Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Javier E. Gonzalez"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 10, Pp 1-10 (2024)
Abstract Testing possible variations in fundamental constants of nature is a crucial endeavor in observational cosmology. This paper investigates potential cosmological variations in the fine structure constant ( $$\alpha $$ α ) through a non-parame
Externí odkaz:
https://doaj.org/article/b01bed9d3f124b9ebc2919c81d651261
Autor:
Javier E. Gonzalez, Marcelo Ferreira, Leonardo R. Colaço, Rodrigo F.L. Holanda, Rafael C. Nunes
Publikováno v:
Physics Letters B, Vol 857, Iss , Pp 138982- (2024)
In this work, we obtain Hubble constant (H0) estimates by using two galaxy cluster gas mass fraction measurement samples, Type Ia supernovae luminosity distances, and the validity of the cosmic distance duality relation. Notably, the angular diameter
Externí odkaz:
https://doaj.org/article/a3d7b9f486ea4dac8aaf352429ba1846
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 10, Pp 1-4 (2020)
Abstract The measurement of present-day temperature of the Cosmic Microwave Background (CMB), $$T_0 = 2.72548 \pm 0.00057$$ T 0 = 2.72548 ± 0.00057 K (1 $$\sigma $$ σ ), made by the Far-InfraRed Absolute Spectrophotometer (FIRAS) as recalibrated by
Externí odkaz:
https://doaj.org/article/91620d6f12a64d89886a5d2297832c74
Autor:
Pawel Plonczak, Sean M. Kelly, Jiefeng Lin, John Peck, Jonathan Lane, Yunxiang Lu, Jamie R. Wilson, Mahesh Biradar, Javier E. Gonzalez, Chuck Robinson, Max Christie, Ines C. Stuckert, Zigui Lu, Juan Li, Sadashiv M. Swami, Joan Geary, Shrikar Chakravrti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::67651457d5adf7601254174741467f12
https://doi.org/10.2172/1243056
https://doi.org/10.2172/1243056
Autor:
Mariana Martinez-Moreno, Javier E. Gonzalez-Villarruel, Carlos A. Sanchez-Diaz, Blanca Tovar-Corona, Gustavo Perez-Lopez
Publikováno v:
CONIELECOMP
This paper presents a method to design UHF antennas for RFID applications. The paper proposes a step by step method that allow to select the adequate antenna topology according to the application and band, simulate and to design the lay out consideri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e89d70d2634ce42890a26a7233f78d4
https://doi.org/10.1109/conielecomp.2009.18
https://doi.org/10.1109/conielecomp.2009.18
Autor:
Javier E. González-Barajas, Cristian C. Velandia, Jeysson Lyma-Guaqueta, Pedro Ospina-Fuentes
Publikováno v:
TecnoLógicas, Vol 19, Iss 37, Pp 29-43 (2016)
The pulse oximetry signal (SPO2), allows the calculation of the oxygen saturation level in the blood, and it is acquired over the index finger of the patient. Under normal conditions, the variations in SPO2 have correlated with heart rhythm and its m
Externí odkaz:
https://doaj.org/article/98b7bdd71e1a4ad981ab63d5303c5b35
Publikováno v:
TecnoLógicas, Vol 18, Iss 35, Pp 75-86 (2015)
Quantification of the instantaneous heart rate is based on the detection of the R wave of the electrocardiographic signal. This process requires the implementation of strategies for real-time filtering for the time of occurrence of each R wave. Vario
Externí odkaz:
https://doaj.org/article/d48ceadd04bb4229941c48c9d26b391e
Autor:
Javier E. González-Barajas
Publikováno v:
TecnoLógicas, Vol 17, Iss 32, Pp 47-55 (2014)
The electrocardiographic signal is an electrical signal and its amplitude is 1 mV approximately and spectral components between 0.7 and 100 Hz. The electrocardiographic signal represents the electrical behavior of the human heart and it has a group o
Externí odkaz:
https://doaj.org/article/3a9fedaedc0747758c43905952ad55d3