Entity

Time filter

Source Type

Cravo Norte, Colombia

Canon-Franco W.A.,University of Sao Paulo | Canon-Franco W.A.,University of Caldas | Lopez-Orozco N.,University of Sao Paulo | Gomez-Marin J.E.,University of Quindio | Dubey J.P.,U.S. Department of Agriculture
Parasites and Vectors | Year: 2014

This paper summarizes prevalence of Toxoplasma gondii in humans and animals and associated correlates of infection, clinical spectrum of disease in humans, and genetic diversity of T. gondii isolates from Colombia. Recent studies, especially in the states of Antioquia, Quindío and Cundinamarca, indicate that toxoplasmosis is a major public health problem. Approximately half of the women of child bearing age have T. gondii antibodies, and the clinical disease in congenitally infected children is more severe than in Europe. Limited studies indicate that the strains of T. gondii from Colombia are genetically and phenotypically different than in Europe and North America. However, epidemiological factors, such as the involvement of domestic and/or wild animals in transmission, the distribution of strain diversity by natural geographic regions, and the variation in risk factors between regions that are associated with human infection in Colombia, remain unknown. Areas of research for the future are outlined. This review should be of interest to biologists, veterinarians, physicians, and parasitologists. © 2014Cañón-Franco et al.; licensee BioMed Central Ltd. Source


Gomez Yepes M.E.,University of Quindio | Cremades L.V.,Polytechnic University of Catalonia
Industrial Health | Year: 2011

Study characterized and analyzed form factor, elementary composition and particle size of wood dust, in order to understand its harmful health effects on carpenters in Quindío (Colombia). Once particle characteristics (size distributions, aerodynamic equivalent diameter (Da), elemental composition and shape factors) were analyzed, particles were then characterized via scanning electron microscopy (SEM) in conjunction with energy dispersive X-ray analysis (EDXRA). SEM analysis of particulate matter showed: 1) cone-shaped particle ranged from 2.09 to 48.79 μm D a; 2) rectangular prism-shaped particle from 2.47 to 72.9 μm D a; 3) cylindrically- shaped particle from 2.5 to 48.79 μm D a; and 4) spherically-shaped particle from 2.61 to 51.93 μm D a. EDXRA reveals presence of chemical elements from paints and varnishes such as Ca, K, Na and Cr. SEM/EDXRA contributes in a significant manner to the morphological characterization of wood dust. It is obvious that the type of particles sampled is a complex function of shapes and sizes of particles. Thus, it is important to investigate the influence of particles characteristics, morphology, shapes and Da that may affect the health of carpenters in Quindío. Source


Minoli C.A.A.,Florida State University | Minoli C.A.A.,University of Quindio | Kopriva D.A.,Florida State University
Journal of Computational Physics | Year: 2011

We derive and evaluate high order space Arbitrary Lagrangian-Eulerian (ALE) methods to compute conservation laws on moving meshes to the same time order as on a static mesh. We use a Discontinuous Galerkin Spectral Element Method (DGSEM) in space, and one of a family of explicit time integrators such as Adams-Bashforth or low storage explicit Runge-Kutta. The approximations preserve the discrete metric identities and the Discrete Geometric Conservation Law (DGCL) by construction. We present time-step refinement studies with moving meshes to validate the approximations. The test problems include propagation of an electromagnetic gaussian plane wave, a cylindrical pressure wave propagating in a subsonic flow, and a vortex convecting in a uniform inviscid subsonic flow. Each problem is computed on a time-deforming mesh with three methods used to calculate the mesh velocities: from exact differentiation, from the integration of an acceleration equation, and from numerical differentiation of the mesh position. © 2010 Elsevier Inc. Source


Restrepo J.P.,University of Quindio | Molina M.P.,SOS
Clinical Rheumatology | Year: 2010

Ocular features may occur in longstanding rheumatoid arthritis. Among them, scleritis represents the most frequent manifestation of ophthalmologic rheumatoid disease. There are three types of anterior scleritis: diffuse, nodular, and necrotizing with and without inflammation (scleromalacia perforans). Nodular scleritis is the second cause of anterior scleritis representing 20% of all types of scleritis. The conventional treatment of nodular scleritis consists in topical steroids and DMARDS. In severe cases, the therapy with immunosuppressive agents to avoid complications is necessary. We describe a 46-year-old woman presented right nodular scleritis with rheumatoid arthritis. She was treated initially with topical steroids and DMARDs but was unable to received systemic steroids due to left open angle glaucoma in the opposite eye. After an ocular exacerbation, we initiated adalimumab with complete resolution of nodular scleritis. This is the first report of adalimumab in the treatment of nodular scleritis. Adalimumab could be a good alternative in patients with severe nodular scleritis who fail to have conventional treatment with DMARDs and unable to receive systemic steroids. © 2010 Clinical Rheumatology. Source


A new species of Columnea belonging to the section Collandra (Gesneriaceae) from La Serranía de los Paraguas in the Department of Valle del Cauca (Cordillera Occidental), Colombia, is described and illustrated. Source

Discover hidden collaborations