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AN IMPLEMENTATION Of THE COLLOCATION METHOD fOR INITIAL VALUE PROBLEMS

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International Journal of Modeling, Simulation, and Scientific Computing 2013年第2期4卷 142-154页

作者： RAfAEL G.CAMPOS fRANCISCO dom´inguez mota facultad de Ciencias fısico-Matematicas Universidad Michoacana 58060 MoreliaMich.Mexico

An implementation of the standard collocation method based on polynomial interpolation is presented in a matrix framework in this *** underlying differentiation matrix can be partitioned to yield a superconvergent implicit multistep-like method to solve the initial value problem *** first-and second-order versions of this method are L-stable.

关键词： IVP ODE collocation differentiation matrix interpolation superconvergence stability

A Derivation of the Entropy-Based Relativistic Smoothed Particle Hydrodynamics by Variational Principle

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Communications in Theoretical Physics 2017年第9期67卷 382-386页

作者： Philipe mota Wei-Xian Chen Wei-Liang Qian Centro Brasileiro de Pesquisas fisicas R J Brazil Escola de Engenharia de Lorena Universidade de Sgo Paulo SP Brazil Instituto de ffsica e Qufmica Universidade Estadual Paulista Jdlio de Mesquita Filho SP Brazil

In this work, a second order smoothed particle hydrodynamics is derived for the study of relativistic heavy ion collisions. The hydrodynamical equation of motion is formulated in terms of the variational principle. In order to describe the fluid of high energy density but of low baryon density, the entropy is taken as the base quantity for the interpolation. The smoothed particle hydrodynamics algorithm employed in this study is of the second order, which guarantees better particle consistency. furthermore, it is shown that the variational principle preserves the translational invariance of the system, and therefore improves the accuracy of the method. A brief discussion on the potential implications of the model in heavy ion physics as well as in general relativity are also presented.

关键词： hydrodynamics SPH method variational principle

Petiveria alliacea Suppresses Airway Inflammation and Allergen-Specific Th2 Responses in Ovalbumin-Sensitized Murine Model of Asthma

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Chinese Journal of Integrative Medicine 2018年第12期24卷 912-919页

作者： Rosa Martha Perez Gutierrez Jose Maria mota flores Natural Products Research Laboratory Higher School of Chemical Engineering and Extractive IndustriesInstituto Politecnico Nacional (IPN) Professional Unit Adolfo Lopez Mateos Av. Instituto Politécnico NacionalS/N

Objective： To examine the effect of metanol extract of Petiveria alliacea （PM） on airway inflammation in a murine model of chronic asthma. Methods： Two-month-old male BALB/c mice （n=6-8/group） were sensitized on days 0 and 14 by intraperitoneal injection of 20μg ovalbumin （OVA）. On day 25, the mice received an airway challenge with OVA （3%, w/v, in phosphate buffered saline）. PM was administered orally by oral gavage to mice at doses of 100, 200 and 400 mg/kg body weight once daily from days 18 to 23. Control mice were orally administered phosphate buffered saline （PBS） to induce a model of asthma. At the end of the test, respiratory reactivity was assayed, the total cell number, interleukin-4 （IL-4）, IL-5, IL-13, tumor necrosis factor-alpha （TNf-α） and reactive oxygen species （ROS） in the bronchoalveolar lavage fluid （BALf） were determined and the levels of serum IgE, intercellular cell adhesion molecule 1 （ICAM-1） and eotoxin were measured. In addition, lung tissue was used to qualify the IL-4, IL-5, IL-13, TNf-α and transforming growth factor beta 1 （TGf-β1）. Histologic examination was performed to observe inflammatory cellular infiltration. Results： The administration of PM in comparison with the OVA-only treated group significantly attenuated the infiltration of eosinophUs and other inflammatory cells （P〈0.01）. Airway resistance （RI） in the OVA-only induced group was significantly higher than that of the PBS control group （P〈0.01） when methacholine was added. TNf-α, IgE, TGf-β1 and cytokine levels IL-4, IL-5, IL-β in the BALf decreased compared to control mice （P〈0.01 or P〈0.05）. PM treatment also inhibited the production of chemokines, eotaxin and ICAM-1 in BALf （P〈0.01）, which improved lung function. Histopathological examination revealed that the sensitized treated PM groups had significant lower in inflammatory scores similar to dexamethasone treatments and the untreated group. Conclusion： Administration of PM could inhibit airway inflammation, regulate cyt

