Zobrazeno 1 - 10
of 113
pro vyhledávání: '"Seung Kyun, Lee"'
Autor:
Soonho Kim, Rongzhen Piao, Seung Kyun Lee, Taekgeun Oh, Booki Chun, Jae-Weon Jeong, Ha-Jin Lee, Doo-Yeol Yoo
Publikováno v:
Case Studies in Construction Materials, Vol 21, Iss , Pp e03861- (2024)
This study investigates the effects of the water-to-cement (w/c) ratio and carbon nanotube (CNT) dosage on the thermoelectric and mechanical properties of cement-based composites. Four different types of w/c ratio including 0.2, 0.3, 0.4, and 0.5 wer
Externí odkaz:
https://doaj.org/article/f70aa1dbd4b940f69f30c5d2b9de104e
Publikováno v:
Journal of Materials Research and Technology, Vol 20, Iss , Pp 359-372 (2022)
In this study, the effects of carbon fibers and crack widths on the electromagnetic interference (EMI) shielding effectiveness of high-performance fiber-reinforced cementitious composites (HPFRCCs) with 2 vol.% straight steel fibers were evaluated. T
Externí odkaz:
https://doaj.org/article/d7e6290a08cd4cf981884ad70a40a99a
Publikováno v:
Journal of Materials Research and Technology, Vol 20, Iss , Pp 1993-2007 (2022)
This study investigated the effect of substituting nano-SiO2 for silica fume on the fiber-matrix interfacial bond performance of ultra-high-performance concrete (UHPC). In this study, silica fume was substituted by nano-SiO2 in the weight range of 0
Externí odkaz:
https://doaj.org/article/8c9a5f88c2fd4ab1bd5424005eb5f7ae
Autor:
Byung-Pan Song, Hyeong-Seop Kim, Sung-Jun Yoon, Daniel Hernandez, Kyoung-Nam Kim, Seung-Kyun Lee
Publikováno v:
IEEE Access, Vol 10, Pp 78643-78649 (2022)
In this study, we propose a novel, multiturn histology coil for microscopic magnetic resonance (MR) imaging of histological tissue slices with substantially higher signal-to-noise-ratio (SNR) outcomes compared with previously developed coils. We perf
Externí odkaz:
https://doaj.org/article/6efc60eb583f4fc09f61ac0b6d3ce0ce
Autor:
Hyeong-Seop Kim, Byung-Pan Song, Royoung Kim, Woo-Chul Choi, Donghyuk Kim, Won Mok Shim, Kyoung-Nam Kim, Seung-Kyun Lee
Publikováno v:
IEEE Access, Vol 10, Pp 42097-42107 (2022)
Magnetic resonance imaging (MRI) using an ultra-high magnetic field (7 Tesla) enables detailed and non-invasive studies of the function and anatomy of the human visual cortex, which is the brain region responsible for visual signal processing. Howeve
Externí odkaz:
https://doaj.org/article/6ae87fdc33b44036bb0eeafddf4b87db
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
Abstract Two-dimensional (2D) line scan-based dynamic magnetic resonance imaging (MRI) is examined as a means to capture the interior of objects under repetitive motion with high spatiotemporal resolutions. The method was demonstrated in a 9.4-T anim
Externí odkaz:
https://doaj.org/article/70267dc8374d4d5b9b8fec787305324b
Publikováno v:
NeuroImage, Vol 223, Iss , Pp 117265- (2020)
Susceptibility-induced static field (B0) inhomogeneity near the nasal cavity degrades high-field MRI image quality. Many studies have addressed this problem by hardware- or sequence-based methods to improve local B0 shimming or minimize the impact of
Externí odkaz:
https://doaj.org/article/d6eb872a49cf4cf4bede3960170ec6dc
Autor:
Phan Tan Toi, Hyun Jae Jang, Kyeongseon Min, Sung-Phil Kim, Seung-Kyun Lee, Jongho Lee, Jeehyun Kwag, Jang-Yeon Park
Publikováno v:
Science. 378:160-168
There has been a long-standing demand for noninvasive neuroimaging methods that can detect neuronal activity at both high temporal and high spatial resolution. We present a two-dimensional fast line-scan approach that enables direct imaging of neuron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61dfc68ce6b68f7bbfd3f8606275307f
https://doi.org/10.1126/science.abh4340
https://doi.org/10.1126/science.abh4340
Autor:
Nastaren Abad, Seung‐Kyun Lee, Afis Ajala, Myung‐Ho In, Louis M. Frigo, Chitresh Bhushan, H. Douglas Morris, Yihe Hua, Vincent B. Ho, Matt A. Bernstein, Thomas K. F. Foo
Publikováno v:
Magnetic Resonance in Medicine. 89:262-275
Asymmetric gradient coils introduce zeroth- and first-order concomitant field terms, in addition to higher-order terms common to both asymmetric and symmetric gradients. Salient to compensation strategies is the accurate calibration of the concomitan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd0998b1b90840104998bb4357ae28d5
https://doi.org/10.1002/mrm.29452
https://doi.org/10.1002/mrm.29452
Autor:
Seung-Kyun Lee, John Schenck
Publikováno v:
Journal of Applied Physics. 133
A theoretical method is described to analytically calculate a pair of surface current densities, which produce a desired static magnetic field in one region of the space and zero magnetic field in another. The analysis is based on the known relations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74efb872319d232ab3ba6a9bbcf6d4a7
https://doi.org/10.1063/5.0151057
https://doi.org/10.1063/5.0151057