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A stable anthraquinone-derivative cathode to develop sodium metal batteries: The role of ammoniates as electrolytes

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Journal of Energy Chemistry 2023年第2期77卷 572-580,I0015页

作者： Débora ruiz-martínez José m.Orts Roberto Gómez Departament de Química Física i Institut Universitari d’Electroquímica Universitat d’AlacantApartat 99Alicante E-03080Spain

Rechargeable sodium metal batteries constitute a cost-effective option for energy storage although sodium shows some drawbacks in terms of reactivity with organic solvents and dendritic *** we demonstrate that an organic dye,indanthrone blue,behaves as an efficient cathode material for the development of secondary sodium metal batteries when combined with novel inorganic *** electrolytes are ammonia solvates,known as liquid ammoniates,which can be formulated as NaI·3.3NH_(3) and NaBF_(4)·2.5NH_(3).They impart excellent stability to sodium metal,and they favor sodium non-dendritic growth linked to their exceedingly high sodium ion *** advantage is complemented by a high specific *** battery described here can last hundreds of cycles at 10 C while keeping a Coulombic efficiency of 99%from the first *** of the high capacity of the cathode and the superior physicochemical properties of the electrolytes,the battery can reach a specific energy value as high as 210 W h kgIB^(-1),and a high specific power of 2.2 kW kgIB^(-1),even at below room temperature(4℃).Importantly,the battery is based on abundant and cost-effective materials,bearing promise for its application in large-scale energy storage.

关键词： Sodium metal batteries Anthraquinone-based cathode Vat dye Indanthrone blue Inorganic electrolytes Liquid ammoniates

Geodesic Vulnerability Approach for Identification of Critical Buses in Power Systems

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Journal of modern Power Systems and Clean Energy 2021年第1期9卷 37-45页

作者： Jesus Beyza Eduardo Garcia-Paricio Hector F.ruiz Jose m.Yusta Instituto Tecnologico de morelia Avenida Tecnologico 1500Lomas de Santiaguito58120Mexico the Department of Electrical Engineering University of ZaragozaC/Maria de Luna 350018Spain

One of the most critical issues in the evaluation of power systems is the identification of critical buses. For this purpose, this paper proposes a new methodology that evaluates the substitution of the power flow technique by the geodesic vulnerability index to identify critical nodes in power *** methods are applied comparatively to demonstrate the scope of the proposed approach. The applicability of the methodology is illustrated using the IEEE 118-bus test system as a case study. To identify the critical components, a node is initially disconnected, and the performance of the resulting topology is evaluated in the face of simulations for multiple cascading faults. Cascading events are simulated by randomly removing assets on a system that continually changes its structure with the elimination of each component. Thus, the classification of the critical nodes is determined by evaluating the resulting performance of 118 different topologies and calculating the damaged area for each of the disintegration curves of cascading failures. In summary, the feasibility and suitability of complex network theory are justified to identify critical nodes in power systems.

关键词： Power system critical node complex network theory cascading failure load flow

microstructural Development and mechanical Properties of Pm Ti-45Al-2Nb-2mn-0.8 vol.%TiB_2 Processed by Field Assisted Hot Pressing

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Journal of materials Science & Technology 2014年第11期30卷 1145-1154页

作者： R.munoz-moreno E.m.ruiz-Navas B.Srinivasarao J.m.Torralba Department of materials Science and Engineering Universidad Carlos Ⅲ de MadridAvda.Universidad 3028911 LeganésMadridSpain ImDEA materials Institute C/Eric Kandel 228906 GetafeMadridSpain

A γ-TiAI intermetallic alloy, Ti-45Al-2Nb-2mn （at.%）-0.8 vol.%TiB2, has been processed from gas atomized praalloyed powder by field assisted hot pressing （FAHP）. An initial analysis of the prealloyed powder helped on the understanding of the intermetallic sintering behavior. Atomized powder consisted of α metastable phase that transformed into α2＋γ equilibrium phases by thermal treating. Different powder particle microstructures were found, which influence the microstructure development of the FAHP T-TiAI material depending on the sintering temperature. Duplex, nearly lamellar and fully lamellar microstructures were obtained at the sintaring temperatures above 1000 ℃. Lower consolidation temperatures, below 1000 ℃, led to the formation of an AI rich phase at powder particle boundaries, which is deleterious to the mechanical properties. High compressive yield strength of 1050 mPa was observed in samples with FAHP duplex microstructures at room temperature. Whereas nearly lamellar and fully lamellar microstructures showed yield strength values of 655 and 626 mPa at room temperature and 440 and 425 mPa at 750 ℃, respectively, which are superior in comparison to similar alloys processed by other techniques. These excellent properties can be explained due to the different volume fractions of the α2 and γ phases and the refinement of the Pm microstructures.

