Results 51 to 60 of about 6,670,598 (322)

Seismic Attribute Analyses and Attenuation Applications for Detecting Gas Hydrate Presence

open access: yesGeosciences, 2021
Identifying gas hydrates in the oceanic subsurface using seismic reflection data supported by the presence of a bottom simulating reflector (BSR) is not an easy task, given the wide range of geophysical methods that have been applied to do so. Though the
Roberto Clairmont   +3 more
doaj   +1 more source

Wetland Quality as a Determinant of Economic Value of Ecosystem Services: an Exploration [PDF]

open access: yesarXiv, 2022
Wetland quality is a critical factor in determining values of wetland goods and services. However, in many studies on wetland valuation, wetland quality has been ignored. While those studies might give useful information to the local people for decision-making, their lack of wetland quality information may lead to the difficulty in integrating wetland ...
arxiv  

Dissipation of mechanical energy in fused silica fibers [PDF]

open access: yes, 1999
For thermal noise considerations of LIGO suspensions, the sources of dissipation in the suspending fibers must be analyzed. To determine the dissipation induced by the surface of fused silica fibers, we measured the quality factor of fibers having ...
Andri M. Gretarsson   +3 more
core   +2 more sources

Performance of Textile Mask Materials in Varied Humidity: Filtration Efficiency, Breathability, and Quality Factor

open access: yesApplied Sciences, 2022
During the COVID-19 pandemic, reusable masks became ubiquitous; these masks were made from various fabrics without guidance from the research community or regulating agencies. Though reusable masks reduce the waste stream associated with disposable masks
Joelle M. Segovia   +5 more
doaj   +1 more source

Resonant Characteristics of Rectangular Microcantilevers Vibrating Torsionally in Viscous Liquid Media [PDF]

open access: yes, 2012
The resonant characteristics of rectangular microcantilevers vibrating in the torsional mode in viscous liquid media are investigated. The hydrodynamic load (torque per unit length) on the vibrating beam due to the liquid was first determined using a ...
Brand, Oliver   +5 more
core   +3 more sources

Seismic pulse propagation with constant Q and stable probability distributions

open access: yesAnnals of Geophysics, 1997
The one-dimensional propagation of seismic waves with constant Q is shown to be governed by an evolution equation of fractional order in time, which interpolates the heat equation and the wave equation.
M. Tomirotti, F. Mainardi
doaj   +1 more source

An Experimental and Theoretical Study of Impact of Device Parameters on Performance of AlN/Sapphire-Based SAW Temperature Sensors

open access: yesMicromachines, 2021
The impact of device parameters, including AlN film thickness (hAlN), number of interdigital transducers (NIDT), and acoustic propagation direction, on the performance of c-plane AlN/sapphire-based SAW temperature sensors with an acoustic wavelength (λ ...
Hongrui Lv   +9 more
doaj   +1 more source

Improved Transition Metal Dichalcogenides-Based Surface Plasmon Resonance Biosensors

open access: yesCondensed Matter, 2019
Surface plasmon resonance (SPR) biosensors based on transition metal dichalcogenides (TMDC) materials have shown improved performance in terms of sensitivity, detection accuracy (DA), and quality factor (QF) over conventional biosensors.
Mohammad Hasibul Hasan Hasib   +3 more
doaj   +1 more source

Microdosimetry Study of Proton Quality Factor Using Analytic Model Calculations

open access: yesApplied Sciences, 2022
The quality factor (Q) is formally linked to the stochastic (e.g., carcinogenic) risk of diverse ionizing radiations at low doses and/or low dose rates.
Alexis Papadopoulos   +5 more
doaj   +1 more source

Photonic Crystal Cavities in Silicon Dioxide [PDF]

open access: yes, 2009
One dimensional nano-beam photonic crystal cavities fabricated in silicon dioxide are considered in both simulation and experiment. Quality factors of over 10^4 are found via simulation, while quality factors of over 5*10^3 are found in experiment, for cavities with mode volumes of 2.0 cubic wavelengths (in oxide) and in the visible wavelength range ...
arxiv   +1 more source

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