average compression ratio improvement of 38.87%, with some datasets showing improvements of up to 54.36%. Our approach effectively addresses the transmission and storage of time series data, significantly reducing the overhead associated with data processing. The code can be found at https://github.com/wwj10/HGA-ACTF .
作者机构：
[Zhou, Wang; Han, Miaomiao; Liu, Jilei; Gao, Peng; Tang, Rui; Mo, Ying] Hunan Univ, Coll Mat Sci & Engn, Hunan Joint Int Lab Adv Mat & Technol Clean Energy, Hunan Prov Key Lab Adv Carbon Mat & Appl Technol, Changsha 410082, Hunan, Peoples R China.;[Wang, Dan] Hengyang Normal Univ, Univ Hunan Prov, Key Lab Micronano Energy Mat & Applicat Technol, Hengyang 421002, Hunan, Peoples R China.;[Wang, Dan] Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Hunan, Peoples R China.;[Chen, Shi] Univ Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Taipa 999078, Macao, Peoples R China.;[Yoshii, Takeharu; Wakabayashi, Keigo; Nishihara, Hirotomo] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, 2-1-1 Katahira,Aoba Ku, Sendai, Miyagi 9808577, Japan.
通讯机构：
[Liu, JL ] H;Hunan Univ, Coll Mat Sci & Engn, Hunan Joint Int Lab Adv Mat & Technol Clean Energy, Hunan Prov Key Lab Adv Carbon Mat & Appl Technol, Changsha 410082, Hunan, Peoples R China.
关键词：
Hard carbon;Surface chemistry;C-H bond;Initial coulombic efficiency;Adsorption capacity
摘要：
Controlling surface chemistry is critically important for improving the initial Coulombic efficiency (ICE) and adsorption capacity of hard carbon anode used in Li/Na/K-ion batteries. However, accurately identifying the types and concentrations of hydrogen/oxygen terminated functional groups (HTFG/OTFGs) and distinguishing their functionalities remain challenge. Herein, we quantitatively investigated the surface chemistry on hard carbon via ultra-high temperature programed desorption measurements, and uncovered the role of HTFG/OTFGs in influencing ICE and adsorption capacity in Li/Na/K-ions cells. The C–H group is found to be dominant species on the surface of hard carbon, and presents a positive correlation with ICE values and adsorption capacity. The low reactivity of C–H group with both electrolyte salt and solvent results in the formation of thinner and highly conducive solid electrolyte interphase (SEI) layer, which benefit for the enhanced ICE and improved Li/Na/K-ions diffusion across SEI layer. Additionally, the pimping trapping effect of C–H groups allows the adsorbed Li/Na/K-ions to migrate into graphitic interlayer quickly, enhancing the slope capacity. By fabricating a C–H group-rich surface chemistry on hard carbon, a high ICE value and satisfactory specific capacity have been realized. These findings enrich our understanding of the surface chemistry-induced interfacial reaction, which effectively guides the rational design of high-performance hard carbon.
Controlling surface chemistry is critically important for improving the initial Coulombic efficiency (ICE) and adsorption capacity of hard carbon anode used in Li/Na/K-ion batteries. However, accurately identifying the types and concentrations of hydrogen/oxygen terminated functional groups (HTFG/OTFGs) and distinguishing their functionalities remain challenge. Herein, we quantitatively investigated the surface chemistry on hard carbon via ultra-high temperature programed desorption measurements, and uncovered the role of HTFG/OTFGs in influencing ICE and adsorption capacity in Li/Na/K-ions cells. The C–H group is found to be dominant species on the surface of hard carbon, and presents a positive correlation with ICE values and adsorption capacity. The low reactivity of C–H group with both electrolyte salt and solvent results in the formation of thinner and highly conducive solid electrolyte interphase (SEI) layer, which benefit for the enhanced ICE and improved Li/Na/K-ions diffusion across SEI layer. Additionally, the pimping trapping effect of C–H groups allows the adsorbed Li/Na/K-ions to migrate into graphitic interlayer quickly, enhancing the slope capacity. By fabricating a C–H group-rich surface chemistry on hard carbon, a high ICE value and satisfactory specific capacity have been realized. These findings enrich our understanding of the surface chemistry-induced interfacial reaction, which effectively guides the rational design of high-performance hard carbon.
