Search results for "coin"
showing 10 items of 612 documents
Poder Real Africano. Propaganda y legitimación de Juba I (ca. 60-46 a. C.) a través de sus emisiones helenísticas
2019
Este artículo tiene como objetivo presentar un estado de la cuestión acerca de las acuñaciones monetarias del rey númida Juba I. Históricamente nos encontramos ante la Segunda Guerra Civil Romana mantenida entre Pompeyo y Julio César (49-45 a. C.), donde Juba I apoya al «bando pompeyano». Las monedas de Juba I son producto de dicho acontecimiento y tienen su explicación en el pago de tropas contratadas. Además, las leyendas monetarias se insertan dentro de la propaganda e inciden en la posterior legitimación del trono númida, en manos de Juba I. This paper aims to present a state of the question about the coins struck by Juba I, king of Numidia. Historically we find ourselves before the Sec…
The Roman circus and southwestern city quarter of Carthage: first results of a new international research project
2018
AbstractThe paper presents first results of a joint German–Tunisian research project in Carthage, Tunisia. Archaeological fieldwork has been undertaken (preceded by a geophysical survey) in the southwestern quarter of the ancient city to study the architecture, chronology and urban context of the circus. The area has, unlike the rest of Carthage, not been targeted by excavations of the late nineteenth/early twentieth centuries and, also unlike the rest of Carthage, is mostly not overbuilt, although under pressure from neighbouring communities. The area is the last one allowing a large-scale diachronic urban study in which the circus and its impact on the quarter is in the centre. From our f…
Identity, nation‐state and football in Spain. the evolution of nationalist feelings in Spanish Football
2007
This essay shows the importance of the identity component in the development of Spanish football from its birth at the beginning of the twentieth century, when football was organized at a regional level, until the present time when football reflects the democratic and post‐national Spain created after the arrival of democracy in the last quarter of the twentieth century. The essay expounds the existence of four periods in the development of the nationalistic feelings with which Spanish football has been embodied: the pre‐national or regional period, the period of Spanish nationalization, the period of strengthening of peripheral nationalisms and the post‐national period. In order to explain…
Electrochemical Characterization of Coinage Techniques the 17(th) Century: The maravedis Case
2017
[EN] The voltammetry of immobilized particles (VIMP) methodology was applied to the discrimination of Spanish maravedis produced in 10 different mints between 1661 and 1664 using characteristic signatures for the reduction of cuprite and tenorite in the patina of the coins and catalytic effects on the hydrogen evolution reaction (HER). The variation of the apparent tenorite/cuprite ratio with depth was fitted to potential laws differing from one mint to another for A Coruna, Burgos, Cordoba, Cuenca, Granada, Madrid, Trujillo, Segovia, Sevilla and Valladolid coins. Electrochemical data permitted to detect the changes in the composition (with lowering of the silver content) and manufacturing …
Microchemical surface analysis of historic copper-based coins by the combined use of FIB-FESEM-EDX, OM, FTIR spectroscopy and solid-state electrochem…
2019
[EN] A multi-technique strategy, including microscopy, spectroscopic and electrochemical techniques, is proposed to study thin corrosion layers that form on the surface of historic copper-based coins. An accurate characterisation of this external corrosion layer is important for selecting a suitable conservation and/or restoration treatment. For this purpose, a series of copper-based coins from different historical periods and provenances, which mainly exhibited atmospheric corrosion, was analysed. The morphology of the corrosion layer and the upper core of coins was studied in trenches done on coin surfaces with a focused ion beam gun, coupled to a field emission scanning electron microsco…
Raman spectroscopy characterization of 10-cash productions from the late Chinese emperors to the Republic
2017
[EN] The use of Raman spectroscopy for discriminating monetary emissions, a recurrent problem in much archaeological studies, is described. The method involves the record of Raman signatures of tenorite and crystalline and defective cuprite in the patina based on the idea that subtle, mint-characteristic variations in the composition and metallography of the base metal during the manufacturing process are reflected in the variation in depth of the composition and crystallinity of the corrosion patina. The technique was applied to a series of 10-cash copper coins produced around the transition between the Kuang Hsu and Hsuan Tung last Chinese emperors and the first Republic whose averaged co…
Archaeometric analysis of Roman bronze coins from the Magna Mater temple using solid-state voltammetry and electrochemical impedance spectroscopy
2017
Voltammetry of microparticles (VMP) and electrochemical impedance spectroscopy (EIS) techniques, complemented by SEM-EDX and Raman spectroscopy, were applied to a set of 15 Roman bronze coins and one Tessera from the temple of Magna Mater (Rome, Italy). The archaeological site, dated back between the second half and the end of the 4th century A.D., presented a complicated stratigraphic context. Characteristic voltammetric patterns for cuprite and tenorite for sub-microsamples of the corrosion layers of the coins deposited onto graphite electrodes in contact with 0.10 M HClO4 aqueous solution yielded a grouping of the coins into three main groups. This grouping was confirmed and refined usin…
Screening of Iberian Coinage in the 2(th)-1(th) BCE Period Using the Voltammetry of Immobilized Particles
2019
[EN] The voltammetry of immobilized particles (VIMP) was applied for grouping a series of 86 Iberian coins nominally minted in the cities of Iltirta, Castulo and Obulco in the 2(th)-1(th) BCE period for which there are no chronological data. Using characteristic signatures for the reduction of cuprite, tenorite and lead corrosion products in the patina of the coins, voltammetric grouping of coins was proposed. Voltammetric data were found to be consistent with textural and compositional properties of the surface and subsurface of selected coins using FIB-FESEM-EDX. The obtained data confirmed a clear separation between the productions of Iltirta on one side, and those of Castulo and Obulco …
VegItaly: Technical features, crucial issues and some solutions
2012
VegItaly is at present the largest Italian vegetation database. It is the result of a collaborative project aspiring to represent a major reference for the Italian vegetation scientists. The paper emphasizes its benefits for phytosociological data management and describes the solutions adopted to solve several technical problems, like the treatment of different vegetation stratification systems, the conversion of vegetation cover values, taxonomic and syntaxonomic issues, data import and access. The structure of the taxonomic list produced to support the storing of data is described. It allows an easy management of synonymic relationships and is constantly updated according to new publicati…
Benzothiazolethione complexes of coinage metals: from mononuclear complexes to clusters and polymers
2019
Abstract The reactions of 2(3H)-benzothiazolethione (Hbtt) with [AuCl(tetrahydrothiophene)] and CuBr2 were studied, and found to yield a tetranuclear cluster compound [Au(btt)]4 [1] and a polymeric structure [CuBr(btt-btt)]n.nTHF (2). Crystallographic and spectroscopic methods were used for the characterization. In 1, the monoanionic ligand acted as a bidentate bridging N,S-donor giving a molecular cluster structure of an asymmetric coordination isomer. In the formation of 2, the ligand was dimerized by forming a S–S bond after deprotonation, and coordination via nitrogen donors to metal atoms took place leading to a polymeric structure. To clarify the diversity of reactions of Hbtt with co…