Results 71 to 80 of about 214,191 (310)

Three-Dimensional Dynamic Finite Element Modeling of Transition Zones in Ballasted High-Speed Tracks. [PDF]

JES: Journal of Engineering Sciences
Transition zones in railway tracks, where vertical stiffness changes abruptly such as between ballasted tracks and rigid structures like culverts or bridges, pose significant challenges in high-speed rail lines.
Ahmed Saied Mohammed Hassan, Ahmed Abdelmoamen Khalil, Ahmed Ahmed Elsonbaty, Hassan Younis   +3 more
doaj   +1 more source

Systemic dysregulation of apolipoproteins in amyotrophic lateral sclerosis serum

FEBS Open Bio, EarlyView.
Amyotrophic lateral sclerosis (ALS) is a fatal disease that damages motor neurons. This study found that people with ALS show significant changes in blood fats and the proteins that carry them. Several apolipoproteins were higher, lipid balances were altered, and normal protein–lipid relationships were disrupted.
Finula I. Isik, Russell Pickford, Hannah C. Timmins, Olivier Piguet, Glenda M. Halliday, Matthew C. Kiernan, Woojin Scott Kim   +6 more
wiley   +1 more source

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

FEBS Open Bio, EarlyView.
Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young, Omar Arias‐Gaguancela, Fiona Gibson, Morgan Grainger, Jodie Score, Amit Nathubhai, Mauricio Cafiero, Lee Richard Machado   +7 more
wiley   +1 more source

Vertical Co-ordanitaion in Transition Agriculture: a Hungarian Cooperative Case Study [PDF]

The agriculture is traditional risky business, but in transition countries agricultural producers should face some additional difficulties. The agri-food chains are still suffering from underdeveloped market institutions creating severe barriers for ...
Imre Ferto, Gabor G. Szabo
core  

Investigating the Influence of Auxiliary Rails on Dynamic Behavior of Railway Transition Zone by a 3D Train-Track Interaction Model

Latin American Journal of Solids and Structures
Abrupt track vertical stiffness variations along railway tracks can lead to increased dynamic loads, asymmetric deformations, damaged track components, and consequently, increased maintenance costs.
H. Heydari-Noghabi, J. N. Varandas, M. Esmaeili, J. Zakeri   +3 more
doaj   +1 more source

The use of Strong Magnetic Field Treatment for Preparation of Proton Exchange Membrane Doped by SeO2 and its electrochemical properties

International Journal of Electrochemical Science, 2017
48% sulfonation degree SPEEK membranes were prepared with rare earth nanoparticles doped and strong horizontal and vertical magnetic field treatment. The experimental results show that the dopant evenly dispersed in the matrix, and took place acid-base ...
Zhengping Zhao, Jiajie Hu, Zeping Zhou, Mingqiang Zhong   +3 more
doaj   +1 more source

Refinement of amino‐acid conformation vs. difference density maps in time‐resolved serial femtosecond crystallography data analysis

FEBS Open Bio, EarlyView.
The dFoCC pipeline starts with observed DED and resting‐state coordinates, which are then used to generate a library of triggered states. Correlation analysis of the calculated DED features of each candidate vs observed DED permits quantitative evaluation of candidate structural quality.
Meng Iao Fong, Yuhei Hosokawa, Lars Oliver Essen, Manuel Maestre‐Reyna   +3 more
wiley   +1 more source

Vertical upward flow patterns in small diameter tubes

, 2005
Two-phase flow patterns were studied in vertical small diameter tubes using R134a as the working fluid. The observed flow patterns include bubbly, dispersed bubble, confined bubble, slug, churn, annular and mist flow.
Chen, L, Tian, YS, Karayiannis, TG
core  

Cubic vertex-transitive graphs on up to 1280 vertices

Journal of Symbolic Computation, 2013
A graph is called cubic and tetravalent if all of its vertices have valency 3 and 4, respectively. It is called vertex-transitive and arc-transitive if its automorphism group acts transitively on its vertex-set and on its arc- set, respectively. In this paper, we combine some new theoretical results with computer calculations to construct all cubic ...
Potočnik, P, SPIGA, PABLO, Verret, G.
openaire   +2 more sources

Early‐life high‐fat diet exposure increases Achilles tendon stiffness and induces transcriptomic alterations

FEBS Open Bio, EarlyView.
Early‐life exposure to a high‐fat diet altered intact Achilles tendons in rat offspring, making them thinner, stiffer, and molecularly distinct even without injury. These findings suggest that developmental high‐fat diet exposure may impair tendon quality and increase susceptibility to mechanical overload or tendon injury later in life.
Heyong Yin, Ziyang Yuan, Wenli Jiang, Ai Guo   +3 more
wiley   +1 more source