Results 41 to 50 of about 960,973 (167)

24 million years of pollination interaction between European linden flowers and bumble bees

open access: yesNew Phytologist, Volume 248, Issue 4, Page 2111-2127, November 2025.
Summary Pollination is the most common insect–plant mutualism, binding them in a co‐evolutionary framework. Historic evidence of this interaction can be partly inferred from time‐calibrated molecular phylogenies of plant and insect lineages or directly from fossils.
Christian Geier   +9 more
wiley   +1 more source

Effect of Temperature and Catalyst Concentration on Polyglycerol during Synthesis

open access: yesInternational 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   +3 more
wiley   +1 more source

Pavimento rígido como alternativa econômica para pavimentação rodoviária: estudo de caso - rodovia BR-262, Miranda - Morro do Azeite - MS [PDF]

open access: yes, 2001
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Civil.Este trabalho tem por objetivo a elaboração de uma análise econômica comparativa de custos, entre a alternativa de ...
Mesquita, José Carlos Lobato
core  

Diseño de pavimento flexible de la avenida San Juan Bosco, Sullana, Piura 2022 [PDF]

open access: yes, 2022
El presente trabajo de investigación se concentra en el análisis del pavimento flexible aplicado como alternativa de solución para el mejoramiento de transitabilidad vehicular en la ciudad de Sullana, siendo una de las ciudades más afectada por la ...
Rueda Chumacero, Leyner Omar   +1 more
core  

Diseño, construcción y funcionamiento de un prototipo para medir cargas vehiculares en un pavimento flexible

open access: yesRevista Ingeniería de Construcción, 2014
El artículo presenta el diseño y la construcción de un prototipo con el cual es posible medir cargas vehiculares en un pavimento flexible, a partir de las vibraciones que dichos vehículos generan cuando se movilizan sobre esta estructura vial.
Hugo Rondón   +2 more
doaj   +1 more source

Apocynaceae wood evolution matches key morphological innovations

open access: yesAmerican 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   +4 more
wiley   +1 more source

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

open access: yesThe 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   +8 more
wiley   +1 more source

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

open access: yesNew 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   +7 more
wiley   +1 more source

Modelo de evaluación técnica del desempeño del mantenimiento de pavimentos flexibles [PDF]

open access: yesRevista de la construcción, 2010
En la gestion de pavimentos es importante evaluar el desempeno de las estrategias de mantenimiento. Esta se realiza mediante modelos tales como HDM-4 a nivel de red. Sin embargo, no siempre se cuenta con calibraciones a nivel de proyecto que permitan precisar los planes de mantenimiento.
Vera, I   +3 more
openaire   +2 more sources

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

open access: yesNew 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   +6 more
wiley   +1 more source

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