Results 51 to 60 of about 593,505 (300)

Mechanical and material heterogeneity, strain localization and deformation rate effects in crushable expanded polystyrene foams

Frontiers in Mechanical Engineering
Low-density expanded polystyrene (EPS) foams are widely used in lightweight energy absorption systems such as helmets due to their ability to readily mold into complex geometries.
Francis Yao, Meet Joshi, Megan Bland-Rothgeb, Peter Cripton, Duane Cronin, John Magliaro   +5 more
doaj   +1 more source

Quantum-dot-like states in molybdenum disulfide nanostructures due to the interplay of local surface wrinkling, strain, and dielectric confinement

, 2019
The observation of quantum light emission from atomically thin transition metal dichalcogenides has opened a new field of applications for these material systems. The corresponding excited charge-carrier localization has been linked to defects and strain,
Carmesin, Christian, Erben, Daniel, Florian, Matthias, Jahnke, Frank, Lorke, Michael, Schulz, Alexander, Wehling, Tim O.   +6 more
core   +2 more sources

Rate dependent shear bands in a shear transformation zone model of amorphous solids [PDF]

, 2008
We use Shear Transformation Zone (STZ) theory to develop a deformation map for amorphous solids as a function of the imposed shear rate and initial material preparation.
D. Griggs, E. G. Daub, J. M. Carlson, J. S. Langer, M. Falk, M. L. Manning   +5 more
core   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

A Review of Theoretical, Experimental and Numerical Advances on Strain Localization in Geotechnical Materials

Applied Sciences
Strain localization is a critical phenomenon in geotechnical materials, serving as a precursor to the failure of engineering structures such as slopes, foundations, and tunnels. This paper presents a comprehensive review of the theoretical, experimental,
Yonghui Li, Anyuan Sun, Feng Zhu
doaj   +1 more source

Syn-Emplacement Fracturing in the Sandfell Laccolith, Eastern Iceland—Implications for Rhyolite Intrusion Growth and Volcanic Hazards

Frontiers in Earth Science, 2018
Felsic magma commonly pools within shallow mushroom-shaped magmatic intrusions, so-called laccoliths or cryptodomes, which can cause both explosive eruptions and collapse of the volcanic edifice.
Tobias Mattsson, Steffi Burchardt, Steffi Burchardt, Bjarne S. G. Almqvist, Erika Ronchin, Erika Ronchin   +5 more
doaj   +1 more source

Observation of heterogeneities in elastocaloric natural/wastes rubber composites

eXPRESS Polymer Letters, 2022
The strain-induced crystallization and elastocaloric properties of various natural rubber (NR)/ground tire rubber (GTR) blends, comprising waste particles of diverse sizes and contents, were investigated.
Nicolas Candau, Eduard Vives, Ana Ines Fernandez, Oguzhan Oguz, Guillaume Corvec, Carlos Eloy Federico, Joao Paulo Cosas Fernandes, Gregory Stoclet, Maria Lluisa Maspoch   +8 more
doaj   +1 more source

Strain localization driven by thermal decomposition during seismic shear [PDF]

, 2015
Field and laboratory observations show that shear deformation is often extremely localized at seismic slip rates, with a typical deforming zone width on the order of a few tens of microns. This extreme localization can be understood in terms of thermally
Brantut, N, Platt, JD, Rice, JR
core   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Correlation of the differential expression of PIK3R1 and its spliced variant, p55α, in pan‐cancer

Molecular Oncology, EarlyView.
PIK3R1 undergoes alternative splicing to generate the isoforms, p85α and p55α. By combining large patient datasets with laboratory experiments, we show that PIK3R1 spliced variants shape cancer behavior. While tumors lose the protective p85α isoform, p55α is overexpressed, changes linked to poorer survival and more pronounced in African American ...
Ishita Gupta, Yang Song, Madeleine Ndahayo, Anirudh Saxena, Theresa Guo, Dylan Z. Kelley, Jessica Gore, Andrew Hennigan, Alexa Anderson, John C. Papadimitriou, Daria A. Gaykalova   +10 more
wiley   +1 more source