Results 51 to 60 of about 540,714 (317)

Influence of Chemical Heterogeneity and Third Body on Adhesive Strength: Experiment and Simulation

Frontiers in Mechanical Engineering, 2021
We investigate experimentally and numerically the influence of chemical heterogeneity and of third-body particles on adhesive contact. Chemical heterogeneity is generated by chemical treatment of the contacting bodies changing locally the surface energy.
Iakov A. Lyashenko, Iakov A. Lyashenko, Qiang Li, Valentin L. Popov, Valentin L. Popov   +4 more
doaj   +1 more source

Energy and force analysis of linear friction welds in medium carbon steel [PDF]

, 2010
The linear friction welding process is rapidly developing into an important manufacturing technology for high quality joining of engineering materials.
Colegrove, Paul A., Addison, Adrian C., U. U. Ofem, M. J. Russell, A. Addison, Ofem, Usani Unoh, P. A. Colegrove, Russell, Michael J.   +7 more
core   +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

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

INDENTATION OF FLAT-ENDED AND TAPERED INDENTERS WITH POLYGONAL CROSS-SECTIONS

Facta Universitatis. Series: Mechanical Engineering, 2016
Using the Boundary Element Method, we numerically study the indentation of prismatic and tapered indenters with polygonal cross-sections. The contact stiffness of punches with flat bases in the form of a triangle and a square as well as a number of ...
Qiang Li, Valentin L. Popov
doaj   +1 more source

The crystal structure of the Borrelia burgdorferi nicotinamidase BBE22 resolves a long‐standing annotation error

FEBS Open Bio, EarlyView.
The crystal structure of Borrelia burgdorferi nicotinamidase (PncA/BBE22) reveals the correct full‐length protein initiated from a non‐canonical AUU start codon. The structure validates previous biochemical findings and resolves a long‐standing annotation error, demonstrating that the truncated database sequence is structurally incompatible with the ...
Kalvis Brangulis
wiley   +1 more source

TIG Wire and Arc Additive Manufacturing of 5A06 Aluminum Alloy

Cailiao gongcheng, 2017
Wire and arc additive manufacturing(WAAM) was investigated by tungsten inert gas arc welding method(TIG), in which φ1.2mm filler wire of aluminum alloy 5A06(Al-6Mg-Mn-Si) was selected as deposition metal.
HUANG Dan, ZHU Zhi-hua, GENG Hai-bin, XIONG Jiang-tao, LI Jing-long, ZHANG Fu-sheng   +5 more
doaj   +1 more source

On the association between microhardness, corrosion resistance and microstructure of probeless friction stir spot welded Al–Li joint

Journal of Materials Research and Technology, 2021
The precipitation behavior and development of grain structure have been investigated to reveal their association with the microhardness and corrosion resistance of probeless friction stir spot welded (P-FSSW) joint of an Al–Li alloy.
Q. Chu, S.J. Hao, W.Y. Li, X.W. Yang, Y.F. Zou, D. Wu, A. Vairis   +6 more
doaj   +1 more source

IV Thrombolysis Facilitates Interventional Reperfusion in Non‐Cardioembolic but Not Cardioembolic Stroke

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Intravenous thrombolysis (IVT) before thrombectomy for ischemic stroke may alter clot structure and procedural performance. We investigated how IVT relates to thrombectomy metrics across stroke etiologies. Methods We performed a time‐to‐event analysis of consecutive patients with anterior circulation large vessel occlusion (acLVO ...
Annahita Sedghi, Daniel P. O. Kaiser, Martin Arndt, Norma J. Diel, Erik Simon, Witold H. Polanski, Volker Puetz, Hagen B. Huttner, Timo Siepmann   +8 more
wiley   +1 more source

Friction in Adhesive Contact Between a Rough Hard Indenter and Smooth Soft Elastomer Layer

Machines
The friction between a hard steel indenter and a soft elastomer is studied experimentally. To investigate the influence of roughness, a series of experiments was conducted utilizing an indenter with varying degrees of surface roughness. There is a strong
Iakov A. Lyashenko, Thao H. Pham, Valentin L. Popov   +2 more
doaj   +1 more source