作者机构：
Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd, Xi’an, China;Shaanxi Agricultural Development Group Co., Ltd, Shaanxi Engineering Research Center of Land Consolidation, Xi’an, China;[Ling Han] College of Land Engineering, Chang’an University, Xi’an, China;[Juan Liao] College of Geography and Tourism, Hengyang Normal University, Hengyang, China;[Kun Wang] Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd, Xi’an, China<&wdkj&>Shaanxi Agricultural Development Group Co., Ltd, Shaanxi Engineering Research Center of Land Consolidation, Xi’an, China
通讯机构：
[Juan Liao] C;College of Geography and Tourism, Hengyang Normal University, Hengyang, China
摘要：
Karst is a unique landform that is widely distributed across the globe and holds significant importance for both the ecological environment and ecosystem. This paper focuses on a typical karst area in Guizhou Province, China, to investigate the threshold of key factors contributing to rocky desertification through quantitative analysis. Utilising the Logistic regression model, the thresholds of these key factors in the evolution of rocky desertification within the study area were successfully calculated and categorised. The findings indicate that vegetation cover thresholds are 35.6%, 52.5%, and 76.6%; slope thresholds are 35°, 25.7°, and 13.8°; land reclamation rates are 0.85, 0.65, and 0.45; and artificial disturbance indices are 0.95, 0.65, and 0.55. These results correspond to three categories: mild threshold, moderate threshold, and intense threshold, which quantify the degree of rocky desertification evolution in karst areas.
摘要：
Hyperspectral images (HSIs) contain rich spectral and spatial information, motivating the development of a novel circulant singular spectrum analysis (CiSSA) and multiscale local ternary pattern fusion method for joint spectral-spatial feature extraction and classification. Due to the high dimensionality and redundancy in HSIs, principal component analysis (PCA) is used during preprocessing to reduce dimensionality and enhance computational efficiency. CiSSA is then applied to the PCA-reduced images for robust spatial pattern extraction via circulant matrix decomposition. The spatial features are combined with the global spectral features from PCA to form a unified spectral-spatial feature set (SSFS). Local ternary pattern (LTP) is further applied to the principal components (PCs) to capture local grayscale and rotation-invariant texture features at multiple scales. Finally, the performance of the SSFS and multiscale LTP features is evaluated separately using a support vector machine (SVM), followed by decision-level fusion to combine results from each pipeline based on probability outputs. Experimental results on three popular HSIs show that, under 1% training samples, the proposed method achieves 95.98% accuracy on the Indian Pines dataset, 98.49% on the Pavia University dataset, and 92.28% on the Houston2013 dataset, outperforming several traditional classification methods and state-of-the-art deep learning approaches.
