Results 61 to 70 of about 2,608,665 (304)

Study of size effects in thin films by means of a crystal plasticity theory based on DiFT [PDF]

, 2007
In a recent publication, we derived the mesoscale continuum theory of plasticity for multiple-slip systems of parallel edge dislocations, motivated by the statistical-based nonlocal continuum crystal plasticity theory for single-glide due to Yefimov et ...
Limkumnerd, Surachate, Van der Giessen, Erik   +1 more
core   +3 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Origin of back stress generation during tensile deformation of a heterostructured titanium alloy: An in-situ EBSD study on local slip system activation

Journal of Materials Research and Technology
Revealing the origin of back stress generation is important for the design of heterostructured metals and alloys. Here, we study the back stress generation during tensile deformation in a heterostructured Ti–6Al–4V alloy via in-situ scanning electron ...
Lingjian Meng, Yuyue Wang, Xin Li, Zhihua Wang, Zhengyi Jiang, Jingwei Zhao   +5 more
doaj   +1 more source

Unloaing and re-loading features of pre-strained steel at low temperature [PDF]

, 2013
In the present work the response of medium carbon steel is investigated experimentally and information on the features of initial loading, unloading, re-loading and inverse loading processes is collected.
Akiyama, Masayoshi, Dongdong, Li
core  

Interactions of cosmological gravitational waves and magnetic fields

, 2009
The energy momentum tensor of a magnetic field always contains a spin-2 component in its anisotropic stress and therefore generates gravitational waves.
Elisa Fenu, M. Abramowitz, R. Durrer, Ruth Durrer, S. Weinberg   +4 more
core   +2 more sources

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

THE RELATIONSHIP BETWEEN STRESS LEVEL AND SITTING DURATION WITH COMPLAINTS OF LOWER BACK PAIN

Jurnal Kedokteran Diponegoro
Background: Low Back Pain (LBP) is the most complained of musculoskeletal problem in the world. One of the factors causing low back pain is stress. Medical students are at high risk of experiencing LBP due to several factors such as high stress levels ...
Dean Nur Aswitiyah Winganti, Erna Setiawati, Rahmi Isma Asmara Putri   +2 more
doaj   +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

Perceived stress and lower back pain amongst nurses during the SARS-CoV-2, across hospitals in Durban, South Africa

Curationis
Background: The coronavirus disease 2019 (COVID-19) pandemic strained the healthcare sector and workers. Nurses experienced stress and burnout because of strain in resources, limited staff and exposure risk.
Laralyn L. Naidoo, Jed L. Davidson
doaj   +1 more source