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Material basis and sleep-improving mechanisms of Lily-Ziziphi spinosae semen Decoction：Systematic evidence from LC-MS， network pharmacology and animal experiments

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Food Science and Human Wellness 2025年

作者： Fan Jia Hui Zheng Yao Xu Jiani Jiang Yuhang Wu Jianxin Liu kai he Yong Yang School of Pharmacy， Hunan University of Chinese Medicine School of Pharmaceutical Science， Hunan University of Medicine

Lily-Ziziphi spinosae semen Decoction (LZ) is known for its blood nourishing， mind calming， body sedation， and sleep promoting effects in traditional Chinese medicine. However， its material basis and underlying mechanisms have not yet been clearly defined. This study applies liquid chromatography-mass spectrometry， network pharmacology， and animal studies to reveal the material basis and sleep-improving mechanisms of LZ. The mixed decoction (LZ-ME) and single decoction (LZ-SE) were prepared to study their chemical components. Network pharmacology was used to predict the sleep-improving targets and signaling pathways of LZ. ICR mice were intragastrically administered saline (NC)， melatonin (positive control group， 0.50 mg/kg)， low (12.90 g/kg)， medium (25.70 g/kg)， and high (38.60 g/kg) dose of LZ-ME and LZ-SH for 30 days.. The results showed that LZ-ME could prolong the sleep duration and shorten the sleep latency in sodium barbiturate induced mice model. The results of chemical composition showed that total polysaccharides， total flavonoids， total saponins， and total alkaloids in LZ-ME were significantly higher than those in LZ-SE (177.20%， 82.34%， 30.58%， and 11.66%， respectively). A total of 58 chemical components were identified by UPLC-QTOF-MS， and eight representative difference components of LZ-ME and LZ-SE were found. LZ-ME significantly increased tumor necrosis factor (TNF-α) in mice serum and neurotransmitter γ-aminobutyric acid (GABA) levels in mice hippocampus， decreased dopamine (DA) and glutamate (Glu) levels in mice hippocampus (P hermore， LZ-ME up-regulated the abundance of the beneficial bacteria Lactobacillus and Eubacterium＿R， down-regulated the abundance of the harmful bacteria Lachnospiraceae et al. The polysaccharides， flavonoids (spinosin and 6?-feruloylspinosin) and saponins (jujuboside A and jujuboside B) were the main material bases for the sleep-promoting effects of LZ. These compounds may directly enhance levels of the GABA，

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基于四步反应模型的石墨氧化腐蚀研究

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核动力工程 2025年第1期46卷 169-174页

作者：申腾王城喻郭少强贺楷中国核电工程有限公司北京100084 西安交通大学核科学与核技术学院西安710049 上海交通大学机械与动力工程学院上海200240

为了建立气冷微堆堆芯石墨与氧气的腐蚀反应分析方法,本文基于Arrhenius反应式建立石墨氧化腐蚀的四步反应模型。模型的四步反应分别代表石墨与氧气在反应过程中可能发生的4种化学反应,并增加了反应活性面积以模拟失重率对腐蚀速率的影... 详细信息

为了建立气冷微堆堆芯石墨与氧气的腐蚀反应分析方法,本文基于Arrhenius反应式建立石墨氧化腐蚀的四步反应模型。模型的四步反应分别代表石墨与氧气在反应过程中可能发生的4种化学反应,并增加了反应活性面积以模拟失重率对腐蚀速率的影响。通过开展基于气体浓度法的石墨氧化腐蚀实验,得到500~1100℃下不同流量和不同氧气浓度的石墨氧化腐蚀速率,实验数据分别用于腐蚀参数拟合和模型验证。建模及验证分析结果表明,所拟合的四步反应模型能够适用于石墨氧化腐蚀速率的计算分析并能够区分反应产物,且模型反应活性面积的增加更有利于准确预测高失重下的氧化腐蚀速率。

关键词：石墨氧化活化能实验反应模型

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In situ transmission electron microscopy and artificial intelligence enabled data analytics for energy materials

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Journal of Energy Chemistry 2022年第5期31卷 454-493页

作者： Hongkui Zheng Xiner Lu kai he Department of Materials Science and Engineering Clemson UniversityClemson 29634USA

Energy materials are vital to energy conversion and storage devices that make renewable resources viable for electrification technologies. In situ transmission electron microscopy(TEM) is a powerful approach to characterize the dynamic evolution of material structure, morphology, and chemistry at the atomic scale in real time and in operando. In this review, recent advancements of in situ TEM techniques for studying energy materials, including catalysts, batteries, photovoltaics, and thermoelectrics, are systematically discussed and summarized. The topics include a broad range of material transformations that are in situ stimulated by heating, biasing, lighting, electron-beam illuminating, and cryocooling under vacuum, liquid, or gas environments within TEM, as well as the mechanistic understanding of the associated solid-solid, solid-liquid, and solid-gas reactions elucidated by in situ TEM examination and operando measurements. Special focus is also put on the emerging progress of artificial intelligence enabled microscopy data analytics, including machine learning enhanced tools for retrieving useful information from massive TEM imaging, diffraction, and spectroscopy datasets, highlighting its merits and potential for automated in situ TEM experimentation and analysis. Finally, the pressing challenges and future perspectives on in situ TEM study for energy-related materials are discussed.

