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能源保供下的国家能源集团重载铁路应急管理体系研究

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铁道货运 2024年第8期42卷 62-68页

作者：兰力何宇强陈会波尚强伟王剑飞国家能源投资集团有限责任公司国能朔黄铁路发展有限责任公司河北肃宁062350 国家能源投资集团有限责任公司国能运输技术研究院有限责任公司北京100080

能源保供背景下,紧张的运输能力、复杂的线路条件、紧缺的应急资源及频发的极端天气等因素给国家能源集团重载铁路的运输安全带来诸多挑战。在分析国家能源集团重载铁路应急管理现状与问题的基础上,提出了1个安全监测、预警及调度指挥平... 详细信息

能源保供背景下,紧张的运输能力、复杂的线路条件、紧缺的应急资源及频发的极端天气等因素给国家能源集团重载铁路的运输安全带来诸多挑战。在分析国家能源集团重载铁路应急管理现状与问题的基础上,提出了1个安全监测、预警及调度指挥平台,1套3级路地联动快速应急响应体制机制,以及由精简高效的应急救援团队、覆盖全场景的应急救援预案体系、完善的应急救援装备体系、“立足集团、辐射周边”的应急救援基地、完备的应急救援培训与演练方案构成的N项应急保障基础支撑,形成“1+3+N”的重载铁路应急管理体系,以期为我国能源保供下的重载铁路运输应急管理提供参考。

关键词：能源保供重载铁路应急管理救援基地发展对策

Numerical study on the filtration characteristics of fine particles in granular bed filter at high temperature

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Particuology 2024年第10期93卷 41-53页

作者： Kangning Zhu Jie Cai Yuan Li Xiaoyou Shen jianfei Xi Yunjun wang Zhongzhu Gu School of Energy and Mechanical Engineering Nanjing Normal UniversityNanjing210023China

Granular bed filter(GBF)has become one of the current research hot topics due to its excellent performance in removing fine *** this paper,a three-dimensional fixed bed GBF filtration model was established and its accuracy was ***,the GBF filtration performance at high temperature were *** results demonstrate that elevating the temperature diminishes the filtration efficiency,albeit to a limited *** increasing of inlet gas velocity can significantly improve pressure drop for GBF and the filtration efficiency for fine particles of sizes larger than 5μ*** the diameter of stacked granular particle diameter grows,the filtration efficiency and pressure drop *** density of fine particles almost does not affect the filtration efficiency for fine particles of 1∼7μm,but a higher density leads to a higher filtration efficiency for fine particles of sizes bigger than 9μ***,as the fine particles size increases,the change of the filtration efficiency roughly goes through three stages:Stage 1:the filtration efficiency is basically unchanged;Stage 2:the filtration efficiency increases rapidly;Stage 3:the filtration efficiency increases steadily,but the rate of increase slows *** the increase of the fine particles Stokes number,the filtration efficiency of GBF will pass through two phases of stabilization and rapid increase.

关键词： Granular bed filter Fine particles High temperature Filtration efficiency

经皮椎间孔镜不同进针技术治疗腰椎间盘突出症患者的效果对比

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临床医学工程 2024年第2期31卷 141-142页

作者：孔维邦范世昌王剑飞张立东温应辉河南宏力医院骨科河南新乡453400

目的对比经皮椎间孔镜不同进针技术治疗腰椎间盘突出症患者的临床效果。方法选取2019年1月至2022年1月在我院行经皮椎间孔镜手术治疗的90例腰椎间盘突出症患者,随机分为两组各45例。对照组实施常规后入路进针,观察组实施后入路45°进... 详细信息

