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Shallow water equations for power law and Bingham fluids Dedicated to the NSFC-CNRS Chinese-French summer institute on fluid mechanics in 2010

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Science China Mathematics 2012年第2期55卷 277-283页

作者： FERNANDEZ-nieto Enrique D. NOBLE Pascal VILA Jean-Paul Departamento de Matemdtica Aplicada I Universidad de Sevilla 41012 Sevilla Spain Universite de Lyon Universitd Lyon1 Institut Camille Jordan UMR CNRS 520843 blvd du 11 novembre 1918 F-69622 ViUeurbanne Cedex France Institut de Mathdmatiques de Toulouse UMR CNRS 5219 INSA de Toulouse 135 avenue de Rangueil 31077 Toulouse Cedex 4 France

In this note, we provide a consistant thin layer theory for power law and Bingham incompressible fluids flowing down an inclined plane under the effect of gravity. The derivation of such equations is based on formal asymptotic expansions of solutions of Cauchy momentum equations in the shallow water scaling and in the neighbourhood of steady solutions so that we can close the average equations on the fluid height h and the total discharge rate q.

关键词： shallow water equations asymptotic analysis non-Newtonian fluids

Hydrogels for neuroprotection and functional rewiring: a new era for brain engineering

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Neural Regeneration Research 2020年第5期15卷 783-789页

作者： Rocío Fernández-Serra Rebeca Gallego Paloma Lozano Daniel González-nieto Center for Biomedical Technology Universidad Politécnica de Madrid. MadridSpain Departamento de Tecnología Fotónica y Bioingeniería ETSI TelecomunicacionesUniversidad Politécnica de MadridMadridSpain Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN) MadridSpain

The neurological devastation of neurodegenerative and cerebrovascular diseases reinforces our perseverance to find advanced treatments to deal with these fatal ***-performance preclinical results have failed at clinical level,as it has been the case for a wide variety of neuroprotective agents and cell-based therapies employed to treat high prevalent brain pathologies such as stroke,Alzheimer’s and Parkinson’s *** unquestionable reality is the current absence of effective therapies to neuroprotect the brain,to arrest neurodegeneration and rewire the impaired brain *** of the problem might arise from the lack of adequate in vitro and in vivo models and that most of the underlying pathophysiological mechanisms are not yet *** contributing factor is the lack of efficient systems to sustain drug release at therapeutic concentrations and enhance the survival and function of grafted cells in transplantation *** medical applications the use of biomaterials of different compositions and formats has experienced a boom in the last *** the greater complexity of central nervous system has probably conditioned their extensive use with respect to other organs,the number of biomaterials-based applications to treat the injured brain or in the process of being damaged has grown ***-based biomaterials have constituted a turning point in the treatment of cerebral disorders using a new form of advanced *** show mechanical properties in the range of cerebral tissue resulting very suitable for local implantation of drugs and *** is also possible to fabricate three-dimensional hydrogel constructs with adaptable mesh size to facilitate axonal guidance and *** this article,we review the current trends in this area highlighting the positive impact of hydrogel-based biomaterials over the exhaustive control of drug delivery,cell engraftment and axonal reinnervation in brain p

关键词： advanced therapies Alzheimer’s disease biomaterials brain hydrogels neurological diseases Parkinson’s disease polymers stroke

Mathematical analysis of Hepatitis C Virus infection model in the framework of non-local and non-singular kernel fractionalderivative

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International Journal of Biomathematics 2023年第1期16卷 77-96页

作者： Ibrahim Slimane Ghazala Nazir Juan J.nieto Faheem Yaqoob Faculty of Eaact Sciences and Informatics UMABAbdelhamid IbnBadis P.O.Bor 227 University of Mostaganem 27000Mostaganem Algeria Department of Mathematics Universityof Malakand KhyberPakhtunkhawa Pakistan ghazalanazir732@*** Department of Statistics Mathematical Analysis and Optimization Galician Center for Mathematical Research and Technology University of Santiago de Compostela 15782 Santiago de Compostela Spain Department of Computer Sciences and Information Technology University of Poonch Rawalakot Azad Kashmir Pakistan

In this paper,we study a mathematical model of Hepatitis C Virus(HCV)*** present a compartmental mathematical model involving healthy hepatocytes,infected hepatocytes,non-activated dendritic cells,activated dendritic cells and cytotoxic T *** derivative used is of non-local fractional order and with non-singular *** existence and uniqueness of the system is proven and its stability is ***,by applying the Laplace Adomian decomposition method for the fractional derivative,we present the semi-analytical solution of the ***,some numerical simulations are performed for concrete values of the parameters and several graphs are plotted to reveal the qualitative properties of the solutions.

