403,471 research outputs found
Inventario de avifauna del norte de Entre RÃos, Argentina: registros notables y perspectivas de conservación
Biodiversity inventories remain fundamental tools for biodiversity conservation. Neotropical biota has poor faunal inventories. In Argentina, the avifauna of the province of Entre RÃos is still not well known. Here, we present the first exhaustive bird inventory of Northern Entre RÃos. We recorded 317 bird species. Three species were new for the province of Entre RÃos and eight were new for Northern Entre RÃos. We recorded 17 threatened species, 4 biome-restricted species and two restricted range species. The high bird diversity of Northern Entre RÃos contrasts with the lack of effective reserves to ensure the survival of endangered species. Creation of natural reserves in this area is urgent. These protected areas should have a management plan and stable park rangers assigned, to ensure the protection of the avian diversity of Northern Entre RÃos.Los inventarios de Biodiversidad siguen siendo herramientas fundamentales para la conservación de la biodiversidad. La biota neotropical posee inventarios incompletos de fauna. En Argentina, la avifauna de la provincia de Entre RÃos permanece poco estudiada. Presentamos el primer inventario exhaustivo de aves para el norte de Entre RÃos. Registramos 317 especies de aves, tres son nuevas para la provincia de Entre RÃos y ocho son nuevas para el norte de Entre RÃos. Diecisiete especies están consideradas amenazadas, 4 son especies restringidas a un bioma y dos especies son de rango restringido. La alta diversidad de aves del norte de Entre RÃos contrasta con la falta de reservas efectivas que puedan asegurar la supervivencia de las especies amenazadas. La creación de reservas naturales en esta región es urgente. Estas áreas protegidas deberÃan tener planes de manejo y guardaparques estables asignados, para asegurar la protección de la diversidad de aves del norte de Entre RÃos.Fil: Dardanelli, Sebastián. Consejo Nacional de Investigaciones CientÃficas y Técnicas; Argentina. Instituto Nacional de TecnologÃa Agropecuaria. Centro Regional Buenos Aires Norte. Estación Experimental Agropecuaria Delta del Paraná; ArgentinaFil: Reales, César Fabricio. Provincia de Entre RÃos. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción. Universidad Autónoma de Entre RÃos. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro CientÃfico Tecnológico Conicet - Santa Fe. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción; ArgentinaFil: Sarquis, Juan Andrés. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro CientÃfico Tecnológico Conicet - La Plata. Instituto de LimnologÃa "Dr. Raúl A. Ringuelet". Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de LimnologÃa; Argentin
Colon adenocarcinoma diagnosis in human samples by multicontrast nonlinear optical microscopy of hematoxylin and eosin stained histological sections
Combined multimodal nonlinear optical (NLO) microscopies were used to detect and quantify morphological changes associated with stroma and epithelial transformation in colon cancer. Our findings provide complementary information about tissue microstructure, displaying distinctive patterns between normal and malignant human colon. Additionally, we have demonstrated the usefulness of using fixed tissues for the disease diagnostic and prognostic. The present work provides a framework for using NLO techniques as a clinical diagnostic tool for human colon cancer. NLO metrics could be applied to other disorders, which are characterized by abnormal cell proliferation and collagen assembly.Fil: Adur, Javier Fernando. Universidad Nacional de Entre RÃos. Facultad de IngenierÃa; Argentina. National Institute of Science and Technology on Photonics Applied to Cell Biology; Brasil. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro de Investigaciones y Transferencia de Entre RÃos. Universidad Nacional de Entre RÃos. Centro de Investigaciones y Transferencia de Entre RÃos; ArgentinaFil: Bianchi, Mariana. Universidad Nacional de Entre RÃos. Facultad de IngenierÃa; Argentina. Consejo Nacional de Investigaciones CientÃficas y Técnicas; ArgentinaFil: Pelegati, Vitor B.. National Institute of Science and Technology on Photonics Applied to Cell Biology; BrasilFil: Viale, Silvia. Universidad Nacional de Entre RÃos. Facultad de IngenierÃa; ArgentinaFil: Izaguirre, MarÃa Fernanda. Universidad Nacional de Entre RÃos. Facultad de IngenierÃa; ArgentinaFil: Carvalho, Hernandes Faustino. Universidade Estadual de Campinas; BrasilFil: Cesar, Carlos L.. Universidade Estadual de Campinas; BrasilFil: Casco, Victor Hugo. Universidad Nacional de Entre RÃos. Facultad de IngenierÃa; Argentin
Adversarial Risk Analysis: The Somali Pirates case
Some of the current world’s biggest problems revolve around security issues. This has raised recent interest in resource allocation models to manage security threats, from terrorism to organized crime through money laundering. One of those approaches is adversarial risk analysis, which aims at dealing with decision making problems with intelligent opponents and uncertain outcomes. We show here how such framework may cope with a current important security issue in relation with piracy in the Somali coasts. Specifically, we describe how to support the owner of a ship in managing risks from piracy in that area. We illustrate how a sequential defend-attack-defend model can be used to formulate this decision problem and solve it for the ship owner. Emphasis will be put on explaining how we can model the Pirates thinking in order to anticipate their behavior and how it would lead to a predictive probability distribution, from the defender’s perspective, over what the Pirates may do
