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Journal of Rare Earths 2022年第8期40卷 1199-1210页

作者： junbin ding Xinwei Yang Aiyong Wang Can Yang Yanglong Guo Yun Guo Li Wang Wangcheng Zhan Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis School of Chemistry&Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China Hudong Heavy Machinery Co. Ltd.Shanghai 200237China International Joint Laboratory of Catalytic Chemistry Department of ChemistryResearch Center of Nano Science and TechnologyCollege of SciencesShanghai UniversityShanghai 200444China State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhou 350108China

A series of Sm-Mn mixed oxide catalysts were prepared via precipitation using various precipitants,namely Na_(2)CO_(3)(NH_(4))_(2)CO_(3),and NH_(3)·H_(2)O,and evaluated for the selective catalytic reduction(SCR)of NO_(x)with NH_(3)at low temperatures.Various characterisation techniques were used to determine the physicochemical properties of the catalysts,and it is found that their catalytic performance is greatly influenced by the nature of the precipitation agent used.It is found that Sm_(0.1)Mn-Na_(2)CO_(3)and Sm_(0.1)Mn-(NH_(4))_(2)CO_(3)exhibit superior catalytic performance in the SCR reaction to that of Sm_(0.1)Mn-NH_(3)·H_(2)O due to an abundance of surface acid sites,high surface concentration of Mn^(4+),and high NO oxidation capacity.From in situ diffuse reflectance infrared Fourier transform spectroscopy(DRIFT)analysis,we conclude that the Sm-Mn catalysts follow both Eley-Rideal and Langmuir-Hinshelwood mechanisms,and that the Eley-Rideal mechanism is dominant at elevated temperatures.

关键词： Effect of precipitant Mn-based catalyst Selective catalytic reduction Rare earths

基于多目标狼群算法的机场行李导入系统仿真优化研究

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系统仿真学报 2024年第7期36卷 1655-1669页

作者：陶翼飞丁小鹏罗俊斌付潇吴佳兴李宜榕昆明理工大学机电工程学院云南昆明650504 昆明昆船逻根机场系统有限公司云南昆明650236

针对民航机场行李导入系统运行过程中旅客行李注入等待时间长、系统能耗高等问题,综合考虑虚拟视窗控制方式、收集带式输送机运行速度、虚拟视窗长度及同时开放值机柜台数量等关键控制参数对机场行李导入系统运行效率的影响,提出一种求... 详细信息

针对民航机场行李导入系统运行过程中旅客行李注入等待时间长、系统能耗高等问题,综合考虑虚拟视窗控制方式、收集带式输送机运行速度、虚拟视窗长度及同时开放值机柜台数量等关键控制参数对机场行李导入系统运行效率的影响,提出一种求解该问题的仿真优化框架。通过分析机场行李导入系统实际运行工况,建立参数化仿真优化模型。以最小化旅客行李注入平均等待时间和系统能耗为优化目标,结合系统设计和运行过程中的实际约束条件,建立该问题的数学模型,并设计了一种多目标自适应并行狼群算法进行求解。该算法针对所提问题特性及经典狼群算法易陷入局部最优和收敛速度慢等不足,提出一种混合整实数单链编码方式,融合反向学习策略生成初始种群,引入自适应游走概率机制和智能行为并行机制,采用局部和全局自适应邻域搜索及启发式保优策略实现狼群算法智能行为搜索,使用Pareto非支配排序进行寻优迭代并获得最优解集。以国内某大型国际航空枢纽机场行李导入系统为例设计不同规模多种算法对比实验,验证了所提方法的有效性和优越性。

关键词：机场行李导入系统关键控制参数仿真优化多目标自适应并行狼群算法 Pareto非支配排序

一例赤大袋鼠梭菌性肠炎的诊断和病原分离鉴定

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野生动物学报 2024年第2期45卷 403-408页

作者：董俊斌李静丁玉林王文龙高娃郑秉武张迪王金玲内蒙古农业大学兽医学院农业农村部动物疾病临床诊疗技术重点实验室呼和浩特010010 内蒙古自治区科学技术厅呼和浩特010000 内蒙古自治区蜱媒人畜共患传染病重点实验室河套学院医学系巴彦淖尔015000 呼和浩特市动物园呼和浩特010050 内蒙古通辽市科尔沁区畜牧水产工作站通辽028000

通过临床症状、尸体剖检、组织病理学、毒素实验和细菌分离鉴定的方法确诊了1例由A型产气荚膜梭菌(Clostridium perfringens)引起的赤大袋鼠(Macropus rufus)梭菌性肠炎的自然病例。动物园1只成年赤大袋鼠突然精神沉郁、厌食,于20 h后死... 详细信息