关键词： Hepatitis C virus(HCV) infection dendritic cells(DC) cytotoxic T lymphocytes(CTL) Atangana-Baleanu(AB) Laplace Adomians decomposition method(LADM).

Permanence and global attractivity of stage-structured predator-prey model with continuous harvesting on predator and impulsive stocking on prey

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Applied Mathematics and Mechanics(English Edition) 2008年第5期29卷 653-663页

作者：焦建军陈兰荪 Juan J.nieto Torres Angela School of Mathematics and Statistics Guizhou College of Finance and Economics Department of Applied Mathematics Dalian University of Technology Department of Mathematical Analysis Faculty of MathematicsUniversity of Santiago de Compostela15782 Santiago de Compostela Spain Department of Psychiatry Radiology and Public Health Faculty of Medicine University of Santiago de CompostelaSpain

We investigate a stage-structured delayed predator-prey model with impulsive stocking on prey and continuous harvesting on predator. According to the fact of biological resource management, we improve the assumption of a predator-prey model with stage structure for predator population that each individual predator has the same ability to capture prey. It is assumed that the immature and mature individuals of the predator population are divided by a fixed age, and immature predator population does not have the ability to attach prey. Sufficient conditions are obtained, which guarantee the global attractivity of predator-extinction periodic solution and the permanence of the system. Our results show that the behavior of impulsive stocking on prey plays an important role for the permanence of the system, and provide tactical basis for the biological resource management. Numerical analysis is presented to illuminate the dynamics of the system.

关键词： stage-structured, impulsive stocking continuous harvesting global attractivity permanence

Government Data Openness and Coverage. How do They Affect Trust in European Countries?

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Journal of Data and Information Science 2021年第1期6卷 139-153页

作者： Nicolás Gonzálvez-Gallego Laura nieto-Torrejón San Antonio Catholic University of Murcia Faculty of Law and Business AdministrationAvda.de los Jerónimos135Murcia 30107Spain

Purpose: This paper aims to assess if the extent of openness and the coverage of data sets released by European governments have a significant impact on citizen trust in public ***/methodology/approach: Data for openness and coverage have been collected from the Open Data Inventory 2018(ODIN), by Open Data Watch;institutional trust is built up as a formative construct based on the European Social Survey(ESS), Round 9. The relations between the open government data features and trust have been tested on the basis of structural equation modelling(SEM).Findings: The paper reveals that as European governments improve data openness, disaggregation, and time coverage, people tend to trust them more. However, the size of the effect is still small and, comparatively, data coverage effect on citizens' confidence is more than twice than the impact of *** limitations: This paper analyzes the causal effect of Open Government Data(OGD) features captured in a certain moment of time. In upcoming years, as OGD is implemented and a more consistent effect on people is expected, time series analysis will provide with a deeper *** implications: Public officers should continue working in the development of a technological framework that contributes to make OGD truly open. They should improve the added value of the increasing amount of open data currently available in order to boost internal and external innovations valuable both for public agencies and ***/value: In a field of knowledge with little quantitative empirical evidence, this paper provides updated support for the positive effect of OGD strategies and it also points out areas of improvement in terms of the value that citizens can get from OGD coverage and openness.

