Results 1 to 10 of about 19,618 (258)

Investigation of Factors Affecting the Color of Serpentine Jade from Shandong, China

open access: yesCrystals, 2023
The color of serpentine jade is affected not only by the chemical composition, but also by some external factors. In this research, we quantitatively analyzed the color of serpentine jade and the influence of light sources, backgrounds, and thickness on ...
Ying Guo
exaly   +3 more sources

Experimental Modeling of Large Diameter Holes Based on Materials of Bronze Age Stone Axes

open access: yesПоволжская археология, 2021
In the Urals, there are more than a hundred products with large-diameter holes, some of which are made using a copper tube. Experiments on hollow drilling in the expedition of S. A. Semenov have shown great complexity of this method.
Serikov Yuri B., Grekhov Sergey V.
doaj   +1 more source

Muyrakyta ou muiraquita: um talismã arqueológico em jade procedente da amazônia: aspectos físicos, mineralogia, composição química e sua importância etnogeológica [PDF]

open access: yesActa Amazonica, 2002
Os muiraquitãs são artefatos líticos com formas batraquianas confeccionados principalmente em pedra verde, tipo jade, utilizados pelos povos Tapajó/Santarém e Conduri do Baixo Amazonas, dizimados pelos colonizadores europeus.
Marcondes Lima da COSTA   +4 more
doaj   +1 more source

Jade and Guanxi in China

open access: yesThe Copenhagen Journal of Asian Studies, 2022
This article discusses how the gemstone jade mediates guanxi (‘personal relationships’), and how guanxi mediates jade trade in China. Outlining some affective, spiritual, moral and somatic meanings and efficacies of jade, especially as a gift, the ...
Henrik Kloppenborg Møller
doaj   +1 more source

3D Printed PCB Microfluidics

open access: yesMicromachines, 2022
The combination of printed circuit boards (PCB) and microfluidics has many advantages. The combination of electrodes, sensors and electronics is needed for almost all microfluidic systems.
Stefan Gassmann   +4 more
doaj   +1 more source

Location characteristics of tremolite jade from Dahua, Guangxi

open access: yes地质科技通报, 2021
The tremolite jade found in Dahua County, Guangxi Province, is a new type of tremolite jade that has only appeared in the past two years with a low degree of research. But the jade in this production area occupies a large share in the market.
Zuowei Yin, Wenwei Wang, Qingchao Zhou
doaj   +1 more source

The first greenstone axe in Hungary

open access: yesMateriale și Cercetări Arheologice, 2021
Greenstone (typically, metamorphic rocks of distinctive green colour) axes were in high esteem during Prehistory. They had special prestige and were obtained from great distances.
Biró, K.   +5 more
doaj   +1 more source

The Importance of Multidisciplinary Analytical Strategies to Solve Identification and Characterization Challenges in Gemology: The Example of the “Green Stones”

open access: yesApplied Sciences, 2022
The present review aims to discuss the importance of a multidisciplinary approach in cultural heritage and archaeometry investigations. The analytical methods used to identify and characterize “Green Stones” are discussed as an example.
Maya Musa
doaj   +1 more source

Jade, or, porcelaine...

open access: yes, 2021
Cet ouvrage collectif s’intéresse à la perception et aux représentations des objets précieux dans le monde chinois d’hier  et d’aujourd’hui, et plus particulièrement au rôle endossé par ces objets au niveau culturel et historique. Différents domaines sont abordés : la littérature, l’Histoire, l’anthropologie, la sociologie, l’Histoire de l’art ...
Ma, Jun Félix, Cruveille, Solange
openaire   +1 more source

Analysis of Crystallinity and Physical Properties of the Bio-solar Gemstone

open access: yesAceh International Journal of Science and Technology, 2020
– Bio-solar is one of the natural gemstones found in the province of Aceh in Indonesia. A recent study suggested that this gemstone could be considered as a vesuvianite type of gemstone.
Ismail Ismail   +3 more
doaj   +1 more source

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