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A New Active Sonar Detector Based on Beamformed Deep Neural Network

IEEE Journal of Oceanic engineering 2025年第2期50卷 1370-1386页

作者： Peng, Cong Wang, Lei Gao, Juncheng Zhang, Shuhao Ji, Haoran National Electric Energy Transformation and Control Engineering Technology Research Center College of Electrical Engineering Hunan University Changsha410082 China School of Physics and Electronics Hunan Normal University Changsha410081 China

This article proposes a new active sonar detector based on a beamformed deep neural network (BDNN) in three steps. The process involves a preprocessing step, a deep neural network (DNN) application step, and a subsequent postprocessing step. In the preprocessing step, partial spectra are extracted from multiple directions through frequency-domain beamforming. These partial spectra from different directions serve as DNN input, yielding estimated target probabilities as output in the DNN application step. In the postprocessing step, a multiframe probability multiplication technique is proposed, and the number of frames is determined adaptively. The proposed BDNN generates a gridded azimuth-distance graph, where each grid cell represents the probability of a target's presence at a specific azimuth and distance. To guarantee real-time application, we also propose a graphics processing unit based parallel acceleration method, which increases the computation speed of the beamforming process by nearly two orders of magnitude compared to the CPU. The proposed BDNN is verified through sea and lake trials. The results demonstrate that the proposed BDNN achieves better detection performance compared to the conventional matched filter method and exhibits remarkable generalization capabilities. © 1976-2012 IEEE.

关键词： Frequency domain analysis

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Investigation into enhanced performance of toluene and Hg^(0) stimulative abatement over Cr-Mn oxides co-modified columnar activated coke

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Journal of Environmental Sciences 2025年第2期148卷 88-106页

作者： Jiajie Wang Jie Liu Lei Gao Dong Xie Caiting Li Liping Xiang Huiyu Xiong Jiaqi Xie Tianren Zhang Yueguo Pan School of Resources Environment and Safety Engineering University of South ChinaHengyang 421001China National&Local Joint Engineering Research Center for Airborne Pollutants Control and Radioactivity Protection in Buildings Hengyang 421001China Key Laboratory of Prefabricated Building Energy Saving Technology of Hunan Province Hengyang 421001China College of Environmental Science and Engineering Hunan UniversityChangsha 410082China

In this study,a string of Cr-Mnco-modified activated coke catalysts(XCryMn1-y/AC)were prepared to investigate toluene and Hg^(0) removal *** characterizations including XRD,TEM,SEM,in situ DRIFTS,BET,XPS and H_(2)-TPR showed that 4%Cr0.5Mn0.5/AC had excellent physicochemical properties and exhibited the best toluene and Hg^(0) removal efficiency at 200℃.By varying the experimental gas components and conditions,it was found that too large weight hourly space velocity would reduce the removal efficiency of toluene and Hg^(0).Although O_(2) promoted the abatement of toluene and Hg^(0),the inhibitory role of H_(2)O and SO_(2) offset the promoting effect of O_(2) to some *** significantly inhibited Hg^(0) removal,resulting from that toluene was present at concentrations orders of magnitude greater than mercury’s or the catalyst was more prone to adsorb toluene,while Hg^(0) almost exerted non-existent influence on toluene *** mechanistic analysis showed that the forms of toluene and Hg^(0) removal included both adsorption and oxidation,where the high-valent metal cations and oxygen vacancy clusters promoted the redox cycle of Cr^(3+)+Mn^(3+)/Mn^(4+)+Cr^(6+)+Mn^(2+),which facilitated the conversion and replenishment of reactive oxygen species in the oxidation process,and even the CrMn_(1.5)O_(4) spinel structure could provide a larger catalytic interface,thus enhancing the adsorption/oxidation of toluene and Hg^(0).Therefore,its excellent physicochemical properties make it a costeffective potential industrial catalyst with outstanding synergistic toluene and Hg^(0) removal performance and preeminent resistance to H_(2)O and SO_(2).