期刊：
Journal of Colloid and Interface Science,2025年679(Pt B):893-905 ISSN：0021-9797
通讯作者：
Wei, Tongye;Wei, Xiaolin
作者机构：
[Sun, Kailing; Wang, Chengxin; Ma, Linan; Xu, Wangping; Wei, Xiaolin; Li, Yingjie] Department of Physics & Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan 411105, China;[Wei, Tongye] Department of Physics & Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan 411105, China. Electronic address: Weity@xtu.edu.cn;[Wei, Xiaolin] College of Physics and Electronics Engineering, Hengyang Normal University, Hengyang 421002, China. Electronic address: xlw@xtu.edu.cn
通讯机构：
[Wei, Tongye] D;[Wei, Xiaolin] C;Department of Physics & Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan 411105, China. Electronic address:;College of Physics and Electronics Engineering, Hengyang Normal University, Hengyang 421002, China. Electronic address:
关键词：
Zinc ion battery;Zinc-I2 battery
摘要：
Aqueous zinc-iodine batteries have garnered increasing attention due to their low cost and high safety. However, their practical application is impeded by sluggish iodine redox reaction kinetics and the “shuttle effect” of polyiodides, which result in poor rate performance and limited cycled life. Here, we developed N -doped porous carbon fiber derived from Prussian blue and polyacrylonitrile (PAN) as a self-supporting cathode material for zinc-iodine batteries. The material demonstrates a high iodine adsorption capacity in the electrolyte solution. Density Function Theory (DFT) calculations indicate that the prepared materials demonstrate good catalytic activity. Furthermore, the interconnected carbon fiber network, characterized by high conductivity and a large specific surface area, facilitates rapid electron transport and ion diffusion. Consequently, the zinc-iodine battery demonstrates outstanding rate performance (148mAh g −1 at a high current density of 10 A g −1 ) and a long cycling life of 50,000 cycles, with a capacity retention rate of 72.1 %. Additionally, the battery achieves an impressive calendar life of 8 months and 23 days.
Aqueous zinc-iodine batteries have garnered increasing attention due to their low cost and high safety. However, their practical application is impeded by sluggish iodine redox reaction kinetics and the “shuttle effect” of polyiodides, which result in poor rate performance and limited cycled life. Here, we developed N -doped porous carbon fiber derived from Prussian blue and polyacrylonitrile (PAN) as a self-supporting cathode material for zinc-iodine batteries. The material demonstrates a high iodine adsorption capacity in the electrolyte solution. Density Function Theory (DFT) calculations indicate that the prepared materials demonstrate good catalytic activity. Furthermore, the interconnected carbon fiber network, characterized by high conductivity and a large specific surface area, facilitates rapid electron transport and ion diffusion. Consequently, the zinc-iodine battery demonstrates outstanding rate performance (148mAh g −1 at a high current density of 10 A g −1 ) and a long cycling life of 50,000 cycles, with a capacity retention rate of 72.1 %. Additionally, the battery achieves an impressive calendar life of 8 months and 23 days.
期刊：
Journal of Environmental Radioactivity,2025年285:107669 ISSN：0265-931X
通讯作者：
Yanliang Tan
作者机构：
[Xinyue Yang; Huiying Li; Ruomei Xie; Shuaibin Liu; Shuai Yuan; Haibo Yi; Jiale Sun; Zhipeng Liu; Jiulin Wu; Shicheng Luo; Xianfa Mao; Chenxi Zu; Feng Xiao; Hongbo Xu; Hongzhi Yuan; Yanliang Tan] College of Physics and Electronic Engineering, Hengyang Normal University, Hengyang, Hunan Province, 421008, China;[Zhongkai Fan] School of Nuclear Science and Technology, University of South China, Hengyang, Hunan Province, 421001, China
通讯机构：
[Yanliang Tan] C;College of Physics and Electronic Engineering, Hengyang Normal University, Hengyang, Hunan Province, 421008, China
摘要：
The CR-39 solid-state nuclear track detector is a commonly used instrument for passively measuring radon. When using CR-39 to measure the radon exhalation rate from the surface of a medium, the effects of leakage are often overlooked. However, to a certain extent, system leakage can affect the accuracy of the measurement results. Therefore, the effect of different effective decay constants (including leakage) on the radon exhalation rate is worth studying. In this study, both theoretical and experimental validation methods were used to verify the effect of the uncertainty of the effective decay constant on the results of CR-39 measurements of radon exhalation rate from the medium surface. In the theoretical validation, different values of radon exhalation rate can be obtained by substituting different effective decay constants into the CR-39 formula for measuring radon exhalation rate while keeping the other variables constant. In the experimental validation, the radon exhalation rate in the same medium was measured using both CR-39 and RAD7. Since the traditional passive method (CR-39 solid-state nuclear track detector) cannot directly obtain the effective decay constant, the effective decay constant in the CR-39 measurement experiment was replaced by the effective decay constant value fitted from the RAD7 experimental data. The results showed that the radon exhalation rate value measured by CR-39 was much larger than that measured by RAD7. From the theoretical and experimental validation, it is concluded that the uncertainty of the effective decay constant has a significant effect on the radon exhalation rate measured by CR-39.
