Results 51 to 60 of about 647,114 (308)

Numerical upscaling of the permeability of a randomly cracked porous medium [PDF]

open access: yes, 2008
The equivalent permeability of a randomly cracked porous material is studied using a finite element program in which a four-nodes zero-thickness element is implemented for modelling the cracks.
Ghabezloo, Siavash, Pouya, Ahmad
core   +3 more sources

On the spectrum of a waveguide with periodic cracks

open access: yes, 2010
The spectral problem on a periodic domain with cracks is studied. An asymptotic form of dispersion relations is calculated under assumption that the opening of the cracks is ...
Ammari H   +5 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

Detection and Evaluation of Construction Cracks through Image Analysis Using Computer Vision

open access: yesApplied Sciences, 2023
The introduction of artificial intelligence methods and techniques in the construction industry has fostered innovation and constant improvement in the automation of monitoring and control processes at construction sites, although there are areas where ...
Alexandre Almeida Del Savio   +4 more
doaj   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

Mechanical Properties of Self-Healing Concrete with Dawson Microcapsule

open access: yesBuildings
Concrete structure integrity is significantly compromised by the primary problem of cracking. Typically, surface cracking (predominantly shrinkage-induced and thermal microcracking) is rectified using costly and time-consuming repair methods involving ...
Hossein Khosravi   +2 more
doaj   +1 more source

On utilization of elliptical rings in assessing cracking tendency of concrete [PDF]

open access: yes, 2014
A new experimental method by utilizing elliptical rings to replace circular rings recommended by ASTM and AASHTO was explored for assessing cracking potential of concrete and other cement-based materials under restrained condition.
Dong, W, Oladiran, OG, Zhou, X
core   +3 more sources

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

open access: yesFEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva   +10 more
wiley   +1 more source

Torsional Behavior of Pylon Columns with Edge Cracks in Suspension Bridges Under Wind Loads

open access: yesBuildings
Cracks inevitably develop in the pylon structures of suspension bridges due to external forces such as wind loads. Cracks are a primary cause of torsional damage to the key supporting structures of suspension bridges.
Nan Liu   +7 more
doaj   +1 more source

Calculation methods analysis of cracked reinforced concrete bending elements curvatures / Supleišėjusių lenkiamųjų gelžbetoninių elementų kreivių skaičiavimo metodų analizė

open access: yesMokslas: Lietuvos Ateitis, 2011
This paper describes three methods of curvatures calculating, which are used in STR, EC2 and EMM. Describes, what influence for the average curvature of cracked elements have cracked and uncracked sections in the different methodologies.
Algis Seniūnas
doaj   +1 more source

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