关键词： Toluene Element mercury Cr-Mn oxides Activated coke

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Sulfhydryl-modified zeolite A with exceptional strontium adsorption selectivity

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Science China Chemistry 2025年第5期68卷 1847-1858页

作者： Lingyi Li Lanxing Ren Dong Wang Junchang Chen Qi Guo Yuting Zhao Fuqiang Zhao Linwei He Jie Li Wenqi Zhang Lijuan Song Long Chen Lixi Chen Bin Wang Lin Zhu Tao Duan Zhifang Chai Shuao Wang State Key Laboratory of Radiation Medicine and Protection School for Radiological and Interdisciplinary Sciences (RAD-X)and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow University School of Science Harbin Institute of Technology (Shenzhen) School of Chemistry and Chemical Engineering Hunan Province Key Laboratory for the Design and Application of Actinide ComplexesUniversity of South China Radioactive Waste Technology and Radiochemistry Research Department China Nuclear Power Technology Research Institute Co.Ltd. State Key Laboratory of Environment-Friendly Energy Materials School of National Defence Science & TechnologySouthwest University of Science and Technology

Efficient removal of trace radiostrontium from contaminated highly saline wastewater,such as seawater,remains a critical but challenging task due to the coexistence of large excess of hard cations like Na+,K+,Mg2+and particularly Ca2+,which shares similar physicochemical properties with Sr2+.Herein,we successfully boosted the selectivity by a sulfhydryl-functionalized NaA zeolite（SH-NaA） via ion exchange coupled with reinforced soft-soft interactions between sulfhydryl groups and Sr2+.Remarkably,SH-NaA achieved a 99.8%removal efficiency of Sr2+in the presence of a tenfold excess of Ca2+,with a distribution coefficient（Kd） of 4.98×10～5mL/*** effectiveness of SH-NaA in accurately capturing Sr2+was further validated by its superior dynamic adsorption performance in natural seawater compared to pristine NaA *** experiments highlighted SH-NaA’s exceptional Sr2+removal efficiency（qm=233.36 mg/g）,rapid adsorption kinetics（1 min）,superior decontamination depth（Kd=6.71×10～5mL/g）,and robust irradiation stability（400 kGy γ-ray）.X-ray photoelectron spectroscopy（XPS） and in situ Fouriertransform infrared（FTIR） analyses underscored the pivotal role of sulfhydryl groups in Sr2+*** functional theory（DFT） calculations revealed that the sulfhydryl-functionalized NaA zeolite exhibits the best selectivity toward Sr2+,with an interaction energy of-2.55 *** findings demonstrate that organic group functionalized zeolites hold significant promise for environmental remediation applications.

关键词： strontium selectivity adsorption seawater sulfhydryl NaA zeolite

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Customized energy Retail Package Based on User energy Usage Behavior 8th

Customized Energy Retail Package Based on User Energy Usage ...

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8th International Conference on Life System Modeling and Simulation, LSMS 2024 and 8th International Conference on Intelligent Computing for Sustainable energy and Environment, ICSEE 2024

作者： Tan, Xinquan Tan, Mao Li, Zibin Ren, Yuling School of Automation and Electronic Information Xiangtan University Hunan Xiangtan411105 China Hunan Engineering Research Center of Multi-Energy Cooperative Control Technology Xiangtan University Xiangtan411105 China Hunan National Center for Applied Mathematics Hunan Xiangtan411105 China

ISBN: (纸本)9789819602247

Community integrated energy systems (CIES) play a crucial role in promoting energy sustainability and community economic development. However, the current community demand response (DR) management measures have not fully stimulated the enthusiasm of various users to participate. Therefore, this study proposes a two-stage energy retail package design scheme for DR management in CIES. In the first stage, consumers are segmented through a classification method based on the degree of DR in their energy usage behavior. In the second stage, a multi-objective optimization strategy is employed to design energy retail packages that meet consumer needs while ensuring the interests of the community operators (CO). The simulation results verify that this approach not only enhances the stability of the system but also maximizes the benefits for both CO and consumers. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： Demand response

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Transition metal-based cathode catalysts for Li-CO_(2)batteries

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Journal of energy Chemistry 2025年第5期104卷 225-253页

