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Are the number and size of scales in Liolaemus lizards driven by climate?

Integrative Zoology 2018年第5期13卷 579-594页

作者： María joséTULLI Félix BCRUZ Unidad Ejecutora Lillo(UEL-CONICET) Instituto de HerpetologíaFundación Miguel LilloSan Miguel de TucumánTucumánArgentina Instituto de Investigaciones en Biodiversidad y Medioambiente(INIBIOMA)CONICET-UNCOMA BarilocheRío NegroArgentina

Ectothermic vertebrates are sensitive to thermal fluctuations in the environments where they *** buffer these fluctuations,ectotherms use different strategies,including the integument,which is a barrier that minimizes temperature exchange between the inner body and the surrounding *** lizards,this barrier is constituted by keratinized scales of variable size,shape and texture,and its main function is protection,water loss avoidance and *** size of scales in lizards has been proposed to vary in relation to climatic gradients;however,it has also been observed that in some groups of Iguanian lizards it could be related to ***,here,we studied the area and number of scales(dorsal and ventral)of 60 species of Liolaemus lizards distributed in a broad latitudinal and altitudinal gradient to determine the nature of the variation of the scales with climate,and found that the number and size of scales are related to climatic variables,such as temperature and geographical variables as *** evolutionary process that best explained how these morphological variables evolved was the Ornstein–Uhlenbeck *** number of scales seemed to be related to common ancestry,whereas dorsal and ventral scale areas seemed to vary as a consequence of ecological *** fact,the ventral area is less exposed to climate conditions such as ultraviolet radiation or wind and is,thus,under less pressure to change in response to alterations in external *** is possible that scale ornamentation,such as keels and granulosity,may bring some more information in this regard.

关键词： climate variables habitat use Lioalemidae scale traits

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Conductometric Titration for the Prediction of Conductivity in Solutions with Polymeric Membranes

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Journal of Electronic Science and Technology 2017年第4期15卷 342-350页

作者： María josé Lavorante Juan Isidro Franco Research and Development of Renewable Energy Department at CITEDEF Institute of Scientific and Technical Research for the Defense Villa Martelli B1603ALO Argentina

The analytical technique of conductometric titration is used to characterize polymeric *** technique allows obtaining the polymer dry weight capacity(DWC) and the extent of reaction and establishing the optimal number of water molecules per sulfonic *** this particular case the polymer material under study was Nafion?*** different reactions were made: Neutralization and *** of them allow obtaining the same *** titrations could be considered as a good method to study the neutralization and exchange reactions for polymeric materials used in fuel cells or *** implementation of this analytical technique allows reducing operation time of those types of *** waiting time between determinations permits to say that the amount of reactant consumed and products obtained were the same after each addition of titrant.

关键词： Conductivity conductometric titration polymeric membranes

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Specification of dynamic structure discrete event systems using single point encapsulated control functions

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International Journal of Modeling, Simulation, and Scientific Computing 2014年第3期5卷 171-190页

作者： alexandre Muzy Bernard P.Zeigler I3S UMR CNRS 7271 Bio-info team CS 40121—06903 Sophia-Antipolis CedexFrance RTSync Corp 530 Bartow Drive Suite A Sierra Vista AZ 85635United States of America

In Discrete Event System Specification(DEVS),the dynamics of a network is constituted only by the dynamics of its basic *** state of each component is fully *** in the network is fully decentralized to each *** dynamic structure level,DEVS should permit the same level of ***,it is hard to ensure structure consistency while letting all components achieve structure ***,this solution can be complex to *** avoid these difficulties,usual dynamic structure approaches ensure structure consistency allowing structure changes to be done only by the network having newly added dynamics change *** is a safe and simple way to achieve dynamic ***,it should be possible to simply allow components of a network to modify the structure of their network,other components and/or their own structure—without having to modify the usual definition a DEVS *** this manuscript,it is shown that a simple fully decentralized approach is possible while ensuring full modularity and structure consistency.

