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管式反应器合成苯硫酚的工艺研究

青岛科技大学学报（自然科学版） 2017年第3期38卷 71-79页

作者：冯柏成解东于洪强刘冬梅青岛科技大学化工学院山东青岛266042 山东豪迈化工技术有限公司山东青岛266044

采用管式反应器,以卤代苯和H2S为原料,高温气相反应合成苯硫酚,研究了反应机理并通过傅里叶变换红外光谱(FT-IR)和核磁共振氢谱(1 H-NMR)对产物进行了表征。为探究管式反应器结构对气相反应的影响,利用流体力学软件FLUENT模拟管式反应... 详细信息

采用管式反应器,以卤代苯和H2S为原料,高温气相反应合成苯硫酚,研究了反应机理并通过傅里叶变换红外光谱(FT-IR)和核磁共振氢谱(1 H-NMR)对产物进行了表征。为探究管式反应器结构对气相反应的影响,利用流体力学软件FLUENT模拟管式反应器内流场情况。结果显示:通过优化反应器结构,改善了物料混合效果,显著提高了苯硫酚的产率。通过考察反应器结构、反应温度、物料物质的量比、停留时间对合成苯硫酚的影响,得出最佳工艺条件:氯苯为原料,反应温度为600℃,n(H2S)∶n(PhCl)=2.5∶1,物料的停留时间45s,苯硫酚的产率50.2%;溴苯为原料,反应温度为580℃,n(H2S)∶n(PhBr)=2∶1,物料的停留时间45s,苯硫酚的产率62.4%。实验结果表明:溴苯为原料,苯硫酚的产率更高,副反应少。利用管式反应器高温气相合成苯硫酚,生产效率高,具有良好的工业应用前景。

关键词：苯硫酚管式反应器优化设计流体动力学

Mechanistic insight into the synergy between nickel single atoms and nanoparticles on N-doped carbon for electroreduction of CO2

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Journal of Energy Chemistry 2025年第1期100卷 327-336页

作者： Mingdong Sun Wenwen Guan Cailing Chen Chao Wu Xiaoling Liu Biao Meng Tao Chen yu Han Jun Wang Shibo Xi yu Zhou State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University Advanced Membranes and Porous Materials Center Physical Sciences and Engineering Division King Abdullah University of Science and Technology Institute of Sustainability for Chemicals Energy and Environment A*STAR (Agency for Science Technology and Research) College of Materials Science and Engineering Sichuan University

The synergy of single atoms （SAs） and nanoparticles （NPs） has demonstrated great potential in promoting the electrocatalytic carbon dioxide reduction reaction （CO2RR）;however,the rationalization of the SAs/NPs proportion remains one challenge for the catalyst ***,a Ni2+-loaded porous poly（ionic liquids）(PIL) precursor synthesized through the free radical self-polymerization of the ionic liquid monomer,1-allyl-3-vinylimidazolium chloride,was pyrolyzed to prepare the Ni,N co-doped carbon materials,in which the proportion of Ni SAs and NPs could be facilely modulated by controlling the annealing *** catalyst Ni-NC-1000 with a moderate proportion of Ni SAs and NPs exhibited high efficiency in the electrocatalytic conversion of CO2into *** Ni K-edge X-ray absorption near-edge structure （XANES） spectra and theoretical calculations were conducted to gain insight into the synergy of Ni SAs and *** charge transfer from Ni NPs to the surrounding carbon layer and then to the Ni SAs resulted in the electron-enriched Ni SAs active *** the electroreduction of CO2,the coexistence of Ni SAs and NPs strengthened the CO2activation and the affinity towards the key intermediate of*COOH,lowering the free energy for the potential-determining*CO2→*COOH step,and therefore promoted the catalysis efficiency.

关键词： Single atom catalyst Synergy effect Carbon catalyst Electrocatalysis

Self-adapting radiation control method for RFS in tracking

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Journal of Systems Engineering and Electronics 2018年第2期29卷 244-255页

作者： LIU hongqiang yu Lei YANG Haiyan ZHOU Zhongliang Aeronautics and Astronautics Engineering College Air Force Engineering University Air Traffic Control and Navigation College Air Force Engineering University

The aim of this paper is to achieve the radio frequency stealth(RFS) during the course of tracking by controlling the radiation energy and the interval of a radar. Firstly, we build the model of probability of interception with the once radiation during the course of tracking. Secondly, we establish the model of the cumulative probability of interception to describe the effect of RFS throughout the tracking process and obtain two solutions that are minimizing the probability of interception and the radiation times to reduce the cumulative probability of interception. Thirdly, we propose a self-adapting radiation energy control method(SARE)to minimize the probability of interception. Fourthly, we propose a self-adapting radiation interval control method(SARI) to minimize radiation times. Fifthly, combining SARE with SARI, we propose a SARE-SARI control method(SAEI) during the course of ***, we compare SAEI with two others by simulation, and the results show the effect of RFS of SAEI is better than the other two,but we have to make a trade-off between the ability of RFS and the effect of tracking.

