Results 221 to 230 of about 55,207 (265)

Wood Charcoal Analysis in Archaeology

2018
This chapter examines historical and recent methodological developments in the field of wood charcoal analysis (anthracology). A key aim is to outline various approaches to research questions relating to the reconstruction of past vegetation cover, fuel wood use practices and palaeoecology.
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Charcoal Sampling Tubes for Organic Vapor Analysis by Gas Chromatography

American Industrial Hygiene Association Journal, 1966
Abstract Variation in efficiency of recovery of organic vapors collected on activated charcoal and desorbed into carbon disulfide, was studied with respect to certain parameters of the process. Chemicals used were methylethyl ketone, toluene, trichloroethylene, butyl acetate, 2-methylcyclobexanol, and styrene.
C L, Fraust, E R, Hermann
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Archaeobotanical and charcoal analysis

2022
Mary Dillon, Ingelise Stuijts
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QUALITATIVE PHYTOCHEMICAL ANALYSIS OF INDIAN CHARCOAL-TREE

The qualitative phytochemical screening of Trema orientale (L.) Blume (Indian Charcoal-Tree) was carried out using aqueous extract of different plant parts (leaves, stem, and fruits). The results showed diverse secondary metabolites like tannin, flavonoids, phenolic compounds, reducing sugar, alkaloids etc.
VALIGATLA, DEEPTHI, ALAM, SK SAHANAWAZ, SHAW, RANJAN, JENA, NIBEDITA, KUMAR, SANJEET   +4 more
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Charcoal Analysis for Paleoenvironmental Interpretation: A Chemical Assay

Quaternary Research, 1985
A nitric acid digestion and ignition technique developed to measure relative frequencies of charcoal in lake and bog sediments measures the weight of charcoal relative to the dry weight of the sample (percentage charcoal) and gives results comparable to counting of microscopic charcoal.
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Charcoal recognition, taphonomy and uses in palaeoenvironmental analysis

Palaeogeography, Palaeoclimatology, Palaeoecology, 2010
Abstract Charcoal, predominantly the product of wildfires, is abundant in many sedimentary rocks deposited in a wide range of environments, from terrestrial to marine. It also occurs in some volcanic rocks. This paper outlines aspects of charcoal formation (both natural and experimental) and briefly considers the taphonomic processes leading to a ...
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Fracture analysis of subsize, charcoal granite specimens

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1985
J.F. Labuz, S.P. Shah, C.H. Dowding
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188. EDX analysis of whetlerized charcoal microareas

Carbon, 1984
Rosemarie Szostak, Alvin H. Weiss, Albert Sacco   +2 more
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Activated charcoal-based dentifrices: Spectroscopy and Thermal analysis

Medical Research Archives
Different types of dentifrices with the whitening proposal have been launched in the market. However, often the characteristics disclosed by the manufacturers are not compatible with the reality of the products. Objectives: To characterize activated charcoal-based dentifrices using infrared spectroscopy and thermal analysis, thermogravimetric analysis ...
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Charcoal analysis: wood exploitation and fire

La cueva de Tafortalt (Marruecos) marca un hito en la investigación sobre la prehistoria del norte de África y, en particular, sobre los análisis paleobotánicos pioneros desde mediados del siglo XX. No obstante, los datos paleoambientales disponibles para la región son aún escasos.
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