Results 31 to 40 of about 172,789 (120)

Network formation of tissue cells via preferential attraction to elongated structures

open access: yes, 2006
Vascular and non-vascular cells often form an interconnected network in vitro, similar to the early vascular bed of warm blooded embryos. Our time-lapse recordings show that the network forms by extending sprouts, i.e., multicellular linear segments.
Andras Czirok   +9 more
core   +1 more source

Total Semirelib Graph [PDF]

open access: yes, 2013
In this paper, the concept of Total semirelib graph of a planar graph is introduced. Authors present a characterization of those graphs whose total semirelib graphs are planar, outer planar, Eulerian, hamiltonian with crossing number ...
Goudar, Venkanagouda, Prasad, Manjunath
core   +2 more sources

Downconversion Master Slave OCT With a Bidirectional Sweeping Laser

open access: yesJournal of Biophotonics, Volume 18, Issue 12, December 2025.
ABSTRACT This paper explores the challenges of signal processing when using optical coherence tomography (OCT) imaging instruments driven by asymmetric MHz bidirectional sweeping lasers. A downconversion master–slave (DMS) method is proposed as a viable alternative to the traditional OCT protocol.
A. Martinez Jimenez   +8 more
wiley   +1 more source

Quantifying entanglement in two-mode Gaussian states [PDF]

open access: yes, 2017
Entangled two-mode Gaussian states are a key resource for quantum information technologies such as teleportation, quantum cryptography and quantum computation, so quantification of Gaussian entanglement is an important problem.
Ralph, Timothy C., Tserkis, Spyros
core   +2 more sources

Serial Chemical Crystallography for Autonomous Quantitative Phase Analysis in an Electron Microscope

open access: yesSmall Methods, Volume 9, Issue 12, December 1, 2025.
t‐SerialED, a novel electron diffraction method, enables rapid, high‐throughput structural analysis of nano‐sized materials. By adapting a batch‐by‐batch data collection approach, t‐SerialED integrates 3D reciprocal information to serial crystallography datasets.
Taimin Yang   +5 more
wiley   +1 more source

Physiological roles of lignins – tuning cell wall hygroscopy and biomechanics

open access: yesNew Phytologist, Volume 248, Issue 6, Page 2674-2706, December 2025.
Summary Lignins constitute the second most abundant carbon‐storing biopolymers in the biosphere. These phenolic polymers accumulate in different concentrations, compositions, and localisations within and between cell wall layers and cell types. Lignins were acquired during plant terrestrialisation 450 million years ago, and the diversification of their
Edouard Pesquet   +3 more
wiley   +1 more source

Concurrence classes for an arbitrary multi-qubit state based on positive operator valued measure

open access: yes, 2005
In this paper, we propose concurrence classes for an arbitrary multi-qubit state based on orthogonal complement of a positive operator valued measure, or POVM in short, on quantum phase.
Akhtarshenas S J   +15 more
core   +1 more source

Biomass production of tropical trees across space and time: The shifting roles of diameter growth and wood density

open access: yesJournal of Ecology, Volume 113, Issue 11, Page 3141-3158, November 2025.
Diameter growth is an important and good indicator of forest carbon production. However, size‐related changes in wood density, which are usually neglected, are critical for accurate short‐ and long‐term carbon assessments, especially in tropical humid sites.
Bruna Hornink   +18 more
wiley   +1 more source

Ga+, In+ and Tl+ Impurities in Alkali Halide Crystals: Distortion Trends

open access: yes, 2000
A computational study of the doping of alkali halide crystals (AX: A = Na, K; X = Cl, Br) by ns2 cations (Ga+, In+ and Tl+) is presented. Active clusters of increasing size (from 33 to 177 ions) are considered in order to deal with the large scale ...
Akhtar M. J.   +20 more
core   +1 more source

Growth–survival trade‐off in temperate trees is weak and restricted to late‐successional stages

open access: yesJournal of Ecology, Volume 113, Issue 11, Page 3466-3477, November 2025.
Our findings highlight a role of disturbances in filtering life‐history strategies and their potential impact on forest dynamics and global carbon cycling, but also a need to better understand the mediating processes of tree demographic trade‐offs.
Kauane Maiara Bordin   +12 more
wiley   +1 more source

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