Výsledky vyhledávání - "Han-Woo Choi"

Akademický článek

Space Radiation Effect on Si Solar Cells

Autor: Jae-Jin Lee, Young-Sil Kwak, Junga Hwang, Su-Chan Bong, Kyung-Seok Cho, Seongin Jeong, Kyunghee Kim, Han-Woo Choi, Young-Hwan Han, Yongwoon Choi, Baek-Il Seong

Publikováno v: Journal of Astronomy and Space Sciences, Vol 25, Iss 4, Pp 435-444 (2008)

High energy charged particles are trapped by geomagnetic field in the region named Van Allen Belt. These particles can move to low altitude along magnetic field and threaten even low altitude spacecraft. Space Radiation can cause equipment failures a

Externí odkaz: https://doaj.org/article/79683896cb6e47119c9340fbc445f4ae

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Chronological implications of changes in the accumulation rate of long marine cores from the continental shelf, southeastern Korea

Autor: Hyun Ho Yoon, Jin Cheul Kim, Dong-Geun Yoo, Chang-Pyo Jun, Gwang-Soo Lee, Seok-Hwi Hong, Han-Woo Choi

Publikováno v: Marine Geophysical Research. 44

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::57c333c79f8fe14191b5738cdf18a84f
https://doi.org/10.1007/s11001-022-09509-6

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An introduction of modern pollen analogue methods for reconstruction of paleovegetation and pollen-based quantitative paleotemperature

Autor: Min Han, Chang-Pyo Jun, Dong-Wook Kim, Yongmi Kim, Han Woo Choi, Sangheon Yi, Jin Cheul Kim, Eun Mi Lee, Hyounsoo Lim

Publikováno v: Journal of the Geological Society of Korea. 56:85-99

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1b358cd6cd5503f16c3b83ac1f80e49b
https://doi.org/10.14770/jgsk.2020.56.1.85

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Chronostratigraphic and palaeogeographic interpretation of Nakdong deltaic sequences in the south-eastern Korean Peninsula

Autor: Seok-Hwi Hong, Jooah Choi, Jin-Young Lee, Min Han, Jin Cheul Kim, Dong-Geun Yoo, Daekyo Cheong, Seungwon Shin, Hyun Ho Yoon, Han-Woo Choi

Publikováno v: Palaeogeography, Palaeoclimatology, Palaeoecology. 584:110654

We investigated the chronostratigraphy of six boreholes in the Nakdong River delta area in South Korea based on optically stimulated luminescence (OSL) and 14C dating. The standardised growth curves (SGCs) produced from single and multiple boreholes

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5d3efde8083ca8271bde07ff7b3d482a
https://doi.org/10.1016/j.palaeo.2021.110654

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Effect of FeS on mercury behavior in mercury-contaminated stream sediment: A case study of Pohang Gumu Creek in South Korea

Autor: Chul-Min Chon, Han Woo Choi, Joo Sung Ahn, Soyeon Kwon, Young-Soo Han, Seol-Hee Kim, Jae-Gon Kim

Publikováno v: Journal of hazardous materials. 393

This study investigated mercury contamination with respect to the sediment characteristics in Gumu Creek near the Pohang Industrial Complex, South Korea. The contaminated sediment had high levels of Hg, exceeding 250 mg Hg/kg sediment at the sampling

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82cae099b50446a4cd0cf03892a9b678
https://pubmed.ncbi.nlm.nih.gov/32126425

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Saharan green corridors and Middle Pleistocene hominin dispersals across the Eastern Desert, Sudan

Autor: Jin Cheul Kim, Ahmed Nassr, Ju Yong Kim, Marcin Szmit, Han Woo Choi, Axel Timmermann, Małgorzata Wieczorek, Joanna Krupa-Kurzynowska, Young Kwan Sohn, Mirosław Masojć, Ji Sung Kim

Publikováno v: Journal of human evolution. 130

The Sahara Desert episodically became a space available for hominins in the Pleistocene. Mostly, desert conditions prevailed during the interpluvial periods, which were only periodically interrupted by enhanced precipitation during pluvial or intergl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::663332304f5334f566259a92cf38223a
https://pubmed.ncbi.nlm.nih.gov/31010540

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Thickness analysis of LiF thin films by using 7Li(p,n) and 19F(p,αγ) nuclear reactions

Autor: Han-Woo Choi, Gi-Dong Kim, Hyung-Joo Woo, Jung-Heun Park

Publikováno v: Journal of the Korean Physical Society. 62:413-418

A neutron time of flight (n-TOF) technique is applied for analyzing the thickness of a LiF thin film used as a neutron target. Measuring the flight time of the neutron generated from the neutron target gives information on the proton attenuation ener

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::75766323b3de4ded94a38b7ab27b7851
https://doi.org/10.3938/jkps.62.413

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Control of the chemical state change of sulfur in solid compound targets during high-resolution PIXE measurements

Autor: Hyung-Joo Woo, Han-Woo Choi, Joonkon Kim, Gi-Dong Kim

Publikováno v: Journal of the Korean Physical Society. 61:243-247

A high-energy-resolution wavelength-dispersive (WD) X-ray spectrometer in the Johansson geometry, which allowed energy resolution below the natural linewidth of the Kα lines was employed in measurements of the proton-induced Kα X-ray emission spect

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6539be3b99547ec62b4186d81f164d62
https://doi.org/10.3938/jkps.61.243

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Structural and optical characterization of GaN nanostructures formed by using N+ implantation into GaAs at various temperature

Autor: Gi-Dong Kim, Hyung-Joo Woo, Joonkon Kim, Han-Woo Choi

Publikováno v: Journal of the Korean Physical Society. 60:383-387

We have investigated the evolution of GaN phase nanocrystallite formation in a GaAs matrix by using nitrogen-ion implantation and subsequent rapid thermal annealing. A semi-insulating GaAs (100) wafer was implanted with 50-keV nitrogen ions at fluenc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f4797986823886487483b039c39da228
https://doi.org/10.3938/jkps.60.383

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