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Temporal stability and directional change in a color cline of a marine snail from NW Spain

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Current Zoology 2024年第2期70卷 163-173页

作者： juan Gefaell Ramon Vigo A.Honorato Gonzalez-Vazquez juan Galindo Emilio Rolan-alvarez Centro de Investigacion Marina Universidade de VigoDepartamento de BioquimicaGenetica e Inmunologia36310 VigoSpain

The evolution and maintenance of color clines is a classic topic of research in evolutionary ***,studies analyzing the temporal dynamics of such clines are much less frequent,due to the difficulty of obtaining reliable data about past color distributions along environmen-tal *** this article,we describe a case of decades-long temporal stability and directional change in a color cline of the marine snail Littorina saxatilis along the coastal inlet of the Ria de Vigo(NW Spain).*** from this area shows a clear color cline with 3 distinct areas from the innermost to the more wave-exposed localities of the Ria:the inner,protected localities show an abundance of fawn-like individuals;the intermediate localities show a high diversity of colors;and the outer,wave-exposed localities show populations with a high frequency of a black and lineated *** compare data from the 1970s and 2022 in the same localities,showing that the cline has kept relatively stable for at least over half a century,except for some directional change and local variability in the frequency of certain *** regression analyses and biodiversity measures are presented to provide clues into the selective pressures that might be involved in the maintenance of this color *** research avenues to properly test the explanatory power of these selective agents as well as the possible origins of the cline are discussed.

关键词： clinal variation color polymorphism ecological gradient Littorina saxatilis natural selection wave exposure.

Limited proteomic response in the marine snail Melarhaphe neritoides after long-term emersion

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Current Zoology 2017年第5期63卷 487-493页

作者： Angel R DIZ Margarita.alvarez-RODRiGUEZ Monica R. ROMERO Emilio FOLAN-alvarez juan GALINDO Department of Biochemistry Genetics and Immunology Faculty of Biology University of Vigo Vigo 36310 Spain Toralla Marine Science Station (ECIMAT) Universidad de Vigo Vigo 36331 Spain Institute of Marine Research (IIM) CSIC Vigo 36208 Spain

Rocky intertidal organisms are commonly exposed to environmental gradients, promoting adapta-tions to these conditions. Emersion time varies along the intertidal range and in the supralittoralzone is frequently larger than a single tidal cycle, even lasting for weeks. The planktonic-dispersinggastropod Melarhaphe neritoides is a common species of the high shore, adapted to reduce waterloss in order to survive during long-term emersion. In this study, we investigated the molecular re-sponse, at the proteome level, of M. neritoides collected in high-shore tide pools to a series ofemersion periods, from 8 to 24 days, in laboratory conditions. We compared this response to indi-viduals maintained submerged during this period, because this was their original habitat. We alsoincluded a reversion treatment in the study, in which emersed individuals were returned to the sub-merged conditions. Although we detected an increase in overall protein concentration with longeremersion periods, contrary to general expectation, the two dimensional electrophoresis （2DE）-based proteomic analysis did not show significant differences between the treatments at the levelof individual protein spots, even after an emersion period of 24 days. Our results suggest that themetabolism remains unaltered independent of the treatment carried out or the changes are verysubtle and therefore difficult to detect with our experimental design. We conclude that M. neri-toides could be equally adapted to emersion and submersion without drastic physiologicalchanges.

关键词： daptation, 2DE proteomics, environmental gradient, intertidal zone, metabolic rate depression.

Brent *** Texas Intermediate in the US petro derivatives price formation

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Petroleum Science 2024年第1期21卷 729-739页

作者： Alejandro Almeida Antonio A.Golpe juan Manuel Martín-alvarez Jose Carlos Vides Universidad Internacional de La Rioja Department of Quantitative Methods for Economics and BusinessLa RiojaSpain University of Huelva Department of Economics and Centro de Estudios Avanzados en FisicaMatematicas y Computacion and ICEIHuelvaSpain Complutense University of Madrid Department of Applied and Structural Economics and History and ICEIMadridSpain

