Zobrazeno 1 - 10
of 218
pro vyhledávání: '"Hyun‐Joo Choi"'
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 68, Iss No 1, Pp 43-46 (2023)
Directed energy deposition (DED) is an additive manufacturing process wherein an energy source is focused on a substrate on which a feedstock material is simultaneously delivered, thereby forming a small melt pool. Melting, solidification, and subseq
Externí odkaz:
https://doaj.org/article/5f9c532f086f44c6ab51d83edbfdbfc3
Autor:
Kon-Bae Lee, Kanhu C. Nayak, Cheol-Hwee Shim, Hye-In Lee, Se-Hoon Kim, Hyun-Joo Choi, Jae-Pyoung Ahn
Publikováno v:
Journal of Composites Science, Vol 7, Iss 11, p 457 (2023)
This study compares the tensile properties of commercial aluminum matrix composites (AMCs) with those of AMCs produced via a nitrogen-induced self-forming process. This process is a newly developed AMCs manufacturing process that takes advantage of t
Externí odkaz:
https://doaj.org/article/9ce7d762b1c148a0bb24e0edd9ec09cf
Publikováno v:
대한영상의학회지, Vol 82, Iss 3, Pp 654-669 (2021)
Purpose To evaluate the accuracy of MRI in predicting the pathological complete response (pCR) and the residual tumor size of breast cancer after neoadjucant chemotherapy (NAC), and to determine the factors affecting the accuarcy. Materials and Me
Externí odkaz:
https://doaj.org/article/41bdaca499fd40519218db43d8c2bff2
Autor:
Annelize vanNiekerk, Irina Sandu, Ayrton Zadra, Eric Bazile, Takafumi Kanehama, Martin Köhler, Myung‐Seo Koo, Hyun‐Joo Choi, Yukihiro Kuroki, Michael D. Toy, Simon B. Vosper, Valery Yudin
Publikováno v:
Journal of Advances in Modeling Earth Systems, Vol 12, Iss 11, Pp n/a-n/a (2020)
Abstract The parametrization of orographic drag processes is a major source of circulation uncertainty in models. The COnstraining ORographic Drag Effects (COORDE) project makes a coordinated effort to narrow this uncertainty by bringing together the
Externí odkaz:
https://doaj.org/article/2de6b0dc940f46a38616a8ea5eda2718
Publikováno v:
Sensors, Vol 21, Iss 20, p 6813 (2021)
In this study, 3D-printable flexible piezoresistive composites containing various amounts of cilia-like hybrid fillers were developed. In the hybrid fillers, micro-scale Cu particles with a 0D structure may allow them to easily disperse into the flex
Externí odkaz:
https://doaj.org/article/a738816616d84bce859eced6abe43759
Publikováno v:
Catalysts, Vol 11, Iss 8, p 987 (2021)
This study synthesized refractory metal-oxide-doped titanate nanotubes (TNTs) using a hydrothermal process and investigated their photocatalytic activity under ultraviolet and visible light irradiation. Refractory metal doping ions such as Mo6+ and W
Externí odkaz:
https://doaj.org/article/8b1b2ac9d8e747f1bbbb4e09b728b62a
Autor:
Sanghee Jun, Jeong-Hyun Park, Hyun-Joo Choi, Yong-Hee Lee, Yoon-Jin Lim, Kyung-On Boo, Hyun-Suk Kang
Publikováno v:
Atmosphere, Vol 12, Iss 9, p 1089 (2021)
Accurate initial soil moisture conditions are essential for numerical weather prediction models, because they play a major role in land–atmosphere interactions. This study constructed a soil moisture data assimilation system and evaluated its impac
Externí odkaz:
https://doaj.org/article/ee06dd825caa4e3784941f3054438cbb
Autor:
Dae-Young Kim, Hyun-Joo Choi
Publikováno v:
Materials, Vol 13, Iss 12, p 2828 (2020)
Metal matrix composites (MMCs) are promising alternatives to metallic alloys. Their high strength-to-weight ratios; high temperature stabilities; and unique thermal, electrical, and chemical properties make them suitable for automotive, aerospace, de
Externí odkaz:
https://doaj.org/article/1087aa218b6c4ca7a1b71a962b181966
Publikováno v:
Materials, Vol 13, Iss 5, p 1213 (2020)
The nitridation-induced self-formed aluminum matrix composite (NISFAC) process is based on the nitridation reaction, which can be significantly influenced by the characteristics of the starting materials (e.g., the chemical composition of the aluminu
Externí odkaz:
https://doaj.org/article/0542c87b2d7846d7a32e42f008c7da8c
Publikováno v:
Materials, Vol 13, Iss 6, p 1309 (2020)
This paper investigates the effect of the size and volume fraction of SiC, along with that of the processing temperature, upon the nitridation behavior of aluminum powder during the nitridation-induced self-formed aluminum composite (NISFAC) process.
Externí odkaz:
https://doaj.org/article/98af0bae725a4195a016882e4fa12ff9