The CR-39 solid-state nuclear track detector is a commonly used instrument for passively measuring radon. When using CR-39 to measure the radon exhalation rate from the surface of a medium, the effects of leakage are often overlooked. However, to a certain extent, system leakage can affect the accuracy of the measurement results. Therefore, the effect of different effective decay constants (including leakage) on the radon exhalation rate is worth studying. In this study, both theoretical and experimental validation methods were used to verify the effect of the uncertainty of the effective decay constant on the results of CR-39 measurements of radon exhalation rate from the medium surface. In the theoretical validation, different values of radon exhalation rate can be obtained by substituting different effective decay constants into the CR-39 formula for measuring radon exhalation rate while keeping the other variables constant. In the experimental validation, the radon exhalation rate in the same medium was measured using both CR-39 and RAD7. Since the traditional passive method (CR-39 solid-state nuclear track detector) cannot directly obtain the effective decay constant, the effective decay constant in the CR-39 measurement experiment was replaced by the effective decay constant value fitted from the RAD7 experimental data. The results showed that the radon exhalation rate value measured by CR-39 was much larger than that measured by RAD7. From the theoretical and experimental validation, it is concluded that the uncertainty of the effective decay constant has a significant effect on the radon exhalation rate measured by CR-39.
关键词：
out-of-time-ordered correlato;quantum chaos;quantum Rabi model
摘要：
Quantum chaos is an intriguing topic and has attracted a great deal of interests in quantum mechanics and black hole physics. Recently, the exponential growth of out-of-time-ordered correlator (OTOC) has been proposed to diagnose quantum chaos and verify the correspondence principle. Here, good correspondence is found between the linear entanglement entropy and the semiclassical phase space structures in the anisotropic quantum Rabi model. The Loschmidt echo in the chaotic sea decays more faster than that in the stable island. However, the OTOCs grow exponentially at early times for the initial states centered both in the chaotic and stable regions. The exponential growth of the OTOC is attributed to quantum collapse that provides a novel mechanism of yielding exponential growth of the OTOC in quantum systems. Moreover, the quantum collapse effect is more obvious for the initial states centered in the chaotic one. The results show that in the anisotropic quantum Rabi model, the linear entanglement entropy, and Loschmidt echo are more effective than OTOC for diagnosing quantum chaotic signals.
作者机构：
[Jiang, Yong; Wang, Chengying; Xiang, Lijun] Anqing Normal Univ, Anqing Forestry Technol Innovat Res Inst, Collaborat Innovat Ctr Targeted Dev Med Resources, Sch Life Sci,Key Lab Biodivers Conservat & Charact, Anqing 246011, Peoples R China.;[Hu, ZF; Hu, Zhifeng; Wang, Yong] Wannan Med Coll, Affliated Hosp 1, Yijishan Hosp, Dept Intervent Therapy, Wuhu, Peoples R China.;[Mao, Yifu; Mao, YF] Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.
通讯机构：
[Hu, ZF ] W;[Mao, YF ] H;[Xiang, LJ ] A;Anqing Normal Univ, Anqing Forestry Technol Innovat Res Inst, Collaborat Innovat Ctr Targeted Dev Med Resources, Sch Life Sci,Key Lab Biodivers Conservat & Charact, Anqing 246011, Peoples R China.;Wannan Med Coll, Affliated Hosp 1, Yijishan Hosp, Dept Intervent Therapy, Wuhu, Peoples R China.
