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Isotropic compression behavior of granular assembly with non-spherical particles by X-ray micro-computed tomography and discrete element modeling

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Journal of Rock Mechanics and Geotechnical Engineering 2021年第5期13卷 972-984页

作者： Nan Zhang Ahmadreza Hedayat Shaoyang Han Runlin Yang Héctor Gelber Bolaños Sosa Juan Joségonzález Cárdenas Guido Edgard SalasÁlvarez Department of Civil and Environmental Engineering Colorado School of Mines1500 Illinois St.GoldenCO80401USA Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering Hohai UniversityNanjing210098China School of Civil and Resource Engineering University of Science and Technology BeijingBeijing100083China Universidad Nacional de San Agustín de Arequipa ArequipaPeru

The particle morphological properties,such as sphericity,concavity and convexity,of a granular assembly significantly affect its macroscopic and microscopic compressive behaviors under isotropic loading ***,limited studies on investigating the microscopic behavior of the granular assembly with real particle shapes under isotropic compression were *** this study,X-ray computed tomography(mCT)and discrete element modeling(DEM)were utilized to investigate isotropic compression behavior of the granular assembly with regard to the particle morphological properties,such as particle sphericity,concavity and interparticle *** mCT was first used to extract the particle morphological parameters and then the DEM was utilized to numerically investigate the influences of the particle morphological properties on the isotropic compression *** image reconstruction from mCT images indicated that the presented particle quantification algorithm was robust,and the presented microscopic analysis via the DEM simulation demonstrated that the particle surface concavity significantly affected the isotropic compression *** observations of the particle connectivity and local void ratio distribution also provided insights into the granular assembly under isotropic *** found that the particle concavity and interparticle friction influenced the most of the isotropic compression behavior of the granular assemblies.

关键词： X-ray computed tomography(mCT) Discrete element modeling(DEM) Isotropic compression Particle surface curvature Particle morphology

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Hepatogenous diabetes: Is it a neglected condition in chronic liver disease?

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World Journal of Gastroenterology 2016年第10期22卷 2869-2874页

作者： Diego García-Compeán José Alberto gonzález-gonzález Fernando Javier Lavalle-gonzález Emmanuel Irineo gonzález-Moreno Jesús Zacarías Villarreal-Pérez Héctor Jesús Maldonado-Garza Gastroenterology Service and Department of Internal Medicine University Hospital "Dr. José E. González" and Medical SchoolUniversidad Autónoma de Nuevo León Endocrinology Service and Department of Internal Medicine University Hospital "Dr. José E. González" and Medical SchoolUniversidad Autónoma de Nuevo León

Diabetes mellitus(DM) that occurs because of chronic liver disease(CLD) is known as hepatogenous diabetes(HD). Although the association of diabetes and liver cirrhosis was described forty years ago, it was scarcely studied for long time. Patients suffering from this condition have low frequency of risk factors of type 2 DM. Its incidence is higher in CLD of viral, alcoholic and cryptogenic etiology. Its pathophysiology relates to liver damage, pancreatic dysfunction, interactions between hepatitis C virus(HCV) and glucose metabolism mechanisms and genetic susceptibility. It associates with increased rate of liver complications and hepatocellular carcinoma, and decreased 5-year survival rate. It reduces sustained virological response in HCV infected patients. In spite of these evidences, the American Diabetes Association does not recognize HD. In addition, the impact of glucose control on clinical outcomes of patients has not been evaluated. Treatment of diabetes may be difficult due to liver insufficiency and hepatotoxicity of antidiabetic drugs. Notwithstanding, no therapeutic guidelines have been implemented up to date. In this editorial, authors discuss the reasons why they think that HD may be a neglected pathological condition and call attention to the necessity for more clinical research on different fields of this disease.

关键词： Hepatogenous diabetes Diabetes mellitus Outcomes Therapy Hepatitis C virus Chronic liver disease

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Nodal user’s demand response based on incentive based programs

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Journal of Modern Power Systems and Clean Energy 2017年第1期5卷 79-90页

作者： Nestor gonzález-CABRERA Guillermo GUTIéRREZ-ALCARAZ Instituto Tecnolo´gico Superior de Irapuato Irapuato 36620Mexico Instituto Tecnolo´gico de Morelia Morelia 58120Me´xico

This paper describes a practical approach to identify nodal price compensation payment for nodal consumers willing to reduce their energy consumption(consumers’ demand response). The implementation of a nodal reliability service pricing is based on contingency assessment of N-2 order for transmission lines. A representative annualized demand curve is used to reflect the system’s operation condition by seasons. Such curve is used to access the nodal reliability impact trough a whole year in order to determine back-payments(incentive payment) to users for service interruption. The IEEE_RTS 24 nodes system is used to implement the proposed approach.

