The condition for the vanishing of the Weyl tensor is integrated in the spherically symmetric case. Then, the resulting expression is used to find new, conformally flat, interior solutions to Einstein equations for locally anisotropic fluids. The slow evolution of these models is contrasted with the evolution of models with similar energy density or radial pressure distribution but non-vanishin...

This multicenter case control study investigated, in four countries of America, the proportions of acute myocardial infarction (AMI) attributable to cholesterol, smoking, hypertension, body mass index, diabetes and family history of coronary heart disease (attributable risks, AR). AR were estimated using information from 1060 cases of AMI and 1071 controls from Argentina, 323 cases of AMI and 3...

this study investigates the causal linkages between military spending and economic growth in opec selected countries (i.e. algeria, angola, nigeria, venezuela, iran, kuwait, saudi arabia and ecuador) by focusing country-specific analysis for the period 1995–2012. for this, the panel causality testing approach, the method developed by emirmahmutoglu and kose (2011) based on the vector autoregres...

this paper investigates the impact of oil revenues on the output of economic sectors in some of oil exporting countries including iran, venezuela and mexico. we use cointegration analysis as well as short run and long run granger casualties' tests. the results show that in the long run, an oil boom leads to expansion of service sector, in these countries. also, the impacts of oil revenues ...

For slowly rotating fluids, we establish the existence of a critical point similar to the one found for non-rotating systems. As the fluid approaches the critical point, the effective inertial mass of any fluid element decreases, vanishing at that point and changing of sign beyond it. This result implies that first order perturbative method is not always reliable to study dissipative processes ...

a Environmental Change Institutue, School of Geography and Environment, University of Oxford, United Kingdom b School of Industrial and Systems Engineering, University of Oklahoma, United States Engineering Management Program, System Development and Maturity Lab, School of Systems and Enterprises, Stevens Institute of Technology, United States d Facultad de Ingenieria, Universidad Central de Ve...

An endemic focus of onchocerciasis, the so-called “‘river blindness” widespread in parts of Africa, has been discovered in Brazil. Until recently the only confirmed foci ! in this Hemisphere were in Guatemala, Mexico, Colombia, and Venezuela. The research confirming this new Brazilian focus indicates the disease has spread over a fairly large swath of backlands in the vicinity of the Brazil-Ven...

Sucre municipality is a large, densely populated marginal area in the eastern part of Caracas, Venezuela that consistently has more cases of tuberculosis than other municipalities in the country. To identify the neighborhoods in the municipality with the highest prevalence of tuberculosis, and determine whether the Mycobacterium tuberculosis strain distribution in this municipality is different...

BACKGROUND The prevalence of dyslipidemia in multiple regions of Venezuela is unknown. The Venezuelan Metabolic Syndrome, Obesity and Lifestyle Study (VEMSOLS) was undertaken to evaluate cardiometabolic risk factors in Venezuela. OBJECTIVE To determine the prevalence of dyslipidemia in five populations from three regions of Venezuela. METHODS During the years 2006 to 2010, 1320 subjects age...

The existence of Rhodnius robustus as a species distinct from Rhodnius prolixus has long been the main epidemiological question about Chagas disease transmission in Venezuela and surrounding countries. These two taxa are morphologically and genetically very similar, but only R. prolixus is assumed to colonize houses and transmit Chagas disease to humans. R. robustus is assumed to be an exclusiv...