scispace - formally typeset
Search or ask a question
Institution

Pontifical Bolivarian University

EducationMedellín, Colombia
About: Pontifical Bolivarian University is a education organization based out in Medellín, Colombia. It is known for research contribution in the topics: Population & Delirium. The organization has 4914 authors who have published 5018 publications receiving 32046 citations. The organization is also known as: Universidad Pontificia Bolivariana.


Papers
More filters
Journal ArticleDOI
22 Jun 2018-Science
TL;DR: It is demonstrated that, in the general population, the personality trait neuroticism is significantly correlated with almost every psychiatric disorder and migraine, and it is shown that both psychiatric and neurological disorders have robust correlations with cognitive and personality measures.
Abstract: Disorders of the brain can exhibit considerable epidemiological comorbidity and often share symptoms, provoking debate about their etiologic overlap. We quantified the genetic sharing of 25 brain disorders from genome-wide association studies of 265,218 patients and 784,643 control participants and assessed their relationship to 17 phenotypes from 1,191,588 individuals. Psychiatric disorders share common variant risk, whereas neurological disorders appear more distinct from one another and from the psychiatric disorders. We also identified significant sharing between disorders and a number of brain phenotypes, including cognitive measures. Further, we conducted simulations to explore how statistical power, diagnostic misclassification, and phenotypic heterogeneity affect genetic correlations. These results highlight the importance of common genetic variation as a risk factor for brain disorders and the value of heritability-based methods in understanding their etiology.

1,357 citations

Journal ArticleDOI
TL;DR: The transmission planning state-of-the-art, which was obtained from the review of the most interesting models found in the international technical literature, is presented.
Abstract: In this paper, the transmission planning state-of-the-art, which was obtained from the review of the most interesting models found in the international technical literature, is presented. The classification of publications was made, keeping in mind the solution methods, the treatment of the planning horizon, and the consideration of the new competitive schemes in the power sector. A discussion about the available tools for development of transmission planning models is also included.

713 citations

Journal ArticleDOI
TL;DR: The strong concordance of predicted and observed practice changes suggests that randomized trial results have advanced mechanical ventilation practices internationally.
Abstract: Rationale: Recent literature in mechanical ventilation includes strong evidence from randomized trials. Little information is available regarding the influence of these trials on usual clinical practice.Objectives: To describe current mechanical ventilation practices and to assess the influence of interval randomized trials when compared with findings from a 1998 cohort.Methods: A prospective international observational cohort study, with a nested comparative study performed in 349 intensive care units in 23 countries. We enrolled 4,968 consecutive patients receiving mechanical ventilation over a 1-month period. We recorded demographics and daily data related to mechanical ventilation for the duration of ventilation. We systematically reviewed the literature and developed 11 practice-change hypotheses for the comparative cohort study before seeing these results. In assessing practice changes, we only compared data from the 107 intensive care units (1,675 patients) that also participated in the 1998 cohort...

622 citations

Journal ArticleDOI
TL;DR: In this paper, a comprehensive review has been carried out in order to show the effects of the main process conditions (heating rate, temperature, pressure, carrier gas flow rate and type, volatiles residence time and pyrolysis time) on physicochemical properties and distributions of the resulting products (gas, liquid and solid fractions).
Abstract: This review deals with the state-of-the-art of waste tyre pyrolysis for the first time in literature. Pyrolysis has been addressed as an attractive thermochemical process to tackle the waste tyre disposal problem while allowing energy recovery. Pyrolysis enables the separation of carbon black from tyres and the volatile matter released (condensable and non-condensable compounds) has the potential of renewable energy recovery given the significant proportion of natural rubber present in the tyre. Given this waste-to-energy pathway, a comprehensive review has been carried out in order to show the effects of the main process conditions (heating rate, temperature, pressure, carrier gas flow rate and type, volatiles residence time and pyrolysis time) on the physicochemical properties and distributions of the resulting products (gas, liquid and solid fractions). It has also been reviewed the influence of the size and composition of the feedstock. All reported results have been framed regarding the type of reactor as well as the experimental conditions used to avoid contradictions among the large number of publications on the subject. It is shown that the occurrence of secondary reactions is very sensitive to the interaction of the aforementioned variables. Also, the main properties of the pyrolytic products are pointed out. The liquid and gaseous fractions obtained are a valuable fuel source; while the solid fraction (char) has the recovery potential of low- grade carbon black or as carbon adsorbent after applying an activation step. Special attention has been given to the liquid fraction, highlighting its properties as alternative fuel in compression ignition engines.

596 citations

Journal ArticleDOI
TL;DR: In this paper, the Laplace-Young equation for axisymmetric menisci is solved analytically in terms of elliptic integrals for all possible types of pendular rings and liquid bridges when the effect of gravity is negligible.
Abstract: The Laplace–Young equation is solved for axisymmetric menisci, analytically in terms of elliptic integrals for all possible types of pendular rings and liquid bridges when the effect of gravity is negligible, numerically for selected other cases in order to assess gravity's effect. Meniscus shapes, mean curvatures, areas and enclosed volumes are reported, as are capillary forces. It is shown that capillary attraction may become capillary repulsion when wetting is imperfect. The special configurations of vanishing capillary force and of zero mean curvature are treated. The range of utility of the convenient ‘circle approximation’ is evaluated.

554 citations


Authors

Showing all 4951 results

NameH-indexPapersCitations
Martin Heidegger7747450139
Orlando J. Rojas7151223344
Juan-Manuel Anaya7043817483
Carlos Jaramillo5431412814
Angela Restrepo5223514134
Paula T. Trzepacz481679419
Sandra Pérez441356254
Alexis Carrel391025304
Adriana Rojas-Villarraga371343892
Lauren M. McGrath33515932
Farid B. Cortés301573239
Piedad Gañán27932913
Farid Chejne251492568
Luz Elena Cano25802280
Yoav Keynan241442135
Network Information
Related Institutions (5)
University of Antioquia
23.9K papers, 267.4K citations

87% related

National University of Colombia
43.4K papers, 395.7K citations

86% related

University of Los Andes
25.5K papers, 413.4K citations

83% related

University of Guadalajara
17.3K papers, 168K citations

80% related

Instituto Politécnico Nacional
63.3K papers, 938.5K citations

79% related

Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20236
202248
2021312
2020397
2019424
2018419