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Aproximadamente 26 registro(s) hasta el momento: (journal)

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Precipitation variability and soil water content in Pampean Flatlands (Argentina)
Forte Lay,J - Scarpati,O - Capriolo,A

Formato:	journal article
Enlaces:	The goal of this paper is to show the precipitation variability in pampean flatlands during the last decades and the consequential changes in soil water content. Two periods of 30 years each (1947-1976 and 1977-2006) were analyzed and an increase…
Fecha:	2008-12-01
Recurso:	SCIELO

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New detailed paleosecular variation record at Santa Lucía archaeological site (Corrientes province, northeastern Argentina)
Nami,Hugo G

Formato:	journal article
Enlaces:	Paleomagnetic data from a sedimentary section from Santa Lucía archaeological site, Corrientes province (Northeastern Argentina) are reported. Natural remanent magnetization obtained from 74 oriented cores showed normal and intermediate magnetic remanence with negative and positive low inclination values during the…
Fecha:	2011-06-01
Recurso:	SCIELO

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Transformations and Challenges of Argentinean Migratory Policy in Relation to the International Context
Novick,Susana

Formato:	journal article
Enlaces:	The purpose of this article is to analyze recent transformations in Argentinean migratory policies since the 2001 crisis, based on the state's passage of laws. The first part provides a brief historical outline approach as the framework and context for…
Fecha:	2012-06-01
Recurso:	SCIELO

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Description of a new species of Ischnodemus from Peru, and the male and immature stages of I. subflavus (Hemiptera: Heteroptera: Lygaeoidea: Blissidae)
Dellapé,Pablo Matías - Montemayor,Sara Itzel

Formato:	journal article
Enlaces:	A new species, Ischnodemus brusai, from Ucayali, Peru is described and illustrated, including characters of the male genitalia. Adult males and females, and immature specimens of I. subflavus Slater and Wilcox 1969 were collected on Sporobolus rigens (Trinius) Desvaux (Poaceae)…
Fecha:	2009-12-01
Recurso:	SCIELO

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Magnetic parameter analysis of a climosequence of soils in the Southern Pampean Region, Argentina
Bartel,Andrea A. - Bidegain,Juan Carlos - Sinito,Ana María

Formato:	journal article
Enlaces:	Magnetic parameters of different soil types from Caleu-Caleu, La Pampa, Tres Arroyos, Buenos Aires province, Argentina show an increase in ferrimagnetic mineral concentrations in the solum. Titanomagnetites are major magnetic minerals in the soils. The distribution patterns of grain size…
Fecha:	2011-03-01
Recurso:	SCIELO

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The species of genus Chasicotatus Scillato-Yané (Eutatini, Dasypodidae)
Scillato-Yané,Gustavo Juan - Krmpotic,Cecilia Mariana - Esteban,Graciela Irene

Formato:	journal article
Enlaces:	Chasicotatus was originally described as a monotypic genus based on Chasicotatus ameghinoi Scillato-Yané, 1979, from the upper member of Arroyo Chasicó Formation (Las Barrancas Member, late Chasicoan). An additional species, Chasicotatus peiranoi , was erected by Esteban and Nasif (1996).…
Fecha:	2010-04-01
Recurso:	SCIELO

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Radiocarbon date on megafauna from the late Pleistocene-early Holocene of Córdoba province, Argentina: Stratigraphic and paleoclimatic significance
Cruz,Laura Edith - Bargo,María Susana - Tonni,Eduardo Pedro - Figini,Aníbal Juan

Formato:	journal article
Enlaces:	A radiocarbon date (7550 ± 60 yr 14C BP) was obtained from bone collagen of an extinct ground sloth (Scelidotherium leptocephalum) from the locality of Río Cuarto (Córdoba province, Argentina). The fossil remains were recovered from the La Invernada Formation…
Fecha:	2010-12-01
Recurso:	SCIELO

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The trilobite Maurotarion megacephalum sp. nov. (Aulacopleuridae) in the Lower Devonian of Argentina: phylogenetic and paleobiogeographic remarks
Rustán,Juan José - Vaccari,N. Emilio

Formato:	journal article
Enlaces:	Maurotarion megacephalum sp. nov., from the Pragian (Lower Devonian) of the Talacasto Formation, Precordillera basin, central-west Argentina, is described and interpreted as the first Malvinokaffric species of the genus outside the endemic subgenus M. (Malvinotarion). Based mainly on librigenal characters,…
Fecha:	2012-08-01
Recurso:	SCIELO

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Digenean parasites of six species of birds from Formosa Province, Argentina
Lunaschi,Lía Inés - Drago,Fabiana Beatriz

Formato:	journal article
Enlaces:	The aim of this paper is to increase the knowledge of the diversity of digenean parasites from birds collected in Formosa Province, Argentina. The helminthological survey of 15 specimens of 6 bird species revealed the presence of 5 digenean species:…
Fecha:	2009-04-01
Recurso:	SCIELO

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10.

A new leech species of Helobdella (Hirudinea, Glossiphoniidae) from San Carlos de Bariloche, Río Negro, Argentina
Gullo,Bettina S.

