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CLT Fabricated with Gmelina arborea and Tectona grandis Wood from Fast-Growth Forest Plantations: Physical and Mechanical Properties

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Journal of Renewable Materials 2022年第1期10卷 1-17页

作者： Freddy Munoz Carolina Tenorio roger moya Angel Navarro-Mora Escuela de Ingenieria Forestal Instituto Tecnologico de Costa RicaCartago159-7050Costa Rica Escuela de Ingenieria en Construccion Instituto Tecnologico de Costa RicaCartago159-7050Costa Rica

Fabrication and use of Cross Laminated Timber(CLT)using tropical woods is still limited at *** objective of the present study aims to determine the possibility of using CLT panels of 3 and 5 layers,fabricated withTectona grandis and Gmelina arborea wood using adhesive of isocyanate polymer emulsion system catalyzed with polymeric ***,water absorption,density,flexure test,compression and glue-line shear were evaluated using ANSI/APA PRG320-2012 ASTM D198 and ASTM D4761 *** results showed that CLT panels of *** presented higher values of density,less water absorption and lower delamination,with no evident differences between the CLT of 3 and 5 *** high density of *** resulted in higher values of the mechanical *** flatwise and edgewise flexure tests in 5-layer CLT panels of both species pre-sented higher values of bending stiffness compared to those of 3-layer CLT *** the bending stress values in 3-layer CLT panels were higher than for 5-layer CLT *** for shear stress in bending flatwise,in both species,3-layer CLT surpassed 5-layer CLT panels,but in the edgewise test no differences were *** MOE and Fc in the compression test were superior in relation to the edgewise *** and Fc in compres-sion flatwise in 3-layer CLT was greater than in 5-layer CLT in both species,but edgewise these values were higher in 5-layer CLT *** most common failures were stress and delamination in the flexure test,whereas in the compression test these were:shearing,splitting and *** the glue-line shear test no differences were observed between CLT panels of 3 and 5 layers for both species.

关键词： Structural elements sustainable material building material tropical wood wood of plantation

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Development of heartwood,sapwood,bark,pith and specific gravity of teak(Tectona grandis)in fast-growing plantations in Costa Rica

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Journal of Forestry Research 2020年第2期31卷 667-676页

作者： Alexander Berrocal Johana Gaitan-Alvarez roger moya David Fernandez-Solis Edgar Ortiz-Malavassi Instituto Tecnologico de Costa Rica Escuela de Ingenieria ForestalCartago Apartado 159-7050Costa Rica

To elucidate the development of heartwood,bark,sapwood,pith and specific gravity of wood in fastgrowing teak(Tectona grandis)plantations in Costa Rica,we sampled three trees in each of 55 plantations and modelled each variable with age,site and different tree *** and stand density of plantations were significant correlated with stem diameter at breast height and total height of the *** of heartwood was initiated at the age of 4-year-old and increased in direct proportion with *** age of plantation had a significant relationship with stem diameter at breast height,heartwood percentage,sapwood thickness,sapwood percentage,percentage of bark,pith diameter and percentage,and specify *** model for these tree parameters was model with these parameters as dependent variable and in relation to age as independent variable.

关键词： Teak Growth Tree morphology parameters Morphology Tree development

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Functions of nuclear factor Y in nervous system development,function and health

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Neural Regeneration Research 2025年第10期20卷 2887-2894页

作者： Pedro Moreira roger Pocock Development and Stem Cells Program Monash Biomedicine Discovery Institute and Department of Anatomy and Developmental BiologyMonash UniversityMelbourneVICAustralia

Nuclear factor Y is a ubiquitous heterotrimeric transcription factor complex conserved across eukaryotes that binds to CCAAT boxes,one of the most common motifs found in gene promoters and *** the last 30 years,research has revealed that the nuclear factor Y complex controls many aspects of brain development,including differentiation,axon guidance,homeostasis,disease,and most recently ***,a complete understanding of transcriptional regulatory networks,including how the nuclear factor Y complex binds to specific CCAAT boxes to perform its function remains *** this review,we explore the nuclear factor Y complex’s role and mode of action during brain development,as well as how genomic technologies may expand understanding of this key regulator of gene expression.

