Search results for "Geological process"

Fault role in geological processes. Repeated changing of activity mode and magnitude from basin formation to mountain belt staking: the case of the S…

2010

Xylochemical Synthesis of Cytotoxic 2-Aminophenoxazinone-Type Natural Products Through Oxidative Cross Coupling

2019

Today, the total synthesis of natural products mostly relies on the use of petroleum-based starting materials. The commercial availability of building blocks of this type often deflects attention away from lengthy synthetic routes required for the reintroduction of heteroatom substitution patterns lost in the geological process of kerogenesis. Herein, the use of wood-based starting materials, the so-called xylochemicals, for the synthesis of 2-aminophenoxazinone natural products is presented. The inherent heteroatom substitution patterns as well as chemical functionalities were employed and permitted a short and straightforward synthetic strategy. Moreover, a novel and “green” method for co…

Geoelectrical study of archaeological structures in the Himera plane (North-western Sicily)

1996

This paper presents the results obtained from a geoelectrical study carried out on the Himera plane for archaeological research. Both the tripotential method and the dipole-dipole profile method have been used on a 40 m ´ 40 m investigation area in order to obtain several resistivity maps. The latter show different geoelectrical anomalies, the shape of which allows us to interpret simple archaeological structures, consistent with current knowledge of ancient Himera sites. Furthermore, the study of the whole set of data in the resistivity domain has allowed us to infer some other characteristics from the subsequent geological process of alluvial covering of the site.