Formato:	journal article
Enlaces:	A new freshwater leech species Helobdella fantasmae n. sp. is described. This description is based on the examination of 12 specimens collected in Laguna Fantasma, Bariloche (41° 05'S 71° 28'W), during December 2002. Leeches were found attached to submerged plants.…
Fecha:	2009-04-01
Recurso:	SCIELO

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11.

New host records for Anenterotrematidae, Lecithodendriidae and Urotrematidae trematodes in bats from Argentina, with redescription of Anenterotrema liliputianum
Lunaschi,Lía I. - Notarnicola,Juliana

Formato:	journal article
Enlaces:	Anenterotrema liliputianum (Travassos, 1928) (Anenterotrematidae) is redescribed based on the type specimens fromMolossus molossus (Pallas) and Phyllostomus elongatus (Geoffroy) from Brazil, and also on new specimens collected from the Dwarf Dog-faced Bat, Molossops temminckii (Burmeister) (Molossidae) in Argentina. In addition,…
Fecha:	2010-08-01
Recurso:	SCIELO

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12.

Description of the immature stages of Sigara (Tropocorixa) jensenhaarupi (Hemiptera: Heteroptera: Corixidae: Corixini), with ecological notes
Melo,María Cecilia - Scheibler,Erica Elizabeth

Formato:	journal article
Enlaces:	Sigara (Tropocorixa) jensenhaarupi Jaczewski is the smallest species of the subgenus ranging from 4.2-4.7 mm, and it is characterized by the absence of a strigil, the small and narrow genital capsule with a short hypandrium in males, and the shape…
Fecha:	2011-03-01
Recurso:	SCIELO

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13.

A new record for American Bullfrog (Lithobates catesbeianus) in San Juan, Argentina
Sanabria,Eduardo - Ripoll,Yanina - Jordan,Marcelo - Quiroga,Lorena - Ariza,Mariano - Guillemain,María - Pérez,Mauricio - Chávez,Héctor

Formato:	journal article
Enlaces:	We report a new record of Lithobates catesbeianus (American bullfrog) from Argentina. L. catesbeianus was first introduced to San Juan Province 11 years ago in Calingasta Department, where the habitat is pre-cordilleran. The new record is for Zonda Department, San…
Fecha:	2011-03-01
Recurso:	SCIELO

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14.

Wildlife vertebrate mortality in roads from Santa Fe Province, Argentina
Attademo,Andrés M. - Peltzer,Paola M. - Lajmanovich,Rafael C. - Elberg,Gustavo - Junges,Celina - Sanchez,Laura C. - Bassó,Agustín

Formato:	journal article
Enlaces:	Mortality of vertebrates was monitored on 2 roads (National Road 168; NR168 and Provincial Road 1; PR1) in Santa Fe Province (Argentina) from October 2007 to August 2008. These roads differed in traffic volume and surrounding landscape management conditions. We…
Fecha:	2011-09-01
Recurso:	SCIELO

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15.

First record of the chytrid fungus in Lithobates catesbeianus from Argentina: exotic species and conservation
Ghirardi,Romina - López,Javier Alejandro - Scarabotti,Pablo Augusto - Steciow,Mónica Mirta - Perotti,María Gabriela

Formato:	journal article
Enlaces:	Chytridiomycosis, a disease caused by the chytrid fungus Batrachochytrium dendrobatidis (B.d.), is recognized as one of the major factors of amphibian decline. Global trade of amphibians has been identified as one of the causes of B.d. spread, involving hundreds of…
Fecha:	2011-12-01
Recurso:	SCIELO

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16.

Costs of publicly provided maternity services in Rosario, Argentina
Borghi,Josephine - Bastus,Silvia - Belizan,María - Carroli,Guillermo - Hutton,Guy - Fox-Rushby,Julia

Formato:	journal article
Enlaces:	OBJECTIVE: This study estimates the costs of maternal health services in Rosario, Argentina. MATERIAL AND METHODS: The provider costs (US$ 1999) of antenatal care, a normal vaginal delivery and a caesarean section, were evaluated retrospectively in two municipal hospitals. The…
Fecha:	2003-01-01
Recurso:	SCIELO

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17.

Exudate-gathering ants (Hymenoptera: Formicidae) at three different liquid food rewards
BUFFA,Liliana M. - JAUREGUIBERRY,Pedro - DELFINO,Miguel Ángel

Formato:	journal article
Enlaces:	Extrafloral nectaries (EFNs) and hemipteran honeydew are liquid food rewards (FRs) that encourage ant visitation in many plant families in a wide variety of habitats. In this study we explored the diversity, distribution and interactions of exudate-gathering ants at three…
Fecha:	2009-12-01
Recurso:	SCIELO

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18.

Analysis of interdecadal variability of temperature extreme events in Argentina applying EVT
Tencer,B. - Rusticucci,M.

