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The effects of patch richness on con-specific interference in the parasitoid Ibalia leucospoides （Hymenoptera： Ibaliidae）

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Insect Science 2010年第4期17卷 379-385页

作者： Valeria fernandez-Arhex juan carlos Corley Lab. Ecologia de tnsectos INTA EEA-Bariloche Bariloche Rio Negro Argentina

We experimentally studied con-specific interference in Ibalia leucospoides, a parasitoid of the woodwasp Sirex noctilio, on pine logs containing variable numbers of woodwasp larvae. Competiton occurred when two different-sized female parasitoids foraged on a host patch, and consequently the small female always abandoned the patch. Regardless of host density, con-specific presence did not affect the attack rate, the number of hosts attacked, nor patch residence time by the winner, when compared to a control female that foraged alone. In contrast, con-specific presence reduced patch time and the number of hosts attacked by the loser. Finally patch time （by both） as well as number of hosts attacked （by the winner only） increased with host density per patch. Our results suggest that con-specific presence has different consequences for different-sized females during patch exploitation.

关键词： aggregation direct competition host-parasitoid interactions parasitoid com-petition patch quality Sirex noctilio

Large deformations in deep tunnels excavated in weak rocks:Study on Y-Basque high-speed railway tunnels in northern Spain

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Underground Space 2021年第6期6卷 636-649页

作者： Cosimo Iasiello juan carlos Guerra Torralbo Cesar Torrero fernandez IRP biuro projektow sp.z.o.o. al.Jana Pawla Ⅱ 1100-828 WarszawaPoland European University of Madrid Calle Tajos/n 28670 Villaviciosa de OdonMadridSpain Ayesa Ingenierıa S.A. Paseo Castellana 9128046 MadridSpain

Designing the support system for a deep tunnel in weak rock is always challenging,because a misjudgment of real rock behavior can lead to *** the construction of the Legutiano tunnel,which belongs to the high-speed railway network named Y-Basque in Spain,the measured convergences exhibited large deformations,which were significantly higher than those in the detailed *** first glance,these deformations were associated with squeezing,as the tunnel was excavated in flysch-shales and limonite with a maximum cover of approximately 360 *** aim of this study is to perform a retrofit analysis to compare the most popular empirical and analytical approaches for evaluating the squeezing effect,using geotechnical data pertaining to other tunnels excavated in the same area and in the same geological ***,a non-linear finite element analysis,focusing on time-dependent rock behavior,is conducted to reproduce the convergences measured.

关键词： Shales Limonite Squeezing Plaxis Tunnel monitoring

A review of data-driven whole-life state of health prediction for lithium-ion batteries:Data preprocessing,aging characteristics,algorithms,and future challenges

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journal of Energy Chemistry 2024年第10期97卷 630-649,I0013页

作者： Yanxin Xie Shunli Wang Gexiang Zhang Paul Takyi-Aninakwa carlos fernandez Frede Blaabjerg School of Information Engineering Southwest University of Science and TechnologyMianyang 621010SichuanChina College of Electric Power Inner Mongolia University of TechnologyHohhot 010080Inner MongoliaChina School of Pharmacy and Life Sciences Robert Gordon UniversityAberdeen AB10-7GJUK Department of Energy Technology Aalborg UniversityPontoppidanstraede 1119220 Aalborg EastDenmark

Lithium-ion batteries are the preferred green energy storage method and are equipped with intelligent battery management systems(BMSs)that efficiently manage the *** not only ensures the safety performance of the batteries but also significantly improves their efficiency and reduces their damage *** their whole life cycle,lithium-ion batteries undergo aging and performance degradation due to diverse external environments and irregular degradation of internal *** degradation is reflected in the state of health(SOH)***,this review offers the first comprehensive analysis of battery SOH estimation strategies across the entire lifecycle over the past five years,highlighting common research focuses rooted in data-driven *** delves into various dimensions such as dataset integration and preprocessing,health feature parameter extraction,and the construction of SOH estimation *** approaches unearth hidden insights within data,addressing the inherent tension between computational complexity and estimation *** enha nce support for in-vehicle implementation,cloud computing,and the echelon technologies of battery recycling,remanufacturing,and reuse,as well as to offer insights into these technologies,a segmented management approach will be introduced in the *** will encompass source domain data processing,multi-feature factor reconfiguration,hybrid drive modeling,parameter correction mechanisms,and fulltime health *** on the best SOH estimation outcomes,health strategies tailored to different stages can be devised in the future,leading to the establishment of a comprehensive SOH assessment *** will mitigate cross-domain distribution disparities and facilitate adaptation to a broader array of dynamic operation *** article reviews the current research landscape from four perspectives and discusses the challenges that lie *** and practitioners can gain

