Results 71 to 80 of about 32,338 (269)

Pore Water Pressure Generation and Energy Dissipation Characteristics of Sand–Gravel Mixtures Subjected to Cyclic Loading

open access: yesGeotechnics
At least 32 case histories have shown that liquefaction can occur in gravelly soils (both natural deposits and manmade reclamations) during severe earthquakes, causing large ground deformations and severe damage to civil infrastructures.
Abilash Pokhrel, Gabriele Chiaro
doaj   +1 more source

Liquefaction Resistances of Unsaturated Non-Plastic Silt

open access: yesSoils and Foundations, 2009
It has been pointed out that there are two possible mechanisms that enhance liquefaction resistances of unsaturated sand. The first mechanism is where air in a partially saturated sand mass plays a role of absorbing generated excess pore pressures by reducing its volume.
Mitsu Okamura, Kohei Noguchi
openaire   +2 more sources

The Future of Hydrogen‐Powered Aviation: Technologies, Challenges, and a Strategic Roadmap for Sustainable Decarbonization

open access: yesAdvanced Energy and Sustainability Research, EarlyView.
Hydrogen‐powered aviation offers a transformative pathway to zero‐emission flight by eliminating in‐flight CO2 emissions. Key considerations include propulsion systems (fuel cells and hydrogen combustion), cryogenic storage and insulation challenges, infrastructure and cost barriers, and supply‐chain constraints.
Mubasshira   +4 more
wiley   +1 more source

Impact of methods used to reconstitute tailings specimens on the liquefaction potential assessment of tailings dams

open access: yesREM: International Engineering Journal
The aim of this research is to investigate the liquefaction susceptibility of silt sandy mining tailings by experimental laboratory techniques. The main aspect analyzed is how techniques of sample reconstitution impact the results obtained in static ...
Mariana Martins Corrêa   +1 more
doaj   +1 more source

Triaxial compression tests on a crushable sand in dry and wet conditions [PDF]

open access: yes, 2015
A calcareous sand from the Persian Gulf is subjected to a series of dry and fully drained saturated triaxial shear tests. The samples are prepared at relative densities of 65% and either left dry or saturated. They are consolidated to confining pressures
Haegeman, Wim, Van Impe, PO, Wils, L
core   +1 more source

A critical review of porous adsorbents for air separation: From fundamental insights to rational adsorbent design

open access: yesAIChE Journal, EarlyView.
Abstract Air separation via selective adsorption using porous adsorbents offers energy‐efficient alternatives to cryogenic distillation for producing high‐purity O2 and N2. Adsorbent efficacy depends on balancing selectivity, durability, and performance consistency across varying conditions. This comprehensive review critically discusses the design and
Tianqi Wang   +9 more
wiley   +1 more source

Effectiveness of sheet pile enclosure with drainage ability as liquefaction countermeasure for river levees

open access: yesSoils and Foundations
Sheet-pile enclosures are often employed as liquefaction countermeasures for river levees in Japan. However, the stiffness of the sheet piles alone is often insufficient to maintain levees on liquefied foundation soil high enough to prevent overflooding.
Mitsu Okamura, Mizuki Suyama, Kohei Ono
doaj   +1 more source

Liquefaction of H2 molecules upon exterior surfaces of carbon nanotube bundles [PDF]

open access: yes, 2005
We have used molecular dynamics simulations to investigate interaction of H2 molecules on the exterior surfaces of carbon nanotubes (CNTs): single and bundle types.
Goddard, William A., III   +4 more
core   +1 more source

Phase‐Change Alloys Enable Localized Reversible Stiffening and Actuation in Steerable Eversion Tip‐Growing Robots

open access: yesAdvanced Intelligent Systems, EarlyView.
This work presents a tip‐growing eversion robot that uses phase‐changing alloys for reversible stiffening and localized actuation, achieving 43× stiffness modulation, 15× force amplification, and segmental steering. The system enables precise navigation and force delivery in constrained, tortuous pathways.
Shamsa Al Harthy   +4 more
wiley   +1 more source

Relationship between void characteristics and re-liquefaction resistance: An image analysis study

open access: yesSoils and Foundations
To scrutinize the impact of void characteristics on re-liquefaction resistance, a series of constant-volume cyclic bi-axial tests was conducted on an assembly of plastic rods. The first and second liquefaction stages involved the application of isotropic
R. Sukhumkitcharoen   +2 more
doaj   +1 more source

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