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Updated roles of the gut microbiota in exploring shrimp etiology, polymicrobial pathogens, and disease incidence

Zoological Research 2024年第4期45卷 910-923页

作者： Jin-Bo Xiong hao-nan sha Jiong Chen State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products School of Marine SciencesNingbo UniversityNingboZhejiang 315211China Key Laboratory of Aquacultural Biotechnology Ministry of EducationSchool of Marine SciencesNingbo UniversityNingboZhejiang 315211China Laboratory of Biochemistry and Molecular Biology School of Marine SciencesNingbo UniversityNingboZhejiang 315211China

Litopenaeus vannamei is the most extensively cultured shrimp species globally,recognized for its scale,production,and economic ***,its aquaculture is plagued by frequent disease outbreaks,resulting in rapid and massive *** research often lags behind the emergence of new diseases,leaving the causal agents of some shrimp diseases unidentified and leading to nomenclature based on symptomatic presentations,especially in cases involving co-and polymicrobial *** data on shrimp disease statuses remain *** this review,we summarize current knowledge on shrimp diseases and their effects on the gut ***,we also propose a workflow integrating primary colonizers,“driver”taxa in gut networks from healthy to diseased states,disease-discriminatory taxa,and virulence genes to identify potential polymicrobial *** examine both abiotic and biotic factors(e.g.,external and internal sources and specific-disease effects)that influence shrimp gut microbiota,with an emphasis on the“holobiome”concept and common features of gut microbiota response to diverse *** excluding the effects of confounding factors,we provide a diagnosis model for quantitatively predicting shrimp disease incidence using disease common-discriminatory taxa,irrespective of the causal *** to the conservation of functional genes used in designing specific primers,we propose a practical strategy applying qPCR-assayed abundances of disease common-discriminatory functional *** review updates the roles of the gut microbiota in exploring shrimp etiology,polymicrobial pathogens,and disease incidence,offering a refined perspective for advancing shrimp aquaculture health management.

关键词： Shrimp disease Gut microbiota Polymicrobial pathogens Diagnosis model Disease common-discriminatory taxa Disease prediction

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Stability Prediction in Smart Grid Using PSO Optimized XGBoost Algorithm with Dynamic Inertia Weight Updation

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 909-931页

作者： Adel Binbusayyis Mohemmed sha Department of Software Engineering College of Computer Engineering and Sciences in Al-Kharj Prince Sattam Bin Abdulaziz UniversityAl-Kharj11942Saudi Arabia

Prediction of stability in SG(Smart Grid)is essential in maintaining consistency and reliability of power supply in grid *** the fluctuations in power generation and consumption patterns of smart cities assists in effectively managing continuous power supply in the *** also possesses a better impact on averting overloading and permitting effective energy *** though many traditional techniques have predicted the consumption rate for preserving stability,enhancement is required in prediction measures with minimized *** overcome the complications in existing studies,this paper intends to predict stability from the smart grid stability prediction dataset using machine learning *** accomplish this,pre-processing is performed initially to handle missing values since it develops biased models when missing values are mishandled and performs feature scaling to normalize independent data ***,the pre-processed data are taken for training and *** that,the regression process is performed using Modified PSO(Particle Swarm Optimization)optimized XGBoost Technique with dynamic inertia weight update,which analyses variables like gamma(G),reaction time(tau1–tau4),and power balance(p1–p4)for providing effective future stability in *** PSO attains optimal solution by adjusting position through dynamic inertial weights,it is integrated with XGBoost due to its scalability and faster computational speed *** hyperparameters of XGBoost are fine-tuned in the training process for achieving promising outcomes on *** results are measured through evaluation metrics such as MSE(Mean Square Error)of 0.011312781,MAE(Mean Absolute Error)of 0.008596322,and RMSE(Root Mean Square Error)of 0.010636156 and MAPE(Mean Absolute Percentage Error)value of 0.0052 which determine the efficacy of the system.