关键词：
in vivo multimodal bioimaging;lanthanide fluorides;nanobio-probe
摘要：
Multimodal bioimaging is beneficial for clinical diagnosis and research due to the provision of comprehensive diagnostic information. However, the design of multifunctional bio-probes aggregating multiple bioimaging functions is greatly challenging. In this study, a multifunctional bio-probe based on lanthanide-based nanomaterials Sr(2)GdF(7): Yb(3+)/Er(3+)/Tm(3+)(abbreviated as SGF) was developed forin vivomultimodal imaging by co-adopting apropos lanthanides and tuning their molar ratio. The experimental results indicate that SGF incorporates multiple excellent properties, such as 10 nm small size, optimal red-NIR region emissions, strong paramagnetism, excellent x-ray absorption ability and high biological safety. More importantly, SGF successfully realizedin vivomultimodal imaging of upconversion luminescence, magnetic resonance and x-ray computed tomography at the animal level. Thus, SGF is expected to become a multifunctional bio-probe for clinical research/diagnosis. This research would promote the application and transformation of lanthanide fluorides nanomaterials in the field of clinical diagnosis to a certain extent.
摘要：
To find out whether dietary amylose/ amylopectin ratio (DAR) could attenuate injury in lipopolysaccharide (LPS)-challenged piglets, sixty male weaned piglets (Duroc × Landrace × Yorkshire, 21 days old, 6.51 ± 0.64 kg) were allotted to 5 dietary treatments with 12 cages per treatment, and fed ad libitum with diets different in DAR (0.00, 0.20, 0.40, 0.60 and 0.80). Feed transformation occurred from D15 to D21. On day 28, 12 h before slaughter, pigs were intraperitoneal injected with 100 μg/kg body weight LPS or sterile saline. Results showed that LPS stress caused an increase in serum urea nitrogen (UREA) and triglyceride (TG), but a decrease in alanine aminotransferase (ALT) activity and glucose (GLU) concentration (p < 0.05). Serum immunoglobulin G (IgG) concentration increased in DAR 0.80 but decreased in other groups after LPS stress (p < 0.05). Compared with the control group, concentrations of Ile, Leu, Phe, Val, Thr, Arg decreased in serum but increased in liver after LPS stress (p < 0.05). Serum Arg, Tyr, Sar, Ans, Orn increased linearly with increasing DAR (p < 0.05). Piglets in diet DAR 0.00 had highest superoxide dismutase (SOD1) and glutathione peroxidase 1 (GPX1) mRNA expression in liver than those in other groups (p < 0.05). There was significant effect of LPS stress * dietary DAR on total SOD activity and SOD1 mRNA gene expression (p < 0.05), LPS stress caused an increase in those two indices for pigs in groups 0.00 and 0.80. Piglets in diet 0.80 had the highest hepatic Cu, Fe, Mn, Zn concentrations than those in other groups (p < 0.05). Cecal indol(e) concentration was higher in diet 0.00 than that in diet 0.80 (p < 0.05). After LPS stress, colonic skatole concentration increased in DAR 0.40, 0.80 but decreased in other groups (p < 0.05). In conclusion, adverse effects of the LPS challenge could be reversed by feeding weaned piglets with low or high DAR diet through regulating amino metabolism and antioxidant function.
作者：
Haoyu Zhang*;Jean-Christophe Domec;Christopher A. Maier;Chainey A. Boroski;Na Wang;...
