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Chinese Journal of Aeronautics 2025年第1期38卷 409-426页

作者： Leliang ReN Weilin GUO Yong XIAN Zhenyu liU Daqiao ZHANG Shaopeng li Xi’an Research Institute of High Technology Xi’an 710025China China Xi’an Satellite Control Center Xi’an710043China Department of Automation Tsinghua UniversityBeijing 100084China

exo-atmospheric vehicles are constrained by limited maneuverability,which leads to the contradiction between evasive maneuver and precision *** address the problem of Integrated evasion and Impact(IeI)decision under multi-constraint conditions,a hierarchical intelligent decision-making method based on Deep Reinforcement Learning(DRL)was ***,an intelligent decision-making framework of“DRL evasion decision”+“impact prediction guidance decision”was established:it takes the impact point deviation correction ability as the constraint and the maximum miss distance as the objective,and effectively solves the problem of poor decisionmaking effect caused by the large IeI decision ***,to solve the sparse reward problem faced by evasion decision-making,a hierarchical decision-making method consisting of maneuver timing decision and maneuver duration decision was proposed,and the corresponding markov Decision Process(mDP)was designed.A detailed simulation experiment was designed to analyze the advantages and computational complexity of the proposed *** results show that the proposed model has good performance and low computational resource *** minimum miss distance is 21.3 m under the condition of guaranteeing the impact point accuracy,and the single decision-making time is 4.086 ms on an STm32F407 single-chip microcomputer,which has engineering application value.

关键词： exo-atmospheric vehicle Integrated evasion and impact Deep reinforcement learning Hierarchical intelligent policy Single-chip microcomputer miss distance

Boosting bidirectional sulfur conversion enabled by introducing boron-doped atoms and phosphorus vacancies in Ni_(2)P 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 TechnologyBeijing 100081China Beijing Key Laboratory of Chemical Power Source and Green Catalysis School of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081China

lithium-sulfur (li-S) batteries have gained great attention due to the high theoretical energy density and low cost,yet their further com.ercialization has been obstructed by the notorious shuttle effect and sluggish redox ***,we supply a strategy to optimize the electron structure of Ni_(2)P by concurrently introducing B-doped atoms and P vacancies in Ni_(2)P (Vp-B-Ni_(2)P),thereby enhancing the bidirectional sulfur *** study indicates that the simultaneous introduction of B-doped atoms and P vacancies in Ni_(2)P 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 Ni_(2)P selectively promotes li2S dissolution and nucleation ***,the li-S batteries with Vp-B-Ni_(2)P-separators present outstanding rate ability of 777 m A h g^(-1)at 5 C and high areal capacity of 8.03 mA h cm^(-2)under e/S of 5μL mg^(-1)and sulfur loading of 7.20 mg cm^(-2).This work elucidates that introducing heteroatom and vacancy in metal phosphide collaboratively regulates the electron structure to accelerate bidirectional sulfur conversion.

关键词： B-doped atoms P vacancies Nickel phosphide Bidirectional sulfur conversion lithium-sulfur batteries

An efficient and accurate numerical method for simulating close-range blast loads of cylindrical charges based on neural network

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Defence Technology(防务技术) 2025年第2期44卷 257-271页

作者： Ting liu Changhai Chen Han li Yaowen Yu Yuansheng Cheng School of Naval Architecture and Ocean engineering Huazhong University of Science and TechnologyWuhan 430074China Hubei Key Laboratory of Naval Architecture and Ocean engineering Hydrodynamics Wuhan 430074China Collaborative Innovation Center for Advanced Ship and Deep-Sea exploration Shanghai 200240China

