Understanding Archaeological Sites

In addition to extant residues, chromatographic analyses can be used to identify the remains of ancient human activities that are invisible to the archaeological excavator. Identification of ^-stanols, which are faecal biomarkers, in soil samples from archaeological sites have enabled identification of specific site features such as cess pits. The approach may also be used on a large scale to look at issues of waste

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Figure 3 Partial gas chromatograms obtained by analysis of the solvent-soluble portions of samples of birch bark tar (Betula pendula) (peak identities were confirmed by GC-MS and are identified in Figure 4). (A) Birch bark tar prepared from fresh bark in the laboratory (350°C); (B) mesolithic sample from Star Carr ('resin cake'); (C) mesolithic sample from Star Carr (hafting glue). Reproduced with permission from Aveling EM and Heron C (1998). Identification of birch bark tar at the mesolithic site of Star Carr. Ancient Biomolecules 2(1): 69-80. Reproduced with permission of the copyright owners OPA (Overseas Publishers Association) N.V.

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Figure 3 Partial gas chromatograms obtained by analysis of the solvent-soluble portions of samples of birch bark tar (Betula pendula) (peak identities were confirmed by GC-MS and are identified in Figure 4). (A) Birch bark tar prepared from fresh bark in the laboratory (350°C); (B) mesolithic sample from Star Carr ('resin cake'); (C) mesolithic sample from Star Carr (hafting glue). Reproduced with permission from Aveling EM and Heron C (1998). Identification of birch bark tar at the mesolithic site of Star Carr. Ancient Biomolecules 2(1): 69-80. Reproduced with permission of the copyright owners OPA (Overseas Publishers Association) N.V.

disposal and manuring patterns and early results suggest that the identification of specific sources of faecal matter may be possible.

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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