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锂离子电池循环寿命研究综述

电源技术 2018年第7期42卷 1082-1084页

作者：陶文玉张敏徐霁旸合肥国轩高科动力能源有限公司安徽合肥230011

循环寿命是衡量锂离子电池的重要指标之一,其影响因素是多方面的。对近年来锂离子电池在循环寿命方面的研究进行综述,重点阐述了循环寿命的影响因素,包括电池材料的老化衰退、充放电制度、温度以及单体一致性等。另外,简单介绍了锂电池... 详细信息

循环寿命是衡量锂离子电池的重要指标之一,其影响因素是多方面的。对近年来锂离子电池在循环寿命方面的研究进行综述,重点阐述了循环寿命的影响因素,包括电池材料的老化衰退、充放电制度、温度以及单体一致性等。另外,简单介绍了锂电池循环寿命的预测方法。

关键词：锂离子电池循环寿命影响因素寿命预测

Threshold Selection and Resource Allocation for Quantized Identification

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Journal of Systems Science & Complexity 2024年第1期37卷 204-229页

作者： WANG Ying LI Xin ZHAO Yanlong ZHANG ji-Feng Key Laboratory of Systems and Control Institute of Systems ScienceAcademy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China School of Mathematical Sciences University of Chinese Academy of SciencesBeijing 100049China

This paper is concerned with the optimal threshold selection and resource allocation problems of quantized identification, whose aims are improving identification efficiency under limited resources. Firstly, the first-order asymptotically optimal quantized identification theory is extended to the weak persistent excitation condition. Secondly, the characteristics of time and space complexities are established based on the Cramér-Rao lower bound of quantized systems. On these basis, the optimal selection methods of fixed thresholds and adaptive thresholds are established under aperiodic signals, which answer how to achieve the best efficiency of quantized identification under the same time and space complexity. In addition, based on the principle of maximizing the identification efficiency under a given resource, the optimal resource allocation methods of quantized identification are given for the cases of fixed thresholds and adaptive thresholds, respectively, which show how to balance time and space complexity to realize the best identification efficiency of quantized identification.

关键词： Quantized output resource allocation system identification threshold selection.

Vitamin D-binding protein in plasma microglia-derived extracellular vesicles as a potential biomarker for major depressive disorder

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Genes & Diseases 2024年第2期11卷 1009-1021页

作者： Gaojia Zhang Ling Li Yan Kong Dandan xu Yu Bao Zhiting Zhang Zhixiang Liao jiao jiao Dandan Fan Xiaojing Long ji Dai Chunming Xie Zhiqiang Meng Zhijun Zhang Department of Neurology Affiliated Zhongda HospitalResearch Institution of NeuropsychiatrySchool of MedicineSoutheast UniversityNanjingJiangsu 210009China Department of Biochemistry and Molecular Biology School of MedicineSoutheast UniversityNanjingJiangsu 210009China Shenzhen Key Laboratory of Drug Addiction Brain Cognition and Brain Disease InstituteShenzhen Institute of Advanced TechnologyChinese Academy of Sciences (CAS)ShenzhenGuangdong 518000China CAS Key Laboratory of Brain Connectome and Manipulation The Brain Cognition and Brain Disease Institute (BCBDI)Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518055China Lauterbur Research Center for Biomedical Imaging Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518055China Shenzhen-Hong Kong Institute of Brain Sciences-Shenzhen Fundamental Research Institutions ShenzhenGuangdong 518000China Brain Cognition and Brain Disease Institute Department of Mental Health and Public HealthFaculty of Life and Health SciencesShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518055China

No well-established biomarkers are available for the clinical diagnosis of major depressive disorder(MDD).Vitamin D-binding protein(VDBP)is altered in plasma and postmortem dorsolateral prefrontal cortex(DLPFC)tissues of MDD ***,the role of VDBP as a potential biomarker of MDD diagnosis was further *** extracellular vesicles(EVs)and brain cell-derived EVs(BCDEVs)were isolated from the plasma of first-episode drug-naïve or drug-free MDD patients and well-matched healthy controls(HCs)in discovery(20 MDD patients and 20 HCs)and validation cohorts(88 MDD patients and 38 HCs).VDBP level in the cerebrospinal fluid(CSF)from chronic glucocorticoid-induced depressed rhesus macaques or prelimbic cortex from lipopolysaccharide(LPS)-induced depressed mice and wild control groups was measured to evaluate its relationship with VDBP in plasma microglia-derived extracellular vesicles(MDEVs).VDBP was significantly decreased in MDD plasma MDEVs compared to HCs,and negatively correlated with HAMD-24 score with the highest diagnostic accuracy among *** in plasma MDEVs was decreased both in depressed rhesus macaques and mice.A positive correlation of VDBP in MDEVs with that in CSF was detected in depressed rhesus *** levels in prelimbic cortex microglia were negatively correlated with those in plasma MDEVs in depressed *** main results suggested that VDBP in plasma MDEVs might serve as a prospective candidate biomarker for MDD diagnosis.

