Results 211 to 220 of about 4,649 (283)

Lead in traditional eyeliners: An investigation into use and sources of exposure in King County, Washington. [PDF]

PLOS Glob Public Health
Mokashi A, Fellows KM, Chin RJ, Whittaker SG, Simpson CD, Ceballos DM.   +5 more
europepmc   +1 more source

How investors account for the quick and the dead

The British Journal of Sociology, EarlyView.
Frederick F. Wherry
wiley   +1 more source

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A Comprehensive System for Accurate Identification of Gemstones from Corundum, Topaz, and Chrysoberyl Families Using Machine Learning Techniques

International Conference on Automation and Computing, 2023
“Gemstones, mineral stones formed through geological processes with a hardness above 7 Mohs, hold significant value in the gemstone industry” [1]. This research introduces a meticulously designed software system to address challenges in the gemstone ...
E.A.E. Kanjana Epitawatta, S. Rathnayake, Pipuni Wijesiri   +2 more
semanticscholar   +1 more source

Gemstones, Textiles and a Princess: Precious Commodities in Heliodorus’ Aethiopica

The Classical journal, 2021
:This article examines the cultural biographies of a selection of precious objects in Heliodorus’ Aethiopica, local and exotic, and shows how the transactions in which these are involved may illuminate the commodification of the heroine.
Anna Lefteratou
semanticscholar   +1 more source

Influence of low-symmetry component of crystal field on gemstones colors: Cr3+ in ruby and emerald

, 2020
The origin of difference in the colors of two gemstones – red ruby Al2O3:Cr3+ and green emerald Be3Al2(SiO3)6: Cr3+ is explained by analyzing the crystal field effects. It is shown that the stronger crystal field in ruby and the significantly greater low-
D.-W. Yang, M. Brik, A. Srivastava, Chonggeng Ma, M. Piasecki   +4 more
semanticscholar   +1 more source

Gemstones: A Model Suite for Multi-Faceted Scaling Laws

arXiv.org
Scaling laws are typically fit using a family of models with a narrow range of frozen hyperparameter choices. In this work we study scaling laws using multiple architectural shapes and hyperparameter choices, highlighting their impact on resulting ...
Sean McLeish, John Kirchenbauer, David Yu Miller, Siddharth Singh, A. Bhatele, Micah Goldblum, Ashwinee Panda, Tom Goldstein   +7 more
semanticscholar   +1 more source

Gemstones Supply Chain Management through Blockchain Mechanism

International Journal of Innovative Science & Technology
The provenance of gemstones significantly enhances their value. However, both conventional supply chain management and digital systems are susceptible to counterfeiting, loss, and theft.Blockchain has emerged as a suitable technology to store tamper ...
Talha Ahsan, Dr. Abdul Haseeb Malik, Dr Qazi Ejaz Ali, Muhammad Junaid   +3 more
semanticscholar   +1 more source

Gemstones and sustainable development: Perspectives and trends in mining, processing and trade of precious stones

The Extractive Industries and Society, 2019
Gemstones have been mined and traded since pre-history, and today represent a complex global industry which is poorly researched. The multitude of gemstone varieties and producing countries for gemstones makes any such research a challenging undertaking.
L. Cartier
semanticscholar   +1 more source

Calcium oxalate crystals, the plant "gemstones": Insights into their synthesis and physiological implications in plants.

Plant and Cell Physiology, 2023
M. Khan, Shahzad A. Pandith, M. Shah, Z. Reshi   +3 more
semanticscholar   +1 more source

The Imperial Crown of the Holy Roman Empire, Part I: Photoluminescence and Raman Spectroscopic Study of the Gemstones

The Journal of gemmology, 2023

semanticscholar   +1 more source