Results 31 to 40 of about 14,825 (219)

Fern spore dispersal: A methodological review and experimental field study

open access: yesApplications in Plant Sciences, Volume 14, Issue 1, January-February 2026.
Abstract Spore dispersal is one of the most important but perhaps the least investigated and understood processes in determining the geographical distribution of fern species. After a methodological review of the aerobiology of fern spores, we examined the impact of spore characteristics and meteorological factors on their airborne dispersal.
Felipe Gómez‐Noguez   +6 more
wiley   +1 more source

El ferrocarril mantiene su protagonismo en la evolución urbana de Madrid: el Pasillo Verde y la operación Chamartín

open access: yesEstudios Geográficos, 2012
El ferrocarril ha constituido para Madrid un elemento clave en su desarrollo. Permitió romper con su aislamiento en el centro de un país sin vías navegables y con una red precaria de caminos.
María Pilar González Yanci
doaj   +1 more source

Multicomponent Synthesis of Fluorine‐Containing Bioactive Compounds and Drugs

open access: yesEuropean Journal of Organic Chemistry, Volume 28, Issue 38, October 15, 2025.
Multicomponent reactions are robust synthetic tools to assamble complex polyheterocycles and other interesting molecular architectures with potential application in medicinal chemistry, including their fluorine‐containing analogues. Fluorine atoms placed strategically into bioactive molecules often enhance essential pharmacokinetic parameters like ...
Ivette Morales‐Salazar   +7 more
wiley   +1 more source

Los debates en torno al ferrocarril en España anteriores a la creación de RENFE: el camino hacia el monopolio de Estado

open access: yesIberian Journal of the History of Economic Thought, 2016
Desde su nacimiento hasta la caída de la dictadura de Primo de Rivera, el ferrocarril se perfiló como una industria doblemente creadora de riqueza, estimulando por un lado la ya existente e impulsando el desarrollo económico por otro.
José Luis Malo Guillén   +1 more
doaj   +1 more source

EL APROVECHAMIENTO TURÍSTICO DEL FERROCARRIL CONVENCIONAL COMO VÍA DE IMPULSO TERRITORIAL: EL CASO DE LA LÍNEA DEL DUERO (PORTUGAL) COMO MODELO PARA EL FFCC ARANJUEZ-CUENCA-UTIEL

open access: yesCuadernos de Turismo, 2023
Ante la cada vez mayor importancia del ferrocarril en el contexto global, ya sea como medio de transporte, o bien, como producto turístico, en el presente trabajo se pretende proporcionar una alternativa al cierre al tráfico de la línea férrea Aranjuez ...
Alberto Azuara Grande
doaj   +1 more source

Cost‐Effective Paraffin Particles‐Based Thermochromic Composites for Smart Windows and Greenhouses

open access: yesSmall Structures, Volume 6, Issue 10, October 2025.
Polymer nanocomposite films undergo thermally induced transparent‐to‐opaque transition through the refractive index matching/mismatching between the embedded paraffin particles in their solid and liquid states and the polymer matrix. The coatings are highly transparent, show large transmittance modulation, high stability to humidity and UV light ...
Lorenzo Vallan   +4 more
wiley   +1 more source

Detection and Classification of Unmanned Aerial Vehicles Based on the Gramian Angular Field and Hilbert Curve

open access: yesDrones
The detection and identification of unmanned aerial vehicles (UAVs) using radio frequency (RF) signals becomes particularly challenging in congested spectral environments, where conventional approaches relying solely on spectral characteristics often ...
Yanqueleth Molina-Tenorio   +2 more
doaj   +1 more source

Ferrocarril Mexicano, túnel n° 16

open access: yes, 1890
I.O Anverso: "Ferrocarril Mexicano, túnel n° 16", "641", Firma: "Gove & North fot". V.F.
Gove & North
core   +1 more source

Tuning Pair and Higher‐Order Mutual Information Measures in Oscillator Systems with N$N$‐Dependent Frequencies

open access: yesAdvanced Theory and Simulations, Volume 8, Issue 1, January 2025.
Pair and higher‐order mutual information measures in many‐particle (N$N$) coupled quantum oscillators can be tuned by using ω=N−α$\omega =N^{-\alpha }$ one‐body potential intensities. Critical points appear in the measures as N$N$ is varied, when α$\alpha$ is a fractional value.
Saúl J.C. Salazar   +2 more
wiley   +1 more source

Dynamic Pedestrian Demand Estimation Using Data From Reidentification Sensors: A New Research Challenge

open access: yesJournal of Advanced Transportation, Volume 2025, Issue 1, 2025.
Many cities are currently working on the development of mobility policies aimed at improving the accessibility of transport infrastructures and the intermodality in the citizen’s daily travel. Some of these policies should focus on obtaining a more sustainable modal split distribution in the access to and egress from multimodal transportation hubs. The
Elena Díaz-Burgos   +4 more
wiley   +1 more source

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