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面向协同探测的多机雷达功率时间联合优化分配算法

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指挥控制与仿真 2024年第1期46卷 118-130页

作者：张欣睿时晨光周建江南京航空航天大学雷达成像与微波光子技术教育部重点实验室江苏南京211106

针对多目标搜索及跟踪场景,研究了面向协同探测的多机雷达功率时间联合优化分配算法。首先,基于信号检测理论和克拉美-罗下界,分别推导了雷达搜索性能与跟踪性能评估指标;在此基础上,建立了面向协同探测的多机雷达功率时间联合优化分配... 详细信息

针对多目标搜索及跟踪场景,研究了面向协同探测的多机雷达功率时间联合优化分配算法。首先,基于信号检测理论和克拉美-罗下界,分别推导了雷达搜索性能与跟踪性能评估指标;在此基础上,建立了面向协同探测的多机雷达功率时间联合优化分配模型,即以最大化雷达工作性能指标为优化目标,以满足给定系统资源限制为约束条件,对雷达搜索及跟踪任务中节点选择、辐射功率和任务时间等参数进行联合优化设计;最后,针对上述优化问题,采用基于内点法和粒子群算法的三步分解算法进行求解。仿真结果表明,与现有算法相比,所提算法能够在满足给定系统资源限制的条件下,有效提高雷达系统搜索性能和跟踪精度。

关键词：多雷达系统雷达协同探测雷达资源分配多目标搜索多目标跟踪

New strategy to delay food spoilage:Application of new food contact material with antibacterial function

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Journal of Materials Science & Technology 2021年第11期70卷 59-66页

作者： xinrui zhang Xiaofang Liu Chunguang Yang Tong Xi Jinlong Zhao Lichu Liu Ke Yang School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang110016China Foshan Hospital of Traditional Chinese Medicine Foshan 528000China

Frequent food poisoning and food-borne diseases outbreaking in recent years have caused people to attach great attention to food safety,especially the food contact materials that are essential in the food industrial chains and daily lives,ensuring their clean sanitation are of great importance in blocking microbial contamination and spread of food-borne *** steel(SS)is one of the most accepted and widely used food contact material,and the Cu-bearing SS possesses excellent antibacterial performance and maintains the original mechanical properties of SS,maybe making it a better substitute for the conventional SS in the food *** advantages of bactericidal and antifouling properties of Cubearing SS,this study simulated a variety of food contact scenarios,explored a new strategy for food preservation and food safety by using Cu-bearing SS as a food contact *** results showed that the Cu-bearing SS could not only delay the spoilage of different foods by inhibiting the activity of microorganisms in foods,but also reduce the expressions of spoilage traits of bacteria as well as the formation of biofilms by quenching the quorum-sensing signals,and further creating a good bacteriostatic atmosphere for the contacted food and its surrounding *** addition,the remarkable antifouling property of Cu-bearing SS would give the material a self-cleaning feature for food applications,which can avoid secondary contamination of food as a source of *** study well demonstrates that the Cu-bearing SS has broad application potentials and prospects in the food area.

关键词： Cu-bearing stainless steel Antibacterial Food contact material Microbial contamination Food spoilage

食品中微塑料的来源、分布特征及毒理学研究进展

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现代食品科技 2024年第5期40卷 347-358页

作者：王惠萍汪桢冯志强张芯蕊王璐阳黄继红河南大学农学院省部共建作物逆境适应与改良国家重点实验室河南开封475004 中原食品实验室河南漯河462300 三全食品股份有限公司河南郑州450001 许昌学院食品与药学院河南许昌461000

食品已成为人体摄入微塑料(Microplastics,MPs)的主要来源。食品中的MPs主要来源于食品原料(包括鱼类、贝类、农作物、食盐和水等)、食品加工过程以及食品包装。MPs在食品中的丰度、形状、粒径及聚合物类型等分布特征与地理位置、人类... 详细信息