关键词： Petiveria alliacea allergy antiinflammation asthma

Developmental hemostasis in the neonatal period

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World Journal of Pediatrics 2022年第1期18卷 7-15页

作者： Vicente Rey y formoso Ricardo Barreto mota Henrique Soares Neonatology Department(Reference Center for Congenital Heart Diseases) São João University Hospital CenterAlameda Prof.Hernâni Monteiro4200-319PortoPortugal faculty of Medicine Porto UniversityPortoPortugal

Background The hemostatic system is complex and evolves continuously since gestation and well into the adult years,in a process known as“developmental hemostasis.”Data sources A comprehensive review was performed after an extensive literature search on PubMed/MEDLINE concerning developmental hemostasis during the neonatal *** cross references were also *** Although part of a system,each component of the hemostatic system evolves differently,with many displaying both quantitative and qualitative age-related *** leads to drastic disparities between the coagulation system of neonates and both other children’s and adults’,while still maintaining a generally balanced and physiological *** motives behind this process remain to be fully elucidated but may be,at least in part,related to non-hemostatic *** Knowledge regarding“developmental hemostasis”is essential for everyone caring for newborns or even children in general and in this review,we describe each hemostatic system component’s neonatal characteristics and age-related progression as well as explore some of the possible physiological motives behind the process.

关键词： Coagulation factors Developmental hemostasis Hemostasis Newborn Platelets

Trophic niche changes associated with the eradication of invasive mammals in an insular lizard: an assessment using isotopes

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Current Zoology 2022年第2期68卷 211-219页

作者： Sara f.NUNES Mario mota-fERREIRA Marta SAMPAIO Joana ANDRADE Nuno OLIVEIRA Rui REBELO Ricardo ROCHA faculty of Sciences Centre for EcologyEvolution and Environmental ChangesUniversity of LisbonLisbon1749-016Portugal CIBI0-lnBI0 Research Center in Biodiversity and Genetic ResourcesUniversity of PortoVairao4485-661Portugal CIBI0-lnBI0 Research Center in Biodiversity and Genetic ResourcesInstitute of AgronomyUniversity of LisbonLisbon1349-017Portugal Sociedade Portuguesa Para o Estudo das Aves Av.Columbano Bordalo Pinheiro873°AndarLisboa1070-062Portugal

Invasive species are a major threat to island biodiversity,and their eradications have substantially contributed to the conservation of island ***,the consequences of eradications on the trophic ecology of native taxa are largely ***,we used the eradication of invasive black rats Rattus rattus and European rabbits Oryctolagus cuniculus from the Berlenga Island,in the western coast of Portugal,as a whole-ecosystem experiment to investigate the effects of the eradication of invasive mammals on the trophic niche and body dimensions of the island-restricted Berlenga wall lizard Podarcis carbonelli berlengensis over a 2-year *** results suggest an expansion of the isotopic niche and an intensification of the sexual dimorphism of the lizard following mammal ***,we found considerable variability in isotopic niche across the island and detected evidence of sex-specific and season-modulated nutritional requirements of this threatened *** findings support that the eradication of 2 of the planets most problematic invasive vertebrates led to changes in the lizard trophic niche and sexual dimorphism in just 2 *** suggests that the ecological pressuresfor example,prey availability and habitat structureto which lizards are exposed have substantially changed *** study emphasizes the scientific value of island eradications as experiments to address a wide range of ecological questions and adds to the increasing body of evidence supporting substantial conservation gains associated with these restoration interventions.

关键词： food-webs invasive species eradication Oryctolagus cuniculus Podarcis carbonelli berlengensis Rattus rattus

Lignin engineering in forest trees: from gene discovery to field trials

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Plant Communications 2022年第6期3卷 1-25页

作者： Barbara De Meester Ruben Vanholme Thatiane mota Wout Boerjan Ghent University Department of Plant Biotechnology and BioinformaticsTechnologiepark 719052 GhentBelgium VIB Center for Plant Systems Biology Technologiepark 719052 GhentBelgium

Wood is an abundant and renewable feedstock for the production of pulp,fuels,and biobased ***,wood is recalcitrant toward deconstruction into cellulose and simple sugars,mainly because of the presence of lignin,an aromatic polymer that shields cell-wall ***,numerous research efforts have focused on engineering lignin amount and composition to improve wood ***,we focus on results that have been obtained by engineering the lignin biosynthesis and branching pathways in forest trees to reduce cell-wall recalcitrance,including the introduction of exotic lignin *** addition,we draw general conclusions from over 20 years of field trial research with trees engineered to produce less or altered *** discuss possible causes and solutions for the yield penalty that is often associated with lignin engineering in ***,we discuss how conventional and new breeding strategies can be combined to develop elite clones with desired lignin *** conclude this review with priorities for the development of commercially relevant lignin-engineered trees.

