Results 61 to 70 of about 3,610,061 (275)

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Dispersive Transport Described by the Generalized Fick Law with Different Fractional Operators

open access: yesFractal and Fractional, 2020
The approach based on fractional advection–diffusion equations provides an effective and meaningful tool to describe the dispersive transport of charge carriers in disordered semiconductors.
Renat T. Sibatov, HongGuang Sun
doaj   +1 more source

Turbulent Pair Diffusion

open access: yes, 2002
Kinematic Simulations of turbulent pair diffusion in planar turbulence with a -5/3 energy spectrum reproduce the results of the laboratory measurements of Jullien Phys. Rev. Lett.
F. Nicolleau   +6 more
core   +1 more source

Diffusion on diffusing particles

open access: yesDiffusion Fundamentals, 2007
We investigate random walk of a particle constrained on cells, where cells behave as a lattice gas on a two dimensional square lattice. By Monte Carlo simulation, we obtain the mean first passage time of the particle as a function of the density and temperature of the lattice gas. We find that the transportation of the particle becomes anomalously slow
Imoto, Yu, Odagaki, Takashi
openaire   +2 more sources

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Explaining the Diffusion of Project ECHO

open access: yesImplementation Science Communications
Project Extension for Community Healthcare Outcomes (Project ECHO), a telementoring intervention in which medical specialists share knowledge with medical generalists, has spread to many sites during its 22 years, reaching providers in nearly 200 ...
James W. Dearing, R. Sam Larson
doaj   +1 more source

Minería y vulnerabilidad de los territorios rurales en los Andes ecuatorianos: evidencias desde la provincia del Azuay

open access: yesCuadernos de Geografía: Revista Colombiana de Geografía, 2018
En los Andes ecuatorianos, la agricultura familiar se encuentra desde hace varias décadas en una situación de gran vulnerabilidad. A pesar de la reciente renovación del discurso político en Ecuador y del advenimiento de la era del “Buen Vivir”, el auge ...
Julio A. Alvarado Vélez, Nasser Rebaï
doaj   +1 more source

Diffusion of heat, energy, momentum, and mass in one-dimensional systems

open access: yes, 2013
We study diffusion processes of local fluctuations of heat, energy, momentum, and mass in three paradigmatic one-dimensional systems. For each system, diffusion processes of four physical quantities are simulated and the cross correlations between them ...
D. Forster   +8 more
core   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

A new experimental result indicating 3 separate phase fields of ε, ε1, ε2 and the estimation of diffusion coefficients in the Mn–Zn system

open access: yesJournal of Alloys and Metallurgical Systems
The Mn–Zn system, technologically crucial for galvanized Mn–containing steels and potential ZnMn–based biomaterials, has been studied using the conventional diffusion couple technique.
Shubhangini Yadav, Varun A. Baheti
doaj   +1 more source

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