scholarly journals Vác 1 Epigravettian loci at the Danube Bend in North-Central Hungary

2021 ◽  
pp. 29-46
Author(s):  
Sándor Béres ◽  
Yuri E. Demidenko
Keyword(s):  
Central Europe ◽  
Raw Material ◽  
Secondary Treatment ◽  
North Central ◽  
Chaine Operatoire ◽  
Lithic Assemblage ◽  
Treatment Processes ◽  
Lithic Artifact ◽  
Base Camp ◽  
Lithic Artifacts

In the article, the Vác 1 loci (Danube Bend area in North-Central Hungary) and its surface lithic artifacts systematically collected over the last 20 years have been analyzed. The loci and lithic artifact chaîne opératoire analyses showed that the site served as a hunter-gatherer temporary camp with some base camp characteristics and some similar with lithic artifact primary and secondary treatment processes adding to one another for both rather local and distant raw material types (RMTs). Furthermore, the lithic assemblage data indicate an Early Epigravettian industrial attribution. Likewise, some assemblages’ techno-typological data certainly augment some of the more peculiar features for the already known Early Epigravettian variability in the Eastern Central Europe.

scholarly journals Design theory analysis of biface technology at the Botanie Lake Dam site (EcRj 15), south-central British Columbia

2009 ◽  
Vol 21 (1) ◽  
Author(s):  
Paul Ewonus
Keyword(s):  
British Columbia ◽  
Design Theory ◽  
Small Sample ◽  
Raw Material ◽  
Contact Period ◽  
Contact Materials ◽  
Lithic Assemblage ◽  
South Central ◽  
Dam Site ◽  
Lithic Artifacts

Editor’s note: This article appears as a reprint from Volume 18 due to printing errors. Nexus apologizes to the author for the delay in publishing the work in its entirety. A design analysis is applied to six bifacial tools recovered from the Botanie Lake Dam site (EcRj 15) on the Plateau of southern British Columbia. While these artifacts, selected from the lithic assemblage of this late pre-contact period mat lodge campsite, show some internal variation, they share important characteristics indicative of their use by Plateau peoples. Acute edge angles and less durable raw material suggests that these bifacial tools were used to cut relatively soft contact materials such as herbaceous plants. Their lengthy use lives and multifunctionality make them effective solutions for the requirements of plant and animal processing during a mobile seasonal round. This application of design theory to a small sample of lithic artifacts from a seasonal camp site with an hypothesized focus on root resource harvesting and processing adds to the growing number of studies employing this approach to lithic analysis.

scholarly journals Design Theory Analysis of Biface Technology at the Botanie Lake Dam Site (EcRj 15), South-Central British Columbia

2005 ◽  
Vol 18 (1) ◽  
Author(s):  
Paul Ewonus
Keyword(s):  
British Columbia ◽  
Design Theory ◽  
Small Sample ◽  
Raw Material ◽  
Contact Period ◽  
Contact Materials ◽  
Lithic Assemblage ◽  
South Central ◽  
Dam Site ◽  
Lithic Artifacts

A design analysis is applied to six bifacial tools recovered from the Botanie Lake Dam site (EcRj 15) on the Plateau of southern British Columbia. While these artifacts, selected from the lithic assemblage of this late pre-contact period mat lodge campsite, show some internal variation, they share important characteristics indicative of their use by Plateau peoples. Acute edge angles and less durable raw material suggests that these bifacial tools were used to cut relatively soft contact materials such as herbaceous plants. Their lengthy use lives and multifunctionality make them effective solutions for the requirements of plant and animal processing during a mobile seasonal round. This application of design theory to a small sample of lithic artifacts from a seasonal camp site with an hypothesized focus on root resource harvesting and processing adds to the growing number of studies employing this approach to lithic analysis.

scholarly journals Effect of Biochar Prepared from Food Waste through Different Thermal Treatment Processes on Crop Growth

