Results 31 to 40 of about 8,355,382 (176)
Chemistry – A European Journal, EarlyView.A new silver‐catalyzed H/D exchange reaction was developed for the labelling of quinones and related compounds. Both homogeneous and heterogeneous catalytic processes were implemented using heavy water as a simple deuterium source. The corresponding deuterated compounds were obtained with high isotopic enrichment through a practical method that opens ...
Joyce C. de Oliveira +7 more
wiley +1 more source
ARQUISUR Revista, 2015 Entre los años 1946 y 1955, durante la presidencia del general Juan Domingo Perón, el gobierno argentino llevó adelante un plan de obras públicas que contempló la construcción de una importante red vial, además de escuelas, hospitales, centros deportivos,
Arq. Miguel Ángel Riera
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International Journal of Osteoarchaeology, EarlyView.ABSTRACT Understanding hunting strategies in Upper Paleolithic contexts remains challenging due to the complex relationships between prey behavior, environmental conditions, and human decision‐making. Addressing these dynamics requires integrating archeozoological, geospatial, and geochemical proxies capable of capturing demographic patterns, landscape
Alejandro Sierra +6 more
wiley +1 more source
Modelos de frecuencia de choques para segmentos e intersecciones: Ruta 34 en Costa Rica
Ingeniería, 2017 La Ruta Nacional 34 tiene una gran relevancia tanto a nivel nacional como internacional pues permite atravesar Costa Rica de frontera a frontera, sin ingresar a la zona metropolitana.
Viviana Varela Araya +1 more
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Migration of Erucamide in Polyethylene Film
Polymer Engineering &Science, EarlyView.Erucamide migration in polyethylene films as a function of time and temperature, evaluated by FTIR‐PAS and correlated with changes in surface morphology and contact angle. ABSTRACT Erucamide is a migratory slip agent widely used in polyethylene (PE) films for flexible packaging applications, particularly those processed on high‐speed filling and ...
Kelly Cristina Maziero +7 more
wiley +1 more source
Revista Facultad de Ingeniería Universidad de Antioquia, 2013 La estimación del tránsito es uno de los aspectos más importantes en el análisis y diseño estructural de pavimentos y para su adecuada determinación se hace necesario disponer de valores de factor camión actualizados.
Luis F. Macea +2 more
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Volatile Compounds in Feathers of the Scarlet Macaw (Ara macao) Reflect Sex and Pair‐Bond Status
Integrative Zoology, EarlyView.Scarlet macaws exhibit sex‐ and pair‐related differences in plumage volatile composition, with males showing greater chemical richness. Partnered individuals differ in specific compound classes, whereas no clear association with immune function was detected. These results support a potential role for olfactory cues in sexual and social communication in
Elisa Espartosa +3 more
wiley +1 more source
Historia y Espacio, 2018 El artículo analiza los orígenes, la operatividad y los cambios del transporte de pasajeros en Boyacá. Para ello se incluyeron tres factores causales que permitieron explicar su funcionalidad y expansión en la región: primero, la configuración de la red ...
Yennifer Camargo Bonilla
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Cladistics, EarlyView.Abstract The marronoid clade is a globally distributed, ecologically diverse group of spiders. It is an important faunal component in both natural and synanthropic environments, and even found in aquatic and extreme habitats such as desert salt flats. The systematics of the marronoid clade has been notoriously unstable due to the widespread character ...
Jonas O. Wolff +10 more
wiley +1 more source
Autopistas y distribuidores de Venezuela
Informes de la Construccion, 1972 La creciente demanda del transporte urbano ha creado serios problemas de tránsito en las grandes ciudades. Para solucionarlo se hace preciso acometer importantes y variadas obras de ingeniería en todas ellas.
Equipo Editorial
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