关键词： Nodal demand response Demand side management Reliability assessment Incentive based programs(IBP)

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NO-ARBITRAGE SYMMETRIES

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Acta Mathematica Scientia 2022年第4期42卷 1373-1402页

作者： Iván DEGANO Sebastián FERRANDO Alfredo gonzález Departamento de Matemática.Facultad de Ciencias Exactas y Naturales Universidad Nacional de Mar del Plata 7600Argentina Department of Mathematics Ryerson University350 Victoria St.TorontoOntario M5B 2K3Canada

The no-arbitrage property is widely accepted to be a centerpiece of modern financial mathematics and could be considered to be a financial law applicable to a large class of(idealized) *** paper addresses the following basic question:can one characterize the class of transformations that leave the law of no-arbitrage invariant?We provide a geometric formalization of this question in a non probabilistic setting of discrete time-the so-called trajectorial *** paper then characterizes,in a local sense,the no-arbitrage symmetries and illustrates their meaning with a detailed *** context makes the result available to the stochastic setting as a special case.

关键词： No arbitrage symmetry convexity preserving maps non-probabilistic markets

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Modernist heritage and memory politics in Spain:shifting values for the adaptive reuse of Seville’s former police headquarters

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Built Heritage 2023年第4期7卷 55-68页

作者： Plácido gonzález Martínez School of Architecture University of SevilleAvda.Reina Mercedes 241012SevilleSpain College of Architecture and Urban Planning Tongji University1239 Siping RoadShanghai200092China

The political significance of modernist heritage architecture continues to be an unsolved question,particularly its identification and *** Spain,the chronology of modernism stretches through the whole of the Spanish Civil War and Franco’s *** passing of legislation on memory politics in Spain(*** 2007 Law of Historical Memory and the 2022 Law of Democratic Memory)offers a unique opportunity to address this unsolved question by discussing two uncharted heritage debates:namely,the motivations for the heritagisation of modernist architecture in Spain and the challenges in the adaptive reuse of modernist buildings with controversial *** former police headquarters in Seville exemplifies the complexities of both debates and to what extent conflicting views about heritage architecture may determine debates about its *** a documentary review of the heritagisation of Seville’s former police headquarters,a discourse analysis of intervention proposals and press articles and interviews with relevant stakeholders,this study explored how the rise of memory politics in Spain has changed the interpretation of the former police headquarters’significance in the last two decades and influenced the choices for its adaptive reuse.

关键词： Heritagisation Modernism 20th century heritage Memory politics Dark heritage Adaptive reuse

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Maschke Type Theorems for Weak Hopf Quasigroups

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Algebra Colloquium 2020年第2期27卷 213-230页

作者： J.N.Alonso Alvarez J.M.Fernández Vilaboa R.gonzález Rodríguez Departamento de Matematicas Vniversidade de Vigo Campus Universitario Lagoas-MarcosendeE-36280 VigoSpain Departamento de Matematicas Universidade de Santiago de Compostela E-15771 Santiago de CompostelaSpain Departamento de Matematica Aplicada II Universidade de Vigo Campus Universitario Lagoas-MarcosendeE-36310 VigoSpain

In this paper we give necessary and sufficient conditions for a comodule magma over a weak Hopf quasigroup to have a total integral,thus extending the theories developed in the Hopf algebra,weak Hopf algebra and non-associative Hopf algebra *** this result we also deduce a version of Maschke’s theorems for right(H,B)-Hopf triples associated to a weak Hopf quasigroup H and a right H-comodule magma B.

关键词： (weak)Hopf algebra (weak)Hopf quasigroup integral Maschke theorem

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Tribological performance of tributylmethylammonium bis(trifluoromethylsulfonyl)amide as neat lubricant and as an additive in a polar oil

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Friction 2019年第3期7卷 282-288页

作者： Rubén gonzález Diego RAMOS David BLANCO Alfonso FERNáNDEZ-gonzález Jose L.VIESCA Mark HADFIELD Antolin HERNáNDEZ BATTEZ Department of Marine Science and Technology University of OviedoAsturias 33203Spain Department of Construction and Manufacturing Engineering University of OviedoAsturias 33203Spain Department of Physical and analytical Chemistry University of OviedoAsturias 33006Spain Department of Design and Engineering Bournemouth UniversityPoole BH12 5BBUK

The ionic liquid(IL) tributylmethylammonium bis(trifluoromethylsulfonyl)amide([N4441][NTf2]) was used as neat lubricant and as an additive(1.5 wt%) in a polar oil to study its friction and wear reducing *** tests were completed for 90 minutes at room temperature and 100 °C in a reciprocating configuration at loads of 30 and 70 N,10 Hz-frequency,and 4 mm stroke *** volume was measured by confocal microscopy and the surface-IL interaction determined by *** main findings were that neat IL showed the best tribological behavior;the IL-containing mixture behaved similar to the base oil regarding friction,however outperformed the antiwear behavior of the base oil under higher temperature;surface-IL chemical interaction was found mainly at 100 °C.