关键词： Titanium aluminides Powder metallurgy microstructure mechanical properties Field assisted sintering

Beacon-Less Geographic Routing in Real Wireless Sensor Networks

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Journal of Computer Science & Technology 2008年第3期23卷 438-450页

作者： Juan A.Sánchez Rafael marín-Pérez Pedro m.ruiz Department of Information and Communications Engineering University of MurciaSpain

Geographic Routing （GR） algorithms require nodes to periodically transmit HELLO messages to allow neighbors to know their positions （beaconing mechanism）. Beacon-less routing algorithms have recently been proposed to reduce the control overheads due to these messages. However, existing beacon-less algorithms have not considered realistic physical layers. Therefore, those algorithms cannot work properly in realistic scenarios. In this paper we present a new beacon-less routing protocol called BOSS. Its design is based on the conclusions of our open-field experiments using Tmote-sky sensors. BOSS is adapted to error-prone networks and incorporates a new mechanism to reduce collisions and duplicate messages produced during the selection of the next forwarder node. We compare BOSS with Beacon-Less Routing （BLR） and Contention-Based Forwarding （CBF） algorithms through extensive simulations. The results show that our scheme is able to *** almost perfect packet delivery ratio （like BLR） while having a low bandwidth consumption （even lower than CBF）. Additionally, we carried out an empirical evaluation in a real testbed that shows the correctness of our simulation results.

关键词： geographic routing beacon-less forwarding performance evaluation real deployment

machine learning-based zero-touch network and service management:a survey

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Digital Communications and Networks 2022年第2期8卷 105-123页

作者： Jorge Gallego-madrid Ramon Sanchez-Iborra Pedro m.ruiz Antonio F.Skarmeta Department of Information and Communication Engineering University of Murcia30100MurciaSpain Department of Engineering and Applied Techniques University Center of Defense30729San Javier Air Force BaseSpain

The exponential growth of mobile applications and services during the last years has challenged the existing network ***,the arrival of multiple management solutions to cope with this explosion along the end-to-end network chain has increased the complexity in the coordinated orchestration of different segments composing the whole *** Zero-touch Network and Service management(ZSm)concept has recently emerged to automatically orchestrate and manage network resources while assuring the Quality of Experience(QoE)demanded by *** Learning(mL)is one of the key enabling technologies that many ZSm frameworks are adopting to bring intelligent decision making to the network management *** paper presents a comprehensive survey of the state-of-the-art application of mL-based techniques to improve ZSm *** this end,the main related standardization activities and the aligned international projects and research efforts are deeply *** this dissection,the skyrocketing growth of the ZSm paradigm can be ***,different standardization bodies have already designed reference architectures to set the foundations of novel automatic network management functions and resource *** with these advances,diverse mL techniques are being currently exploited to build further ZSm developments in different aspects,including multi-tenancy management,traffic monitoring,and architecture coordination,among ***,different challenges,such as the complexity,scalability,and security of mL mechanisms,are also identified,and future research guidelines are provided to accomplish a firm development of the ZSm ecosystem.

关键词： Zero-touch network and service management(ZSm) Next generation networks(NGN) Artificial intelligence(AI) machine learning(mL)

Reproduction ecology of the recently invasive snake Hemorrhois hippocrepis on the island of Ilbiza Elba

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Current Zoology 2020年第4期66卷 363-371页

作者： Elba moNTES monica FERICHE Leticia ruiz-SUEIRo Esmeralda ALAmINos Juan m.Pleguezuelos Department of Zoology Faculty of Biological SciencesUniversity of Valenciac/Dr.Moliner50BurjassotValencia E-46100Spain Department of Zoology Faculty of SciencesGranada UniversityGranada E-18071Spain Laboratory of Ecology and Evolution Butantan InstituteUniversity of Sao PauloAv.Vital Brazil1.500ButantaE-05503900Sao PauloBrasil Department of Sciences Granada Sciences ParkGranadaSpain*Address correspondence to Elba Montes

Knowing the causes of biological invasion success can be relevant to combat future invasive *** recent invasion of the horseshoe whip snake Hemorrhois hippocrepis on the island of Ibiza provides the opportunity to compare natural history traits between invasive and source populations,and to unravel what makes this snake a successful invader that is threatening the only endemic vertebrate of the island,Podarcis *** study compares the basic reproductive traits of mainland native and invasive populations of the *** results revealed that invasive populations were characterized by female maturity at a smaller size,extended reproductive period,and much lower reproduction frequency compared to the native *** contrast,some major reproductive traits--the abdominal fat body cycle,clutch size,hatchling body size,and hatchling body condition,did not differ between the two *** of these results must reflect the environmental differences in the recently invaded island with respect to the source area,and overall plasticity of reproductive *** is evolutionarily interesting,and may aid the succesful growth of this species in their invasiveness of mediterranean islands like *** most significant finding is that this expression of phenotypic plasticity occurred rapidly in this invasive population,within a period of 14 years *** results on the reproduction ecology of the invasive population were not conclusive regarding the factors determining the invasiveness of the snake and pointed to alternative causes.

