نتایج جستجو برای: venezuela

تعداد نتایج: 6264  

2012
Eduardo Suárez-Morales Humberto Camisotti Alberto Martín

During a survey of the zooplankton community of Bahía Amuay, Venezuelan Caribbean, specimens of an undescribed species of Caligus Müller were collected. It resembles Caligus xystercus Cressey and Caligus ocyurus Cressey, both known only from the Caribbean Sea. The new species can be distinguished from these and other congeners by a combination of characters including the armature of legs 1 and ...

2012
Miriam Brito Thaly Fernández-Rodríguez Mario José Garrido Alexander Mejías Mirtha Romano Edgloris Marys

Yardlong bean (Vigna unguiculata subsp. sesquipedalis) plants with virus-like systemic mottling and leaf distortion were observed in both experimental and commercial fields in Aragua State, Venezuela. Symptomatic leaves were shown to contain carlavirus-like particles. RT-PCR analysis with carlavirus-specific primers was positive in all tested samples. Nucleotide sequences of the obtained ampli...

Journal: :Memorias do Instituto Oswaldo Cruz 2006
Flor Herrera Ludmel Urdaneta José Rivero Normig Zoghbi Johanny Ruiz Gabriela Carrasquel José Antonio Martínez Martha Pernalete Patricia Villegas Ana Montoya Yasmin Rubio-Palis Elina Rojas

The mosquito Aedes aegypti is the main vector of dengue in Venezuela. The genetic structure of this vector was investigated in 24 samples collected from eight geographic regions separated by up to 1160 km. We examined the distribution of a 359-basepair region of the NADH dehydrogenase subunit 4 mitochondrial gene among 1144 Ae. aegypti from eight collections. This gene was amplified by the poly...

2008
L. Herrera A. Di Prisco

We describe the departure from equilibrium of matter distributions representing sources for a class of Weyl metric. It is shown that, for extremely high gravitational fields, slight deviations from spherical symmetry may enhance the stability of the system weakening thereby its tendency to a catastrophic collapse. For critical values of surface gravitational potential, in contrast with the exac...

Journal: :Zootaxa 2013
Andrew Edward Z Short Luke Greene Mauricio Garcia

Three new species of Oocyclus Sharp, 1882 are described from tropical South America: O. maluz sp. n. (Venezuela), O. miza sp. n. (Venezuela), and O. brunneus sp. n. (Bolivia). New distributional records are provided for O. andinus Short & García, O. coromoto Short & García (newly recorded from Suriname), O. floccus Short & García (newly recorded from Guyana and Suriname), O. iguazu (Oliva), O. ...

Journal: :Human heredity 2001
R Liascovich M Rittler E E Castilla

A sample of 53,552 nonmalformed liveborn infants was ascertained by the Latin-American Collaborative Study of Congenital Malformations between 1967 and 1996. The mean consanguinity rate was 0.96%, with significantly higher values in Brazil and Venezuela, and lower in Argentina. Low paternal education and occupation levels were positively associated with consanguinity. First-cousin matings repre...

2012
Camille Ramos Adriana Vicentini Daniela Ortega

This paper provides an overview of solid waste management by local authorities in the Sucre municipality in Caracas, Venezuela. Sucre is currently faced with serious demographic, economic, social, urban, and administrative challenges in solid waste management. The municipality, called Petare, has one of the largest slums in Latin America. It is estimated that more than a million people live in ...

2017
A. H. Freeland Barbour

By A. H. Freeland Barbour, M.D., F.R.C.P. Ed. The Venezuela frontier question has not given rise to more discussion than the delimitation of the area of the body of the uterus in labour. The story of the dispute with Venezuela goes back to the map on which Schomburg drew his now famous line. The discussion which has gone on for five and twenty years round the disputed area in the lower portion ...

Journal: :Emerging Infectious Diseases 2008
María C. Martínez Clara N. Gutiérrez Franklin Monger Johanny Ruiz Akemys Watts Victor M. Mijares María G. Rojas Francisco J. Triana-Alonso

To the Editor: Human mono-cytic ehrlichiosis is a tick-borne infectious disease caused by Ehrlichia chaffeensis (1). Serologic studies have indicated E. chaffeensis infection in Latin American countries: Venezuela (2), Mexico (3), Argentina (4), Chile (5), and Brazil (6). However, no molecular evidence for E. chaffeensis has been reported. In December 2001, a 9-year-old boy was admitted to a ho...

2017
Florian Pommerening Malte Helmert Blai Bonet

ion Heuristics, Cost Partitioning and Network Flows Florian Pommerening and Malte Helmert University of Basel, Switzerland {florian.pommerening, malte.helmert}@unibas.ch Blai Bonet Universidad Simón Bolívar, Caracas, Venezuela [email protected]

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