Results 21 to 30 of about 1,047 (213)
Overview of Gemstone Resources in China
Crystals, 2021 Gemstones are minerals of gem qualities used for adornment and decoration with the attributes of beauty, durability and rarity. Traditionally, although China has been regarded as the most important source for nephrite, over the past decades, a large ...
Xiao-Yan Yu +9 more
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Microstructure Characterization of High Explosives by Wavelet Transform
Mathematical Problems in Engineering, Volume 2022, Issue 1, 2022., 2022 The key macro properties of high explosives including sensitivity to shock, the possibility of initiation, and the subsequent chemical reaction are known to be controlled by processes occurring at their microstructure level. However, there is a lack of an easy, effective, and accurate method to quantify the microstructure, termed as fabric, of high ...
Xianzhen Jia +6 more
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Crystals, 2022 Garnet has many species because of its common isomorphism. In this study, a suite of 25 natural gem-quality garnets, including pyrope, almandine, spessartine, grossular, and andradite, were examined by standard gemological testing, LA-ICP-MS, FTIR, and ...
Weiwei Li +4 more
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[Retracted] Application of VR Technology in Jewelry Display
Mathematical Problems in Engineering, Volume 2021, Issue 1, 2021., 2021 As a special symbolic cultural carrier that reflects people’s material life and spiritual state, jewelry plays an increasingly important role in life. How can we accelerate brand promotion, promote jewelry product sales, and establish a rapid market response mechanism?
Cuiling Jin, Jiapei Li, Sang-Bing Tsai
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Crystals, 2023 The chemical composition and spectra of rubies heat-treated with high temperatures (above 1200 °C) from Madagascar, Mozambique and Tanzania were analyzed by electron microprobe, LA-ICP-MS, Fourier transform infrared spectroscopy, Raman spectroscopy and ...
Ling Yang +6 more
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Complexity, Volume 2021, Issue 1, 2021., 2021 With the aggravation of population aging, home health care (HHC) services are paid more and more attention by the elderly. Previous studies aim at improving service quality and reducing cost, ignoring the coordinated and sustainable development of the economy and environment. From the perspective of sustainable development, this paper first establishes
Yan Cui +5 more
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Crystals, 2023 In this study about spessartines,13 spessartine samples with proper conditions are used for FTIR spectrum and UV-Vis spectrum tests to find the gemological characteristics and coloration mechanism.
Meilin Zhu, Ying Guo
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Applied 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.
M. Musa
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Crystals, 2021 In this paper, the pole figures plotted from X-ray diffraction data are employed to analyze the orientation of hydroxyapatite in ivory and mammoth ivory for the first time.
Xueying Sun, Mingyue He, Jinlin Wu
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Crystals, 2023 In recent years, “Jin Gao Yu” that has been traded as a kind of jade has appeared in areas of the Luonan and Shangnan counties, Shangluo City, Shaanxi Province, attracting the attention of scholars and consumers for its delicate texture and warm color ...
Liangyu Liu +6 more
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