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Gut microbiota-astrocyte axis: new insights into age-related cognitive decline

Neural Regeneration Research 2025年第4期20卷 990-1008页

作者： Lan Zhang Jingge Wei Xilei Liu Dai Li Xiaoqi pang Fanglian Chen Hailong Cao Ping Lei Haihe Laboratory of Cell Ecosystem Department of GeriatricsTianjin Medical University General HospitalTianjinChina Tianjin Geriatrics Institute Tianjin Medical University General HospitalTianjinChina Department of Gastroenterology and Hepatology Tianjin Medical University General HospitalNational Key Clinical SpecialtyTianjin Institute of Digestive DiseasesTianjin Key Laboratory of Digestive DiseasesTianjinChina Department of Urology Tianjin Medical University General HospitalTianjinChina Tianjin Neurological Institution Tianjin Medical University General HospitalTianjinChina

With the rapidly aging human population,age-related cognitive decline and dementia are becoming increasingly prevalent *** is considered the main risk factor for cognitive decline and acts through alterations in the composition of the gut microbiota,microbial metabolites,and the functions of *** microbiota–gut–brain axis has been the focus of multiple studies and is closely associated with cognitive *** article provides a comprehensive review of the specific changes that occur in the composition of the gut microbiota and microbial metabolites in older individuals and discusses how the aging of astrocytes and reactive astrocytosis are closely related to age-related cognitive decline and neurodegenerative *** article also summarizes the gut microbiota components that affect astrocyte function,mainly through the vagus nerve,immune responses,circadian rhythms,and microbial ***,this article summarizes the mechanism by which the gut microbiota–astrocyte axis plays a role in Alzheimer’s and Parkinson’s *** findings have revealed the critical role of the microbiota–astrocyte axis in age-related cognitive decline,aiding in a deeper understanding of potential gut microbiome-based adjuvant therapy strategies for this condition.

关键词： age aging Alzheimer’s disease astrocytes cognitive decline dementia gut microbiota gut–brain axis microbial metabolites neuroinflammation Parkinson’s disease

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Recurrent Neural Networks for Computing the Moore-Penrose Inverse with Momentum Learning

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Chinese Journal of Electronics 2020年第6期29卷 1039-1045页

作者： ZHANG Naimin ZHANG ting Department of Mathematics Wenzhou University

We are concerned with a kind of iterative method for computing the Moore-Penrose inverse,which can be considered as a discrete-time form of recurrent neural *** study the momentum learning scheme of the method and discuss its semi-convergence when computing the Moore-Penrose inverse of a rankdeficient *** prove the semi-convergence for our new acceleration algorithm and obtain the optimal momentum factor which makes the fastest *** tests demonstrate the effectiveness of our new acceleration algorithm.

关键词： Moore-Penrose inverse Optimisation techniques recurrent neural nets iterative method neural nets momentum learning scheme gradient methods convergence of numerical methods discrete-time form matrix algebra Numerical approximation and analysis semiconvergence convergence recurrent neural networks Interpolation and function approximation (numerical analysis) Discrete control systems iterative methods optimal momentum factor Neural computing techniques backpropagation learning (artificial intelligence) discrete time systems Knowledge engineering techniques

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SURFACE AND INTERFACIAL GRAVITY WAVES INDUCED BY AN IMPULSIVE DISTURBANCE IN A TWO-LAYER INVISCID FLUID

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Journal of Hydrodynamics 2009年第1期21卷 26-33页

作者： LU Dong-qiang CHEN ting-ting Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai 200072 China

The transient gravity waves due to an impulsive source in a two-layer fluid system are investigated analytically. The fluid is assumed to be inviscid and incompressible. The density of each of the two layers is constant. Five different boundary conditions are considered. The depth of each of the two layers is infinite or finite. The upper fluid of finite depth is covered by a rigid lid or a free surface. Based on the assumption of small-amplitude waves, a linear system is established. The integral solutions for the free-surface and interfacial waves are obtained by means of the Fourier-Laplace transform. The corresponding asymptotic representations are derived for large time with a fixed distance-to-time ratio by the Stokes and Scorer methods of stationary phase. The analytical solutions show that there are two different modes, namely the free-surface and interracial wave modes. The wave profiles observed depend on the relation between the distance-to-time ratio and the maximal group velocities and on the limiting values of the second derivatives of the frequencies as well.

