Results 11 to 20 of about 17,817 (232)

Wavelet analysis on pressure stimulated currents emitted by marble samples [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2006
This paper presents a wavelet based method of analysis of experimentally recorded weak electric signals from marble specimens which have undergone successive abrupt step loadings. Experimental results verify the existence of "memory effects" in
P. Kyriazis   +4 more
doaj   +6 more sources

Pressure stimulated currents in rocks and their correlation with mechanical properties [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2004
The spontaneous electrification of marble samples was studied while they were subjected to uniaxial stress. The Pressure Stimulated Current (PSC) technique was applied to measure the charge released from compressed Dionysos marble samples, while they ...
I. Stavrakas   +6 more
doaj   +7 more sources

Pressure‐Stimulated Rock Current as Loading Diorite to Failure: Particular Variation and Holistic Mechanisms

open access: yesJournal of Geophysical Research: Solid Earth, 2022
Abstract The variations in the electric property of loaded rocks are essential in understanding the rock dynamics and fracturing process. Decades of laboratory experiments have revealed different behaviors of stress‐stimulated electric current due to the effects of rock types, loading modes, and detection methods.
Wenfei Mao   +6 more
openaire   +3 more sources

Thermal-stimulated pressure and current studies of bound water in lysozyme

open access: yesBiophysical Journal, 1977
The state of bound water in crystalized lysozyme was studied by four techniques: electret thermal depolarization currents, thermal-stimulated pressure, isothermal polization decay, and thermogravimetry. Hydration levels ranged from 0 to 40 mg water/g protein.
Celaschi, S., Mascarenhas, S.
openaire   +2 more sources

Thermoactivational spectroscopy of polyethylene polymer films with an ethylene-vinyl acetate copolymer

open access: yesPhysics of Complex Systems, 2023
The article reports the results of the study of polymer films based on the blend of high-pressure polyethylene (LDPE) and the ethylene-vinyl acetate copolymer (EVA, sevilen). The films were investigated with thermally stimulated depolarization.
Мансур Флоридович Галиханов   +3 more
doaj   +1 more source

Comparative assessment of the acoustic activity and the Pressure Stimulated Voltage in marble specimens under compression

open access: yesFracture and Structural Integrity
The temporal evolution of the electric activity generated in marble specimens under uniaxial compression is analyzed and quantified in terms of the Pressure Stimulated Voltage (Electric Potential) developed.
Stavros K. Kourkoulis   +3 more
doaj   +3 more sources

SuperKEKB vacuum system operation in the last 6 years operation

open access: yesPhysical Review Accelerators and Beams, 2023
The operation of the SuperKEKB has been ongoing since 2016. The vacuum systems of the main ring (MR) which consists of a 7-GeV electron ring (HER) and a 4-GeV positron ring (LER), the damping ring (DR) for 1.1 GeV positrons in the middle of the injector ...
Y. Suetsugu   +7 more
doaj   +1 more source

Characteristics of Pressure Stimulated Current and Damage Evolution of Granite under Progressive Uniaxial Loading

open access: yesSustainability, 2023
The application of load on rock materials stimulates a weak current known as Pressure Stimulated Current (PSC). This study focuses on investigating the damage evolution of granite rocks through the analysis of PSC responses. Uniaxial loading experiments were conducted on granite samples, and the accompanying PSC was measured in real-time.
Dexing Li   +6 more
openaire   +1 more source

Transcranial direct current stimulation modulates autonomic nervous system and reduces ambulatory blood pressure in hypertensives

open access: yesClinical and Experimental Hypertension, 2021
Purpose: Transcranial direct current stimulation (tDCS) seems to positively modulate the autonomic nervous system in different clinical conditions and healthy subjects; however, its effects on hypertensive (HTN) patients are not completely known. This study aimed to evaluate the effects of a tDCS or SHAM session (20 min) on blood pressure (BP) and ...
Bruno Rodrigues   +8 more
openaire   +3 more sources

Restoring stone monuments: Enlightening critical details by the combined use of innovative sensing techniques

open access: yesFracture and Structural Integrity, 2019
The experience gathered during the implementation of long series of laboratory experimental protocols, aiming to study the mechanical response of restored structural elements, is summarized.
Ermioni Pasiou
doaj   +3 more sources

Home - About - Disclaimer - Privacy