Processes ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 276
Author(s):  
Hang Jia ◽  
Haoxi Ben ◽  
Fengze Wu
Keyword(s):  
Crop Growth ◽  
Raw Material ◽  
Synthetic Methods ◽  
Thermochemical Conversion ◽  
Growth Trend ◽  
Wheat Growth ◽  
Preparation Methods ◽  
Treatment Processes ◽  
Ft Ir ◽  
The Impact

Biochar is generally accepted and increasingly valued in scientific circles as solid products in the thermochemical conversion of biomass, mainly because of its rich carbon content. The purpose of this research is to investigate the impact of biochar from different sources on wheat growth. In particular, this work focused on the effect of different preparation methods and raw material of biochar on the growth of wheat and aim to find a potential soil substitute that can be used for crop cultivation. Two synthetic methods were evaluated: hydrothermal conversion and pyrolysis. The characterization of biochar was determined to explore the impact of its microstructure on wheat growth. The results show that the yield of biochar produced from high-pressure reactor is significantly higher than that obtained by using microwave reactor. For example, the biochar yield obtained through the former is about six times that of the latter when using steamed bread cooked as biomass raw material. In addition, the growth trend of wheat indicates that biochar has different promoting effects on the growth of wheat in its weight and height. The pyrolyzed carbon is more suitable for wheat growth and is even more effective than soil, indicating that pyrolyzed biochar has more potential to be an alternative soil in the future. Moreover, this research tries to explore the reasons that affect crop growth by characterizing biochar (including scanning electron microscopy (SEM), biofilm electrostatic test (BET) and Fourier transform infrared (FT-IR)). The results indicate that the biochar containing more pits and less hydroxyl functional are more suitable for storing moisture, which is one of the significant factors in the growth of crops. This study provides evidence of the effects of biochar on crop growth, both in terms of microstructure and macroscopic growth trends, which provides significant benefits for biochar to grow crops or plants.

The Glueckstadt Graben, a sedimentary record between the North and Baltic Sea in north Central Europe

2005 ◽  
Vol 397 (1-2) ◽  
pp. 113-126 ◽  
Author(s):  
Yuriy Maystrenko ◽  
Ulf Bayer ◽  
Magdalena Scheck-Wenderoth
Keyword(s):  
Baltic Sea ◽  
Central Europe ◽  
Sedimentary Record ◽  
North Central ◽  
The North ◽  
North Central Europe

Contacts between the Late Roman Empire and North-Central Europe

1996 ◽  
Vol 76 ◽  
pp. 31-50 ◽  
Author(s):  
Aleksander Bursche
Keyword(s):  
Roman Empire ◽  
Central Europe ◽  
The Baltic Sea ◽  
European Continent ◽  
North Central ◽  
The Past ◽  
Vistula River ◽  
English Speaking ◽  
English Speaking World ◽  
The Baltic

The concept of Central Europe is understood here to cover the geographical centre of the European continent (i.e. the territory between the Elbe, Bug and Neman rivers, that is, eastern Germany, Poland, Bohemia, Slovakia and Lithuania), formerly treated in much of the English-speaking world as ‘Eastern Europe’. In the past six years, however, this area has been moving closer to the West. This paper shall concentrate on the region north of the Carpathian mountains, particularly the Vistula river-basin and Scandinavia (without Norway), in other words the territory round the Baltic Sea.

Kinetics of Cellular Structure Formation at Thermal Treatment Processes Simulation in the Cellular Glass Technology

2018 ◽  
Vol 931 ◽  
pp. 628-633 ◽  
Author(s):  
Sergey V. Fedosov ◽  
Maxim O. Bakanov ◽  
Sergey N. Nikishov
Keyword(s):  
Thermal Processing ◽  
Cell Formation ◽  
Glass Production ◽  
Raw Material ◽  
Thermal Processes ◽  
Physical Processes ◽  
Glass Technology ◽  
Treatment Processes ◽  
Cellular Glass ◽  
Kinetics Of

The work considers mathematical models describing thermal processes in the framework of thermal processing of raw material mixture for cellular glass sponging. It is shown that the existing models do not completely reflect the physical processes occurring in the technology of cellular glass production. It is noted that kinetics of cell formation in cellular glass is a promising trend for improving the cellular glass technology.

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