Zobrazeno 1 - 10
of 129
pro vyhledávání: '"Esteban Valencia"'
Publikováno v:
Drones, Vol 7, Iss 12, p 686 (2023)
The implementation of distributed propulsion and boundary layer ingestion for unmanned aerial vehicles represents various challenges for the design of embedded ducts in blended wing body configurations. This work explores the conceptual design and ev
Externí odkaz:
https://doaj.org/article/69ea32fc5d9440f0b81a1f0506ccbff3
Publikováno v:
Tetrahedron Chem, Vol 2, Iss , Pp 100018- (2022)
In this work we describe the preparation of two tetracationic molecular tweezers that were used as hosts for the recognition of chloride, bromide and iodide. These two hosts contain a rigid bis-alkynyl spacer that connects two arms built with two pin
Externí odkaz:
https://doaj.org/article/106353703b81413dbb3c27b1e1051d2c
Autor:
Esteban Valencia, Iván Changoluisa, Kevin Palma, Patricio Cruz, Deyanira Valencia, Paul Ayala, Victor Hidalgo, Diego Quisi, Nelson Jara, Diana Puga
Publikováno v:
Heliyon, Vol 8, Iss 3, Pp e09054- (2022)
Remote sensing using satellites and unmanned aerial vehicles (UAVs) has become an important tool for wetland delimitation and saturation assessment since they enable patterns identification and wetland saturation data collection in an agile and optim
Externí odkaz:
https://doaj.org/article/78fbff16e6b241afb3db55b413ec86b7
Publikováno v:
Aerospace, Vol 9, Iss 2, p 63 (2022)
Current environmental policies for the aviation sector motivate the use of cleaner propulsion alternatives in order to reduce their CO2 footprint and noise pollution in the coming years. In this context, hybrid propulsion systems have emerged as a po
Externí odkaz:
https://doaj.org/article/f5f93a527f1b4e739b1d9fec8232a5e2
Autor:
Cristian Cruzatty, Darwin Jimenez, Esteban Valencia, Ivan Zambrano, Christian Mora, Xianwu Luo, Edgar Cando
Publikováno v:
Energies, Vol 15, Iss 1, p 8 (2021)
The operation of various types of turbomachines is importantly affected by sediment erosion. Francis turbines used for power generation typically suffer said effects due to the fact that they are used in sediment-laden rivers and are usually operated
Externí odkaz:
https://doaj.org/article/4660e84de81c42e280106e6891486620
Publikováno v:
Aerospace, Vol 8, Iss 7, p 171 (2021)
Despite the increasing demand of Unmanned Aerial Vehicles (UAVs) for a wide range of civil applications, there are few methodologies for their initial sizing. Nowadays, classical methods, mainly developed for transport aircraft, have been adapted to
Externí odkaz:
https://doaj.org/article/37a2704e5ed94265a122f4fbd86ba225
Autor:
Sarah C Walker, Mylien Duong, Christopher Hayes, Lucy Berliner, Leslie D Leve, David C Atkins, Jerald R Herting, Asia S Bishop, Esteban Valencia
Publikováno v:
PLoS ONE, Vol 14, Iss 11, p e0224363 (2019)
This pilot quasi-experimental trial tested a gender-responsive cognitive behavioral group intervention with 87 court-involved female adolescents (5 juvenile courts) who were at indicated risk for substance use disorder. Participants in the interventi
Externí odkaz:
https://doaj.org/article/6425ef5e00f54e8399843a730ad2671a
Autor:
Víctor Hidalgo, Xavier Escaler, Esteban Valencia, Xiaoxing Peng, José Erazo, Diana Puga, Xianwu Luo
Publikováno v:
Applied Sciences, Vol 9, Iss 18, p 3696 (2019)
The present paper focuses on the numerical simulation of unsteady cavitation around a NACA66 hydrofoil to improve the understanding of the cavitation effects on hydraulic machinery. For this aim, the Zwart−Gerber−Belamri cavitation model was upda
Externí odkaz:
https://doaj.org/article/dd2fae2fbf38429d999359cf7bdcfa8f
Autor:
Esteban Valencia, Panagiotis Laskaridis, Riti Singh, Chengyuan Liu, Edgar Cando, Victor Hidalgo
Publikováno v:
Revista Politécnica, Vol 35, Iss 3, Pp 1-1 (2015)
Resumen: Los beneficios potenciales que representa la aviación en los campos: económico, de seguridad y de desarrollotecnológico de un país, han motivado a países como Ecuador a fomentar el crecimento de la aeronáutica en los últimosaños. Lam
Externí odkaz:
https://doaj.org/article/6a694e06c42c4d05b9046cc3752aec7a
Autor:
Esteban Valencia, Victoria Granja, Jose Palacios, Ricardo Poveda, Edgar Cando, Victor Hidalgo
Publikováno v:
Revista Politécnica, Vol 35, Iss 3, Pp 19-19 (2015)
Resumen: El presente trabajo establece el procedimiento experimental llevado a cabo para obtener las curvas características de un compresor, y busca describir el método de propagación de incertidumbres en los resultados finales de un banco de prue
Externí odkaz:
https://doaj.org/article/bedb67c823f3485c9b9371f5328540d9