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Open Journal of Clinical Diagnostics 2015年第2期5卷 63-67页

作者： Daniel Fatela-Cantillo Javier Crespo-González Blanca Fatela-Cantillo antonio Fernandez-Suarez Jose Miguel Aguilar Benítez juan antonio saez nieto Remedios González-Amezcua Department of Biotechnology Hospital Alto Guadalquivir Andújar (Jaén) Spain Department of Ophthalmology Hospital Linares Linares (Jaén) Spain Department of Ophthalmology Hospital La Princesa Madrid (Madrid) Spain Department of Biotechnology Hospital Alcalá La Real Alcalá La Real (Jaén) Spain NationalMicrobiology Centre Majadahonda (Madrid) Spain Department of Ophthalmology Hospital Alto Guadalquivir Andújar (Jaén) Spain

We present a case of keratitis caused by Stenotrophomonas maltophilia in a therapeutic contact lens user with trichiasis and symblepharon. This keratitis was initially diagnosed as caused by Achromobacter xylosoxidans, but the strain was sent for species confirmation and the isolate was finally identified as S. maltophilia by means of 16S rDNA sequencing. The patient rapidly improved on administration of fortified ceftazidime. Physicians should be aware that the definitive identification of the pathogenic agent and prolonged antimicrobial treatment according to culture sensitivities in keratitis are mandatory as treatment success depends greatly on them.

关键词： Stenotrophomonas maltophilia Keratitis Ceftazidime

The Role of the Solar Cycle in the Relationship Between the North Atlantic Oscillation and Northern Hemisphere Surface Temperatures

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Advances in Atmospheric Sciences 2007年第2期24卷 191-198页

作者： Laura DE LA TORRE Luis GIMENO juan antonio AEL Raquel nieto Universidad de Vigo Facultad de Ciencias de Ourense 32004OurenseSpain

The North Atlantic Oscillation （NAO） is one of the leading modes of climate variability in the Northern Hemisphere. It has been shown that it clearly relates to changes in meteorological variables, such as surface temperature, at hemispherical scales. However, recent studies have revealed that the NAO spatial pattern also depends upon solar forcing. Therefore, its effects on meteorological variables must vary depending upon this factor. Moreover, it could be that the Sun affects climate through variability patterns, a hypothesis that is the focus of this study. We find that the relationship between the NAO/AO and hemispheric temperature varies depending upon solar activity. The results show a positive significant correlation only when solar activity is high. Also, the results support the idea that solar activity influences tropospheric climate fluctuations in the Northern Hemisphere via the fluctuations of the stratospheric polar vortex .

关键词： solar activity North Atlantic Oscillation Arctic Oscillation Northern Hemisphere surface temperature

CONTROLLABILITY AND OPTIMALITY OF LINEAR TIME-INVARIANT NEUTRAL CONTROL SYSTEMS WITH DIFFERENT FRACTIONAL ORDERS

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Acta Mathematica Scientia 2015年第5期35卷 1003-1013页

作者：丁小丽 juan J.nieto Department of Mathematics Xi’an Polytechnic University Departamento de Análisis Matemático Facultad de MatemáticasUniversidad de Santiago de Compostela Department of Mathematics Faculty of Science King Abdulaziz University

Control systems governed by linear time-invariant neutral equations with different fractional orders are considered. Sufficient and necessary conditions for the controllability of those systems are established. The existence of optimal controls for the systems is given. Finally, two examples are provided to show the application of our results.

关键词： controllability optimality neutral equations different fractional orders

SOLVABILITY OF AN IMPLICIT FRACTIONAL INTEGRAL EQUATION VIA A MEASURE OF NONCOMPACTNESS ARGUMENT

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Acta Mathematica Scientia 2017年第1期37卷 195-204页

作者： juan J.nieto Bessem SAMET Facultade de Matemáticas Universidade de Santiago de CompostelaSantiago de Compostela 15782Spain Faculty of Science King Abdulaziz UniversityJeddah 21589Saudi Arabia Department of Mathematics College of ScienceKing Saud UniversityP.O.Box 2455Riyadh 11451Saudi Arabia

In this paper,we study the existence of solutions to an implicit functional equation involving a fractional integral with respect to a certain function,which generalizes the Riemann-Liouville fractional integral and the Hadaniard fractional *** establish an existence result to such kind of equations using a generalized version of Darbo＇s theorem associated to a certain measure of *** examples are presented.

关键词： umplicit fractional integral equation measure of noncompactness Darbo'stheorem

Cosmological Model in Four Time and Four Space Dimensions

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Journal of Applied Mathematics and Physics 2024年第3期12卷 829-840页

作者： juan antonio nieto Facultad de Ciencias Físico-Matemáticas de la Universidad Autónoma de Sinaloa Culiacán Sinaloa México

We develop a cosmological model in a physical background scenario of four time and four space dimensions ((4+4)-dimensions or (4+4)-universe). We show that in this framework the (1+3)-universe is deeply connected with the (3+1)-universe. We argue that this means that in the (4+4)-universe there exists a duality relation between the (1+3)-universe and the (3+1)-universe.

关键词： Cosmological Model (4+4)-Dimensions Duality Symmetry

Some Mathematical and Physical Remarks on Surreal Numbers

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Journal of Modern Physics 2016年第15期7卷 2164-2176页

作者： juan antonio nieto Facultad de Ciencias Fsico-Matemáticas de la Universidad Autónoma de Sinaloa Culiacán México

We make a number of observations on Conway surreal number theory which may be useful, for further developments, in both mathematics and theoretical physics. In particular, we argue that the concepts of surreal numbers and matroids can be linked. Moreover, we established a relation between the Gonshor approach on surreal numbers and tensors. We also comment about the possibility to connect surreal numbers with supersymmetry. In addition, we comment about possible relation between surreal numbers and fractal theory. Finally, we argue that the surreal structure may provide a different mathematical tool in the understanding of singularities in both high energy physics and gravitation.

