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Ammonia pyrolysis oxidation excited by nanosecond pulsed discharge:Global/fluid models hybrid solution

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Journal of Energy Chemistry 2025年第1期100卷 385-396页

作者： Mingming Zhang Hanyu wu Qi Chen Jiaxin Yang Bonan Liu School of Mechanical Electronic and Control Engineering Beijing Jiaotong University China University of Petroleum

The kinetic characteristics of plasma-assisted oxidative pyrolysis of ammonia are studied by using the global/fluid models hybrid solution ***,the stable products of plasma-assisted oxidative pyrolysis of ammonia are *** results show that the consumption of NH3/O2and the production of N2/H2change linearly with the increase of voltage,which indicates the decoupling of nonequilibrium molecular excitation and oxidative pyrolysis of ammonia at low ***,the detailed reaction kinetics mechanism of ammonia oxidative pyrolysis stimulated by a nanosecond pulse voltage at low pressure and room temperature is *** on the reaction path analysis,the simplified mechanism is *** detailed and simplified mechanism simulation results are compared with experimental data to verify the accuracy of the simplified ***,based on the simplified mechanism,the fluid model of ammonia oxidative pyrolysis stimulated by the nanosecond pulse plasma is established to study the pre-sheath/sheath behavior and the resultant consumption and formation of key *** results show that the generation,development,and propagation of the pre-sheath have a great influence on the formation and consumption of *** consumption of NH3by the cathode pre-sheath is greater than that by the anode pre-sheath,but the opposite is true for OH and O（1S）.However,within the sheath,almost all reactions do not ***,by changing the parameters of nanosecond pulse power supply voltage,it is found that the electron number density,electron current density,and applied peak voltages are not the direct reasons for the structural changes of the sheath and ***,the discharge interval has little effect on the sheath structure and gas mixture *** research results of this paper not only help to understand the kinetic promotion of non-equilibrium excitation in the process of oxidative pyrolysis but also help to explore th

关键词： Nanosecond pulsed discharge Ammonia Oxidative pyrolysis Fluid model Global model

基于工作室联合体的创新性人才培养模式探索--以高职院校食品类专业群为例

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邯郸职业技术学院学报 2022年第1期35卷 62-66页

作者：和东芹李慧婉杨爱花武玉涛邯郸职业技术学院食品与生物工程系河北邯郸056005 邯郸职业技术学院河北邯郸056005

食品工业作为国民经济的支柱产业、民生行业,在新一代信息技术背景下急需大量创新性、复合型技术技能人才。介绍了工作室联合体的构成及意义,并重点阐述了基于工作室联合体的师资团队、课程体系、培养模式及评价体系为一体的创新性人才... 详细信息

食品工业作为国民经济的支柱产业、民生行业,在新一代信息技术背景下急需大量创新性、复合型技术技能人才。介绍了工作室联合体的构成及意义,并重点阐述了基于工作室联合体的师资团队、课程体系、培养模式及评价体系为一体的创新性人才培养模式构建策略。

关键词：工作室联合体创新人才培养模式

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剩磁条件下磁性体磁化方向相关估计方法

大地测量与地球动力学 2017年第7期37卷 756-760页

作者：李金朋张英堂范红波李志宁尹刚武禹陶军械工程学院七系中国空气动力研究与发展中心高速所 65185部队

针对强剩磁条件下磁化方向估计中存在的问题,提出在剩磁影响下磁性体磁化方向相关估计方法。首先,对磁倾角和磁偏角选取确定的参数范围,并以等间隔的步长进行递变,获得一系列的磁化方向数值;然后,根据不同的磁化方向对铁磁物质的实测磁... 详细信息

针对强剩磁条件下磁化方向估计中存在的问题,提出在剩磁影响下磁性体磁化方向相关估计方法。首先,对磁倾角和磁偏角选取确定的参数范围,并以等间隔的步长进行递变,获得一系列的磁化方向数值;然后,根据不同的磁化方向对铁磁物质的实测磁总场异常数值进行化极处理;最后,求解磁总场化极数据与实测归一化磁源强度数据的互相关系数,取互相关最大值对应的磁化方向作为最终结果。仿真和实验结果表明,本方法能有效估计出近等轴状磁性体的总磁化方向。

关键词：剩磁磁化方向化极归一化磁源强度互相关

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河北平原隆尧地裂缝成因机理与模式研究

水文地质工程地质 2020年第5期47卷 169-178页

作者：吴玉涛杨为民周俊杰于鸿坤李晓乐张田田万飞鹏中交(天津)生态环保设计研究院有限公司天津300461 中国地质科学院地质力学研究所北京100081 中国矿业大学地球科学与测绘工程学院北京100083 中兵勘察设计研究院有限公司北京100053 北京城建集团有限责任公司北京100088 中国地质大学(北京)中国地质科学院北京100083

