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现代电子技术 2025年第1期48卷 151-156页

作者：严飞郑绪文孟川李楚刘银萍南京信息工程大学自动化学院江苏南京210044 江苏省大气环境与装备技术协同创新中心江苏南京210044 南京信息工程大学应急管理学院江苏南京210044

卷积神经网络是目标检测中的常用算法,但由于卷积神经网络参数量和计算量巨大导致检测速度慢、功耗高,且难以部署到硬件平台,故文中提出一种采用CPU与FPGA融合结构实现MobileNetV1目标检测加速的应用方法。首先,通过设置宽度超参数和分... 详细信息

卷积神经网络是目标检测中的常用算法,但由于卷积神经网络参数量和计算量巨大导致检测速度慢、功耗高,且难以部署到硬件平台,故文中提出一种采用CPU与FPGA融合结构实现MobileNetV1目标检测加速的应用方法。首先,通过设置宽度超参数和分辨率超参数以及网络参数定点化来减少网络模型的参数量和计算量;其次,对卷积层和批量归一化层进行融合,减少网络复杂性,提升网络计算速度;然后,设计一种八通道核间并行卷积计算引擎,每个通道利用行缓存乘法和加法树结构实现卷积运算;最后,利用FPGA并行计算和流水线结构,通过对此八通道卷积计算引擎合理的复用完成三种不同类型的卷积计算,减少硬件资源使用量、降低功耗。实验结果表明,该设计可以对MobileNetV1目标检测进行硬件加速,帧率可达56.7 f/s,功耗仅为0.603 W。

关键词：卷积神经网络目标检测 FPGA MobileNetV1 并行计算硬件加速

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Evaluation of Efficiency Enhancement for a Solar Panel Using Water, Ice and Dry Ice Backside Cooling Systems

Evaluation of Efficiency Enhancement for a Solar Panel Using...

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International Electrical Engineering Congress (iEECON)

作者： Tawinwika Chaisuwan Shuguang Wei Banri Khemkladmuk Supasin Srisombat Raohuai Liang xuwen zheng Aisawan Chanwiset Krit Lertlam Chonlatee Photong Faculty of Engineering Mahasarakham University Maha Sarakham Thailand School of Physics and Electronics Nanning Normal University Guangxi China

ISBN: (数字)9798350383591

ISBN: (纸本)9798350383607

The purpose of this research is to study and conduct an experimental test for investigating the increase of efficiency of a solar panel when cooling it with a backside cooling system. There were 3 experiment test-rigs by using 3 different refrigerants: water, ice, and dry ice. By containing a type of refrigerant into its identical box that was designed by wrapping insulation around the box while drilling the holes for the box that did not contain any refrigerant. Then covered the box with a solar panel. To determine which refrigerant could be the best helped increase the efficiency of a solar panel. The research team conducted the tests with 2 time periods: a short time for 1 hour operation when collecting experimental results for every 2 minutes and a long time for 6 hours when collecting experimental results every 10 minutes. It is found from the experimental tests that significantly different capacity in power generated for different types of refrigerants could be obviously noticed even for the short time. For the long-time test, ice was the best refrigerant that continuously enhanced the efficiency for the solar panel with 25.2 watts compared with 24.0 watts for no refrigerant cooling, which was 6.25% increase.

关键词： Electrical engineering Drilling Insulation Cooling Ice Solar panels Wrapping

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Effect of hydraulic retention time on effluent pH in anammox bioreactors: Characteristics of effluent pH and pH as an indicator of reactor performance

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JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021年 280卷 111716-111716页

作者： Karasuta, Chayangkun Wang, Xiaojun zheng, xuwen Chen, Yongxing Chen, zhenguo South China Univ Technol Sch Environm & Energy Guangzhou 510006 Peoples R China Minist Educ Key Lab Pollut Control & Ecosyst Restorat Ind Clu Beijing Peoples R China Hua An Biotech Co Ltd Foshan 528300 Peoples R China

In order to assess the performance of anaerobic ammonium oxidation (anammox) bioreactors, it is necessary to study the stoichiometry of the anammox reaction and pH. This study focused on the effect of the hydraulic retention time (HRT) on the effluent pH in anammox-upflow anaerobic sludge blanket (UASB) bioreactors. Anammox-UASB bioreactors with and without a recirculation system were used to investigate the effluent pH and bioreactor performance. It was concluded that under varying HRT conditions, the decrease in effluent pH did not indicate the deterioration of nitrogen removal, but did indicate that the nitrogen removal efficiency was reduced owing to a sudden increase in the nitrogen loading rate resulting from the decrease in HRT. Moreover, the results showed that the HRT directly affected the concentration of OH-, which affected the increase/decrease in effluent pH. This study demonstrated that effluent pH is a more powerful tool than previous techniques used to assess bioreactor performance. We suggest that the effluent pH could be used for preliminary assessment.