关键词： Lithium-ion batteries Whole life cycle Aging mechanism Data-driven approach State of health Battery management system

Multi-time scale identification of key kinetic processes for lithium-ion batteries considering variable characteristic frequency

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journal of Energy Chemistry 2023年第7期82卷 521-536,I0011页

作者： Haotian Shi Shunli Wang jianhong Liang Paul Takyi-Aninakwa Xiao Yang carlos fernandez Liping Wang School of Information Engineering Southwest University of Science and TechnologyMianyang 621010SichuanChina Department of Mechanical Engineering Tsinghua UniversityBeijing 100084China School of Pharmacy and Life Sciences Robert Gordon UniversityAberdeen AB10-7GJUK

The electrification of vehicles puts forward higher requirements for the power management efficiency of integrated battery management systems as the primary or sole energy *** this paper,an efficient adaptive multi-time scale identification strategy is proposed to achieve high-fidelity modeling of complex kinetic processes inside the *** specifically,a second-order equivalent circuit model network considering variable characteristic frequency is constructed based on the high-frequency,medium-high-frequency,and low-frequency characteristics of the key kinetic ***,two coupled sub-filters are developed based on forgetting factor recursive least squares and extended Kalman filtering methods and decoupled by the corresponding time-scale *** coupled iterative calculation of the two sub-filter modules at different time scales is realized by the voltage response of the kinetic diffusion *** addition,the driver of the low-frequency subalgorithm with the state of charge variation amount as the kernel is designed to realize the adaptive identification of the kinetic diffusion process ***,the concept of dynamical parameter entropy is introduced and advocated to verify the physical meaning of the kinetic *** experimental results under three operating conditions show that the mean absolute error and root-mean-square error metrics of the proposed strategy for voltage tracking can be limited to 13 and 16 mV,***,from the entropy calculation results,the proposed method can reduce the dispersion of parameter identification results by a maximum of 40.72%and 70.05%,respectively,compared with the traditional fixed characteristic frequency *** proposed method paves the way for the subsequent development of adaptive state estimators and efficient embedded applications.

关键词： Lithium-ion battery Kinetic parameters Entropy evaluation Parameter identification Frequency characteristic

A hybrid data driven framework considering feature extraction for battery state of health estimation and remaining useful life prediction

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Green Energy and Intelligent Transportation 2024年第2期3卷 50-59页

作者： Yuan Chen Wenxian Duan Yigang He Shunli Wang carlos fernandez School of Artificial Intelligence Anhui UniversityHefei 230009China State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchun 130022China School of Electrical Engineering and Automation Wuhan UniversityWuhan 430000China School of Information Engineering Southwest University of Science and TechnologyMianyang 621010China School of Pharmacy and Life Sciences Robert Gordon UniversityAberdeenAB10-7GJUK

Battery life prediction is of great significance to the safe operation,and reduces the maintenance *** paper proposes a hybrid framework considering feature extraction to achieve more accurate and stable life prediction performance of the *** feature extraction,eight features are obtained to fed into the life prediction *** hybrid framework combines variational mode decomposition,the multi-kernel support vector regression model and the improved sparrow search algorithm to solve the problem of data backward,uneven distribution of high-dimensional feature space and the local escape ability,*** parameters of the estimation model are obtained by introducing the elite chaotic opposition-learning strategy and adaptive weights to optimize the sparrow search *** algorithm can improve the local escape ability and convergence performance and find the global *** comparison is conducted by dataset from National Aeronautics and Space Administration which shows that the proposed framework has a more accurate and stable prediction *** with other algorithms,the SOH estimation accuracy of the proposed algorithm is improved by 0.16%–1.67%.With the advance of the start point,the RUL prediction accuracy of the proposed algorithm does not change much.