To address the problems of low accuracy by the CONWeP model and poor efficiency by the Coupled eulerian-Lagrangian(CeL)method in predicting close-range air blast loads of cylindrical charges,a neural network-based simulation(NNS)method with higher accuracy and better efficiency was *** NNS method consisted of three main ***,the parameters of blast loads,including the peak pressures and impulses of cylindrical charges with different aspect ratios(L/D)at different stand-off distances and incident angles were obtained by two-dimensional numerical ***,incident shape factors of cylindrical charges with arbitrary aspect ratios were predicted by a neural ***,reflected shape factors were derived and implemented into the subroutine of the ABAQUS code to modify the CONWeP model,including modifications of impulse and *** reliability of the proposed NNS method was verified by related experimental *** accuracy improvement was acquired by the proposed NNS method compared with the unmodified CONWeP ***,huge efficiency superiority was obtained by the proposed NNS method compared with the CeL *** proposed NNS method showed good accuracy when the scaled distance was greater than 0.2 m/kg^(1/3).It should be noted that there is no need to generate a new dataset again since the blast loads satisfy the similarity law,and the proposed NNS method can be directly used to simulate the blast loads generated by different cylindrical *** proposed NNS method with high efficiency and accuracy can be used as an effective method to analyze the dynamic response of structures under blast loads,and it has significant application prospects in designing protective structures.

关键词： Close-range air blast load Cylindrical charge Numerical method Neural network CeL method CONWeP model

Decellularized amniotic membrane promotes the anti-inflammatory response of macrophages via PI3K/AKT/HIF-1α pathway

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Chinese Chemical Letters 2025年第1期36卷 403-407页

作者： Xiongbo Song Jinwen Xiao Juan Wu li Sun Long Chen Department of Orthopedics Guizhou Provincial People’s HospitalGuiyang 550000China The Lab of Tissue engineering and Translational medicine College of MedicineGuizhou UniversityGuiyang 550000China Wuhan Kangchuang Biotechnology Wuhan 430074China

macrophages undergo dynamic transitions between m1 and m2 states,exerting profound influences on both inflammatory and regenerative *** biocompatible and wound-healing properties of decellularized amniotic membrane(d Am)make it a subject of exploration for its potential impact on the anti-inflammatory response of *** findings unequivocally demonstrate that d Am promotes anti-inflammatory m2 polarization of macrophage,with its cytokine-rich content posited as a potential *** application of RNA sequencing unveils differential gene expression,implicating the hypoxia inducible factor-1α(HIF-1α)signaling pathway in this intricate *** investigation further demonstrates that d Am facilitates anti-inflammatory m2 polarization of macrophage through the upregulation of epidermal growth factor(eGF),which,in turn,activates the phosphatidylinositol 3-kinase(PI3K)/protein kinase B(AKT)pathway and stabilizes HIF-1α.This cascade results in a noteworthy augmentation of anti-inflammatory gene *** study significantly contributes to advancing our comprehension of d Am's immunomodulatory role in tissue repair,thereby suggesting promising therapeutic potential.

关键词： macrophage Decellularized amniotic membrane Anti-inflammatory response Hypoxia inducible factor-1α epidermal growth factor

Optimizing non-invasive vagus nerve stimulation for treatment in stroke

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Neural Regeneration Research 2025年第12期20卷 3388-3399页

作者： Sheharyar S.Baig Samantha Dorney mudasar Aziz Simon m.Bell Ali N.Ali li Su Jessica N.Redgrave Arshad majid Sheffield Institute for Translational Neuroscience Department of NeuroscienceUniversity of SheffieldSheffieldUK Doncaster and Bassetlaw Teaching Hospitals NHS Foundation Trust DoncasterUK

Stroke remains a leading cause of long-term disability *** is an unmet need for neuromodulatory therapies that can mitigate against neurovascular injury and potentially promote neurological *** vagus nerve stimulation has been demonstrated to show potential therapeutic effects in both acute and chronic ***,previously published research has only investigated a narrow range of stimulation settings and *** this review,we detail the ongoing studies of transcutaneous vagus nerve stimulation in stroke through systematic searches of registered clinical *** summarize the upcoming clinical trials of transcutaneous vagus nerve stimulation in stroke,highlighting their indications,parameter settings,scope,and *** further explore the challenges and barriers associated with the implementation of transcutaneous vagus nerve stimulation in acute stroke and stroke rehabilitation,focusing on critical aspects such as stimulation settings,target groups,biomarkers,and integration with rehabilitation interventions.