关键词： Dynamic structure discrete event system specification

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Implicit Sampling,with Application to Data Assimilation

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Chinese Annals of Mathematics,Series B 2013年第1期34卷 89-98页

作者： alexandre J.CHORIN Matthias MORZFELD Xuemin TU Department of Mathematics University of California Lawrence Berkeley National Laboratory Department of Mathematics University of Kansas

There are many computational tasks, in which it is necessary to sample a given probability density function （or pdf for short）, i.e., to use a computer to construct a sequence of independent random vectors x~ （i ---- 1, 2, ~ ~ ~ ）, whose histogram converges to the given pdf. This can be difficult because the sample space can be huge, and more importantly, because the portion of the space, where the density is significant, can be very small, so that one may miss it by an ill-designed sampling scheme. Indeed, Markov- chain Monte Carlo, the most widely used sampling scheme, can be thought of as a search algorithm, where one starts at an arbitrary point and one advances step-by-step towards the high probability region of the space. This can be expensive, in particular because one is typically interested in independent samples, while the chain has a memory. The authors present an alternative, in which samples are found by solving an algebraic equation with a random right-hand side rather than by following a chain; each sample is independent of the previous samples. The construction in the context of numerical integration is explained, and then it is applied to data assimilation.

关键词： Importance sampling Bayesian estimation Particle filter Implicit filter Data assimilation

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Evaluation of the effectiveness of horizontal subsurface flow constructed wetlands for different media

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Journal of Environmental Sciences 2010年第6期22卷 820-825页

作者： Antonio Albuquerque josé Oliveira Sabrina Semitela Leonor Amaral Department of Civil Engineering and Architecture and C-MADE University of Beira Interior Municipality of Penamacor Department of Sciences and Environmental Engineering Faculty of Sciences and TechnologyNew University of Lisbon

Two media bed （gravel and Filtralite NR） were tested in a mesocosm to evaluate the removal of organic matter （as chemical oxygen demand （COD））, ammonia （NH4-N）, nitrite, nitrate and solid matter （as total suspended solids （TSS）） for a synthetic wastewater （acetate-based） and a domestic wastewater. The use of Filtralite allowed average removal rates （6--16.8 g COD/（m^2·day）, 0.8-1.1 g NH4-N/（m^2·day） and 3.1 g TSS/（m^2·day）） and removal efficiencies （65%-93%, 57%-85% and 78% for COD, NH4-N and TSS, respectively）, higher than that observed in the experiments with gravel. The applied loads of COD, ammonia, nitrate and TSS seem to influence the respective removal rates but only for the treatment of domestic wastewater with nigher correlation coefficients for Filtralite. Regardless the type of media bed and the type of wastewater, nitrate was completely removed for nitrogen loading rates up to 1.3 g NO3-N/（m^2·day）. There was no evidence of the influence of nitrate loads on the removal of organic matter.

关键词： media bed constructed wetlands pollutants removal rates

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Highlights of ASS234: a novel and promising therapeutic agent for Alzheimer’s disease therapy

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Neural Regeneration Research 2020年第1期15卷 30-35页

作者： Alejandro Romero joséMarco-Contelles Eva Ramos Department of Pharmacology&Toxicology Faculty of Veterinary MedicineComplutense University of MadridMadridSpain Laboratory of Medicinal Chemistry Institute of General Organic Chemistry(CSIC)MadridSpain

There is no effective treatment to face Alzheimer’s disease *** molecules are a good approach against the multiple physiopathological events associated with its development and *** this context,N-((5-(3-(1-benzylpiperidin-4-yl)propoxy)-1-methyl-1H-indol-2-yl)methyl)-N-methylprop-2-yn-1-amine(ASS234)has been tested achieving promising ***234 has demonstrated to cross the blood-brain barrier in vivo,and a good in silico safety profile being less toxic than ***,ASS234 reversibly inhibits human acetyl-and butyryl-cholinesterase,and irreversibly inhibits human monoamine oxidase A and ***,this multitarget molecule has antioxidant and neuroprotective properties,and inhibitsΑβ1–42 andΑβ1–40 *** about the mechanism of action,several signaling pathways related to Alzheimer’s disease had been explored showing that ASS234 induces the wingless-type MMTV integration site(Wnt)family and several members of the heat shock proteins family and moreover counteracts neuroinflammatory and oxidative stress-related genes promoting the induction of several key antioxidant ***,in vivo experiments with ASS234 in C57BL/6J mice displayed its ability to reduce amyloid plaque burden and gliosis in the cortex and hippocampus,ameliorating scopolamine-induced learning *** we gather the information regarding ASS234 evaluated so far,showing its ability to face different targets,necessary to counteract a neurodegenerative disease as complex as the Alzheimer’s disease.