关键词： axon guidance CCAAT boxes neuronal degeneration neuronal differentiation neuronal regeneration nuclear factor Y complex transcription factor transcriptional regulation

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Delayed Teleoperation with Force Feedback of a Humanoid Robot

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International Journal of Automation and computing 2021年第4期18卷 605-618页

作者： Viviana moya Emanuel Slawinski Vicente Mut Institute of Automation National University of San JuanSan Martin 5400Argentina

Teleoperation systems allow the extension of human capabilities to remote-control devices by providing the operator with conditions similar to those at the remote site through a communication channel that sends information from one site to the other. This article aims to present an analysis of the benefits of force feedback applied to the bilateral teleoperation of a humanoid robot with timevarying delay. As a control scheme, we link adaptive inverse dynamics compensation, balance control, and P+d like controllers. Finally,a test is performed where an operator simultaneously handles the locomotion(forward velocity and turn angle) and arm of a simulated 3D humanoid robot to do a pick-and-place task using two master devices with force feedback, where indexes such as time to complete the task, coordination errors, path tracking error, and percentage of successful tests are reported for different time-delays. We conclude with the results achieved.

关键词： Humanoid robot bilateral teleoperation time delay force feedback walking manipulation

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A hot future for cool materials

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Frontiers in Energy 2023年第4期17卷 447-449页

作者： Xavier moya Neil D.MATHUR Department of Materials Science University of CambridgeCambridge CB3 0FSUK

The ewidespreadneed to pump heat necessitates simprovements that will increase energy efficiency and,more generally,reduce eenvironmental *** discussed at the recent Calorics 2022 Conference,heat-pump devices based on... 详细信息

关键词： magnetocaloric electrocaloric mechanoca-loric elastocaloric barocaloric

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OTX2 signaling in retinal dysfunction,degeneration and regeneration

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Neural Regeneration Research 2021年第10期16卷 2002-2003页

作者： Kenneth.L.moya Raoul Torero Ibad Centre for Interdisciplinary Research in Biology(CIRB) Collège de FranceCNRS UMR 7241INSERM U1050Labex MemoLifePSL Research UniversityParisFrance(Moya KLIbad RT)Univ.LilleCNRSUMR 8523-PhLAM-Physique des Lasers Atomes et MoléculesF-59000 LilleFrance(Ibad RT)

The protein OTX2 in the retina is necessary for the maintenance of normal physiologic processes,and may be a promising therapeutic agent for some ophthalmic *** this Perspective,we first shortly introduce the organization of the retina and the importance of OTX2 *** then present an example of reduced OTX2 activity in the developed retina associated with structural and functional *** next show that homeoproteins can have neuroprotective *** finally review several clear examples of OTX2 non-cell autonomous activity in the retina and the effects of diminishing or providing extracellular OTX2.

关键词： expression. functions. agent

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Long-Time Turbulence Model Deduced from the Navier-Stokes Equations

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Chinese Annals of Mathematics,Series B 2015年第5期36卷 883-894页

作者： roger LEWANDOWSKI IRMAR and Fluminance Team University of Rennes 1 and INRIA Campus Beaulieu

The author shows the existence of long-time averages to turbulent solutions of the Navier-Stokes equations and determines the equations satisfied by them, involving a Reynolds stress that is shown to be dissipative.

