Results 241 to 250 of about 105,180 (314)

Fecal Steroids as Tracers of Human Population and Waste Management Practices at the Ancient Maya City of Ucanal, Guatemala

open access: yesArchaeometry, EarlyView.
ABSTRACT Geochemical data compiled from dried sediments from three water reservoirs at the ancient Maya city of Ucanal, Petén, Guatemala, reveal low to undetectable fecal biomarker concentrations. These low concentrations may be the result of the aerobic decay of sterols combined with well‐managed waste disposal practices.
Jean D. Tremblay   +3 more
wiley   +1 more source

Edge Sharpness Does Not Vary Between Palaeolithic Flake Technologies, With the Possible Exception of Levallois Débitage

open access: yesArchaeometry, EarlyView.
ABSTRACT Investigating why hominins adopted particular flake technologies during the Mid‐to‐Late Pleistocene is essential to understanding patterns of lithic innovation. This period witnessed the emergence of Levallois technologies (~350–250 ka) and later blades, each “replacing” earlier forms.
Anna Mika, Alastair Key
wiley   +1 more source

Quantifying sorptivity using the contact sponge method: an improved calculation method validated by classical capillary rise experiments and neutron radiography. [PDF]

open access: yesMater Struct
Derluyn H   +8 more
europepmc   +1 more source

A dataset and benchmark of carbonate thin-section images for deep learning. [PDF]

open access: yesSci Data
Li K   +11 more
europepmc   +1 more source

A feasibility assessment of low-carbon concrete containing calcined clay and granite powder or dolomitic limestone in Burkina Faso. [PDF]

open access: yesSci Rep
Nshimiyimana P   +8 more
europepmc   +1 more source

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