作者： Wenqing Ma Mingjuan Gao Jianping Ma Siyu Liu Lishan Yang Yahui Yang Xiangping Chen Tianzhen Jian Institute for Advanced Interdisciplinary Research(iAIR) Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of ShandongSchool of Chemistry and Chemical EngineeringUniversity of JinanJinan 250022ShandongChina Key Laboratory of Chemical Biology&Traditional Chinese Medicine Research(Ministry of Education of China) National and Local Joint Engineering Laboratory for New Petrochemical Materials and Fine Utilization of ResourcesKey Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan ProvinceKey Laboratory of Light Energy Conversion Materials of Hunan Province CollegeHunan Normal UniversityChangsha 410081HunanChina Nano-Science Center&Department of Chemistry University of CopenhagenCopenhagen 2100Denmark Jinan Preschool Education College Jinan 250307ShandongChina State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100ShandongChina Shandong Sacred Sun Power Sources Co.Ltd. Qufu 273100ShandongChina

The Li-CO_(2)battery has been highly rated as an intriguing technique for balancing the carbon cycle for years,but it is still significantly challenged by the obstacles such as limited reversibility,sluggish kinetics,and poor energy ***,the design and development of advance catalysts that can enhance the kinetics and reversibility of the CO_(2)electrochemical cycling reactions are considered the imperative *** metal-based catalysts are widely considered appealing owing to their unfilled dorbitals,rich and adjustable valences,as well as *** this review,the working mechanism and the key issues of the CO_(2)electrochemical cycling reaction are discussed *** the strategies for composition and structure design of different type of transition metal-based catalysts are highlighted,including their benefits,limitations,and the ways to implement these ***,based on the pioneering research,the perspectives on the challenges and key points for the future development of cathode catalyst are proposed.

关键词： Li-CO_(2)battery Transition metal Cathode catalyst Catalytic mechanism

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The synergistic enhancement of bending and compression properties of phosphate-activated metakaolin geopolymer by glass fiber and borax

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Structures 2025年 76卷

作者： Yang, Xingyuan He, Min Peng, Xinyu Ou, Zhihua School of Civil Engineering Hunan University of Technology Zhuzhou412007 China Intelligent Control of Safety and Risk for Existing Engineering Structures Key Laboratory of Hunan Province Zhuzhou412007 China Hunan Province Engineering Technology Research Center for New Materials of Building Wall Energy Conservation Hunan Zhuzhou412007 China

Phosphate-based geopolymer (PAG) is a new type of green and sustainable gel material. I has a simple preparation process, excellent and stable performance, and broad application prospects. However, adding excessive fibers to improve bending performance can introduce air, leading to a decrease in compressive strength. Therefore, the effects of glass fiber (GF) dosage (FD: 0.5–2 %) and borax dosage (BD: 0.5–4 %) on the flowability, compressive/flexural performance, and microstructure of glass fiber-borax synergistically reinforced geopolymer composites (BF/PAMG) were systematically investigated, alongside their enhancement and toughening mechanisms. The results indicated that when BD was 1 %, with the increase of FD, the flowability of BF/PAMG showed a decreasing trend, the compressive strength first increases and then decreases, and the bending strength, toughening, and fracture work all show a gradually increasing trend. When FD was 1 %, the compressive strength reached a maximum of 39 MPa, an increase of 31.36 %. When FD was 2 %, the bending strength and fracture work reached a maximum of 7.86 MPa and 608.13 J/m², respectively, an increase of 67.9 % and 226.51 %. When FD was 2 %, as BD increased, the toughening of BF/PAMG showed an increasing trend, while the compressive strength, bending strength, and fracture work first increased and then decreased, and the toughening showed a gradually decreasing trend. When BD was 2 %, the compressive strength reached a maximum of 40.02 MPa, an increase of 45.90 %;when BD was 1 %, the bending strength and fracture toughness reached a maximum of 7.86 MPa and 608.13 J/m², respectively, an increase of 33.67 % and 103.55 %. Microscopic analysis revealed that borax facilitated the geopolymerization reaction while simultaneously substituting partial Al-O bonds in both Berlinite (AlPO₄) crystals and gel phases with B-O bonds, leading to the formation of a novel three-dimensional gel network structure. This structural modification was

关键词： Glass fibers

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Amplified treatment of mariculture effluent and pathogen with synchronously electricity generation in a self-biased photocatalytic fuel cell based on dual photoelectrode

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International Journal of Hydrogen energy 2025年 137卷 622-635页