关键词： Anammox Hydraulic retention time Nitrogen removal efficiency pH Preliminary assessment Reactor performance

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Advanced treatment of phosphorus-containing tail water by Fe-Mg-Zr layered double hydroxide beads: Performance and mechanism

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JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021年 296卷 113203-113203页

作者： Zhang, Yangzhong Qin, Jiafu Wang, Xiaojun Chen, zhenguo zheng, xuwen Chen, Yongxing South China Univ Technol Sch Environm & Energy Guangzhou 510006 Peoples R China South China Univ Technol Sch Chem & Chem Engn Guangzhou 510006 Peoples R China

The adsorption process for low concentration phosphorus wastewater treatment has advantages of simple convenience, stable performance and less sludge, while most of current adsorbents fail to be separated for reuse. Meanwhile, few people pay attention to the removal of low concentration phosphorus from tail water by adsorbents. In this study, a newly efficient Fe-Mg-Zr layered double hydroxide beads were prepared by simple insitu crosslinking method and applied for low concentration phosphorus adsorption from real tail water. The maximum adsorption capacity of Fe-Mg-Zr beads was 21.61 mg/g, showing more practical application value for phosphorus removal. Fixed bed experiments showed that 5.0 g adsorbent could removed 2.12 mg phosphorus from tail wastewater containing 1.03 mg/L phosphorus. The beads adsorbent can be reused with excellent adsorption performance even after five cycles of adsorption-desorption operation. After detailed analyses, it was found that ligand exchange and ion exchange were the dominant mechanisms for phosphorus adsorption by this beads. Overall, the material has the advantages of simple preparation, good adsorption performance, easy separation and recycle, indicating a great potential for low concentration phosphorus wastewater treatment.

关键词： Fe-Mg-Zr beads Adsorption Phosphorus-containing tail water Recycling

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Comparison of complete nitritation-denitrification and partial nitritation-anammox for iron oxide wastewater treatment

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JOURNAL OF CLEANER PRODUCTION 2021年 294卷 126281-126281页

作者： Chen, zhenguo Chen, Yongxing zheng, xuwen Wang, Xiaojun Wang, Yongqing Chen, Jing South China Univ Technol Sch Environm & Energy Guangzhou 510006 Peoples R China South China Univ Technol Sch Chem & Chem Engn Guangzhou 510641 Peoples R China Minist Educ Key Lab Pollut Control & Ecosyst Restorat Ind Clu Guangzhou Peoples R China Changsha Univ Sci & Technol Sch Hydraul Engn Changsha 410114 Peoples R China

Cost-effective nitrogen removal from iron oxide wastewater is a limitation in the sustainable development of the iron oxide manufacturing industry. Two processes, namely, complete nitritation (in a sequencing batch reactor with zeolite powder, ZSBR) combined with traditional denitrification and partial nitritation (in the same ZSBR) combined with anaerobic ammonium oxidation (anammox), were successfully developed and then compared for long-term nitrogen removal from iron oxide wastewater. Stable and complete nitritation with nitrite accumulation ratio (NAR) > 95.1% was achieved in the ZSBR. Nitrogen removal rates (NRRs) of up to 4.083 +/- 0.727 kg N/m(3)/d were obtained subsequently in a denitrifying upflow sludge blanket reactor at an influent chemical oxygen demand/total nitrogen ratio of 2.5. Efficient partial nitritation was also achieved with effluent NO2--N/NH4+-N ratios of 1.1-1.5 and NAR > 92.0% in the ZSBR, with a final NRR of 1.175 kg N/m(3)/d in the subsequent anammox reactor. The addition of zeolite achieved persistent free ammonia inhibition on nitrite oxidizing bacteria in the ZSBR and resulted in efficient and controllable nitrite accumulation. The total chemical cost in the complete nitritation-denitrification process was 3.32 USD/kg NH4+-N, which was 1.14 times higher than that in the partial nitritation-anammox process. Both processes were effective and reliable in achieving nitrogen removal from iron oxide wastewater for the sustainable development of the iron oxide manufacturing industry. (C) 2021 Elsevier Ltd. All rights reserved.

