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Approximating home ranges of humpback and fin whales in Drake Passage and Antarctica

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Advances in Polar Science 2020年第4期31卷 248-257页

作者： JoséLuis ORGEIRA Facundo alvarez Departamento Biología de los Predadores Tope Instituto Antártico Argentino.Buenos AiresArgentina Programa de pós-graduação em Ecologia e Conservação.Campus de Nova Xavantina.Universidade do Estado de Mato Grosso Brasil

Identifying home ranges—those areas traversed by individuals in their normal foraging,mating,and parenting activities—is an important aspect of cetacean *** these ranges facilitates identification of resource use and *** and humpback whales occur in Antarctica during the austral summer,but information regarding their home ranges is *** opportunistically collected whale sighting data from eight consecutive summer seasons spanning 2010–2017,we approximate the home ranges of humpback and fin whales around Drake Passage(DRA),West of Antarctic Peninsula(WAP),South Shetland Islands(SSI),an area northwest of the Weddell Sea(WED),and around the South Orkney Islands(SOI).Approximate home ranges are identified using Kernel Density Estimation(KDE).Most fin whales occurred north and northwest of the SOI,which suggests that waters near these islands support concentrations of this *** humpback whales were observed around the SSI,but unlike fin whales,their distributions were highly variable in other *** suggests spatial segregation in areas where both species exist such as SOI,SSI,and *** redundancy analysis(pRDA)suggests that the distributions of these species are more affected by spatial variables(latitude,longitude)than by local scale variables such as sea surface temperature and *** study presents a visual approximation of the home ranges of fin and humpback whales,and identifies variation in the effects of space and environmental variables on the distributions of these whales at different spatial scales.

关键词： humpback whale fin whale home range Antarctica Drake Passasge

Optimal Low-voltage Distribution Topology with Integration of PV and Storage for Rural Electrification in Developing Countries:A Case Study of Cambodia

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Journal of Modern Power Systems and Clean Energy 2020年第3期8卷 531-539页

作者： Vannak Vai Marie-Cecile alvarez-Herault Bertrand Raison Long Bun Department of Electrical and Energy Engineering(GEE) Institute of Technology of Cambodia(ITC)Phnom Penh 12150Cambodia Institute of Engineering UniversitéGrenoble Alpes38000 GrenobleFrance

This paper addresses an optimal design of low-voltage(LV)distribution network for rural electrification considering photovoltaic(PV)and battery energy storage(BES).It aims at searching for an optimal topology of an LV distribution system as well as the siting and sizing of PV and storage over a time horizon of 30 ***,the shortest-path algorithm(SPA)and first-fit bin-packing algorithm(FFBPA)are used to search for the optimal radial topology that minimizes the total length of the distribution line and improves the load ***,the optimal siting of decentralized BES(DeBES)is determined using a genetic algorithm(GA)to eliminate the undervoltage constraints due to the load *** iterative techniques are elaborated to size the maximum peak power of PV and the minimum number of DeBES that can be connected to an LV network without violating the voltage and current ***,the sizing strategy of centralized BES(CeBES)is developed to avoid reverse power flows into the medium-voltage(MV)***,a Monte Carlo approach is used to study the impact of load profile uncertainties on the topology.A non-electrified village in Cambodia has been chosen as a case study.

关键词： Battery energy storage(BES) low-voltage(LV)distribution network Monte Carlo photovoltaic(PV) electrification planning

Reconstructing the Memory of the Wounded Social Body:A Philosophical Theological Reflection from the Search for Missing Persons in Mexico

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Journal of Foreign Languages and Cultures 2021年第2期5卷 33-38,156页

作者： Carlos Mendoza-alvarez Boston College

This essay analyzes the phenomenon of clandestine graves of missing persons in Mexico as a social,political,and philosophical problem,where theological clues are *** the contributions of decolonial thought this reflection seeks to think the absence and,within it,to think the emergence of an alternative world promoted by the just people of history with the resistances they create to live the present with dignity and hope.

关键词： missing people resistances survivors messianic times

Hepatitis B transmission by cell and tissue allografts:How safe is safe enough?