关键词： Smart Grid machine learning particle swarm optimization XGBoost dynamic inertia weight update

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数媒时代焦虑、抑郁与社会比较的关系

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心理科学进展 2025年第1期33卷 92-106,I0001-I0007页

作者：赵立白莎首都经济贸易大学工商管理学院北京100070

社会焦虑和抑郁现象日益严重。为理解与探索数媒时代焦虑、抑郁的引致因素及应对策略,研究采用系统性文献综述方法,基于情感事件理论和社会比较理论构建框架,梳理了社会比较的不同亚型与焦虑、抑郁的关系以及网络媒体环境的权变作用。... 详细信息

社会焦虑和抑郁现象日益严重。为理解与探索数媒时代焦虑、抑郁的引致因素及应对策略,研究采用系统性文献综述方法,基于情感事件理论和社会比较理论构建框架,梳理了社会比较的不同亚型与焦虑、抑郁的关系以及网络媒体环境的权变作用。研究发现,消极社会比较(传统上行比较和下行同化比较)可能会引发焦虑和抑郁,社交网络平台对此负面影响具有催化作用;而情绪比较和下行对比比较可以缓解焦虑和抑郁,网络健康社区促进了情绪比较的积极作用的发挥。研究推进了社会比较理论在情绪情感领域的应用,确定了焦虑、抑郁与网络健康社区可供性的关联,也为网络社区服务、运营和设计的原则提供参考和借鉴以帮助个体应对心理健康问题。研究还指出焦虑、抑郁和社会比较关系后续研究的可能路径和方向。

关键词：社会比较焦虑抑郁社交网络平台网络健康社区

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MXene Hybridized Polymer with Enhanced Electromagnetic Energy Harvest for Sensitized Microwave Actuation and Self-Powered Motion Sensing

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nanO-MICRO LETTERS 2025年第1期17卷 1-15页

作者： Wang, Yu-Ze Wang, Yu-Chang Liu, Ting-Ting Zhao, Quan-Liang Li, Chen-sha Cao, Mao-Sheng Beijing Inst Technol Sch Mat Sci & Engn Beijing 100081 Peoples R China Peking Univ Sch Mat Sci & Engn Beijing 100871 Peoples R China North China Univ Technol Sch Mech & Mat Engn Beijing 100144 Peoples R China Heilongjiang Univ Minist Educ Peoples Republ China Key Lab Funct Inorgan Mat Chem Harbin 150080 Peoples R China

Polymeric microwave actuators combining tissue-like softness with programmable microwave-responsive deformation hold great promise for mobile intelligent devices and bionic soft robots. However, their application is challenged by restricted electromagnetic sensitivity and intricate sensing coupling. In this study, a sensitized polymeric microwave actuator is fabricated by hybridizing a liquid crystal polymer with Ti3C2Tx (MXene). Compared to the initial counterpart, the hybrid polymer exhibits unique space-charge polarization and interfacial polarization, resulting in significant improvements of 230% in the dielectric loss factor and 830% in the apparent efficiency of electromagnetic energy harvest. The sensitized microwave actuation demonstrates as the shortened response time of nearly 10 s, which is merely 13% of that for the initial shape memory polymer. Moreover, the ultra-low content of MXene (up to 0.15 wt%) benefits for maintaining the actuation potential of the hybrid polymer. An innovative self-powered sensing prototype that combines driving and piezoelectric polymers is developed, which generates real-time electric potential feedback (open-circuit potential of similar to 3 mV) during actuation. The polarization-dominant energy conversion mechanism observed in the MXene-polymer hybrid structure furnishes a new approach for developing efficient electromagnetic dissipative structures and shows potential for advancing polymeric electromagnetic intelligent devices.

