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Interpolation of Ideal Measures by Abstract K and J Spaces

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Acta Mathematica Sinica,English Series 2007年第8期23卷 1357-1374页

作者： Luz M.fernndez-CABRERA Antón MARTíNEZ Sección Departamental de Matemática Aplicada Escuela de EstadísticaUniversidad Complutense de Madrid28040 MadridSpain Departamento de Matemática Aplicada I E.T.S.Ingenieros IndustrialesUniversidad de Vigo36200

We work with the abstract K and J interpolation method generated by a sequence lattice Г. We investigate the deviation of an interpolated operator from a given operator ideal by establishing formulae for the ideal measure of the interpolated operator in terms of the ideal measures of restrictions of the operator. Formulae are given in terms of the norms of the shift operators on Г.

关键词： real interpolation ideal measures operator ideals shift operators

Design of a Socially Inclusive Climate Risk Transfer Mechanism:A Case Study in La Guajira,Colombia

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International Journal of Disaster Risk Science 2024年第4期15卷 565-578页

作者： Cristian Camilo fernández Lopera JoséManuel Mendes Eduardo Jorge Barata Centre for Social Studies Institute for Interdisciplinary ResearchUniversity of Coimbra3000-995 CoimbraPortugal Faculty of Economics Centre for Social StudiesUniversity of Coimbra3000-995 CoimbraPortugal Faculty of Economics CeBERUniversity of Coimbra3004-512 CoimbraPortugal

The primary aim of this study was to develop a model of a socially inclusive climate risk insurance(CRI) mechanism based on the differential risk transfer approach. This study focused on the department of La Guajira, Colombia, as a case *** Guajira is the department in Colombia that, due to its critical disaster risk conditions, presents the adequate configuration for implementing a climate risk transfer mechanism. The article starts by analyzing risk conditions by using secondary data. Based on fieldwork, this research explored the perspectives of the most vulnerable sectors in La Guajira Department on the socioeconomic impacts and needs they experience regarding climate-related hazards, their adaptive measures for risk reduction, and their willingness to adopt CRI. This represents the fundamental input for the formulation of the CRI model. Consequently, this research proposed an operational structure as input for future implementations of the model. The results indicate that national and local disaster risk management public policies align with the sectors' needs and priorities. Strengthening sectoral associations can enhance representation in CRI projects. In-kind indemnization is preferred for women entrepreneurs and the indigenous community. The CRI model includes a risk pool through the family compensation fund of La Guajira as a sectoral agglomerator, with contingent credit and traditional/parametric insurance. The methodology developed in this study can be applied in different contexts worldwide as a guidance for informing national and international climate risk finance initiatives.

关键词： Colombia Disaster risk fnancing Disaster risk management La Guajira Climate risk insurance Socioeconomic vulnerability

Evaluation of Ocimum basilicum *** Different Concentrations of K^(+)as an Inhibitor of Pathogenic Bacterial Strains

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Phyton-International Journal of Experimental Botany 2021年第2期90卷 533-541页

作者： Mercedes Georgina ramírez-Aragón Victoria Jared Borroel-García ramón Valenzuela-Soto Ricardo David Valdez-Cepeda Francisco Javier Wong-Corral JoséLuis García-Hernández Universidad Politécnica de Gómez Palacio Gómez Palacio35120México Universidad Autónoma Chapingo Centro Regional Universitario Centro-NorteZacatecasZac.Universidad Autónoma de ZacatecasFacultad de MatemáticasZacatecas98053México Departamento de Investigación y Posgrado en Alimentos Universidad de SonoraHermosillo83000México Facultad de Agricultura y Zootecnia Universidad Juárez del Estado de DurangoGómez Palacio34000México

The extraction of bioactive compounds has become one of the most interesting areas of modern *** therapeutic reasons,it´s important to obtain antimicrobial agents from natural *** objective of the present study was to determine the inhibitory effect of ethanolic extract of basil(Ocimum basilicum *** Rubin)subjected to different concentrations of potassium(K^(+))on the activity of three bacterial strains that are pathogens in *** was evaluated by inhibition surface and these results were compared to two antibiotics:Gentamicin(GE)and Ciprofloxacin(CPF)for their efficacy against each bacterial *** variables presented significant difference(p≤0.05).According to the results,basil extract evaluated showed positive antibacterial activity against the three strains of Pseudomonas aeruginosa,Listeria monocytogenes and Staphylococcus aureus on Mueller Hinton *** was observed highest inhibition areas of different diameters(15.3 mm,21.3 mm and 21.6 mm respectively)when the extract used was obtained from the plants with the highest concentration of potassium(13 mmol L-1).These values were even superior to the highest values showed on the treatments with the antibiotic gentamicin.

