Results 51 to 60 of about 1,638,542 (312)
The microstructure and mechanical hardness of Inconel 718 (INC718) hexagonal honeycomb cellular structure manufactured by selective laser melting (SLM) was studied in this work. Non-heat-treated SLM-produced samples with cell wall thicknesses of 0.4, 0.6,
Paul Wood +3 more
core +1 more source
Assessment of myocardial strain and strain rate by tissue doppler echocar-diography [PDF]
The objective of the article is to review the current data on the method of quantitative evaluation of cardiac mechanics — assessment of myocardial strain and strain rate according to the results of the tissue Doppler echocardiography and prospects of ...
Ekimova N.A., Katkova LA., Furman N.V.
doaj
Both deformation temperature and strain rate affect the mechanical properties of β titanium alloy, and are related to the change of deformation mode in the process of plastic deformation. The effects of deformation temperature and strain rate coupling on
YAO Kai, MIN Xiaohua
doaj +1 more source
Drosophila park mutants serve as a model for Parkinson's disease. We used this strain to investigate the connection between oxidative stress and the circadian clock mechanism. We showed that increased oxidative stress affects the physiology of pacemaker cells, disrupting their daily structural plasticity. Lack of rhythmic signaling from pacemaker cells
Kamila Zientara +3 more
wiley +1 more source
Strain rate sensitivity of sintered silver nanoparticles using rate-jump indentation
Nanoindentation experiments were performed at room temperature on pressure-less sintered silver nanoparticles (AgNP) samples. Two representative die attach solder materials: sintered electrically conductive silver adhesive and conventional Sn-3.0Ag ...
冯义辉 +5 more
core +1 more source
Detonation Induced Strain in Tubes [PDF]
When a detonation wave propagates through a piping system, it acts as a traveling pressure load to the pipe wall. The detonation wave must be followed by an expansion wave in order to bring the combustion products to zero velocity at the ignition end ...
Karnesky, James Alan
core +1 more source
Contribution to evaluation of mechanical properties during impact loading [PDF]
The paper analyzes the influence of the impact rate of up to 120 ms-1 with a constant energy on the relative compression of high-grade unalloyed steels, Cu and Zn, and the evaluation of energy consumed during the impact bending test at the impact rate of
Buršák, M. +2 more
doaj
Measurements of Strain-Rate Distributions on Material After Shpb Impact
We have proposed a sophisticated novel method of the SHPB experiment to measure the local strain-rate distributions on a surface of the specimen by using mechanoluminescent materials combined with a high-speed camera and an image intensifier.
M. KAWAI +4 more
doaj +1 more source
Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee +7 more
wiley +1 more source
In vivo human cardiac shortening and lengthening velocity is region-dependent and not coupled with heart rate [PDF]
New Findings •What is the central question of this study? Regulation of cardiac function is typically achieved by changes in heart rate (HR) and cardiac shortening velocity (strain rate; SR), but their interdependence in vivo remains poorly ...
Stöhr, Eric J. +2 more
core +1 more source