Notas sobre la nidificación del Chopà (Gnorimopsar chopi) en Argentina y Paraguay, con datos de crÃa cooperativa y de parasitismo de crÃa por el Tordo Pico Corto (Molothrus rufoaxillaris)
Fil: Fraga, Rosendo Manuel. Provincia de Entre RÃos. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción. Universidad Autónoma de Entre RÃos. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro CientÃfico Tecnológico Conicet - Santa Fe. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción; Argentin
Adversarial Risk Análysis for Counterterrorism Modelling
Recent large scale terrorist attacks have raised interest in models for resource allocation against terrorist threats. The unifying theme in this area is the need to develop methods for the analysis of allocation decisions when risks stem from the intentional actions of intelligent adversaries. Most approaches to these problems have a game theoretic flavor although there are also several interesting decision analytic based proposals. One of them is the recently introduced framework for adversarial risk analysis, which deals with decision making problems that involve intelligent opponents and uncertain outcomes. We explore how adversarial risk analysis addresses some standard counterterrorism models: simultaneous defend-attack models, sequential defend-attack-defend models and sequential defend-attack models with private information. For each model, we first assess critically what would be a typical game theoretic approach and then provide the corresponding solution proposed by the adversarial risk analysis framework, emphasizing how to coherently assess a predictive probability model of the adversary’s actions, in a context in which we aim at supporting decisions of a defender versus an attacker. This illustrates the application of adversarial risk analysis to basic counterterrorism models that may be used as basic building blocks for more complex risk analysis of counterterrorism problems
Effects of Incubation and Rearing Temperatures on Caiman latirostris Growth
Different studies found that incubation temperature has an influence on the size of Caiman latirostris hatchlings and determines their gonadal sex. Experimental manipulations revealed that the effects of temperature on growth are independent of sex. Ambient temperature after hatching is also an influential factor: juvenile caiman had lower growth at a cool (29°C) vs. a warm temperature (33°C) independent of incubation temperatures. Two-month-old caiman were raised at 2 different temperatures (29 and 33°C) for 100 d. These animals were subjected to different incubation treatments: 29, 31 (females), 33 (males), and 33°C with 17β-estradiol (females). No differences were found in growth based on incubation temperature or sex. Our data indicate that the evolutionary advantage of a temperature-dependent sex determination, if it exists, is not bound to differential growth between the sexes nor to incubation temperature, at least in the 1st stages of life before hatchlings reach their 1st winter. Temperatures during the development and grow-out phases have direct effects on the size of the broad-snouted caiman.Fil: Parachu Marco, Maria Virginia. Proyecto Yacaré; Argentina. Provincia de Entre RÃos. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción. Universidad Autónoma de Entre RÃos. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro CientÃfico Tecnológico Conicet - Santa Fe. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción; ArgentinaFil: Piña, Carlos Ignacio. Provincia de Entre RÃos. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción. Universidad Autónoma de Entre RÃos. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro CientÃfico Tecnológico Conicet - Santa Fe. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción; Argentina. Proyecto Yacaré; Argentina. Universidad Autónoma de Entre RÃos; ArgentinaFil: Simoncini, Melina Soledad. Provincia de Entre RÃos. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción. Universidad Autónoma de Entre RÃos. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro CientÃfico Tecnológico Conicet - Santa Fe. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción; Argentina. Proyecto Yacaré; ArgentinaFil: Larriera, Alejandro. Proyecto Yacaré; Argentina. Universidad Nacional del Litoral. Facultad de Humanidades y Ciencias; Argentin
A substitute name for Turdus serranus unicolor Olrog & Contino
Fil: Fraga, Rosendo Manuel. Provincia de Entre RÃos. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción. Universidad Autónoma de Entre RÃos. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro CientÃfico Tecnológico Conicet - Santa Fe. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción; ArgentinaFil: Dickinson; E.. Bolsover Court; Reino Unid
Oregano essential oils: Antimicrobial activity and its application to films based on cornstarch and glycerol
