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Individual and demographic responses of a marsh bird assemblage to habitat loss and subsequent restoration

Avian Research 2020年第1期11卷 25-33页

作者： ruben Moreno-Opo Monticola Ornithological Group Faculty of BiologyUniversity Autonoma of MadridMadrid 28049Spain Deputy Directorate on Biodiversity Ministry for the Ecological TransitionMadrid 28071Spain

Background: The alteration and loss of habitats are two of the main threats that biodiversity conservation is cur?rently facing up to. The present study describes the effects of a perturbation and restoration in a reedbed habitat on a bird assemblage. We studied the bird community of a wetland of central Spain between 1995 and 2009, during which time an anthropic perturbation altered the original structure of the habitat;subsequently, as a result of restoration works, the habitat returned to its original ***: We evaluated the effects on six population and physical parameters of the birds at three different phases of their life cycles(breeding, wintering and post?breeding migration seasons) before, during and after the habitat alteration. GLM was used to analyze the influence of three independent variables(year, perturbation phase and temperature).Results: The relative abundance and the species richness values decreased when habitat was altered, but then recovered as a result of the regeneration works. This pattern was the clearest amongst specialist species. Breeding success also declined during the perturbation phase and then increased;likewise, the sex ratio changed given that the proportion of male birds increased when habitat was altered. These results are discussed in relation to changes on availability of resources in altered habitats, to the adaptive mechanisms in the exploitation of ecological requirements and to the selection of optimum and sub?optimum habitats by generalist and specialist ***: Ecosystem restoration can favour the recovery of population indexes of specialist passerines, although it depends on the efficiency of the type of restoration activity performed and on the complexity of the habitat.

关键词： Habitat loss Land-use planning Marsh Restoration Ringing station Reedbed

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Cohomology in 3D Magneto-Quasistatics Modeling

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Communications in Computational Physics 2013年第6期14卷 48-76页

作者： Pawel Dlotko ruben Specogna Institute of Computer Science Jagiellonian Universityul.St.Łojasiewicza 630-348 KrakowPoland Universita di Udine Dipartimento di Ingegneria ElettricaGestionale e MeccanicaVia delle Scienze 20833100 UdineItaly

Electromagnetic modeling provides an interesting context to present a link between physical phenomena and homology and cohomology *** the past twenty-five years,a considerable effort has been invested by the computational electromagnetics community to develop fast and general techniques for defining *** magneto-quasi-static discrete formulations based on magnetic scalar potential are employed in problems which involve conductive regions with holes,cuts are needed to make the boundary value problem well *** an intimate connection with homology theory has been quickly recognized,heuristic definitions of cuts are surprisingly still dominant in the *** aim of this paper is first to survey several definitions of cuts together with their ***,cuts are defined as generators of the first cohomology group over integers of a finite *** provably general definition has also the virtue of providing an automatic,general and efficient algorithm for the computation of *** counter-examples show that heuristic definitions of cuts should be *** use of cohomology theory is not an option but the invaluable tool expressly needed to solve this problem.

关键词： Algebraic topology (co)homology computational electromagnetics cuts

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Corrosion Behavior of Reactive Sputtered Al_2O_3 and ZrO_2 Thin Films on Mg Disk Immersed in Saline Solution

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Journal of Materials Science & Technology 2015年第9期31卷 873-880页

作者： ruben Kotoka Sergey Yarmolenko Devdas Pai Jag Sankar Engineering Research Center for Revolutionizing Metallic Biomaterials North Carolina A&T State University

Magnesium has attracted a lot of attention over the last few decades due to its light weight and potential use as biomaterial However, the poor corrosion resistance of magnesium restricts its practical use for ap- plication where exposure to aggressive aqueous media is unavoidable. This paper describes the growth, characterization and corrosion analyses of Al2O3 and ZrO2 thin film coatings aimed at slowing down the fast degradation of Mg in saline solution. In this study, different thicknesses of Al2O3 and ZrO2 were de- posited on pure magnesium （99.95%） disk using pulsed-DC reactive sputtering process. The microstructure and phase analyses were performed using scanning electron microscopy （SEM） and X-ray diffraction （XRD）, respectively. The corrosion protection behavior of the Al2O3 and ZrO2 coated magnesium samples im- mersed in 0,9 wt% NaCl solution were evaluated using electrochemical measurement techniques, such as open-circuit potential （OCP）, potentiodynamic polarization （PD） and electrochemical impedance spectros- copy （EIS）. The microstructural analyses showed that the Al2O3 thin film coatings have circular grains between 5 and 25 nm, while the ZrO2 coatings have bigger ellipsoidal grains. The results from the electrochemical corrosion analyses showed that the Al2O3 coated Mg disk had corrosion resistance of approximately 3 times that of ZrO2 coated Mg disk. It was also observed that increasing the thickness of the Al2O3 coating im- proved the corrosion resistance of the Mg disk. These results suggest that Al2O3 and ZrO2 coating can be used to effectively control the fast degradation of magnesium for medical implant applications.