关键词： Microwave absorption Electromagnetic response Energy harvest Self-sensing Soft actuator

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Explicit Symplectic Geometric Algorithms for Quaternion Kinematical Differential Equation

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IEEE/CAA Journal of Automatica Sinica 2018年第2期5卷 479-488页

作者： Hong-Yan Zhang Zi-hao Wang Lu-sha Zhou Qian-nan Xue Long Ma Yi-Fan Niu School of Information Science and Technology Hainan Normal University Haikou 571158 China the Department of Engineering Sino-European Institute of Aviation Engineering Civil Aviation University of China Tianjin 300300 China Civil Aviation University of China Tianjin 300300 China

Solving quaternion kinematical differential equations(QKDE) is one of the most significant problems in the automation, navigation, aerospace and aeronautics literatures. Most existing approaches for this problem neither preserve the norm of quaternions nor avoid errors accumulated in the sense of long term time. We present explicit symplectic geometric algorithms to deal with the quaternion kinematical differential equation by modelling its time-invariant and time-varying versions with Hamiltonian systems and adopting a three-step strategy. Firstly,a generalized Euler's formula and Cayley-Euler formula are proved and used to construct symplectic single-step transition operators via the centered implicit Euler scheme for autonomous Hamiltonian system. Secondly, the symplecticity, orthogonality and invertibility of the symplectic transition operators are proved rigorously. Finally, the explicit symplectic geometric algorithm for the time-varying quaternion kinematical differential equation, i.e., a non-autonomous and non-linear Hamiltonian system essentially, is designed with the theorems proved. Our novel algorithms have simple structures, linear time complexity and constant space complexity of computation. The correctness and efficiencies of the proposed algorithms are verified and validated via numerical simulations.

关键词： Index Terms-Linear time-varying system navigation system quaternion kinematical differential equation (QKDE) real-timecomputation symplectic method.

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Symmetry theories of Hamiltonian systems with fractional derivatives

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Science China(Physics,Mechanics & Astronomy) 2011年第10期54卷 1847-1853页

作者： ZHOU sha FU hao FU JingLi Institute of Mathematical Physics Zhejiang Sci-Tech University Hangzhou 310018 China China Jingye Engineering Corporation Limited Shenzhen Branch Shenzhen 518054 China

The Noether and Lie symmetries as well as the conserved quantities of Hamiltonian system with fractional derivatives are es-tablished. The definitions and criteria for the fractional symmetrical transformations and quasi-symmetrical transformations inthe Noether sense of Hamiltonian system are first discussed. Then, using the invariance of Hamiltonian action under the infini-tesimal transformations with respect to time, generalized coordinates and generalized momentums, the fractional Noethertheorem of the system is obtained. Further, the Lie symmetry and conserved quantity of the system are acquired. Two exam-ples are presented to illustrate the application of the results.

关键词： symmetry conserved quantity Hamiltonian system fractional derivative

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Numerical Simulation of Low Cycle Fatigue Behavior of Ti_(2)AlNb Alloy Subcomponents

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Computer Modeling in Engineering & Sciences 2023年第9期136卷 2655-2676页

作者： Yanju Wang Zhenyu Zhu Aixue sha Wenfeng hao Materials Evaluation Center for Aeronautical and Aeroengine Application AECC Beijing Institute of Aeronautical MaterialsBeijing100095China Faculty of Civil Engineering and Mechanics Jiangsu UniversityZhenjiang212013China College of Mechanical Engineering Yangzhou UniversityYangzhou225127China

Many titanium alloy subcomponents are subjected to fatigue loading in aerospace engineering,resulting in fatigue *** fatigue behavior of Ti_(2)AlNb alloy subcomponents was investigated based on the Seeger fatigue life theory and the improved Lemaitre damage evolution ***,the finite element models of the standard openhole specimen and Y-section subcomponents have been established by *** damage model parameters were determined by fatigue tests,and the reliability of fatigue life simulation results of the Ti_(2)AlNb alloy standard open-hole specimen was ***,the fatigue life of Ti_(2)AlNb alloy Y-section subcomponents was *** the same initial conditions,the average error of fatigue life predicted by two different models was 20.6%.Finally,the effects of loading amplitude,temperature,and Y-interface angle on fatigue properties of Ti_(2)AlNb Y-section subcomponents were *** results provide a new idea for evaluating the fatigue life of various Ti_(2)AlNb alloy subcomponents.

