Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Marco Cárdenas"'
Autor:
Rafael Aguilar-González, Marco Cárdenas-Juárez, Juan Carlos Rodríguez-Ortiz, Mauricio Jesús Romero-Méndez
Publikováno v:
Terra Latinoamericana, Vol 41, Iss 0, Pp 1-11 (2023)
Las tendencias tecnológicas están presentes en distintas áreas, en el caso de la agricultura es posible encontrar aplicaciones tales como los invernaderos automatizados. Sin embargo, para gran parte de los pequeños productores de países con cond
Externí odkaz:
https://doaj.org/article/77419863c1d54db09c3d7c2e5b3fa5de
Autor:
Victor A. Novelo-Hernández, Marco Cárdenas, Claudia Torres-González, Patricio Garcia-Espinosa, Rómulo Ramirez, Marco Díaz-Torres, Alejandro Marfil-Rivera
Publikováno v:
International Journal of Medical Students, Vol 9, Iss 3 (2021)
Background: Myelitis post Herpes-Zoster is a rare condition that is typically associated with immunocompromised states. It usually starts as an acute loss of sensory and motor functions below the affected spinal cord level. The condition can range in
Externí odkaz:
https://doaj.org/article/fee40f77c1fa419f8d8b7f621b4c27d8
Autor:
Marco Cárdenas, Claudia Torres-González, Marco Díaz-Torres, Rómulo Ramirez, Alejandro Marfil-Rivera, Victor A Novelo-Hernández, Patricio Garcia-Espinosa
Publikováno v:
International Journal of Medical Students.
Background: Myelitis post Herpes-Zoster is a rare condition that is typically associated with immunocompromised states. It usually starts as an acute loss of sensory and motor functions below the affected spinal cord level. The condition can range in
Autor:
Jorge Simon, Emmanuel Hernandez-Gonzalez, Juvenal Villanueva-Maldonado, Gustavo Vera-Reveles, Pablo-Armando Alcaraz-Valencia, Victor H. Castillo-Topete, Leonel Soriano-Equigua, Fermin Marcelo Maciel-Barboza, Jorge Flores-Troncoso, Jose Ricardo Gomez-Rodriguez, Marco Cardenas-Juarez, Jose Alvarez-Flores
Publikováno v:
International Journal of Antennas and Propagation, Vol 2024 (2024)
In this article, a comparison of the absorption properties of 7 common agricultural waste materials from the state of Colima in Mexico is performed. The study carried out at X-band frequencies finds that the highest absorption levels were mainly from
Externí odkaz:
https://doaj.org/article/96a9612c701240a9b2f51e6d19cf19d5
Autor:
Carlos A. Gomez-Vega, Jorge Cardenas, Juan C. Ornelas-Lizcano, Carlos A. Gutierrez, Marco Cardenas-Juarez, Jose M. Luna-Rivera, Ruth M. Aguilar-Ponce
Publikováno v:
IEEE Access, Vol 10, Pp 27162-27184 (2022)
This paper describes the implementation of a Doppler spectrum measurement platform for narrowband frequency-dispersive vehicle-to-vehicle (V2V) channels. The platform is based on a continuous-wave (CW) channel sounding approach widely used for path-l
Externí odkaz:
https://doaj.org/article/197ef50dfd334b50b6eb5bab047b9250
Autor:
Jorge Simon, Hugo Perez-Guerrero, Jorge Sosa-Pedroza, Fabiola Martínez-Zúñiga, Juvenal Villanueva-Maldonado, Jorge Flores-Troncoso, Marco Cardenas-Juarez
Publikováno v:
International Journal of Antennas and Propagation, Vol 2021 (2021)
As in any satellite, onboard antennas for CubeSats are crucial to establish communication with ground stations or other satellites. According to its application, antennas must comply with standardized requirements related to size, bandwidth, operatin
Externí odkaz:
https://doaj.org/article/753505ba88f74771bb3cc03db73e5dc8
Autor:
Jorge Simon, Jorge Flores-Troncoso, Jose Luis Alvarez-Flores, Leonel Soriano-Equigua, Marco Cardenas-Juarez, Armando Arce, Edgar Briones, Jorge Sosa-Pedroza
Publikováno v:
International Journal of Antennas and Propagation, Vol 2020 (2020)
This article presents the design, fabrication, and measurement of a square Koch fractal slot antenna for UHF band using both the FR4-G10 and Cuclad 250 substrates. Conveniently, this 56.56 cm full-length antenna possesses a geometry that allows it to
Externí odkaz:
https://doaj.org/article/99c3022afcbc419aa2412882f8b2f7fb
Autor:
Jorge Simón, J. Villanueva-Maldonado, Francisco R. Castillo-Soria, Marco Cardenas-Juarez, Edgar Briones, Remberto Sandoval-Arechiga, Leonel Soriano-Equigua, José L. Alvarez-Flores
Publikováno v:
International Journal of Antennas and Propagation, Vol 2019 (2019)
In this work, a comparison of the microwave absorption properties of Opuntia ficus-indica cladodes, Agave atrovirens branches, and Cocos nucifera L. husk samples was performed. The study was carried out by inserting dry and powdered samples of these
Externí odkaz:
https://doaj.org/article/21cc43821512409c843690a4eedd3ab1
Autor:
Armando Arce, Enrique Stevens-Navarro, Marco Cardenas-Juarez, Ulises Pineda-Rico, Jorge Simon, Marco A. Panduro
Publikováno v:
International Journal of Antennas and Propagation, Vol 2019 (2019)
In this work, a flexible and reconfigurable feeding network design for a nonuniform aperture on circular concentric ring arrays is proposed and analyzed. The network subsystem delivers coherent in-phase outputs with a Gaussian-like amplitude distribu
Externí odkaz:
https://doaj.org/article/d5a8595ccc604335900eed1a80d28209
Autor:
Armando Arce, Enrique Stevens-Navarro, Ulises Pineda-Rico, Marco Cardenas-Juarez, Francisco R. Castillo-Soria, David H. Covarrubias
Publikováno v:
Applied Sciences, Vol 11, Iss 3, p 1111 (2021)
A dual-beam coherent feeding system design approach with a non-uniform layout on a concentric ring array is described and synthesized. In this case, the feeding system is based on a reconfigurable topology composed of a set of alternated power divide
Externí odkaz:
https://doaj.org/article/c3f1f73decc240a8a6c7914d61849eda