食品已成为人体摄入微塑料(Microplastics,MPs)的主要来源。食品中的MPs主要来源于食品原料(包括鱼类、贝类、农作物、食盐和水等)、食品加工过程以及食品包装。MPs在食品中的丰度、形状、粒径及聚合物类型等分布特征与地理位置、人类活动以及食品工业类型等因素相关。目前,MPs的检测方法包括扫描电子显微镜和能量色散x射线光谱联用(Scanning Electron Microscope-Energy Dispersive X-Ray Spectroscopy,SEM-EDS),傅里叶变换红外光谱(Fourier Transform Infrared Spectroscopy,FT-IR),拉曼光谱(Raman Spectroscopy,RS),热分析法与气相色谱-质谱(Gas Chromatography-Mass Spectrometry,GC-MS)联用法及上述方法的组合使用。此外,MPs内在的化学添加剂、从环境中吸附的污染物和有害微生物附着可能对人体产生健康风险,包括直接毒性、易位毒性以及复合毒性。已有研究证实炎症,氧化应激,细胞凋亡和线粒体功能障碍与MPs摄入量密切相关。该文综述了食品中MPs污染的来源、分布特征、检测方法和毒理作用,以期为食品中的MPs风险防控与未来研究提供参考。

关键词：微塑料来源分布特征毒性效应

Zein as a structural protein in gluten-free systems:an overview

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Food Science and Human Wellness 2021年第3期10卷 270-277页

作者： xinrui zhang Chunxia Dong Yayun Hu Mengnan Gao Guangzhong Luan College of Food Science and Engineering Northwest A&F UniversityYangling 712100China

Zein,a class of alcohol-soluble prolamines in maize endosperm,is mainly composed of α-zein,β-zein,andγ-*** has been recognized as a structural protein for various gluten-free systems since it can form glutenlike viscoelastic *** formation of viscoelastic zein network can make up for the structural defect of gluten-free doughs caused by the lack of *** make the most of structural functionality of zein in glutenfree foods,it is important to clearly elucidate the fundamental properties of zein *** this article,these properties have been discussed,analyzed and summarized from the relationship between protein network and structural functionality of zein,the feature and formation mechanism of zein network,factors affecting zein network and the applications of zein network in improving the quality of gluten-free *** addition,this article also looks forward to potential research areas on zein network.

关键词： Zein Gluten-free Network Glass transition

Akkermansia muciniphila对大鼠高温运动后器官损伤的影响

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中国微生态学杂志 2024年第2期36卷 125-134,146页

作者：杨展孙学伟秦明珂崔茜张昕蕊张若男路寒张明燕朱进郑峰唐成亮东部战区疾病预防控制中心江苏南京210002 滨州医学院基础医学院陆军军医大学军事预防医学系军队劳动卫生学教研室东部战区空军医院南京中医药大学医学院整合医学学院南京医科大学病原生物学系南京医科大学第二附属医院南京中医药大学金陵临床医学院

目的探讨嗜黏蛋白阿克曼菌(Akkermansia muciniphila,***)通过干预肠道微生态,对大鼠高温运动后的器官损伤的影响。方法采用6~8周龄的Sprague Dawley大鼠,随机分成对照组(n=5)、常温运动组(RT组,n=8)、高温运动组(HT组,n=8)、***干预组(... 详细信息