作者： Zeng, Honghu Lam, Sze-Mun Low, Kuan-Chee Sin, Jin-Chung Li, Haixiang Lin, Hua Huang, Liangliang Huang, Haitao Xu, Liwei Lim, Jun-Wei Jaffari, Zeeshan Haider Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control Guilin University of Technology Guilin541004 China Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area Guilin University of Technology Guilin541004 China Faculty of Engineering and Green Technology Universiti Tunku Abdul Rahman Jalan Universiti Bandar Barat Kampar Perak 31900 Malaysia College of Environmental Science and Engineering Guilin University of Technology Guilin541004 China HICoE-Centre for Biofuel and Biochemical Research Institute of Sustainable Energy and Resources Department of Fundamental and Applied Sciences Universiti Teknologi PETRONAS Seri Iskandar Perak Darul Ridzuan 32610 Malaysia Department of Civil Environmental and Ocean Engineering Stevens Institute of Technology 1 Castle Point Terrace HobokenNJ07030 United States

A device capable of producing electricity from wastewater treatment process is highly desirable as it addresses critical challenges in sustainable energy generation and environmental conservation. In this work, a highly efficient three-dimensional (3D) porous network structured In2O3/ZnO/FTO photoanode and a flower-like Cu2O/CuO/Cu cathode were successfully fabricated and integrated into a visible light-driven photocatalytic fuel cell (PFC) system. Material characterization revealed that In2O3 was well-dispersed on the 3D porous ZnO network, proving ample active sites for photoelectrocatalysis. The PFC utilizing mariculture effluent containing chlortetracycline hydrochloride (CTCH) as a fuel source, achieved an open-circuit voltage of 559 mV and a maximum power density of 0.3084 μW cm−2 under visible light irradiation. Furthermore, the system demonstrated a CTCH removal efficiency of 91.5 %, outperforming ZnO/FTO and In2O3/FTO electrodes in terms of degradation efficacy and energy conversion. Additionally, the cell demonstrated outstanding recyclability and remarkable antimicrobial efficacy against Escherichia coli and Bacillus cereus, underscoring its superior functionality. The boosted photoelectrocatalytic activity was credited to the formation of the In2O3/ZnO/FTO heterojunction within the porous network-structure, which provided a high specific surface area and favorable optical and electronic traits and thereby, improving the overall efficiency of the dual photoelectrode system. This PFC device facilitates simultaneous electricity generation, pollutant degradation and bacterial sterilization, offering promising multifunction applications. © 2025 Hydrogen energy Publications LLC

关键词： Escherichia coli

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Ammonium Sensing Patch with Ultrawide Linear Range and Eliminated Interference for Universal Body Fluids Analysis

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Nano-Micro Letters 2025年第4期17卷 332-346页

作者： Mingli Huang Xiaohao Ma Zongze Wu Jirong Li Yuqing Shi Teng Yang Jiarun Xu Shuhan Wang Kongpeng Lv Yuanjing Lin School of Microelectronics Southern University of Science and TechnologyShenzhen 518055People’s Republic of China Department of Interventional Radiology Shenzhen People’s HospitalShenzhen 518020People’s Republic of China College of Mechanical and Energy Engineering Shaoyang UniversityShaoyang 422000HunanPeople’s Republic of China Shenzhen Hainwise Medical Technology Co. LTDShenzhen 518118People’s Republic of China Shenzhen Institute for Drug Control(Shenzhen Testing Center of Medical Devices) Shenzhen 518000People’s Republic of China Institute of Innovative Materials Guangming Advanced Research InstituteSouthern University of Science and TechnologyShenzhen 518055People’s Republic of China

Ammonium level in body fluids serves as one of the critical biomarkers for healthcare,especially those relative to liver *** continuous and real-time monitoring in both invasive and noninvasive manners is highly desired,while the ammonium concentrations vary largely in different body ***,the sensing reliability based on ion-selective biosensors can be significantly interfered by potassium *** tackle these challenges,a flexible and biocompatible sensing patch for wireless ammonium level sensing was reported with an ultrawide linear range for universal body fluids including blood,tears,saliva,sweat and *** as-prepared biocompatible sensors deliver a reliable sensitivity of 58.7 mV decade-1 in the range of 1-100 mM and a desirable selectivity coefficient of 0.11 in the interference of potassium ions,attributed to the cross-calibration within the sensors *** sensor’s biocompatibility was validated by the cell growth on the sensor surface(>80%),hemolysis rates(<5%),negligible cellular inflammatory responses and weight changes of the mice with implanted *** biocompatible sensors with ultrawide linear range and desirable selectivity open up new possibility of highly compatible biomarker analysis via different body fluids in versatile approaches.