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World Journal of Gastroenterology 2014年第23期20卷 7434-7441页

作者： Pilar Solves Vicente Mirabet Manuel alvarez Blood Bank Hospital Universitari I Politècnic La FeBulevar Sur46026 ValenciaSpain

More than 2 million human tissue transplants(bone,tendon,cartilage,skin,cornea,amniotic membrane,stem cells,heart valve,blood vessel,etc.),are performed worldwide every *** and tissues are shared between countries which have different regulations and laboratory equipment and represent a risk of hepatitis B virus(HBV)transmission that has become a global safety *** the risk of transfusiontransmitted HBV infection from blood donations has been estimated,the rate of HBV transmission from donors to recipients of allografts is unknown and varies between different *** are various important ways of reducing the transmission risk,but donor screening and donor testing are still the main factors for preventing HBV *** detection is included in the routine screening tests for cell and tissue *** standard test for preventing transplant-transmitted hepatitis B is the hepatitis B surface *** implementation of methods involving nucleic acid amplification and the new generation of reactives to detect viral antibodies or antigens with an immunoassay,has increased the sensitivity and the specificity of the screening *** objective of our research was to review the literature and critically analyse the different steps for avoiding HBV transmission in cell and tissue donors,focusing on the screening tests performed.

关键词： Hepatitis B virus Tissue bank Tissue transplantation

Highly efficient multi-metal catalysts for carbon dioxide reduction prepared from atomically sequenced metal organic frameworks

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Nano Research 2021年第2期14卷 493-500页

作者： Celia Castillo-Blas Consuelo alvarez-Galvan Ines Puente-Orench Alba Garcia-Sanchez Freddy E.Oropeza Enrique Gutirrez-Puebla Angeles Monge Victor A.de la Pena-O'hea felipe Gandara Materials Science Institute of Madrid(CSIC) C/Sor Juana Ines de la Cruz 3Madrid 28049Spain Instituto de Catalisis y Petroleoquimica(CSIC) dM arie Curie 2Madrid 28049Spain Instituto de Ciencia de Materiales de Aragon Pedro Cerbuna 12Zaragoza 50009Spain Institut Laue Langevin 71 Avenue des Martyrs38042 GrenobleFrance Photoactivated Processes Unit IMDEA Energy Institute Mostoles Technology ParkAvenida Ramdn de la Sagra 3MostolesMadrid 28935Spain Department of Inorganic Chemistry University Autonomous of MadridC/Frandsco Tomdsy Valiente 7Madrid 28049Spain

The precise control on the combination of multiple metal atoms in the structure of metal-organic frameworks(MOFs)endowed by reticular chemistry,allows the obtaining of materials with compositions that are programmed for achieving enhanced *** present work illustrates how through the transformation of MOFs with desired arrangements of metal cations,multi-metal spinel oxides with precise compositions can be obtained,and used as catalyst precursor for the reverse water-gas shift *** differences in the spinel initial composition and structure,determined by neutron powder diffraction,influence the overall catalytic activity with changes in the process of in s itu formation of active,metal-oxide supported metal nanoparticles,which have been monitored and characterized with in situ X-ray diffraction and photoelectron spectroscopy studies.

关键词： reticular chemistry multi-metal metal-organic frameworks(MOFs) carbon dioxide reduction heterogeneous catalysis reverse water-gas shift in-situ X-ray photoelectron spectroscopy(XPS)

A prototype for on-site generation of chlorinated disinfectant for use in rural aqueducts

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Water Science and Engineering 2024年第1期17卷 33-40页

作者： Diana Marcela Cuesta Parra felipe Correa Mahecha Andrés felipe Rubio Pinzon Davidcamilo Ramirez Bustos Leonel Alveyro Teran Llorente Miguel Fernando Jimenez Jimenez Chemical and Environmental Engineering Department Fundacion Universidad de AmericaBogota 117111Colombia Chemical Engineering Department Fundacion Universidad de AmericaBogota 117111Colombia Mecanical Engineering Department Fundacion Universidad de AmericaBogota 117111Colombia

Sodium hypochlorite has significant potential as a sanitation solution in hard-to-reach *** studies have investigated the optimal electrolysis parameters for its production with volumes greater than 1o *** study evaluated sodium hypochlorite production through electrolysis in a 22-L prototype and identified the optimal operating *** were performed using graphite electrodes with areas of 68.4 cm^(2) at the laboratory scale and 1865.0 cm^(2) at the prototype scale.A design for experiments with different operating times,chloride concentrations,and electric current intensities was *** optimal operating time,sodium chloride concentration,and current intensity at the laboratory scale were 120 min,150 g of chloride per liter,and 3 A,respectively,leading to the production of 5.02 g/L of the disinfectant with an energy efficiency of 12.21 mg of Cl_(2) per *** the prototype scale,the maximum sodium hypochlorite concentration of 3.99 g of chloride per liter was achieved with an operating time of 120 min,a sodium chloride concentration of 100 g of chloride per liter,and a current intensity of 70 A,reaching an energy efficiency of 42.56 mg of Cl_(2) per *** addition,this study evaluated the influences of the chloride concentration,current intensity,and operating time on the production of sodium hypochlorite at the two scales,and formulated the equations showing the trends of sodium hypochlorite production and energy efficiency in the electrochemical *** 22-L prototype model for production of this oxidizing substance is promising for disinfection of large volumes of water in areas that are difficult to access.