关键词： Biomarker Cerebrospinal fluid Major depressive disorder Microglia derived extracellular vesicles Vitamin-D binding protein

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分离纯化茄尼醇的新工艺

华西药学杂志 2008年第2期23卷 170-171页

作者：沈振涛许激扬江春艳熊巍旭中国药科大学生化教研室江苏南京210009

目的建立分离纯化茄尼醇的新方法。方法在酸性条件下,酯化茄尼醇粗品中的脂肪酸,萃取分离酯化产物与非酯化物。结果新方法制备出的茄尼醇含量在70%以上,茄尼醇提取率在60%以上。结论建立的新方法简便易行。

关键词：茄尼醇纯化酯化萃取烟叶提取物

改进YOLOv8的汽车表面伤损实例分割模型

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计算机工程与应用 2024年第14期60卷 197-208页

作者：谭旭赵骥辽宁科技大学计算机与软件工程学院辽宁鞍山114051

针对人工定损方式无法满足智能汽车时代的发展要求,及传统汽车伤损检测模型精度低、信息少、难部署等问题,提出了改进YOLOv8的汽车伤损实例分割模型EIS-YOLO。在主干网络中设计了一个多尺度特征融合与通道数减小的CRDB模块,取代传统C2f... 详细信息

针对人工定损方式无法满足智能汽车时代的发展要求,及传统汽车伤损检测模型精度低、信息少、难部署等问题,提出了改进YOLOv8的汽车伤损实例分割模型EIS-YOLO。在主干网络中设计了一个多尺度特征融合与通道数减小的CRDB模块,取代传统C2f模块,显著减少了参数量的同时提高了特征融合的能力;提出了保留高分辨率分支的HRFPN结构,以加强细节信息保留能力,增强细节与语义信息的交换,该结构通过AFF和BiAM注意力融合模块增强了深层传递,经由简化冗余连接的E-FPN完成特征融合。还增加了一个额外的输出头捕捉细小伤损,提高了模型对小目标伤损及伤损边缘的精确识别。在CarDD数据集上,主干网络部分提出的CRDB模块对比C2f模块实现了同架构下计算量减小20.15%,同时多任务平均准确率提升2个百分点,在此基础上,结合HRFPN结构与额外输出头设计的模型整体的准确率P_(B)、P_(M)相较于基准模型分别提升了4.4和6.6个百分点,且模型更轻量,计算复杂度更低。

关键词：汽车伤损检测 YOLO-Seg 注意力机制多尺度特征融合 CarDD汽车伤损数据

Load Testing in Bridge Maintenance

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Journal of Architectural Research and Development 2024年第3期8卷 63-68页

作者： Bo Liu xu Meng ji Li Zhi Tu China Merchants Chongqing Highway Engineering Testing Center CO. LTD.Chongqing 400060China Chongqing Construction Science Research Inspection and Testing Co. Ltd.Chongqing 400060China

Highway bridges are a crucial component in road transportation *** bridges must be maintained according to usage requirements *** results must be considered before devising a maintenance *** testing is a vital method of assessing the quality and performance of highway *** outcomes of these tests facilitate the formulation of maintenance *** article examines the definition of load testing,its significance,and the process of execution,with the goal of providing support for bridge inspection and maintenance.

关键词： Highway bridge Load test and inspection Bridge maintenance

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异构群智感知PPO多目标任务指派方法

控制理论与应用 2024年第6期41卷 1056-1066页

作者：杨潇郭一楠吉建娇刘旭中国矿业大学信息与控制工程学院江苏徐州221116 中国矿业大学(北京)机械与电气工程学院北京100083 中国矿业大学人工智能研究院江苏徐州221008

现有移动群智感知系统的任务指派主要面向单一类型移动用户展开,对于存在多种类型移动用户的异构群智感知任务指派研究相对缺乏.为此,本文针对异质移动用户,定义其区域可达性,并给出感知子区域类型划分.进而,兼顾感知任务数量和移动用... 详细信息

现有移动群智感知系统的任务指派主要面向单一类型移动用户展开,对于存在多种类型移动用户的异构群智感知任务指派研究相对缺乏.为此,本文针对异质移动用户,定义其区域可达性,并给出感知子区域类型划分.进而,兼顾感知任务数量和移动用户规模的时变性,构建了动态异构群智感知系统任务指派的多目标约束优化模型.模型以最大化感知质量和最小化感知成本为目标,综合考虑用户的最大任务执行数量、无人机的受限工作时间等约束.为解决该优化问题,本文提出一种基于近端策略优化的多目标进化优化算法.采用近端策略优化,根据种群的当前进化状态,选取具有最高奖励值的进化算子,生成子代种群.面向不同异构群智感知实例,与多种算法的对比实验结果表明,所提算法获得的Pareto最优解集具有最佳的收敛性和分布性,进化算子选择策略可以有效提升对时变因素的适应能力,改善算法性能.

