Results 11 to 20 of about 1,386,732 (266)

Stress relaxation of near-critical gels [PDF]

open access: yesPhysical Review E, 2001
The time-dependent stress relaxation for a Rouse model of a crosslinked polymer melt is completely determined by the spectrum of eigenvalues of the connectivity matrix. The latter has been computed analytically for a mean-field distribution of crosslinks.
Broderix, K.   +3 more
openaire   +4 more sources

Stresses Inside Critical Nuclei

open access: yesThe Journal of Physical Chemistry B, 2004
The usual derivation of classical nucleation theory is inappropriate for crystal nucleation. In particular, it leads to a seriously flawed estimate of the pressure inside a critical nucleus. This has consequences for the prediction of possible metastable phases during the nucleation process. In this paper, we reanalyze the theory for crystal nucleation
Cacciuto, A., Frenkel, D.
openaire   +4 more sources

Stress failure of cement concretes under compression – synthesis of knowledge, conclusions

open access: yesJournal of Civil Engineering and Management, 2014
This paper presents a synthetic review of the existing knowledge on the stress failure of cement concretes under compression, based on the available literature and the authors’ own research.
Tomasz Gorzelanczyk, Jerzy Hoła
doaj   +1 more source

Critical condition parameters and kinetics of dynamic recrystallization for hot deformed 1 wt%Cr-1 wt%Mo rotor steel

open access: yesMaterials Research Express, 2020
Isothermal hot compression tests of low alloy 1 wt%Cr–1 wt%Mo medium carbon rotor steel were carried out over the temperature range from 850 °C–1050 °C under three strain rates $\left(\dot{\varepsilon }\right)$ varying from 0.001 s ^−1 –0.1 ^.1 s ^−1 ...
Sumit Kumar, Sumeer K Nath
doaj   +1 more source

Stress revisited: A critical evaluation of the stress concept

open access: yesNeuroscience & Biobehavioral Reviews, 2011
With the steadily increasing number of publications in the field of stress research it has become evident that the conventional usage of the stress concept bears considerable problems. The use of the term 'stress' to conditions ranging from even the mildest challenging stimulation to severely aversive conditions, is in our view inappropriate. Review of
Koolhaas JM   +16 more
openaire   +4 more sources

Critical applied stresses for a crack initiation from a sharp V-notch [PDF]

open access: yesFracture and Structural Integrity, 2014
The aim of the paper is to estimate a value of the critical applied stress for a crack initiation from a sharp V-notch tip. The classical approach of the linear elastic fracture mechanics (LELM) was generalized, because the stress singularity exponent ...
L. Náhlík   +2 more
doaj   +1 more source

Voids Nucleation at Inclusions of Various Shapes in Front of the Crack in Plane Strain

open access: yesArchives of Metallurgy and Materials, 2016
An analysis is presented of the stress field in and around inclusions of various shapes. Results were obtained by the finite element method. Inclusions were located within elementary cells located at the centre of the specimen next to the crack front ...
Neimitz A., Janus U.
doaj   +1 more source

Acidification of forest soils in Slovakia - causes and consequences

open access: yesJournal of Forest Science, 2006
In Slovakia, soil acidification remains an environmental and forestry related issue despite a sharp decrease in the S02. Recent monitoring of critical acid loads of Slovak forests show that around one third of Slovak forests are directly affected by ...
V. Pichler, E. Bublinec, J. Gregor
doaj   +1 more source

Critical stress of oval foil winding with epoxy coated insulation determined using measured equivalent modulus of elasticity

open access: yesAutomatika, 2020
In the distribution transformers design oval windings are used due to economic advantages. On the other hand, such windings are more susceptible to radial forces in a short circuit.
Nina Meško   +2 more
doaj   +1 more source

Performance and acceptability of the Stressful Life Events Screening Questionnaire in a chronic pain population: a mixed-methods study

open access: yesPAIN Reports, 2023
. Introduction:. Pain-related fear, anxiety, and avoidance may play key roles in the chronification of pain and related disability. For practitioners, knowledge about the source or drivers of these fears, including patients' exposure to potentially ...
Lene Therese Bergerud Linnemørken   +3 more
doaj   +1 more source

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