关键词： State of heath Improved sparrow search algorithm Remaining useful life Variational mode decomposition Multi-kernel support vector regression Feature extraction

Water-soluble hollow nanocrystals from self-assembly of AIEEactive Pt(II)metallomesogens

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Nano Research 2021年第1期14卷 245-254页

作者： Cristian Cuerva javier fernandez-Lodeiro Mercedes Cano jose Luis Capelo-Martinez carlos Lodeiro BIOSCOPE Research Group LAQV@REQUIMTE Chemistry DepartmentNOVA School of Science and TechnologyNOVA University Lisbon2829-516 CaparicaPortugal PROTEOMASS Scientific Society Rua dos InventoresMadam ParqueCaparica Campus2829-516 CaparicaPortugal Department of Inorganic Chemistry Complutense University of MadridCiudad Universitaria28040 MadridSpain

Luminescent hollow micro-and nanocrystals have been successfully obtained taking advantage of the self-assembly behavior and the aggregation-induced emission enhancement properties of several bispyrazolate Pt(II)metallomesogens decorated with four terminal alkyl ***-in-water droplets have been used to confine the Pt(II)compounds and drive them to be self-assembled via intermolecular Pt…Pt interactions into spherical aggregates of about 200 or 50 *** of the oil phase generates highly-stable aqueous dispersions of nanocrystals that emit a bright orange light as a result of the existence of^(3)MMLCT excited *** methods and conditions have been tested for studying the effect of several parameters such as the temperature and the stirring speed in the final particle size and in the polydispersity ***,the micro-and nanocrystals are able to entrap hydrophobic drugs between the alkyl chains of the compounds,forming stable dispersions of drug-loaded capsules in *** droplet method is applied in the area of metallomesogens for the first time to synthesize self-assembled Pt(II)nanocapsules,which opens a new field of study that could allow the use of these liquid crystal materials in biomedical applications.

关键词： R(II)metallomesogens self-assembly luminescent nanomaterials droplets nanocapsules

Coherent interface strengthening of ultrahigh pressure heat-treated Mg-Li-Y alloys

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journal of Materials Science & Technology 2020年第16期47卷 79-83页

作者： Shun Zhang Yong Sun Ruizhi Wu Xiang Wang Xiao-Bo Chen carlos fernandez Qiuming Peng State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao066004China Key Laboratory of Superlight Materials&Surface Technology Ministry of EducationHarbin Engineering UniversityHarbin150001China School of Engineering RM IT UniversityCarlton3053VICAustralia School of Pharmacy and Life Sciences Robert Gordon UniversityAberdeenAB107GJUK

Achieving good strength-ductility of Mg alloys has always been a crucial issue for the widespread applications of Mg-based structural ***,an unexpected double-stage strengthening phenomenon was discovered in Mg-8Li-1Y(wt.%)alloys through high pressure(6 GPa)heat treatments over a range of 700-1300℃.Attractively,the yield strength values are improved remarkably without losing their *** low temperature strengthening mechanism is mainly driven by the formation of large-volume nanoscale contraction *** contrast,the high-temperature strengthening reason is ascribed to the presence of densely nano-sized stacking *** coherent interfaces contribute effectively to high mechanical strength without any tradeoff in ductility.

