scholarly journals La explotación de esmeraldas en el Egipto romano. Primeros resultados del Sikait Project

2019 ◽  
pp. 283-303
Author(s):  
Joan Oller Guzmán ◽  
◽  
David Fernández Abella ◽  
Vanesa Trevín Pita ◽  
Orio l Achón Casas ◽  
...  
Keyword(s):  
Research Effort ◽  
Eastern Desert ◽  
Roman Period ◽  
Archaeological Research ◽  
Trade Network ◽  
Initial Results

This paper presents initial results of the Sikait Project, an archaeological research effort focused on the study of the Mons Smaragdus area (in the Egyptian Eastern Desert) dedicated to beryl/emerald mining in the Roman period. Archaeological fieldwork at Sikait in winter 2018 furthered knowledge about the exploitation of beryl and the trade network that it created in Roman times

New evidence of metallurgical production during the Ptolemaic period in the ancient harbor of Berenike (Eastern Desert) in Egypt

2020 ◽  
Author(s):  
Joan Oller Guzmán
Keyword(s):  
Eastern Desert ◽  
Roman Period ◽  
Special Focus ◽  
Hellenistic Period ◽  
Metallurgical Furnace ◽  
Metallurgical Production ◽  
First Results ◽  
Southwestern Area ◽  
Productive Structure ◽  
New Evidence

This paper tries to explain the first results obtained on trench 102, located on the southwestern area of the ancient harbour of Berenike. Chronologically the trench runs from the Late Hellenistic to Roman Period, showing different uses of this area during Antiquity. Some of the data recovered are quite interesting in order to understand the evolution of this scarcely known area of Berenike’s harbor. The identification of a metallurgical furnace related to the Late Hellenistic Period is especially remarkable, as it provides some insights about the structure of this zone under the last Ptolemaic rulers. So, the main objective of the paper is to offer new data about the productive structure of this site during the Ptolemaic period with special focus on the metallurgical production.

Wyroby ze szkła i fajansu egipskiego

2020 ◽  
pp. 107-119
Author(s):  
Sylwia Wajda ◽  
Beata Marciniak-Maliszewska
Keyword(s):  
Glass Bead ◽  
Glass Production ◽  
Roman Period ◽  
Chemical Compositions ◽  
Archaeological Research ◽  
Glass Making ◽  
Epma Analysis ◽  
Halophytic Plants

During archaeological research in the cremation cemetery in Żelazna Nowa, 106 glass and four faience artefacts were uncovered. Most of them were found in eleven cremation burials (1, 2, 19A, 33, 34, vicinity of 36, 37, 39, 44, 47, 54) dated between the 1st and 3rd centuries AD. The glass pieces are highly fragmented, melted, or fused with other elements of the pyre, with only one glass bead completely preserved (type 218c acc. to Tempelmann-Mączyńska). The faience objects have survived in better shape: these are two complete beads and two fragments, all representing type 171 (acc. to Tempelmann-Mączyńska). Chemical compositions of 12 glass pieces and one fragment of a faience bead were determined using EPMA analysis. All the analysed artefacts turned out to be sodium glasses, made using both mineral sodium (natron) and sodium from the ash of halophytic plants (one sample). Natron glasses represent three groups distinguished by varying contents of MgO and K2O. The differences in concentrations of these components indicate that sands from different deposits were added in the glass-making process. This corroborates a hypothesis positing multiple centres of glass production during the Roman Period.

Flutter of Mistuned Bladed Disks and Blisks With Aerodynamic and FMM Structural Coupling

2004 ◽  
Author(s):  
Robert E. Kielb ◽  
Drew M. Feiner ◽  
Jerry H. Griffin ◽  
Tomokazu Miyakozawa
Keyword(s):  
Beneficial Effect ◽  
Computational Fluid Dynamic ◽  
Research Effort ◽  
Fluid Dynamic ◽  
Coupling Model ◽  
Extended Model ◽  
Coupling Coefficients ◽  
Structural Coupling ◽  
Bladed Disk ◽  
Initial Results

This paper presents the initial results from a research effort on blisk and bladed disk mistuning including both structural and aerodynamic coupling. The structural coupling model is based on the Fundamental Mistuning Model (FMM, developed by Feiner & Griffin). This effort extends the FMM technique to accept the aerodynamic coupling coefficients from computational fluid dynamic (CFD) codes. The extended model is applied to a representative engine case. The model and initial studies to identify flutter sensitivities to random and near alternate mistuning are presented. Comparisons are given of tuned and mistuned flutter for only aerodynamic coupling, and with both aerodynamic and structural coupling. For the case studied herein the beneficial effect of mistuning on flutter predicted by aerodynamic coupling models is shown to be greatly inhibited by the inclusion of the structural coupling effects.

scholarly journals Operating and defending Red Sea harbors and Eastern Desert trails in the Hellenistic and early Roman periods: the case of Berenike

2019 ◽  
pp. 389-409
Author(s):  
Marek Adam Woźniak
Keyword(s):  
Red Sea ◽  
Road Network ◽  
Eastern Desert ◽  
Hellenistic Period ◽  
Archaeological Research ◽  
Middle Kingdom ◽  
Old Kingdom ◽  
Gold Mines ◽  
Desert Region ◽  
Equal Importance

The Hellenistic road network in the Eastern Desert and Red Sea coast of Egypt has been at the nexus of important archaeological research on several sites in the region in the second half of the 20th century. The work was focused at first on the Roman remains of this network, but with time it became evident that the Romans had made use of a system developed in Hellenistic and even earlier, Pharaonic times. French and Italian investigations at Marsa Gawasis, Gebel Zeit and Wadi al-Jarf contributed data on the marine expeditions of Old Kingdom rulers into the Sinai and Middle Kingdom rulers to the Land of Punt. Key information for the Hellenistic period came from the French exploration of gold mines and fortified features at Samut and the fort at Abbad. Of equal importance was the work of a Dutch–American and then Polish–American team at the Hellenistic and Roman coastal harbor of Berenike Trogodytica. This work uncovered remains of a Hellenistic port-base in the Eastern Desert region of Egypt, giving grounds for broadening a general understanding of the daily functioning, logistics, and functional interdependence of the Hellenistic road network in the region, which enabled in turn a comparison with the Roman counterpart. The present paper considers the functioning of this system based on the author’s work in Berenike.

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