关键词： Nitrogen removal Iron oxide Nitritation Zeolite Free ammonia

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Efficient Removal and Recovery of Phosphorus from Industrial Wastewater in the Form of Vivianite

SSRN

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SSRN 2022年

作者： Zhang, Yangzhong Qin, Jiafu Chen, zhenguo Chen, Yongxing zheng, xuwen Guo, Lu Wang, Xiaojun School of Environment and Energy South China University of Technology Guangzhou510006 China School of Environment South China Normal University Guangzhou510006 China

With the shortage of phosphorus resources, the concept of phosphorus recovery from wastewater is generally proposed. Recently, phosphorus recovery from wastewater in the form of vivianite has been widely reported, which could be used as a slow-release fertilizer as well as the production of lithium iron phosphate for Li-ion batteries. In this study, chemical precipitation thermodynamic modeling was applied to evaluate the effect of solution factors on vivianite crystallization with actual phosphorus containing industrial wastewater. The modeling results showed that the solution pH influences the concentration of diverse ions, and the initial Fe2+ concentration affects the formation area of vivianite. The saturation index (SI) of vivianite increased with the initial Fe2+ concentration and Fe:P molar ratio. pH 7.0, initial Fe2+ concentration 500 mg/L and Fe:P molar ratio 1.50 were the optimal conditions for phosphorus recovery. Mineral Liberation Analyzer (MLA) accurately determined the purity of vivianite was 24.13%, indicating the feasibility of recovering vivianite from industrial wastewater. In addition, the cost analysis showed that the cost of recovering phosphorus by the vivianite process was 0.925 USD/kg P, which can produce high-value vivianite products and realize "turn waste into treasure". © 2022, The Authors. All rights reserved.

关键词： Phosphorus

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社会主义核心价值观在司法裁判中的适用

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福州大学学报（哲学社会科学版） 2022年第4期36卷 82-93页

作者：郑旭文徐振东福州大学法学院福建福州350108 厦门大学法学院福建厦门361005

社会主义核心价值观不仅承载着推进中国特色社会主义建设事业的政治功能,同时具有为司法裁判提供价值标准、克服法律规则的教条僵化和拓展社会主义实在法法源的法律功能。由于社会主义核心价值观具有高度的凝练性和抽象性,各级法院在适... 详细信息

社会主义核心价值观不仅承载着推进中国特色社会主义建设事业的政治功能,同时具有为司法裁判提供价值标准、克服法律规则的教条僵化和拓展社会主义实在法法源的法律功能。由于社会主义核心价值观具有高度的凝练性和抽象性,各级法院在适用社会主义核心价值观进行司法裁判时存在随意性强、裁判说理差异化较大以及与法律原则混同并用等问题,影响了司法裁判的客观性和法秩序的安定性。要解决社会主义核心价值观融入司法裁判的问题,需要注意协调社会主义核心价值观体系内部诸价值之间的关系,建构社会主义核心价值观作为裁判规范的一般规则,只有穷尽所有法律规则和法律原则仍然不能获得正当判决结论时才能诉诸社会主义核心价值观作为裁判规范的可能性。绝大多数情形下,社会主义核心价值观只能作为裁判论证说理的依据予以援引。同时,还应建立较为系统、成熟的社会主义核心价值观案例类型系谱,作为各级法院司法裁判的规范指引,以确保社会主义核心价值观得到正确理解和适用。

关键词：社会主义核心价值观司法裁判裁判规范释法说理

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Fe2+-Coupled Organic-Substrate-Enhanced Nitrogen Removal in Two-Stage Anammox Biofilm Reactors

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Processes 2025年第5期13卷 1603-1603页

作者： Yingchun Bao Qilong Ge Siyuan Li Xiaowei Wang xuwen zheng zhenguo Chen Architecture & Engineers Co. Ltd. of Southeast University Nanjing 210096 China Hua An Biotech Co. Ltd. Foshan 528300 China School of Environment South China Normal University Guangzhou 510006 China

Anammox is a novel and energy-efficient biological nitrogen removal technology. Enhancing its performance in treating low-strength nitrogen wastewater is essential for expanding its practical applications. In response to challenges such as low nitrogen removal efficiency (NRE), poor operational stability, limited environmental resistance, and the interference of organic compounds commonly found in real wastewater, this study developed a two-stage upflow anammox biofilm reactor system (R1 and R2) enhanced by an Fe2+-coupled organic substrate strategy for deep nitrogen removal under low-nitrogen conditions. Results showed that sodium acetate at a chemical oxygen demand (COD) concentration of 40 mg/L provided the greatest enhancement to anammox activity, achieving an average total nitrogen removal efficiency (NRE) of 90.02%. However, the reactor performance was significantly inhibited under higher COD conditions (e.g., COD = 60 mg/L). Under an influent Fe2+ concentration of 10 mg/L, the reactors’ NRE increased and then decreased as the COD concentration rose from 0 to 100 mg/L, resulting in the highest efficiency being achieved at an average NRE of 94.11%, observed under 10 mg/L Fe2+ coupled with 60 mg/L of COD in the two-stage anammox system. Scanning electron microscopy revealed that the co-addition of Fe2+ and organic substrates led to the formation of granular protrusions and pores on the sludge surface, which favored the structural stability of the biomass. At a COD level of 40 mg/L, the contents of extracellular polymeric substances and heme c in anammox biofilm were significantly higher compared to the addition of 10 mg/L Fe2+ alone, whereas excessive COD inhibited both indicators. These findings suggest that moderate levels of Fe2+ coupled with organic matter can promote anammox activity for deep nitrogen removal, while excessive organics have inhibitory effects. This study provides theoretical support for enhancing nitrogen removal from low-strength wastewater