关键词： Mg alloys Nano-twins Stacking faults Strengthening

Mechanical and hydraulic properties of carbonate rock:The critical role of porosity

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journal of Rock Mechanics and Geotechnical Engineering 2023年第4期15卷 814-825页

作者： Kam Ng j.carlos Santamarina Department of Civil and Architectural Engineering and Construction Management University of WyomingLaramieWY82071USA Physical Science and Engineering Division King Abdullah University of Science and TechnologyThuwal23955-6900Saudi Arabia

Carbonate rocks are extensively used in civil infrastructure and play a critical role in geoenergy geoengineering,either as hydrocarbon reservoirs or potential repositories for CO_(2)geological *** genesis and diagenetic overprint determine the properties of carbonate *** study combines recent data gathered from Madison Limestone and an extensive dataset compiled from published sources to analyze the hydraulic and mechanical properties of limestone carbonate *** models and data analyses recognize the inherently granular genesis of carbonate rocks and explain the strong dependency of physical properties on *** asymptotically-correct power model in terms of(1-Ф/Ф*)a is a good approximation to global trends of unconfined stiffness E and unconfined compressive strength UCS,cohesive intercept in Mohr-Coulomb failure envelopes,and the brittle-toductile transition *** power model is the analytical solution for the mechanical properties of percolating granular *** adopted a limiting granular porosityФ*=0.5 for all models,which was consistent with the loosest packing of monosize *** fitted power model has exponent(α=2)in agreement with percolation theory and highlights the sensitivity of mechanical properties to *** and models confirm a porosity-independent ratio between unconfined stiffness and strength,and the ratio follows a log-normal distribution with mean(E/UCS)≈*** high angle of internal shear strength measured for carbonate rocks reflects delayed contact failure with increased confinement,and it is not sensitive to *** spans more than six orders of *** size controls pore size and determines the reference permeability k^(*)at the limiting porosityФ*=*** a given grain size from fine to coarse-grained dominant carbonates,permeability is very sensitive to changes in porosity,suggesting preferential changes in the internal pore network during compaction.

关键词： Rock porosity Carbonate permeability Rock unconfined stiffness Unconfined compressive strength(UCS)

T follicular helper expansion and humoral-mediated rejection are independent of the HVEM/BTLA pathway

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Cellular & Molecular Immunology 2017年第6期14卷 497-510页

作者： jose-Ignacio Rodriguez-Barbosa carlos fernandez-Renedo Ana Maria Bravo Moral Leo Biihler Maria-Luisa del Rio Transplantation Immunobiology Section Institute of Biomedicine University of Leon and Castilla and Leon Regional Transplantation Coordination Leon University Hospital Leon Spain Department of Veterinary Clinical Sciences University of Santiago de Compostela Veterinary Faculty Lugo Spain Visceral and Transplantation Surgery Department of Surgery University Hospitals of Geneva and Faculty of Medicine Geneva Switzerland

The molecular pathways contributing to humoral-mediated allograft rejection are poorly defined. In this study, we assessed the role of the herpesvirus entry mediator/B- and T-lymphocyte attenuator （HVEM/BTLA） signalling pathway in the context of antibody-mediated allograft rejection. An experimental setting was designed to elucidate whether the blockade of HVEM/BTLA interactions could modulate de novo induction of host antidonor-specific antibodies during the course of graft rejection. To test this hypothesis, fully allogeneic major histocompatibility complex-mismatched skin grafts were transplanted onto the right flank of recipient mice that were treated with isotype control, anti-CD40L or modulatory antibodies of the HVEM/BTLA signalling pathway. The frequencies of CD4 T follicular helper （Tfh） cells （B220-, CD4＋ CXCR5＋ PD-lhigh）, extrafollicular helper cells （B220-, CD4＋ CXCR5- PD-1＋ and PD-1-） and germinal centre （GC） B cells （B220＋Fas＋ GL7＋） were analysed by flow cytometry in draining and non-draining lymph nodes at day 10 post transplantation during the acute phase of graft rejection. The host antidonor isotype-specific humoral immune response was also assessed. Whereas blockade of the CD40/CD40L pathway was highly effective in preventing the allogeneic humoral immune response, antibody-mediated blockade of the HVEM/BTLA-interacting pathway affected neither the expansion of Tfh cells nor the expansion of GC B cells. Consequently, the course of the host antidonor antibody-mediated response proceeded normally, without detectable evidence of impaired development. In summary, these data indicate that HVEM/BTLA interactions are dispensable for the formation of de novo host antidonor isotype-specific antibodies in transplantation.

关键词： BTLA (CD272) humoral immunity HVEM (TNFRSF14, CD270) T follicular helper cells transplantation