Cali, Colombia
Cali, Colombia

The University of Valle , also called Univalle, is a public, departmental, coeducational, research university based primarily in the city of Cali, Valle del Cauca, Colombia. It is the largest higher education institution by student population in the southwest of the country, and the third in Colombia, with more than 30,000 students. The university was established by ordinance No. 12 of 1945, by the Departmental Assembly as the Industrial University of Valle del Cauca , under the leadership of Tulio Ramírez Rojas and Severo Reyes Gamboa.The university has two campuses in Cali. The main one, known as University City of Melendez , is located in the southern neighborhood of Melendez and hosts the faculties of Engineering, Humanities, Integrated Arts, science, and Social science and Economics, as well as the institutes of Education and Pedagogy, and Psychology. Its second one, located in the centric San Fernando neighborhood, hosts the faculties of Administration science and Health. The university also has several satellite campuses across the department in the cities of Buenaventura, Buga, Caicedonia, Cartago, Palmira, Tuluá, Yumbo, and Zarzal, and one campus in the neighboring Cauca department in the city of Santander de Quilichao. The university offers education at technological, undergraduate and postgraduate levels, with 258 academic programs, which includes 65 master and medical specialties, and 8 doctorates. Also, it hosts an excellence research center, six research centers, three research institutes, and 204 research groups.The university is member of several university organizations including the Association of Colombian Universities , the Iberoamerican Association of Postgraduate Universities , and the Iberoamerican University Network Universia. The Valle, National and Antioquia universities form what is known as the Golden Triangle of higher education in Colombia, being among the most selective and competitive universities in the country. It is one of the 15 universities in the country to have received a high quality institutional accreditation by the Ministry of Education, through resolution 2020 of June 3, 2005. The accreditation was for eight years, making the university one of only a few to be accredited for such a duration. The University is considered a premier school in the country and usually excels in its Health and Engineering programs. Wikipedia.

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Agency: European Commission | Branch: FP7 | Program: CP-FP-SICA | Phase: SSH.2012.2.1-2 | Award Amount: 1.33M | Year: 2013

DESAFIO means challenge in both Portuguese and Spanish. The guiding concept of our proposal is to make a contribution towards tackling what is arguably one of the major challenges facing Brazil and Latin American countries in the 21st century: eradicating structural social inequality in the access to essential water and sanitation services. The overarching objective of our proposal is assessing existing experiences and developing new strategies that bring about sustainable, appropriate, and innovative socio-technical solutions to foster economic and social development through social transformation in vulnerable communities, particularly with reference to access to safe water supply and sanitation in urban, peri-urban, and rural areas of South America, with a particular emphasis on Brazil. These strategies will be developed through research and networking that actively engages beneficiary communities, practitioners, local authorities, and other relevant actors in their planning, design, assessment, implementation, monitoring, validation, and diffusion. Our transdisciplinary approach is predicated on a close interaction with non-academic actors in the production and validation of knowledge, among other things to underpin policy and behavioural transformations. We have selected a number of case studies that will cover a range of situations and characteristics, from informal settlements in the urban periphery of world megacities (Rio de Janeiro, Brazil) and in peri-urban areas of provincial capitals (Cali, Colombia), favelas located in the heart of booming mid-range urban centres (Recife, Brazil), to small rural villages (Mondomo, Colombia) and communities in semi-arid areas (Cear and Minas Gerais, Brazil and Santa Fe, Argentina). We will endeavour to draw lessons and develop recommendations that are applicable to other socio-cultural and economic contexts across the developing world.