In this paper,we apply the spatial panel model to explore the relationship between the dynamic of two types of crude oil prices(WTI and Brent crude oil)and their refined products over *** the turbulent months of 2011,when Cushing Oklahoma had reached capacity and the crude oil export ban removal in 2015 as breakpoints,we apply this method both in the full sample and the three resultant ***,results suggest our results show that both WTI and Brent display very similar behaviour with the refined ***,when attending to each regime,results derived from the first and third regimes are quite similar to the full sample ***,during the second regime,Brent crude oil became the benchmark in the petrol market,and it influenced the distillate ***,our model can let us determine the price-setters and price-followers in the price formation mechanism through refined *** results possess important considerations to policymakers and the market participants and the price formation.

关键词： Crude oil prices Spatial panel model Refined products Price formation

A Stable FE-FD Method for Anisotropic Parabolic PDEs with Moving Interfaces

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Communications on Applied Mathematics and Computation 2024年第2期6卷 992-1012页

作者： Baiying Dong Zhilin Li juan Ruiz-alvarez School of Civil and Hydraulic Engineering NingXia UniversityYinchuan 750021NingxiaChina School of Mathematics and Computer Science NingXia Normal UniversityGuyuan 756000NingxiaChina Department of Mathematics North Carolina State UniversityRaleighNC 27695-8205USA Departamento de Matematica Aplicada y Estadistica Universidad Politecnica de CartagenaCartagenaSpain

In this paper,a new finite element and finite difference(FE-FD)method has been developed for anisotropic parabolic interface problems with a known moving interface using Cartesian *** the spatial discretization,the standard P,FE discretization is applied so that the part of the coefficient matrix is symmetric positive definite,while near the interface,the maximum principle preserving immersed interface discretization is *** the time discretization,a modified Crank-Nicolson discretization is employed so that the hybrid FE-FD is stable and second order *** terms are needed when the interface crosses grid *** moving interface is represented by the zero level set of a Lipschitz continuous *** experiments presented in this paper confirm second orderconvergence.

关键词： Anisotropic parabolic interface problem Hybrid finite element and finite difference(FE-FD)discretization Modified Crank Nicolson scheme

Bigger or long-winged male common crossbills exhibit redder carotenoid-based plumage coloration

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Current Zoology 2023年第2期69卷 165-172页

作者： Blanca Fernandez-Eslava Daniel Alonso David Galicia juan Arizaga Carlos Alonso-alvarez Biologia Ambiental Universidad de NavarraFacultad de CienciasC/Irunlarrea1 Pamplona31008 NavarraSpain Ornitologia Sociedad de Ciencias de AranzadiZorroagagaina 1120014 DonostiaSan SebastianSpain Ecologia Evolutiva Museo Nacional de Ciencias Naturales(CSiC)Edificio Pinar 2528006 MadridSpain

Carotenoid-based ornaments are often considered reliable(honest)individual condition signals because their expression implies physiological costs unaffordable for low-quality animals(handicap signals).Recently,it has been suggested that efficient cell respiration is mandatory for producing red ketocarotenoids from dietary yellow *** implies that red colorations should be entirely unfalsifiable and independent of expression costs(index signals).In a precedent study,male common crossbills,Loxia curvirostra,showing a red plumage reported higher apparent survival than those showing yellowish-orange *** plumage redness in this species is due to ketocarotenoid accumulation in ***,we correlated the male plumage redness(a 4-level visual score:yellow,patchy,orange,and red)and the body morphology in more than 1,ooo adult crossbills captured in 3 Iberian localities to infer the mechanisms responsible for color evolution.A principal component analysis summarized morphometry of 10 variables(beak,wing,tarsus length,etc.).The overall body size(PC1)and the length of flight feathers regarding body size(Pc3)showed significant positive relationships with plumage *** redness was barely correlated with bill shape measures,suggesting no constraint in acquiring carotenoids from pine ***,large body sizes or proportionally long flying feathers could help carotenoid acquisition via social competition or increased foraging *** longer flight feathers might also be associated with a specific cell respiration profile that would simultaneously favor flying capacities and enzymatic transformations needed for ketocarotenoid *** a phenotypic profile would agree with the hypothesis of ketocarotenoid-based colors acting as individual quality index signals.

