Results 1 to 10 of about 7,191 (119)
Известия высших учебных заведений: Геология и разведка, 2018 Sengilite is a trade mark of florogenic jewelry and ornamental material being mined around the village Sengilei of the Ulyanovsk region. The sangilite is a lithofected marine plant remains cemented in marl.
D. A. PETROCHENKOV
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CONCRETIONS WITH FOSSILS OF THE ULYANOVSK REGION - A NEW KIND OF JEWELRY-ORNAMENTAL RAW MATERIALS
Известия высших учебных заведений: Геология и разведка, 2018 Concretions with fossils of the Ulyanovsk region are a new kind of jewelry and ornamental raw materials. Concretions are located in the middle part of the section of the Hauterivian sediments, which formed by dark gray dense clays. Concretions are dense,
D. A. Petrochenkov
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About the monograph “Collection and jewelry cassiterite”
Известия высших учебных заведений: Геология и разведка, 2021 Specialists of the Sergo Ordzhonikidze Russian State University for Geological Prospecting (MGRI), which had been training gemologists for many years, conducted an interesting and substantial study devoted to a non-traditional use of cassiterite, a ...
S. V. Belov
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Известия высших учебных заведений: Геология и разведка, 2019 For the first time, data on the mineral composition and gemological characteristics of the jewelry-ornamental ammonites of the Republic of Adygea have been presented.
D. A. Petrochenkov
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Известия высших учебных заведений: Геология и разведка, 2018 Fossils of marine reptiles are a new jewelry and ornamental material and collected in the Ulyanovsk region from the Upper Jurassic deposits. They consist of (wt. %): calcite — 52, apatite — 24 and pyrite — 23, and also gypsum presents.
D. A. Petrochenkov
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The influence of surface finishing methods on touch-sensitive reactions [PDF]
, 2017 This paper describes the modern technological development trends in jewelry design. In the jewelry industry, new trends, associated with the introduction of updated non-traditional materials and finishing techniques, are appearing.
Bouchard, C. +4 more
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Mineral composition and gemological characteristics of the petrified wood of the Ulyanovsk region
Известия высших учебных заведений: Геология и разведка, 2019 For the first time, the mineral composition and gemological characteristics of the petrified wood from the Ulyanovsk region, of jewelry and ornamental quality, have been studied.
D. A. Petrochenkov
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Aztec obsidian industries [PDF]
, 2016 Obsidian was the primary lithic or stone material used for cutting activities in Aztec society, including domestic food production, craft production, hunting, warfare, and ritual.
Carballo, David M., Pastrana, Alejandro
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State College Times, November 25, 1931 [PDF]
, 1931 Volume 20, Issue 14https://scholarworks.sjsu.edu/spartan_daily_1931/1013/thumbnail ...
San Jose State University, School of Journalism and Mass Communications
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The potential of additive manufacturing in the smart factory industrial 4.0: A review [PDF]
, 2019 Additive manufacturing (AM) or three-dimensional (3D) printing has introduced a novel production method in design, manufacturing, and distribution to end-users.
Dehghanghadikolaei, Amir +5 more
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