关键词： Fatigue life prediction stiffness degeneration Ti2AlNb alloy continuous damage mechanics numerical simulation

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Tonoplast targeting of VHA-a3 relies on a Rab5-mediated but Rab7-independent vacuolar trafficking route

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Journal of Integrative Plant Biology 2017年第4期59卷 230-233页

作者： qiang-nan Feng Yan Zhang sha Li State Key Laboratory of Crop Biology College of Life SciencesShandong Agricultural UniversityTai’an 271018China

Summary Vacuolar trafficking routes and their regu- lators have recently drawn lots of attention in plant cell biology. A recent study reported the discovery of a plant-specific vacuolar trafficking route, i.e., a direct ER- to-vacuole route, through analysis of VHA-a3 subcellular targeting, a key component for the tonoplast V- ATPases. Our recent findings showed that VHA-a3 targets to the tonoplast through a Rab5-mediated but Rab7-independent pathway, shedding new lights on the unconventional vacuolar trafficking route in plant cells.

关键词： Rab DN Tonoplast targeting of VHA-a3 relies on a Rab5-mediated but Rab7-independent vacuolar trafficking route Figure RFP BFA YFP TGN

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Mild synthesis of N'-aryl-N,N-dimethylformamidinium chloride by Vilsmeier-Haack reagent

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Chinese Chemical Letters 2011年第9期22卷 1043-1046页

作者： Ge Meng Yao Wu sha Rui Zhang nan Bai a Faculty of Pharmacy School of Medicine Xi'an Jiaotong University Xi 'an 710061 China The Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology Ministry of Education Department of Chemistry Tsinghua University Beijing 100084 China

Formamidine derivatives could be used as the building blocks for substituted heterocyclic compounds with various biological activities. N＇-Aryl-N,N-dimethylformamidinium chlorides have been synthesized in high yields by reaction of aromatic primary amines with Vilsmeier-Haack reagent at room temperature. The structures of all the new compounds were identified by ESI-MS, IR and NMR spectra. The steric structures of some of these compounds were clarified by X-ray single crystal analysis.

关键词： Vilsmcier-Haack rcagcnt Formamidinium X-ray singlc crystal

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Real-Time Characterization of Fibrinogen Interaction with Modified Titanium Dioxide Film by Quartz Crystal Microbalance with Dissipation

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Chinese Journal of Chemical Physics 2014年第3期27卷 355-360页

作者： An-sha Zhao Zhao Wang Xiao-hua Zhu Manfred F. Maitz nan Huang Key Laboratory of Advanced Materials Technology of Ministry of:Education Department of Materials Science and Engineering Southwest Jiaotong University Chengdu 510031 China Leibniz Institute of Polymer Research Dresden Max Bergmann Center of Biomaterials Dresden Dresden Germany

The adsorption of fibrinogen can be used as a quick indicator of surface haemocompatibility because of its prominent role in coagulation and platelet adhesion. In this work the molecular interaction between fibrinogen and a modified titanium oxide surface/platelet has been studied by quartz crystal microbalanee with dissipation （QCM-D） in situ. In order to further characterize the conformation of adsorbed fibrinogen, αC and γ-chain antibody were used to check the orientation and denaturation of fibrinogen on solid surface. QCM-D investiga- tions revealed the fibrinogen have the trend to adsorb on hydropllilic surface in a side-on orientation by positively charged αC domains, which would reduce the exposure of platelet bonding site on γ chain and enable less platelet adhesion and be activated. These obser- vations suggest that certain conformations of adsorbed fibrinogen are less platelet adhesive than others, which opens a possibility for creating a non-platelet adhesive substrates.

关键词： Quartz crystal microbalance with dissipation Fibrinogen adsorption Confor- mation change Blood platelet

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