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Nano Research 2019年第5期12卷 1217-1218页

作者： Antonio J.martinez-Galera jose m.gomez-rodriguez Departamento de Fisica de la materia Condensada Universidad Autonoma de MadridMadrid E-28049Spain Condensed matter Physics Center(IFImAC) Universidad Autonoma de MadridMadrid E-28049Spain Instituto Nicolas Cabrera Universidad Autonoma de MadridMadrid E-28049Spain

The writings of the text on the last line,left column on the 4^th page and the text on lines 8^th,10^th,11^th and 16^th in the 4^th paragraph,left column and on lines from 1st to 8^th in the 1st paragraph,right column on the 5^th page,and the text on line 4^th in the 1^st paragraph,left column on the 9^th page,and Fig.3 and its caption on the 5^th page in the original version of this article were unfortunately incorrect.

关键词： corrugation hexagonal boron nitride graphene monolayers

Influence of metal support in-plane symmetry on the corrugation of hexagonal boron nitride and graphene monolayers

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Nano Research 2018年第9期11卷 4643-4653页

作者： Antonio d. martinez-Galera jose m. gomez-rodriguez Departamento de Fisica de la matefia Condensada Universidad Autonoma de Madrid Madrid E-28049 Spain Condensed matter Physics Center (IFImAC) UniversidadAutdnoma de Madrid Madrid E-28049 Spain Instituto Nicolds Cabrera Universidad Autonoma de Madrid Madrid E-28049 Spain

Predicting the properties of two-dimensional （2D） materials as graphene and hexagonal boron nitride （h-BN） monolayers after their growth on any given substrate is a major challenge. While the influence of the electron configuration of the atoms of the underlying surface is well-understood, the effect of substrate geometry still remains unclear. The structural properties of h-BN monolayers grown on a rectangularly packed Rh（110） surface were characterized in situ by ultrahigh vacuum scanning tunneling microscopy and were compared to those that this material exhibits when grown on substrates showing different crystallographic orientations. Although the h-BN monolayer grown on Rh（110） was dominated by a unique quasiunidimensional moir6 pattern, suggesting considerable interface interaction, the moir6 corrugation was unexpectedly smaller than those reported for strongly interacting interfaces with hexagonal-terminated substrates, owing to differences in the possible binding landscapes at interfaces with differently oriented substrates. moreover, a rule was derived for predicting how interface corrugation and the existence and extent of subregions within moir6 supercells containing favorable sites for orbital mixing between h-BN monolayers and their supports depend on substrate symmetry. These general symmetry considerations can be applied to numerous 2D materials, including graphene, thereby enabling the prediction of how substrate choice determines the properties of these materials. Furthermore, they could also provide new routes for tuning 2D material properties and for developing nanotemplates showing different geometries for Krowing adsorbate superlattices.

关键词： hexagonal boron nitride graphene two-dimensional materials scanning tunneling microscopy moire superstructures nanotemplates

Synthesis and characterization of nano-hydroxyapatite added with magnesium obtained by wet chemical precipitation

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Progress in Natural Science:materials International 2021年第4期31卷 575-582页

作者： Brandon A.Correa-Pi?a Omar m.gomez-Vazquez Sandra m.Londo?o-Restrepo Luis F.Zubieta-Otero Beatriz m.millan-malo mario E.rodriguez-García Posgrado en Ciencia e Ingeniería de materiales Centro de Física Aplicada y Tecnología Avanzada Universidad Nacional Autónoma de México Campus Juriquilla Departamento de Nanotecnología Centro de Física Aplicada y Tecnología Avanzada Universidad Nacional Autónoma de México Campus Juriquilla

Biogenic hydroxyapatites from mammalian bones naturally contain traces of ions, like mg, which play a vital role in the bone remodeling process. In this way, synthetic hydroxyapatites should include this kind of mineral. In this work, hydroxyapatite added with mg was synthesized by wet precipitation using（NH;）H;PO;, Ca（NO;）;.4 H;O,and mg（NO;）;.6 H;O（0, 0.032, 0.061, and 0.123 m）. Inductively coupled plasma and X-ray diffraction evidenced the mg inclusion in the hydroxyapatite lattice in the same levels reported for natural hydroxyapatites. The calcination at 600℃ was performed to remove the reaction by-products, but it also gave rise to physicochemical changes as the coalescence and crystals recrystallization. It produced, in turn, an improvement in the crystalline quality, according to Raman analysis. Despite those physicochemical changes, all the samples remained nanometric according to scanning electron microscopy imaging.

