Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Kee Ho Choi"'
Autor:
Sang Hoon Bae (배상훈), Kee Ho Choi (최기호)
Publikováno v:
ECNU Review of Education, Vol 7 (2024)
Purpose In Korea, private tutoring is considered a social evil that damages the capacity of public schooling and undermines social justice. Although the government has implemented various policies to reduce private tutoring, ranging from improving th
Externí odkaz:
https://doaj.org/article/2f475629df1f402ab0ca84ee37a5ddd2
Autor:
Bo Geun Song, Yonggyu Han, Seung Woong Yoon, Min Hyung Lee, Youngkyu Do, Youngjo Kim, Kee Ho Choi
Publikováno v:
Macromolecular Rapid Communications. 22:573-578
A new type of half-metallocene catalyst for the polymerization of ethylene and styrene Cp * M((O) 3 O 9 Si 7 (c-C 5 H 9 ) 7 ) (M= Ti (1), Zr (2)) is prepared by the reaction of (HO) 3 O 9 Si 7 (c-C 5 H 9 ) 7 with Cp * MCl 3 in the presence of triethy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d962c32b539540e17997ce882cb850bf
https://doi.org/10.1002/1521-3927(20010501)22:8<573::aid-marc573>3.0.co
https://doi.org/10.1002/1521-3927(20010501)22:8<573::aid-marc573>3.0.co
Publikováno v:
Korean Journal of Chemical Engineering. 17:205-209
Two types of inorganic supports, MgCl2 and SiO2, for the impregnation of catalysts were prepared by the recrystallization and sol-gel methods, respectively. The Ziegler-Natta/Metallocene hybrid catalysts were prepared in order to control the molecula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7d2b2a6bcb24f909c62a5aa04dc6005
https://doi.org/10.1007/bf02707144
https://doi.org/10.1007/bf02707144
Bisupport for the olefin polymerization was prepared by the gelation of the colloidal phase of SiCO2 using MgCl2 solution as an initiator. The prepared Ziegler-Natta/Metallocene hybrid catalysts on the bisupport exhibited the characteristics of both
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f96e1add058898512821d4b686521d24
https://doi.org/10.1016/s0167-2991(99)80124-4
https://doi.org/10.1016/s0167-2991(99)80124-4
Autor:
Bae, Sang Hoon, Choi, Kee Ho
Publikováno v:
ECNU Review of Education; Feb2024, Vol. 7 Issue 1, p12-41, 30p
Autor:
Igor de Rachewiltz
Volume Three of Igor de Rachewiltz's annotated translation of the Secret History of the Mongols (Brill 2004, 2006), now regarded as the standard English version of this epic biography of Činggis Qan, is both a complement and a supplement to the firs
Autor:
Kenneth C. Gray, Edwin L. Herr
Help teens in the academic middle succeed by creating and valuing other ways to win! Research suggests that more than half of high school graduates are not academically prepared for college, yet they do not have significant learning disabilities prev