Results 71 to 80 of about 126,673 (254)

Reconstructing the Holocene explosive eruptive history of the Erciyes volcano (Turkey) using proximal and distal tephra records

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Mount Erciyes, the largest active volcano of Central Anatolia (Turkey), erupted explosively during the Holocene, producing the Karagüllü, Perikartin and Dikkartin tuff rings. Even though major cities like Kayseri and its ~1 million residents sit directly on these pyroclastic deposits, the timing and magnitude of the explosive eruptions have ...
Ivan Sunyé‐Puchol   +12 more
wiley   +1 more source

Wavelet-based vibration denoising for structural health monitoring

open access: yesUrban Lifeline
In the context of civil engineering applications, vibration responses are complex, exhibiting variations in time and space and often containing nonlinearity and uncertainties not considered during data collection. These responses can also be contaminated
Ahmed Silik   +5 more
doaj   +1 more source

Does Palsa Thaw in Northern Finland Contribute to Remobilisation of Metals Accumulated in Peat Into Surface Waters?

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Permafrost is rapidly degrading in the sporadic zone, including palsa mires in Scandinavia. Peatlands in the area have likely accumulated heavy metals from atmospheric deposition of industrial contaminants in the wider region. As the palsa mire chemical composition is not well known, and in other permafrost regions the permafrost thaw may ...
Joanna Katarzyna Jóźwik   +7 more
wiley   +1 more source

Strengths of sulfur-basalt concretes [PDF]

open access: yes
Sulfur used in bonding high strength basalt aggregates to form sulfur-basalt ...
Bates, R. C., Crow, L. J.
core   +1 more source

Experimental Modal Analysis‐Driven Gaussian Process Regression Modeling of Rectangular Steel Beams With Various Hole Geometries

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Understanding the dynamic behavior of structural components is crucial for optimizing performance and ensuring structural integrity. This study presents a new method that combines a systematic experimental investigation of four distinct hole geometries (circular, square, compact rectangular, and long rectangular) with varying hole counts, all ...
Amir Hossein Rabiee   +3 more
wiley   +1 more source

Self-Centering Precast Unit as Energy Dissipation Members in Precast Segmental Bridge Columns

open access: yesBuildings
This research aims to present a new generation of seismic-resisting systems designed for precast reinforced concrete (RC) bridge piers in modern sustainable cities to withstand moderate to high seismic activity.
Amr M. A. Moussa   +4 more
doaj   +1 more source

Thermographic non-destructive evaluation for natural fiber-reinforced composite laminates [PDF]

open access: yes, 2018
Natural fibers, including mineral and plant fibers, are increasingly used for polymer composite materials due to their low environmental impact. In this paper, thermographic non-destructive inspection techniques were used to evaluate and characterize ...
Avdelidis, Nicolas P.   +7 more
core   +3 more sources

A Coupled Chemohydraulic Model of a Hydration Experiment

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT This article presents a model for the hydration of periclase into brucite during water infiltration into a dry, pure periclase core. The hydration process proceeds in two stages. In Phase I, an infiltration front advances through the core while simultaneously triggering the hydration reaction.
Emmanuel Detournay, Vaughan Voller
wiley   +1 more source

The geology and geochronology of Al Wahbah maar crater, Harrat Kishb, Saudi Arabia [PDF]

open access: yes, 2014
Al Wahbah is a large (∼2.2 km diameter, ∼250 m deep) maar crater in the Harrat Kishb volcanic field in western Saudi Arabia. It cuts Proterozoic basement rocks and two Quaternary basanite lava flows, and is rimmed with an eroded tuff ring of debris from ...
Abdel Wahab, Antar   +4 more
core   +1 more source

Flax Fiber Flyash/Steel Reinforced Sustainable Composites in Corrosive Conditions: Mechanical, Wear, and Corrosion Properties

open access: yesPolymer Composites, EarlyView.
Materials used for fabricating sustainable composites. ABSTRACT A composite sample with 18% flax fiber flyash (FF) exhibits increased tensile strength (TS) and greater load‐transfer efficiency of the reinforcement under corrosive conditions.
Sumesh Keerthiveettil Ramakrishnan   +2 more
wiley   +1 more source

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