关键词： ionic liquid additive friction wear polar oil

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Deposition of carbon nanotubes onto glass fibers using ultrasound standing waves

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Frontiers of Materials Science 2021年第3期15卷 471-475页

作者： Julio Alejandro RODRÍGUEZ-gonzÁlez Carlos RUBIO-gonzÁlez Alfonso PÉREZ-SÁNCHEZ Centro de Ingeniería y Desarrollo Industrial Departamento de EnergíaAv.Pie de la Cuesta#702Col.Desarrollo San PabloC.P.76125QuerétaroQroMexico

Carbon nanotubes(CNTs)are special types of carbon nanostructures with exceptional physical and mechanical properties such as high elastic modulus,high electrical and thermal conductivities,as well as high surface area and large aspect ratios[1].Given their tubular structure and size,CNTs are conceptualized as one-dimensional nanostructures with a crystalline structure of carbon sp2 hybridization formed by carbon–carbon covalent bonds[1].

关键词： carbon fibers exceptional

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Synthesis and applications of lanthanoid complexes of pentadentate and hexadentate N_(5) and N_(6) macrocycles:A review

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Journal of Rare Earths 2024年第1期42卷 1-15,I0001页

作者： Julio Corredoira-Vázquez Cristina gonzález-Barreira Paula Oreiro-Martínez ana M.García-Deibe Jesús Sanmartín-Matalobos Matilde Fondo Departamento de Química Inorganica Facultade de QuímicaUniversidade de Santiago de CompostelaCampus Vida15782Santiago de CompostelaSpain Phantom-g CICECO-Aveiro Institute of MaterialsDepartment of PhysicsUniversity of Aveiro3810-193AveiroPortugal Institute of Materials(iMATUS) Universidade de Santiago de Compostela15782Santiago de CompostelaSpain

In this paper,the lanthanoid complexes of N_(5) and N_(6) macrocycle ligands,without pendant arms or additional heteroatoms,are *** review covers the period from 2015 to the current date,since in 2014 Schiff base macrocyclic ligands incorporating the pyridine moiety,and their complexes,were revised,and in 2015 the chemistry of pentaaza macrocycle ligands with rare earth metals was also *** and phthalocyanine ligands are not included in this review,which primarily focuses on complexes with Schiff bases and amines without pendant arms or any additional donor other than *** synthetic methods,structural characterization,based on single X-ray crystal data,and properties of the lanthanoid complexes,with special attention to magneto-structural correlations,are presented herein.

关键词： Lanthanoid N_(5),N_(6)macrocycle Coordination chemistry Chirality Biological activity Molecule magnet

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Morphological and biochemical effects of weekend alcohol consumption in rats: Role of concentration and gender

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World Journal of Hepatology 2018年第2期10卷 297-307页

作者： José A Morales-gonzález María de Lourdes Sernas-Morales ángel Morales-gonzález Laura Ligía gonzález-López Eduardo Osiris Madrigal-Santillán Nancy Vargas-Mendoza Tomás Alejandro Fregoso-Aguilar Liliana Anguiano-Robledo Eduardo Madrigal-Bujaidar Isela álvarez-gonzález Germán Chamorro-Cevallos Laboratorio de Medicina de Conservación Escuela Superior de Medicina Instituto Politécnico Nacional Escuela Superior de Cómputo Instituto Politécnico Nacional área Académica de Nutrición ICSa Universidad Autónoma del Estado de Hidalgo Depto. de Fisiología Laboratorio de Hormonas y Conducta ENCB campus Zacatenco Instituto Politécnico Nacional Laboratorio de Farmacología Molecular Sección de Estudios de Posgrado e Investigación Escuela Superior de Medicina-Instituto Politécnico Nacional Laboratorio de Genética Escuela Nacional de Ciencias Biológicas IPN Departamento de Farmacia Escuela Nacional de Ciencias Biológicas Instituto Politécnico Nacional

AIM To examine the association between weekend alcohol consumption and the biochemical and histological alterations at two different concentrations of alcohol in both genders in *** Wistar rats weighing 170-200 g were divided into groups as follows:(1) Control groups; and(2) weekend alcohol-consumption group: 2 d/weekly per 12 wk, at two different concentrations:(1) Group of males or females with a consumption of a solution of alcohol at 40%; and(2) group of males or females with a consumption of a solution of alcohol at 5%. At the end of the experiment, serum and liver samples were obtained. The following enzymes and metabolites were determined in serum: Alanine Aminotransferase(ALT), Aspartate Aminotransferase(AST), Lactate Dehydrogenase, and Gamma-Glutamyltransferase, and glucose, triglycerides, cholesterol, bilirubin, and albumin. Liver samples from each group were employed to analyze morphological abnormalities by light *** In all of the weekend alcohol-consumption groups, AST activity presented a significant, 10-fold rise. Regarding ALT activity, the groups with weekend alcohol consumption presented a significant increase that was six times greater. Bilirubin levels increased significantly in both groups of females. We observed a significant increase in the parameters of fatty change and inflammation due to weekend alcohol consumption. Only the group of females that consumed alcohol at 40% presented slight hepatocel ular disorganization CONCLUSION The results obtained herein provide solid evidence that weekend alcohol consumption gives rise to liver damage, demonstrated by biochemical and histological alterations, first manifested acutely, and prolonged weekend alcohol consumption can cause greater, irreversible damage.

关键词： Weekend alcohol consumption Liver morphology Transaminases Damage

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