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Roles of Polycomb complexes in regulating gene expression and chromatin structure in plants

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Plant Communications 2022年第1期3卷 135-151页

作者： Fernando Baile Angeles gomez-Zambrano Myriam Calonje Institute of Plant Biochemistry and Photosynthesis(IBVF-CSIC-US) Avenida Americo Vespucio 4941092 SevilleSpain

The evolutionary conserved Polycomb Group(PcG)repressive system comprises two central protein complexes,PcG repressive complex 1(PRC1)and *** complexes,through the incorporation of histone modifications on chromatin,have an essential role in the normal development of *** recent years,a significant effort has been made to characterize these complexes in the different kingdoms,and despite there being remarkable functional and mechanistic conservation,some key molecular principles have *** this review,we discuss current views on the function of plant PcG *** compare the composition of PcG complexes between animals and plants,highlight the role of recently identified plant PcG accessory proteins,and discuss newly revealed roles of known PcG *** also examine the mechanisms by which the repression is achieved and how these complexes are recruited to target ***,we consider the possible role of some plant PcG proteins in mediating local and long-range chromatin interactions and,thus,shaping chromatin 3D architecture.

关键词： Polycomb Group PRC1 PRC2 histone modifications gene repression chromatin organization

Guest Editorial: State Estimation for Future Cyber-physical Power and Energy Systems:Challenges and Solutions

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Journal of Modern Power Systems and Clean Energy 2020年第4期8卷 595-596页

作者： Antonio gomez-Exposito Lamine Mili Wenchuan Wu Universidad de Sevilla Virginia Tech Tsinghua University

LARGE-SCALE renewable power plants and distributed generators are integrated in the electric power systems on the generation side,meanwhile new demand-response technologies are being deployed on the demand side,such a... 详细信息

关键词： power Power energy

On SIR epidemic models with generally distributed infectious periods： Number of secondary cases and probability of infection

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International Journal of Biomathematics 2017年第2期10卷 157-169页

作者： A. gomez-Corral M. Lopez-Garcia Instituto de Ciencias Matemdticas CSIC- UAM- UC3M- UCM Calle Nicolds Cabrera 13-15 Madrid 28049 Spain Department of Applied Mathematics School of Mathematics University of Leeds Leeds LS29JT UK

Recently, Clancy [SIR epidemic models with general infectious period distribution, Statist. Prob. Left. 85 （2014） 1-5] has shown how SIR epidemics in which individuals＇ infection periods are not necessarily exponentially distributed may be modeled in terms of a piecewise-deterministic Markov process （PDMP）. In this paper, we present a more detailed description of the underlying PDMP, from which we analyze the population transmission number and the infection probability of a certain susceptible individual.

关键词： Number of secondary cases piecewise-deterministic Markov process proba-bility of infection SIR epidemic model.

The long-term stability of calcium arsenates:Implications for phase transformation and arsenic mobilization

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Journal of Environmental Sciences 2019年第10期31卷 29-41页

作者： Danni Zhang Shaofeng Wang ying Wang Mario A.gomez yongfeng Jia Key Laboratory of Pollution Ecology and Environmental Engineering Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 China Institute of Environmental Protection Shenyang University of Chemical Technology Shenyang 110142 China

It is well known that calcium arsenates may not be a good choice for arsenic removal and immobilization in hydrometallurgical ***,they are still produced at some plants in the world due to various ***,calcium arsenates can also naturally precipitate under some specific ***,the transformation process of poorly crystalline calcium arsenates(PCCA)and the stability of these samples under atmospheric CO2 are not yet well *** work investigated the transformation process of PCCA produced by using different neutralization reagents(CaO ***)with various Ca/As molar ratios at pH 7-12 in the presence of atmospheric *** aging at room temperature for a period of time,for samples neutralized with NaOH and precipitated at pH 10 and 12,release of arsenic back into the liquid phase *** contrast,for the samples precipitated at pH 8,the aqueous concentration of arsenic was observed to ***,Raman,and SEM results suggested that the formation of various types of crystalline calcium carbonates and/or calcium arsenates controls the arsenic ***,the application of lime may enhance the stability of the generated ***,no matter what neutralization reagent is used,the stability of the generated PCCA is still of concern.

