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A fast Stokes inversion technique based on quadratic regression

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Research in Astronomy and Astrophysics 2016年第5期16卷 7-16页

作者： fei Teng yuan-Yong Deng Key Laboratory of Solar Activity National Astronomical Observatories Chinese Academy of Sciences

Stokes inversion calculation is a key process in resolving polarization information on radiation from the Sun and obtaining the associated vector magnetic fields. Even in the cases of simple local thermo- dynamic equilibrium （LTE） and where the Milne-Eddington approximation is valid, the inversion problem may not be easy to solve. The initial values for the iterations are important in handling the case with mul- tiple minima. In this paper, we develop a fast inversion technique without iterations. The time taken for computation is only 1/100 the time that the iterative algorithm takes. In addition, it can provide available initial values even in cases with lower spectral resolutions. This strategy is useful for a filter-type Stokes spectrograph, such as SDO/HMI and the developed two-dimensional real-time spectrograph （2DS）.

关键词： Sun: magnetic fields -- methods: statistical -- methods: data analysis -- techniques: polari-metric

High-dimensional zinc porphyrin nanoframeworks as efficient radiosensitizers for cervical cancer

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Chinese Chemical Letters 2023年第7期34卷 182-185页

作者： fei Cai Kun ye Mingkai Chen yuan Tian Peicong Chen Hao Lin Tianfeng Chen Li Ma Department of Chemistry Jinan UniversityGuangzhou 510632China Department of Orthopedics Affiliated Hospital of Guangdong Medical UniversityZhanjiang 524001China

Radiotherapy is widely used clinically, but the toxic and side effects of nonselective killing of high-energy radiation limit its application. Finding biocompatible materials to assemble radiotherapy sensitizers and studying their sensitization patterns are of great significance for the clinical application. Here, biocompatible zinc porphyrin was chosen as sub-unit to construct various dimensional coordination frameworks. By employing top-down approach, suitable nanoframeworks with various dimensional zinc porphyrin were synthesized as radiosensitizers. The experimental data showed that high-dimensional zinc porphyrin nanoframeworks exhibit higher X-ray response performance.

关键词： Zinc porphyrin frameworks Nanoframeworks Radiosensitizer Apoptosis

The Heat and Mass Transfer Analysis of a Leaf

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Journal of Bionic Engineering 2013年第2期10卷 170-176页

作者： Hong ye Zhi yuan Shuanqin Zhang Department of Thermal Science andEnergy Engineering University of Science and Technology of China Hefei 230027 P. R. China The First Engineers Scientific Research Institute Wuxi 214035 P. R. China

Understanding the heat and mass transfer processes of plant leaves is essential for plant bionic engineering. A general thermophysical model was established for a plant leaf with particular emphasis on the transpiration process. The model was verified by the field measured stomatal resistance and temperature of a camphor leaf. A dynamical simulation revealed that diurnal transpiration water consumption is dominated by the solar irradiance and the day-average temperature of the leaf is dominated by the ambient air temperature; transpiration plays an important role in the cooling of the leaf, in average it could dissipate around 32.9% of the total solar energy absorbed by the leaf in summer. To imitate the thermal infared characteristic of the real leaf, the up surface of the bionic leaf must have emissivity and solar absorptivity close to those of a real leaf and its shape and surface roughness must be similar to those of the real leaf. The key point is that the bionic leaf must be able to evaporate water to simulate the transpiration of a plant leaf, appropriate adsorbent can be used to realize this function.

关键词： heat and mass transfer leaf temperature transpiration water consumption thermal infrared

Characteristics of Poisoning Cases Admitted to Outpatient and Emergency Department—China,2019

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China CDC weekly 2023年第47期5卷 1052-1057页

作者： Xiao Deng ye Jin yuan Wang Pengpeng ye yuan yuan Chengye Sun Leilei Duan National Institute for Occupational Health and Poison Control Chinese Center for Disease Control and PreventionBeijingChina National Center for Chronic and Noncommunicable Disease Control and Prevention Chinese Center for Disease Control and PreventionBeijingChina

Summary What is already known about this topic?Poisoning constitutes a significant cause of mortality among individuals aged 1 to 44 in ***,the epidemiological understanding of poisoning incidents within emergency dep... 详细信息

关键词： Poisoning mortality Cases

Distributed online mission planning for multi-player space pursuit and evasion

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Chinese Journal of Aeronautics 2016年第6期29卷 1709-1720页

作者： Liu yuan ye Dong Hao Yong College of Automation Harbin Engineering University Research Center of Satellite Technology Harbin Institute of Technology

There are three important roles in evasion conflict: pursuer, target and defender. Pursuers’ mission is to access targets; targets’ mission is to escape from pursuers’ capture; defenders’ mission is to intercept pursuers who are potentially dangerous to targets. In this paper, a distributed online mission plan(DOMP) algorithm for pursuers is proposed based on fuzzy evaluation and Nash equilibrium. First, an integrated effectiveness evaluation model is given. Then, the details of collaborative mission planning which includes the co-optimization of task distributing, trajectory and corresponding maneuvering scheme are presented. Finally, the convergence and steadiness of DOMP are discussed with simulation results. Compared with centralized mission planning, DOMP is more robust and can greatly improve the effectiveness of pursuing. It can be applied to dynamic scenario due to its distributed architecture.