关键词： Magnetron sputteringMagnesiumAluminum oxideZirconium oxidePorosity

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Shoot-level biomass allocation is affected by shoot type in Fagus sylvatica

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Journal of Plant Ecology 2012年第4期5卷 422-428页

作者： Benjamín Jarcuska ruben Milla Institute of Forest Ecology Slovak Academy of SciencesSturova 296053 ZvolenSlovakia Area de Biodiversidad y Conservacion Universidad Rey Juan Carlosc/Tulipan s/n.E-28933 Mostoles(Madrid)Spain

Aims The present study aims(i)to examine if recently reported interspecific shoot-level biomass allocational trade-offs,*** trade-offs between leaf mass(LM)and stem mass(SM)and between leaf size and leaf number,hold intraspecifically and(ii)to explore whether those scaling relationships are independent of shoot type(*** *** shoots).Methods In order to address our questions,we used Fagus sylvatica saplings growing under a broad light range that were sampled in theWestern Carpathians Mountains(Slovakia).Important Findings We found that:(i)intraspecific shoot-level biomass allocational trade-offs differ from those reported interspecifically and that(ii)long and short shoots differ in biomass allocation scaling *** relationships with slopes statistically smaller than 1.0 or higher than-1.0,were found between SM and LM and between mean leafing intensity and individual leaf mass,respectively,in long *** contrast,isometric scaling was found in short *** suggests that leaf mass in short shoots is unaffected by shoot stem mass,in contrast to long *** shoots also had a larger fraction of biomass allocated to *** shoots,as has been observed in other shoot dimorphic species,are specialized,with short shoots specializing in carbon gain and long shoots in space acquisition.A greater shift in LM than in SM among species during speciation shifting from allometric intraspecific relationships to an isometric interspecific scaling relationship between those traits could explain the discrepancies between the outputs of the present intraspecific study and others similar *** study draws attention to the importance of considering shoot types in future studies dealing with allocation rules in species with dimorphic shoots.

关键词： biomass allocation dimorphic shoots leaf size stem size scaling relationships

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Germ-free, carefree: injured skin uses IL-24 to kick-start repair independent of pathogen-recognition

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Signal Transduction and Targeted Therapy 2023年第11期8卷 5129-5131页

作者： ruben A.Ferrer Marta Torregrossa Sandra Franz Department of Dermatology Allergology and VenerologyUniversity LeipzigLeipzigGermany

Skin injury releases damage-associated molecular patterns(DAMPs)represented by tissue-components and intracellular contents as well as changes in the levels of certain molecules and metabolites that signal the“non-homeostatic”state of the *** addition,microorganisms entering a wound release molecules,which are sensed as“non-self”(pathogen-associated molecular patterns,PAMPs).Together,DAMPs and PAMPs initiate a complex and coordinated repair process aimed at restoring *** exciting work from Liu et *** of an additional novel mechanism by which a“non-homeostatic”state in murine cutaneous wounds elicits a response through IL-24 to mediate repair(Fig.1).

关键词： wound homeostasis release

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cell2mol:encoding chemistry to interpret crystallographic data

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npj Computational Materials 2022年第1期8卷 1787-1794页

作者： Sergi Vela ruben Laplaza Yuri Cho Clémence Corminboeuf Laboratory for Computational Molecular Design(LCMD) Institute of Chemical Sciences and Engineering(ISIC)École Polytechnique Fédérale de Lausanne(EPFL)CH-1015LausanneSwitzerland National Centre for Computational Design and Discovery of Novel Materials(NCCR MARVEL) Ecole Polytechnique Fédérale de Lausanne1015LausanneSwitzerland National Centre for Competence in Research“Sustainable chemical processes through catalysis(NCCR Catalysis)” École Polytechnique Fédérale de Lausanne1015LausanneSwitzerland

The creation and maintenance of crystallographic data repositories is one of the greatest data-related achievements in *** such as the Cambridge Structural Database host what is likely the most diverse collection of synthesizable *** properly mined,they could be the basis for the large-scale exploration of new regions of the chemical space using quantum chemistry(QC).Yet,it is currently challenging to retrieve all the necessary information for QC codes based exclusively on the available structural data,especially for transition metal *** overcome this limitation,we present cell2mol,a software that interprets crystallographic data and retrieves the connectivity and total charge of molecules,including the oxidation state(OS)of metal *** demonstrate that cell2mol outperforms other popular methods at assigning the metal OS,while offering a comprehensive interpretation of the unit *** code is made available,as well as reliable QC-ready databases totaling 31k transition metal complexes and 13k ligands that contain incomparable chemical diversity.