关键词： In situ TEM Cryo-TEM Energy materials Batteries Catalysts Photovoltaic Thermoelectric Artificial intelligence Machine learning

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Time-Averaged Behaviour at the Critical Parameter Point of Transition to Spatiotemporal Chaos

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Chinese Physics Letters 2001年第9期18卷 1176-1178页

作者： he kai-Fen The Key Laboratory of Beam Technology and Material Modification of Ministry of Education and Institute of Low Energy Nuclear PhysicsBeijing Normal UniversityBeijing 100875 Beijing Radiation Center Beijing 100875

A time-averaged behaviour is found to be important for investigating the critical behaviour in parameter space for the transition from temporal chaos to spatiotemporal chaos by using an energy representation. Considering any wave solution as a superposition of the steady wave with its perturbation wave, we find that when approaching the critical parameter point the averaged positive interaction energy for the k = 1 mode becomes competitive with the negative one, with the summation displaying a scaling behaviour of power law.

关键词： behaviour chaos averaged

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Systematic error real-time registration based onmodified input estimation

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Journal of Systems Engineering and Electronics 2016年第5期27卷 986-992页

作者： jianjuan xiu kai dong you he Research Institute of Information Fusion Naval Aeronautical and Astronautical University Yantai 264001 China

In order to estimate the systematic error in the processof maneuvering target adaptive tracking, a new method is *** proposed method is a linear tracking scheme basedon a modified input estimation approach. A special augmentationin the state space model is considered, in which both the systematicerror and the unknown input vector are attached to thestate vector. Then, an augmented state model and a measurementmodel are established in the case of systematic error, andthe corresponding filter formulas are also given. In the proposedscheme, the original state, the acceleration and the systematicerror vector can be estimated simultaneously. This method can notonly solve the maneuvering target adaptive tracking problem in thecase of systematic error, but also give the system error value inreal time. Simulation results show that the proposed tracking algorithmoperates in both the non-maneuvering and the maneuveringmodes, and the original state, the acceleration and the systematicerror vector can be estimated simultaneously.

关键词： systematic error estimation maneuvering target,adaptive tracking augmented system model modified input estimationapproach.

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One Dimensional Stochastic Differential Equations with Distributional Drifts

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Acta Mathematicae Applicatae Sinica 2007年第3期23卷 501-512页

作者： kai he Xi-cheng Zhang Institute of Applied Mathematics Academy of Mathematics and SystemSciences Chinese Academy of Sciences Beijing 100080 China Department of Mathematics Huazhong University of Science and Technology Wuhan 430074 China

In this paper we study the existence, pathwise uniqueness and homeomorphism flow of strong solutions to a class of one dimensional SDEs driven by infinitely many Brownian motions, and with Yamada- Watanabe diffusion c... 详细信息

关键词： Strong solution Stochastic homeomorphism flows Dirichlet process Distributional drift

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ACS-HCA:An Access Control Scheme Under Hierarchical Cryptography Architecture

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Chinese Journal of Electronics 2019年第1期28卷 52-61页

作者： SHI Jiaoli HUANG Chuanhe he kai SheN Xieyang State Key Lab of Software Engineering Computer SchoolWuhan University Collaborative Innovation Center of Geospatial Technology Jiujiang University Wuhan Textile University

Binding access policies to data,Ciphertext-policy attribute-based encryption(CP-ABE)enables data access control to be independent from a certain application and lets users face data directly. It is regarded as one of the most suitable access control methods in cloud storage system and gets the attention of extensive researches. In those researches, Hierarchical cryptography architecture(HCA) is often applied to improve the efficiency of the system. There exist two open issues: illegal leakage of symmetric keys and low efficiency of revocation of an attribute of a user. We propose an Access control scheme under Hierarchical cryptography architecture(ACS-HCA). In this scheme,key derivation mechanism and forward derivation function are used to avoid the leakage of symmetric keys, All-orNothing transform is used to prevent the illegal reuse of symmetric keys, and attribute revocation is realized without re-issuing other users’ private keys. Analyses and simulations demonstrate that our scheme sustains less encrypting cost on each owner and less decrypting cost on each user, but gain high efficiency in revocation of an attribute of a user.

