Results 51 to 60 of about 482,471 (197)

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

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  

Limitaciones para el establecimiento de plántulas en arenales de origen volcánico

open access: yesBotan‪ical Sciences, 2010
La dispersión de semillas, la disponibilidad de micrositios y la herbivoría pueden afectar severamente el resultado de las actividades de restauración ecológica.
Irma Jannetth Nava-Sosa   +3 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth   +6 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  

Field Report from Collaborative Research Center 1625: Heterogeneous Research Data Management Using Ontology Representations

open access: yesAdvanced Engineering Materials, EarlyView.
A unified research data management framework for heterogeneous materials data is presented. The system integrates multimodal datasets using ontologies and knowledge graphs, enabling interoperability and FAIR (findable, accessible, interoperable, reusable) data principles. By linking data across scales and workflows, it supports reproducible, Artifitial
Doaa Mohamed   +6 more
wiley   +1 more source

Towards Defect Phase Diagrams: From Research Data Management to Automated Workflows

open access: yesAdvanced Engineering Materials, EarlyView.
A research data management infrastructure is presented for the systematic integration of heterogeneous experimental and simulation data required for defect phase diagrams. The approach combines openBIS with a companion application for large‐object storage, automated metadata extraction, provenance tracking and federated data access, thereby supporting ...
Khalil Rejiba   +5 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

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