通过临床症状、尸体剖检、组织病理学、毒素实验和细菌分离鉴定的方法确诊了1例由A型产气荚膜梭菌(Clostridium perfringens)引起的赤大袋鼠(Macropus rufus)梭菌性肠炎的自然病例。动物园1只成年赤大袋鼠突然精神沉郁、厌食,于20 h后死亡,尸体角弓反张,腹围膨大。尸体剖检和组织学检查表明:胃肠道、肝脏和肾脏出现具有梭菌性肠炎证病意义的病变。小白鼠毒素实验结果显示,血样肠内容物内有急性致死性毒素。从出血的肠黏膜面分离到单一、有芽孢、粗大的革兰阳性杆菌,经产气荚膜梭菌毒素基因型多重PCR鉴定为A型产气荚膜梭菌。研究结果可为赤大袋鼠梭菌性肠炎的诊断和防控提供依据。

关键词：赤大袋鼠梭菌性肠炎出血性坏死性胃肠炎 A型产气荚膜梭菌

小麦WRKY转录因子TaWRKY72B的克隆、亚细胞定位及表达分析

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麦类作物学报 2024年第1期44卷 7-15页

作者：张丽甘露卢振华曹高燚邱丽娜丁博谢晓东秦志列王俊斌天津农学院天津市作物抗逆的机理及遗传改良国际联合研究中心天津300392 北京市农林科学院杂交小麦研究所北京100097 天津农学院基础科学学院天津300392

WRKY蛋白是一类转录因子,参与调控植物的多种生长发育和胁迫应答过程。为进一步探究WRKY在小麦响应逆境中的作用,本研究克隆了小麦中国春的TaWRKY72B基因,并对其进行了生物信息学、亚细胞定位和表达模式分析。结果表明,中国春的TaWRKY72... 详细信息

WRKY蛋白是一类转录因子,参与调控植物的多种生长发育和胁迫应答过程。为进一步探究WRKY在小麦响应逆境中的作用,本研究克隆了小麦中国春的TaWRKY72B基因,并对其进行了生物信息学、亚细胞定位和表达模式分析。结果表明,中国春的TaWRKY72B基因编码320个氨基酸,蛋白序列包含典型的WRKY保守结构域和C2H2锌指结构,分子量为33.94 kDa,理论等电点为6.60,是酸性亲水的不稳定蛋白,无信号肽序列,属非跨膜蛋白。二级结构预测表明,TaWRKY72B主要由无规则卷曲(61.25%)、α-螺旋(23.12%)、延伸链(11.88%)和β-转角(3.75%)组成。TaWRKY72B定位于细胞核,符合转录因子特征。系统进化树分析显示,TaWRKY72B蛋白与节节麦、大麦和水稻等禾本科作物的WRKY亲缘关系较近。启动子顺式作用元件预测结果表明,该基因含有多个与生长发育、激素信号途径以及非生物胁迫应答相关的顺式调控元件。TaWRKY72B表达受激素、高温、低温和盐诱导,推测该基因可能参与小麦逆境胁迫应答和多种激素信号途径。

关键词：小麦 WRKY转录因子基因克隆亚细胞定位表达分析

Structure-function integrated magnesium alloys and their composites

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Journal of Magnesium and Alloys 2023年第10期11卷 3511-3544页

作者： junbin Hou ding Li Zejia Liu Zhikang Ji Shoufu Guan Chongchao Li Xiaoguang Qiao Igor S.Golovin Mingyi Zheng School of Material Science and Engineering Harbin Institute of TechnologyHarbin 150001China Department of Physical Metallurgy of Non-Ferrous Metals National Research Technological University“MISiS”Leninskiy pr.4Moscow 119049Russia Moscow Polytechnic University B.Semenovskay 38Moscow 107023Russia

