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

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

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Size effect of Si particles on the electrochemical performances of Si/C composite anodes

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Chinese Physics B 2018年第8期27卷 598-604页

作者： bonan liu Hao Lu Geng Chu Fei Luo Jieyun Zheng Shimou Chen Hong Li Beijing National Laboratory for Condensed Matter Physics Institute ol PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Green Process Engineering State Key Laboratory of Multiphase Complex SystemsInstitute of Process EngineeringChinese Academy of SciencesBeijing 00190China Tianmu Energy Anode MateriM Ltd.Co. Changzhou 213300China

A series of Si/C composites were fabricated based on pitch and Si powders with particle sizes of 30, 100, 500, and 3000 nm. The size effects of the Si particles in the Si/C composites were investigated for lithium-ion battery anodes. The nanoscale Si and Si/C composites exhibited good capacity retentions. Scanning electron microscopy showed that exterior and interior cracks emerging owing to volume expansion as well as parasitic reactions with the electrolyte could well explain the performance failure.

关键词： silicon-carbon composite solid-electrolyte interphase size effect, anode, volume expansion

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Encrypted optical fiber tag based on encoded fiber Bragg grating array

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International Journal of Extreme Manufacturing 2023年第3期5卷 658-665页

作者： Zhihao Cai Bozhe Li Zhiyong Bai Dejun liu Kaiming Yang bonan liu Cong Zhao Mengqiang Zou Jie Zhou Shangben Jiang Jingyi Huang Li liu Xuming Zhang Junle Qu Yiping Wang Changrui Liao Shenzhen Key Laboratory of Photonic Devices and Sensing Systems for Internet of Things Guangdong and Hong Kong Joint Research Centre for Optical Fibre SensorsState Key Laboratory of Radio Frequency Heterogeneous IntegrationShenzhen UniversityShenzhen 518060People’s Republic of China Shenzhen Key Laboratory of Ultrafast Laser Micro/Nano Manufacturing Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education/Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China Guangdong Laboratory of Artificial Intelligence and Digital Economy(SZ) Shenzhen 518107People’s Republic of China Department of Electronic Engineering Chinese University of Hong KongHong KongPeople’s Republic of China Department of Applied Physics The Hong Kong Polytechnic UniversityHongKongPeople’sRepublic of China

Optical fibers are typically used in telecommunications services for data transmission,where the use of fiber tags is essential to distinguish between the different transmission fibers or channels and thus ensure the working functionality of the communication *** physical entity marking methods for fiber labeling are bulky,easily confused,and,most importantly,the label information can be accessed easily by all potential *** work proposes an encrypted optical fiber tag based on an encoded fiber Bragg grating(FBG)array that is fabricated using a point-by-point femtosecond laser pulse chain inscription *** with different resonant wavelengths and reflectivities are realized by adjusting the grating period and the refractive index *** is demonstrated that a binary data sequence carried by a fiber tag can be inscribed into the fiber core in the form of an FBG array,and the tag data can be encrypted through appropriate design of the spatial distributions of the FBGs with various reflection wavelengths and *** proposed fiber tag technology can be used for applications in port identification,encrypted data storage,and transmission in fiber networks.

关键词： fiber Bragg grating femtosecond laser micromachining encrypted information optical fiber tag

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A Probe-Shaped Sensor With FBG and Fiber-Tip Bubble for Pressure and Temperature Sensing

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Photonic Sensors 2021年第4期11卷 411-417页

作者： bonan liu Junxian LUO Shen liu Yanping CHEN Bo HUANG Changrui LIAO Yiping WANG Shenzhen Key Laboratory of Photonic Devices and Sensing Systems for Internet of Things College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China Guangdong and Hong Kong Joint Research Centre for Optical Fibre Sensors Shenzhen UniversityShenzhen 518060China

A probe-shaped sensor for simultaneous temperature and pressure measurement was reported in this *** effective length of the sensor was〜2 mm,consisting of a fiber Bragg grating(FBG)and a Fabry-Perot interferometer(FPI)with a nano silica *** response sensitivities of the sensor for pressure and temperature were measured as-0.98 nm/MPa and 11.10pm/℃,*** sensor had an extremely low cross-sensitivity between pressure and temperature,which provided a significant potential in dual-parameter sensing.

