Results 21 to 30 of about 6,447,976 (288)

Electronic stress tensor analysis of hydrogenated palladium clusters [PDF]

open access: yes, 2011
We study the chemical bonds of small palladium clusters Pd_n (n=2-9) saturated by hydrogen atoms using electronic stress tensor. Our calculation includes bond orders which are recently proposed based on the stress tensor. It is shown that our bond orders
A Filippetti   +44 more
core   +2 more sources

A Study on a New Method for Flexoelectric Coefficient Estimation of the Flexoelectric Unimorph Sensing Element

open access: yesApplied Mechanics, 2021
In a flexoelectric sensing element using bending mode, estimation of the flexoelectric coefficient was investigated using 3-D stress/strain analysis and experiments.
Seol Ryung Kwon, Yongrae Roh
doaj   +1 more source

Characterization Of Thermal Stresses And Plasticity In Through-Silicon Via Structures For Three-Dimensional Integration [PDF]

open access: yes, 2014
Through-silicon via (TSV) is a critical element connecting stacked dies in three-dimensional (3D) integration. The mismatch of thermal expansion coefficients between the Cu via and Si can generate significant stresses in the TSV structure to cause ...
Ho, P. S.   +4 more
core   +1 more source

Stress Analysis [PDF]

open access: yes, 1988
The following types of forces contribute to the stresses in a Dolos in a pack exposed to waves:1)Gravity forcesCompaction forces (mainly due to settlements, gravity and flow forces)2) Flow forces3) Impact forces (impacts between moving concrete blocks)
openaire   +2 more sources

Analysing the Generative Design of Payload Part for the 3D Metal Printing

open access: yesCommunications, 2023
Additive manufacturing provides the possibility to print complex generative designed bodies. The research deals with redesigning a payload part of a camera holder using generative design for selective laser melting.
Tamás Markovits   +2 more
doaj   +1 more source

The effect of heart rate variability biofeedback training on stress and anxiety: a meta-analysis [PDF]

open access: yes, 2017
BACKGROUND: Some evidence suggests that heart rate variability (HRV) biofeedback might be an effective way to treat anxiety and stress symptoms. To examine the effect of HRV biofeedback on symptoms of anxiety and stress, we conducted a meta-analysis of ...
Curtiss, Joshua E.   +2 more
core   +1 more source

Experimental investigation of the effect of test speed on rupture performance of synthetic yarns

open access: yesActa Polytechnica
This study experimentally investigated the effect of testing speed on the mechanical behaviour of five types of synthetic fibres – aramid, high-modulus polyethylene (HMPE), liquid crystal polymer (LCP), polyamide, and polyester – through yarn break load
Daniel Magalhães da Cruz   +5 more
doaj   +1 more source

Stress analysis in solid-liquid parts of solidifying castings

open access: yesMATEC Web of Conferences, 2019
In the paper, we present results of stress analysis in domains which are a mixture of solid and liquid phases. Such mixtures occur in solidifying castings and are a result of forming a structure with solid skeleton and filling of a liquid phase.
Gawrońska Elżbieta   +2 more
doaj   +1 more source

Nonlinear heart rate variability features for real-life stress detection. Case study : students under stress due to university examination [PDF]

open access: yes, 2011
Background: This study investigates the variations of Heart Rate Variability (HRV) due to a real-life stressor and proposes a classifier based on nonlinear features of HRV for automatic stress detection.
Bracale, Marcello   +2 more
core   +4 more sources

Analysis Of The Extrusion Process Of A Square Tube Multi-Channel Heat Pipe

open access: yesArchives of Metallurgy and Materials, 2015
Heat pipes have been recently in use for cooling purposes in various fields, including electronic circuit boards and vehicle parts that generate large amounts of heat.
Kim K.S., Kim J.Y.
doaj   +1 more source

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