关键词： lbiza invasion sucess islands reproduction frequency.snakes

Endoscopic ultrasound-guided gastroenterostomy for gastric outlet obstruction in mexico

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World Journal of Surgical Procedures 2024年第3期14卷 15-20页

作者： massiel madelin Rosario-morel Rodrigo Soto-Solis Katia Picazo-Ferrera miriam Idalia Torres-ruiz JoséAlberto Estradas-Trujillo mario Alberto Gallardo-Ramírez Gerardo Akram Darwich-del moral Luis Ariel Waller-González Department of Endoscopy Centro Médico Nacional“20 de Noviembre”ISSSTEMexico City 03229Mexico Department of Gastroenterology HospitalÁngeles PedregalMexico City 10700Mexico Department of Endoscopy Centro Médico ABCMexico City 01120Mexico Department of Endoscopy Hospital General de México“Dr.Eduardo Liceaga”Mexico City 06720Mexico

BACKGROUND Endoscopic ultrasound-guided gastroenterostomy(EUS-GE)has recently emerged as an alternative treatment for gastric outlet obstruction(GOO)in selected *** To report the initial experience of EUS-GE in patients with *** This study was a retrospective,observational,multicenter study in which the data from 10 patients who underwent EUS-GE due to GOO between September 2021 and may 2023 were *** analyzed technical success,clinical success,adverse events,and *** success was defined as adequate positioning and deployment of the *** success was defined as the patient’s ability to tolerate oral intake without vomiting 7 d after the *** adverse events were *** Eleven procedures in 10 patients with GOO were *** mean age of the patients was 67.5 years(range:56-77 years).malignant GOO was present in 9 *** success was achieved in 9/11 procedures(82%).Among them,clinical success was achieved in 9 patients(100%).Adverse events occurred in 1 patient(9%).The median survival was 3 months(n=7;range:1-8 months).CONCLUSION EUS-GE is a feasible therapeutic option in the treatment of GOO.

关键词： Endoscopic ultrasound-guided gastroenterostomy Gastric outlet obstruction Lumen apposing metal stent Interventional endoscopic ultrasound Gastrojejunostomy Duodenal stenting

Comparison of choroidal vessel thickness in children and adult eyes by enhanced-depth imaging optical coherence tomography imaging

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International Journal of Ophthalmology(English edition) 2018年第4期11卷 681-686页

作者： Daren Hanumunthadu Jorge ruiz-medrano Sunila Dumpala Ayesha Jabeen Asiya Jabeen Abhilash Goud Josém ruiz-moreno Jay Chhablani moorfields Eye Hospital National Health Service Foundation Trust LondonEC 1V 2PDUnited Kingdom Ophthalmology Unit Clinico San Carlos University HospitalMadrid 28040Spain Alicante Institute of Ophthalmology Vissum CorporationAlicante 03016Spain Srimati Kanuri Santhamma Centre for Vitreo-Retinal Diseases LV Prasad Eye InstituteHyderabad 500034India Department of Ophthalmology Castilla La Mancha UniversityAlbacete 13071Spain

AIm： To evaluate choroidal thickness, medium choroidal vessel thickness（mCVT） and large choroidal vessel thickness（LCVT） in normal children and adult ***： manual measurements of subfoveal choroidal thickness（SFCT）, mCVT and LCVT at subfoveal and 750 μm nasal and temporal to fovea locations were completed on enhanced-depth imaging optical coherence tomography（EDI-OCT） scans of normal children and adult ***： Fifty adult and fifty-seven child subjects were included in the study（including 80 adult and 103 child eyes）. mean（±SD） SFCT of adult and children eyes in the study was 309.3±95.7 μm and 279.3±50.4 μm respectively. SFCT and subfoveal mCVT in adult eyes were significantly more than children（P=0.01 and P≤0.0001 respectively）.CONCLUSION： There is choroidal thickening with associated thickening of medium choroidal vessels in adults, suggesting that there is alteration in choroidal vasculature with ageing.

关键词： choroid ageing optical coherence tomography vasculature thickness

A Note on Residue Formulas for the Euler Class of Sphere Fibrations

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Chinese Annals of mathematics,Series B 2011年第4期32卷 615-618页

作者： Francisco Gómez ruiz Departamento de Algebra Geometría y Topología Universidad de Málaga Campus Universitario de Teatinos 29071 Málaga Spain

This paper presents a definition of residue formulas for the Euler class ot eohomology-oriented sphere fibrations ε. If the base of ε is a topological manifold, a Hopf index theorem can be obtained and, for the smoo... 详细信息

关键词： Euler class Sphere fibration Hopf index theorem Residue formulas