隆尧地裂缝是华北平原地区规模最大、活动性最强、灾害程度最为严重的构造地裂缝,但其与断裂之间的成因研究一直缺少系统的证明材料和完整的理论分析,即隆尧地裂缝与断裂之间是怎样的成生关系仍较为模糊。文章根据现场调查、探槽、地球... 详细信息

隆尧地裂缝是华北平原地区规模最大、活动性最强、灾害程度最为严重的构造地裂缝,但其与断裂之间的成因研究一直缺少系统的证明材料和完整的理论分析,即隆尧地裂缝与断裂之间是怎样的成生关系仍较为模糊。文章根据现场调查、探槽、地球物理探测和钻孔联合剖面等方法,分析了隆尧地裂缝几何运动特点和深部构造特征,探讨了隆尧地裂缝的成因机理和模式。研究结果表明:隆尧地裂缝(主要指西段)的发育位置与隆尧活动断裂基本重合,地裂缝走向近EW,倾向南,倾角60°~80°,南盘相对北盘下降,具正断性;同时,地裂缝面处黏土层中发育擦痕,上盘发育的分支裂缝与主裂缝相交成“y”型,地裂缝上下盘位移差随深度增加;地球物理探测解译隆尧活动断裂上断点埋深40~50 m,钻孔联合剖面揭示隆尧地裂缝向下延伸与隆尧活动断裂上断点吻合。地裂缝发育位置、产状、几何特点、运动特征与物探解译、钻孔联合剖面揭示的隆尧活动断裂一致,因此,隆尧地裂缝与隆尧活动断裂直接相连。根据上述成因理论,提出了构造地裂缝的一种成因模式——断层直剪式,即:在区域应力加强或转变的基础上,基地隐伏断裂开始蠕滑运动,断层面或断层带向地表延伸,切穿第四系岩土层,在地表形成陡坎。并据此分析了隆尧地裂缝的形成、显现和发展过程,为断层直剪式地裂缝成因研究提供理论指导。

关键词：隆尧地裂缝隆尧活动断裂成因机理成因模式断层直剪式

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HRM3400B生料立磨的节能改造

水泥技术 2024年第3期 27-31页

作者：郭丹阳李建会武玉涛临澧冀东水泥有限公司湖南常德415000

某5000t/d水泥熟料生产线HRM3400B生料立磨系统存在耗电量高、阻力大、运行效率低、入磨物料综合水分高、系统漏风点多、漏风量大等问题。通过优化旋风筒进风口结构,加高旋风筒进风口及上壳体,加长旋风筒内筒,新增热风管道,增大入磨溜... 详细信息

某5000t/d水泥熟料生产线HRM3400B生料立磨系统存在耗电量高、阻力大、运行效率低、入磨物料综合水分高、系统漏风点多、漏风量大等问题。通过优化旋风筒进风口结构,加高旋风筒进风口及上壳体,加长旋风筒内筒,新增热风管道,增大入磨溜子角度,在排渣皮带机尾部增设缓冲箱,将磨辊密封罩更换为内部迷宫式新型密封罩,拆除旋风筒下部压力铰刀并更换为无动力翻板阀,将收尘器气缸全部更换为不锈钢材质等措施,生料立磨磨机压差降低183Pa,在线窑尾废气氧含量降低1.8%~2.0%,磨机电耗由16.33kW∙h/t降至13.70kW∙h/t,有效降低了生产成本,改造效果显著。

关键词：旋风筒无动力翻板阀入磨溜子漏风堵料节能降耗

Integrated framework for seismic fragility assessment of cable-stayed bridges using deep learning neural networks

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Science China(Technological Sciences) 2023年第2期66卷 406-416页

作者： PANG yutao YIN PengCheng WANG JianGuo wu Li Faculty of Engineering China University of Geosciences(Wuhan)Wuhan 430074China China Railway Siyuan Survey and Design Group Co. Ltd.Wuhan 430074China Department of Civil Geological and Mining EngineeringPolytechnique MontréalMontréal H3C 3A7Canada

The increasing intensity of strong earthquakes has a large impact on the seismic safety of bridges *** the key component in the transportation network,the cable-stayed bridge should cope with the increasing future hazards to improve seismic *** fragility analysis can assist the resilience assessment under different levels of seismic ***,such an analysis is computationally intensive,especially when considering various random *** present paper implemented the deep learning neural networks that are integrated into the performance-based earthquake engineering framework to predict fragility functions and associated resilience index of cable-stayed bridges under seismic hazards to improve the computational efficiency while having sufficient *** the proposed framework,the Latin hypercube sampling was improved with additional uniformity to enhance the training process of the neural *** well-trained neural network was then applied in a probabilistic simulation process to derive different component fragilities of the cable-stayed *** estimated fragility functions were combined with the Monte Carlo simulations to predict system *** proposed integrated framework in this study was demonstrated on an existing single-pylon cable-stayed bridge in *** reveal that this integrated framework yields accurate predictions of fragility functions for the cable-stayed bridge and has reasonable accuracy compared with the conventional methods.