关键词： Arsenic Precipitate Calcium Stability CO2

High-throughput study of the anomalous Hall effect

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npj Computational Materials 2023年第1期9卷 767-774页

作者： JakubŽelezný yuta yahagi Carles gomez-Olivella yang Zhang yan Sun Institute of Physics Czech Academy of SciencesCukrovarnická1016200 Praha 6Czech Republic Department of Applied Physics Tohoku UniversitySendaiMiyagiJapan Department of Physics and Astronomy University of Tennessee KnoxvilleKnoxvilleTN 37996USA Min H.Kao Department of Electrical Engineering and Computer Science University of TennesseeKnoxvilleTN 37996USA Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China

Despite its long history,the anomalous Hall continues to attract attention due to its complex origins,its connection to topology,and its use as a probe of magnetic *** this work we investigate the anomalous Hall effect in 2871 ferromagnetic materials using an automatic high-throughput calculation *** analyze general properties of the effect,such as its reliance on spin-orbit coupling strength and *** materials with the largest anomalous Hall effect,we find that symmetry-protected band degeneracies in the non-relativistic electronic structure,such as mirror symmetry-protected nodal lines,are typically responsible for the large ***,we examine the dependence of the anomalous Hall effect on magnetization direction and demonstrate deviations from the commonly assumed expression j^(AHE)~M×E.

关键词： effect symmetry protected

Hierarchical Mean-Field Type Control of Price Dynamics for Electricity in Smart Grid

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Journal of Systems Science & Complexity 2022年第1期35卷 1-17页

作者： FRIHI Zahrate El Oula CHOUTRI Salah Eddine BARREIRO-gomez Julian TEMBINE Hamidou Laboratory of Probability and Statistics(La PS) Department of MathematicsBadji-Mokhtar UniversityB.P.12Annaba 23000Algeria. NyUAD Research Institute New York University Abu DhabiUAE Learning&Game Theory Laboratory New York University Abu DhabiSaadiyat Campus PO Box 129188UAE

This paper solves a mean-field type hierarchical optimal control problem in electricity *** authors consider n-1 prosumers and one *** ith prosumer,for 1 详细信息

This paper solves a mean-field type hierarchical optimal control problem in electricity *** authors consider n-1 prosumers and one *** ith prosumer,for 1yer(agent)is the follower at the bottom whereas the nth is the leader at the *** problem is described by a linear jump-diffusion system of conditional mean-field type,where the conditioning is with respect to common noise,and a quadratic cost functional involving,the square of the conditional expectation of the controls of the *** authors provide a semi-explicit solution of the corresponding meanfield-type hierarchical control problem with common ***,the authors illustrate the obtained result via a numerical example with two different scenarios.

关键词： Electricity price dynamics hierarchical control mean-field-type control smart grids

Demographic Origins of the Great Recession:Implications for China

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China & World Economy 2013年第2期21卷 97-118页

作者： Rafael gomez Danielle Lamb Centre for Industrial Relations and Human Resources University of Toronto Ted Rogers School of Management Ryerson University

The demographic dividend, that is, the growth of the working age population aged 16years relative to younger and older age dependents, has often been cited as a crucial component of the accelerated economic growth experienced by disparate countries and regions at different points in time. Generally less emphasized are the ramifications of this proeess when it occurs in reverse; that is, when the relative size of the working age population begins to shrink. Related to this is the more subtle effect of changes to the age structure of the overall working age population, which can have compounding or offsetting effects in relation to the demographic dividend noted above. This paper explores how these age-related phenomena were instrumental to both the Great Depression and the Great Recession of 2008. We explore how the generational eomposition of economic actors and the aging of the baby-boom worker may have played a role in provoking these remarkable recessionary periods. The reversal of the demographic dividend and the aging of the working age population are factors now contributing to the propagation of the global economic downturn, as witnessed in the example of Japan over the past half-century. This paper applies the lessons of the Great Depression, the Great Recession and Japan to offer a forward-looking analysis of the Chinese economy. China is on the precipiee of a significant demographic shift whose implications for economic growth are explored.

