Zobrazeno 1 - 10
of 65
pro vyhledávání: '"W. Wongkokua"'
Publikováno v:
Journal of Physics Communications, Vol 7, Iss 12, p 125003 (2024)
The blue color of sapphire is commonly related to the amount of Fe and Ti impurities replacing Al ^3+ in the Al _2 O _3 structure. Generally, the color intensity on sapphires is related to the gem deposits including the basaltic-related and metamorph
Externí odkaz:
https://doaj.org/article/d3e552a8662945cea06896507f168836
Autor:
C Kerdkaew, S Kaewpho, A Srisakorn, S Chomkokard, T Yaemglin, I Cheowanish, N Jinuntuya, W Wongkokua
Publikováno v:
Journal of Physics: Conference Series. 2431:012023
Conventional laser triangulations are designed to measure the depth or height on a dull or rough surface. This can be done by projecting a light perpendicularly to the surface and capturing the spot of the diffuse reflection which is scattered from t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd97468db4af02f126c88092ef33e178
https://doi.org/10.1088/1742-6596/2431/1/012023
https://doi.org/10.1088/1742-6596/2431/1/012023
Publikováno v:
Journal of Physics: Conference Series. 2431:012036
We perform a Monte Carlo simulation to study the propagation of uncertainty in Euler rotational kinematic equation. The rate gyro data from an IMU sensor are inserted into the Euler rotational kinematic differential equation to calculate the sensor o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::765435e83703e029a0f90f85f3103d27
https://doi.org/10.1088/1742-6596/2431/1/012036
https://doi.org/10.1088/1742-6596/2431/1/012036
Autor:
S Kaewpho, C Kerdkaew, K Samnasen, S Chomkokard, T Yaemglin, I Cheowanish, W Wongkokua, N Jinuntuya
Publikováno v:
Journal of Physics: Conference Series. 2431:012022
The autocollimator is a non-contact angle measuring instrument using the geometric light reflection principle. The instrument can be used in scientific research and industrial applications with high resolution. In this work, we propose an application
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e92d325b901a6939eaf682187afa215b
https://doi.org/10.1088/1742-6596/2431/1/012022
https://doi.org/10.1088/1742-6596/2431/1/012022
Publikováno v:
Journal of Applied Spectroscopy. 86:486-492
We study the effect of Be atoms in the corundum structure by using UV-Vis–NIR spectroscopy as well as X-ray absorption spectroscopy on synthetic ruby samples obtained by the Verneuil process. From the X-ray absorption near edge structure (XANES) sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c764cb46fd0f550709db0a191e61e05f
https://doi.org/10.1007/s10812-019-00845-x
https://doi.org/10.1007/s10812-019-00845-x
Publikováno v:
Journal of Physics: Conference Series. 2145:012062
Yellow sapphire is a gemstone variety of corundum (Al2O3). The yellow color is commonly caused by Fe3+ impurity substituting for Al3+ in the Al2O3 structure. The depth of yellow color is linked to Fe3+ concentration. The higher content of Fe3+ produc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52ac702017ca0ba8426c970686b9a3e4
https://doi.org/10.1088/1742-6596/2145/1/012062
https://doi.org/10.1088/1742-6596/2145/1/012062
Publikováno v:
Journal of Physics: Conference Series. 2145:012063
Pearl is an organic gem with its unique color and luster. One of the factors determining the quality and price of pearl is the luster. The different luster of pearls could be related to the different phase structures such as aragonite, calcite and va
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1dcbd40b9661ef8029b74545da0345f8
https://doi.org/10.1088/1742-6596/2145/1/012063
https://doi.org/10.1088/1742-6596/2145/1/012063
Autor:
K Ketthong, S Pulpirom, L Rianthakool, K Prasanai, C Na Takuathung, S Chomkokard, N Jinuntuya, W Wongkokua
Publikováno v:
Journal of Physics: Conference Series. 2145:012065
We simulate the wave propagation through various mediums using a graph-theoretical path-finding algorithm. The mediums are discretized to the square lattices, where each node is connected up to its 4th nearest neighbours. The edge connecting any 2 no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fabab00ad9cf8360ebb28b993b0dea86
https://doi.org/10.1088/1742-6596/2145/1/012065
https://doi.org/10.1088/1742-6596/2145/1/012065
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Publikováno v:
Applied Mechanics and Materials. 865:15-19
The red color of ruby is caused by Cr3+ impurities substituting Al3+ in Al2O3 structure. The complete substitution of Al3+ by Cr3+ produces Cr2O3 that has the green color. In this study, we focused on the phase transition of solid solution between co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::771f45dd2df4e7f9b77469756ecedd51
https://doi.org/10.4028/www.scientific.net/amm.865.15
https://doi.org/10.4028/www.scientific.net/amm.865.15