关键词： Fabry-Perot interferometer fiber Bragg grating fiber optics sensors

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Influence of carbon coating on the electrochemical performance of SiO@C/graphite composite anode materials

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Chinese Physics B 2019年第6期28卷 438-445页

作者： Hao Lu Junyang Wang bonan liu Geng Chu Ge Zhou Fei Luo Jieyun Zheng Xiqian Yu Hong Li Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of Sciences(CAS)Beijing 100049China CAS Research Group on High Energy Density Lithium Batteries for EV Institute of ChemistryChinese Academy of SciencesBeijing 100190China Key Laboratory of Green Process Engineering State Key Laboratory of Multiphase Complex SystemsInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China Tianmulake Excellent Anode Materials Co. Ltd.Changzhou 213300China

Silicon monoxide(SiO) has been considered as one of the most promising anode materials for next generation highenergy-density Li-ion batteries(LiBs) thanks to its high theoretical capacity. However, the poor intrinsic electronic conductivity and large volume change during lithium intercalation/de-intercalation restrict its practical applications. Fabrication of SiO/C composites is an effective way to overcome these problems. Herein, a series of micro-sized SiO@C/graphite(Si0@C/G) composite anode materials, with designed capacity of 600 mAh·g-1, are successfully prepared through a pitch pyrolysis reaction method. The electrochemical performance of SiO@C/G composite anodes with different carbon coating contents of 5 wt%, 10 wt%, 15 wt%, and 35 wt% is investigated. The results show that the SiO@C/G composite with15-wt% carbon coating content exhibits the best cycle performance, with a high capacity retention of 90.7% at 25℃ and90.1% at 45 0 C after 100 cycles in full cells with LiNi0.5Co0.2Mn0.3O2 as cathodes. The scanning electron microscope(SEM) and electrochemistry impedance spectroscopy(EIS) results suggest that a moderate carbon coating layer can promote the formation of stable SEI film, which is favorable for maintaining good interfacial conductivity and thus enhancing the cycling stability of SiO electrode.

关键词： lithium-ion battery silicon monoxide carbon coating anode material

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The R&D of a Novel Sulfur Tolerant CO Shift Catalyst and Its Application in the Integrated Low Water Gas Ratio Process

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Advances in Materials Physics and Chemistry 2017年第4期7卷 113-122页

作者： bonan liu Jiefei Xiao Tiancun Xiao Qiuyun Zong 1State Key Laboratory of Heavy Oil Processing China University of Petroleum (Beijing) Beijing China Qingdao LianXin Catalytic Materials Co. Ltd. Qingdao China Inorganic Chemistry Laboratory University of Oxford Oxford UK

The QDB-5 sulfur tolerant CO shift catalyst, with anti-methanation property by supported compositing alkali promoters, has been proved to effectively reduce the outlet methane content in the condition of a low water gas ratio. Thus, a new technology based on a lower water/gas ratio than before has been developed with the new catalyst. The CO conversion at lower temperatures and catalyst stability were confirmed by long term industrial application. The high temperature catalyst performance also showed a better result than the conventional commercial catalyst, with higher CO conversion and well controlled methane outlet. Our research and the industrial application of catalyst have shown the importance of alkali metals as core promoters for such kind of catalysts.

关键词： Shell Coal Gasification Process Low Water Gas Ratio Methanation Alkali Metal Promoters Industrial Application

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A scoring system for prediction of early recurrence after liver resection for Barcelona Clinic Liver Cancer stage B hepatocellular carcinoma

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Chinese Medical Journal 2014年第24期127卷 4171-4176页

作者： Qian Honggang Wei Meng Qiu Hu Wu Jianhui liu bonan Lyu Ang liu Qiao Li Chengpeng Leng Jiahua Department of Hepato-Pancreato-Biliary Surgery Peking University School of Oncology Beijing Cancer Hospital Beijing 100142 China

Background The management of Barcelona Clinic Liver Cancer （BCLC） stage B hepatocellular carcinoma （HCC） is controversial due to the early recurrence after curative hepatectomy, and many variables were related to the prognosis. The purpose of this study was to predict the tumor recurrence in early postoperative period of the patients with BCLC stage B HCC. Methods From January 2004 to January 2012, 104 patients with BCLC stage B HCC underwent hepatectomy. Clinicopathological factors and follow-up data were statistically analyzed to establish a predicting scoring system. Results The overall survival rates for one, three, and five years were 69.2%, 52.7%, and 42.3%, and the disease-free survival rates for one, three, and five years were 52.9%, 47.3%, and 37.5%, respectively. The multiple factors analysis showed that the micro-vessel invasion, lymph nodes metastasis, multiple lesions, and the high expression of HMGB1 were independent factors （P 〈0.05）. A scoring system was established to predict the early recurrence within one year after the surgery for BCLC stage B HCC, according to the analysis results with a specificity of 85.1% and a sensitivity of 80.3%. Conclusion Variant clinicopathological factors were associated with early postoperative recurrence for BCLC stage B HCC and recurrence early after hepatectomy was more likely in patients with a higher score of the scoring system.