关键词： avian carotenoids color and biometrics Loxia genus Mediterranean crossbills resource allocation trade-offs shared pathway hypothesis

Impact of rutin and buckwheat(Fagopyrum esculentum)extract applications on the volatile and phenolic composition of wine

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Food Bioscience 2022年第5期49卷 941-952页

作者： juan Alberto Anaya Victoria Lizama Inmaculada.alvarez María Jos´e García Institut Universitari d’Enginyeria d’Aliments per al Desenvolupament Universitat Polit`ecnica de Val`encia46022ValenciaSpain

The aim of this research is to study the possibility of increasing the quality of red wins made with the Monastrell grape variety.A methodology was established to improve the concentration levels of polyphenol and aroma in these *** flavonoids,the copigmenting effect of rutin stands out,and was tested in both winery and field *** extract(Fagopyrum esculentum),in which rutin is the main flavonoid,may be of interest for viticulture given its biological *** paper focuses on researching the effect of applying the prefermentative vegetable extract of buckwheat(Fagopyrum esculentum)on the concentration of polyphenols and aroma compounds in ***,a study was carried out to compare the effect of pure copigment(rutin)when applied in vineyards and *** vinification was done,plus prefermentative cold *** application of buckwheat extract,and rutin extract to a lesser extent,to Monastrell grapes increased the concentration of malvidin and other anthocyanins,and total *** 12-month storage,no differences were observed in the percentage of copigmented,polymerised and free anthocyanin,the total polyphenol concentration,and the tannin quality parameters like DMACH(aldehyde p-dimethylaminoacimaldehyde)and the Gelatin *** concentrations of diethyl succinate,2 phenylethyl acetate,vanillin and ethyl octanoate increased,while other compounds decreased when the copigment was *** maceration technique followed during the vinification process had very little effect on polyphenolic *** prefermentative maceration slightly increasing the concentration of total polyphenols,but had no effect on the parameters related to colour,anthocyanin concentration,nature of anthocyanins,their binding state or tannin quality *** results showed that cold prefermentation maceration increased the concentration of some volatile compounds,including alcohols and esters,which should be con

关键词： Buckwheat Rutin Copigmentation Prefermentation maceration Wine Polyphenols Volatile compounds

Geometrical quasi-ballistic effects on thermal transport in nanostructured devices

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Nano Research 2021年第4期14卷 945-952页

作者： Sami Alajlouni Albert Beardo Lluc Sendra Amirkoushyar Ziabari Javier Bafaluy juan Camacho Yi Xuan F.Xavier alvarez Ali Shakouri Birck Nanotechnology Center Purdue UniversityWest LafayetteIndiana 47907USA Department of electrical and computer engineering Purdue UniversityWest LafayetteIndiana 47907USA Department of physics Universitat Autonoma de BarcelonaBellaterra 08193CataloniaSpain Oak Ridge National Laboratory Oak RidgeTennessee 37831USA R&D Staff Scientist ImagingSignals and Machine LearningTennessee 37831USA

We employ thermoreflectance thermal imaging to directly measure the steady-state two-dimensional(2D)temperature field generated by nanostructured heat sources deposited on silicon substrate with different geometrical configurations and characteristic sizes down to *** analysis of the results using Fourier's law not only breaks down as size scales down,but it alsofails to capture the impact of the geometry of the heat *** substrate effective Fourier thermal conductivities fitted to wire-shaped and circular-shaped structures with identical characteristic lengths are found to display up to 40%***,a hydrcxjynamic heat transport model reproduces the observed temperature fields for all device sizes and shapes using just intrinsic Si parameters,i.e.,a geometry and size-independent thermal conductivity and nonlocal length *** hydrodynamic model provides insight into the observed thermal response and of the contradictory Fourier *** discuss the substantial Silicon hydrodynamic behavior at room temperature and contrast it to InGaAs,which shows less hydrodynamic effects due to dominant phonon-impurity scattering.

