scholarly journals High-pressure meta-ophiolite boulders and cobbles from northern Italy as possible raw-material sources for “greenstone” prehistoric tools: petrography and archaeological assessment

2019 ◽  
Vol 31 (5-6) ◽  
pp. 905-917 ◽  
Author(s):  
Benjámin Váczi ◽  
György Szakmány ◽  
Elisabetta Starnini ◽  
Zsolt Kasztovszky ◽  
Zsolt Bendő ◽  
...  
Keyword(s):  
High Pressure ◽  
Northern Italy ◽  
Raw Material ◽  
Material Sources

Calculation of the Glaze Recipe for Porcelain Feldspar Products Based on their Molecular Formula Rationalization

2008 ◽  
Vol 59 (2) ◽  
pp. 129-134
Author(s):  
Ion Teoreanu ◽  
Roxana Lucia Dumitrache ◽  
Stefania Stoleriu
Keyword(s):  
Raw Materials ◽  
Computer Programs ◽  
Point Of View ◽  
Raw Material ◽  
Easy Access ◽  
Molecular Formula ◽  
Design Equation ◽  
Material Sources

Any change of the raw material sources for glazes, economically, ecologically motivated, and also from the glaze quality point of view, is conditioned by the molecular formula rationalization and by the variation limits of the molecular formula, respectively. The proper glaze compositions are placed within their limit variation intervals with optimized processing and utilization properties. For this purpose, the rationalization criteria and procedures of molecular formulas are summarized in the present paper, as well as the results referring to their rationalization obtained in the authors� previous work. Thus, one starts from a base of raw materials that are selected, usable and also accessible for the design and producing of the glazes. On these bases the groundwork and the design equation for the glaze recipes are developed, exemplified for a single glaze. For an easy access to results, computer programs are used for an easy access to results.

Colour and Directional Symbolism in Ancestral Pueblo Radial Offerings from Chaco Canyon

2021 ◽  
pp. 1-21
Author(s):  
Hannah V. Mattson
Keyword(s):  
American Southwest ◽  
Raw Material ◽  
Chaco Canyon ◽  
Assemblage Theory ◽  
Ancestral Pueblo ◽  
Landscape Features ◽  
Material Sources ◽  
Regional System ◽  
Roof Support

Dedicatory offerings of small colourful objects are often found in pre-Hispanic architectural contexts in the Ancestral Pueblo region of the American Southwest. These deposits are particularly numerous in the roof support pillars of circular ritual structures (kivas) at the site of Pueblo Bonito, Chaco Canyon, which served as the ceremonial hub of the Chacoan regional system between the tenth and twelfth centuries ce. Based on the importance of directionality and colour in traditional Pueblo worldviews, archaeologists speculate that the contents of these radial offerings may likewise reference significant Chacoan cosmographic elements. In this paper, I explore this idea by examining the distribution of colours and materials in kiva pilaster repositories in relation to directional quadrants, prominent landscape features, and raw material sources. I discuss the results in the context of Pueblo cosmology and assemblage theory, arguing that particular colours were polyvalent and relational, deriving their meanings from their positions within interacting and heterogenous assemblages.

Firing Temperatures and Raw Material Sources of Ancient Hittite Ceramics of Asia Minor

2009 ◽  
Vol 68 (1) ◽  
pp. 35-40 ◽  
Author(s):  
E. Akça ◽  
J. Arocena ◽  
G. Kelling ◽  
T. Nagano ◽  
P. Degryse ◽  
...  
Keyword(s):  
Raw Material ◽  
Asia Minor ◽  
Material Sources

scholarly journals Formulation Development and Performance Characterization of Ecological Dust Suppressant for Road Surfaces in Cities

2021 ◽  
Vol 11 (21) ◽  
pp. 10466
Author(s):  
Yuan Wang ◽  
Cuifeng Du ◽  
Mengmeng Cui
Keyword(s):  
Moisture Absorption ◽  
Environmentally Friendly ◽  
Road Dust ◽  
Raw Material ◽  
Retention Performance ◽  
Formulation Development ◽  
Performance Characterization ◽  
Material Sources ◽  
Road Surfaces

In order to solve the problem of road dust pollution, an ecological dust suppressant for road surfaces has been developed using monomer, orthogonal, and optimization experiments and based on the dust raising mechanism. A humectant, hygroscopic agent, coagulant and surfactant and their concentration ranges have been determined through monomer experiment. The preliminary formula of the dust suppressant has been obtained through orthogonal experiment, with the water loss rate, moisture content rate, viscosity value, and surface tension value serving as experimental indexes. The optimal formula for the dust suppressor has been calculated through an optimization experiment, with the toxicity, moisture absorption and retention performance of plants, and the relative damage rate of plant seeds serving as experimental indexes. Based on the performance characterization of ecological road dust suppressant, the ecologically and environmentally friendly dust suppressant demonstrates fine moisture absorption and retention performance, good wind and rain erosion resistance, and no toxicity. The ecological road dust suppressant developed herein covers extensive raw material sources. It is ecologically and environmentally friendly, fit for most urban roads, and has a fine dust suppression effect. Meanwhile, it also can bring in good economic and social benefits, demonstrating its broad application prospects.

scholarly journals Geophysical investigation of glass ‘hotspots’ in glass dumps as potential secondary raw material sources

2020 ◽  
Vol 106 ◽  
pp. 213-225 ◽  
Author(s):  
Richard Nasilele Mutafela ◽  
Etzar Gomez Lopez ◽  
Torleif Dahlin ◽  
Fabio Kaczala ◽  
Marcia Marques ◽  
...  
Keyword(s):  
Raw Material ◽  
Geophysical Investigation ◽  
Material Sources ◽  
Secondary Raw Material

Over the hills and far away: Middle to Late Woodland archaeology and toolstone conveyance at Hyre Mound (46RD1), West Virginia

2020 ◽  
pp. 019769312097631
Author(s):  
Richard L Rosencrance ◽  
Amy J Hirshman
Keyword(s):  
West Virginia ◽  
Material Culture ◽  
Late Woodland ◽  
Woodland Period ◽  
Raw Material ◽  
Burial Mound ◽  
Radiocarbon Dates ◽  
Late Woodland Period ◽  
Material Sources ◽  
Lithic Raw Material

The archaeology of the eastern West Virginia uplands remains significantly understudied compared to other areas of the Appalachian Plateau. Bettye Broyles’ excavations at the Hyre Mound site (46RD1) in 1963 recovered a variety of artifacts within and directly adjacent to a burial mound but the excavations remain largely unpublished. We provide a report of Broyles’ excavations, new radiocarbon dates, and an analysis of the lithic raw material frequencies at the site. Material culture and ceremonial practices suggest the initial mound construction dates to the Middle Woodland period. Radiocarbon dating of cultural features confirms that people also used the locality during the Late Woodland period. Lithic raw material frequencies indicate a preference for non-local, Hillsdale chert found ∼100 km from the site throughout both time periods. The directionality of toolstone conveyance supports existing models that emphasize the quality and location of raw material sources and the orientation of the region’s physiography.

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