关键词： offering overcome properly

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Declining metabolic scaling parallels an ontogenetic change from elongate to deep-bodied shapes in juvenile Brown trout

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Current Zoology 2023年第3期69卷 294-303页

作者： Jorge-ruben Sanchez-Gonzalez Alfredo G.Nicieza Department of Organisms andSystems Biology University of Oviedo33006O OviedoSpain Biodiversity Research Institute(IMIB) University of Oviedo-Principality of Asturias-CSIC33600 MieresSpain Department of Animal Science-Wildlife Section University of Lleida25006 LleidaSpain

Body shape and metabolic rate can be important determinants of animal performance,yet often their effects on influential traits are evaluated in a non-integrated *** creates an important gap because the integration between shape and metabolism may be crucial to evaluate metabolic scaling ***,we measured standard metabolic rate in 1-and 2-years old juvenile brown trout Salmo trutta,and used a geometric morphometrics approach to extricate the effects of ontogeny and size on the link between shape and metabolic *** evidenced near-isometric ontogenetic scaling of metabolic rate with size,but also a biphasic pattern driven by a significant change in metabolic scaling,from positive to negative ***,the change in metabolic allometry parallels an ontogenetic change from elongate to deep-bodied *** is consistent with the dynamic energy budget(DEB)and surface area(SA)theories,but not with the resource transport network theory which predicts increasing allometric exponents for trends towards more robust,three-dimensional *** addition,we found a relationship between body shape and size independent metabolic rate,with a positive correlation between robustness and metabolic rate,which fits well within the view of Pace-of-Life Syndromes(POLS).Finally,our results align with previous studies that question the universality of metabolic scaling exponents and propose other mechanistic models explaining the diversity of metabolic scaling relationships or emphasizing the potential contribution of ecological factors.

关键词： biphasic allometric scaling metabolic rate ontogenetic allometry shape surface-area trout

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Gene therapy of liver cancer

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World Journal of Gastroenterology 2006年第38期12卷 6085-6097页

作者： ruben Hernandez-Alcoceba Bruno Sangro Jesus Prieto Division of Gene Therapy and Hepatology School of Medicine Foundation for Applied Medical Research-CIMA University of Navarra Spain Department of Medicine Clinica Universitaria University of Navarra Spain Division of Gene Therapy and Hepatology School of Medicine Foundation for Applied Medical Research-CIMA University of Navarra Spain Department of Medicine Clinica Universitaria University of Navarra Spain

The application of gene transfer technologies to the treatment of cancer has led to the development of new experimental approaches like gene directed enzyme/pro- drug therapy (GDEPT), inhibition of oncogenes and restoration of tumor-suppressor genes. In addition, gene therapy has a big impact on other fields like cancer immunotherapy, anti-angiogenic therapy and virotherapy. These strategies are being evaluated for the treatment of primary and metastatic liver cancer and some of them have reached clinical phases. We present a review on the basis and the actual status of gene therapy approaches applied to liver cancer.

关键词： Gene therapy Cancer Liver Hepatocellular carcinoma Vector Therapeutic gene

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Study on carnauba wax as phase-change material integrated in evacuated-tube collector for solar-thermal heat production

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Clean Energy 2023年第3期7卷 547-554页

作者： ruben Bartali MicheleBolognese NicolaFronza LucaPrattico AlbertoZanetti TiagoOsorio Luigi Crema Fondazione Bruno Kessler Centre on Sustainable EnergyVia Sommarive 1838123 TrentoItaly University ofÉvora-Renewable Energies Chair Palácio VimiosoLargo Marquês de Marialva7002-554ÉvoraPortugal

The evacuated-tube collector(ETC)for solar heat production is one of the most efficient systems to convert Sun energy into usable ***,some technological barriers are still present in solar-thermal heat systems that limit the use of these technologies to decarbonize *** important obstacle is the requirement for heat at stable temperatures,which is not always achievable by solar fields,*** *** that reason,in this work,we studied the phase-change materials embedded in the ETC to keep stable the water temperature for a short period(minutes,hours).In this study,carnauba wax was used as a sustainable phase-change material(PCM),to avoid the use of PCM based on hydrocarbon *** PCM has been packaged using a polyethylene bag inserted into an ETC with heat-pipe technologies and *** collector has been tested outdoors under solar irradiation and under shading *** experimental results show that is possible to detect a sensible effect of the PCM on the temperature using 4 kg of carnauba wax while there is an important effect on the temperature stabilization using 9 kg of *** 9 kg of the PCM,we observed a stability of the outlet water temperature at 65°C for 30 minutes under shading conditions.

关键词： energy storage carnauba wax ETC solar collector solar heat PCM

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The ALPPS procedure-As Limited Procedures as Possible, leads to improved Survival

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Hepatobiliary Surgery and Nutrition 2022年第4期11卷 636-639页

作者： ruben Ciria Javier Briceño Unit of Hepatobiliary Surgery and Liver Transplantation University Hospital Reina SofíaCórdobaSpain

The history of procedures for liver regeneration in the context of extended resections changed with the incorporation of Associating Liver Partition to Portal Vein Ligation in Two-Staged Hepatectomy(ALPPS)(1).The main well-known advantages of the ALPPS procedure are a fast and feasible increase in liver volume within a short period of time which leads to a second-stage procedure in 2-3 weeks.

关键词： ALPPS Survival liver

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