关键词： lignin genetic engineering breeding CRISPR field trial forest trees

Growth and nutrient accumulation of Brazil nut trees(Bertholletia excelsa) in agroforestry at different fertilizer levels

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Journal of forestry Research 2015年第2期26卷 347-353页

作者： Gotz Schroth Maria do Socorro Souza da mota Maria Elizabeth de Assis Elias C.P. 513 Santarem PA 68109-971 Brazil Centro de Estudos Avanqados de Promoqao Social e Ambiental Av. Mendonqa Furtado 3979 Santarem PA 68040-050 Brazil Universidade federal do Amazonas Manaus AM 69077-000Brazil

The Brazil nut tree（Bertholletia excelsa） is a frequent component of agroforestry systems in the Amazon because of its adaptation to nutrient-poor upland soils and multiple *** investigated the aboveground biomass production（kg dry weight）,nutrient uptake and requirements（N,P,Ca,Mg,K） of Brazil nut trees of different sizes grown under agroforestry conditions and fertilized at different *** of 70 experimental trees with different size were harvested and stem,branches and leaves were *** contents were determined for three trees of varying *** tree growth was fast,but variability was high,suggesting considerable potential for the improvement of this economically important *** trees responded to increased levels of fertilizer and lime with significantly increased foliar nutrient contents and growth,probably because of the improved availability of Mg and Ca for which the species seems to have a relatively high *** contrast to Brazil nut trees grown in forest or dense plantations,the agroforestry trees invested a substantial part of their biomass and nutrients in large branches and developed spreading *** improve stem form,reduce competition with associated crops for light and recycle nutrients,regular pruning of lower branches or planting arrangements that favor self-pruning are *** measures would also increase the recycling of Ca and Mg,large quantities of which are contained in the branches.

关键词： Allometric equation Amazon Nutrient competition Nutrient recycling Plant mineral nutrition Soil fertility Silviculture

Coherent States for the Two-Dimensional Dirac-Moshinsky Oscillator Coupled to an External Magnetic field

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Communications in Theoretical Physics 2015年第3期63卷 271-274页

作者： D.Ojeda-Guillen R.D.mota V.D.Granados Escuela Superior de física y Matemáticas Instituto Politécnico NacionalEd.9Unidad Profesional Adolfo López MateosC.P.07738México D.F.Mexico Escuela Superior de Ingeniería Mecánica y Eléctrica Unidad CulhuacánInstituto Politécnico NacionalAv.Santa Ana No.1000Col.San Francisco CulhuacánDelegación CoyoacánC.P.04430Mexico D.F.Mexico

We show that the（2＋1）-dimensional Dirac-Moshinsky oscillator coupled to an externa/ magnetic field can be treated algebraically with the SU（1,1） group theory and its group *** use the su（1,1） irreducible representation theory to find the energy spectrum and the ***,with the su（1,1） group basis we construct the relativistic coherent states in a closed form for this problem.

关键词： Lie algebras coherent states Dirac equation Dirac-Moshinsky oscillator

Spin Number Coherent States and the Problem of Two Coupled Oscillators

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Communications in Theoretical Physics 2015年第7期64卷 34-38页

作者： D.Ojeda-Guillén R.D.mota V.D.Granados Escuela Superior de fisica y Matemáticas Instituto Politécnico Nacional Ed. 9 Unidad Profesional Adolfo López Mateos Escuela Superior de Ingenieria Mecánica y Eléctrica Unidad Culhuacán Instituto Politécnico Nacional

from the definition of the standard Perelomov coherent states we introduce the Perelomov number coherent states for any su(2) Lie algebra. With the displacement operator we apply a similarity transformation to the su(2)generators and construct a new set of operators which also close the su(2) Lie algebra, being the Perelomov number coherent states the new basis for its unitary irreducible representation. We apply our results to obtain the energy spectrum, the eigenstates and the partition function of two coupled oscillators. We show that the eigenstates of two coupled oscillators are the SU(2) Perelomov number coherent states of the two-dimensional harmonic oscillator with an appropriate choice of the coherent state parameters.

关键词： coherent states Lie algebras coupled oscillators