نتایج جستجو برای: venezuela
تعداد نتایج: 6264 فیلتر نتایج به سال:
Rhodnius prolixus is the main vector of Chagas disease in Venezuela, where it is found colonising rural housing consisting of unplastered adobe walls with palm and/or metal roofs. Vector control failure in Venezuela may be due to the invasion of houses by silvatic populations of R. prolixus found in palms. As part of a study to determine if domestic and silvatic populations of R. prolixus are i...
Osmel Manzano May 2000. Tax Effects upon Oil Field Development in Venezuela. Important reforms have been made to the oil sector tax code in Venezuela. Given its diversity of oil resources, there was a concern that some resources were not being exploited because of the structure of the tax code. This paper uses traditional theoretical models to review these reforms. Then, a panel of 821 Venezuel...
The article describes two new Pterophoridae species from Venezuela: Postplatyptilia lastukhini Ustjuzhanin & Kovtunovich, sp. n. and stekolnikovi Four species: Stenoptilodesbrevipennis (Zeller, 1874), Adaina costarica Gielis, 1992, desolata Arenberger Bond, 1995 Hellinsia devriesi (Landry 1992) are recorded for the fauna of Venezuela first time.
Estados Unidos ha atribuido a Venezuela, de manera recurrente, algo parecido deslealtad, debido su relación con China; mientras que China sido acusada alterar las reglas del juego en la región, especialmente países democráticamente débiles como Venezuela. En este contexto escalada acusaciones, más allá lo coloquial y paralelismos al referirse si Venezuela infiel tradicional Unidos, el presente ...
The purpose of this paper is to analysis the influence Russia-Ukraine conflict hyperinflation Venezuela. With implementation economic theoretical approaches, aims present a comprehensive overview current development status nation and causes situation during different governmental governances. More importantly, will whether in terms oil market fluctuations geo-political changes can serve as turn...
In the positive definite case, the extreme generalized eigenvalues can be obtained by solving a suitable nonlinear system of equations. In this work, we adapt and study the use of recently developed low-cost derivative-free residual schemes for nonlinear systems, to solve large-scale generalized eigenvalue problems. We demonstrate the effectiveness of our approach on some standard test problems...
OBJECTIVE To investigate the association between Helicobacter pylori infection and anaemia. DESIGN Six cross-sectional studies. H. pylori infection was assessed by the [13C]urea breath test using MS or IR analysis. Hb was measured for all countries. Ferritin and transferrin receptors were measured for Argentina, Bolivia, Mexico, and Venezuela. SETTING Health services in Argentina, Brazil an...
ion Heuristics Extended with Counting Abstractions Blai Bonet Departamento de Computación Universidad Simón Bolı́var Caracas, Venezuela
A study of the convergence properties of spectral projected subgradient method is presented and the convergence is shown. The convergence is based on spectral projected gradient approach. Some updates of the spectral projected subgradient are described.
1. Guzman MG, Kouri G. Dengue: an update. Lancet Infect Dis. 2002;2:33–42. 2. Fisher D. To the vector borne....mosquitotransmitted diseases in Singapore. Singapore Med J. 2005;46:596. 3. Wilder-Smith A, Earnest A, Paton NI. Use of simple laboratory features to distinguish the early stage of severe acute respiratory syndrome from dengue fever. Clin Infect Dis. 2004;39:1818–23. 4. Guzman MG, Kour...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید