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Neiva, Colombia

The Universidad Surcolombiana , also known as USCO, is a public, national, university based primarily in the city of Neiva, Huila, Colombia. Wikipedia.

Rodriguez-Calderon W.,University of la Salle of Colombia | Pallares-Munoz M.R.,South Colombian University
DYNA (Colombia) | Year: 2015

The model developed tries to predict the stresses and strains of the structure of the pavement in a more real way, doing a lineal elastic structural analysis in three dimensions with capacity to model loads of double axes, that which constitutes an advance regarding twodimensional axisymmetrical models that only represent the state tense-deformational of the pavement under loads of simple axes. Earlier stages of this research showed two-dimensional models under different load scenarios, league between layers and nonlinear constitutive models, however the purpose is to move towards analysis methodology stress-strain state under standard loads. The model was implemented in the Algor© program and a comparison with the Elsym5 multilayer freeware was performed. The results warn the existence of shear stress concentrations that can be causing major flaws that are not considered in traditional design methods which could lead to the possibility of reassessed. © The author; licensee Universidad Nacional de Colombia. Source

Kesinger M.R.,University of Pittsburgh | Puyana J.C.,University of Pittsburgh | Rubiano A.M.,South Colombian University
World Journal of Surgery | Year: 2014

Background: Standardized trauma protocols (STPs) have reduced morbidity and mortality in mature trauma systems. Most hospitals in low- and middle-income countries (LMICs) have not yet implemented such protocols, often due to financial and logistic limitations. We report preliminary findings from a trauma quality improvement (QI) initiative, using and evaluating the impact of a low-cost STP in an LMIC university hospital. Methods: We developed an STP based on generally accepted best practices and damage control resuscitation. It was designed for the resources available at the test institution. The Neiva University Hospital (NUH) is a tertiary care hospital and level I trauma center in Neiva, Colombia. As in most LMIC hospitals, there was no trauma information data system at NUH. Therefore, we adapted an administrative electronic database to capture clinically relevant information of adult patients who were hospitalized or died in the emergency department (ED) between August 2010 and June 2012 with an International Classification of Diseases, 10th revision (ICD-10) diagnoses indicating trauma (S00-Y98). Interventions that were recommended in the STP were compared in these two groups. Length of hospital stay (LOS) and mortality were also examined. Results: A total of 4,324 patients were included, of whom, 2,457 patients were in the pre-protocol period and 1,867 were in the post-protocol period. The use of several interventions increased: blood product transfusions in the ED (1.0 vs. 2.7 %; p < 0.001), use of hypertonic fluids in hypotensive patients (3.2 vs. 8.9 %; p < 0.001), placement of Foley catheters (11.1 vs. 13.8 %; p = 0.007), arterial blood gas draws (16.6 vs. 26.4 %; p < 0.001), tetanus vaccinations (19.3 vs. 26.0 %; p < 0.001), placement of multiple large bore peripheral catheters (29.5 vs. 34.7 %; p < 0.001), prophylactic antibiotics (34.9 vs. 38.0 %; p = 0.035), and the use of analgesics (64.5 vs. 68.0 %; p = 0.016). Other interventions also trended upwards. Length of stay (LOS) decreased for both surgical and non-surgical patients (surgical 13.4 vs. 11.8 days; p = 0.017; non-surgical 4.4 vs. 3.8 days; p = 0.059). All-cause mortality of trauma patients decreased (3.9 vs. 2.9 %; p = 0.088). Conclusions: The institution of an STP at a university hospital in an LMIC has increased the use of vital interventions while decreasing overall LOS for all-cause trauma patients. © 2014 Société Internationale de Chirurgie. Source

Di Donfrancesco B.,Kansas State University | Gutierrez Guzman N.,South Colombian University | Chambers E.,Kansas State University
Journal of Sensory Studies | Year: 2014

Sensory profiles of 13 coffee samples from the Huila Region, Colombia were evaluated using two different sensory panels: a highly trained descriptive sensory panel and a group of Q-certified coffee cuppers. The trained panel consisted of six descriptive panelists who developed a lexicon to evaluate and then test the coffee samples. Four "cuppers" scored the same samples based on the Specialty Coffee Association of America "cupping protocol." In addition, cuppers generated tasting notes to characterize the different coffee samples. Data indicated little overlap between the two methods and a low relationship between the two different sets of terms. Moreover, tasting notes by cuppers indicate lack of agreement on the terms used to describe samples, with only four terms used by more than two assessors to describe a single coffee product out of a total of 59 terms used by the cuppers. The results indicate that the cupping method and sensory descriptive methods provide different information that cannot be used as an alternative to each other when describing coffee products. Instead, the results suggest that the two types of data may be used synergistically to evaluate the quality and the sensory properties to better characterize coffee samples. Practical Applications: This research shows that "expert" coffee cupper data and trained sensory panel data cannot be used interchangeably. Thus, for research purposes sensory panel information is necessary for tracking changes in sensory properties. © 2014 Wiley Periodicals, Inc. Source

Myriam Rocio Pallares M.,South Colombian University
ARPN Journal of Engineering and Applied Sciences | Year: 2014

When we need to determine the solution of a nonlinear equation, there are two options for doing: (a) "closedmethods" which use intervals that contain the root and during the iterative process reduce the size of "smart" way, and, (b) "open-methods" which represent an attractive option as they don't require an initial interval enclosure. In general, we know open-methods are more efficient computationally though don't always work suitably. In this paper we are presenting the study of a very particular divergence case when we use open-methods, in fact, we use the method of fixed point iteration to look for square roots. To solve this problem, we propose to apply some tricks (developed by authors) to modify the iteration function. We propose two alternatives doing additional formulations of the traditional method and its convergence theorem. Although the situation has been studied with other methods like Newton an interesting divergence situation is presented in the method of fixed point iteration which probably could be solved by using another method, however the goal here is to demonstrate that this situation can be solved and additionally is possible to get a convergence higher than quadratic convergence in the first iterations when we use the proposed alternatives. © 2006-2014 Asian Research Publishing Network (ARPN). Source

Kovacs F.M.,Fundacion Kovacs | Urrutia G.,Biomedical Research Institute Sant Pau | Urrutia G.,CIBER ISCIII | Urrutia G.,Autonomous University of Barcelona | Alarcon J.D.,South Colombian University
Spine | Year: 2011

STUDY DESIGN.: Systematic review. OBJECTIVE.: To compare the effectiveness of surgery versus conservative treatment on pain, disability, and loss of quality of life caused by symptomatic lumbar spinal stenosis (LSS). SUMMARY OF BACKGROUND DATA.: LSS is the most common reason for spine surgery in persons older than 65 years in the United States. METHODS.: Randomized controlled trials (RCTs) comparing any form of conservative and surgical treatment were searched in CENTRAL, MEDLINE, EMBASE, and TripDatabase databases until July 2009, with no language restrictions. Additional data were requested from the authors of the original studies. The methodological quality of each study was assessed independently by two reviewers, following the criteria recommended by the Cochrane Back Review Group. Only data from randomized cohorts were extracted. RESULTS.: A total of 739 citations were reviewed. Eleven publications corresponding to five RCTs were included. All five scored as high quality despite concerns deriving from heterogeneity of treatment, lack of blinding, and potential differences in the size of the placebo effect across groups. They included a total of 918 patients in whom conservative treatments had failed for 3 to 6 months, and included orthosis, rehabilitation, physical therapy, exercise, heat and cold, transcutaneous electrical nerve stimulation, ultrasounds, analgesics, nonsteroidal anti-inflammatory drugs, and epidural steroids. Surgical treatments included the implantation of a specific type of interspinous device and decompressive surgery (with and without fusion, instrumented or not). In all the studies, surgery showed better results for pain, disability, and quality of life, although not for walking ability. Results of surgery were similar among patients with and without spondylolisthesis, and slightly better among those with neurogenic claudication than among those without it. The advantage of surgery was noticeable at 3 to 6 months and remained for up to 2 to 4 years, although at the end of that period differences tended to be smaller. CONCLUSION.: In patients with symptomatic LSS, the implantation of a specific type of device or decompressive surgery, with or without fusion, is more effective than continued conservative treatment when the latter has failed for 3 to 6 months. © 2011, Lippincott Williams &Wilkins. Source

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