关键词： neuromodulation neuroplasticity rehabilitation stroke vagal nerve stimulation vagus nerve stimulation

[Analysis of clinical and novel gene mutations with X-linked Charcot-marie-tooth disease type 1]

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Zhonghua yi xue za zhi 2025年第7期105卷 554-558页

作者： G li L Wang J Fu m Pang J Song m m ma J W Zhang Department of Neurology Henan Provincial People's Hospital People's Hospital of Zhengzhou University Zhengzhou 450003 China. Department of Neurology Children's Hospital Affiliated to Zhengzhou University Henan Children's Hospital Zhengzhou Children's Hospital Zhengzhou 450053 China. Department of Neurology Henan Provincial People's Hospital People's Hospital of Zhengzhou University Department of Neurological Diseases Fuwai Central China Cardiovascular Hospital Zhengzhou 450003 China.

In 14 patients from 10 families with X-linked charcot-marie-tooth disease type 1 (CmTX1) who were admitted to the hospital between Decem.er 2018 and April 2024, 11 presented with weakness and atrophy of distal extremities or both feet without superficial sensory impairment, and 3 children presented with paraphylastic limb numbness and weakness, slurred speech, and intracranial lesions shown by head mRI. In 10 cases, the motor sensory nerve was dem.elinated with axonal damage in the limbs, and 1 child patient had no obvious abnormality and the sensory nerve damage was more serious than the motor nerve. Statistical analysis of 10 patients' neurophysiology showed that CmTX1 had more severe sensory nerve damage than motor nerves, more severe motor and sensory nerve damage in the lower limbs than in the upper limbs, and more severe sural nerve damage than in the upper limbs. GJB1 gene variation was found in 10 families, among which c.176G > C (p.G59A), c.350T > C (p.L117P) and c.386G > A (p.G129e) were newly reported mutations. CmTX1 may present as peripheral neuropathy and/or episodic central nervous system dysfunction. There are several new mutations in CmTX1 in China.

关键词：夏科-马里-图斯病 GJB1基因中枢神经系统神经电生理突变病例系列研究

A nanocomposite film with layer-by-layer self-assembled gold nanospheres driven by cucurbit[7]uril for the selective transport of l-tryptophan and lysozyme

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Chinese Chemical Letters 2025年第1期36卷 258-261页

作者： Hao Zhang Haonan Qu ehsan Bahojb Noruzi Haibing li Feng liang The State Key Laboratory of Refractories and metallurgy School of Chemistry and Chemical EngineeringWuhan University of Science and TechnologyWuhan 430081China National Key Laboratory of Green Pesticide College of ChemistryCentral China Normal UniversityWuhan 430079China School of environmental and Chemical engineering Jiangsu Ocean UniversityLianyungang 222005China

Selective separation of amino acids and proteins is crucial in various areas of research,including proteomics,protein structure and function studies,protein purification and drug development,and biosensing and biodetection.A nanocomposite film is formed by combining layer-by-layer self-assembled gold nanospheres(Au NPs)driven by cucurbit[7]uril(CB[7])and polymethyl methacrylate(PmmA)*** to the host-guest interactions,the selective transmission of l-tryptophan in the nanocomposite film is confirmed by the current-voltage measurements using a ***,by adjusting the particle size of Au NPs to increase channel size,lysozyme containing multiple tryptophan residues can selectively pass through the nanocomposite film,indicating the high versatility and adaptability of the nanocomposite *** study will provide a new direction for the selective separation of amino acids and proteins.