关键词： impulsive disturbances imerfacial waves free surface waves stationary-phase methods

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Design and analysis of dual mixed refrigerant processes for high-ethane content natural gas liquefaction

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Chinese Journal of Chemical Engineering 2021年第1期34卷 354-364页

作者： ting He Wensheng Lin Institute of Refrigeration and Cryogenics Shanghai Jiao Tong UniversityShanghai 200240China

Recovery and purification of ethane has a significant impact on economic benefit improvement of the high-ethane content natural ***,current LNG-NGL integrated processes mainly focus on conventional natural gas,which are not applicable to natural gas with high ethane *** fill this gap,three dual mixed refrigerant processes are proposed for simulation study of high-ethane content natural gas *** proposed processes are optimized by a combination method of sequence optimization and genetic *** analysis is conducted to evaluate the three processes from the energetic and exergetic points of *** results show that the power consumption of Process 3 which compressing natural gas after distillation is the *** safety or other considerations,some common compositions of the mixed refrigerant may need to be removed under certain *** this,case studies of mixed refrigerant involving six composition combinations are carried out to investigate the effects of refrigerant selection on the process performance.

关键词： Natural gas liquefaction Ethane Dual mixed refrigerant cycle Cryogenic distillation Refrigerant selection

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Robust H2/H∞ Fuzzy Filtering for Nonlinear Stochastic Systems with Infinite Markov Jump

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Journal of Systems Science & Complexity 2020年第4期33卷 1023-1039页

作者： LIU Yueying HOU ting College of Mathematics and Systems Science Shandong University of Science and TechnologyQingdao 266590China School of Mathematics and Statistics Shandong Normal UniversityJinan 250358China

Robust fuzzy filterings for a class of nonlinear stochastic systems with infinite Markov jump are explored based on T-S fuzzy model approach in this paper. First of all, the exponentially mean square stable filter with a prescribed H∞ performance is designed via linear matrix inequalities(LMIs). Secondly, H2/H∞ fuzzy filtering is solved in terms of LMIs by minimizing the estimation error energy under the worst case fuzzy disturbance. The corresponding fuzzy filter parameters can be received by convex optimization algorithms. And lastly, two illustrative examples are performed to manifest the validity of the proposed methods.

关键词： H2/H∞ filtering Markov

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Classical Information Capacities of Some Single Qubit Quantum Noisy Channels

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Communications in Theoretical Physics 2003年第5期39卷 537-542页

作者： LINGXian-ting DepartmentofPhysicsandInstituteofMathematics HuaihuaCollegeHuaihua418008China DepartmentofMaterialScienceandEngineering UniversityofScienceandTechnologyofChinaHefei230026China

By using the Holevo-Schumacher-Westmoreland theorem and through solving eigenvalues of states out from the quantum noisy channels directly, or with the help of the Bloch sphere representation, or Stokes parametrizatio... 详细信息

关键词：量子噪声通道 HSW定理传统信息容量量子传输量子通信特征值数值计算

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Weakly k-hyponormal and polynomially hyponormal commuting operator pairs

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Science China Mathematics 2015年第2期58卷 405-422页

作者： DUAN Yong Jiang QI ting ting School of Mathematics and Statistics Northeast Normal University

We introduce the notion of weak k-hyponormality and polynomial hyponormality for commuting operator pairs on a Hilbert space and investigate their relationship with k-hyponormality and *** provide examples of 2-variable weighted shifts which are weakly 1-hyponormal but not *** relating the weak k-hyponormality and k-hyponormality of a commuting operator pair to positivity of restriction of some linear functionals to corresponding cones of functions,we prove that there is an operator pair that is polynomially hyponormal but not 2-hyponormal,generalizing Curto and Putinar’s result(1991,1993)to the two-variable case.

