scholarly journals Functional Study of an Archaeological Tool of Mammoth Ivory with Four Spiral Holes

2021 ◽  
Vol 29 ◽  
Author(s):  
Toomaï Boucherat
Keyword(s):  
Upper Paleolithic ◽  
Functional Study

In an archaeological experiment, the hypothesis was tested whether the replica of a perforated bâton percé with four spiral holes made from mammoth ivory, which was excavated in 2015 at Hohle Fels Cave in Schelklingen, is suitable for making ropes. For this purpose, the author has experimentally carved the object with tools based on corresponding devices from the Upper Paleolithic. Leather cords were used to make the rope, which were fed through the four holes as a bundle of fibers. The four strands were twisted individually and finally twisted into a four-strand rope. At least six participants are required to successfully conduct the experiment. As a result, it is shown that rope production is possible using the bâton percé.

scholarly journals Scraping hide in the early Upper Paleolithic: Insights into the life and function of the Protoaurignacian endscrapers at Fumane Cave

2021 ◽  
Vol 13 (8) ◽  
Author(s):  
Alessandro Aleo ◽  
Rossella Duches ◽  
Armando Falcucci ◽  
Veerle Rots ◽  
Marco Peresani
Keyword(s):  
Morphological Variability ◽  
Upper Paleolithic ◽  
Functional Study ◽  
Transverse Motion ◽  
Middle Paleolithic ◽  
Paleolithic Site ◽  
Time Investment ◽  
Use Wear ◽  
Early Upper Paleolithic ◽  
Early Upper

AbstractEndscrapers are specialized tools that are usually recovered in great quantities in every Upper Paleolithic site in Europe. Although they make their first ephemeral appearance in the Middle–late Middle Paleolithic transitional technocomplexes, endscrapers commonly appear in toolkits from initial and early Upper Paleolithic traditions onwards. Nevertheless, endscrapers and, in general, domestic tools have attracted relatively little attention in debates revolving around the significance of technological change, tool function, and tool specialization after the end of the Middle Paleolithic. With the aim to overcome this paucity of information, here, we present the results of a techno-functional study performed on the large endscraper assemblage recovered from the early and late Protoaurignacian layers at Fumane Cave in northeastern Italy. We analyzed these artifacts using technological, morpho-metrical, typological, and functional approaches. Despite the large morphological variability, use-wear traces reveal functional consistency and high levels of specialization for these tools. Almost all the use-wear traces we recorded developed from hide working with transverse motion. Moreover, we find no evidence that endscrapers were involved in the production of bone and antler tools during the late Protoaurignacian. Macroscopic and microscopic wear on the lateral edges of tools point to a considerable number of hafted endscrapers, which implies systematic time investment and planning depth. Comparison with the few endscrapers from transitional industries that have been analyzed highlights marked differences in the production, morphology, and use of these tools and reinforces our view of the Aurignacian as a complex not directly related with preceding European traditions.

Acquired Haemophilia: Functional Study of Antibodies to Factor VIII

1981 ◽  
Vol 45 (03) ◽  
pp. 285-289 ◽  
Author(s):  
J P Allain ◽  
A Gaillandre ◽  
D Frommel
Keyword(s):  
Factor Viii ◽  
Functional Study ◽  
Factor Viii Inhibitor ◽  
Acquired Haemophilia ◽  
Viii Inhibitor ◽  
Kinetics Of ◽  
Antibody Function ◽  
Native Plasma

SummaryFactor VIII complex and its interaction with antibodies to factor VIII have been studied in 17 non-haemophilic patients with factor VIII inhibitor. Low VIII:C and high VIIIR.Ag levels were found in all patients. VIII:WF levels were 50% of those of VTIIRrAg, possibly related to an increase of poorly aggregated and electrophoretically fast moving VIIIR:Ag oligomers.Antibody function has been characterized by kinetics of VIII :C inactivation, saturability by normal plasma and the slope of the affinity curve. Two major patterns were observed:1) Antibodies from 6 patients behaved similarly to those from haemophiliacs by showing second order inhibition kinetics, easy saturability and steep affinity slope (> 1).2) Antibodies from other patients, usually with lower titres, inactivated VIII :C according to complex order kinetics, were not saturable, and had a less steep affinity slope (< 0.7). In native plasma, or after mixing with factor VIII concentrate, antibodies of the second group did not form immune complexes with the whole factor VIII molecular complex. However, dissociation procedures did release some antibodies from apparently low molecular weight complexes formed in vivo or in vitro. For appropriate management of non-haemophilic patients with factor VIII inhibitor, it is important to determine the functional properties of their antibodies to factor VIII.

Unearthing Houses in Porphyreon and Chhim. Structure, Spatial Development, and Decoration of Domestic Spaces in Late Antique Phoenicia

2020 ◽  
pp. 173-195
Author(s):  
Tomasz Waliszewski ◽  
Julia Burdajewicz
Keyword(s):  
Social Structure ◽  
Late Antiquity ◽  
Research Team ◽  
Wall Painting ◽  
Domestic Architecture ◽  
Functional Study ◽  
Late Antique ◽  
Rural Settlements ◽  
Domestic Spaces ◽  
Residential Architecture

Porphyreon (Jiyeh/Nebi Younis) and Chhim were large rural settlements situated on the coast of modernday Lebanon, north of the Phoenician city of Sidon. As attested by the remains of residential architecture, they were thriving during the Roman Period and late Antiquity (1st–7th centuries AD). This article presents the preliminary observations on the domestic architecture uncovered at both sites, their spatial and social structure, as well as their furnishing and decoration, based on the fieldwork carried out in recent years by the joint PolishLebanese research team. The focus will be put on the wall painting fragments found in considerable numbers in Porphyreon. The iconographical and functional study of the paintings betrays to what extent the inhabitants of rural settlements in the coastal zone of the Levant were inclined to imitate the decoration of the urban houses known to them from the nearby towns, such as Berytus, but also from religious contexts represented by churches.

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