关键词： hepatocellular carcinoma hepatectomy postoperative recurrence high mobility group box 1 protein

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Performance and Industrial Application of New-Type Sulfur Tolerant CO Shift Catalyst QDB-04

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Open Journal of Inorganic Chemistry 2016年第1期6卷 15-22页

作者： bonan liu Tiancun Xiao Peter P. Edwards Jiefei Xiao Gao Hui Qiuyun Zong Inorganic Chemistry Laboratory Oxford University Oxford UK Qindao Lianxin Catalytic Materials Co. Ltd Qingdao China

This paper presents the performance and characteristics of new-type sulfur tolerant shift catalyst QDB-04 and its industrial side-line test as well as the first-time industrial application in Lunan Chemical Fertilizer Plant of Shandong in China. The results show that the catalyst has high strength and strength stability, good low temperature activity and stability as well as low potassium bleeding ratio which well meet for the requirements of the methanol plant on catalyst performance in Lunan Chemical Fertilizer Plant.

关键词： Sulfur Tolerant Shift Catalyst Performance Industrial Side-Line Test Application

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基于等效介质模型和频变AVO反演的裂缝储层参数估算方法

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吉林大学学报（地球科学版） 2017年第1期47卷 234-244页

作者：李博南刘财郭智奇吉林大学地球探测科学与技术学院长春130026

由于裂缝性油气藏具有突出的资源潜力和经济效益,利用地震方法对裂缝储层进行精细的定量描述逐渐成为勘探地球物理的关键任务之一。为了克服以往数据驱动类反演方法无法直接获得裂缝参数、而基于静态等效介质模型驱动的反演方法无法描... 详细信息

由于裂缝性油气藏具有突出的资源潜力和经济效益,利用地震方法对裂缝储层进行精细的定量描述逐渐成为勘探地球物理的关键任务之一。为了克服以往数据驱动类反演方法无法直接获得裂缝参数、而基于静态等效介质模型驱动的反演方法无法描述孔隙内部结构和流体信息的缺点,笔者提出一种基于动态等效介质模型的储层定量描述新方法。该方法通过频变AVO(amplitude variation with offset)理论建立目标函数并使用全局最优化算法反演裂缝参数。一维和二维模型测试证实,由于充分利用了反射系数频变响应对裂缝密度和时间尺度因子的敏感性,反演方法可以对裂缝储层实现有效描述。

关键词：裂缝性油气藏频变AVO反演动态等效介质模型裂缝储层描述

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心肺运动试验在射血分数保留型心力衰竭的临床应用及研究进展

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中华心血管病杂志 2024年第6期52卷 712-717页

作者：刘勃楠齐国先田文西北大学附属医院、西安市第三医院心血管内科西安710018 中国医科大学附属第一医院老年医学科沈阳110001

心肺运动试验提供了循环、呼吸、血液、骨骼肌、神经体液等涉及有氧代谢系统运动生理学的综合评估,强调心-肺-细胞耦联。近些年由于心肺运动试验主要变量对各类疾病预后有很好的评估能力,使其在心脏病学中的应用逐渐被人们所熟知,尤其... 详细信息

心肺运动试验提供了循环、呼吸、血液、骨骼肌、神经体液等涉及有氧代谢系统运动生理学的综合评估,强调心-肺-细胞耦联。近些年由于心肺运动试验主要变量对各类疾病预后有很好的评估能力,使其在心脏病学中的应用逐渐被人们所熟知,尤其是在射血分数保留型心力衰竭(HFpEF)领域。随着心肺运动试验与其他技术联合应用的不断发展,心肺运动负荷超声心动图和有创性心肺运动试验都在HFpEF诊疗中显示出重要的价值。该文对心肺运动试验在HFpEF中的临床应用及最新研究进展进行综述。

关键词：运动试验射血分数保留型心力衰竭峰值摄氧量二氧化碳通气当量斜率心肺运动试验危险分层表运动负荷超声心动图有创性心肺运动试验

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