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المزيد من المرشحاتالمزيد من المرشحاتنوع المحتوىنوع العنصرلديه النص الكاملالموضوعبلد النشرالناشرالمصدرالجمهور المستهدفالمُهدياللغةمكان النشرالمؤلفينالموقع
منجز
مرشحات
إعادة تعيين
7,766
نتائج ل
"Papyrus"
صنف حسب:
New Readings in P. Oxy. XLVIII 3372 (Herodotus I 6—9)
بواسطة
Mirończuk, Andrzej
في
Papyrus
2012
Journal Article
Graeco-Roman archives from the Fayum
The Fayum is a large depression in the western desert of Egypt, receiving its water directly from the Nile. In the early Ptolemaic period the agricultural area expanded a great deal, new villages were founded and many Greeks settled here. When villages on the outskirts were abandoned about AD 300-400, houses and cemeteries remained intact for centuries. Here were found thousands of papyri, ostraca (potsherds) and hundreds of mummy portraits, which have made the area famous among classicists and art historians alike. Most papyri and ostraca are now scattered over collections all over the world. The sixth volume of Collectanea Hellenistica presents 145 reconstructed archives originating from this region, including private, professional, official and temple archives both in Greek and in native Demotic.
Papyrus production revisited: differences between ancient and modern production modes
بواسطة
Rosado, Mario J.
,
Marques, Gisela
,
Potthast, Antje
في
Bioorganic Chemistry
,
Bleaching
,
Ceramics
2022
Papyrus, produced from the white pith of
Cyperus papyrus
L., has been used for millennia as the major writing support by ancient cultures, but there was no continuous papyrus production until modern times. Therefore, papyrus production had to be rediscovered. Modern Egyptian papyrus producers claim that their sheets possess ‘the same physical and chemical properties as ancient papyri’. To study if this is accurate, commercially available papyrus sheets were compared to ancient papyri and papyri produced according to Pliny’s historic description. Material characterization was performed with a focus on the potentially color-bearing lignin. Two-dimensional nuclear magnetic resonance spectroscopy, derivatization followed by reductive cleavage, and pyrolysis–gas chromatography/mass spectrometry were complemented with microscopy and tests for surface pH and sodium content. The lignin data in the native pith and commercial sheets were compared to 10 ancient samples from the Papyrus Museum Vienna. The analytical data clearly show the involvement of a strong alkaline treatment followed by chlorine bleaching for commercial papyri, as expressed by higher pH values, altered lignin structures, and chlorinated lignin compounds. The inclusion of an alkaline step in ancient papyrus manufacture is discussed but dismissed, since the alkali-treatment causes a huge decrease in lignin content, that was not found for the analysed ancient specimen. We assume that this additional treatment was introduced to obtain yellowish papyrus sheets meeting optical expectations of modern spectators. Linguistic and art historic evidence indicates that such a step would not have made sense in antiquity, since it was desired to produce white papyri.
Journal Article