关键词： Basil inhibition potassium secondary metabolites antibiotics

Soil-vegetation relationships in Mediterranean forests after fire

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Forest Ecosystems 2021年第2期8卷 240-252页

作者： Víctor fernández-García Elena Marcos Sara Huerta Leonor Calvo Area of Ecology Department of Biodiversity and Environmental ManagementFaculty of Biological and Environmental SciencesUniversidad de León24071 LeónSpain

Background:Wildfires are one of the major environmental concerns in Mediterranean ***,many studies have addressed wildfire impacts on soil and vegetation in Mediterranean forests,but the linkages between these ecosystem compartments after fire are not well *** aim of this work is to analyze soil-vegetation relationships in Mediterranean burned forests as well as the consistency of these relationships among forests with different environmental conditions,at different times after fire,and among vegetation with different functional ***:Our results indicate that study site conditions play an important role in mediating soil-vegetation ***,we found that the nature of soil-vegetation relationships may vary over time as fire effects are less dominant in both ecosystem *** this,we detected several common soil-vegetation relationships among study sites and times after *** instance,our results revealed that available P content and stoichiometry(C:P and N:P)were closely linked to vegetation growth,and particularly to the growth of *** found that enzymatic activities and microbial biomass were inversely related to vegetation growth rates,whereas the specific activities of soil enzymes were higher in the areas with more vegetation height and ***,our results suggest that resprouters may influence soil properties more than seeders,the growth of seeders being more dependent on soil ***:We provide pioneer insights into how vegetation is influenced by soil,and vice-versa,in Mediterranean burned *** results reflect variability in soil-vegetation relationships among study sites and time after fire,but consistent patterns between soil properties and vegetation were also *** research is highly relevant to advance in forest science and could be useful to achieve efficient post-fire management.

关键词： Wildfires Soil nutrients Enzymatic activities Microbial biomass Growth forms Regenerative strategies

Reactive oxygen species, nitric oxide and plant cell death associated with caspase-like protease activity during somatic embryogenesis in Fraxinus mandshurica

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Journal of Forestry Research 2022年第3期33卷 1005-1017页

作者： Hao Wang Dongyan Zhang Juan Luis fernández-Lorenzo Hailong Shen Ling Yang State Key Laboratory of Tree Genetics and Breeding School of ForestryNortheast Forestry UniversityHarbin150040People’s Republic of China Crop Production Department High Polytechnique School of EngineeringSantiago de Compostela UniversityLugoSpain

Programmed cell death occurs in browning explants of Fraxinus mandshurica during somatic embryogenesis, but the underlying mechanism is unclear. In this study, single cotyledons of zygotic embryos of F. mandshurica were used as explants. Mitochondrial structure and function, caspase-3-like protease activity, hydrogen peroxide metabolism, and nitric oxide accumulation induced by high concentrations of sucrose and plant growth regulators were studied. The results show that plant growth regulators induced somatic embryogenesis and also promoted explant browning. High sucrose concentrations had similar effects. High concentrations of sucrose and plant growth regulators led to the accumulation of hydrogen peroxide and nitric oxide which induced changes in mitochondrial structure and function such as modifications in mitochondrial morphology, increased membrane permeability, decreased membrane potential, and the release of cytochrome c into the cytoplasm. An increase in caspase-3-like protease activity triggered programmed cell death in some browning explant cells. During somatic embryogenesis there were increased activities of superoxide dismutase, peroxidase, and catalase, which are associated with hydrogen peroxide metabolism and jointly maintain reactive oxygen species levels. Intracellular nitric oxide synthase and nitrate reductase activities were not significantly correlated with nitric oxide content. Instead, intracellular nitric oxide may be derived from non-enzymatic reactions. Our results indicate that hydrogen peroxide and nitric oxide may function as signals, playing key roles in somatic embryogenesis and programmed cell death of explant cells of F. mandshurica. The interaction between nitric oxide and reactive oxygen species determines the occurrence of programmed cell death in explant cells;somatic embryogenesis and programmed cell death are positively regulated by hydrogen peroxide. However, the regulation of nitric oxide is complex.