关键词： Biocompatible sensors Implantable bioelectronics Ammonium sensing Cross-calibration Ultrawide linear range

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Cysteine and dialysis mediated inhibition of dynamic changes in glycosylated egg white protein during storage

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Food Chemistry 2025年 480卷 143819页

作者： Guo, Lulu Zhang, Wanqiu Zhang, Fan Hu, Shende Zhao, Qianwen Chang, Cuihua Li, Junhua Huang, Zijian Gu, Luping Yang, Yanjun Su, Yujie State Key Laboratory of Food Science and Resources School of Food Science and Technology Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province Jiangnan University Jiangsu Wuxi214122 China College of Bioscience and Biotechnology Hunan Agricultural University Hunan Changsha410128 China Hunan Jiapin Jiawei Technology Development Group Co. LTD Hunan Engineering & Technology Research Center for Food Flavors and Flavorings Hunan Jinshi415400 China

Glycosylation is commonly used to improve the solubility and functionality of egg white protein (EWP), but glycosylated EWP is prone to quality deterioration during storage. To enhance its storage stability, cysteine (Cys) addition and dialysis-based desugar treatment were applied to xylo-oligosaccharide (XOS) glycosylated EWP (GEW) in accelerated storage examinations. Both Cys addition and dialysis minimized changes in soluble protein content, color difference, and particle size during storage. Further, they inhibited the Maillard reaction and the accumulation of its intermediate products. Cys addition effectively maintained protein structures and prevented protein crosslinking. However, dialysis lost the filling and protective effect of free sugars, lowering the denaturation temperature of ovalbumin. Cys and dialysis effectively maintained the stability of emulsifying properties, while Cys better preserved gelation. Overall, both Cys addition and dialysis markedly enhanced the storage stability of GEW, with Cys proving to be more effective. © 2025 Elsevier Ltd

关键词： Cysteine Dialysis Egg white protein Glycosylation Maillard reaction Storage stability

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A physics-informed temporal convolutional network-temporal fusion transformer hybrid model for probabilistic wind speed predictions with quantile regression

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energy 2025年 326卷

作者： Mi, Lihua Han, Yan Long, Lizhi Chen, Hui Cai, C.S. College of Architecture and Energy Engineering Wenzhou University of Technology Wenzhou325035 China Hunan Province Research Center for Safety Control Technology and Equipment of Bridge Engineering Changsha University of Science & Technology Changsha410076 China School of Civil Engineering Hunan University Changsha410076 China Department of Bridge Engineering School of Transportation Southeast University Nanjing211189 China

Accurate wind speed prediction is crucial for mitigating the adverse effects of wind variability on power systems and facilitating the integration of wind energy into the grid. However, existing interval prediction studies often overlook the guidance from physics information and have not yet revealed the influence of physical constraints on interval prediction accuracy. This study presents two significant advances in probabilistic wind forecasting: First, we develop a novel physics-informed TCN-TFT hybrid model that uniquely integrates dilated causal convolutions (for multi-scale temporal feature extraction) with transformer-based attention mechanisms (for variable importance weighting), while enforcing physical consistency through Bernoulli's principle and the ideal gas law. Second, we introduce a joint optimization framework that minimizes quantile loss for uncertainty estimation and physics-based loss for meteorological consistency. Experimental results indicate that the proposed model outperforms comparative methods among four datasets, achieving lower PINAW and coverage width-based criterion (CWC) values while maintaining similar PICP values. For instance, in the two-step wind speed interval forecasting of dataset1, the PICP values achieve 0.986, 0.953, and 0.898, with corresponding PINAW values of 0.329, 0.247, and 0.214 for confidence levels of 0.95, 0.9, and 0.85, respectively. Furthermore, physical constraints enhance prediction interval reliability by boosting coverage (5.0 % PICP) with a modest width increase (27.1 % PINAW), outperforming unconstrained models that exhibit 320 % higher CWC due to coverage deficits. Overall, this novel approach effectively quantifies uncertainty in wind speed forecasts, demonstrating its potential for improved reliability in wind energy applications. © 2025 Elsevier Ltd

关键词： Fusion reactions

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