Results 11 to 20 of about 32,277 (235)

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

open access: yesNanomaterials, 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

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

open access: yesYankuang 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   +6 more
doaj   +1 more source

Jewelry collection of I.V. Savitsky State Museum of Arts of the Republic of Karakalpakstan

open access: yesИсторическая этнология, 2023
This article provides information about the jewelry of the Karakalpak people in the collection of I.V. Savitsky State Museum of Arts of the Republic of Karakalpakstan.
Dilfuza A. Kudaibergenova
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

open access: yesYankuang 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   +7 more
doaj   +1 more source

Characterization of Blue Tourmaline from Madagascar for Exploring Its Color Origin

open access: yesAdvances 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

Relationships among tissues, biofluids, and otolith selenium concentrations in wild female burbot (Lota lota)

open access: yesIntegrated Environmental Assessment and Management, EarlyView., 2023
Abstract In the Lake Koocanusa‐Kootenai River system (Montana, USA and British Columbia, Canada), selenium (Se) contamination has become an international concern and is suspected to contribute to the observed burbot (Lota lota) population collapse. Due to our limited ability to sample burbot in Lake Koocanusa for monitoring studies, we used a reference
Stephanie D. Graves   +6 more
wiley   +1 more source

Spectroscopic Characteristics and Color Origin of Red Tourmaline from Brazil

open access: yesJournal 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

Design considerations for racking metal products in electrochemical solutions

open access: yesJournal of Architecture, Art & Humanistic Science, 2021
Electrochemical treatment is one of the most important processes used in completing and finishing the surface of the product to improve the aesthetic and phenotypic properties of it. This process gives a distinct impression to the consumer because of its
Marwa Abd Elrahman Ahmed Abd Elrahman   +2 more
doaj   +1 more source

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

open access: yesJournal 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

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