关键词： Manchurian ash Somatic embryogenesis Programmed cell death Mitochondria Reactive oxide species Nitric oxide

PANoptosis:new insights in regulated cell death in ischemia/reperfusion models

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Neural Regeneration Research 2023年第2期18卷 342-343页

作者： Paloma González-Rodríguez Arsenio fernández-López Área de Biología Celular Instituto de BiomedicinaUniversidad de LeónSpain

See related article,pp 357-363The first study describing the cell death and destruction of tissues,organs,and organ systems as programmed events during the development of multicellular organisms was performed by JW Saunders Jr in *** term apoptosis was introduced by Kerr,Wyllie,and Currie in 1972 to describe a programmed phenomenon opposite to mitosis in the regulation of animal cell ***,a description of ectodermal cell lineages as programmed cell death in the worm Caenorhabditis elegans was publishedby JE Sulston and HR Horvitz in 1976.

关键词： organs insight opposite

Topical Calendula officinalis *** inflammatory pain through antioxidant,anti-inflammatory and peripheral opioid mechanisms

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Journal of Integrative Medicine 2023年第1期21卷 34-46页

作者： Bárbara B.Garrido-Suárez Gabino Garrido Addis Bellma Menéndez Nelson Merino Odalys Valdés Nilia de la Paz Aylema Romero Livan Delgado Miguel D.fernández Octavio Piñeros RenéDelgado-Hernández Pharmacology and Toxicology Chemical Analytic and Pharmaceutical Technology LaboratoriesCenter for Pharmaceutical Research and Development(CIDEM)Havana 10600Cuba Department of Pharmacology Institute of Marine Science(ICIMAR)Havana 10300Cuba Department of Pharmaceutical Sciences Faculty of SciencesCatholic University of the NorthAntofagasta 1240000Chile Research Department University of Santiago de CaliCali 760032Colombia Center for Research and Biological Evaluations Institute of Pharmacy and FoodUniversity of HavanaHavana 17100Cuba

Objective The present study evaluated the antinociceptive activity of Calendula officinalis L.(Ca)cream on inflammatory *** Creams with different Ca concentrations were tested for their ability to ameliorate pain-related behavior and edema in rats using formalin test,carrageenan(Cg)-induced acute inflammation model,bradykinin(BK)-induced acute inflammation model,and complete Freund’s adjuvant(CFA)-induced chronic inflammation *** the formalin test,we also examined the implication of peripheral opioid receptors in the antinociceptive mechanisms of Ca cream,by means of Q-naloxone,a peripherally acting nonselective opioid ***,the effects of Ca cream compared with diclofenac on BK-induced edema were examined when the kininase II in tissue was preserved or inhibited by *** local production of redox biomarkers in formalin model,tumor necrosis factor-α(TNF-α)in Cg model and histopathological changes in CFA model were also *** A single application of Ca cream at a dose of 10%or 30%(w/w)decreased the formalin-induced licking/biting behavior during both phases of this test in a Q-naloxone-sensitive *** effect was associated with the reduction of oxidative stress in the injured paw and the edema associated with the later phase of formalin-induced pain.A single application of Ca cream(10%or 30%)reduced paw edema and thermal hypernociception in Cg-induced acute inflammation,corresponding with a local decrease in TNF-α.Ca cream also inhibited BK-induced spontaneous nociceptive behavior and paw inflammation in both paradigms *** applications of Ca cream also decreased CFA-induced chronic inflammation,mechanical hypernociception and histopathological changes in the *** These results reveal the topical antinociceptive and antiedematogenic effects of Ca cream.A modulatory action on peripheral opioid receptors associated with its antioxidant mechanism may be involved,at least in par

