0 9 r e v i s i o n : 1 9 9 3 0 8 2 9 m o d i f i e d : 1 9 9 3 0 8 2 9 Non-existence of Universal Orders in Many Cardinals Menachem Kojman and Saharon Shelah† Department of Mathematics, Hebrew University 91904 Jerusalem, Israel ABSTRACT Our theme is that not every interesting question in set theory is independent of ZFC. We give an example of a first order theory T with countable D(T ) which c...

EPPO BulletinVolume 51, Issue 3 p. 616-621 STANDARD - NATIONAL REGULATORY CONTROL SYSTEMSFree Access PM 9/31 (1) Ambrosia trifida First published: 25 November 2021 https://doi.org/10.1111/epp.12783AboutSectionsPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text full-text accessPlease review our Terms and Conditions of Use check box belo...

EPPO BulletinVolume 51, Issue 3 p. 610-615 STANDARD - NATIONAL REGULATORY CONTROL SYSTEMSFree Access PM 9/8 (2) Pontederia crassipes First published: 25 November 2021 https://doi.org/10.1111/epp.12784AboutSectionsPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text full-text accessPlease review our Terms and Conditions of Use check box b...

A facile synthesis was employed to make a 56π-electron methano-PC(61)BM with a very small 1,2-dihydromethano (CH(2)) group. This new fullerene derivative possesses high electron mobility (0.014 cm(2) V(-1) s(-1)) and higher LUMO energy level (0.15 eV) than PC(61)BM. Bulk hetero-junction devices based on using poly(3-hexylthiophene) and methano-PC(61)BM as active layer exhibited better performan...