Results 11 to 20 of about 178,524 (213)
Dosis de radiación por radiografías y factores asociados en neonatos de la Unidad de Recién Nacidos del Hospital Universitario San Ignacio, Bogotá, Colombia [PDF]
Biomédica: revista del Instituto Nacional de Salud, 2023 Introducción. Las radiografías continúan usándose ampliamente, subestimando los riesgos. Esto sucede, especialmente, en las unidades de cuidado neonatal, lo que implica que los neonatos reciben una dosis de radiación ionizante mayor que los adultos ...
Diana Ramírez +4 more
doaj +2 more sources
On the Bivariate Nakagami-Lognormal Distribution and Its Correlation Properties
International Journal of Antennas and Propagation, 2014 The bivariate Nakagami-lognormal distribution used to model the composite fast fading and shadowing has been examined exhaustively. In particular, we have derived the joint probability density function, the cross-moments, and the correlation coefficient ...
Juan Reig +2 more
doaj +2 more sources
Fading Evaluation in the 60 GHz Band in Line-of-Sight Conditions
International Journal of Antennas and Propagation, 2014 An exhaustive analysis of the small-scale fading amplitude in the 60 GHz band is addressed for line-of-sight conditions (LOS). From a measurement campaign carried out in a laboratory, we have estimated the distribution of the small-scale fading amplitude
J. Reig +4 more
doaj +2 more sources
Atmosphere, 2023 Samples of airborne particles with aerodynamic diameters smaller than 10 µm (PM10) were collected in 2021 at two households in the Metropolitan Area of Mexico City. Both sites are in areas with different characteristics (residential or industrial zones).
Salvador Reynoso-Cruces +2 more
doaj +1 more source
Interplay of diet and sympatry in the morphological evolution of noctilionoid bats
Journal of Biogeography, Volume 50, Issue 12, Page 2084-2094, December 2023., 2023 Abstract Aim The remarkable ecomorphological diversity of the bat superfamily Noctilionoidea is the result of a diet‐mediated adaptive radiation. Stemming from a putatively insectivorous ancestor, noctilionoid bats diversified to adapt to the widest range of dietary ecologies among mammals.
Camilo López‐Aguirre +2 more
wiley +1 more source
A comparison of methods for excluding light from stems to evaluate stem photosynthesis
Applications in Plant Sciences, Volume 11, Issue 6, November-December 2023., 2023 Abstract Premise A comparison of methods using different materials to exclude light from stems to prevent stem CO2 exchange (i.e., photosynthesis), without affecting stem conductance to water vapor, surface temperature, and relative humidity, was conducted on stems of avocado trees in California.
Nadia A. Valverdi +4 more
wiley +1 more source
Journal of Biogeography, Volume 50, Issue 10, Page 1763-1777, October 2023., 2023 Abstract Aim Evolutionary studies of oceanic island endemics are usually focused on lineages that have experienced in situ radiation, while those that speciated once on the island or archipelago but have not further diversified (single‐species endemics) remain understudied.
Angélica Gallego‐Narbón +3 more
wiley +1 more source
IET Generation, Transmission &Distribution, Volume 17, Issue 16, Page 3739-3750, August 2023., 2023 This paper presents a novel method to locate and size photovoltaic (PV) power plants in distribution networks. The method uses two objective functions and one of them uses a fixed voltage profile that allows reducing the execution times of the algorithm. This method turned out to be efficient when compared with other optimization algorithms.
Carlos Abel Perdomo Pérez +2 more
wiley +1 more source
Journal of Traumatic Stress, Volume 36, Issue 1, Page 129-143, February 2023., 2023 Abstract During the Great East Japan Earthquake, many people experienced the loss of family and friends, among other traumatic events. This study sought to clarify the impact of the loss of significant close others on posttraumatic stress symptoms (PTSS), as well as the factors associated with PTSS, among individuals who experienced the loss of ...
Mayumi Harigane +9 more
wiley +1 more source
Molecular Ecology Resources, Volume 22, Issue 3, Page 927-945, April 2022., 2022 Abstract Target capture has emerged as an important tool for phylogenetics and population genetics in nonmodel taxa. Whereas developing taxon‐specific capture probes requires sustained efforts, available universal kits may have a lower power to reconstruct relationships at shallow phylogenetic scales and within rapidly radiating clades. We present here
Gil Yardeni +13 more
wiley +1 more source