关键词： Evaluation Nash equilibrium solution Pursuit-evasion strategy Planning Space

“Transient”or“Persistent”Coding for Working Memory

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Neuroscience Bulletin 2020年第10期36卷 1233-1235页

作者： Yixuan Ku Ti-fei yuan Guangdong Provincial Key Laboratory of Social Cognitive Neuroscience and Mental Health Department of PsychologySun Yat-sen UniversityGuangzhou 510006China Peng Cheng Laboratory Shenzhen 518040China Shanghai Key Laboratory of Psychotic Disorders Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghai 200030China Co-innovation Center of Neuroregeneration Nantong UniversityNantong 226001China

Working memory(WM)maintains information temporarily for subsequent goal-directed behaviors,such as remembering a telephone number to *** serves as a supporting mental workspace for many cognitive functions such as mental calculation,reading,and learning new *** critical role of persistent activity in the prefrontal cortex in WM,originally proposed to bridge sensory information and motor responses[1],has been severely debated recently[2,3].

关键词： telephone such tempo

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铁死亡与周围神经损伤的关系

中国组织工程研究 2025年第14期29卷 3020-3026页

作者：吕丽洁袁一鸣王艳裴飞黑龙江中医药大学黑龙江省哈尔滨市150006 黑龙江中医药大学附属二院康复医学科黑龙江省哈尔滨市150001

背景:研究已证实铁死亡与多种神经系统疾病的发生机制密切相关,但铁死亡和周围神经损伤后的病理生理机制有待进一步研究和阐明。目的:综述细胞铁死亡在治疗周围神经损伤进程中的相关作用与作用机制。方法:检索CNKI、PubMed等数据库建库... 详细信息

背景:研究已证实铁死亡与多种神经系统疾病的发生机制密切相关,但铁死亡和周围神经损伤后的病理生理机制有待进一步研究和阐明。目的:综述细胞铁死亡在治疗周围神经损伤进程中的相关作用与作用机制。方法:检索CNKI、PubMed等数据库建库至2024年5月期间铁死亡与周围神经系统损伤的相关文献,检索词为“ferroptosis,Peripheral nerve injury,Antioxidant defense system,Schwann cells,Macrophage,Neuroinflammation,Neuropathic pain”和“铁死亡,周围神经损伤,抗氧化防御系统,施万细胞,巨噬细胞,神经炎症,神经性疼痛”,最终纳入60篇文献进行分析。结果与结论:铁死亡的发生与细胞内铁代谢异常、活性氧积累及脂质过氧化密切相关。周围神经损伤后施万细胞和巨噬细胞均发生铁死亡,导致微环境变化,并且进一步诱导神经炎症及神经疼痛等疾病的发生。越来越多的研究表明神经损伤与铁死亡密切相关,抑制铁死亡可以促进周围神经损伤后的组织修复及功能恢复,因此,研究周围神经损伤细胞铁死亡的发生机制及调节有着重要意义。目前对铁死亡与周围神经损伤后的作用和调控研究仍处于起步阶段,需要进行更深入的研究,为促进周围神经损伤后修复提供更多的策略。

关键词：铁死亡周围神经损伤抗氧化防御系统施万细胞巨噬细胞神经炎症神经性疼痛

ANALYSIS ON A NUMERICAL SCHEME WITH SECOND-ORDER TIME ACCURACY FOR NONLINEAR DIFFUSION EQUATIONS

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Journal of Computational Mathematics 2021年第5期39卷 777-800页

作者： Xia Cui Guangwei yuan fei Zhao Laboratory of Computational Physics Institute of Applied Physics and Computational MathematicsP.O.Box 8009-26Beijing 100088China College of Science North China University of TechnologyBeijing 1OO144China Graduate School of China Academy of Engineering Physics Beijing 100088China

A nonlinear fully implicit finite difference scheme with second-order time evolution for nonlinear diffusion problem is *** scheme is constructed with two-layer coupled discretization(TLCD)at each time *** does not stir numerical oscillation,while permits large time step length,and produces more accurate numerical solutions than the other two well-known second-order time evolution nonlinear schemes,the Crank-Nicolson(CN)scheme and the backward difference formula second-order(BDF2)*** developing a new reasoning technique,we overcome the difficulties caused by the coupled nonlinear discrete diffusion operators at different time layers,and prove rigorously the TLCD scheme is uniquely solvable,unconditionally stable,and has second-order convergence in both s-pace and *** tests verify the theoretical results,and illustrate its superiority over the CN and BDF2 schemes.

关键词： Nonlinear diffusion problem Nonlinear two-layer coupled discrete scheme Second-order time accuracy Property analysis Unique existence Convergence

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