关键词： age structure demographic dividend economic growth financial crisis recession

MEC-based architecture for interoperable and trustworthy internet of moving things

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Digital Communications and Networks 2023年第1期9卷 270-279页

作者： Jesus Sanchez-gomez Rafael Marin-Perez Ramon Sanchez-Iborra Miguel Angel Zamora Department of Information and Communications Engineering University of MurciaMurciaSpain Odin Solutions S.L. MurciaSpain University Center of Defense San Javier Air Force BaseMurciaSpain

The expansion of the Internet of Moving Things(IoMT)leads to limitless and continuous working playgrounds exploited by highly dynamic end *** requires the adoption of multi-Radio Access Technologies(RATs)-based strategies to provide IoMT units with ubiquitous *** this end,the development of secure bootstrapping and authentication mechanisms is necessary to permit the secure operation of end *** the transmission and power limitations of these elements,current cryptographic solutions do not address these stringent *** that reason,in the study we present a Multi-Access Edge Computing(MEC)-based endto-end architecture that enables an efficient and secure authentication and key agreement between end devices and network servers over heterogeneous resource-limited networks such as the Low Power Wide Area Networks(LPWANs).Our proposal is based on the Authentication,Authorization,and Accounting(AAA)architecture and the recent Internet Engineering Task Force initiatives Static Context Header Compression and Low-Overhead *** results obtained from experimental tests reveal the validity of the proposal as it enables constrained IoMT devices to gain IPv6 connectivity as well as performs end-to-end secure authentication with notable reliability and controlled latency.

关键词： Internet of moving things LPWAN Authentication LO-CoAP-EAP SCHC

High levels of arbuscular mycorrhizal fungus colonization on Medicago truncatula reduces plant suitability as a host for pea aphids (Acyrthosiphon pisum)

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Insect Science 2020年第1期27卷 99-112页

作者： Elisa Garzo Eric Rizzo Alberto Fereres S.Karen gomez nstituto de Ciencias Agrarias-Consejo Superior de Investigaciones Cientificas(ICA-CSIC) MadridSpain School of Biological Sciences University of Northern ColoradoGreeleyColoradoUSA

This study sheds light on a poorly understood area in insect-plant-microbe interactions,focusing on aphid probing and feeding behavior on plants with varying levels of arbuscular mycorrhizal(AM)fungus root *** investigates a commonly occurring interaction of three species:pea aphid Acyrthosiphon pisum,barrel medic Medicago truncatula,and the AM fungus Rhizophagus irregularis,examining whether aphid-feeding behavior changes when insects feed on plants at different levels of AM fungus colonization(42% and 84% root length colonized).Aphid probing and feeding behavior was monitored throughout 8 h of recording using the electrical penetration graph(EPG)technique,also,foliar nutrient content and plant growth were ***,aphids took longer to reach their 1st sustained phloem ingestion on the 84% AM plants than on the 42% AM plants or on *** aphids showed phloem ingestion on the 84% AM plants relative to the 42% AM *** of the 84% AM plants had higher percent carbon(43.7%)relative to controls(40.5%),and the 84% AM plants had reduced percent nitrogen(5.3%)relative to the 42% AM plants(6%).In conclusion,EPG and foliar nutrient data support the hypothesis that modifications in plant anatomy(e.g.,thicker leaves),and poor food quality(reduced nitrogen)in the 84% AM plants contribute to reduced aphid success in locating phloem and ultimately to differences in phloem sap *** work suggests that *** plants benefit from AM symbiosis not only because of increased nutrient uptake but also because of reduced susceptibility to aphids.

关键词： Aphididae arbuscular mycorrhizal fungus electrical penetration graph(EPG) Fabaceae Glomeraceae insect-plant-microbe interactions symbiosis