关键词： deep learning neural network cable-stayed bridge fragility analysis uniform design method seismic resilience

新华XHA2200高能加速器影像引导系统不同配准算法对肺部靶区摆位误差的影响

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医疗装备 2022年第13期35卷 23-25页

作者：武玉涛王晓玲高娜郭楷沂源县人民医院山东淄博256100

目的探讨新华XHA2200高能加速器影像引导系统不同配准算法(灰度配准算法和骨配准算法)对肺部靶区摆位误差的影响。方法选取2020年8月至2021年2月在医院进行图像引导放射治疗的60例肺癌患者为研究对象,所有患者均采用新华XHA2200高能加... 详细信息

目的探讨新华XHA2200高能加速器影像引导系统不同配准算法(灰度配准算法和骨配准算法)对肺部靶区摆位误差的影响。方法选取2020年8月至2021年2月在医院进行图像引导放射治疗的60例肺癌患者为研究对象,所有患者均采用新华XHA2200高能加速器影像引导系统,治疗前均进行了锥形束CT(CBCT)扫描,首先通过手动配准分别对X、Y、Z 3个方向上的摆位误差进行分析,然后分别采用灰度配准算法和骨配准算法对X、Y、Z 3个方向上的摆位误差进行分析,最终得出灰度配准算法和骨配准算法与手动配准摆位误差的差异。结果灰度配准算法与手动配准在X、Y、Z方向上的摆位误差比较,差异均无统计学意义(P>0.05)。骨配准算法与手动配准在X方向上的摆位误差比较,差异无统计学意义(P>0.05);骨配准算法在Y、Z方向上的摆位误差大于手动配准,差异均有统计学意义(P<0.05)。结论相较于骨配准算法,新华XHA2200高能加速器影像引导系统灰度配准算法在肺癌患者中的配准结果更好。

关键词：图像引导放射治疗锥形束CT 图像配准摆位误差

影响生鲜农产品电商消费者满意度的常见因素及应对建议探讨

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现代食品 2023年第1期29卷 22-24页

作者：马邯生武玉涛宋运霞任启航邯郸职业技术学院河北邯郸056001

在“互联网+”背景下,越来越多的人将网上购买生鲜农产品作为一种生活方式,而如何在经营过程中提高消费者群体的满意度也成为电商需要重点考虑的问题。本文从消费者感知质量、消费者期望、消费者感知价值3个方面分析影响生鲜农产品电商... 详细信息

在“互联网+”背景下,越来越多的人将网上购买生鲜农产品作为一种生活方式,而如何在经营过程中提高消费者群体的满意度也成为电商需要重点考虑的问题。本文从消费者感知质量、消费者期望、消费者感知价值3个方面分析影响生鲜农产品电商消费者满意度的常见因素,并且从保证平台质量、保证产品质量、保证服务质量和确保产品价格合理4个角度系统性论述应对措施。

关键词：生鲜农产品电商消费者满意度影响因素对策建议

Propagating subduction initiation of the Caroline Plate at the Mussau Trench

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Science China Earth Sciences 2025年第1期 253-269页

作者： Chun-Feng LI Yongkang DENG Tao wu Dongdong DONG Guoliang ZHANG Jiazheng ZHANG yutao LIU Yaqing LI Fugui TANG Lulu ZHANG Department of Marine Sciences Zhejiang University Laboratory of Marine Mineral Resources Laoshan Laboratory Key Lab of Marine Geology and Environment Institute of Oceanology Chinese Academy of Sciences Key Lab of Ocean and Marginal Sea Geology South China Sea Institute of Oceanology Chinese Academy of Sciences Science & Technology on Integrated Information System Lab Institute of Software Chinese Academy of Sciences

New seismic imaging from the Mussau Trench confirms that, under horizontal compression on an oceanic plate boundary, it is within the young and weak oceanic plate that a trench will develop, and it is the young plate, not so long after its birth, that starts to subduct toward the old plate. The Mesozoic Pacific Plate cannot easily bend, under the joint horizontal compression and vertical gravity pull, even with a pre-existing weak zone in place and with a large age offset across the plate boundary. The bending of the Caroline Plate near the northern end of the Mussau Trench started only after a long-time span of trench migration, and/or after a prolonged transition from initial compression to trench development. Highly contrasting trench deformation and sedimentary accretion between two parallel seismic sections support an evident migration of underthrusting or significant longitudinal heterogeneity along the trench. The swift transition from underthrusting to non-thrusting can be explained by a counter-clockwise rotation of the Caroline Plate. That miniature accretionary wedges develop even before the subduction initiates imply strong compression and uplifting before the underthrusting can kick-start. Rotation of the Caroline Plate have been halted as the Mussau Trench is seismically rather quiet and the Lyra Trough to the east shows relaxational extension.

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