关键词： magnesium Physicochemical properties Calcination Nanometric crystal size Coalescence Recrystallization

A New Phasor Estimator for PmU Applications:P Class and m Class

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Journal of modern Power Systems and Clean Energy 2020年第1期8卷 55-66页

作者： jose R.Razo-Hernandez Arturo mejia-Barron David Granados-Lieberman martin Valtierra-rodriguez jose F.gomez-Aguilar ENAP-Research Group Facultad de IngenieríaUniversidad Autónoma de Querétaro(UAQ)San CayetanoC.P.76807México ENAP-Research Group Departamento de Ingeniería ElectromecánicaInstituto Tecnológico Superior de Irapuato(ITESI)Colonia El CopalC.P.36821México CONACyT-Centro Nacional de Investigación y Desarrollo Tecnológico(CENIDET) Tecnológico Nacional de MéxicoInterior Internado Palmira S/NCol.PalmiraC.P.62490México

Phasor measurement units(PmUs)are fundamental tools in the applications of modern power systems,where synchronized phasor estimations are *** accuracy and dynamic performance requirements for phasor,frequency,and rate of change of frequency(ROCOF)estimations are established in the IEEE Std.C37.118.1-2011 along with the IEEE Std.C37.118.1 a-2014,where two PmU performances are suggested:P class filters for applications requiring fast response and m class filters for applications requiring high rejection to aliased *** this paper,a methodology to design new phasor estimators that satisfy the P class and m class requirements in PmUs is *** proposed methodology is based on finite impulse response filters,brick-wall filters,and complex filter design concepts,where frequency range,time performance,harmonic rejection and out-of-band interference requirements are considered in its design.A comparative analysis using the reference model given by the IEEE Std.C37.118.1 is *** results show the effectiveness of the phasor estimators under steady-state and dynamic conditions according to the PmU standard,making them suitable tools for applications in power systems.

关键词： Brick-wall filter complex filter IEEE Std.C37.118.1 m class P class phasor measurement unit(PmU) phasor estimator

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Twists and Gromov Hyperbolicity of Riemann Surfaces

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Acta mathematica Sinica,English Series 2011年第1期27卷 29-44页

作者： Katsuhiko mATSUZAKI jose m. rodriguez Department of mathematics School of Education Waseda University Shinjuku Tokyo 169-8050 Japan Departamento de matemdticas Universidad Carlos IH de Madrid Avenida de la Universidad 30 28911 Legangs Madrid Spain

The main aim of this paper is to study whether the Gromov hyperbolicity is preserved under some transformations on Riemann surfaces （with their Poincare metrics）. We prove that quasiconformal maps between Riemann surfaces preserve hyperbolicity; however, we also show that arbitrary twists along simple closed geodesics do not preserve it, in general.

关键词： Quasiconformal maps Riemann surfaces Gromov hyperbolicity

On a Classical Theorem on the Diameter and minimum Degree of a Graph

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Acta mathematica Sinica,English Series 2017年第11期33卷 1477-1503页

作者： Veronica HERNANDEZ Domingo PESTANA jose m. rodriguez Universidad CarlosⅢde madrid Avenida de la Universidad3028911 LeganesSpain

In this work, we obtain good upper bounds for the diameter of any graph in terms of its minimum degree and its order, improving a classical theorem due to Erdos, Pach, Pollack and Tuza. We use these bounds in order to study hyperbolic graphs （in the Gromov sense）. To compute the hyperbolicity constant is an almost intractable problem, thus it is natural to try to bound it in terms of some parameters of the graph. Let H（n, δ0） be the set of graphs G with n vertices and minimum degree 50, and J（n, Δ） be the set of graphs G with n vertices and maximum degree A. We study the four following extremal problems on graphs： a（n,δ0） = min{δ（G）｜ G ∈H（n, δ0）}, b（n, δ0） =- max{δ（G）｜ e ∈H（n, δ0）}, α（n, Δ） = min{δ（G） [ G ∈ J（n, Δ）} and β（n,Δ） = max{δ（G） ] G∈Π（n,Δ）}. In particular, we obtain bounds for b（n, δ0） and we compute the precise value of a（n, δ0）, α（n, Δ） and w（n, Δ） for all values of n, r0 and A, respectively.

关键词： Extremal problems on graphs diameter minimum degree maximum degree Gromov hyperbolicity hyperbolicity constant finite graphs

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Effects of antibiotics on hydrogen production and gut symbionts in the Formosan subterranean termite Coptotermes formosanus （Isoptera： Rhinotermitidae）

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Insect Science 2012年第3期19卷 346-354页

作者： Yueqing Cao Jian-Zhong Sun jose m.rodriguez College of Bioengineering Chongqing UniversityChongqingChina Coastal Research&Extension Center Mississippi State UniversityPoplarvilleMSUSA School of the Environment Jiangsu UniversityZhenjiangJiangsu ProvinceChina mississippi State Chemical Laboratory Petroleum Production DivisionMississippi State UniversityStarkvilleMSUSA