关键词： Navier-Stokes equations Weak solutions Turbulence modeling Reynolds stress

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Avian succession along ecological gradients： Insight from species-poor and species-rich communities of Sylvia warblers

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Current Zoology 2011年第3期57卷 307-317页

作者： Alban GUILLAUMET roger PRODON EPHE CEFE-CNRS UMR 5175 1919 route de Mende 34293 Montpellier cedex 5 France Department of Wildlife Fisheries & Aquaculture Mail Stop 9690 Mississippi State University Mississippi MS 39762 USA

The mechanisms responsible for species replacement during ecological successions is a long-standing and open debate. In this study, we examined the distribution of the Sardinian warbler Sylvia melanocephala along two grassland-to-forest gradients, one in a high-diversity area （Albera-Aspres chain in Catalonia： eight Sylvia warbler species） and one in a low-diversity area （Mount Hymittos in Greece： four species）. In Catalonia, distribution models suggested that the apparent exclusion of S. melanocephala from the open and forest ends of the gradient may be explained entirely by the preference of S. melanocephala for mid-successional shrublands. However, a joint analysis of both data sets revealed that： 1） S. melanocephala was more evenly dis- tributed along the vegetation gradient in Greece, suggesting ecological release in the low-diversity area; and 2） a distribution model assuming interspecific competition （based on the distribution of Sylvia species showing a negative co-occurrence pattern with S. melanocephala） had a significantly higher predictive ability than a distribution model based on habitat variables alone. Our study supports the view that species turnover along ecological gradients generally results from a combination of intrinsic preferences and interspecific competition [Current Zoology 57 （3）： 307-317, 2011].

关键词： Avian succession Cross-validation Diffuse competition Ecological release GLM Habitat selection Nichewidening Species distribution model

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OTX2 stimulates adult retinal ganglion cell regeneration

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Neural Regeneration Research 2022年第3期17卷 690-696页

作者： Raoul Torero Ibad Nicole Quenech’du Alain Prochiantz Kenneth L.moya Centre for Interdisciplinary Research in Biology(CIRB) Collége de FranceCNRS UMR 7241INSERM U1050Labex MemoLifeParis Sciences et Lettres Research UniversityParisFrance

Retinal ganglion cell(RGC) axons provide the only link between the light sensitive and photon transducing neural retina and visual centers of the *** axon degeneration occurs in a number of blinding diseases and the ability to stimulate axon regeneration from surviving ganglion cells could provide the anatomic substrate for restoration of ***2 is a homeoprotein transcription factor expressed in the retina and previous studies showed that,in response to stress,exogenous OTX2 increases the in vitro and in vivo survival of *** we examined and quantified the effects of OTX2 on adult RGC axon regeneration in vitro and in *** results show that exogenous OTX2 stimulates the regrowth of axons from RGCs in cultures of dissociated adult retinal cells and from explants of adult retinal tissue and that RGCs respond directly to OTX2 as regrowth is observed in cultures of purified adult rat ***,after nerve crush in vivo,we observed a positive effect of OTX2 on the number of regenerating axons up to the optic chiasm within 14 days post crush and a very modest level of acuity absent in control *** effect of OTX2 on RGC survival and regeneration is of potential interest for degenerative diseases affecting this cell *** animal procedures were approved by the local "Comié d'éιthique en expérimentation animale n°59" and authorization n° 00702.01 delivered March 28,2014 by the French "Ministére de l'enseignement supérieur et de la recherche".

关键词： axon regeneration dissociated retinal culture GAP-43 homeoprotein optic nerve crush OTX2 retinal explants retinal ganglion cell

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A Relative Theory for Leibniz n-Algebras

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Algebra Colloquium 2016年第2期23卷 219-226页

作者： Guy roger Biyogmam Department of Mathematics Southwestern Oklahoma State University 100 Campus Drive Weatherford OK 73096 USA

In this paper we show that for an n-Filippov algebra g, the tensor power g ^n-1 is endowed with a structure of anti-symmetric co-representation over the Leibniz algebra g ^n-1. This co-representation is used to define some relative theories for Leibniz n-algebras with n 〉 2 and obtain exact sequences relating them. As a result, we construct a spectral sequence for the Leibniz homology of Filippov algebras.

关键词： Leibniz n-algebras Filippov algebras Leibniz homology

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