Magnesium-based materials not only exhibit desirable characteristics such as low density and high specific strength, but also possess exceptional functional properties, including high damping capacity, high thermal conductivity, high electromagnetic interference shielding capacity, flame retardancy, and dissolvability. However, achieving a balance between strength and functional properties remains a significant challenge in Mg alloys community. Typically, strength depends on the pinning effect of defects, such as solute atoms and second phases,which hinder dislocation motion. On the other hand, optimal functional properties usually necessitate relative perfect crystal structures, as the presence of solute atoms and second phases can have adverse effects on damping capacity and thermal conductivity. Balancing these conflicting requirements is difficult. The trade-off between strength and functional properties of the Mg alloys should be broken to meet the urgent need in aerospace, automotive, 3C(computers, communications, and consumer electronics) and energy industries for high performance structural-functional integrated Mg-based materials. This review summarizes recent progress in understanding the mechanisms and influencing factors for the functional properties of Mg alloys. The mechanisms underlying the trade-off between strength and functional properties of Mg alloys is discussed. The latest developed structural-functional integrated Mg alloys and their composites are summarized, including high strength Mg-based materials with high damping capacity/high thermal conductivity/strong electromagnetic shielding capability/excellent flame-resistance/high dissolution rate. The future works of developing structure-function integrated Mg-based materials are proposed.

关键词： Structure-function integrated Mg alloys Composites Strength Damping capacity Thermal conductivity Electromagnetic interference shielding Ignition resistance Dissolvability

Purification and characterization of acetylcholinesterase from brain tissues of Oreochromis aurea and its application in environmental pesticide monitoring

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Research in Cold and Arid Regions 2011年第4期3卷 339-343页

作者： YunHua ding XiaoMin Wu junbin Fang Life Science Department Huizhou University Huizhou Guangdong 516007 China

Acetylcholinesterase （ACHE） plays an important role in enzyme-based detection of pesticides in the environment. In this paper, ACHE from the Triton X-100 extract of brain tissues of Oreochromis aurea was purified by （NH4）2SO4 fractional precipitation, Sephadex G-100 gel filtration, and DEAE-cellulose ion exchange chromatography. Certain biochemical characterizations of the purified enzyme and inhibition of pesticides on the enzyme were also studied. The specific activity of this purified enzyme was 20.628 U/mg protein, fold of purification was 139, and recovery was 22.1%. The optimal temperature of this enzyme was between 35-40 ℃, and optimal pH was between 7.5-8.0. The Michaelis constant （Kin） for acetylthiocholine iodide was 0.183 mmol/L. The enzyme activity was inhibited by excess substrate, and optimal substrate concentration was 6 mmol/L. Four pesticides （dichlorvos, phoxim, triazophos, and methomyl） exhibited strong inhibitions on this enzyme with IC50 less than 5 μg/mL. This study suggests that Oreochromis aurea （tilapia） could be a good enzyme source for pesticide monitoring in water environments.

关键词： Oreochromis aurea acetylcholinesterase purification gel filtration ion-exchange chromatography pesticide sensitivity

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基于相位掩模板的常规光纤制备弱反射光栅

激光技术 2022年第2期46卷 149-154页

作者：顾宏灿姚高飞黄俊斌丁朋海军工程大学兵器工程学院武汉430033

为了探索采用常规单模光纤制备弱反射光纤光栅的可行性,以降低材料成本和传输损耗,基于相位掩模板法,在常规单模光纤上刻制弱反射光纤布喇格光栅(WFBG),并进行了实验验证。建立相位掩模板刻栅系统光场统一方程,分析光场分布对光纤布喇... 详细信息

为了探索采用常规单模光纤制备弱反射光纤光栅的可行性,以降低材料成本和传输损耗,基于相位掩模板法,在常规单模光纤上刻制弱反射光纤布喇格光栅(WFBG),并进行了实验验证。建立相位掩模板刻栅系统光场统一方程,分析光场分布对光纤布喇格光栅(FBG)中心波长和反射率的影响;采用传输矩阵法分析相位掩模板长度、平均折射率变化对FBG反射率和3dB带宽的影响,为WFBG刻制提供理论依据。采用248nm紫外准分子激光器在常规单模光纤上刻制WFBG,分析相位掩模板长度、曝光能量、曝光频率,曝光次数对WFBG中心波长、反射率和3dB带宽的影响,制备出反射率和3dB带宽分别约为0.0016,0.10nm和0.00006,0.34nm两种窄宽的WFBG。结果表明,基于相位掩模板法由紫外准分子激光对常规单模光纤多脉冲曝光,能够稳定刻制WFBG。该研究对WFBG制备的材料选型提供了参考。

关键词：光纤光学弱反射光纤布喇格光栅相位掩模板单模光纤衍射光场

基于时空卷积动态知识图谱的新能源消纳评估方法

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电力系统自动化 2023年第15期47卷 46-54页

作者：陈宗源余涛丁茂生潘振宁陈俊斌刘希喆华南理工大学电力学院广东省广州市510610 国网宁夏电力有限公司宁夏回族自治区银川市750001

为构建新能源消纳知识图谱,首先,将电网积累的海量调度运行数据以动态四元组的形式,显式地表达调度运行数据的时空关联关系。通过滑动时间窗口快速搜索、提取局部时空图,构建子图数据集。然后,时空同步图卷积网络对局部时空图进行高维... 详细信息