This trend has led to research on the development of new biodegradable packaging materials from natural polymers also suggests that several materials may be incorporated into edible films and have influence on the mechanical, protective and sensory properties. The objective of this work was to characterize oregano essential oils and incorporated edible films made with cornstarch and glycerol. The oregano essential oil obtain the raw material used was the variety Italian Oregano or Origanum majorana using a Clevenger-type apparatus. The study included the refractive index, chemical composition, color at day 0 and day 10 and antimicrobial activity of Salmonella Enteritidis and Escherichia Coli O157:H7. The films were prepared according to the method of casting, cornstarch, glycerol (plasticizer) and water. To assess the effect of the composition on the physical properties of films, the experiment was arranged in a 22 factorial design, with one central point. It analyzed the transfer of water vapor (Method ASTM E96-92) and color. The film which showed the best characteristics was selected; subsequently oregano essential oil was added. The refractive index of the oregano essential oils obtained from the various extractions varied between 1.4875 and 1.4981. There was a significant difference (P<0.05) between the parameters a* and b* between day 0 and day 10. According to gas chromatography analysis, 52 compounds were identified in oregano essential oil, thymol (31.96%) and carvacrol (0.66%) phenols. The test antimicrobial activity, showed that Salmonella Enteritidis and Escherichia Coli O157:H7 were extremely sensitive to pure essential oil. The films obtained were transparent, presented homogeneous and compact surfaces. The values of permeability to water vapor were between 1.93 x 10-12 and 9.85 x 10-12 (g/m.s.Pa). The Analysis of Variance (ANOVA) indicated a significant differences between the different formulation (P<0.05). The incorporation of oregano essential oil at the formulations influenced the permeability presenting more or less resistant to the passage of water vapor. About the color, incorporating essential oil did not affect the appearance and did not show strong antibacterial activity at the concentration at which it was decided to work.Fil: Córsico, Francisco Armando. Universidad Nacional de Entre RÃos. Facultad de BromatologÃa; ArgentinaFil: Larrosa, Virginia Judit. Universidad Nacional de Entre RÃos. Facultad de BromatologÃa; Argentina. Consejo Nacional de Investigaciones CientÃficas y Técnicas; ArgentinaFil: López Noviello, Luciano Hernán. Universidad Nacional de Entre RÃos. Facultad de BromatologÃa; ArgentinaFil: Altamirano, Alfonsina. Universidad Nacional de Entre RÃos. Facultad de BromatologÃa; ArgentinaFil: Naef, Antonella. Universidad Nacional de Entre RÃos. Facultad de BromatologÃa; ArgentinaFil: Alfaro, Cristina. Universidad Nacional de Entre RÃos. Facultad de BromatologÃa; ArgentinaFil: Garzón, Claudia Guadalupe. Universidad Nacional de Entre RÃos. Facultad de BromatologÃa; ArgentinaFil: Lound, Liliana Haydee. Universidad Nacional de Entre RÃos. Facultad de BromatologÃa; Argentin
Variable Oriole (Icterus pyrrhopterus) breeding in abandoned nests of Red-rumped Caciques (Cacicus haemorrhous) in Misiones, Argentina
Boyerito (Icterus pyrrhopterus) nidificando en nidos abandonados de Cacique Lomo Rojo (Cacicushaemorrhous) en Misiones, Argentina.Fil: Fraga, Rosendo Manuel. Provincia de Entre RÃos. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción. Universidad Autónoma de Entre RÃos. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro CientÃfico Tecnológico Conicet - Santa Fe. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción; Argentin
Clutch size of Caiman latirostris (Crocodylia: Alligatoridae) varies on a latitudinal gradient
The distribution of the Broad-Snouted Caiman (Caiman latirostris) ranges from 5°S to 32°S. Thus, caiman populations are exposed to different climatic conditions, and this latitudinal gradient could affect aspects of their reproduction. In this study we present evidence that there is a positive relationship between clutch size and latitude. A possible effect of smaller clutch size on populations from low latitudes could be increased nesting frequency, thus improving female fitness.Fil: Simoncini, Melina Soledad. Proyecto Yacaré; Argentina. Provincia de Entre RÃos. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción. Universidad Autónoma de Entre RÃos. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro CientÃfico Tecnológico Conicet - Santa Fe. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción; ArgentinaFil: Piña, Carlos Ignacio. Proyecto Yacaré; Argentina. Provincia de Entre RÃos. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción. Universidad Autónoma de Entre RÃos. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro CientÃfico Tecnológico Conicet - Santa Fe. Centro de Investigaciones CientÃficas y Transferencia de TecnologÃa a la Producción; ArgentinaFil: Siroski, Pablo Ariel. Consejo Nacional de Investigaciones CientÃficas y Técnicas; Argentina. Proyecto Yacaré; Argentina. Dirección General de Manejo Sustentable de Fauna y Flora; Argentin
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