目的探讨嗜黏蛋白阿克曼菌(Akkermansia muciniphila,***)通过干预肠道微生态,对大鼠高温运动后的器官损伤的影响。方法采用6~8周龄的Sprague Dawley大鼠,随机分成对照组(n=5)、常温运动组(RT组,n=8)、高温运动组(HT组,n=8)、***干预组(AKK干预组,n=8)、高温粪菌移植组(HT.R组,n=4)和***粪菌移植组(AKK.R组,n=4),在力竭运动后采集大鼠的血液、组织及粪便样本,检测谷丙转氨酶(ALT)、谷草转氨酶(AST)、尿素氮(BUN)和肌酐(Cr)的变化。通过16S rRNA基因测序和GC-MS方法分析粪便中菌群和代谢产物的改变,对结肠组织和肝脏组织进行病理检测,采用免疫组化方法评估肠道屏障功能。结果HT组和AKK干预组大鼠在(35±2)℃、湿度(55±5)%的环境下平均运动时间分别为(13.76±3.454)和(19.55±1.997)min,差异有统计学意义(t=4.104,P=0.0011)。***干预后,大鼠血清的AST(U/mL)、ALT(U/mL)、BUN(mmol/L)和Cr(μmol/L)平均水平(3.953±1.877、2.622±1.086、10.040±1.088、65.800±12.010)均低于HT组(6.358±1.436、4.335±1.304、15.010±1.913、93.980±39.110),其中AST、ALT、BUN水平检测差异均有统计学意义(t=2.878、2.856、6.381,P=0.0122、0.0127、<0.0001)。肠道菌群组成结构在属水平上发生变化,粪便中代谢产物水平有不同程度的改变。病理结果显示,AKK干预组大鼠的肝脏损伤较HT组有显著缓解。AKK干预组大鼠的肠道屏障相关连接蛋白ZO-1和Occludin表达量的累积光密度值(6330±481.8、6140±281.7)较HT组(3425±257.0、3943±242.1)上调(t=9.216、10.250,P=0.0008、0.0005)。结论***能够在一定程度上通过维持肠道屏障功能,改善肠道微生态,减轻高温运动带来的肠道及肝脏损伤。

关键词：运动高温嗜黏蛋白阿克曼菌肠道菌群器官损伤

The effect of different layered materials on the tribological properties of PTFE composites

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Friction 2020年第3期8卷 542-552页

作者： Song LI Chunjian DUAN Xiao LI Mingchao SHAO Chunhui QU Di zhang Qihua WANG Tingmei WANG xinrui zhang State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China University of Chinese Academy ofSciences Beijing 100049China

Two-dimensional(2D)lamellar materials have unique molecular structures and mechanical properties,among which molybdenum disulfide(MoS2)and graphitic carbon nitride(g-C3N4)with different interaction forces served as reinforcing phase for polytetrafluoroethylene(PTFE)composites in the present *** stability,tribological and thermomechanical properties of composites were comprehensively *** was demonstrated that g-C3N4 improved elastic deformation resistance and thermal degradation *** addition of g-C3N4 significantly enhanced anti-wear performance under different loads and *** results indicated that PTFE composites reinforced by g-C3N4 were provided with better properties because the bonding strength of g-C3N4 derived from hydrogen bonds(H-bonds)was stronger than that of MoS2 with van der Waals ***,g-C3N4 exhibited better thermomechanical and tribological *** result of this work is expected to provide a new kind of functional filler for enhancing the tribological properties of polymer composites.

关键词： graphitic carbon nitride lamellar materials hydrogen bonds wear resistance

Dissolution and repair of passive film on Cu-bearing 304L stainless steels immersed in H_2SO_4 solution

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Journal of Materials Science & Technology 2018年第11期34卷 2149-2159页

作者： xinrui zhang Jinlong Zhao Tong Xi M.Babar Shahzad Chunguang Yang Ke Yang School of Materials Science and Engineering University of Science and Technology of China Institute of Metal Research Chinese Academy of Sciences

The antibacterial Cu-bearing 304 L stainless steel is a new kind of structural and functional integrated metal material. In this work, evolution behavior of passive film of different heat treated Cu-bearing 304 L stainless steel immersed in 0.5 M H2SO4 solution was investigated by using electrochemical measurements, atomic force microscopy（AFM） observation and X-ray photoelectron spectroscopy（XPS） *** results show that the solution and aging treated samples have the similar polarization behaviors. The passive film impedance experiences an initial decrease within 7 days followed by a subsequent increase,while the defect density of passive film presents the opposite trend. Meanwhile, the evolution of surface morphology and the estimated thickness of the passive film confirm that it experiences initial dissolution and follow-up repair. Furthermore, the Cr^3＋ content in passive film undergoes sequential reduction to increase, however the variation tendency of Cu^2＋ content is just opposite, indicating that the content variation of Cr and Cu in passive film reflects the competitive process of film dissolution and repair. In addition, compared with solution treated samples, aged samples have a bigger icorrvalue and the rougher passive film. This indicates that the passive film of solution treated steel is more compact and stable.