为构建新能源消纳知识图谱,首先,将电网积累的海量调度运行数据以动态四元组的形式,显式地表达调度运行数据的时空关联关系。通过滑动时间窗口快速搜索、提取局部时空图,构建子图数据集。然后,时空同步图卷积网络对局部时空图进行高维特征提取,充分挖掘历史数据的时空关联关系,利用新能源消纳知识图谱中存储的机理知识对模型进行引导,并通过多子图并行训练提升模型的学习效率。最后,基于中国西北某省级电网算例进行仿真和实验验证。结果表明,所提方法可以有效避免复杂的数学建模以及模型求解,相比于传统方法具有更高的评估精度与速度。

关键词：新能源消纳评估知识图谱时空同步图卷积网络时空图机理知识人工智能

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弱反射光纤光栅阵列制备、解调与应用进展

激光与光电子学进展 2021年第17期58卷 54-71页

作者：黄俊斌丁朋唐劲松海军工程大学兵器工程学院湖北武汉430033 海军工程大学电子工程学院湖北武汉430033

弱反射光纤光栅(WFBG)阵列由于具有单纤抗拉强度、大规模复用等特性,近年来得到广泛关注,其在大规模结构健康监测和甚低频水声信号探测等领域具有潜在的应用价值。系统地综述了WFBG阵列的制备、解调与应用进展。在WFBG阵列制备方面,刻... 详细信息

弱反射光纤光栅(WFBG)阵列由于具有单纤抗拉强度、大规模复用等特性,近年来得到广泛关注,其在大规模结构健康监测和甚低频水声信号探测等领域具有潜在的应用价值。系统地综述了WFBG阵列的制备、解调与应用进展。在WFBG阵列制备方面,刻栅装置主要以拉丝塔Talbot和相位掩模板技术为主,在光纤选型上则相继出现了紫外透明涂覆层光纤、掺铈光纤等。在信号解调方面,大致有时域波长、频域、微波光子和匹配干涉等四种解调技术。在应用方面,WFBG阵列可以作为制备激光器的器件和传感器应用于监测领域。

关键词：传感器弱反射光纤光栅拉丝塔光栅信号解调激光器制备结构健康监测

The olfactory route is a potential way for SARS-CoV-2 to invade the central nervous system of rhesus monkeys

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Signal Transduction and Targeted Therapy 2021年第5期6卷 1614-1624页

作者： Li Jiao Yun Yang Wenhai Yu Yuan Zhao Haiting Long Jiahong Gao Kaiyun ding Chunxia Ma Jingmei Li Siwen Zhao Haixuan Wang Haiyan Li Mengli Yang Jingwen Xu junbin Wang Jing Yang Dexuan Kuang Fangyu Luo Xingli Qian Longjiang Xu Bin Yin Wei Liu Hongqi Liu Shuaiyao Lu Xiaozhong Peng National Kunming High-Level Biosafety Primate Research Center Institute of Medical BiologyChinese Academy of Medical Sciences and Peking Union Medical CollegeKunmingYunnanChina State Key Laboratory of Medical Molecular Biology Department of Molecular Biology and BiochemistryInstitute of Basic Medical SciencesMedical Primate Research CenterNeuroscience CenterChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina Department of Anatomy Institute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina

Neurological manifestations are frequently reported in the COVID-19 patients.Neuromechanism of SARS-CoV-2 remains to be elucidated.In this study,we explored the mechanisms of SARS-CoV-2 neurotropism via our established non-human primate model of COVID-19.In rhesus monkey,SARS-CoV-2 invades the CNS primarily via the olfactory bulb.Thereafter,viruses rapidly spread to functional areas of the central nervous system,such as hippocampus,thalamus,and medulla oblongata.The infection of SARS-CoV-2 induces the inflammation possibly by targeting neurons,microglia,and astrocytes in the CNS.Consistently,SARS-CoV-2 infects neuro-derived SK-N-SH,glial-derived U251,and brain microvascular endothelial cells in vitro.To our knowledge,this is the first experimental evidence of SARS-CoV-2 neuroinvasion in the NHP model,which provides important insights into the CNS-related pathogenesis of SARS-CoV-2.

关键词： invasion inflammation system