关键词： Disinfection Electrolysis Energy efficiency Optimization Sodium hypochlorite

State Estimation Using Non-uniform and Delayed Information: A Review

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International Journal of Automation and computing 2018年第2期15卷 125-141页

作者： Jhon A.Isaza Hector A.Botero Hernan alvarez Universidad Nacional de Colombia Research group on dynamic processes-Kalman Group

The study and application of methods for incorporating nonuniform and delayed information in state estimation tech- niques are important topics to advance in soft sensor development. Therefore, this paper presents a review of these methods and pro- poses a taxonomy that allows a faster selection of state estimator in this type of applications. The classification is performed according to the type of estimator, method, and used tool. Finally, using the proposed taxonomy, some applications reported in the literature are de- scribed.

关键词： State estimation asynchronism delayed measurement non-uniform information taxonomy.

Prey and predators perceive orb-web spider conspicuousness differently: evaluating alternative hypotheses for color polymorphism evolution

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Current Zoology 2019年第5期65卷 559-570页

作者： Nathalia G.XIMENES felipe M.GAWRYSZEWSKI Animal Colouration and Evolution Lab Departamento de ZoologiaInstituto de Ciencias BiologicasUniversidade de BrasiliaBrasiliaDF70910-900Brazil Pos-Graduaqao em Ecologia e Evoluqao Universidade Federal de GoiasCampus SamambaiaGoianiaGO74690-900Brazil

Color polymorphisms have been traditionally attributed to apostatic *** perception of color depends on the visual system of the *** models predict that differently perceived degrees of conspicuousness by two predator and prey species may cause the evolution of polymorphisms in the presence of anti-apostatic and apostatic *** spider Gasteracantha cancriformis(Araneidae)possesses several conspicuous color *** orb-web spiders,the prey attraction hypothesis states that conspicuous colors are prey lures that increase spider foraging success via flower ***,polymorphism could be maintained if each morph attracted a different prey species(multiple prey hypothesis)and each spider mimicked a different flower color(flower mimicry hypothesis).Conspicuous colors could be a warning signal to predators because of the spider's hard abdomen and *** predators could perceive morphs differently and exert different degrees of selective pressures(multiple predator hypothesis).We explored these 3 hypotheses using reflectance data and color vision modeling to estimate the chromatic and achromatic contrast of *** morphs as perceived by several potential prey and predator *** results revealed that individual taxa perceive the conspicuousness of morphs ***,the multiple prey hypothesis and,in part,the multiple predator hypothesis may explain the evolution of color polymorphism in ***,even in the presence of anti-apostatic *** flower mimicry hypothesis received support by color metrics,but not by color vision *** parameters not evaluated by color vision models could also affect the perception of morphs and influence morph survival and polymorphism stability.

关键词： aposematism Araneidae Gasteracantha cancriformis luring prey attraction visual communication

Production Cross-Section Estimates for Strongly-Interacting Electroweak-Symmetry Breaking Sector Resonances at Particle Colliders

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Communications in Theoretical Physics 2015年第12期64卷 701-709页

作者： Antonio Dobado GUO Feng-Kun felipe J.Llanes-Estrada Departamento de Física Teórica Universidad Complutense de Madrid State Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of Science Helmholtz-Institut für Strahlen-und Kernphysik and Bethe Center for Theoretical Physics Universitat Bonn

We are exploring a generic strongly-interacting Electroweak Symmetry Breaking Sector(EWSBS) with the low-energy effective field theory for the four experimentally known particles(W_L~±,Z_l,h) and its dispersion-relation based unitary *** this contribution we provide simple estimates for the production cross-section of pairs of the EWSBS bosons and their resonances at proton-proton colliders as well as in a future e^-e^+(or potentially aμ^-μ^+) collider with a typical few-TeV *** examine the simplest production mechanisms,tree-level production through a W(dominant when quantum numbers allow) and the simple effective boson approximation(in which the electroweak bosons are considered as collinear partons of the colliding fermions).We exemplify with custodial isovector and isotensor resonances at 2 TeV,the energy currently being discussed because of a slight excess in the ATLAS 2-jet *** find it hard,though not unthinkable,to ascribe this excess to one of these W_lW_l rescattering *** isovector resonance could be produced at a rate smaller than,but close to earlier CMS exclusion bounds,depending on the parameters of the effective *** ZZ excess is then problematic and requires additional physics(such as an additional scalar resonance).The isotensor one(that would describe all charge combinations) has smaller cross-section.

关键词： strongly interacting electroweak symmetry breaking