期刊：
Agricultural and Forest Meteorology,2025年366:110479 ISSN：0168-1923
通讯作者：
Haoyu Zhang
作者机构：
[Chainey A. Boroski] Nicholas School of the Environment, Duke University, Durham, NC 27708, USA;College of Urban and Environmental Sciences, Peking University, Beijing 100871, China;Bordeaux Sciences Agro, INRAE UMR 1391 ISPA, F-33170 Gradignan, France;[Christopher A. Maier] Southern Research Station, USDA Forest Service, Durham, NC 27713, USA;Department of Forest Sciences, University of Helsinki, FI-00014 Finland
通讯机构：
[Haoyu Zhang] N;Nicholas School of the Environment, Duke University, Durham, NC 27708, USA<&wdkj&>College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
摘要：
Knowledge of plant hydraulics facilitates our understanding of the capabilities of forests to withstand droughts. This common-garden study quantified the hydraulic response to variation in sandy soil conductivity and atmospheric vapor pressure deficit (VPD) of five morphologically contrasting, wide-ranging pine species ( Pinus virginiana, P. echinata, P. taeda, P. elliottii, P. palustris ) of the Southeastern US, a region experiencing relatively high occurrence of hydrological droughts, which are projected to increase in frequency and severity. We employed a Bayesian hierarchical model to estimate xylem hydraulic parameters associated with drought vulnerability curves (VC) for terminal branches and shallow roots. We found that branches in all of the pine species were more resistant to cavitation-induced embolism and had greater hydraulic safety margin than roots. Among all species, P 50 (i.e., water potential at which 50 % conductivity is lost) and S 50 (i.e., the slope of VC centered on P 50 ) of roots showed an increasing trend from shorter- to longer-needle species. By contrast, hydraulic conductivity at saturation ( k sat ) of either branches or roots did not exhibit any trend with needle length. We devised a simplified index for daily average canopy conductance ( G c I ), computed from high-frequency sap flux measurement. Regression of G c I showed that mean daytime VPD accounted for most of the variation in G c I (> 60 %), followed by unsaturated soil hydraulic conductivity ( k soil ; 24 %), whereas in situ root conductivity accounted for the least (< 5 %). All species exhibited a linear-log relationship between the variation in G c I unexplained by VPD and k soil , a pattern consistent with preventing soil water conditions from dropping to low levels where k soil declines dramatically. We concluded that the shorter-needle species ( P. virginiana and P. echinata ) are likely to tolerate drought better than the other species, due to more resistant roots and a moderate-to-high sensitivity of G c I to VPD and k soil .
Knowledge of plant hydraulics facilitates our understanding of the capabilities of forests to withstand droughts. This common-garden study quantified the hydraulic response to variation in sandy soil conductivity and atmospheric vapor pressure deficit (VPD) of five morphologically contrasting, wide-ranging pine species ( Pinus virginiana, P. echinata, P. taeda, P. elliottii, P. palustris ) of the Southeastern US, a region experiencing relatively high occurrence of hydrological droughts, which are projected to increase in frequency and severity. We employed a Bayesian hierarchical model to estimate xylem hydraulic parameters associated with drought vulnerability curves (VC) for terminal branches and shallow roots. We found that branches in all of the pine species were more resistant to cavitation-induced embolism and had greater hydraulic safety margin than roots. Among all species, P 50 (i.e., water potential at which 50 % conductivity is lost) and S 50 (i.e., the slope of VC centered on P 50 ) of roots showed an increasing trend from shorter- to longer-needle species. By contrast, hydraulic conductivity at saturation ( k sat ) of either branches or roots did not exhibit any trend with needle length. We devised a simplified index for daily average canopy conductance ( G c I ), computed from high-frequency sap flux measurement. Regression of G c I showed that mean daytime VPD accounted for most of the variation in G c I (> 60 %), followed by unsaturated soil hydraulic conductivity ( k soil ; 24 %), whereas in situ root conductivity accounted for the least (< 5 %). All species exhibited a linear-log relationship between the variation in G c I unexplained by VPD and k soil , a pattern consistent with preventing soil water conditions from dropping to low levels where k soil declines dramatically. We concluded that the shorter-needle species ( P. virginiana and P. echinata ) are likely to tolerate drought better than the other species, due to more resistant roots and a moderate-to-high sensitivity of G c I to VPD and k soil .