关键词： Cloud storage Access control Ciphertext-policy attribute-based encryption Hierarchical cryptography architecture Attribute revocation

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Revisited dynamic modeling and eigenvalue analysis of the cable-stayed beam

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Acta Mechanica Sinica 2020年第4期36卷 950-963页

作者： Lianhua Wang Xiaoyu Zhang kai he Jian Peng College of Civil Engineering Hunan UniversityChangsha 410082China Key Laboratory for Wind and Bridge Engineering of Hunan Province Hunan UniversityChangsha 410082China Guangxi Communications Design Group Co. LtdNanning 530022China Hunan Provincial Key Laboratory of Structures for Wind Resistance and Vibration Control Hunan University of Science and TechnologyXiangtan 411201China

In this study,the Hamilton’s principle is applied to revisit the dynamic modeling of the cable-stayed beam,and the motion equations governing the nonlinear response of the cable-stayed beam are *** corresponding boundary terms are transformed to the dynamic equilibrium conditions through the continuity of the displacement at the anchoring *** the standard condensation procedure,the condensed model of the cable-stayed beam is *** eigenvalue analysis is performed to determine the closed-form eigenvalue solution of the linear problems,and two types of eigenvalue solution are *** is shown that the frequency spectrum of the cable-stayed beam exhibits the curve veering and crossover *** to these phenomena,the mode shapes of the cable-stayed beam may exhibit the coupling ***,the discrete model of the cable-stayed beam is determined,and the possible nonlinear interactions are discussed.

关键词： Cable-stayed beam Dynamic modeling Natural frequencies Mode shapes Curve veering

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BAK1 Directly Regulates Brassinosteroid Perception and BRI1 Activation

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Journal of Integrative Plant Biology 2013年第12期55卷 1264-1270页

作者： kai he Shengbao Xu Jia Li Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations School of Life SciencesLanzhou University

Plants utilize plasma membrane-localized receptor-like kinases （RLKs） to sense extracellular signals to coordinate growth, development, and innate immune responses. BAK1 regulates multiple signaling pathways acting as a co-receptor of several distinct ligand-binding RLKs. It has been debated whether BAK1 serves as an essential regulatory component or only a signal amplifier without pathway specificity. This issue has been clarified recently. Genetic and structural analyses indicated that BAK1 and its homologs play indispensible roles in mediating brassinosteroid （BR） signaling pathway by directly perceiving the ligand BR and activating the receptor of BR, BRII. The mechanism revealed by these studies now serves as a paradigm for how a pair of RLKs can function together in ligand binding and subsequent initiation of signaling.

关键词： Arabidopsis BAK1 brassinosteroid BRI1 co-receptor extracellular domain leucine-rich repeat receptor receptor-like kinase.

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Hf_(2)CF_(2)单层热传输及热电性质的第一原理研究

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原子与分子物理学报 2025年第4期42卷 168-176页

作者：董文欣李铁平张莉丁迎春何开华中国地质大学(武汉)数学与物理学院武汉430074 宜宾学院材料与化学工程学部宜宾644000

二维MXene材料是一种新型的功能性材料,其在热电领域具有潜在应用价值.本文采用第一性原理计算方法,通过求解声子和电子的玻尔兹曼输运方程,计算研究了MXene Hf_(2)CF_(2)单层的热传输特征和热电性质.声子谱揭示了Hf_(2)CF_(2)单层具有... 详细信息

二维MXene材料是一种新型的功能性材料,其在热电领域具有潜在应用价值.本文采用第一性原理计算方法,通过求解声子和电子的玻尔兹曼输运方程,计算研究了MXene Hf_(2)CF_(2)单层的热传输特征和热电性质.声子谱揭示了Hf_(2)CF_(2)单层具有热力学稳定性.在室温条件下,Hf_(2)CF_(2)单层的晶格热导率为14.25 Wm^(-1)K^(-1),且随着温度的升高而降低;电子热导率却随着温度和掺杂浓度的增加而升高.电输运性质中,电导率和Seebeck系数随载流子浓度的变化相反,确保能够获得优异的热电性能.在600 K条件下,n型MXene Hf_(2)CF_(2)单层的最大功率因子可以达到61.24 mW/(mK^(2)).载流子迁移率具有较高的各向异性,且电子的迁移率远远高于空穴的迁移率.基于热导及电导计算结果,n型MXene Hf_(2)CF_(2)单层沿x轴方向的热电优值可达到1.75,高于其他已报道的类似结构的热电优值,表明了MXene Hf_(2)CF_(2)单层是一种潜在的高性能n型热电材料.

关键词： MXene Hf_(2)CF_(2) 热电性能晶格热导率第一性原理

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