关键词： biological nitrogen removal anammox Fe organic substrates enhancement

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基于FPGA的图像去雾算法优化设计

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集成电路与嵌入式系统 2024年第12期24卷 25-32页

作者：严飞李楚郑绪文孟川刘银萍南京信息工程大学自动化学院南京210044 江苏省大气环境与装备技术协同创新中心南京210044 南京信息工程大学应急管理学院南京210044

针对传统去雾算法的不足,且还需要满足去雾系统的实时性要求,提出了一种改进后去雾算法并结合FPGA进行设计。首先,采用高斯低通滤波器保留图像低频信息;其次,结合暗通道先验理论求取有雾图像的粗糙透射率图并对其进行双边滤波获取细化... 详细信息

针对传统去雾算法的不足,且还需要满足去雾系统的实时性要求,提出了一种改进后去雾算法并结合FPGA进行设计。首先,采用高斯低通滤波器保留图像低频信息;其次,结合暗通道先验理论求取有雾图像的粗糙透射率图并对其进行双边滤波获取细化透射率图;最后,通过雾天成像模型进行计算得到去雾后的图像。同时,结合FPGA对改进后的算法进行优化设计。实验结果表明,改进后的去雾算法相较于其他去雾算法,对含有高亮区域图像的去雾效果有明显增强。在FPGA平台上进行视频图像去雾处理时,速度可以达到60 f/s,能够满足实时性要求。

关键词：图像去雾 FPGA 暗通道先验实时性

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Characterizing local antibody responses in the muscle of inclusion body myositis patients

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Journal of Autoimmunity 2025年 154卷 103437-103437页

作者： Jayaraman, Sahana Wilson, Andrew zheng, xuwen Alice Montagne, Janelle M. Pinal-Fernandez, Iago Mammen, Andrew L. Lloyd, Thomas E. Larman, H. Benjamin Institute for Cell Engineering Division of Immunology Department of Pathology Johns Hopkins School of Medicine Baltimore MD United States Department of Neurology Johns Hopkins School of Medicine Baltimore MD United States Department of Oncology Sidney Kimmel Comprehensive Cancer Center Johns Hopkins University School of Medicine Johns Hopkins University Baltimore MD United States Muscle Disease Section National Institute of Arthritis and Musculoskeletal and Skin Disease National Institutes of Health Bethesda MD United States Department of Neurology Baylor College of Medicine Houston TX United States

Objective: Sporadic inclusion body myositis (IBM) is the most common adult idiopathic inflammatory myopathy. IBM etiology has been elusive, due to both degenerative and autoimmune disease features found on muscle biopsy, and significant disease heterogeneity. Investigating the role of antibodies in the muscle of IBM patients may improve our understanding of disease pathogenesis. Methods: We used an IBM xenograft mouse model in which muscle biopsy tissue from IBM patients (n = 98) and controls (n = 131;including 54 from other types of myopathy) were implanted into immunodeficient mice (NOD-Rag1^null-IL2rγ^null). We quantified the amount of human IgG, IgA, and IgM in xenografted mouse sera using MesoScale Diagnostics (MSD) assay. We detected donor-derived antibody reactivities targeting autoantigens and infectious agents using Phage ImmunoPrecipitation Sequencing (PhIP-Seq). Finally, we used FR3 AmplifiKation Sequencing (FR3AK-Seq) to sequence the antibody mRNAs from a separate cohort of 146 patient biopsies (14 IBM, 22 healthy controls, 110 other myositis subtypes). Results: With the MSD assay we found human IgG, IgA, and IgM in a larger percentage of IBM xenografted mice versus controls. Using PhIP-Seq, we found anti-microbial reactivities secreted from IBM muscle are prevalent amongst a healthy control population but autoantigen reactivities in IBM are more unique at the peptide and protein level. Additionally, NT5C1A (IgG/IgA and IgM) and TIF1γ (IgG/A) autoantibodies are secreted from muscle tissues of 4/18 and 10/18 IBM xenograft donors, respectively. Conclusion: Our characterization of antibody responses within the muscle of IBM patients reveals that muscle-infiltrating B cells produce both disease-associated autoantibodies and a broad spectrum of antibodies targeting non-self antigens. © 2025 Elsevier Ltd

关键词： Antibodies Antibody-profiling technologies Muscle-specific immune response Myositis Reactome profiling Repertoire sequencing

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