关键词： Open government data Open data Trust Public policy

Electron states and electron Raman scattering in semiconductor double cylindrical quantum well wire

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Chinese Physics B 2016年第11期25卷 453-460页

作者： M Munguía-Rodríguez Ri Betancourt-Riera Re Betancourt-Riera R Riera J M nieto Jalil Departamento de Investigación en Física Universidad de Sonora Apartado Postal 5-88 83190 Hermosillo Sonora México Instituto Tecnológico de Hermosillo. Avenida Tecnologico S/N Col. Sahuaro 83170 Hermosillo Sonora México Tecnológico de Monterrey-Campus Sonora Norte. Bulevar Enrique Mazón Lopez No. 965 83000 Hermosillo Sonora México

The differential cross section for an electron Raman scattering process in a semiconductor GaAs/AlGaAs double quantum well wire is calculated,and expressions for the electronic states are *** system is modeled by considering T = 0 K and also with a single parabolic conduction band,which is split into a subband system due to the *** gain and differential cross-section for an electron Raman scattering process are *** addition,the emission spectra for several scattering configurations are discussed,and interpretations of the singularities found in the spectra are *** electron Raman scattering studied here can be used to provide direct information about the efficiency of the lasers.

关键词： Electron cylindrical confinement conduction radius decoupling AlGaAs parabolic modeled resonant

Electron Raman scattering in semiconductor quantum well wire of cylindrical ring geometry

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Chinese Physics B 2015年第11期24卷 442-447页

作者： Re.Betancourt-Riera Ri.Betancourt-Riera J.M.nieto Jalil R.Riera Instituto Tecnol ógico de Hermosillo.Avenida Tecnol ógico S/N Col.Sahuaro Departamento de Investigaci ón en Física Universidad de Sonora Tecnol ógico de Monterrey-Campus Sonora Norte.Bulevar Enrique Mazón López No.965

We study the electron states and the differential cross section for an electron Raman scattering process in a semi- conductor quantum well wire of cylindrical ring geometry. The electron Raman scattering developed here can be used to provide direct information about the electron band structures of these confinement systems. We assume that the system grows in a GaAs/Al0.35Ga0.65As matrix. The system is modeled by considering T = 0 K and also a single parabolic con- duction band, which is split into a sub-band system due to the confinement. The emission spectra are discussed for different scattering configurations, and the selection rules for the processes are also studied. Singularities in the spectra are found and interpreted.

关键词： electron states Raman scattering selection rules quantum well wires

All roads go to Salubrinal:endoplasmic reticulum stress,neuroprotection and glial scar formation

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Neural Regeneration Research 2015年第12期10卷 1926-1927页

作者： Lorenzo Romero-Ramírez Manuel nieto-Sampedro M.Asunción Barreda-Manso Hospital Nacional de Parapléjicos SESCAM Instituto Cajal CSIC

Central nervous system（CNS）injuries caused by cerebrovascular pathologies（e.g.,stroke）or mechanical contusions（e.g.,traumatic brain injury）disrupt the blood-brain barrier（BBB）that protects the CNS microenviron... 详细信息

关键词： ER CNS TGF

Breeding bird density does not drive vocal individuality

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Current Zoology 2012年第5期58卷 765-772页

作者： Daniel T. BLUMSTEIN Douglas R. MCCLAIN Carrie DE JESUS Gustavo ALARCON-nieto The Rocky Mountain Biological Laboratory Box 519 Crested Butte CO 81224 USA Department of Ecology and Evolutionary Biology University of California Los Angeles 621 Charles E. Young Dr. South Los Angeles CA 90095-1606 USA

Many species produce individually specific vocalizations and sociality is a hypothesized driver of such individuality. Previous studies of how social variation influenced individuality focused on colonial or non-colonial avian species, and how so- cial group size influenced individuality in sciurid rodents. Since sociality is an important driver of individuality, we expected that bird species that defend nesting territories in higher density neighborhoods should have more individually-distinctive calls than those that defend nesting territories in lower-density neighborhoods. We used Beecher＇s information statistic to quantify individu- ality, and we examined the relationship between bird density （calculated with point-counts） and vocal individuality on seven spe- cies of passerines. We found non-significant relationships between breeding bird density and vocal individuality whether regres- sions were fitted on species values, or on phylogenetically-independent contrast values. From these results, we infer that while in- dividuality may be explained by social factors, breeding bird density is unlikely to be generally important in driving the evolution of individually-specific vocalizations [Current Zoology 58 （5）： 765-772, 2012].

关键词： Individuality Sociality Birdsong Breeding bird density