关键词： energy control radiation time intercept probability numerical integration genetic algorithm radio frequency stealth(RFS)

Silk damping in scalar-induced gravitational waves: a novel probe for new physics

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 79-85页

作者： Yan-Heng yu Sai Wang Theoretical Physics Division Institute of High Energy Physics Chinese Academy of Sciences School of Physics University of Chinese Academy of Sciences

Silk damping is well known in the study of cosmic microwave background（CMB） and accounts for suppression of the angular power spectrum of CMB on large angular multipoles. In this article, we study the effect of Silk damping on the scalar-induced gravitational waves（SIGWs）. Resulting from the dissipation of cosmic fluid, the Silk damping notably suppresses the energydensity spectrum of SIGWs on scales comparable to a diffusion scale at the decoupling time of weakly-interacting particles. The effect offers a novel observable for probing the underlying particle interaction, especially for those mediated by heavy gauge bosons beyond the standard model of particles. We anticipate that pulsar timing arrays are sensitive to gauge bosons with mass ～10～3-10～4 GeV, while space-and ground-based interferometers to those with mass ～10～7-1012GeV, leading to essential complements to on-going and future experiments of high-energy physics.

关键词： scalar-induced gravitational waves Silk damping new physics

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富血小板纤维蛋白在口腔种植学中的应用进展

口腔医学 2019年第1期39卷 71-76页

作者：吴岸谦于洪强丁鑫鑫周延民吉林大学口腔医学院口腔种植科吉林省牙发育及颌骨重塑与再生重点实验室吉林长春130021

富血小板纤维蛋白(platelet-rich fibrin,PRF)作为血小板浓缩制品其三维纤维组织结构能够贮存丰富的生长因子,对于口腔颌面部软硬组织缺损的愈合有显著的促进作用。PRF中内含大量的血小板,血小板内的多种细胞因子能够调节正常生长代谢,... 详细信息

富血小板纤维蛋白(platelet-rich fibrin,PRF)作为血小板浓缩制品其三维纤维组织结构能够贮存丰富的生长因子,对于口腔颌面部软硬组织缺损的愈合有显著的促进作用。PRF中内含大量的血小板,血小板内的多种细胞因子能够调节正常生长代谢,其大多通过与特异的高亲和力的细胞膜受体结合发挥其调节作用。如今在口腔种植领域中,PRF扮演着越来越重要的角色。本篇综述将对PRF在口腔种植领域中的最新进展进行描述。

关键词：富血小板纤维蛋白组织再生口腔种植

Dynamic Regulation of Hydrogen Bonding Networks and Solvation Structures for Synergistic Solar‑Thermal Desalination of Seawater and Catalytic Degradation of Organic Pollutants

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Nano-Micro Letters 2025年第2期17卷 548-565页

作者： Ming‑yuan yu Jing Wu Guang Yin Fan‑Zhen Jiao Zhong‑Zhen yu Jin Qu Beijing Key Laboratory of Advanced Functional Polymer Composites Beijing University of Chemical TechnologyBeijing 100029People’s Republic of China State Key Laboratory of Organic‑Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029People’s Republic of China

Although solar steam generation strategy is efficient in desalinating seawater,it is still challenging to achieve continuous solar-thermal desalination of seawater and catalytic degradation of organic ***,dynamic regulations of hydrogen bonding networks and solvation structures are realized by designing an asymmetric bilayer membrane consisting of a bacterial cellulose/carbon nanotube/Co_(2)(OH)_(2)CO_(3)nanorod top layer and a bacterial cellulose/Co_(2)(OH)_(2)CO_(3)nanorod(BCH)bottom ***,the hydrogen bonding networks inside the membrane can be tuned by the rich surface–OH groups of the bacterial cellulose and Co_(2)(OH)_(2)CO_(3)as well as the ions and radicals in situ generated during the catalysis ***,both SO_(4)^(2−)and HSO_(5)−can regulate the solvation structure of Na^(+)and be adsorbed more preferentially on the evaporation surface than Cl^(−),thus hindering the de-solvation of the solvated Na^(+)and subsequent nucleation/growth of ***,the heat generated by the solar-thermal energy conversion can accelerate the reaction kinetics and enhance the catalytic degradation *** work provides a flow-bed water purification system with an asymmetric solar-thermal and catalytic membrane for synergistic solar thermal desalination of seawater/brine and catalytic degradation of organic pollutants.