Agency: European Commission | Branch: H2020 | Program: RIA | Phase: SC1-PM-22-2016 | Award Amount: 12.56M | Year: 2016

The ZikaPLAN initiative combines the strengths of 25 partners in Latin America, North America, Africa, Asia, and various centres in Europe to address the urgent research gaps (WP 1-8) in Zika, identifying short-and long term solutions (WP 9-10) and building a sustainable Latin-American EID Preparedness and Response capacity (WP 11-12). We will conduct clinical studies to further refine the full spectrum and risk factors of congenital Zika syndrome (including neurodevelopmental milestones in the first 3 years of life), and delineate neurological complications associated with Zika due to direct neuroinvasion and immune-mediated responses. Laboratory based research to unravel neurotropism, investigate the role of sexual transmission, determinants of severe disease, and viral fitness will envelop the clinical studies. Burden of disease and modelling studies will assemble a wealth of data including a longitudinal cohort study of 17,000 subjects aged 2-59 in 14 different geographic locations in Brazil over 3 years. Data driven vector control and vaccine modelling as well as risk assessments on geographic spread of Zika will form the foundation for evidence-informed policies. The Platform for Diagnostics Innovation and Evaluation will develop novel ZIKV diagnostic tests in accordance with WHO Target Product Profiles. Our global network of laboratory and clinical sites with well-characterized specimens is set out to accelerate the evaluation of the performance of such tests. Based on qualitative research, we will develop supportive, actionable messages to affected communities, and develop novel personal protective measures. Our final objective is for the Zika outbreak response effort to grow into a sustainable Latin-American network for emerging infectious diseases research preparedness. To this end we will engage in capacity building in laboratory and clinical research, collaborate with existing networks to share knowledge and tackle regulatory and other bottlenecks.

Ramirez-Velez R.,University of Valle
The journal of obstetrics and gynaecology research | Year: 2011

To evaluate the effect of regular aerobic exercise on the endothelial function and cardiorespiratory fitness in pregnant women. This was a randomized, double-blinded, controlled clinical trial of 64 healthy primigravid women between 16 and 20 weeks' gestation. The experimental group took part in aerobic exercise at an intensity of 50-65% of their maximum heart rate for 60 min, three times a week for 16 weeks. The control group undertook their usual physical activity. The outcomes were the endothelial function evaluated by flow-mediated dilatation and cardiorespiratory fitness evaluated by the maximum indirect oxygen consumption (VO2max) in a 6-min walk test. Initially, no differences were found between the groups in any of the variables. At the end of the intervention, the participants that performed exercise showed a higher cardiorespiratory fitness, measured by the walked distance in the 6-min walk test (P = 0.014) and by the VO2max (P = 0.014). Also, the exercise group showed a lower heart rate at rest and a higher flow-mediated dilatation than the control group (P = 0.02). Regular aerobic exercise improves endothelium-dependent vasodilation in pregnancy. This intervention may be an early and effective alternative to strengthen the prevention of disorders associated to endothelial dysfunction. © 2011 The Authors. Journal of Obstetrics and Gynaecology Research © 2011 Japan Society of Obstetrics and Gynecology.

Zeolite NaX (commonly known as zeolite 13X) has found wide use in industry for the separation of carbon dioxide from air, methane-containing landfill gas, and flue gases. Capture and sequestration of carbon dioxide has become of utmost importance to mitigate severe environmental problems associated to burning of fossil fuels, such as the greenhouse effect and the consequential warming of global climate. Due to its low energy consumption and ease of operation, the zeolite-13X molecular-sieve pressure-swing adsorption process has become the method of choice for the recovery and capture of carbon dioxide from air and flue gas. Accurate correlation of the equilibrium adsorption isotherms of carbon dioxide in zeolite NaX is required for the reliable modeling and simulation of that process. In this paper, we firstly show that none of the traditional adsorption isotherm models (such as those of Langmuir, Sips, Toth, UNILAN, and Dubinin-Astakhov) is entirely capable of correlating a published set of equilibrium adsorption isotherms of carbon dioxide in zeolite NaX that were measured over a range of eight decades of pressure. A generalized statistical thermodynamic adsorption (GSTA) model, which we had already derived and successfully applied to the adsorption of water vapor in zeolite 3A, is employed in this work to obtain a very accurate correlation of that set of adsorption isotherms of carbon dioxide in zeolite NaX, for the pressure range from 0.2 Pa to 6.4 MPa and in the temperature range from -78 to 150 °C. We also provide thermochemical and structural interpretations of the isotherms fit and make predictions for the isosteric heat of adsorption that are in excellent agreement with the available experimental data. © 2010 Elsevier B.V. All rights reserved.