关键词： Calendulaofficinalis L. Formalintest Pain Hyperalgesia Inflammation

Aquaglyceroporins but not orthodox aquaporins are involved in the cryotolerance of pig spermatozoa

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Journal of Animal Science and Biotechnology 2020年第1期11卷 20-31页

作者： Ariadna Delgado-Bermúdez Marc Llavanera Leira fernández-Bastit Sandra Recuero Yentel Mateo-Otero Sergi Bonet Isabel Barranco Beatriz fernández-Fuertes Marc Yeste Biotechnology of Animal and Human Reproduction(TechnoSperm) Unit of Cell BiologyDepartment of BiologyFaculty of SciencesInstitute of Food and Agricultural TechnologyUniversity of GironaC/Maria Aurèlia Campany69Campus MontiliviE-17003 GironaSpain

Background:Aquaporins(AQPs)are a family of transmembrane water channels that includes orthodox AQPs,aquaglyceroporins(GLPs)and super ***3,AQP7,AQP9 and AQP11 have been identified in boar sperm,and they are crucial for sperm maturation and *** exchange is an important event in cryopreservation,which is the most efficient method for long-term storage of ***,the freezethaw process leads to sperm damage and a loss of fertilizing *** that the quality of frozenthawed sperm partially depends on the regulation of osmolality variations during this process,AQPs might play a crucial role in boar semen *** this context,the aim of this study was to unravel the functional relevance of the different groups of AQPs for boar sperm cryotolerance through three different ***:Inhibition of different groups of AQPs was found to have different effects on boar sperm *** the use of 1,3-propanediol(PDO),an inhibitor of orthodox AQPs and GLPs,decreased total motility(P<0.05),it increased post-thaw sperm viability,lowered membrane lipid disorder and increased mitochondrial membrane potential(MMP)(P<0.05).When acetazolamide(AC)was used as an inhibitor of orthodox AQPs,the effects on post-thaw sperm quality were restricted to a mild increase in MMP in the presence of the intermediate concentration at 30 min post-thaw and an increase in superoxide levels(P<0.05).Finally,the addition of phloretin(PHL),a GLP inhibitor,had detrimental effects on post-thaw total and progressive sperm motilities,viability and lipid membrane disorder(P<0.05).Conclusions:The effects of the different inhibitors suggest that GLPs rather than orthodox AQPs are relevant for boar sperm ***,the positive effect of PDO on sperm quality suggests a cryoprotective role for this molecule.

关键词： Acetazolamide Aquaporins Boar Phloretin Propanediol Sperm

Size effects on the tensile strength and fracture toughness of granitic rock in different tests

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第9期15卷 2179-2192页

作者： Ignacio Pérez-Rey Andrea Muñoz-Ibáñez Manuel A.González-fernández Mauro Muñiz-Menéndez Miguel Herbón Penabad Xian Estévez-Ventosa Jordi Delgado Leandro RAlejano Laboratorio de Geotecnia CEDEXMadridSpain CINTECX GESSMin GroupDepartment of Natural Resources and Environmental EngineeringUniversidade de VigoVigoSpain School of Civil Engineering Universidade da CoruñaA CoruñaSpain

This study investigates the tensile failure mechanisms in granitic rock samples at different scales by means of different types of *** do that,we have selected a granitic rock type and obtained samples of different sizes with the diameter ranging from 30 mm to 84 *** samples have been subjected to direct tensile strength(DTS)tests,indirect Brazilian tensile strength(BTS)tests and to two fracture toughness testing *** DTS and fracture toughness were found to consistently grow with sample size,this trend was not clearly identified for BTS,where after an initial grow,a plateau of results was *** is a rather complete database of tensile related properties of a single rock *** if similar databases are rare,the obtained trends are generally consistent with previous scatter and partial experimental ***,different observations apply to different types of rocks and experimental *** differences in variability and mean values of the measured parameters at different scales are critically analysed based on the heterogeneity,granular structure and fracture mechanics *** potential relations between parameters are revised and an indication is given on potential sample sizes for obtaining reliable *** this database with different types of rocks is thought to be convenient to advance towards a better understanding of the tensile strength of rock materials.

关键词： Size effect Tensile strength Fracture toughness Granite Finite fracture mechanics