Artículos de revista: Envíos recientes
Mostrando ítems 701-720 de 887
-
Nonlinear optimization for a tumor invasion PDE model : computational and applied mathematics
(Sociedade Brasileira de Matemática Aplicada e Computacional, 2018)In thiswork,we introduce amethodology to approximate unknownparameters that appear on a non-linear reaction–diffusionmodel of tumor invasion. These equations consider that tumor-induced alteration of micro-environmental ... -
Estimation of the functional form of subgrid-scale parametrizations using ensemble-based data assimilation : a simplemodel experiment
(Royal Meteorological Society, 2016)Oceanic and atmospheric global numerical models represent explicitly the large-scale dynamics while the smaller-scale processes are not resolved, so that their effects in the large-scale dynamics are included through ... -
Evidence of the occurrence of structural chromosome changes at the initial diploid diversification of the autopolyploid turnera sidoides l. (passifloraceae) complex
(Natl research council Canada-n R C research press, 2015)Turnera sidoides is an autopolyploid complex of obligate outcrossing perennial herbs. It includes five subspecies and five morphotypes in which diploid to octoploid cytotypes were found. Based on phenetic analyses of the ... -
Hedeoma teyucuarensis (lamiaceae), una especie nueva de Misiones, Argentina
(Instituto de Botánica Darwinion, 2016-07-31)Se describe una nueva especie de Hedeoma (Lamiaceae) sobre la base de muestras recolectadas en la provincia de Misiones, Argentina. Se incluye una ilustración, fotos del nuevo taxon, información acerca de su hábitat, estado ... -
Volvariella (pluteacae, basidiomycota) en el norte de la Argentina
(Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 2017)Se describen e ilustran tres especies de Volvariella para el Norte de la Argentina: V. taylorii, conocida para las selvas de Yungas y Paranaense; V. subxerophytica, conocida exclusivamente para los bosques xerófilos de ... -
Chromosome numbers and DNA content in some species of mecardonia (gratiolae, plantaginaceae)
(Pensoft Publishers, 2016-12-14)Cytogenetic characterization and determination of DNA content by flow cytometry of five species of Mecardonia Ruiz et Pavon, 1798 (Gratiolae, Plantaginaceae) was performed. This is the first study of nuclear DNA content ... -
First description of the male of the spider tibellus paraguensis Simon, 1897 (araneae: philodromidae), with new distribution records
(Magnolia Press, 2016)The genus Tibellus Simon, 1875 currently includes 51 species (WSC 2016); it presents some taxonomic difficulties, due to morphological variability, and similarities among some congeners (Efimik 1999). Studies on the genus ... -
Explaining coexistence of nitrogen fixing and non-fixing rhizobia in legume-rhizobia mutualism using mathematical modeling
(Elsevier, 2017)In the mutualism established between legumes and soil bacteria known as rhizobia, bacteria from soil infect plants roots and reproduce inside root nodules where they fix atmospheric N 2 for plant nutri- tion, receiving ... -
New species of the Heterodermia comosa-group (Physciaceae, lichenized Ascomycota) from southern South America
(Association des Amis des Cryptogames, 2017)A revision of the specimens from southern South America deposited at CTES herbarium identified as Heterodermia comosa (Eschw.) Follmann & Redón was made. As result, four new species, viz. H. mobergiana Michlig, M.P. Rodríguez ... -
Phytoplankton of the Paraguay and Bermejo rivers
(E. Schweizerbartsche Verlags, 2014)This article deals with the phytoplankton of the Paraguay and Bermejo rivers, with emphasis on the spatial and temporal patterns of its composition, density, biomass, diversity and community size structure. The ... -
Phytoplankton of the Chaco-pampean plain
(E Schweizerbartsche Verlags, 2014)This article summarizes the characteristics of phytoplankton of the Chaco-Pampean Plain between the Pilcomayo River (25º15’S; 57º45’W) and the Lower Salado River (31º39’S; 60º45’W) towards the Paraguay-Paraná system. ... -
Cytogenetic evidences on the evolutionary relationships between the tetraploids of the section rhizomatosae and related diploid species (arachis, leguminosae)
(The Botanical Society of Japan, 2017)Rhizomatosae is a taxonomic section of the South American genus Arachis, whose diagnostic character is the presence of rhizomes in all its species. This section is of particular evolutionary interest because it has three ... -
Análisis cromosómico del híbrido arachis pintoi x a. repens (leguminosae) mediante citogenética clásica y molecular
(Sociedad Argentina de Botánica, 2013)El análisis cariotípico fue realizado en las especies parentales Arachis pintoi y A. repens, y el híbrido interespecífico. Las tres entidades presentan la misma fórmula cariotípica (18m+2sm) y un par de cromosomas ... -
Desarrollo embrionario y retención intrauterina en colúbridos del nordeste de Argentina
(Asociación Herpetológica Española, 2013)En los reptiles escamosos se reconocen dos modelos de desarrollo: oviparidad y viviparidad. Estos se consideran parte de un continuo y se ha planteado en numerosos trabajos que el patrón vivíparo habría evolucionado ... -
How does a viviparous semifossorial lizard reproduce? Ophiodesintermedius (squamata : anguidae) from subtropical climate in theWet Chaco region of Argentina
(Elsevier, 2017)The best predictors of reproductive patterns are commonly associated with climate factors, but evolu-tionary history also plays an important role. The semifossorial and viviparous lizard Ophiodes intermediusfrom the Wet ... -
Primer registro de termiteros fósiles para el pleistoceno tardío de la región mesopotámica (Argentina) : implicancias paleoambientales
(Universidad Nacional de Colombia. Facultad de Ciencias, 2016)En esta contribución se da a conocer el primer registro de termiteros fósiles para la región Mesopotámica de Argentina, y su disposición espacial, al tiempo que se discuten sus afinidades taxonómicas ... -
Experience to use of ict in the teaching-learning in virtual environments of algebra
(2016)We presented a technology development experience and teaching method in virtual environments distance and face that contribute to solving the problems caused by the massiveness. The experience took place in the subject ... -
Aggregation operators review-mathematical properties and behavioral measures
(Modern Education and Computer Science Press, 2015)A problem that humans must face very often is that of having to add, melt or synthesize information, that is, combine together a series of data from various sources to reach a certain conclusion or make a certain decision. ... -
Nectandra megapotamica (spreng.) mez : phytochemical characterization and neutralizing effect on bothrops diporus venom
(Taylor & Francis, 2014)Antisnake activity of extracts and essential oil of Nectandra megapotamica was tested in vitro against the Bothrops diporus venom (yarará chica). Inhibitory activity of the hemolytic action on the aqueous extract and ... -
Perspectives of new decision making models of processes synchronization in distributed systems
(Khalsa Publications, 2014)In the groups of processes in distributed systems is necessary to make decisions based on agreements; these processes may operate in distributed teams; processes may require the use of shared resources in the form of ...
