Results 51 to 60 of about 137 (126)

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

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

Acción del agua y la temperatura ambiental extrema sobre pavimento flexible

open access: yesGnosisWisdom, 2021
Para el diseño de pavimentos flexibles se han incluido variables climáticas, pues se ha demostrado que es un factor que incide en el comportamiento estructural de las carreteras; siendo necesario incluir el efecto climático en el diseño de estructuras de pavimentos; en este sentido, el objetivo de esta investigación bibliográfica es mostrar que el ...
Alfredo Rojas Carrizales   +3 more
openaire   +2 more sources

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

open access: yesAmerican 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   +12 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

CuticleTrace: A toolkit for capturing cell outlines from leaf cuticle with implications for paleoecology and paleoclimatology

open access: yesApplications in Plant Sciences, Volume 12, Issue 1, January-February 2024.
Abstract Premise Leaf epidermal cell morphology is closely tied to the evolutionary history of plants and their growth environments and is therefore of interest to many plant biologists. However, cell measurement can be time consuming and restrictive with current methods.
Benjamin A. Lloyd   +6 more
wiley   +1 more source

Gestión sostenible del pavimento flexible, rígido y articulado del centro urbano del Cantón Girón

open access: yesMaskana, 2017
El índice de condición del pavimento, PCI para pavimentos flexible y rígido, e ICP para pavimento articulado, determina el nivel de servicio de una vía y las acciones operacionales que se pueden ejecutar en ésta, ya sea un tratamiento preventivo ...
Gonzalo Guzmán, Daniel Mogrovejo
doaj  

Desarrollo de curvas de deterioro para pavimento flexible y factor de incertidumbre

open access: yesInfraestructura Vial, 2017
Debido al problema de planificación que existe a nivel de Red Vial Cantonal en Costa Rica, gran cantidad de caminos cuentan con un nivel avanzado de deterioro y reciben actividades de mantenimiento que no son adecuadas, lo cual se traduce en un alto ...
Greivin Picado Muñoz
doaj   +1 more source

Comportamiento de una pista experimental de pavimento flexible con base estabilizada con cal

open access: yesRevista Ingenierías Universidad de Medellín, 2011
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.
César Augusto Hidalgo Montoya   +3 more
doaj  

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