Results 21 to 30 of about 288,546 (347)

A Non-destructive Measurement Method of Gem Jadeite Content in Jadeitite Based on Specific Gravity and X-ray Powder Diffraction

Yankuang ceshi, 2015
The key parameter to determine whether jadeitite can be named gem grade jadeitite 'jadeite jade' or not is the content (the mass fraction) of jadeite in jadeitite.
LAN Yan, LU Tai-jin, CHEN Wei-ming, LIU Yang, LIANG Rong, MA Ying, ZHANG Xiao-hu   +6 more
doaj   +1 more source

CuInS₂ Nanocrystals Embedded PMMA Composite Films: Adjustment of Polymer Molecule Weights and Application in Remote-Type White LEDs

Nanomaterials, 2023
The commercial application of colloidal semiconductor nanocrystals has been realized owing to the development of composite film technology. Here, we demonstrated the fabrication of green and red emissive CuInS2 nanocrystals embedded polymer composite ...
Qingchao Zhou, Zhongyi Shang
doaj   +1 more source

Development of a New Multi-spectral Induced Luminescence Imaging System (GV5000) and Its Application in Screening Melee-sized Near-colorless Synthetic Diamonds and Natural Diamonds

Yankuang ceshi, 2016
Natural diamonds commonly contain polymeric nitrogen and have complex growing textures, whereas synthetic diamonds do not contain nitrogen or do contain single nitrogen and have typical growing textures related to the synthetic process.
LAN Yan, LU Tai-jin, ZHANG Cong-sen, LIANG Rong, DING Ting, CHEN Hua, KE Jie, BI Li-jun   +7 more
doaj   +1 more source

Characterization of Blue Tourmaline from Madagascar for Exploring Its Color Origin

Advances in Condensed Matter Physics, 2022
In the research, spectroscopic studies of tourmaline for color origin were performed by X-ray diffraction, Fourier transform infrared spectroscopy, ultraviolet-visible spectroscopy, and X-ray photoelectron spectroscopy.
Ming Li
doaj   +1 more source

Spectroscopic Characteristics and Color Origin of Red Tourmaline from Brazil

Journal of Spectroscopy, 2022
In the present paper, I report on the spectroscopic study for tourmaline color origin, performed red samples from Minas Geras State, Brazil, by gemological routine testing, X-ray diffraction, Fourier transform infrared spectroscopy, ultraviolet-visible ...
Ming Li
doaj   +1 more source

Direct Metal Laser Sintering of Precious Metals for Jewelry Applications: Process Parameter Selection and Microstructure Analysis

IEEE Access, 2021
Direct Metal Laser Sintering (DMLS) is an advanced additive manufacturing (AM) technique for the 3D printing of metals. This technology is also beneficial in the jewelry industry, where precious metals are used, and the design and price are determinative
M. Korium, Daniel Roozbahani, M. Alizadeh, S. Perepelkina, H. Handroos   +4 more
semanticscholar   +1 more source

Spectroscopic Study on the Species and Color Differences of Gem-Quality Red Garnets from Malawi

Journal of Spectroscopy, 2022
To reveal the species of gem-grade red garnets with similar colors, especially the mechanisms underlying their subtle color differences, a series of tests, including conventional gemological tests, X-ray diffraction, Fourier-transform infrared ...
Ming Li
doaj   +1 more source

WTO Dispute Settlement: Crown Jewel or Costume Jewelry?

World Trade Review, 2022
The dispute settlement system of the World Trade Organization (WTO) knew considerable success in its early years, being described as the WTO's crown jewel. In recent years, the jewel has become tarnished.
W. Davey
semanticscholar   +1 more source

Personal HealthCare of Things: A novel paradigm and futuristic approach

CAAI Transactions on Intelligence Technology, EarlyView., 2023
Abstract This study provides an investigative approach and offers a complete review of research on Internet of Medical Things (IoMT), describing the progress in general and highlighting the research issues, trends, and future aspects of IoMT. Exploring a research strategy for IoMT systems is vital as the need for IoT in healthcare grows. By aggregating
Surbhi Gupta, Mohammad Shabaz, Ankur Gupta, Abdullah Alqahtani, Shtwai Alsubai, Isaac Ofori   +5 more
wiley   +1 more source

Investigation of Color Causing Minerals in Yellow-Red Colored Quartzite Jade Using the Synchrotron Radiation Technique

Yankuang ceshi, 2016
Jade-like cryptocrystalline-microcrystalline vein quartzite is called quartzite jade in the jewel business of China. Color is the main criteria for the value of quartzite jade, and therefore studying the coloration mechanism is very important for the ...
ZHANG Yong, ZHOU Dan-yi, CHEN Hua, LU Tai-jin, KE Jie   +4 more
doaj   +1 more source