目的对比经皮椎间孔镜不同进针技术治疗腰椎间盘突出症患者的临床效果。方法选取2019年1月至2022年1月在我院行经皮椎间孔镜手术治疗的90例腰椎间盘突出症患者,随机分为两组各45例。对照组实施常规后入路进针,观察组实施后入路45°进针。比较两组的临床疗效、疼痛程度以及下肢功能。结果两组的治疗优良率比较,差异无统计学意义(P>0.05)。观察组术后6个月、术后1年的VAS评分均显著低于对照组(P <0.05)。观察组术后1年的ODI评分显著低于对照组(P <0.05)。结论经皮椎间孔镜手术经由常规后入路进针和后入路45°进针治疗腰椎间盘突出症的近期疗效相当,但后入路45°进针能够更明显地减轻患者术后远期疼痛,改善患者下肢功能。

关键词：经皮椎间孔镜手术腰椎间盘突出症疼痛程度下肢功能

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建筑学中绿色建筑设计的发展趋势分析

工程建设（维泽科技） 2024年第2期7卷 191-193页

作者：王建飞河北加壹建筑设计有限公司河北石家庄050000

随着全球对环境保护和可持续发展的重视,建筑行业作为能源消耗和碳排放的主要来源之一,被寄予了重要的改革期望,绿色建筑设计在建筑学领域的发展日益引起重视。文中从绿色建筑设计的基本原则、重要价值和要点入手,分析了其在建筑学中的... 详细信息

随着全球对环境保护和可持续发展的重视,建筑行业作为能源消耗和碳排放的主要来源之一,被寄予了重要的改革期望,绿色建筑设计在建筑学领域的发展日益引起重视。文中从绿色建筑设计的基本原则、重要价值和要点入手,分析了其在建筑学中的发展趋势。通过对施工场地规划、资源合理运用、建筑材料选择和建筑设施挑选等方面的探讨,强调了在施工现场布设、材料设备的选择与监管以及资源循环利用等方面的关键要点,对绿色建筑设计在建筑学中的未来发展相关趋势做出分析,主要包括相关制度逐渐完善、可再生能源广泛运用、设计更加科学合理、建筑设计产业实现转型发展以及绿色环保材料的全面普及。

关键词：建筑学绿色建筑设计发展趋势

Influence of erbium addition on microstructure and performances of AlSi10Mg alloy prepared by selective laser melting

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Journal of Rare Earths 2024年第10期42卷 1988-1994页

作者： Bin Chen Fuzhu wang Shiming Ren Peng Xia Zhipeng wang jianfei Hao Zhiping Chen Runxia Li Hongxiang Jiang Research Institute of Interdisciplinary Science&School of Materials Science and Engineering Dongguan University of TechnologyDongguan523808 China College of Materials Science and Engineering Shenzhen UniversityShenzhen518060China Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang1i0016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang110016China

The effect of rare earth addition on the microstructure and mechanical performances of as-cast and wrought Al alloys has been attracting increasing attention *** earth addition has great potential in modifying the structure and improving the properties of ***,there are currently few reports about the effect of rare earth addition on the microstructure and performances of Al alloys prepared via selective laser ***,AlSi10Mg alloys were manufactured using selective laser melting,and the effect of Er addition was *** results indicate that Er addition leads toα-Al refinement and modifies the minority Si *** formation of the Al_(3)Er phase induced by Er addition enhances the stren gth of the *** of the Si phase also increases *** strategy can help improve the mechanical performance of alum inum alloys prepared via selective laser melting.

关键词： Aluminum alloy Selective laser melting Rare earths Er Microstructure Tensile performance

Nanomaterial-based flexible sensors for metaverse and virtual reality applications

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International Journal of Extreme Manufacturing 2023年第3期5卷 407-439页

作者： jianfei wang Jiao Suo Zhengxun Song Wen Jung Li Zuobin wang International Research Centre for Nano Handling and Manufacturing of China Changchun University of Science and TechnologyJilin130022People’s Republic of China Department of Mechanical Engineering City University of Hong KongKowloonHong Kong Special Administrative Region of ChinaPeople’s Republic of China