关键词： AChE BuChE gene expression heat shock proteins inflammation in silico toxicology MAO A/B neuroprotection oxidative stress Wnt signaling

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Chiral Symmetry Breaking for Fermions Charged under Large Lie Groups

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Communications in Theoretical Physics 2019年第4期71卷 410-416页

作者： Felipe J.Llanes-Estrada alexandre Salas-Bernardez Depto.Fisica Teorica Universidad Complutense de Madrid

We reexamine the dynamical generation of mass for fermions charged under various Lie groups with equal charge and mass at a high Grand Uni?cation scale, extending the Renormalization Group Equations in the perturbativ... 详细信息

关键词： standard model group running fermion mass grand unification scale

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Leaf water potential and gas exchange of eucalypt clonal seedlings to leaf solar protectant

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Journal of Forestry Research 2019年第1期30卷 57-64页

作者： Talita Miranda Teixeira Xavier josé Eduardo Macedo Pezzopane Ricardo Miguel Penchel josé Ricardo Macedo Pezzopane Departamento de Ciências Florestais e da Madeira Universidade Federal do Espírito Santo Fibria Celulose S.A Rodovia General Euryale Jesus Zerbini Embrapa Pecuária Sudeste

This experiment was carried out in acclimatized greenhouses with seedlings of two hybrid clones of Eucalyptus urophylla×Eucalyptus grandis. A sunscreen protector consisting of 62.5% calcium carbonate was sprayed on the seedlings at weekly intervals. Water stress was induced by suspending irrigation until the soil reached 30% available water and water was then replaced so that it returned to field capacity. Gas exchange and leaf water status were measured after 50 days. The experiment was set up in a 4×2 factorial randomized block design in four distinct environments:(1) temperatures less than 21.2℃ and vapor pressure deficit of 0.15 kPa;(2) intermediate temperatures of 24.2℃ and vapor pressure deficit of 0.69 kPa;(3) high temperatures of 27.0℃ and high vapor pressure deficit of 1.4 kPa; and,(4) high temperature of 27.0℃ and vapor pressure deficit below 1.10 kPa. Two leaf sun protector treatments were used, with five replications each. High atmospheric demand acted as a stress factor for the seedlings during the initial growth *** of leaf sunscreen protector provided beneficial effects in maintaining optimum water status and gas exchanges of the plants under water stress.

关键词： Eucalyptus urophylla×Eucalyptus grandis Calcium carbonate Water stress Atmospheric demand

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Taurine as a possible therapy for immunosenescence and inflammaging

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Cellular & Molecular Immunology 2024年第1期21卷 3-5页

作者： joséM.Izquierdo Centro de Biología Molecular Severo Ochoa(CBMSO).Consejo Superior de Investigaciones Científicas Universidad Autónoma de Madrid(CSIC/UAM)C/Nicolás Cabrera 1Campus de Cantoblanco28049MadridSpain

In their recent Science article,Singh et *** taurine as an endogenously produced anti-inflammatory,anti-immunosenescence,and anti-aging *** authors also show that restoring taurine to its“youthful”levels prevents in... 详细信息

关键词： Taurine inflam

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Pressureless sintering behavior and properties of Ag-SnO_2

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Rare Metals 2019年第1期38卷 35-41页

作者： Henri Desplats Elodie Brisson Philippe Rogeon Patrick Carré alexandre Bonhomme Department of Materials Engineering IRDL FRE CNRS 3744University of South Brittany Schneider Electric-Electropole 31 rue Pierre Mendes France

In this study, the results of measurements on pressureless sintering behavior of Ag-SnO_2(88%wt Ag,12%wt SnO_2) pellets were reported. Dilatometric measurements, relative densities, hardness values, rupture transverse strength and electrical conductivities function of sintering temperatures were presented. A constant thermal expansion coefficient was determined, and a threshold temperature of densification(T_d) was exhibited. Sintering kinetics were reported for different temperatures. Hardness values were measured, and no increase in hardness is found under Td. Three-points bending tests were used to determine the transverse rupture strength whose evolution appears importantly well under Td. In the same manner, the increase in initial electrical conductivities begins well under Td. Under the threshold temperature, the relative increase in electrical conductivity is found to be independent of initial density of green compact pellets. This work highlights different evolutions in function of sintering temperature for the electrical conductivity and transverse rupture strength on the one hand, and for the densification and hardness on the other hand.

关键词： Ag-SnO2 Pressureless sintering Dilatometry Mechanical properties Electrical conductivity

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