关键词： weakly k-hyponormal k-hyponormal polynomially hyponormal subnormal commuting operator pair

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Debiased conversion measurements based target tracking with direction cosine measurements

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Journal of Systems Engineering and Electronics 2022年第6期33卷 1140-1150页

作者： LI Lifu CHENG ting School of Information and Communication Engineering University of Electronic Science and Technology of ChinaChengdu 611731China

Phased array radar’s measurements include two direction cosine and range measurements,which can be obtained in the direction cosine *** equation of the target is nonlinear with the measurements and in order to solve the nonlinear problem,debiased conversion measurements based target tracking with direction cosine and range measurements in direction cosine coordinates named DCMKFPreDcos is proposed first in this paper,where the predicted information is introduced to calculate the converted measurement errors’statistical characteristics to eliminate the correlation between measurement noise and the converted measurement errors *** range rate information can be obtained further,based on the above DCMKF-PreDcos’filtering result,the sequential filtering is adopted to process the additional range rate measurement and the DCMKF-PreDcos algorithm with extra range rate information is *** predicted information is also introduced to calculate the involved statistical characteristics of converted *** effectiveness of the proposed algorithms is shown in simulation results.

关键词： nonlinear filtering range rate information target tracking direction cosine coordinates predicted information

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PM-support interfacial effect and oxygen mobility in Pt,Pd or Rh-loaded(Ce,Zr,La)O_(2) catalysts

引用

Frontiers of Environmental Science & Engineering 2021年第4期15卷 311-323页

作者： ting Wang Renxian Zhou Institute of Catalysis Zhejiang UniversityHangzhou310028China

The physicochemical properties of Pt-,Pd-and Rh-loaded(Ce,Zr,La)O_(2)(shorted for CZL)catalysts before/after aging treatment were systematically characterized by various techniques to illustrate the relationship of the dynamic oxygen storage/release capacity and redox ability with their catalytic performances for HC,NO_(x)and CO ***/CZL catalyst exhibits the optimum catalytic performance for HC and NO_(x)elimination,which mainly contribute to its excellent redox ability and dynamic oxygen storage/release capacity(DOSC)at lower temperature due to the stronger PM(precious metals)-support ***,the worse stability of Pt-O-Ce species and volatile Pt oxides easily result in the dramatical decline in catalytic activity after ***/CZL shows higher catalytic activity for CO conversion by reason of more Olatt species as the active oxygen for CO oxidation ***/CZL catalyst displays the widest dynamic operation window for NO_(x)elimination as a result of greater oxygen mobility at high temperature,and the ability to retain more Rh-O-Ce species after calcined at 1100℃effectively restrains sintering of active RhOx species,improving the thermal stability of Rh/CZL catalyst.

关键词： Precious metal-loaded(Ce,Zr,La) O_(2)catalysts Oxygen mobility Catalytic performance

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UPFC setting to avoid active power flow loop considering wind power uncertainty

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Frontiers in Energy 2023年第1期17卷 165-175页

作者： Shenghu LI ting WANG School of Electrical Engineering and Automation Hefei University of TechnologyHefei 230009China

The active power loop flow(APLF)may be caused by impropriate network configuration,impropriate parameter settings,and/or stochastic bus *** power flow controllers,e.g.,the unified power flow controller(UPFC),may be the reason and the solution to the loop *** this paper,the critical existence condition of the APLF is newly integrated into the simultaneous power flow model for the system and *** with the existing method of alternatively solving the simultaneous power flow and sensitivity-based approaching to the critical existing condition,the integrated power flow needs less iterations and calculation ***,with wind power fluctuation,the interval power flow(IPF)is introduced into the integrated power flow,and solved with the affine Krawcyzk iteration to make sure that the range of active power setting of the UPFC not yielding the *** with Monte Carlo simulation,the IPF has the similar accuracy but less time.

关键词： active power loop flow(APLF) unified power flow controller(UPFC) wind power uncertainty interval power flow(IPF)

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