关键词： phonon hydrodynamics nanoscale heat transfer quasi-ballistic transport silicon

Lipomatous ependymoma with ZFTA:RELA fusion-positive:A case report

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World Journal of Clinical Cases 2025年第1期13卷 48-55页

作者： Xiao-Yu Zhao juan-Han Yu Yi-Hua Wang Yi-Xin Liu Lu Xu Lin Fu Ning Yi China Medical University The First Hospital of China Medical UniversityShenyang 110001Liaoning ProvinceChina Department of Pathology The First Hospital of China Medical UniversityShenyang 110001Liaoning ProvinceChina Anshan Cancer Hospital Anshan 114000Liaoning ProvinceChina

BACKGROUND Ependymoma with lipomatous differentiation is a rare type of *** ZFTA fusion-positive supratentorial ependymoma is a novel tumor type in the 2021 World Health Organization classification of central nervous system *** fusion-positive lipomatous ependymoma has not been reported to *** SUMMARY We reported a case of a 15-year-old Chinese male who had a sudden convulsion lasting approximately six *** resonance imaging showed a round cystic shadow of approximately 1.9 cm×1.5 cm×1.9 cm under the right parieto-occipital *** examination showed characteristic perivascular pseudorosettes and adipose differentiation in the ***-chemical staining showed that the tumor cells were negative for cytokeratin,NeuN,Syn and p53,but positive for GFAP,vimentin and S-100 ***-ficant punctate intracytoplasmic EMA immunoreactivity was *** level of Ki-67 was about 5%.Genetic analysis revealed ZFTA:RELA fusion.A cranio-tomy with total excision of the tumor was *** follow-up time was 36 months,no evidence of disease recurrence was found in magnetic resonance *** Based on these findings,the patient was diagnosed as a ependymoma with ZFTA fusion and lipomatous *** case report provides information on the microscopic morphological features of ependymoma with ZFTA fusion and lipomatous differentiation,which can help pathologists to make a definitive diagnosis of this tumor.

关键词： Ependymoma Lipomatous Molecular classification Supratentorial ZFTA:RELA fusion Case report

Preandean geological confguration of the eastern North Patagonian Massif, Argentina

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Geoscience Frontiers 2013年第6期4卷 693-708页

作者： Daniel A.Gregori José Kostadinoff Guillermina.alvarez Ariel Raniolo Leonardo Strazzere juan C.Martínez Mercedes Barros INGEOSUR Cátedra de Geología ArgentinaUniversidad Nacional del SurSan Juan 6708000 Bahía BlancaArgentina Departamento de Física Universidad Nacional del SurArgentina Cátedra de Geofísica Universidad Nacional del SurArgentina Cátedra de Cartografía Universidad Nacional del SurArgentina INGEOSUR Cátedra de PetrologíaUniversidad Nacional del SurArgentina

The Preandean geological configuration of the eastern North Patagonian Massif is established through the use of geological and geophysical *** positive gravity anomalies located near the Atlantic coast are due to 535 and 540 Ma old rocks belonging to the Pampean Orogeny （Precambrian-middle Cambrian）,which are widely recognized in central and northern *** Famatinian Cycle （Ordovician-Devonian） is represented by a Silurian-Devonian marine basin equivalent to those of eastern-central Argentina and South Africa,and which was deformed at the end of the Devonian byan～E-W to WNW-ESE compressional event,part of the Famatinian *** strong gravity gradients,the NW-SE belt is coincident with fault zones which were originated during the Gondwanide *** event also produced NW-SE overthrusting of the Silurian-Devonian sequences and strike-slip faults that displaced blocks in the same *** deformation event belongs to the Gondwanide Orogeny that includes movements related to a counterclockwise rotation of blocks in northern *** strong negative anomalies located in the western part of the area stem from the presence of rocks of the Jurassic Ca（n）adón Asfalto basin interbedded in the Marifil *** volcaniclastic sequences show mild deformation of accommodation zones in a pre-Jurassic paleorelief.

关键词： Preandean geological configuration North Patagonia Argentina Tectonics