Results 51 to 60 of about 460,452 (198)

Historical biogeographic analysis of the family Fanniidae (Díptera: Calyptratae), with special reference to the austral species of the genus Fannia (Diptera: Fanniidae) using dispersal-vicariance analysis Análisis biogeográfico histórico de la familia Fanniidae (Diptera: Calyptratae), con referencia especial a las especies australes del genero Fannia (Diptera: Fanniidae) usando análisis de dipersion-vicarianza

open access: yesRevista Chilena de Historia Natural, 2011
The purpose of this study was to achieve a hypothesis explaining the biogeographical history of the family Fanniidae, especially that of the species from Patagonia, the Neotropics, Australia, and New Zealand. We used "dispersal-vicariance analysis" (DIVA)
M. CECILIA DOMÍNGUEZ   +1 more
doaj  

Identificación de tipos funcionales de plantas en el bosque andino del Parque Universitario Francisco Vivar Castro

open access: yesBosques Latitud Cero, 2022
La identificación de tipos funcionales de plantas basados en rasgos funcionales, permite entender de mejor manera la respuesta que presenta la vegetación a diversos factores ambientales que se dan dentro de una zona o ecosistema a través del estudio de ...
Johana Muñoz   +3 more
doaj  

Trajectories of Physical Function in Canadian Children With Juvenile Idiopathic Arthritis

open access: yesArthritis Care &Research, EarlyView.
Objective We describe trajectories of physical function in children newly diagnosed with juvenile idiopathic arthritis (JIA) and identify trajectories with persisting functional impairments and associated baseline characteristics. Methods We included patients enrolled in the Canadian Alliance of Pediatric Rheumatology Investigators (CAPRI) Registry ...
Clare Cunningham   +81 more
wiley   +1 more source

EL ANÁLISIS DE CORRELACIÓN EN EL ESTUDIO GEOGRÁFICO DEL COMERCIO. PROYECCIÓN EN EL SURESTE DE LA REGIÓN DE MURCIA

open access: yesPapeles de Geografí­a, 1991
La relación entre fenómenos es esencial en la tarea del geógrafo. Se proponen dos métodos de relación; el primero, ((coeficiente de Pearsonn, expresa en un valor global la fuerza y dirección de relación entre dos variables; el segundo, ((gráficos de ...
Miguel A. Martin Hernando
doaj  

The Development of Rheumatoid Arthritis‐Specific Ambulatory Care Sensitive Conditions: Results of a Consensus Process

open access: yesArthritis Care &Research, Accepted Article.
Objective Ambulatory care sensitive conditions (ACSCs) serve as indicators of access, quality, and performance of the health system. This study aimed to determine rheumatoid arthritis (RA)‐specific ACSCs for use in the evaluation of care system access and quality.
Kara Irwin   +7 more
wiley   +1 more source

Adaptive Observer for Coupled Wave PDE and Infinite ODE With Sampled Data and Unknown Input: Application to Brain Hemodynamics Estimation

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This article proposes a convergent adaptive observer for a damped wave PDE and an infinite‐dimensional ODE coupled in cascade using sampled‐in‐space ODE state measurements. The proposed observer estimates the distributed states of the PDE and ODE along with unknown PDE parameters and spatial input.
Zehor Belkhatir   +2 more
wiley   +1 more source

Biología reproductiva de Eschweilera bogotensis (Lecythidaceae), en la Cordillera Occidental de Colombia

open access: yesCaldasia, 1997
The reproductiva biology of Eschweilera bogotensis (Lecythidaceae) was studied in a premontane forest at Los Farallones de Cali National Park (1650 m) from november 1993 to march 1994.
Gamboa Gaitán Miguel Ángel
doaj  

Estimación y modelación de emisiones de calderas de una comercializadora de combustibles

open access: yesTecnociencia Chihuahua
En el proceso de comercialización de combustibles, una de las fuentes de emisión de contaminantes  (continuas y discontinuas) proviene de la combustión derivada de la generación de electricidad y calor, venteo y quema de hidrocarburos y emisiones ...
Lester Rivas Trasancos   +3 more
doaj   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Unusual, equivocal Rayleigh-dispersion curves for simple models taking into account the special propagation conditions in the valley of Mexico City (CDMX) – Preliminary results

open access: yesGeofísica Internacional, 2017
Contrario a lo que normalmente es asumido en sismologia, la fase-velocidad de olas Rayleigh no necesariamente es una función de valor único de frecuencia.
Peter G. Malischewsky   +2 more
doaj   +1 more source

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