关键词： Solar steam generation Seawater desalination Catalytic degradation Bacterial cellulose Cobalt hydroxycarbonate nanorods

Boosting bidirectional sulfur conversion enabled by introducing boron-doped atoms and phosphorus vacancies in Ni2P for lithium-sulfur batteries

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Journal of Energy Chemistry 2025年第1期100卷 760-769页

作者： Lin Peng yu Bai Hang Li Meixiu Qu Zhenhua Wang Kening Sun Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology Beijing Key Laboratory of Chemical Power Source and Green Catalysis School of Chemistry and Chemical Engineering Beijing Institute of Technology

Lithium-sulfur （Li-S） batteries have gained great attention due to the high theoretical energy density and low cost,yet their further commercialization has been obstructed by the notorious shuttle effect and sluggish redox ***,we supply a strategy to optimize the electron structure of Ni2P by concurrently introducing B-doped atoms and P vacancies in Ni2P （Vp-B-Ni2P）,thereby enhancing the bidirectional sulfur *** study indicates that the simultaneous introduction of B-doped atoms and P vacancies in Ni2P causes the redistribution of electron around Ni atoms,bringing about the upward shift of d-band center of Ni atoms and effective d-p orbital hybridization between Ni atoms and sulfur species,thus strengthening the chemical anchoring for lithium polysulfides （LiPSs） as well as expediting the bidirectional conversion kinetics of sulfur ***,theoretical calculations reveal that the incorporation of B-doped atoms and P vacancies in Ni2P selectively promotes Li2S dissolution and nucleation ***,the Li-S batteries with Vp-B-Ni2P-separators present outstanding rate ability of 777 m A h g-1at 5 C and high areal capacity of 8.03 mA h cm-2under E/S of 5μL mg-1and sulfur loading of 7.20 mg *** work elucidates that introducing heteroatom and vacancy in metal phosphide collaboratively regulates the electron structure to accelerate bidirectional sulfur conversion.

关键词： Lithium sulfur batteries

Inspires effective alternatives to backpropagation:predictive coding helps understand and build learning

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Neural Regeneration Research 2025年第11期20卷 3215-3216页

作者： Zhenghua Xu Miao yu yuhang Song School of Health Sciences and Biomedical Engineering Hebei University of TechnologyTianjinChina Department of Computer Science University of OxfordOxfordUK

Artificial neural networks are capable of machine learning by simulating the hiera rchical structure of the human *** enable learning by brain and machine,it is essential to accurately identify and correct the prediction errors,referred to as credit assignment(Lillicrap et al.,2020).It is critical to develop artificial intelligence by understanding how the brain deals with credit assignment in neuroscience.

关键词： assignment learning enable

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浅谈四平地区中小河流雨量自动监测系统设计

气象水文海洋仪器 2013年第1期30卷 88-90页

作者：于洪强彭建军常宇峰陈晓波吉林省水文水资源局四平分局四平136000 长春气象仪器研究所长春130012 安徽省百制冷空调设备有限责任公司合肥230031

文章介绍了一个及时、准确、直观、功能齐全的雨量自动监测系统,该系统设94个遥测站和1个中心站。遥测数据由服务器实时收集后,经值守软件对数据进行解码、纠错和合理性检测,以SQL数据库的形式存储,系统能够实现雨量数据归总、查询、监... 详细信息

文章介绍了一个及时、准确、直观、功能齐全的雨量自动监测系统,该系统设94个遥测站和1个中心站。遥测数据由服务器实时收集后,经值守软件对数据进行解码、纠错和合理性检测,以SQL数据库的形式存储,系统能够实现雨量数据归总、查询、监测功能,节省了大量人力物力,为防汛抗旱提供更加优质的服务打下了坚实的基础。

关键词：雨量自动监测系统查询数据归总时效性