Formato:	journal article
Enlaces:	The frequency of occurrence of temperature extreme events has changed throughout the last century: significant positive trends in warm nights and negative trends in cold nights have been observed all over the world. In Argentina, the probability of occurrence of…
Fecha:	2012-10-01
Recurso:	SCIELO

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19.

Imaging subsurface lithological and structural features by resistivity tomography: North Beagle Channel (Tierra del Fuego, Argentina)
Tassone,Alejandro - Santomauro,Melina - Menichetti,Marco - Cerredo,María Elena - Remesal,Marcela Beatriz - Lippai,Horacio - Lodolo,Emanuele - Vilas,Juan Francisco

Formato:	journal article
Enlaces:	Worldwide, the study of fold and thrust belts and characterization ofstructures are mainly carried out through superficial geological observations and seismic reflection, as the main geophysical prospecting method. In this study we show how the resistivity method is a useful…
Fecha:	2010-12-01
Recurso:	SCIELO

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20.

Modern foraminifera from coastal settings in northern Argentina: implications for the paleoenvironmental interpretation of Mid Holocene littoral deposits
Laprida,Cecilia - Chandler,Damián Diego Enrique - Ramón Mercau,Josefina - López,Rubén Alvaro - Marcomini,Silvia

Formato:	journal article
Enlaces:	In Buenos Aires coasts, sedimentary processes were particularly active during the Quaternary owing to eustatic fluctuations in sea level. As a result, during the late Quaternary transgressions, marine and marginal marine sediments were deposited in the coastal plain. In order…
Fecha:	2011-04-01
Recurso:	SCIELO

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21.

Zeolite assemblages from Northern Patagonian Andes, Argentina: A review
Leal,Pablo Rodrigo - Vattuone,María Elena - Latorre,Carlos Oscar

Formato:	journal article
Enlaces:	In this work very low-grade metamorphic assemblages found in the Northern Patagonian Andes (Argentina) are summarized. On the basis of previous studies, several occurrences of zeolites have been delimited. According to their mineralogy, textures and structures, three different alteration stages…
Fecha:	2011-08-01
Recurso:	SCIELO

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22.

The production of articles on cardiology from Latin America in Medline indexed journals
Borracci,Raúl A. - Di Stéfano,María M. - Voos Budal Arins,Marcel G. - Calderón,José G.E. - Manente,Diego - Giorgi,Mariano A. - Piñeiro,Daniel J. - Dones,Wistremundo

Formato:	journal article
Enlaces:	Introduction: Latin America has dramatically increased the number of articles published from 1995 to 2002, but the individual contribution of each country appears to be very unequal. Objectives: To analyze the production of articles on Cardiology research published in Latin…
Fecha:	2011-12-01
Recurso:	SCIELO

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23.

The life cycle of Zygocotyle lunata (Trematoda, Paramphistomoidea) in the subtropical region of South America
Ostrowski de Núñez,Margarita - Davies,Dora - Spatz,Linus

Formato:	journal article
Enlaces:	The life cycle of the trematode Zygocotyle lunata (Diesing, 1836) is studied, beginning with cercariae from naturally infected Biomphalaria peregrina (d'Orbigny, 1835) and B. tenagophila (d'Orbigny, 1835) from Buenos Aires Province and Salta Province (Argentina), respectively. Adults were recovered from…
Fecha:	2011-06-01
Recurso:	SCIELO

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24.

Threatened Neotropical mollusks: analysis of shape differences in three endemic snails from High Paraná River by geometric morphometrics
Vogler,Roberto E. - Beltramino,Ariel A. - Gutiérrez-Gregoric,Diego E. - Peso,Juana G. - Griffin,Miguel - Rumi,Alejandra

Formato:	journal article
Enlaces:	Variation in shape among a living and 2 extinct aquatic snails of the genus Aylacostoma, using a geometric morphometric method of thin plate splines and multivariate analysis was investigated. The analysis was performed to evaluate the diagnostic capability of this…
Fecha:	2012-12-01
Recurso:	SCIELO

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25.

Interpretation of Las Salinas sedimentary basin-Argentina, based on integration of geological and geophysical data
Azeglio,E. A. - Gimenez,M. E. - Introcaso,A.

Formato:	journal article
Enlaces:	Las Salinas sedimentary basin is located at 31° S and 67° W approximately, in the central-western part of Argentina. Its dimensions are 100 km long, about 50 km wide, plus an average altitude of 500 m above sea level. The…
Fecha:	2010-12-01
Recurso:	SCIELO

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26.

The Arroyo Rojo volcanic-hosted massive sulphide deposit (Tierra del Fuego, southernmost Argentina): geology, mineralogy, petrography and mineral chemistry
Biel,Cecilia - Subías,Ignacio - Fanlo,Isabel - Mateo,Ester - Acevedo,Rogelio Daniel

Formato:	journal article
Enlaces:	The Arroyo Rojo deposit is the most important polymetallic, volcanic-hosted massive sulphide close to the town of Ushuaia in the rhyolitic belt of the Andes of the Tierra del Fuego. The deposit occurs in a region with north-verging thrusts and…
Fecha:	2010-04-01
Recurso:	SCIELO