Aztec Obsidian Industries [PDF]
, 2016 Obsidian was the primary lithic or stone material used for cutting activities in Aztec society, including domestic food production, craft production, hunting, warfare, and ritual. The demands of millions of consumers within and outside of the Aztec Empire shaped a diversity of industries and distribution networks that operated through merchants ...
Pastrana, Alejandro, Carballo, David M.
openaire +4 more sources
Assessing Groundwater Potential in the Ziway Lake Watershed Using Geographical Information System, Analytic Hierarchy Process, and Drinking Water Quality Index. [PDF]
Glob ChallThis study identifies groundwater potential zones in Ethiopia’s Ziway Lake watershed using GIS and the SWAT model. Over half the area shows moderate to very high potential. Nearly 40% of high‐potential zones also have good to excellent water quality. The results offer a practical tool for sustainable groundwater management, with potential application ...
Takele T, Mechal A, Berhe BA.
europepmc +2 more sources
THE ORIGIN OF COLOR IN "FIRE" OBSIDIAN [PDF]
The Canadian Mineralogist, 2007 A variety of obsidian from Glass Buttes, Oregon, known as “fire” obsidian and named for thin layers showing various colors, was investigated with field-emission scanning electron microscopy, X-ray energy-dispersive spectroscopy, electron back-scatter diffraction, and optical spectroscopy methods. Our study reveals that the thin layers mainly consist of
Chi Ma, George R. Rossman, J. A. Miller
openalex +6 more sources
The origin and bloating of the obsidian [PDF]
E3S Web of Conferences, 2020 Among the rocks used to produce heat-insulating and acoustic building materials, volcanic water-containing glassy rocks are increasingly being used. A feature of volcanic water-containing glasses is their ability to expand during heat treatment. Besides perlite, other volcanic glasses known by various names also have this special feature: obsidian ...
Artsruni Safaryan +3 more
openalex +4 more sources
Carbonic anhydrase 2-derived drug-responsive domain regulates membrane-bound cytokine expression and function in engineered T cells [PDF]
Communications BiologyAdoptive cell therapies (ACT) have shown reduced efficacy against solid tumor malignancies compared to hematologic malignancies, partly due to the immunosuppressive nature of the tumor microenvironment (TME). ACT efficacy may be enhanced with pleiotropic
Mara C. Inniss +17 more
doaj +2 more sources
Mid-Holocene Social Interaction in Melanesia: New Evidence from Hammer-Dressed Obsidian Stemmed Tools [PDF]
, 2009 The widespread distribution in Papua New Guinea of obsidian stemmed tools dated to the mid-Holocene has led scholars to postulate the existence of large interaction spheres. A newly reported artifact from Biak Island, West Papua provides the stimulus for
Robin Torrence +5 more
openalex +4 more sources
Long-term efficacy and safety of mitapivat in non-transfusion-dependent α- or β-thalassaemia: An open-label phase 2 study. [PDF]
Br J HaematolMitapivat is an oral activator of pyruvate kinase (PK), the enzyme responsible for the final step in glycolysis, and increases production of adenosine triphosphate (ATP), which may lead to improvements in red blood cell health, ineffective erythropoiesis and haemolysis.
Kuo KHM +9 more
europepmc +2 more sources
Analysis by pXRF of Prehistoric Obsidian Artifacts From Several Sites on Ustica (Italy): Long-Distance Open-Water Distribution From Multiple Island Sources During the Neolithic and Bronze Ages [PDF]
Open Archaeology, 2020 The small island of Ustica was a regular part of the obsidian distribution network in the central Mediterranean, despite its location more than 50 km north of western Sicily.
Tykot Robert H., Martin Franco Foresta
doaj +2 more sources
Circulación, intercambio y uso de obsidianas en la costa de la provincia del Chubut (Patagonia argentina), durante el Holoceno tardío [PDF]
Intersecciones en Antropología, 2005 Se presentan los resultados de un nuevo análisis de elementos traza en 26 artefactos de 19 sitios arqueológicos de la costa de la provincia del Chubut. Dieciocho sitios son del sector norte, entre las desembocaduras del Arroyo Verde y del río Chubut y el
Julieta Gómez Otero, Charles R. Stern
doaj +3 more sources