Results 51 to 60 of about 1,750,271 (184)

Effect of Temperature and Catalyst Concentration on Polyglycerol during Synthesis

International Journal of Polymer Science, Volume 2015, Issue 1, 2015., 2015
Morphology, molecular weight, polydispersity, functionality, and thermal properties are important characteristics when using polyglycerol as a building block in the development of materials for industrial applications such as hydrogels, surfactants, asphalts additives, cosmetics, pharmaceutical, biomedical, and drug delivery systems.
Carolina Ardila-Suárez, Diana Rojas-Avellaneda, Gustavo E. Ramirez-Caballero, Yu Wang   +3 more
wiley   +1 more source

Evaluación del estado de la mezcla asfáltica en servicio de un pavimento rehabilitado que presentó afectaciones de tipo deformación [PDF]

, 2014
Trabajo de investigaciónEl presente trabajo de grado se refiere a la evaluación del estado de la mezcla asfáltica de un sector de pavimento flexible de 7.16 Km de longitud, que con menos de un año de rehabilitado mediante colocación de sobrecarpeta de ...
López-Farfán, Nancy Johanna
core  

Apocynaceae wood evolution matches key morphological innovations

American Journal of Botany, Volume 111, Issue 11, November 2024.
Abstract Premise This paper provides an overview of the wood anatomy of the dogbane family (Apocynaceae), reconstructs wood anatomical trait evolution, and links this evolution with woody growth‐form transitions and floral and seed trait innovations across the family.
Vicky Beckers, Mary Endress, Pieter Baas, Erik Smets, Frederic Lens   +4 more
wiley   +1 more source

An Iterative Approach for the Optimization of Pavement Maintenance Management at the Network Level

The Scientific World Journal, Volume 2014, Issue 1, 2014., 2014
Pavement maintenance is one of the major issues of public agencies. Insufficient investment or inefficient maintenance strategies lead to high economic expenses in the long term. Under budgetary restrictions, the optimal allocation of resources becomes a crucial aspect.
Cristina Torres-Machí, Alondra Chamorro, Carlos Videla, Eugenio Pellicer, Víctor Yepes, R. Beale, S. B. Coskun, S. S. Seyedalizadeh, Z. Tao   +8 more
wiley   +1 more source

Diseño de la estructura de pavimento flexible por medio de los métodos INVIAS, AASHTO 93 e Instituto del Asfalto para la vía La Ye - Santa Lucía Barranca Lebrija entre los abscisas K19+250 A K25+750 ubicada en el departamento del Cesar [PDF]

, 2014
Trabajo de investigaciónHoy en día el país se encuentra en una etapa de desarrollo muy importante teniendo en cuenta los tratados de libre comercio TLC firmados con varios países y el proceso de paz que se adelanta en la habana, cuba.
Salamanca-Niño, María Angélica, Zuluaga-Bautista, Santiago Arturo   +1 more
core  

Chloroplast NADH dehydrogenase‐like complex‐mediated cyclic electron flow is the main electron transport route in C4 bundle sheath cells

New Phytologist, Volume 243, Issue 6, Page 2187-2200, September 2024.
Summary The superior productivity of C4 plants is achieved via a metabolic C4 cycle which acts as a CO2 pump across mesophyll and bundle sheath (BS) cells and requires an additional input of energy in the form of ATP. The importance of chloroplast NADH dehydrogenase‐like complex (NDH) operating cyclic electron flow (CEF) around Photosystem I (PSI) for ...
Maria Ermakova, Russell Woodford, Duncan Fitzpatrick, Samuel J. Nix, Soraya M. Zwahlen, Graham D. Farquhar, Susanne von Caemmerer, Robert T. Furbank   +7 more
wiley   +1 more source

Decoupling cell size homeostasis in diatoms from the geometrical constraints of the silica cell wall

New Phytologist, Volume 243, Issue 1, Page 258-270, July 2024.
Summary Unicellular organisms are known to exert tight control over their cell size. In the case of diatoms, abundant eukaryotic microalgae, two opposing notions are widely accepted. On the one hand, the rigid silica cell wall that forms inside the parental cell is thought to enforce geometrical reduction of the cell size.
Diede de Haan, Nahuel‐Hernán Ramos, Yu‐Feng Meng, Ron Rotkopf, Yoseph Addadi, Irit Rosenhek‐Goldian, Assaf Gal   +6 more
wiley   +1 more source

Example of flexible pavement design methodology under 93 AASTHO [PDF]

, 2015
El artículo presenta un ejemplo práctico para el análisis y diseño de estructuras en pavimento flexible efectuado bajo la metodología AASTHO 93, incluye la revisión de la estructura diseñada utilizando las leyes de fatiga de la casa SHELL, acompañado con
Cabrales Contreras, Dagoberto
core  

How and why do species break a developmental trade‐off? Elucidating the association of trichomes and stomata across species

American Journal of Botany, Volume 111, Issue 5, May 2024.
Abstract Premise Previous studies have suggested a trade‐off between trichome density (Dt) and stomatal density (Ds) due to shared cell precursors. We clarified how, when, and why this developmental trade‐off may be overcome across species. Methods We derived equations to determine the developmental basis for Dt and Ds in trichome and stomatal indices (
Alec S. Baird, Camila D. Medeiros, Marissa A. Caringella, Julia Bowers, Michelle Hii, John Liang, Joshua Matsuda, Kirthana Pisipati, Caroline Pohl, Benjamin Simon, Silvard Tagaryan, Thomas N. Buckley, Lawren Sack   +12 more
wiley   +1 more source

Comportamiento de una pista experimental de pavimento flexible con base estabilizada con cal [PDF]

, 2010
En este trabajo se presentan resultados de una investigación realizada para determinar las propiedades de deformabilidad de bases estabilizadas con cal a partir de ensayos de campo no destructivos.
Hidalgo Montoya, César Augusto, Pandales, Carlos Arturo, Pedroza Valdés, Boris Andrés, Rodríguez Moreno, Mario Alberto   +3 more
core   +2 more sources