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        Hwarangs and Yueguang Tongzi: A New Analysis of the Relationship, With the Help of Textual Philology

        Marco Campa 한국학중앙연구원 한국학중앙연구원 2023 THE REVIEW OF KOREAN STUDIES Vol.26 No.1

        In this article I will address the question of religion the hwarang group professed and its relationship with Chinese heterodox sects. Particularly, those sects were built around the cult of Candraprabhākumāra, a minor character becoming the center of devotion not unlike that of Maitreya during the post-Han era, specifically during Sui-Tang dynasties. The major concerns of this paper are if Silla and hwarangs may have known about this heterodox figure, and if so, how and when. There will be a tentative of verification of Prof. Pankaj Mohan’s thesis in the light of other scholars, in particular Hubert Michael Seiwert, and most importantly Erich Zürcher, who tried first to study the Candraprabhākumāra’s cults. There will be an assessment of what we know about the hwarangs and what we know about Candraprabhākumāra that could be more related to them. More specifically, the Shouluo biqiu jing, a text examined by all there three scholars, will be analyzed in philological terms. On this basis and on the historical accounts known to us, new hypotheses will be formulated. The conclusions are that the Shouluo jing and the Candraprabhākumāra’s cults were known in Silla though the text was likely written in China as opposed to Pankaj Mohan’s hypothesis of its origin in the southern Korean kingdom. The hwarangs likely also knew that, by mediation of Baekje: the neighbor kingdom likely acted as a mediator for this particular form of Maitreya’s cult.

      • Thermally rearranged polybenzoxazoles made from poly(<i>ortho</i>-hydroxyamide)s. Characterization and evaluation as gas separation membranes

        ,ez, Blanca,Cuadrado, Purificació,n,Marcos-Ferná,ndez, Á,ngel,de la Campa, José,G.,Tena, Alberto,Prá,danos, Pedro,Palacio, Laura,Lee, Young Moo,Alvarez, Cristina Elsevier 2018 Reactive & functional polymers Vol.127 No.-

        <P><B>Abstract</B></P> <P>Two series of aromatic poly(<I>ortho</I>-hydroxyamide)s (poly(<I>o</I>-hydroxyamide)s, HPAs) were prepared by reaction of two diamines, 2,2-bis(3-amino-4-hydroxyphenyl) propane (APA) and 2,2-bis(3-amino-4-hydroxyphenyl) hexafluoropropane (APAF), with four aromatic diacid chlorides; terephthaloyl dichloride (TPC), isophthaloyl dichloride (IPC), 2,2-bis[4-chlorocarbonylphenyl)hexafluoropropane (6FC) and 4,4′-sulfonyldibenzoyl dichloride (DBSC). Amorphous HPAs with high molecular weights (inherent viscosities higher than 0.5 dL/g) and relatively high glass transition temperatures (220–280 °C) were obtained. Dense membranes of HPAs were able to undergo a thermal rearrangement (TR) process to polybenzoxazoles (β-TR-PBOs) heating at moderate temperatures (between 250 and 375 °C), and their complete conversion was reached at a temperature below 375 °C, depending on the <I>o</I>-hydroxy diamine moiety, APA and APAF. The β-TR-PBOs films derived from APAF showed a higher thermal stability and higher Tg than those from APA. Gas separation properties of TR-PBOs membranes were superior to those of their poly(<I>o</I>-hydroxyamide) precursors, particularly for the following gas pairs: O<SUB>2</SUB>/N<SUB>2</SUB>, CO<SUB>2</SUB>/CH<SUB>4</SUB>, He/CH<SUB>4</SUB> and He/CO<SUB>2</SUB>.</P>

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