关键词： Nanocomposite film Cucurbituril Gold nanospheres Host-guest interactions Selective transmission

multiphase reaction spinning of high-tem.erature resistant weavable SiO_(2)-Kevlar hybrid aerogel fibers

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Nano Research 2025年第1期18卷 424-433页

作者： Yunna Chen Wenlu Zhang Qingyang li Wenbin li Chong He School of Textile Science and engineering Wuhan Textile UniversityWuhan 430200China State Key Laboratory of New Textile materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200China

Advanced aerogel fibers possess numerousadvantages amalgamating the attributes of aerogels and fibermaterials, rendering them invaluable in the realm of thermalmanagement and regulation. However, the achievement ofrobust mechanical properties and increased tem.eraturestability is still a major challenge for the majority of aerogelfibers. Herein, SiO_(2)-Kevlar hybrid aerogel fibers with bioniccore-shell structure were prepared by reaction spinning andweaved into fabric. Kevlar nanowires dispersion is pum.edinto a bath comprising a self-synthesized silica sol, whichfacilitates the hybridization of biphasic aerogels through thegel reaction. Precise control over the diameter (200-800 μm)and structure of the wet gel fibers was achieved throughmeticulous adjustment of the spinning solution composition and spinning parameters. Subsequent freeze-drying processfacilitates the formation of a core-shell hybrid structure, in which the SiO_(2) aerogel layer effectively encapsulate the Kevlaraerogel core fiber. Taking full advantage of the mechanical properties of the Kevlar core fiber, the resulting SiO_(2)-Kevlaraerogel fibers exhibit com.endable weaving characteristics (51.8 mPa). Furthermore, SiO_(2)-Kevlar aerogel fabrics exhibitenhanced thermal insulation characteristics with a thermal conductivity of 0.037 W/(m·K). As a result of the presence ofexternal SiO_(2) aerogel layer, the overall tem.erature resistance performance of the SiO_(2)-Kevlar fabric reach up to 700 ℃.

关键词： aerogel fibers SiO_(2)aerogel Kevlar aerogel reaction spinning thermal protective performance

On the existence of solutions for prescribing fractional Q-curvature problem on S~n

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Acta mathematica Sinica,english Series 2025年

作者： Yan li Zhongwei TANG College of Science China University of Petroleum(Beijing) School of mathematical Sciences Laboratory of Mathematics and Complex Systems MOEBeijing Normal University

The aim of this paper is to investigate the existence of solutions to the prescribing fractional Q-curvature problem on S~n under some reasonable assumption of the Laplacian sign at the critical point of prescribing curvature function K. Due to the lack of compactness, we choose to return to the basic elements of variational theory and study the deformation along the flow lines. The novelty of the paper is that we obtain the existence without assuming any sym.etry and periodicity on K. In addition,to overcome the loss of compactness for high-order operator problem, we need more delicate estimates with the second order cases.

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Study on mode-filtered light sensor for methane detection

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Chinese Chemical Letters 2009年第2期20卷 210-212页

作者： Suo Zhu Wu Shao min Shuang Yan Zhang Zhong Ping li martin m.e Choi Cai Hong Zhang Chuan Dong Research Center of environmental Science and engineering School of Chemistry and Chemical Engineering Shanxi University Taiyuan 030006 China Department of Chemistry Hong Kong Baptist University Kowloon Tong Hong Kong SAR China

A novel mode-filtered light gas sensor has been reported. It was constructed by inserting an optical fiber deposited by a thin silicone cladding of cryptophane A into a fused-silica capillary. When different concentration of methane gas was introduced to the sensor, the phenomenon that mode-filtered light intensity decreased with the increasing concentration of methane was observed. And a linear relationship was obtained within the methane concentration range of 0.0-16.0% （v/v）. The detection limit was 0.06% （v/v）. The mode-filtered light sensor has been exploited to respond to various concentrations of methane gas at room tem.erature.

关键词： mode-filtered light methane Cryptophane A