Nanomaterial-based flexible sensors(NMFSs)can be tightly attached to the human skin or integrated with clothing to monitor human physiological information,provide medical data,or explore metaverse *** have been widely incorporated into flexible sensors due to their facile processing,material compatibility,and unique *** review highlights the recent advancements in NMFSs involving various nanomaterial frameworks such as nanoparticles,nanowires,and *** triggering interaction interfaces between NMFSs and metaverse/virtual reality(VR)applications,***-mechanics-triggered,temperature-triggered,magnetically triggered,and neural-triggered interfaces,are *** the context of interfacing physical and virtual worlds,machine learning(ML)has emerged as a promising tool for processing sensor data for controlling avatars in metaverse/VR worlds,and many ML algorithms have been proposed for virtual interaction *** paper discusses the advantages,disadvantages,and prospects of NMFSs in metaverse/VR applications.

关键词： flexible sensors metaverse virtual reality human-computer interaction machine learning

Enhancing the Circularly Polarized Luminescence of Self-assembled Cyanostilbenes through Extended π-Conjugation

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Chinese Journal of Chemistry 2024年第2期42卷 135-141页

作者： Tongjin Lv Song Wu Yu Jin jianfei Ma Sixun Jiang Yuncong Xue Feng wang Key Laboratory of Precision and Intelligent Chemistry Department of Polymer Science and EngineeringUniversity of Science and Technology of ChinaHefeiAnhui 230026China Department of Thoracic Surgery Shanghai Jiao Tong University Affiliated Sixth People's HospitalShanghai 200233China

Chiral supramolecular assembly of π-conjugated luminophores provides a promising avenue for enhancing circularly polarized *** this study,we shed light on the impact of π-conjugation length on circularly polarized luminescent performance of the resulting supramolecular assemblies,by designing a tetra-cyanostilbene monomeric compound alongside two dicyanostilbene control *** cyanostilbene-based compounds possess the ability to form chiral supramolecular polymers in toluene,driven by a synergistic combination of intermolecular hydrogen bonding and π-stacking *** extended π π-aromatic skeleton brings bathochromic-shifted fluorescence and enhanced intermolecular stacking capability for the tetra-cyanostilbene ***,chiral supramolecular assemblies formed by the tetra-cyanostilbene compound demonstrate a remarkable two-fold increase in g_(lum) values relative to the assemblies formed by the dicyanostilbene ***,this study provides valuable insights into the relationship between-conjugation length and the circularly polarized luminescent performance of π-conjugatedsupramolecularassemblies.

关键词： Self-assembly Supramolecular polymer Supramolecular chirality Circularly polarized luminescence Cyanostilbene πInteractions Aggregation Nanostructures

Study on the Natural Gas Pricing Strategies in Beijing

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International Journal of Technology Management 2014年第4期 78-80页

作者： jianfei SHEN Yige wang School of Business Administration North China Electric Power University Beijing 102206 China

1 Background The Decision of the central Committee of the Communist Party of China about Comprehensively Deepening the Reform of Several Major Issues, which was approved at the third plenary session of the 18th CPC＇... 详细信息

关键词：定价策略天然气中国共产党北京定价机制委员会

Recent Progress in Fiber-Optic Hydrophones

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Photonic Sensors 2021年第1期11卷 109-122页

作者： Zhou MENG Wei CHEN jianfei wang Xiaoyang HU Mo CHEN Yichi ZHANG College of Meteorology and Oceanology National University of Defense TechnologyChangsha410073China Academy of Artillery and Air Defense Nanjing210000China

Fiber-optic hydrophone (FOH) is a significant type of acoustic sensor, which can be used in both military and civilian fields such as underwater target detection, oil and natural gas prospecting, and earthquake inspection. The recent progress of FOH is introduced from five aspects, including large-scale FOH array, very-low-frequency detection, fiber-optic vector hydrophone (FOVH), towed linear array, and deep-sea and long-haul transmission. The above five aspects indicate the future development trends in the FOH research field, and they also provide a guideline for the practical applications of FOH as well as its array.

关键词： Fiber-optic hydrophone large-scale array very-low-frequency detection fiber-optic vector hydrophone towed linear array deep sea long-haul fiber transmission