关键词：异构群智感知多目标优化强化学习近端策略优化

Effects of Fermented Puffed Feather Meal on Growth Performance, Serum Biochemical Indices, Meat Quality, and Intestinal Microbiota in Broilers

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Journal of Northeast Agricultural University(English Edition) 2024年第03期 42-58页

作者： Lin Yu Chen Zhihui Wu Hongzhi ji Fengjie Liu yang Li jianing Yu Xilong Dou Renkai Yuan Hua yang Qinghui Li Zhongyu xu Liangmei College of Animal Science and Technology Northeast Agricultural University Institute of Tropical Crop Variety Resources Chinese Academy of Tropical Agricultural Sciences

This study aimed to investigate the effects of fermented puffed feather meal(FPFM) on growth performance, serum biochemical indices, meat quality, and intestinal microbiota in Arbor Acres(AA) broilers. A single-factor design was adopted, and four treatments were administered with five replicates to 240 one-day-old AA broilers. The control group(group A) received a basal diet, while the experimental groups received a basal diet plus 33%(group B), 67%(group C) and 100%(group D) FPFM, respectively. Compared with group A,(1) the average daily gain(ADG) in group C decreased(P<0.05), and the feed conversion ratio(FCR) in group D increased(P<0.05);(2) the level of serum urea nitrogen in treatment groups decreased(P<0.05), and the levels of triglyceride, high density lipoprotein, low density lipoprotein, cholesterol, and glucose contents in group D increased(P<0.05) at day 21;(3) the serum immunoglobulin M and immunoglobulin G in group B and the immunoglobulin A in group C increased(P<0.05) at day 21, and the serum immunoglobulin M and immunoglobulin G in group D decreased(P<0.05) at day 42;(4) the share force of breast muscle and thigh muscle in group D increased(P<0.05);(5) the villus height to crypt depth ratio in the jejunum of group B increased(P<0.05) at day 21, and the villus height in group C and D increased(P<0.05) at day 42;(6) the proteobacteria counts in the cecum digesta in treatment groups decreased(P<0.05) at day 21. The basal diet supplemented with 33% FPFM promoted protein metabolism, enhanced immunity and improved meat quality, promoted the digestion and absorption of nutrients, increased intestinal microbial diversity, and improved the content of beneficial bacteria without affecting the growth performance, it was possible to be used as a good substitute for fish meal.

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Effects of Fermented Puffed Feather Meal on Growth Performance,Serum Biochemical Indices,Meat Quality,and Intestinal Microbiota in Broilers

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Journal of Northeast Agricultural University(English Edition) 2024年第3期31卷 42-58页

作者： Lin Yu Chen Zhihui Wu Hongzhi ji Fengjie Liu yang Li jianing Yu Xilong Dou Renkai Yuan Hua yang Qinghui Li Zhongyu xu Liangmei College of Animal Science and Technology Northeast Agricultural UniversityHarbin 150030China Institute of Tropical Crop Variety Resources Chinese Academy of Tropical Agricultural SciencesHaikou 571101China

This study aimed to investigate the effects of fermented puffed feather meal(FPFM)on growth performance,serum biochemical indices,meat quality,and intestinal microbiota in Arbor Acres(AA)broilers.A single-factor design was adopted,and four treatments were administered with five replicates to 240 one-day-old AA *** control group(group A)received a basal diet,while the experimental groups received a basal diet plus 33%(group B),67%(group C)and 100%(group D)FPFM,*** with group A,(1)the average daily gain(ADG)in group C decreased(P<0.05),and the feed conversion ratio(FCR)in group D increased(P<0.05);(2)the level of serum urea nitrogen in treatment groups decreased(P<0.05),and the levels of triglyceride,high density lipoprotein,low density lipoprotein,cholesterol,and glucose contents in group D increased(P<0.05)at day 21;(3)the serum immunoglobulin M and immunoglobulin G in group B and the immunoglobulin A in group C increased(P<0.05)at day 21,and the serum immunoglobulin M and immunoglobulin G in group D decreased(P<0.05)at day 42;(4)the share force of breast muscle and thigh muscle in group D increased(P<0.05);(5)the villus height to crypt depth ratio in the jejunum of group B increased(P<0.05)at day 21,and the villus height in group C and D increased(P<0.05)at day 42;(6)the proteobacteria counts in the cecum digesta in treatment groups decreased(P<0.05)at day *** basal diet supplemented with 33%FPFM promoted protein metabolism,enhanced immunity and improved meat quality,promoted the digestion and absorption of nutrients,increased intestinal microbial diversity,and improved the content of beneficial bacteria without affecting the growth performance,it was possible to be used as a good substitute for fish meal.

关键词： fermented puffed feather meal(FPFM) growth performance serum biochemical indices meat quality intestinal microbiota