Results 21 to 30 of about 3,638,288 (229)

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou, Konstantina Dipla, Danai Faitatzidou, Fotini Iatridi, Areti Georgiou, Artemios Karagiannidis, Erasmia Sampani, Chrysostomos Dimitriadis, Aggelos Koutlas, Andreas Zafeiridis, Pantelis Sarafidis   +10 more
wiley   +1 more source

Modeling of torsion stress giant magnetoimpedance in amorphous wires with negative magnetostriction

, 2007
A model describing the influence of torsion stress on the giant magnetoimpedance in amorphous wires with negative magnetostriction is proposed. The wire impedance is found by means of the solution of Maxwell equations together with the Landau-Lifshitz ...
Antonov, Atkinson, Atkinson, Belancourt, Belancourt, Blanco, Blanco, Blanco, Blanco, Buznikov, C.O. Kim, Chen, Chen, Cobeño, Duque, Echavarrieta, Hernando, Knobel, Knobel, Kraus, Losin, Machado, Makhnovskiy, Melo, Mohri, Mohri, Mohri, N.A. Buznikov, Panina, Panina, Shen, Shen, Squire, Sánchez, Tejedor, Usov, Usov, Vázquez, Vázquez, Vázquez   +39 more
core   +1 more source

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

FEBS 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

The effect of vibratory stress on the welding microstructure and residual stress distribution [PDF]

, 2001
Previous studies have suggested that weld microstructure may be modified by the presence of static stresses. In this investigation, vibratory stress was applied to mild steel specimens while they were being welded to observe its effect on the residual ...
Munsi, A.S.M.Y., Waddell, A.J., Walker, C.A.   +2 more
core  

Statistical Mechanics of Stress Transmission in Disordered Granular Arrays

, 1999
We give a statistical-mechanical theory of stress transmission in disordered arrays of rigid grains with perfect friction. Starting from the equations of microscopic force and torque balance we derive the fundamental equations of stress equilibrium.
B. Miller, C. H. Liu, D. M. Mueth, D. M. Wood, D. V. Grinev, H. M. Jaeger, J. P. Wittmer, M. E. Cates, R. M. Nedderman, S. F. Edwards, S. N. Coppersmith   +10 more
core   +1 more source

Rheology of Granular Materials: Dynamics in a Stress Landscape [PDF]

, 2009
We present a framework for analyzing the rheology of dense driven granular materials, based on a recent proposal of a stress-based ensemble. In this ensemble fluctuations in a granular system near jamming are controlled by a temperature-like parameter ...
Bouchaud J.-P., Callen H., Glasstone S., Goldenfeld N.   +3 more
core   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Generic, Geometric Finite Element Analysis of the Transtibial Residual Limb and Prosthetic Socket [PDF]

, 1997
Finite element analysis was used to investigate the stress distribution between the residual limb and prosthetic socket of persons with transtibial amputation (TTA).
Childress, Dudley S., Silver-Thorn, Barbara   +1 more
core   +1 more source

Micromechanical response of fibre-reinforced materials using the boundary element technique [PDF]

, 2003
The Boundary Element Method (BEM) and the Embedded Cell Approach (ECA) have been used to analyse the effects of constituent material properties and fibre spatial distribution on the localised behaviour of a transversely loaded, unidirectional fibre ...
Henshall, JL, Knight, MG, Wrobel, LC
core   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source