Granda L.N.,University of Valle
Journal of Cosmology and Astroparticle Physics | Year: 2010

We study a scalar field with kinetic term coupled to itself and to the curvature, as a source of dark energy, and analyze the role of this new coupling in the accelerated expansion at large times. In the case of scalar field dominance, the scalar field and potential giving rise to power-law expansion are found in some cases, and a dynamical equation of state is calculated for a given solution of the field equations. A behavior very close to that of the cosmological constant was found. © 2010 IOP Publishing Ltd and SISSA.

In this study, white cast iron with 7.39% Cr was casted into an exothermic mold on a copper chill plate to solidify unidirectionally. The microstructure is composed of oriented M3C carbides and ledeburitic matrix. The specimens were cut both parallel and transversally to the billet axe and pin-abrasion tests were carried out using fixed alumina abrasive grains at loads between 2 and 15N. The microhardness, elastic modulus and fracture toughness were determined using an indentation technique on transversal and longitudinal directions. The abrasion resistance was correlated with the carbides microhardness and fracture toughness. The M3C carbides showed similar values of fracture toughness in both directions. The carbides in transversal direction showed higher hardness and elastic modulus than longitudinal carbides. The results reveal that for lower loads the mass loss is similar in both directions. However, for loads higher than 10N the M3C carbides in the transversal direction show higher abrasion resistance than longitudinal carbides. The wear surface was examined by scanning electron microscopy for identifying the wear micromechanisms. Bending and slip planes on longitudinal cementite were observed at 15N. © 2011 Elsevier B.V.

In this study two white cast irons with different chromium contents 13.81% and 24.41% were solidified unidirectionally. Their microstructures are composed of oriented M7C3 carbides and eutectic matrices. The specimens were cut parallel and transversally to the billet axe and pin-abrasion tests were carried out using fixed alumina abrasive grains. The microhardness, elastic modulus and fracture toughness were determined using an indentation technique on transversal and longitudinal sections of the M7C3 carbides. M7C3 carbides show higher microhardness in transverse than in longitudinal direction. Longitudinal M7C3 carbides show higher fracture toughness in the direction perpendicular to the larger edge of the carbide than either parallel to the larger edge or on the transverse section. The results reveal that the white cast iron presents higher abrasion resistance in transverse section than in longitudinal section of the M7C3 carbides. The wear surface was examined by scanning electron microscopy for identifying the wear micromechanisms and was correlated with the fracture toughness of the carbides. The results show that when the carbides fracture, the cracks propagate parallelly to the larger edge of the M7C3, the direction where the fracture toughness is lower. © 2010 Elsevier B.V.

The present invention discloses a process for the manufacture of a thin-film multilayered coating used in treating biomedical substrates and a coating in multilayered thin-film form (S/TiN/Ti/TiZr) to treat biomedical substrates used in surgical implants.

The present invention is related to a novel process for the preparation of chitin-glucan or chitosan-glucan complexes from raw materials of biological origin rich in chitin, such as mycelium of micro-fungi and exoskeletons of crustaceans, where the product obtained presents a chitin proportion between 19 and 55% and average molecular weight between 1.7 and 155 kDa.

Method for production of cellulose and hemicellulose fibers from lignocellulose biomass obtained from sugarcane leaves and buds by applying a process comprising the stages of: a) Diminishing the particle size of the lignocellulose biomass to a range between 3 and 15 mm, b) Subjecting the product obtained to treatment with one or more solvents and/or a mixture of specific catalysts, c) Carry out sudden decompression to an atmospheric pressure, d) Collecting the pretreated material in a cyclone, e) Optionally separating the liquid and solid fractions through washing and filterung f) Optionally, treating the solid fraction in a reactor with a mixture of ethanol and chlorine dioxide, d) Wash the product obtained to achieve cellulose efficiency above 50% and of lignin of 5 to 7%, fiber lengtht in a range to 1.5 to 2.7 mm, breaking length (km) of 7.0 -8.9, Burst index (kPam^(2)/g) of 4.5-7.2 and Tear index (mNm^(2)/g) of 8.2-8, The obtained high-resistance cellulose and hemicellulose is especially suitable for the paper production and polymer-type plastics.

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