关键词： Surreal Numbers Supersymmetry Cosmology

Zigbee/Google Earth based assisted driving system in mining

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Mining Science and Technology 2009年第5期19卷 626-630页

作者： SUN En-ji nieto antonio Department of Mining and Mineral Engineering University of Science and Technology Beijing Beijing 100083 China Department of Energy and Mineral Engineering Penn State University PA 16802 USA

The Assisted Driving System (ADS) for haul trucks operating in surface mining and construction sites is to reduce accidents related to low visibility conditions. This system is based on the GPS, Zigbee, and the Google-Earth engine as the graphic interface and mine-mapping server. The system has the capability to pin-point and track vehicles in real time using a 3D interface, which is based on user-based AutoCAD mine maps using the Google-Earth graphics interface. All equipped vehicles are shown in a 3D mine map stored in a local server through a wireless network. When low visibility conditions are present, the system indicates available exit/escape routes for driver safety. The ADS potentially increases reliability and reduces uncertainty in open pit mining operations.

关键词： 3D simulation GPS mining assisted driving system Google Earth

Advances in spray products for skin regeneration

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Bioactive Materials 2022年第10期7卷 187-203页

作者： Paula Pleguezuelos-Beltran Patricia Galvez-Martín Daniel nieto-Garcí juan antonio Marchal Elena Lopez-Ruiz Biopathology and Regenerative Medicine Institute(IBIMER) Centre for Biomedical Research(CIBM)University of GranadaGranadaSpain Department of Human Anatomy and Embryology Faculty of MedicineUniversity of GranadaGranadaSpain BioFab i3D Lab-Biofabrication and 3D(bio)printing Laboratory GranadaSpain Excellence Research Unit“Modeling Nature”(MNat) University of GranadaGranadaSpain Biosanitary Research Institute of Granada(ibs.GRANADA) University Hospitals of Granada-University of GranadaGranadaSpain R&D Human Health Bioib´erica S.A.UBarcelonaSpain Department of Pharmacy and Pharmaceutical Technology Faculty of PharmacyUniversity of GranadaGranadaSpain Complex Tissue Regeneration Department MERLN Institute for Technology Inspired Regenerative MedicineUniversiteitssingel 406229ER Maastrichtthe Netherlands Department of Health Sciences University of Ja´enJa´enSpain

To date,skin wounds are still an issue for healthcare *** numerous approaches have been developed over the years for skin regeneration,recent advances in regenerative medicine offer very promising strategies for the fabrication of artificial skin substitutes,including 3D bioprinting,electrospinning or spraying,among *** particular,skin sprays are an innovative technique still under clinical evaluation that show great potential for the delivery of cells and hydrogels to treat acute and chronic *** sprays present significant advantages compared to conventional treatments for wound healing,such as the facility of application,the possibility to treat large wound areas,or the homogeneous distribution of the sprayed *** this article,we review the latest advances in this technology,giving a detailed description of investigational and currently commercially available acellular and cellular skin spray products,used for a variety of diseases and applying different experimental ***,as skin sprays products are subjected to different classifications,we also explain the regulatory pathways for their commercialization and include the main clinical trials for different skin diseases and their treatment ***,we argue and suggest possible future trends for the biotechnology of skin sprays for a better use in clinical dermatology.

关键词： Skin Spray Tissue engineering Fibrin Hydrogel

Existence and Uniqueness of Fixed Point in Partially Ordered Sets and Applications to Ordinary Differential Equations

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Acta Mathematica Sinica,English Series 2007年第12期23卷 2205-2212页

作者： juan J.nieto RosanaRODRGUEZ-LPEZ Departamento de Análisis Matemático Facultad de MatemáticasUniversidad de Santiago de Compostela

We prove some fixed point theorems in partially ordered sets, providing an extension of the Banach contractive mapping theorem. Having studied previously the nondecreasing case, we consider in this paper nonincreasing mappings as well as non monotone mappings. We also present some applications to first-order ordinary differential equations with periodic boundary conditions, proving the existence of a unique solution admitting the existence of a lower solution.

关键词： fixed point partially ordered set first-order differential equation lower and upper solutions

EXISTENCE AND UNIQUENESS OF SOLUTIONS FOR NONLINEAR FRACTIONAL DIFFERENTIAL EQUATIONS WITH NON-SEPARATED TYPE INTEGRAL BOUNDARY CONDITIONS

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Acta Mathematica Scientia 2011年第6期31卷 2122-2130页

作者： Bashir Ahmad juan J. nieto Ahmed Alsaedi Department of Mathematics Faculty of ScienceKing Abdulaziz University Departamento de Anlisis Matemtico Facultad de MatemticasUniversidad de Santiago de Compostela

In this paper, we study a boundary value problem of nonlinear fractional dif- ferential equations of order q （1 〈 q 〈 2） with non-separated integral boundary conditions. Some new existence and uniqueness results are obtained by using some standard fixed point theorems and Leray-Schauder degree theory. Some illustrative examples are also presented. We extend previous results even in the integer case q = 2.

关键词： fractional differential equations non-separated integral boundary conditions contraction principle Krasnoselskii's fixed point theorem LeraySchauder degree