Results 51 to 60 of about 24,529 (208)

Chirp-wave Expansion of the Electron Wavefunctions in Atoms [PDF]

open access: yes, 2013
The description of the electron wavefunctions in atoms is generalized to the fractional Fourier series. This method introduces a continuous and infinite number of chirp basis sets with linear variation of the frequency to expand the wavefunctions, in ...
Torres, Edmanuel, Torres, Rafael
core   +2 more sources

Control System for the Navigation of the Agricultural Robots: A Review

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT Control systems for the navigation of autonomous agricultural robots—particularly those operating in uneven terrain and in the presence of static or dynamic obstacles—have advanced considerably in recent years. As conventional machinery evolves toward increasingly automated systems, the design of reliable navigation controllers has become ...
Edna Carolina Moriones Polanía   +3 more
wiley   +1 more source

Concepciones del embarazo en adolescentes gestantes de la ciudad de Bucaramanga

open access: yesRevista Cuidarte, 2017
Introducción: El embarazo adolescente es una problemática que tiene consecuencias en la vida de las adolescentes y sus familias. Conocer las concepciones y representaciones que tienen las adolescentes gestantes es una herramienta fundamental para ...
Beatriz Andrea del Pilar Niño   +4 more
doaj   +1 more source

Gestión de riesgos en proyectos predictivos con variables dicotómicas: Caso proyecto de consultoría

open access: yesRevista Boletín Redipe, 2023
El artículo presenta la aplicación de las variables dicotómicas como herramienta para la gestión de riesgos en proyectos de tipo predictivo, además propone el uso de la Curva S Integrada, como representación gráfica que incluye las variables costo ...
Juan Sebastián Dugarte Mendoza   +10 more
doaj   +1 more source

El lento despegue industrial de Bucaramanga, Colombia (1857-1929)

open access: yesApuntes del Cenes, 2020
Este artículo analiza las condiciones que hicieron posible un incipiente proceso de industrialización en Bucaramanga, Colombia, durante siete décadas, cinco correspondientes al siglo XIX y dos al siglo XX. El origen y monto de los capitales, las profesiones y ocupaciones de los actores económicos, el nivel de riesgo empleado, el sentido de asociación ...
Álvaro Acevedo Tarazona   +1 more
openaire   +5 more sources

Outcomes in Patients Requiring VENO‐Venous Extracorporeal Membrane Oxygenation After Cardiac Surgery: An Analysis From the PELS‐1 Study

open access: yesArtificial Organs, EarlyView.
We report an insight from the PELS‐1– a multicentre, international registry focusing on postocardiotomy extracorporeal support use between 2000 and 2020. We focused on 24/2163 (1.1%) patients requiring V‐V ECMO after cardiac surgery. Mortality was high, with 21.7% of patients discharged alive and an overall 1‐year survival probability of 12.5 ...
Pasquale Nardelli   +39 more
wiley   +1 more source

Wernicke-Korsakoff syndrome secondary to cytomegalovirus encephalitis: A case report

open access: yesBiomédica: revista del Instituto Nacional de Salud, 2017
Cytomegalovirus (CMV) is one of the opportunistic microorganisms with the highest prevalence in immunocompromised patients. Reactivation has decreased after the introduction of highly active antiretroviral therapy (HAART).
Luis Guillermo Uribe   +4 more
doaj   +1 more source

Astroparticle Physics at Eastern Colombia

open access: yes, 2015
We present the emerging panorama of Astroparticle Physics at Eastern Colombia, and describe several ongoing projects, most of them related to the Latin American Giant Observatory (LAGO) Project.
Asorey, Hernan, Nunez, Luis A.
core   +1 more source

Kinetics of lycopene degradation in sunflower and grape seed oils [PDF]

open access: yes, 2018
The stability of lycopene in two vegetable oils, sunflower seed oil (SSO) and grape seed oil (GSO), was investigated by analyzing the carotenoid degradation kinetics in the temperature range of 10–40°C.
González, Erenio   +3 more
core   +1 more source

Design of a residential microgrid in Lagos del Cacique, Bucaramanga, Colombia [PDF]

open access: yesJournal of Physics: Conference Series, 2017
In this paper is presented a model that analyses the options to provide energy to an interconnected house in Lagos del Cacique, Bucaramanga, Colombia. Three power supplies were considered: photovoltaic, 1 kW wind turbine, and a 2.6kW gasoline generator, as well as a battery for energy storage.
Bellon Monsalve, Daniela   +2 more
openaire   +2 more sources

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