摘要：
Electrochemical conversion of nitrate offers an efficient approach to mitigate nitrate pollution and ammonia synthesis but is still challenged by the slow kinetics and selectivity issues of active sites. Herein, by performing density functional theory (DFT) calculations, we report a double-atom catalyst of PdCu–C 7 N 6 by incorporating Pd and Cu together embedded in C 7 N 6 frameworks, which not only shows outstanding catalytic performance with a low limiting potential of 0.36 V, but also can effectively inhibit the competing hydrogen evolution reactions. The high NO 3 RR activity on PdCu–C 7 N 6 is well explained by the polarizable bond length as well as the asymmetric charge distribution of Pd–Cu dual active sites. This DFT work opens an avenue for developing highly efficient multicomponent NO 3 RR electrocatalysts.
作者机构：
[Weifeng Sun] Hunan Key Laboratory for Conservation and Utilization of Biological Resources in the Nanyue Mountainous Region, College of Life Science, Hengyang Normal University, Hengyang 421008, China;[Jing Ding; Xiaoqing Ye; Xiaoqing Mei; Yu Chen; Yuhui Zheng; Changbo Peng; Zhenming Che; Yi Liu; Wenwu Ding] College of Food and Bioengineering, Xihua University, Chengdu 610039, China;[Yuan Liu] Experiment Teaching Center of Basic Chemistry, Sichuan University, Chengdu 610207, China
通讯机构：
[Wenwu Ding] C;College of Food and Bioengineering, Xihua University, Chengdu 610039, China
关键词：
Doubanjiang-meju;Rotary-drum Fermenter;Unsteady Temperature Field;Flavor quality;Aflatoxin B 1
摘要：
In this study, the flavor of the doubanjiang-meju product in the rotary-drum fermenter (PRF) was evaluated by comparing that of the product under the constant temperature (PCT) and the product in the traditional fermentation (PTF). The physicochemical indexes of PRF were optimal, with organic acid content 1.1 and 1.76 times that of PCT and PTF, respectively. A total of 201 flavors were detected in the three products. The flavor content in PRF were 27.24% and 130.72% higher than in PCT and PTF while its aflatoxin B 1 (AFB 1 ) content was the lowest. The colors of PRF were closer to the reddish-brown, and the PRF possessed higher sauce flavor, enduring fragrance, alcohol smell as quantitative descriptive analysis (QDA) shows. A total of four aroma compounds with OAV>1 were identified in the three products. Correlation analysis indicated that the correlations between aromas and other indicators in PRF were the most obvious. These results indicated that the PRF quality was superior to that of PCT and PTF because of the improved mass and heat transfer. The large-scale industrial production might be limited due to the equipment rotation. This study could provide valuable reference to improve the flavor and quality of doubanjiang-meju.
In this study, the flavor of the doubanjiang-meju product in the rotary-drum fermenter (PRF) was evaluated by comparing that of the product under the constant temperature (PCT) and the product in the traditional fermentation (PTF). The physicochemical indexes of PRF were optimal, with organic acid content 1.1 and 1.76 times that of PCT and PTF, respectively. A total of 201 flavors were detected in the three products. The flavor content in PRF were 27.24% and 130.72% higher than in PCT and PTF while its aflatoxin B 1 (AFB 1 ) content was the lowest. The colors of PRF were closer to the reddish-brown, and the PRF possessed higher sauce flavor, enduring fragrance, alcohol smell as quantitative descriptive analysis (QDA) shows. A total of four aroma compounds with OAV>1 were identified in the three products. Correlation analysis indicated that the correlations between aromas and other indicators in PRF were the most obvious. These results indicated that the PRF quality was superior to that of PCT and PTF because of the improved mass and heat transfer. The large-scale industrial production might be limited due to the equipment rotation. This study could provide valuable reference to improve the flavor and quality of doubanjiang-meju.