关键词： Cu-bearing stainless steel 304L-Cu Passive film

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初诊脑肿瘤病人肿瘤相关症状群构成差异研究

循证护理 2024年第9期10卷 1611-1616页

作者：张新蕊孙鹏 ALPHONCE M Nyalali 李峰山东大学护理与康复学院山东250000 山东第一医科大学附属肿瘤医院

目的:探讨肿瘤相关症状群在原发良性组、原发恶性组及继发转移组脑肿瘤病人之间的构成差异。方法:便利抽取2021年9月—2023年4月山东省某三级甲等医院收治的390例脑肿瘤病人,病人入院后采用中文版安德森症状评估量表(MDASI-ST)评估,采... 详细信息

目的:探讨肿瘤相关症状群在原发良性组、原发恶性组及继发转移组脑肿瘤病人之间的构成差异。方法:便利抽取2021年9月—2023年4月山东省某三级甲等医院收治的390例脑肿瘤病人,病人入院后采用中文版安德森症状评估量表(MDASI-ST)评估,采用探索性因子分析法提取症状群。结果:344例病人完成调查,析出胃肠道症状群、精神神经系统症状群和躯体应激症状群,胃肠道症状群、精神神经系统症状群以一致的内部症状稳定存在于原发良性组、原发恶性组及继发转移组脑肿瘤病人中;躯体应激症状群内部症状显示构成差异,原发恶性组较原发良性组脑肿瘤病人内部构成症状增加,包括理解困难、表达困难、口干和麻木感。疲劳、苦恼和急躁症状作为精神神经系统症状群的构成症状在不同肿瘤病人中均有较高发生率,在继发转移组脑肿瘤病人群体中发生率高达96.4%、94.6%和92.0%;除气短、癫痫和视力损害之外,其他症状在原发良性组、原发恶性组及继发转移组脑肿瘤病人中严重程度得分差异有统计学意义(P<0.05)。结论:原发恶性组脑肿瘤病人报告更多的躯体应激症状;精神神经系统症状的高发生率和症状严重程度差异提示临床脑肿瘤病人肿瘤间接相关症状管理的重要性以及临床症状灵活调控的必要性。

关键词：脑肿瘤症状群症状差异症状管理护理

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Bifunctional Two-Dimensional Nanocomposite with Electromagnetic Wave Absorption and Anti-bacterial Performance

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金属学报:英文版 2023年第9期36卷 1559-1571页

作者： Jiacheng Shen xinrui zhang Chunguang Yang Zixuan Lei Shuaizhen Li Lin Ma Dianyu Geng Song Ma Wei Liu Zhidong zhang Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Materials Science and Engineering University of Science and Technology of ChinaHefei230026China

In current electronic information era,the complex application circumstance of 5G devices pursues the exploration of multi-functional electromagnetic wave(EMW)absorbent materials and it has become the crucial focus in industrial development.A two-dimensional(2D)graphite nanosheet decorated by nickel nanocapsules(2D graphite/Ni@C nanocomposite)was fabricated to possess the EMW absorption and the Escherichia coli(***)anti-bacterial performance *** adjusting the filling ratio and injecting nitrogen doping,the value of minimum reflection loss is−36.08 dB and the effective absorption bandwidth reaches to 5.12 GHz(from 11.4 to 16.52 GHz)with the mass ratio of 30 wt%and the absorber thickness of 2 *** 2D nanocomposite simultaneously gets an excellent anti-bacterial function expressing an *** anti-bacterial rate of 92%during 24 h which is significantly correlated to the interaction between the nanostructure of the 2D nanographite and the nickel ion released from Ni@C *** work provides a new approach to develop a promising 2D anti-bacterial EMW absorber.

关键词： Bifunctional electromagnetic wave absorbent material Nickel-based two-dimensional nanocomposite E.coli anti-bacterial performance