Symbiotic microorganisms that inhabit the gut of Coptotermes formosanus enable this termite to degrade lignocelluloses and further produce hydrogen as an important intermediate to be recycled in its hindgut or as a byproduct to be emitted to the atmosphere. Both symbiotic protists and prokaryotes in the guts of termites demonstrated some different roles with respect to hydrogen production. In this study, the effects of two antibiotics, ampicillin and tetracycline, on hydrogen emission and the gut symbionts of C. formosanus were investigated. Hydrogen emission from termite guts was significantly enhanced when termites fed on wood diets treated with either ampicillin or tetracycline. The greatest H2 emission rates, 2 519 4- 74 and 2 080 ＋ 377 nmol/h/g body weight, were recorded with the treatments of ampicillin and tetracycline, respectively, which showed 6-7 times more H2 production than that of controls. Antibiotic-treated diets negatively affected the prokaryotic communities and reduced their abundances, particularly on those ectosymbionts inhabiting the gut walls or in the gut fluid of C. formosanus, such as spirochetes. However, no signif- icant reductions in the cotmts of gut cellulolytic protists, Pseudotrichonympha grassii and Holomastigotoids hartmanni, were recorded; and with a further observation by confocal laser scanning microscopy, the endosymbionts inhabiting P. grassii generally survived the antibiotic treatments. These results suggest that some prokaryotes may serve as the main hydrogen consumers, while P. grassii, together with its endosymbionts, may function as the main contributors for hydrogen production in the hindgut of C. formosanus.

关键词： antibiotics hydrogen symbiotic microorganisms wood-feeding termites

Different Roles of microalloying in Thin Slab Direct Rolling Technologies

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Journal of Iron and Steel Research International 2011年第S1期18卷 459-465页

作者： rodriguez-Ibabe jose m Uranga Pello Lopez Beatriz CEIT and Tecnun (Univ.of Navarra) P M.Lardizabal 1520018-San SebastianBasque CountrySpain

HSLA steels constitute one of the main types of steels produced worldwide by Thin Slab Direct Rolling technologies (TSDR).Among microalloying elements,the most widely used are V,Nb and *** elements play different roles during the austenite evolution in *** austenite conditioning before transformation,the limitations in the total reduction that can be applied in TSDR technologies need to be considered when composition/process parameters are *** this context,whereas an important number of studies have been focused on Nb microalloyed grades,a less systematic analysis has been performed concerning the role of vanadium on austenite *** paper analyzes these singularities taking into account different process parameter conditions,such as total reduction and initial rolling temperature.

关键词： thin slab direct rolling microalloyed steels vanadium niobium austenite conditioning

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A Survey on model Predictive Control of DFIGs in Wind Energy Conversion Systems

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CSEE Journal of Power and Energy Systems 2024年第3期10卷 1085-1104页

作者： Shuo Yan Junyu Chen minghao Wang Yongheng Yang jose m.rodriguez STEm College RMIT UniversityMelbourneAustralia Hong Kong Polytechnic University Hong KongChina State Key Laboratory of Internet of Things for Smart City(Um) Department of Electrical and Computer EngineeringUniversity of MacaoMacaoChina College of Electrical Engineering Zhejiang UniversityHangzhou 310027China Universidad San Sebastin Campus BellavistaSantiago de ChileCLSantiago de Chile 000000Chile IEEE

This paper presents a comprehensive study on the model predictive control(mPC)of doubly fed induction generators(DFIG)in wind energy conversion systems(WECS);in particular the mPC of the rotor side *** general principle of prevalent mPC strategies is discussed to introduce the theoretical framework in the first ***,mainstream and high-performance mPC methods of DFIGs have been identified as model predictive current control(mPCC),model predictive torque control(mPTC),and model predictive power control(mPPC).Starting from analyzing dynamic models,these mPC strategies are investigated in terms of operating principles and technical *** paper further investigates implementation of mPC strategies in unbalanced *** on the quantitative and qualitative analysis of several case studies,performance of various mPC schemes is compared and their special features are *** for designing mPC strategies of DFIGs in WECS are provided.

关键词： Doubly fed induction generator(DFIG) model predictive control(mPC) wind energy

Hydrogen emission by three wood-feeding subterranean termite species （Isoptera Rhinotermitidae）： Production and characteristics

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Insect Science 2010年第3期17卷 237-244页

作者： Yueqing Cao Jian-Zhong Sun jose m. rodriguez Karmen C. Lee Coastal Research and Extension Center Mississippi State University Poplarville Mississippi USA College of Bioengineering Chongqing University Chongqing China School of the Environment Jiangsu University Zhenjiang Jiangsu Province China mississippi State Chemical Laboratory Petroleum Production Division Mississippi State University Starkville Mississippi USA

Hydrogen emission by wood-feeding termites, Coptotermes formosanus, Reticulitermes flavipes and Reticulitermes virginicus, was investigated upon a cellulosic substrate as their food source. The emission rates among the three species tested were significantly different and R. virginicus demonstrated the greatest H2 emission at 4.78 ± 0.15μmol/h/g body weight. In a sealed test apparatus, H2 emission for each termite species showed a quick increase at the initial incubation hours （3-6 h）, followed by a slower growth, possibly due to the feedback inhibition by gas accumulation. Further investigation revealed that continuous H2 emission could be maintained by reducing the H2 partial pressure in the sealed container. The bioconversion of cellulose to molecular H2 by the subterranean termites tested could reach as high as 3 858 ± 294μmol/g cellulose, suggesting that the termite gut system is unique and efficient in H2 conversion from cellulosic substrate.

关键词： biofuel hydrogen methane subterranean termite symbiotic micro-organism