Results 81 to 90 of about 52,078 (314)

Post-depositional tectonic modifications of VMS deposits in Iberia and its economic significance [PDF]

open access: yes, 2011
The original stratigraphic relationships and structure of VMS deposits are commonly obscured by deformation. This can also affect their economic significance, as shown by several Iberian Pyrite Belt (IPB, SW Iberia) examples.
Castroviejo Bolibar, Ricardo   +2 more
core   +2 more sources

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

open access: yesAdvanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora   +4 more
wiley   +1 more source

Biomolecules in Pleistocene fossils from tropical cave indicate fossil biofilm

open access: yesScientific Reports
Finding biomolecules in fossils is a challenging task due to their degradation over time from physical, chemical, and biological factors. The primary hypothesis for explaining the presence of biomolecules in fossilized bones tissues suggests their ...
Daniel Vieira de Sousa   +3 more
doaj   +1 more source

Sedimentary processes and architecture of Upper Cretaceous deep-sea channel deposits : a case from the Skole Nappe, Polish Outer Carpathians [PDF]

open access: yes, 2018
Deep-sea channels are one of the architectonic elements, forming the main conduits for sand and gravel material in the turbidite depositional systems.
Łapcik, Piotr
core   +2 more sources

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

Book Review: Experimental Archaeology and Fire. The Investigation of a Burnt Reconstruction at West Stow Anglo-Saxon Village by Jess Tipper

open access: yesEXARC Journal, 2013
What should an archaeologist do if one of the reconstructions of an experimental village is accidentally burning during the night? Simple: pick up a camera and start taking pictures.
Claudia Speciale
doaj  

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

open access: yesAdvanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm   +5 more
wiley   +1 more source

The Mummification of Votive Birds: Past and Present

open access: yesEXARC Journal, 2014
A mummy is defined as a ‘well-preserved dead body’ (Cockburn, Cockburn and Reyman 1998, 1), achieved by either natural or anthropogenic methods and refers to both human and animal subjects. Mummies achieved through both these methods are found in ancient
Stephanie D. Atherton   +1 more
doaj  

Erosion and deposition in interplain channels of the Maury channel system [PDF]

open access: yes, 1981
Large turbidity currents originating on the insular margin of southern lceland have flowed clown a 2 500 km-long pathway comprising rise valleys, unchanneled plains and segments of erosional and depositional deep-sea channels that are collectively called
Hollister, C. D.   +2 more
core   +1 more source

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