Zobrazeno 1 - 10
of 183
pro vyhledávání: '"Keewook Yi"'
Autor:
Keewook Yi, Yuri Amelin
Publikováno v:
Journal of Analytical Science and Technology, Vol 15, Iss 1, Pp 1-12 (2024)
Abstract We report developing a procedure for measuring concentrations of U, Th and Pb (including all natural Pb isotopes) to establish the distribution of these elements in meteorite minerals and correctly interpret Pb-isotopic ages of meteorites. T
Externí odkaz:
https://doaj.org/article/2c82904718aa47288210c92549cd7e0a
Publikováno v:
Journal of Analytical Science and Technology, Vol 15, Iss 1, Pp 1-9 (2024)
Abstract Background The intricate textural patterns commonly observed in metamorphosed and recrystallized zircon (ZrSiO4) underscore the crucial necessity of understanding the underlying mechanisms governing their formation to ensure accurate interpr
Externí odkaz:
https://doaj.org/article/1be756744e644cc99e53415d7e343466
Autor:
Vinod O. Samuel, Sanghoon Kwon, Yirang Jang, Youngwoo Kil, M. Santosh, Chaewon Park, Keewook Yi
Publikováno v:
Communications Earth & Environment, Vol 4, Iss 1, Pp 1-12 (2023)
Abstract A major question in geodynamic evolution of the Earth is whether the continental keel evolved geochemically or were delaminated and replaced by a new mantle. Here we present direct evidence for the geochemical evolution of continental keel f
Externí odkaz:
https://doaj.org/article/bc2216442921454a82f9d71b7f7626da
Autor:
Jeongmin Kim, Changkun Park, Keewook Yi, Shinae Lee, Sook Ju Kim, Min-Ji Jung, Albert Chang-sik Cheong
Publikováno v:
Journal of Analytical Science and Technology, Vol 13, Iss 1, Pp 1-8 (2022)
Abstract Background Monazite, a moderately common light rare earth element (LREE) and thorium phosphate mineral, has chemical, age, and isotopic characteristics that are useful in the investigation of the origin and evolution of crustal melts and flu
Externí odkaz:
https://doaj.org/article/6e9ef97b9d464931bfe89724f0c25cda
Autor:
Anuj K. Shrivastava, Mohammad B. Raza, Lopamudra Saha, Keewook Yi, Pritam Nasipuri, Jayanta K. Pati
Publikováno v:
Lithosphere, Vol 2022, Iss Special 8 (2023)
In this article, novel geochronological (U–Pb SHRIMP) and geochemical data are presented from the lowermost sandstone unit (Par formation), basement granites of Gwalior Basin and sandstones from the Bhopal Basin, located along margins of the Archae
Externí odkaz:
https://doaj.org/article/53c372eeeb1c4dc4b589e966eeae7e03
Autor:
Je-Woo Hong, Jinkyu Hong, Junghwa Chun, Yong Hee Lee, Lim-Seok Chang, Jae-Bum Lee, Keewook Yi, Young-San Park, Young-Hwa Byun, Sangwon Joo
Publikováno v:
Carbon Balance and Management, Vol 14, Iss 1, Pp 1-18 (2019)
Abstract Background It is important to quantify changes in CO2 sources and sinks with land use and land cover change. In the last several decades, carbon sources and sinks in East Asia have been altered by intensive land cover changes due to rapid ec
Externí odkaz:
https://doaj.org/article/caf5d6c7bad74a2ba7bd08fa97552b4c
Publikováno v:
Journal of Analytical Science and Technology, Vol 9, Iss 1, Pp 1-8 (2018)
Abstract Background The 238U–230Th disequilibrium dating of the mineral zircon (ZrSiO4) provides an efficient tool for investigating the time scales of Quaternary magmatic processes. In situ mass spectrometric U–Th microanalysis of zircon require
Externí odkaz:
https://doaj.org/article/bff88e4b79dd426da323f1c050da826e
Publikováno v:
Restorative Dentistry & Endodontics, Vol 41, Iss 4, Pp 255-261 (2016)
Objectives This study aimed to analyze the mineral composition of naturally- and artificially-produced caries-affected root dentin and to determine the elemental incorporation of resin-modified glass ionomer (RMGI) into the demineralized dentin.
Externí odkaz:
https://doaj.org/article/e154de346c624e48a592e870ab3ae8ba
Publikováno v:
Journal of the Geological Society of Korea. 58:303-317
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2e586347b3b4a1075c532afe26e1d88
https://doi.org/10.14770/jgsk.2022.58.3.303
https://doi.org/10.14770/jgsk.2022.58.3.303
Autor:
Marcin J. Mieszczak, Monika A. Kusiak, Daniel J. Dunkley, Simon A. Wilde, Martin J. Whitehouse, Keewook Yi, Shinae Lee
Our understanding of the geological history of early Archean crust is limited by poor preservation of igneous features in rocks that have experienced multiple metamorphic and deformation events. Thus, regions with the best preserved Eoarchean rocks,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c28e0953f8f28d62fe0f7c71564b1b09
https://doi.org/10.5194/egusphere-egu23-13831
https://doi.org/10.5194/egusphere-egu23-13831
